US20170107179A1 - Polycyclic Tetracycline Compounds - Google Patents
Polycyclic Tetracycline Compounds Download PDFInfo
- Publication number
- US20170107179A1 US20170107179A1 US15/164,183 US201615164183A US2017107179A1 US 20170107179 A1 US20170107179 A1 US 20170107179A1 US 201615164183 A US201615164183 A US 201615164183A US 2017107179 A1 US2017107179 A1 US 2017107179A1
- Authority
- US
- United States
- Prior art keywords
- alkyl
- heterocyclyl
- alkylene
- ring
- carbocyclyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
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- DMWCPXZWKZLSCJ-ODDIQZTASA-N [H][C@@]12C[C@]3([H])CC4=C(C(=O)C3=C(O)[C@]1(O[Si](C)(C)C(C)(C)C)C(=O)C1=C(ON=C1OCC1=CC=CC=C1)[C@H]2N(C)C)C(OCC1=CC=CC=C1)=C1CN(CC=C)CC1=C4F Chemical compound [H][C@@]12C[C@]3([H])CC4=C(C(=O)C3=C(O)[C@]1(O[Si](C)(C)C(C)(C)C)C(=O)C1=C(ON=C1OCC1=CC=CC=C1)[C@H]2N(C)C)C(OCC1=CC=CC=C1)=C1CN(CC=C)CC1=C4F DMWCPXZWKZLSCJ-ODDIQZTASA-N 0.000 description 1
- DVPBULZCEQQQCU-SDYVDVKUSA-N [H][C@@]12C[C@]3([H])CC4=C(C(=O)C3=C(O)[C@]1(O[Si](C)(C)C(C)(C)C)C(=O)C1=C(ON=C1OCC1=CC=CC=C1)[C@H]2N(C)C)C(OCC1=CC=CC=C1)=C1CNCC1=C4F Chemical compound [H][C@@]12C[C@]3([H])CC4=C(C(=O)C3=C(O)[C@]1(O[Si](C)(C)C(C)(C)C)C(=O)C1=C(ON=C1OCC1=CC=CC=C1)[C@H]2N(C)C)C(OCC1=CC=CC=C1)=C1CNCC1=C4F DVPBULZCEQQQCU-SDYVDVKUSA-N 0.000 description 1
- ZPLICUVEWRPTGI-HQUKPEPPSA-N [H][C@@]12C[C@]3([H])CC4=C(OC)C5=C(CN(C(C)(C)C)C5)C(O)=C4C(=O)C3=C(O)[C@]1(O)C(=O)C(C(N)=O)=C(O)[C@H]2N(C)C Chemical compound [H][C@@]12C[C@]3([H])CC4=C(OC)C5=C(CN(C(C)(C)C)C5)C(O)=C4C(=O)C3=C(O)[C@]1(O)C(=O)C(C(N)=O)=C(O)[C@H]2N(C)C ZPLICUVEWRPTGI-HQUKPEPPSA-N 0.000 description 1
- WLMCRBVOVYRJIP-YXKYHGJGSA-N [H][C@@]12C[C@]3([H])CC4=C(OC)C5=C(CN(C(C)(C)CC)C5)C(O)=C4C(=O)C3=C(O)[C@]1(O)C(=O)C(C(N)=O)=C(O)[C@H]2N(C)C Chemical compound [H][C@@]12C[C@]3([H])CC4=C(OC)C5=C(CN(C(C)(C)CC)C5)C(O)=C4C(=O)C3=C(O)[C@]1(O)C(=O)C(C(N)=O)=C(O)[C@H]2N(C)C WLMCRBVOVYRJIP-YXKYHGJGSA-N 0.000 description 1
- BEZGFBCEBBYYAC-LCFDPTPOSA-N [H][C@@]12C[C@]3([H])CC4=C(OC)C5=C(CN(CCC)C5)C(O)=C4C(=O)C3=C(O)[C@]1(O)C(=O)C(C(N)=O)=C(O)[C@H]2N(C)C Chemical compound [H][C@@]12C[C@]3([H])CC4=C(OC)C5=C(CN(CCC)C5)C(O)=C4C(=O)C3=C(O)[C@]1(O)C(=O)C(C(N)=O)=C(O)[C@H]2N(C)C BEZGFBCEBBYYAC-LCFDPTPOSA-N 0.000 description 1
- WBSFDKFYWYROTP-BCCIOOSASA-N [H][C@@]12C[C@]3([H])CC4=C(OC)C5=C(CN([C@@H](C)CC)C5)C(O)=C4C(=O)C3=C(O)[C@]1(O)C(=O)C(C(N)=O)=C(O)[C@H]2N(C)C Chemical compound [H][C@@]12C[C@]3([H])CC4=C(OC)C5=C(CN([C@@H](C)CC)C5)C(O)=C4C(=O)C3=C(O)[C@]1(O)C(=O)C(C(N)=O)=C(O)[C@H]2N(C)C WBSFDKFYWYROTP-BCCIOOSASA-N 0.000 description 1
- WBSFDKFYWYROTP-HYXDVERHSA-N [H][C@@]12C[C@]3([H])CC4=C(OC)C5=C(CN([C@H](C)CC)C5)C(O)=C4C(=O)C3=C(O)[C@]1(O)C(=O)C(C(N)=O)=C(O)[C@H]2N(C)C Chemical compound [H][C@@]12C[C@]3([H])CC4=C(OC)C5=C(CN([C@H](C)CC)C5)C(O)=C4C(=O)C3=C(O)[C@]1(O)C(=O)C(C(N)=O)=C(O)[C@H]2N(C)C WBSFDKFYWYROTP-HYXDVERHSA-N 0.000 description 1
- KJNUVUAFXBNIMD-JOCHJYFZSA-N [H][C@]1(CN2CC3=C(C2)C(OCC2=CC=CC=C2)=C(C(=O)OC2=CC=CC=C2)C(C)=C3F)CCCO1 Chemical compound [H][C@]1(CN2CC3=C(C2)C(OCC2=CC=CC=C2)=C(C(=O)OC2=CC=CC=C2)C(C)=C3F)CCCO1 KJNUVUAFXBNIMD-JOCHJYFZSA-N 0.000 description 1
- BJSMCBWTVYVMBL-CYBMUJFWSA-N [H][C@]12CCCCN1CC(C(C)(C)C)=C(C(C)(C)C)NC2=O Chemical compound [H][C@]12CCCCN1CC(C(C)(C)C)=C(C(C)(C)C)NC2=O BJSMCBWTVYVMBL-CYBMUJFWSA-N 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/56—Ring systems containing three or more rings
- C07D209/58—[b]- or [c]-condensed
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D221/00—Heterocyclic compounds containing six-membered rings having one nitrogen atom as the only ring hetero atom, not provided for by groups C07D211/00 - C07D219/00
- C07D221/02—Heterocyclic compounds containing six-membered rings having one nitrogen atom as the only ring hetero atom, not provided for by groups C07D211/00 - C07D219/00 condensed with carbocyclic rings or ring systems
- C07D221/04—Ortho- or peri-condensed ring systems
- C07D221/18—Ring systems of four or more rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
- A61K31/403—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil condensed with carbocyclic rings, e.g. carbazole
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/55—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having seven-membered rings, e.g. azelastine, pentylenetetrazole
- A61K31/551—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having seven-membered rings, e.g. azelastine, pentylenetetrazole having two nitrogen atoms, e.g. dilazep
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P11/00—Drugs for disorders of the respiratory system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/10—Antimycotics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
- A61P31/14—Antivirals for RNA viruses
- A61P31/16—Antivirals for RNA viruses for influenza or rhinoviruses
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D243/00—Heterocyclic compounds containing seven-membered rings having two nitrogen atoms as the only ring hetero atoms
- C07D243/06—Heterocyclic compounds containing seven-membered rings having two nitrogen atoms as the only ring hetero atoms having the nitrogen atoms in positions 1 and 4
- C07D243/10—Heterocyclic compounds containing seven-membered rings having two nitrogen atoms as the only ring hetero atoms having the nitrogen atoms in positions 1 and 4 condensed with carbocyclic rings or ring systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
- C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
- C07D403/06—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/04—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/06—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D498/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
- C07D498/04—Ortho-condensed systems
Definitions
- the tetracyclines are broad spectrum anti-microbial agents that are widely used in human and veterinary medicine.
- the total production of tetracyclines by fermentation or semi-synthesis is measured in the thousands of metric tons per year.
- a first embodiment of the present invention is directed to a compound represented by Structural Formula (I):
- Another embodiment of the present invention is directed to a pharmaceutical composition
- a pharmaceutical composition comprising a pharmaceutically acceptable carrier or diluent and a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.
- the pharmaceutical composition is used in therapy, such as treating an infection (e.g., a bacterial infection) in a subject.
- Another embodiment of the present invention is a method of treating an infection (e.g., a bacterial infection) in a subject comprising administering to the subject an effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.
- an infection e.g., a bacterial infection
- Another embodiment of the present invention is a method of preventing an infection (e.g., a bacterial infection) in a subject comprising administering to the subject an effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.
- an infection e.g., a bacterial infection
- Another embodiment of the present invention is the use of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof for the manufacture of a medicament for treating an infection (e.g., a bacterial infection) in a subject.
- an infection e.g., a bacterial infection
- Another embodiment of the present invention is the use of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof for the manufacture of a medicament for preventing an infection (e.g., a bacterial infection) in a subject.
- an infection e.g., a bacterial infection
- Another embodiment of the present invention is the use of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof in therapy, such as treating or preventing an infection (e.g., a bacterial infection) in a subject.
- an infection e.g., a bacterial infection
- FIG. 1 is a bar graph that demonstrates the efficacy of Compounds 102, 143, 130, 126, and 135 at 10 mg/kg IV, BID and 30 mg/kg, BID orally in a S. pneumoniae SP160 lung model. Linezolid at 5 mg/kg IV, BID and 30 mg/kg, BID orally served as a control.
- FIG. 2 is a bar graph demonstrating the Compound 102 in the immunocompetent mouse lung infection model with S. pneumoniae SP514, oral dosing.
- FIG. 3 is a bar graph demonstrating efficacy of Compounds 102, 143, and 130 in the MRSA SA191 lung model.
- Compounds 102, 143, and 130 and linezolid were evaluated at 10 mg/kg IV, BID. All compounds were tested at 50 mg/kg, BID orally except linezolid. Linezolid was evaluated at 30 mg/kg, BID orally.
- FIG. 4 is a bar graph demonstrating the efficacy of Compound 102 in a Rat lung infection model with H. influenzae HI551.
- the present invention is directed to a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.
- Values and alternative values for the variables in Structural Formula I and for each of the embodiments described herein are provided in the following paragraphs. It is understood that the invention encompasses all combinations of the substituent variables (i.e., R 1 , R 2 , R 3 , etc.) defined herein.
- X is selected from halo, —R, —OR, —SR, —S(O) m R, —N(R) 2 , —N(R)C(O)R, —N(R)C(O)OR′, and —N(R)S(O) m R′, wherein each R is independently selected from H, (C 1 -C 6 )alkyl, carbocyclyl, or heterocyclyl; or two R groups taken together with the atom or atoms to which they are bound form a 4-7 membered non-aromatic heterocyclyl; and R′ is (C 1 -C 6 )alkyl, carbocyclyl, or heterocyclyl.
- X is selected from halo, —R′, —OR, —SR, —S(O) m R, —N(R) 2 , —N(R)C(O)R, —N(R)C(O)OR′, and —N(R)S(O) m R′, wherein each R is independently selected from H, (C 1 -C 6 )alkyl, carbocyclyl, or heterocyclyl, or two R groups taken together with the atom or atoms to which they are bound form a 4-7 membered non-aromatic heterocyclyl; and R′ is (C 1 -C 6 )alkyl, carbocyclyl, or heterocyclyl.
- X is selected from fluoro, chloro, hydrogen, methoxy, methyl, trifluoromethyl, trifluoromethoxy and dimethylamino.
- X is selected from fluoro, chloro, methoxy, methyl, trifluoromethyl, trifluoromethoxy and dimethylamino.
- X is selected from fluoro, chloro, methoxy, trifluoromethyl, and dimethylamino. Alternatively, X is methoxy or dimethylamino. Specifically, X is fluoro.
- Ring A is a 5-7 membered non-aromatic heterocyclic ring optionally containing 1-2 heteroatoms independently selected from N, S and O in addition to the indicated nitrogen atom.
- Ring A is selected from
- ring A is
- ring A is
- ring A is
- R 1 is selected from hydrogen, —(C 1 -C 8 )alkyl, —(C 0 -C 6 ) alkylene-carbocyclyl, —(C 0 -C 6 )alkylene-heterocyclyl, —(C 1 -C 6 )alkylene-O—(C 1 -C 6 )alkyl, —(C 2 -C 6 )alkylene-O-carbocyclyl, —(C 2 -C 6 )alkylene-O-heterocyclyl, —S(O) m —(C 1 -C 6 )alkyl, —S(O) m -carbocyclyl, —S(O) m -heterocyclyl, —(C 2 -C 4 )alkylene-S(O) m -carbocyclyl, —(C 2 -C 4 )alkylene-S(O) m
- R 1 is selected from hydrogen, —(C 1 -C 8 )alkyl, —(C 2 -C 4 )alkylene-O—(C 1 -C 4 )alkyl, —(C 0 -C 3 )alkylene-(saturated heterocycle), —(C 0 -C 3 )alkylene-(C 3 -C 7 )cycloalkyl, —C(O)—(C 1 -C 3 )alkylene-N(R 2 )(R 3 ), or R 1 taken together with a ring atom adjacent to the nitrogen atom to which R 1 is bound forms a saturated heterocyclic ring fused to ring A; wherein any alkyl or alkylene portion of R 1 or the saturated heterocyclic ring fused to ring A is optionally substituted with fluoro or hydroxy.
- R 1 is selected from hydrogen; (C 1 -C 3 )straight alkyl optionally substituted with one or more of: 1 to 5 methyl groups, a single hydroxy group, a single methoxy group, 1 to 3 fluoro groups, a single saturated heterocycle, and a single (C 3 -C 7 )cycloalkyl group; (C 3 -C 7 )cycloalkyl; tetrahydrofuranyl; and —C(O)—CH 2 —N(R 2 )(R 3 ); or R 1 taken together with a ring atom adjacent to the nitrogen atom to which R 1 is bound forms a pyrrolidinyl or piperidinyl ring fused to ring A, wherein the pyrrolidinyl or piperidinyl ring fused to ring A is optionally substituted with hydroxy or fluorine.
- R 1 is selected from ethyl, propyl, (C 3 -C 5 )branched alkyl, (C 3 -C 5 )cycloalkyl, (C 1 -C 3 )alkylene-cyclopropyl, —C(O)CH 2 NH-cyclopentyl, and —C(O)CH 2 -pyrrolidin-1-yl, wherein R 1 is optionally substituted with fluoro.
- R 1 is selected from 3-fluoroethyl, propyl, isopropyl, sec-butyl, tert-butyl, (C 3 -C 5 )cycloalkyl, —C(CH 3 ) 2 -cyclopropyl, —C(O)CH 2 NH-cyclopentyl, and —C(O)CH 2 -(3-fluoropyrrolidin-1-yl).
- R 1 is further selected from tert-pentyl.
- R 1 is selected from hydrogen and (C 1 -C 4 )alkyl.
- R 1 is selected from hydrogen, methyl, isobutyl, and tert-butyl.
- R 2 and R 3 is independently selected from hydrogen, (C 1 -C 8 )alkyl, —(C 0 -C 6 ) alkylene-carbocyclyl, —(C 0 -C 6 )alkylene-heterocyclyl, —(C 2 -C 6 )alkylene-O-carbocyclyl, —(C 2 -C 6 )alkylene-O-heterocyclyl, —S(O) m —(C 1 -C 6 )alkyl, —S(O) m -carbocyclyl, —S(O) m -heterocyclyl, —(C 2 -C 4 )alkylene-S(O) m -carbocyclyl, and —(C 2 -C 4 )alkylene-S(O) m -heterocyclyl; or
- R 2 and R 3 taken together with the nitrogen atom to which they are bound form a heterocyclyl, wherein the heterocyclyl optionally comprises 1 to 4 additional heteroatoms independently selected from N, S and O.
- R 2 is selected from hydrogen and (C 1 -C 3 )alkyl and R 3 is selected from (C 1 -C 3 )alkyl and (C 3 -C 7 )cycloalkyl, or R 2 and R 3 , taken together with the nitrogen atom to which they are bound form a 4-7 membered saturated heterocyclyl, wherein the heterocyclyl is optionally substituted with fluoro.
- R 2 and R 3 are simultaneously methyl; R 2 is hydrogen and R 3 is C 3 -C 7 cycloalkyl; or R 2 and R 3 , taken together with the nitrogen atom to which they are bound form a pyrrolidinyl ring optionally substituted with fluoro.
- Each R 4 is independently selected from hydrogen, (C 1 -C 6 )alkyl, carbocyclyl, heterocyclyl or a naturally occurring amino acid side chain moiety.
- two R 4 taken together with a common carbon atom to which they are bound form a 3-7 membered non-aromatic carbocyclyl or a 4-7 membered non-aromatic heterocyclyl, wherein the heterocyclyl formed by two R 4 comprises one to three heteroatoms independently selected from N, S and O.
- Any substitutable carbon atom on ring A is optionally:
- Any additional N heteroatom on ring A is substituted with hydrogen, (C 1 -C 6 )alkyl, carbocyclyl, or heterocyclyl.
- Each alkyl or alkylene in Structural Formula I is optionally and independently substituted with one or more substituents independently selected from halo, —OH, ⁇ O, —O—(C 1 -C 4 )alkyl, fluoro-substituted-(C 1 -C 4 )alkyl, —S(O) m —(C 1 -C 4 )alkyl and —N(R 5 )(R 5 ).
- Each carbocyclyl or heterocyclyl portion of a substituent of ring A or the saturated heterocyclic ring fused to ring A is optionally and independently substituted with one or more substituents independently selected from halo, —(C 1 -C 4 )alkyl, —OH, ⁇ O, —O—(C 1 -C 4 )alkyl, —(C 1 -C 4 )alkylene-O—(C 1 -C 4 )alkyl, halo-substituted-(C 1 -C 4 )alkyl, halo-substituted-O—(C 1 -C 4 )alkyl, —C(O)—(C 1 -C 4 )alkyl, —C(O)-(fluoro-substituted-(C 1 -C 4 )alkyl), —S(O) m —(C 1 -C 4 )alkyl, —N(R 5
- Each R 5 is independently selected from hydrogen and (C 1 -C 4 )alkyl, wherein each alkyl in the group represented by R 5 is optionally and independently substituted with one or more substituents independently selected from —(C 1 -C 4 )alkyl, (C 3 -C 6 )cycloalkyl, halo, —OH, —O—(C 1 -C 4 )alkyl, and —(C 1 -C 4 )alkylene-O—(C 1 -C 4 )alkyl.
- ring A is not an unsubstituted bivalent piperidine radical.
- Each m is independently 1 or 2.
- R 6a is selected from hydrogen and methyl.
- R 6 is selected from hydrogen, (C 1 -C 4 )alkyl optionally substituted with hydroxy or phenyl; or R 6 taken together with R 1 and the nitrogen atom and the carbon atom to which they are respectively bound form a pyrrolidinyl or piperidinyl ring fused to ring A, wherein the pyrrolidinyl or piperidinyl ring is optionally substituted with —OH or —F; or R 6 and R 6a are taken together with the carbon atom to which they are both bound to form a cyclopropyl ring.
- R 6 is selected from hydrogen, (R)-(C 1 -C 4 )alkyl, or —CH 2 -phenyl, or R 1 and R 6 taken together with the nitrogen atom and the carbon atom to which they are respectively bound form a pyrrolidinyl ring fused to ring A. Further, R 6 is selected from hydrogen, (R)-methyl, (R)-isobutyl, (R)-sec-butyl, (R)-isopropyl, and —CH 2 -phenyl. Further, at least one of R 1 and R 6 is other than hydrogen.
- R 7a and R 7b are each hydrogen. Alternatively, R 7a and R 7b are taken together to form ⁇ O.
- a first embodiment of the present invention is directed to a compound represented by Structural Formula (I):
- R 1 is selected from hydrogen, —(C 1 -C 8 )alkyl, —(C 2 -C 4 )alkylene-O—(C 1 -C 4 )alkyl, —(C 0 -C 3 )alkylene-(saturated heterocycle), —(C 0 -C 3 )alkylene-(C 3 -C 7 )cycloalkyl, —C(O)—(C 1 -C 3 )alkylene-N(R 2 )(R 3 ), or
- R 2 and R 3 taken together with the nitrogen atom to which they are bound form a 4-7 membered saturated heterocyclyl, wherein the heterocyclyl is optionally substituted with fluoro, wherein the values for the remaining variables are as defined in the first embodiment or in the values or alternative values described above.
- R 1 is selected from hydrogen; (C 1 -C 3 )straight alkyl optionally substituted with one or more of: 1 to 5 methyl groups, a single hydroxy group, a single methoxy group, 1 to 3 fluoro groups, a single saturated heterocycle, and a single (C 3 -C 7 )cycloalkyl group; (C 3 -C 7 )cycloalkyl; tetrahydrofuranyl; and —C(O)—CH 2 —N(R 2 )(R 3 ), wherein R 2 and R 3 are simultaneously methyl; R 2 is hydrogen and R 3 is C 3 -C 7 cycloalkyl; or R 2 and R 3 , taken together with the nitrogen atom to which they are bound form a pyrrolidinyl ring optionally substituted with fluoro, or
- R 1 taken together with a ring atom adjacent to the nitrogen atom to which R 1 is bound forms a pyrrolidinyl or piperidinyl ring fused to ring A, wherein the pyrrolidinyl or piperidinyl ring fused to ring A is optionally substituted with hydroxy or fluorine wherein the values for the remaining variables are as defined in the first embodiment or in the values or alternative values described above.
- the compound of the present invention is represented by Structural Formula (I), or a pharmaceutically acceptable salt thereof, wherein:
- ring A is selected from
- R 6a is selected from hydrogen and methyl
- R 6 is selected from hydrogen, (C 1 -C 4 )alkyl optionally substituted with hydroxy or phenyl; or
- R 6 taken together with R 1 and the nitrogen atom and the carbon atom to which they are respectively bound form a pyrrolidinyl or piperidinyl ring fused to ring A, wherein the pyrrolidinyl or piperidinyl ring is optionally substituted with —OH or —F; or
- R 6 and R 6a are taken together with the carbon atom to which they are both bound to form a cyclopropyl ring;
- R 7a and R 7b are each hydrogen or are taken together to form ⁇ O; wherein the values for the remaining variables are as defined in the first embodiment or aspects thereof or in the values or alternative values described above.
- the compounds of the second embodiment are represented by Structural Formula (II), (IIIa), (IVa), (Va) or (VIa):
- the compound of the present invention is represented by Structural Formula (I), or a pharmaceutically acceptable salt thereof, wherein:
- X is selected from fluoro, chloro, methoxy, trifluoromethyl, and dimethylamino
- R 1 is selected from ethyl, propyl, (C 3 -C 5 )branched alkyl, (C 3 -C 5 )cycloalkyl, (C 1 -C 3 )alkylene-cyclopropyl, —C(O)CH 2 NH-cyclopentyl, and —C(O)CH 2 -pyrrolidin-1-yl, wherein R 1 is optionally substituted with fluoro, wherein the values for the remaining variables are as defined in the first or second embodiments or aspects thereof or in the values or alternative values described above.
- X is selected from fluoro, chloro, methoxy, trifluoromethyl, and dimethylamino;
- R 1 is selected from 3-fluoroethyl, propyl, isopropyl, sec-butyl, tert-butyl, (C 3 -C 5 )cycloalkyl, —C(CH 3 ) 2 -cyclopropyl, —C(O)CH 2 NH-cyclopentyl, —C(O)CH 2 -(3-fluoropyrrolidin-1-yl); and when X is methoxy or dimethylamino, R 1 is further selected from tert-pentyl, wherein the values for the remaining variables are as defined in the first or second embodiments or aspects thereof or in the values or alternative values described above.
- the compound of the present invention is represented by Structural Formula (I), or a pharmaceutically acceptable salt thereof, wherein:
- X is fluoro
- R 1 is selected from hydrogen, (C 1 -C 4 )alkyl, wherein the values for the remaining variables are as defined in the first or second embodiments or aspects thereof or in the values or alternative values described above.
- R 1 is selected from isopropyl, propyl or ethyl, wherein the values for the remaining variables are as defined in the first or second embodiments or aspects thereof or in the values or alternative values described above.
- the compound of the present invention is represented by Structural Formula (I), or a pharmaceutically acceptable salt thereof, wherein:
- X is fluoro
- R 1 is selected from hydrogen, (C 1 -C 4 )alkyl
- R 6 is selected from hydrogen, (R)-(C 1 -C 4 )alkyl, or —CH 2 -phenyl, or
- R 1 and R 6 taken together with the nitrogen atom and the carbon atom to which they are respectively bound form a pyrrolidinyl ring fused to ring A;
- R 7a and R 7b are each hydrogen or are taken together to form ⁇ O, wherein at least one of R 1 , and R 6 is other than hydrogen, wherein the values for the remaining variables are as defined in the first or second embodiments or aspects thereof or in the values or alternative values described above.
- R 1 is selected from hydrogen, methyl, isobutyl, and tert-butyl;
- R 6 is selected from hydrogen, (R)-methyl, (R)-isobutyl, (R)-sec-butyl, (R)-isopropyl, and —CH 2 -phenyl. “(R)” signifies the chirality at the carbon atom to which R 6 is attached. Specific structures are as follows:
- R 1 and R 6 taken together with the nitrogen atom and the carbon atom to which they are respectively bound form a pyrrolidinyl ring fused to ring A.
- the values for the remaining variables are as defined in the first or second embodiments or aspects thereof or in the values or alternative values described above.
- the compound of the invention is represented by any one of the structural formulas described in Tables 1, 2, 3 or 4, or a pharmaceutically acceptable salt thereof.
- the compound of the invention is a compound selected from any one of Compounds 100, 103, 110, 112, 113, 114, 115, 118, 119, 120, 121, 123, 124, 125, 126, 127, 128, 129, 130, 132, 135, 138, 141, 142, 143, 144, 145, 148, and 149 or a pharmaceutically acceptable salt thereof.
- the compound of the invention is a compound selected from any one of Compounds 300, 304, and 307 or a pharmaceutically acceptable salt thereof.
- the compound of the invention is a compound selected from any one of Compounds 400, 404, 405, 406, 407, 408, 409, 410, 412, 413, 416, 417, 419, 421, 422, 423, 424, 427, 428, and 429 or a pharmaceutically acceptable salt thereof.
- Alkyl means an optionally substituted saturated aliphatic branched or straight-chain monovalent hydrocarbon radical having the specified number of carbon atoms.
- (C 1 -C 6 ) alkyl means a radical having from 1-6 carbon atoms in a linear or branched arrangement.
- (C 1 -C 6 )alkyl includes methyl, ethyl, propyl, butyl, pentyl and hexyl.
- Alkylene means an optionally substituted saturated aliphatic branched or straight-chain divalent hydrocarbon radical having the specified number of carbon atoms.
- (C 1 -C 6 )alkylene means a divalent saturated aliphatic radical having from 1-6 carbon atoms in a linear arrangement, e.g., —[(CH 2 ) n ]—, where n is an integer from 1 to 6, “(C 1 -C 6 )alkylene” includes methylene, ethylene, propylene, butylene, pentylene and hexylene.
- (C 1 -C 6 )alkylene means a divalent saturated radical having from 1-6 carbon atoms in a branched arrangement, for example: —[(CH 2 CH 2 CH 2 CH 2 CH(CH 3 )]—, —[(CH 2 CH 2 CH 2 CH 2 C(CH 3 ) 2 ]—, —[(CH 2 C(CH 3 ) 2 CH(CH 3 ))]—, and the like.
- a specific branched C 3 -alkylene is
- Each alkyl or alkylene in Structural Formula I is optionally and independently substituted with one or more substituents independently selected from halo, —OH, ⁇ O, —O—(C 1 -C 4 )alkyl, fluoro-substituted-(C 1 -C 4 )alkyl, —S(O) m —(C 1 -C 4 )alkyl and —N(R 5 )(R 5 ).
- Aryl or “aromatic” means an aromatic monocyclic or polycyclic (e.g. bicyclic or tricyclic) carbocyclic ring system.
- aryl is a 6-12 membered monocylic or bicyclic system.
- Aryl systems include, but not limited to, phenyl, naphthalenyl, fluorenyl, indenyl, azulenyl, and anthracenyl.
- Carbocyclyl means a cyclic group with only ring carbon atoms. “Carbocyclyl” includes 3-12 membered saturated or unsaturated aliphatic cyclic hydrocarbon rings or 6-12 membered aryl rings. A carbocyclyl moiety can be monocyclic, fused bicyclic, bridged bicyclic, spiro bicyclic, or polycyclic.
- Monocyclic carbocyclyls are saturated or unsaturated aliphatic cyclic hydrocarbon rings or aromatic hydrocarbon rings having the specified number of carbon atoms.
- Monocyclic carbocyclyls include cycloalkyl, cycloalkenyl, cycloalkynyl and phenyl.
- a fused bicyclic carbocyclyl has two rings which have two adjacent ring atoms in common.
- the first ring is a monocyclic carbocyclyl and the second ring is a monocyclic carbocyclyl or a monocyclic heterocyclyl.
- a bridged bicyclic carbocyclyl has two rings which have three or more adjacent ring atoms in common.
- the first ring is a monocyclic carbocyclyl and the second ring is a monocyclic carbocyclyl or a monocyclic heterocyclyl.
- a spiro bicyclic carbocyclyl has two rings which have only one ring atom in common.
- the first ring is a monocyclic carbocyclyl and the second ring is a monocyclic carbocyclyl or a monocyclic heterocyclyl.
- Polycyclic carbocyclyls have more than two rings (e.g., three rings resulting in a tricyclic ring system) and adjacent rings have at least one ring atom in common.
- the first ring is a monocyclic carbocyclyl and the remainder of the ring structures are monocyclic carbocyclyls or monocyclic heterocyclyls.
- Polycyclic ring systems include fused, bridged and spiro ring systems.
- a fused polycyclic ring system has at least two rings that have two adjacent ring atoms in common.
- a spiro polycyclic ring system has at least two rings that have only one ring atom in common.
- a bridged polycyclic ring system has at least two rings that have three or more adjacent ring atoms in common.
- Cycloalkyl means a saturated aliphatic cyclic hydrocarbon ring.
- C 3 -C 7 cycloalkyl means a hydrocarbon radical of a (3-7 membered) saturated aliphatic cyclic hydrocarbon ring.
- a C 3 -C 7 cycloalkyl includes, but is not limited to cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl.
- “Cycloalkene” means an aliphatic cyclic hydrocarbon ring having one or more double bonds in the ring.
- Cycloalkyne means an aliphatic cyclic hydrocarbon ring having one or more triple bonds in the ring.
- Hetero refers to the replacement of at least one carbon atom member in a ring system with at least one heteroatom selected from N, S, and O. “Hetero” also refers to the replacement of at least one carbon atom member in a acyclic system.
- a hetero ring system or a hetero acyclic system may have 1, 2, 3 or 4 carbon atom members replaced by a heteroatom.
- Heterocyclyl means a cyclic 4-12 membered saturated or unsaturated aliphatic or aromatic ring containing 1, 2, 3, 4 or 5 heteroatoms independently selected from N, O or S. When one heteroatom is S, it can be optionally mono- or di-oxygenated (i.e. —S(O)— or —S(O) 2 —).
- the heterocyclyl can be monocyclic, fused bicyclic, bridged bicyclic, spiro bicyclic or polycyclic.
- “Saturated heterocyclyl” means an aliphatic heterocyclyl group without any degree of unsaturation (i.e., no double bond or triple bond). It can be monocyclic, fused bicyclic, bridged bicyclic, spiro bicyclic or polycyclic.
- Examples of monocyclic saturated heterocyclyls include, but are not limited to, azetidine, pyrrolidine, piperidine, piperazine, azepane, hexahydropyrimidine, tetrahydrofuran, tetrahydropyran, morpholine, thiomorpholine, thiomorpholine 1,1-dioxide, tetrahydro-2H-1,2-thiazine, tetrahydro-2H-1,2-thiazine 1,1-dioxide, isothiazolidine, isothiazolidine 1,1-dioxide.
- a fused bicyclic heterocyclyl has two rings which have two adjacent ring atoms in common.
- the first ring is a monocyclic heterocyclyl and the second ring is a monocyclic carbocycle (such as a cycloalkyl or phenyl) or a monocyclic heterocyclyl.
- the second ring is a (C 3 -C 6 )cycloalkyl, such as cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl.
- the second ring is phenyl.
- fused bicyclic heterocyclyls include, but are not limited to, octahydrocyclopenta[c]pyrrolyl, indoline, isoindoline, 2,3-dihydro-1H-benzo[d]imidazole, 2,3-dihydrobenzo[d]oxazole, 2,3-dihydrobenzo[d]thiazole, octahydrobenzo[d]oxazole, octahydro-1H-benzo[d]imidazole, octahydrobenzo[d]thiazole, octahydrocyclopenta[c]pyrrole, 3-azabicyclo[3.1.0]hexane, and 3-azabicyclo[3.2.0]heptane.
- a spiro bicyclic heterocyclyl has two rings which have only one ring atom in common.
- the first ring is a monocyclic heterocyclyl and the second ring is a monocyclic carbocycle (such as a cycloalkyl or phenyl) or a monocyclic heterocyclyl.
- the second ring is a (C 3 -C 6 )cycloalkyl.
- the second ring is phenyl.
- Example of spiro bicyclic heterocyclyl includes, but are not limited to, azaspiro[4.4]nonane, 7-azaspiro[4.4]nonane, azasprio[4.5]decane, 8-azaspiro[4.5]decane, azaspiro[5.5]undecane, 3-azaspiro[5.5]undecane and 3,9-diazaspiro[5.5]undecane.
- a bridged bicyclic heterocyclyl has two rings which have three or more adjacent ring atoms in common.
- the first ring is a monocyclic heterocyclyl and the other ring is a monocyclic carbocycle (such as a cycloalkyl or phenyl) or a monocyclic heterocyclyl.
- bridged bicyclic heterocyclyls include, but are not limited to, azabicyclo[3.3.1]nonane, 3-azabicyclo[3.3.1]nonane, azabicyclo[3.2.1]octane, 3-azabicyclo[3.2.1]octane, 6-azabicyclo[3.2.1]octane and azabicyclo[2.2.2]octane, 2-azabicyclo[2.2.2]octane.
- Polycyclic heterocyclyls have more than two rings, one of which is a heterocyclyl (e.g., three rings resulting in a tricyclic ring system) and adjacent rings having at least one ring atom in common.
- Polycyclic ring systems include fused, bridged and spiro ring systems.
- a fused polycyclic ring system has at least two rings that have two adjacent ring atoms in common.
- a spiro polycyclic ring system has at least two rings that have only one ring atom in common.
- a bridged polycyclic ring system has at least two rings that have three or more adjacent ring atoms in common.
- Heteroaryl or “heteroaromatic ring” means a 5-12 membered monovalent heteroaromatic monocyclic or bicylic ring radical.
- a herteroaryl contains 1, 2, 3 or 4 heteroatoms independently selected from N, O, and S.
- Heteroaryls include, but are not limited to furan, oxazole, thiophene, 1,2,3-triazole, 1,2,4-triazine, 1,2,4-triazole, 1,2,5-thiadiazole 1,1-dioxide, 1,2,5-thiadiazole 1-oxide, 1,2,5-thiadiazole, 1,3,4-oxadiazole, 1,3,4-thiadiazole, 1,3,5-triazine, imidazole, isothiazole, isoxazole, pyrazole, pyridazine, pyridine, pyridine-N-oxide, pyrazine, pyrimidine, pyrrole, tetrazole, and thiazole.
- Bicyclic heteroaryl rings include, but are not limited to, bicyclo[4.4.0] and bicyclo[4.3.0] fused ring systems such as indolizine, indole, isoindole, indazole, benzimidazole, benzthiazole, purine, quinoline, isoquinoline, cinnoline, phthalazine, quinazoline, quinoxaline, 1,8-naphthyridine, and pteridine.
- each carbocyclyl or heterocyclyl portion of a substituent of ring A or the saturated heterocyclic ring fused to ring A is optionally and independently substituted.
- substituents include halo, —(C 1 -C 4 )alkyl, —OH, ⁇ O, —O—(C 1 -C 4 )alkyl, —(C 1 -C 4 )alkylene-O—(C 1 -C 4 )alkyl, halo-substituted-(C 1 -C 4 )alkyl, halo-substituted-O—(C 1 -C 4 )alkyl, and —C(O)—(C 1 -C 4 )alkyl.
- Halogen used herein refers to fluorine, chlorine, bromine, or iodine.
- Alkoxy means an alkyl radical attached through an oxygen linking atom.
- (C 1 -C 6 )-alkoxy includes methoxy, ethoxy, propoxy, butoxy, pentoxy and hexoxy.
- Haloalkyl and halocycloalkyl include mono, poly, and perhaloalkyl groups where each halogen is independently selected from fluorine, chlorine, and bromine.
- Halogen and “halo” are interchangeably used herein and each refers to fluorine, chlorine, bromine, or iodine.
- Fluoro means —F.
- fluoro-substituted-(C 1 -C 4 )alkyl means a (C 1 -C 4 )alkyl substituted with one or more —F groups.
- fluoro-substituted-(C 1 -C 4 )alkyl include, but are not limited to, —CF 3 , —CH 2 CF 3 , —CH 2 CF 2 H, —CH 2 CH 2 F and —CH 2 CH 2 CF 3 .
- “Naturally occurring amino acid side chain moiety” refers to any amino acid side chain moiety present in a natural amino acid.
- Another embodiment of the present invention is a pharmaceutical composition
- a pharmaceutical composition comprising one or more pharmaceutically acceptable carrier and/or diluent and a compound disclosed herein or a pharmaceutically acceptable salt thereof.
- “Pharmaceutically acceptable carrier” and “pharmaceutically acceptable diluent” means non-therapeutic components that are of sufficient purity and quality for use in the formulation of a composition of the invention that, when appropriately administered to an animal or human, typically do not produce an adverse reaction, and that are used as a vehicle for a drug substance (i.e. a compound of the present invention).
- compositions of the present invention are also included.
- an acid salt of a compound of the present invention containing an amine or other basic group can be obtained by reacting the compound with a suitable organic or inorganic acid, resulting in pharmaceutically acceptable anionic salt forms.
- anionic salts include the acetate, benzenesulfonate, benzoate, bicarbonate, bitartrate, bromide, calcium edetate, camsylate, carbonate, chloride, citrate, dihydrochloride, edetate, edisylate, estolate, esylate, fumarate, glyceptate, gluconate, glutamate, glycollylarsanilate, hexylresorcinate, hydrobromide, hydrochloride, hydroxynaphthoate, iodide, isethionate, lactate, lactobionate, malate, maleate, mandelate, mesylate, methylsulfate, mucate, napsylate, nitrate, pamoate, pantothenate, phosphate/diphosphate, polygalacturonate, salicylate, stearate, subacetate, succinate, sulfate, tannate,
- Salts of the compounds of the present invention containing a carboxylic acid or other acidic functional group can be prepared by reacting with a suitable base.
- a suitable base which affords a pharmaceutically acceptable cation, which includes alkali metal salts (especially sodium and potassium), alkaline earth metal salts (especially calcium and magnesium), aluminum salts and ammonium salts, as well as salts made from physiologically acceptable organic bases such as trimethylamine, triethylamine, morpholine, pyridine, piperidine, picoline, dicyclohexylamine, N,N′-dibenzylethylenediamine, 2-hydroxyethylamine, bis-(2-hydroxyethyl)amine, tri-(2-hydroxyethyl)amine, procaine, dibenzylpiperidine, dehydroabietylamine, N,N′-bisdehydroabietylamine, glucamine, N-methylglucamine, collidine, quinine, quinoline,
- the invention also includes various isomers and mixtures thereof. Certain of the compounds of the present invention may exist in various stereoisomeric forms. Stereoisomers are compounds which differ only in their spatial arrangement. Enantiomers are pairs of stereoisomers whose mirror images are not superimposable, most commonly because they contain an asymmetrically substituted carbon atom that acts as a chiral center. “Enantiomer” means one of a pair of molecules that are mirror images of each other and are not superimposable. Diastereomers are stereoisomers that are not related as mirror images, most commonly because they contain two or more asymmetrically substituted carbon atoms. “R” and “S” represent the configuration of substituents around one or more chiral carbon atoms. When a chiral center is not defined as R or S, either a pure enantiomer or a mixture of both configurations is present.
- Racemate or “racemic mixture” means a compound of equimolar quantities of two enantiomers, wherein such mixtures exhibit no optical activity; i.e., they do not rotate the plane of polarized light.
- the compounds of the invention may be prepared as individual isomers by either isomer-specific synthesis or resolved from an isomeric mixture.
- Conventional resolution techniques include forming the salt of a free base of each isomer of an isomeric pair using an optically active acid (followed by fractional crystallization and regeneration of the free base), forming the salt of the acid form of each isomer of an isomeric pair using an optically active amine (followed by fractional crystallization and regeneration of the free acid), forming an ester or amide of each of the isomers of an isomeric pair using an optically pure acid, amine or alcohol (followed by chromatographic separation and removal of the chiral auxiliary), or resolving an isomeric mixture of either a starting material or a final product using various well known chromatographic methods.
- the stereochemistry of a disclosed compound is named or depicted by structure
- the named or depicted stereoisomer is at least 60%, 70%, 80%, 90%, 99% or 99.9% by weight pure relative to the other stereoisomers.
- the depicted or named enantiomer is at least 60%, 70%, 80%, 90%, 99% or 99.9% by weight optically pure. Percent optical purity by weight is the ratio of the weight of the enantiomer that is present divided by the combined weight of the enantiomer that is present and the weight of its optical isomer.
- the present invention also provides a method of treating or preventing a subject with a tetracycline-responsive disease or disorder comprising administering to the subject an effective amount of a compound of the present invention or a pharmaceutically acceptable salt thereof.
- Tetracycline-responsive disease or disorder refers to a disease or disorder that can be treated, prevented, or otherwise ameliorated by the administration of a tetracycline compound of the present invention.
- Tetracycline-responsive disease or disorder includes infections, cancer, inflammatory disorders, autoimmune disease, arteriosclerosis, corneal ulceration, emphysema, arthritis, osteoporosis, osteoarthritis, multiple sclerosis, osteosarcoma, osteomyelitis, bronchiectasis, chronic pulmonary obstructive disease, skin and eye diseases, periodontitis, osteoporosis, rheumatoid arthritis, ulcerative colitis, prostatitis, tumor growth and invasion, metastasis, diabetes, diabetic proteinuria, panbronchiolitis, aortic or vascular aneurysms, skin tissue wounds, dry eye, bone, cartilage degradation, malaria, senescence, diabetes, vascular stroke, neurodegenerative disorders, cardiac disease, juvenile diabetes, acute and chronic bron
- a method to treat any disease or disease state that could benefit from modulating the expression and/or function of nitric oxide, metalloproteases, proinflammatory mediators and cytokines, reactive oxygen species, components of the immune response, including chemotaxis, lymphocyte transformation, delayed hypersensitivity, antibody production, phagocytosis, and oxidative metabolism of phagocytes is covered.
- a method to treat any disease or disease state that could benefit from modulating the expression and/or function of C-reactive protein, signaling pathways (e.g., FAK signaling pathway), and/or augment the expression of COX-2 and PGE 2 production is covered.
- a method to treat any disease or disease state that could benefit from inhibition of neovascularization is covered.
- Compounds of the invention can be used to prevent or treat important mammalian and veterinary diseases such as diarrhea, urinary tract infections, infections of skin and skin structure including wounds, cellulitis, and abscesses, ear, nose and throat infections, mastitis and the like.
- important mammalian and veterinary diseases such as diarrhea, urinary tract infections, infections of skin and skin structure including wounds, cellulitis, and abscesses, ear, nose and throat infections, mastitis and the like.
- methods for treating neoplasms using tetracycline compounds of the invention are also included (van der Bozert et al., Cancer Res., 48: 6686-6690 (1988)).
- Infections that can be treated using compounds of the invention or a pharmaceutically acceptable salt thereof include, but are not limited to, skin infections, GI infections, urinary tract infections, genito-urinary infections, respiratory tract infections, sinuses infections, middle ear infections, systemic infections, intra-abdominal infections, pyelonephritis, pneumonia, bacterial vaginosis, streptococcal sore throat, chronic bacterial prostatitis, gynecological and pelvic infections, sexually transmitted bacterial diseases, ocular and otic infections, cholera, influenza, bronchitis, acne, psoriasis, rosacea, impetigo, malaria, sexually transmitted disease including syphilis and gonorrhea, Legionnaires' disease, Lyme disease, Rocky Mountain spotted fever, Q fever, typhus, bubonic plague, gas gangrene, hospital acquired infections, leptospirosis, whooping cough, anthrax and infections caused by the agents responsible
- the infection is a respiratory infection.
- the respiratory infection is Community-Acquired Bacterial Pneumonia (CABP).
- CABP Community-Acquired Bacterial Pneumonia
- the respiratory infection for example, CABP is caused by a bacterium selected from S. aureus, S. pneumoniae, S. pyogenes, H. influenza, M. catarrhalis and Legionella pneumophila.
- the infection is a skin infection.
- the skin infection is an acute bacterial skin and skin structure infection (ABSSSI).
- ABSSSI acute bacterial skin and skin structure infection
- the skin infection for example ABSSSI is caused by a bacterium selected from S. aureus , CoNS, S. pyogenes, S. agalactiae, E. faecalis and E. faecium.
- the infection can be caused by a bacterium (e.g. an anaerobic or aerobic bacterium).
- a bacterium e.g. an anaerobic or aerobic bacterium.
- the infection is caused by a Gram-positive bacterium.
- the infection is caused by a Gram-positive bacterium selected from class Bacilli, including, but not limited to, Staphylococcus spp., Streptococcus spp., Enterococcus spp., Bacillus spp., Listeria spp.; phylum Actinobacteria, including, but not limited to, Propionibacterium spp., Corynebacterium spp., Nocardia spp., Actinobacteria spp., and class Clostridia, including, but not limited to, Clostridium spp.
- the infection is caused by a Gram-positive bacterium selected from S. aureus , CoNS, S. pneumoniae, S. pyogenes, S. agalactiae, E. faecalis and E. faecium.
- a Gram-positive bacterium selected from S. aureus , CoNS, S. pneumoniae, S. pyogenes, S. agalactiae, E. faecalis and E. faecium.
- the infection is caused by a Gram-negative bacterium.
- the infection is caused by a phylum Proteobacteria (e.g., Betaproteobacteria and Gammaproteobacteria), including Escherichia coli, Salmonella, Shigella , other Enterobacteriaceae, Pseudomonas, Moraxella, Helicobacter, Stenotrophomonas, Bdellovibrio , acetic acid bacteria, Legionella or alpha-proteobacteria such as Wolbachia .
- a phylum Proteobacteria e.g., Betaproteobacteria and Gammaproteobacteria
- Escherichia coli Salmonella, Shigella , other Enterobacteriaceae, Pseudomonas, Moraxella, Helicobacter, Stenotrophomonas, Bdellovibrio
- acetic acid bacteria Legionella or alpha-proteobacteria
- the infection is caused by a Gram-negative bacterium selected from cyanobacteria, spirochaetes, green sulfur or green non-sulfur bacteria.
- the infection is caused by a Gram-negative bacteria selected from Enterobactericeae (e.g., E.
- coli Klebsiella pneumoniae including those containing extended-spectrum ⁇ -lactamases and/or carbapenemases
- Bacteroidetes e.g., Bacteroides fragilis
- Vibrionaceae Vibrio cholerae
- Pasteurellaceae e.g., Haemophilus influenzae
- Pseudomonadaceae e.g., Pseudomonas aeruginosa
- Neisseriaceae e.g.
- the infection is caused by Gram-negative bacterium selected from the group consisting of Enterobactericeae (e.g., E. coli, Klebsiella pneumoniae ), Pseudomonas , and Acinetobacter spp.
- the infection is caused by an organism selected from the group consisting of K. pneumoniae, Salmonella, E. hirae, A. baumanii, M. catarrhais, H. influenzae, P. aeruginosa, E. faecium, E. coli, S. aureus , and E. faecalis.
- the infection is cause by a gram negative bacterium selected from H. influenza, M. catarrhalis and Legionella pneumophila.
- the infection is caused by an organism that grows intracellularly as part of its infection process.
- the infection is caused by an organism selected from the group consisting of order Rickettsiales; phylum Chlamydiae; order Chlamydiales; Legionella spp.; class Mollicutes, including, but not limited to, Mycoplasma spp. (e.g. Mycoplasma pneumoniae ); Mycobacterium spp. (e.g. Mycobacterium tuberculosis ); and phylum Spriochaetales (e.g. Borrelia spp. and Treponema spp.).
- Mycoplasma spp. e.g. Mycoplasma pneumoniae
- Mycobacterium spp. e.g. Mycobacterium tuberculosis
- phylum Spriochaetales e.g. Borrelia spp. and Treponema spp.
- the infection is caused by a Category A Biodefense organism as described at http://www.bt.cdc.gov/agent/agentlist-category.asp, the entire teachings of which are incorporated herein by reference.
- Category A organisms include, but are not limited to, Bacillus anthracis (anthrax), Yersinia pestis (plague), Clostridium botulinum (botulism) or Francisella tularensis (tularemia).
- the infection is a Bacillus anthracis infection. “ Bacillus anthracis infection” includes any state, diseases, or disorders caused or which result from exposure or alleged exposure to Bacillus anthracis or another member of the Bacillus cereus group of bacteria.
- Additional infections that can be treated using compounds of the invention or a pharmaceutically acceptable salt thereof include, but are not limited to, anthrax, botulism, bubonic plague, and tularemia.
- the infection is caused by a Category B Biodefense organism as described at http://www.bt.cdc.gov/agent/agentlist-category.asp, the entire teachings of which are incorporated herein by reference.
- Category B organisms include, but are not limited to, Brucella spp, Clostridium perfringens, Salmonella spp., Escherichia coli O157:H7, Shigella spp., Burkholderia mallei, Burkholderia pseudomallei, Chlamydia psittaci, Coxiella burnetii , Staphylococcal enterotoxin B, Rickettsia prowazekii, Vibrio cholerae , and Cryptosporidium parvum.
- Additional infections that can be treated using compounds of the invention or a pharmaceutically acceptable salt thereof include, but are not limited to, Brucellosis, Clostridium perfringens , food-borne illnesses, Glanders, Melioidosis, Psittacosis, Q fever, and water-borne illnesses.
- the infection can be caused by one or more than one organism described above.
- infections include, but are not limited to, intra-abdominal infections (often a mixture of a gram-negative species like E. coli and an anaerobe like B. fragilis ), diabetic foot (various combinations of Streptococcus, Serratia, Staphylococcus and Enterococcus spp., anaerobes (S. E. Dowd, et al., PloS one 2008; 3:e3326, the entire teachings of which are incorporated herein by reference) and respiratory disease (especially in patients that have chronic infections like cystic fibrosis—e.g., S. aureus plus P.
- aeruginosa or H. influenzae atypical pathogens
- wounds and abscesses variant gram-negative and gram-positive bacteria, notably MSSA/MRSA, coagulase-negative staphylococci, enterococci, Acinetobacter, P. aeruginosa, E. coli, B. fragilis
- bloodstream infections (13% were polymicrobial (H. Wisplinghoff, et al., Clin. Infect. Dis. 2004; 39:311-317, the entire teachings of which are incorporated herein by reference)).
- the infection is caused by an organism resistant to one or more antibiotics.
- the infection is caused by an organism resistant to tetracycline or any member of first and second generation of tetracycline antibiotics (e.g., doxycycline or minocycline).
- tetracycline antibiotics e.g., doxycycline or minocycline.
- the infection is caused by an organism resistant to methicillin.
- the infection is caused by an organism resistant to vancomycin.
- the infection is caused by an organism resistant to a quinolone or fluoroquinolone.
- the infection is caused by an organism resistant to tigecycline or any other tetracycline derivative. In a particular embodiment, the infection is caused by an organism resistant to tigecycline.
- the infection is caused by an organism resistant to a ⁇ -lactam or cephalosporin antibiotic or an organism resistant to penems or carbapenems.
- the infection is caused by an organism resistant to an antimicrobial peptide or a biosimilar therapeutic treatment.
- Antimicrobial peptides also called host defense peptides
- antimicrobial peptides are an evolutionarily conserved component of the innate immune response and are found among all classes of life.
- antimicrobial peptide refers to any naturally occurring molecule or any semi/synthetic molecule that are analogs of anionic peptides, linear cationic ⁇ -helical peptides, cationic peptides enriched for specific amino acids (i.e. rich in proline, arginine, phenylalanine, glycine, tryptophan), and anionic and cationic peptides that contain cystein and form disulfide bonds.
- the infection is caused by an organism resistant to macrolides, lincosamides, streptogramin antibiotics, oxazolidinones, and pleuromutilins.
- the infection is caused by an organism resistant to PTK0796 (7-dimethylamino, 9-(2,2-dimethyl-propyl)-aminomethylcycline).
- the infection is caused by a multidrug-resistant pathogen (having intermediate or full resistance to any two or more antibiotics).
- the tetracycline responsive disease or disorder is not a bacterial infection.
- the tetracycline compounds of the invention are essentially non-antibacterial.
- non-antibacterial compounds of the invention may have MIC values greater than about 4 ⁇ g/ml (as measured by assays known in the art and/or the assay given in Example 151.
- the tetracycline compounds of the invention have both antibacterial and non-antibacterial effects.
- Tetracycline responsive disease or disorder also includes diseases or disorders associated with inflammatory process associated states (IPAS).
- inflammatory process associated state includes states in which inflammation or inflammatory factors (e.g., matrix metalloproteinases (MMPs), nitric oxide (NO), TNF, interleukins, plasma proteins, cellular defense systems, cytokines, lipid metabolites, proteases, toxic radicals, adhesion molecules, etc.) are involved or are present in an area in aberrant amounts, e.g., in amounts which may be advantageous to alter, e.g., to benefit the subject.
- MMPs matrix metalloproteinases
- NO nitric oxide
- TNF interleukins
- plasma proteins e.g., plasma proteins
- cellular defense systems e.g., cytokines, lipid metabolites, proteases, toxic radicals, adhesion molecules, etc.
- the inflammatory process is the response of living tissue to damage.
- the cause of inflammation may be due to physical damage, chemical substances, micro-organisms, tissue necrosis, cancer or other agents.
- Acute inflammation is short-lasting, lasting only a few days. If it is longer lasting however, then it may be referred to as chronic inflammation.
- IPASs include inflammatory disorders. Inflammatory disorders are generally characterized by heat, redness, swelling, pain and loss of function. Examples of causes of inflammatory disorders include, but are not limited to, microbial infections (e.g., bacterial and fungal infections), physical agents (e.g., burns, radiation, and trauma), chemical agents (e.g., toxins and caustic substances), tissue necrosis and various types of immunologic reactions.
- microbial infections e.g., bacterial and fungal infections
- physical agents e.g., burns, radiation, and trauma
- chemical agents e.g., toxins and caustic substances
- inflammatory disorders can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include, but are not limited to, osteoarthritis, rheumatoid arthritis, acute and chronic infections (bacterial and fungal, including diphtheria and pertussis); acute and chronic bronchitis, sinusitis, and upper respiratory infections, including the common cold; acute and chronic gastroenteritis and colitis; inflammatory bowel disorder; acute and chronic cystitis and urethritis; vasculitis; sepsis; nephritis; pancreatitis; hepatitis; lupus; inflammatory skin disorders including, for example, eczema, dermatitis, psoriasis, pyoderma gangrenosum, acne rosacea, and acute and chronic dermatitis; acute and chronic conjunctivitis; acute and chronic serositis (pericarditis, peritonitis, synovitis, pleuritis and tendinitis);
- IPASs also include matrix metalloproteinase associated states (MMPAS).
- MMPAS include states characterized by aberrant amounts of MMPs or MMP activity.
- MMP's matrix metalloproteinase associated states
- MMP's matrix metalloproteinase associated states
- arteriosclerosis corneal ulceration
- emphysema emphysema
- osteoarthritis emphysema
- multiple sclerosis Liedtke et al., Ann. Neurol. 1998, 44: 35-46; Chandler et al., J. Neuroimmunol.
- MMPAS include those described in U.S. Pat. Nos. 5,459,135; 5,321,017; 5,308,839; 5,258,371; 4,935,412; 4,704,383, 4,666,897, and RE 34,656, incorporated herein by reference in their entirety.
- the IPAS includes disorders described in U.S. Pat. Nos. 5,929,055; and 5,532,227, incorporated herein by reference in their entirety.
- Tetracycline responsive disease or disorder also includes diseases or disorders associated with NO associated states.
- NO associated states includes states which involve or are associated with nitric oxide (NO) or inducible nitric oxide synthase (iNOS).
- NO associated state includes states which are characterized by aberrant amounts of NO and/or iNOS.
- the NO associated state can be treated by administering tetracycline compounds of the invention.
- the disorders, diseases and states described in U.S. Pat. Nos. 6,231,894; 6,015,804; 5,919,774; and 5,789,395 are also included as NO associated states. The entire contents of each of these patents are hereby incorporated herein by reference.
- diseases or disorders associated with NO associated states can be treated using the compounds of the present invention or a pharmaceutically acceptable salt thereof include, but are not limited to, malaria, senescence, diabetes, vascular stroke, neurodegenerative disorders (Alzheimer's disease and Huntington's disease), cardiac disease (reperfusion-associated injury following infarction), juvenile diabetes, inflammatory disorders, osteoarthritis, rheumatoid arthritis, acute, recurrent and chronic infections (bacterial, viral and fungal); acute and chronic bronchitis, sinusitis, and respiratory infections, including the common cold; acute and chronic gastroenteritis and colitis; acute and chronic cystitis and urethritis; acute and chronic dermatitis; acute and chronic conjunctivitis; acute and chronic serositis (pericarditis, peritonitis, synovitis, pleuritis and tendonitis); uremic pericarditis; acute and chronic cholecystis; cystic fibrosis, acute and chronic vaginitis
- the tetracycline responsive disease or disorder is cancer.
- cancers that can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include all solid tumors, i.e., carcinomas e.g., adenocarcinomas, and sarcomas.
- carcinomas e.g., adenocarcinomas
- sarcomas are carcinomas derived from glandular tissue or in which the tumor cells form recognizable glandular structures.
- Sarcomas broadly include tumors whose cells are embedded in a fibrillar or homogeneous substance like embryonic connective tissue.
- carcinomas which may be treated using the methods of the invention include, but are not limited to, carcinomas of the prostate, breast, ovary, testis, lung, colon, and breast.
- the methods of the invention are not limited to the treatment of these tumor types, but extend to any solid tumor derived from any organ system.
- treatable cancers include, but are not limited to, colon cancer, bladder cancer, breast cancer, melanoma, ovarian carcinoma, prostate carcinoma, lung cancer, and a variety of other cancers as well.
- the methods of the invention also cause the inhibition of cancer growth in adenocarcinomas, such as, for example, those of the prostate, breast, kidney, ovary, testes, and colon.
- the cancers treated by methods of the invention include those described in U.S. Pat. Nos. 6,100,248; 5,843,925; 5,837,696; or 5,668,122, incorporated herein by reference in their entirety.
- the tetracycline compounds may be useful for preventing or reducing the likelihood of cancer recurrence, for example, to treat residual cancer following surgical resection or radiation therapy.
- the tetracycline compounds useful according to the invention are especially advantageous as they are substantially non-toxic compared to other cancer treatments.
- the compounds of the invention are administered in combination with standard cancer therapy, such as, but not limited to, chemotherapy.
- Examples of tetracycline responsive states can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof also include neurological disorders which include both neuropsychiatric and neurodegenerative disorders, but are not limited to, such as Alzheimer's disease, dementias related to Alzheimer's disease (such as Pick's disease), Parkinson's and other Lewy diffuse body diseases, senile dementia, Huntington's disease, Gilles de la Tourette's syndrome, multiple sclerosis, amyotrophic lateral sclerosis (ALS), progressive supranuclear palsy, epilepsy, and Creutzfeldt-Jakob disease; autonomic function disorders such as hypertension and sleep disorders, and neuropsychiatric disorders, such as depression, schizophrenia, schizoaffective disorder, Korsakoff's psychosis, mania, anxiety disorders, or phobic disorders; learning or memory disorders, e.g., amnesia or age-related memory loss, attention deficit disorder, dysthymic disorder, major depressive disorder, mania, obsessive
- Further neurological disorders include, for example, those listed in the American Psychiatric Association's Diagnostic and Statistical manual of Mental Disorders (DSM), the most current version of which is incorporated herein by reference in its entirety.
- DSM Diagnostic and Statistical manual of Mental Disorders
- the tetracycline responsive disease or disorder is diabetes.
- Diabetes that can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include, but are not limited to, juvenile diabetes, diabetes mellitus, diabetes type I, or diabetes type II.
- protein glycosylation is not affected by the administration of the tetracycline compounds of the invention.
- the tetracycline compound of the invention is administered in combination with standard diabetic therapies, such as, but not limited to insulin therapy.
- the tetracycline responsive disease or disorder is a bone mass disorder.
- Bone mass disorders that can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include disorders where a subjects bones are disorders and states where the formation, repair or remodeling of bone is advantageous.
- bone mass disorders include osteoporosis (e.g., a decrease in bone strength and density), bone fractures, bone formation associated with surgical procedures (e.g., facial reconstruction), osteogenesis imperfecta (brittle bone disease), hypophosphatasia, Paget's disease, fibrous dysplasia, osteopetrosis, myeloma bone disease, and the depletion of calcium in bone, such as that which is related to primary hyperparathyroidism.
- Bone mass disorders include all states in which the formation, repair or remodeling of bone is advantageous to the subject as well as all other disorders associated with the bones or skeletal system of a subject which can be treated with the tetracycline compounds of the invention.
- the bone mass disorders include those described in U.S. Pat. Nos. 5,459,135; 5,231,017; 5,998,390; 5,770,588; RE 34,656; 5,308,839; 4,925,833; 3,304,227; and 4,666,897, each of which is hereby incorporated herein by reference in its entirety.
- the tetracycline responsive disease or disorder is acute lung injury.
- Acute lung injuries that can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include adult respiratory distress syndrome (ARDS), post-pump syndrome (PPS), and trauma.
- Trauma includes any injury to living tissue caused by an extrinsic agent or event. Examples of trauma include, but are not limited to, crush injuries, contact with a hard surface, or cutting or other damage to the lungs.
- the tetracycline responsive disease or disorders of the invention also include chronic lung disorders.
- chronic lung disorders that can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include, but are not limited, to asthma, cystic fibrosis, chronic obstructive pulmonary disease (COPD), and emphysema.
- COPD chronic obstructive pulmonary disease
- the acute and/or chronic lung disorders that can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include those described in U.S. Pat. Nos. 5,977,091; 6,043,231; 5,523,297; and 5,773,430, each of which is hereby incorporated herein by reference in its entirety.
- the tetracycline responsive disease or disorder is ischemia, stroke, or ischemic stroke.
- the tetracycline compounds of the invention or a pharmaceutically acceptable salt thereof can be used to treat such disorders as described above and in U.S. Pat. Nos. 6,231,894; 5,773,430; 5,919,775 and 5,789,395, incorporated herein by reference.
- the tetracycline compounds of the invention or a pharmaceutically acceptable salt thereof can be used to treat pain, for example, inflammatory, nociceptive or neuropathic pain.
- the pain can be either acute or chronic.
- the tetracycline responsive disease or disorder is a skin wound.
- the invention also provides a method for improving the healing response of the epithelialized tissue (e.g., skin, mucosae) to acute traumatic injury (e.g., cut, burn, scrape, etc.).
- the method includes using a tetracycline compound of the invention or a pharmaceutically acceptable salt thereof to improve the capacity of the epithelialized tissue to heal acute wounds.
- the method may increase the rate of collagen accumulation of the healing tissue.
- the method may also decrease the proteolytic activity in the epithelialized tissue by decreasing the collagenolytic and/or gellatinolytic activity of MMPs.
- the tetracycline compound of the invention or a pharmaceutically acceptable salt thereof is administered to the surface of the skin (e.g., topically).
- the tetracycline compound of the invention or a pharmaceutically acceptable salt thereof is used to treat a skin wound, and other such disorders as described in, for example, U.S. Pat. Nos. 5,827,840; 4,704,383; 4,935,412; 5,258,371; 5,308,839, 5,459,135; 5,532,227; and 6,015,804; each of which is incorporated herein by reference in its entirety.
- the tetracycline responsive disease or disorder is an aortic or vascular aneurysm in vascular tissue of a subject (e.g., a subject having or at risk of having an aortic or vascular aneurysm, etc.).
- the tetracycline compound or a pharmaceutically acceptable salt thereof may be effective to reduce the size of the vascular aneurysm or it may be administered to the subject prior to the onset of the vascular aneurysm such that the aneurysm is prevented.
- the vascular tissue is an artery, e.g., the aorta, e.g., the abdominal aorta.
- the tetracycline compounds of the invention are used to treat disorders described in U.S. Pat. Nos. 6,043,225 and 5,834,449, incorporated herein by reference in their entirety.
- the compounds of the invention or a pharmaceutically acceptable salt thereof can be used alone or in combination with one or more therapeutic agent in the methods of the invention disclosed herein.
- combination with includes co-administration of the tetracycline compound and with the other therapeutic agent or treatment as either a single combination dosage form or as multiple, separate dosage forms, administration of the tetracycline compound first, followed by the other therapeutic agent or treatment and administration of the other therapeutic agent or treatment first, followed by the tetracycline compound.
- the other therapeutic agent may be any agent that is known in the art to treat, prevent, or reduce the symptoms of a tetracycline-responsive disease or disorder.
- the choice of additional therapeutic agent(s) is based upon the particular tetracycline-responsive disease or disorder being treated. Such choice is within the knowledge of a treating physician.
- the other therapeutic agent may be any agent of benefit to the patient when administered in combination with the administration of a tetracycline compound.
- the compounds of the invention or a pharmaceutically acceptable salt thereof can be used alone or in combination with one or more antibiotics and/or immunomodulators (e.g. Deoxycholic acid, Macrokine, Abatacept, Belatacept, Infliximab, Adalimumab, Certolizumab pegol, Afelimomab, Golimumab, and FKBP/Cyclophilin/Calcineurin: Tacrolimus, Ciclosporin, Pimecrolimus).
- antibiotics and/or immunomodulators e.g. Deoxycholic acid, Macrokine, Abatacept, Belatacept, Infliximab, Adalimumab, Certolizumab pegol, Afelimomab, Golimumab, and FKBP/Cyclophilin/Calcineurin: Tacrolimus, Ciclosporin, Pimecrolimus).
- the term “subject” means a mammal in need of treatment or prevention, e.g., companion animals (e.g., dogs, cats, and the like), farm animals (e.g., cows, pigs, horses, sheep, goats and the like) and laboratory animals (e.g., rats, mice, guinea pigs and the like).
- the subject is a human in need of the specified treatment.
- the term “treating” or “treatment” refers to obtaining desired pharmacological and/or physiological effect.
- the effect can include achieving, partially or substantially, one or more of the following results: partially or totally reducing the extent of the disease, disorder or syndrome; ameliorating or improving a clinical symptom or indicator associated with the disorder; delaying, inhibiting or decreasing the likelihood of the progression of the disease, disorder or syndrome.
- preventing or “prevention” refers to reducing the likelihood of the onset or development of disease, disorder or syndrome.
- Effective amount means that amount of active compound agent that elicits the desired biological response in a subject.
- the effective amount of a compound of the invention is from about 0.01 mg/kg/day to about 1000 mg/kg/day, from about 0.1 mg/kg/day to about 100 mg/kg/day, or from about 0.5 mg/kg/day to about 50 mg/kg/day.
- the invention further includes the process for making the composition comprising mixing one or more of the present compounds and an optional pharmaceutically acceptable carrier; and includes those compositions resulting from such a process, which process includes conventional pharmaceutical techniques.
- compositions of the invention include ocular, oral, nasal, transdermal, topical with or without occlusion, intravenous (both bolus and infusion), inhalable, and injection (intraperitoneally, subcutaneously, intramuscularly, intratumorally, or parenterally) formulations.
- the composition may be in a dosage unit such as a tablet, pill, capsule, powder, granule, liposome, ion exchange resin, sterile ocular solution, or ocular delivery device (such as a contact lens and the like facilitating immediate release, timed release, or sustained release), parenteral solution or suspension, metered aerosol or liquid spray, drop, ampoule, auto-injector device, or suppository; for administration ocularly, orally, intranasally, sublingually, parenterally, or rectally, or by inhalation or insufflation.
- a dosage unit such as a tablet, pill, capsule, powder, granule, liposome, ion exchange resin, sterile ocular solution, or ocular delivery device (such as a contact lens and the like facilitating immediate release, timed release, or sustained release), parenteral solution or suspension, metered aerosol or liquid spray, drop, ampoule, auto-injector device, or suppository; for administration
- compositions of the invention suitable for oral administration include solid forms such as pills, tablets, caplets, capsules (each including immediate release, timed release, and sustained release formulations), granules and powders; and, liquid forms such as solutions, syrups, elixirs, emulsions, and suspensions.
- forms useful for ocular administration include sterile solutions or ocular delivery devices.
- forms useful for parenteral administration include sterile solutions, emulsions, and suspensions.
- compositions of the invention may be administered in a form suitable for once-weekly or once-monthly administration.
- an insoluble salt of the active compound may be adapted to provide a depot preparation for intramuscular injection (e.g., a decanoate salt) or to provide a solution for ophthalmic administration.
- the dosage form containing the composition of the invention contains an effective amount of the active ingredient necessary to provide a therapeutic effect.
- the composition may contain from about 5,000 mg to about 0.5 mg (preferably, from about 1,000 mg to about 0.5 mg) of a compound of the invention or salt form thereof and may be constituted into any form suitable for the selected mode of administration.
- the composition may be administered about 1 to about 5 times per day. Daily administration or post-periodic dosing may be employed.
- the composition is preferably in the form of a tablet or capsule containing, e.g., 500 to 0.5 milligrams of the active compound. Dosages will vary depending on factors associated with the particular patient being treated (e.g., age, weight, diet, and time of administration), the severity of the condition being treated, the compound being employed, the mode of administration, and the strength of the preparation.
- the oral composition is preferably formulated as a homogeneous composition, wherein the active ingredient is dispersed evenly throughout the mixture, which may be readily subdivided into dosage units containing equal amounts of a compound of the invention.
- the compositions are prepared by mixing a compound of the invention (or pharmaceutically acceptable salt thereof) with one or more optionally present pharmaceutical carriers (such as a starch, sugar, diluent, granulating agent, lubricant, glidant, binding agent, and disintegrating agent), one or more optionally present inert pharmaceutical excipients (such as water, glycols, oils, alcohols, flavoring agents, preservatives, coloring agents, and syrup), one or more optionally present conventional tableting ingredients (such as corn starch, lactose, sucrose, sorbitol, talc, stearic acid, magnesium stearate, dicalcium phosphate, and any of a variety of gums), and an optional diluent (such as water).
- pharmaceutical carriers such as a
- Binder agents include starch, gelatin, natural sugars (e.g., glucose and beta-lactose), corn sweeteners and natural and synthetic gums (e.g., acacia and tragacanth).
- Disintegrating agents include starch, methyl cellulose, agar, and bentonite.
- Tablets and capsules represent an advantageous oral dosage unit form. Tablets may be sugarcoated or filmcoated using standard techniques. Tablets may also be coated or otherwise compounded to provide a prolonged, control-release therapeutic effect.
- the dosage form may comprise an inner dosage and an outer dosage component, wherein the outer component is in the form of an envelope over the inner component.
- the two components may further be separated by a layer which resists disintegration in the stomach (such as an enteric layer) and permits the inner component to pass intact into the duodenum or a layer which delays or sustains release.
- a layer which resists disintegration in the stomach such as an enteric layer
- enteric and non-enteric layer or coating materials such as polymeric acids, shellacs, acetyl alcohol, and cellulose acetate or combinations thereof may be used.
- Compounds of the invention may also be administered via a slow release composition; wherein the composition includes a compound of the invention and a biodegradable slow release carrier (e.g., a polymeric carrier) or a pharmaceutically acceptable non-biodegradable slow release carrier (e.g., an ion exchange carrier).
- a biodegradable slow release carrier e.g., a polymeric carrier
- a pharmaceutically acceptable non-biodegradable slow release carrier e.g., an ion exchange carrier
- Biodegradable and non-biodegradable slow release carriers are well known in the art.
- Biodegradable carriers are used to form particles or matrices which retain an active agent(s) and which slowly degrade/dissolve in a suitable environment (e.g., aqueous, acidic, basic and the like) to release the agent.
- a suitable environment e.g., aqueous, acidic, basic and the like
- Such particles degrade/dissolve in body fluids to release the active compound(s) therein.
- the particles are preferably nanoparticles or nanoemulsions (e.g., in the range of about 1 to 500 nm in diameter, preferably about 50-200 nm in diameter, and most preferably about 100 nm in diameter).
- a slow release carrier and a compound of the invention are first dissolved or dispersed in an organic solvent.
- the resulting mixture is added into an aqueous solution containing an optional surface-active agent(s) to produce an emulsion.
- the organic solvent is then evaporated from the emulsion to provide a colloidal suspension of particles containing the slow release carrier and the compound of the invention.
- the compound disclosed herein may be incorporated for administration orally or by injection in a liquid form such as aqueous solutions, suitably flavored syrups, aqueous or oil suspensions, flavored emulsions with edible oils such as cottonseed oil, sesame oil, coconut oil or peanut oil and the like, or in elixirs or similar pharmaceutical vehicles.
- Suitable dispersing or suspending agents for aqueous suspensions include synthetic and natural gums such as tragacanth, acacia, alginate, dextran, sodium carboxymethylcellulose, methylcellulose, polyvinyl-pyrrolidone, and gelatin.
- the liquid forms in suitably flavored suspending or dispersing agents may also include synthetic and natural gums.
- sterile suspensions and solutions are desired. Isotonic preparations, which generally contain suitable preservatives, are employed when intravenous administration is desired.
- a parenteral formulation may consist of the active ingredient dissolved in or mixed with an appropriate inert liquid carrier.
- Acceptable liquid carriers usually comprise aqueous solvents and other optional ingredients for aiding solubility or preservation.
- aqueous solvents include sterile water, Ringer's solution, or an isotonic aqueous saline solution.
- Other optional ingredients include vegetable oils (such as peanut oil, cottonseed oil, and sesame oil), and organic solvents (such as solketal, glycerol, and formyl).
- a sterile, non-volatile oil may be employed as a solvent or suspending agent.
- the parenteral formulation is prepared by dissolving or suspending the active ingredient in the liquid carrier whereby the final dosage unit contains from 0.005 to 10% by weight of the active ingredient.
- Other additives include preservatives, isotonizers, solubilizers, stabilizers, and pain-soothing agents.
- injectable suspensions may also be prepared, in which case appropriate liquid carriers, suspending agents and the like may be employed.
- Compounds of the invention may be administered intranasally using a suitable intranasal vehicle.
- the compounds of this invention may be administered directly to the lungs by inhalation.
- Compounds of the invention may also be administered topically or enhanced by using a suitable topical transdermal vehicle or a transdermal patch.
- the composition is preferably in the form of an ophthalmic composition.
- the ophthalmic compositions are preferably formulated as eye-drop formulations and filled in appropriate containers to facilitate administration to the eye, for example a dropper fitted with a suitable pipette.
- the compositions are sterile and aqueous based, using purified water.
- an ophthalmic composition may contain one or more of: a) a surfactant such as a polyoxyethylene fatty acid ester; b) a thickening agents such as cellulose, cellulose derivatives, carboxyvinyl polymers, polyvinyl polymers, and polyvinylpyrrolidones, typically at a concentration in the range of about 0.05 to about 5.0% (wt/vol); c) (as an alternative to or in addition to storing the composition in a container containing nitrogen and optionally including a free oxygen absorber such as Fe), an anti-oxidant such as butylated hydroxyanisol, ascorbic acid, sodium thiosulfate, or butylated hydroxytoluene at a concentration of about 0.00005 to about 0.1% (wt/vol); d) ethanol at a concentration of about 0.01 to 0.5% (wt/vol); and e) other excipients such as an isotonic agent, buffer, preservative
- the composition of this invention includes one or more additional agents.
- the other therapeutic agent may be ay agent that is capable of treating, preventing or reducing the symptoms of a tetracycline-responsive disease or disorder.
- the other therapeutic agent may be any agent of benefit to a patient when administered in combination with the tetracycline compound in this invention.
- Oxalyl chloride (0.95 mL, 11.10 mmol, 5.5 eq) was added to CH 2 Cl 2 solution (15 mL, anhydrous) of S1-2 (510 mg, 2.00 mmol).
- DMF 0.1 mL was added to the resulting mixture.
- the reaction was stirred at 25° C. for 1 h and concentrated.
- the resulting solid was re-dissolved in 15 mL of anhydrous CH 2 Cl 2 .
- Phenol (520 mg, 5.50 mmol, 2.8 eq), DMAP (670 mg, 5.6 mmol, 2.8 eq), and triethylamine (1.90 mL, 13.90 mmol, 7.0 eq) were added to the reaction mixture.
- BBr 3 (1.85 mL, 1 M, 1.85 mmol, 1.2 eq) was added to a CH 2 Cl 2 solution (8 mL) of S1-3 (400 mg, 1.54 mmol) at ⁇ 78° C. The reaction was stirred from ⁇ 78° C. to 25° C. for 1.5 h, quenched with saturated NaHCO 3 and concentrated. EtOAc and H 2 O were added to the reaction mixture. The aqueous layer was extracted with EtOAc.
- LDA solution was prepared by adding n-BuLi (1.6 M, 5.1 mL, 8.16 mmol, 1.5 eq) to diisopropylamine (1.15 mL, 8.16 mmol) in THF (15 mL) at ⁇ 78° C. The reaction mixture was warmed up to ⁇ 20° C. and stirred for 15 min. After LDA solution was cooled to ⁇ 78° C., compound S1-6 (2.26 g, 5.44 mmol) in THF (5 mL) was added dropwise, forming an orange-red solution. After 10 min, DMF (1.26 mL, 16.3 mmol, 3 eq) was added dropwise. The reaction solution was allowed to warm up to ⁇ 20° C.
- i-Propyl magnesium chloride/lithium chloride solution (Chemetall Foote Corporation, 1.2 M solution in THF, 4.4 mL, 5.3 mmol) was added to a ⁇ 78° C. solution of compound S1-8 (472 mg, 1.06 mmol) in THF (10 mL). The reaction mixture was allowed to warm to 0° C. over 1 hour. Paraformaldehyde (318 mg, 10.6 mmol) was added, and the reaction was allowed to warm to rt. After 1 hour, the reaction mixture was heated to 40° C. After 1 hour, the reaction mixture was quenched with ammonium chloride (saturated, aqueous solution) and was extracted with EtOAc (2 ⁇ ).
- Methanesulfonyl chloride (0.0446 mL, 0.575 mmol) was added dropwise to a solution of compound S1-9 (76.0 mg, 0.192 mmol) and triethylamine (0.107 mL, 0.768 mmol) in dichloromethane (2 mL). After 1 hour, the reaction mixture was diluted with EtOAc and was washed with water (2 ⁇ ) and brine (1 ⁇ ). The organics were dried over Na 2 SO 4 , filtered, and were concentrated under reduced pressure.
- the material was dissolved in DMF (2 mL), diisopropylethylamine (0.100 mL, 0.575 mmol) and neopentylamine (16.7 mg, 0.192 mmol) were added, and the reaction mixture was heated to 60° C. After heating overnight, the reaction mixture was purified by column chromatography (Biotage 5 g column, 0 to 8% EtOAc in hexane gradient), yielding 26.5 mg (31%) of the product S2-1-1 as a white solid.
- the initial diazonium salt mixture was added to the CuCN and NaCN solution along with toluene (180 mL) with vigorous stirring.
- the reaction mixture was stirred at 0° C. for 1 h, rt for 2 h, and 50° C. for 1 h. After cooling to rt, the layers were separated. The aqueous layer was further extracted with toluene. The combined organic layers were washed with brine, dried over MgSO 4 , and concentrated. The residue was passed through a silica gel plug, washed with toluene, and concentrated to give 14.5 g of compound S3-3 as a light yellow solid.
- Triethylamine (12.3 mL, 88.1 mmol, 2.5 eq), phenol (3.98 g, 42.3 mmol, 1.2 eq) and DMAP (0.43 g, 3.52 mmol, 0.1 eq) were added. The mixture was stirred at rt for 1 h at which point LC-MS showed all SM was consumed. The solvent was evaporated. The residue was suspended in EtOAc, and the precipitate was filtered off. The organic solution was then washed with 1 N HCl (three times), H 2 O, sat. aq. NaHCO 3 , and brine, dried over Na 2 SO 4 , filtered and concentrated.
- reaction mixture was quenched with Na 2 S 2 O 3 (5% aqueous solution) and was diluted with EtOAc. The layers were separated, and the EtOAc layer was washed with water (3 ⁇ ) and brine (1 ⁇ ). The organics were dried over Na 2 SO 4 , filtered, and concentrated under reduced pressure. The material was dissolved in acetone (30 mL), and K 2 CO 3 (1.34 g, 9.68 mmol) and benzyl bromide (0.633 mL, 5.32 mmol) were added. The reaction mixture was heated to 50° C. overnight. Upon cooling to rt, the reaction mixture was diluted with EtOAc and was washed with water (3 ⁇ ) and brine (1 ⁇ ).
- i-Propyl magnesium chloride/lithium chloride solution (Chemetall Foote Corporation, 1.2 M solution in THF, 4.4 mL, 5.3 mmol) was added to a ⁇ 78° C. solution of compound S3-10 (490 mg, 1.06 mmol) in THF (10 mL). The reaction mixture was allowed to warm to 0° C. over 1 hour. Paraformaldehyde (318 mg, 10.6 mmol) was added, and the reaction was heated to 40° C. After 1 hour, the reaction mixture was quenched with ammonium chloride (saturated, aqueous solution) and was extracted with EtOAc (3 ⁇ ).
- BBr 3 (4.9 g, 1.9 mL, 19.5 mmol, 1.5 eq) was added to a CH 2 Cl 2 solution (30 mL) of S4-3 (3.5 g, 13.0 mmol, 1.0 eq) at ⁇ 78° C. The reaction was stirred from ⁇ 78° C. to 25° C. for 1.5 h, quenched with saturated NaHCO 3 and the reaction mixture was extracted with EtOAc. The combined EtOAc extracts were dried (Na 2 SO 4 ) and concentrated to yield 3.3 g of the crude phenol intermediate.
- Paraformaldehyde (1.27 g, 43.1 mmol, 10 eq) was added as a solid at 0° C., the reaction flask was fitted with a reflux condenser, and the vessel was heated to 40° C. in an oil bath for 2 h. After cooling, the resulting slurry was poured into saturated aqueous NH 4 Cl solution (40 mL) and water (15 mL), and extracted with EtOAc (2 ⁇ 90 mL). The combined organic layers were washed with brine (30 mL), dried (Na 2 SO 4 ), filtered, and concentrated under reduced pressure.
- BBr 3 (1.0 M solution in CH 2 Cl 2 , 28.0 mL, 28.0 mmol) was added to a solution of compound S3-5 (8.98 g, 28.0 mmol) in CH 2 Cl 2 (100 mL) at ⁇ 78° C. The resulting reaction mixture was stirred at ⁇ 78° C. for 20 min and at 0° C. for 15 min. NaHCO 3 (saturated, aqueous solution, 120 mL) was added slowly. The resulting mixture was stirred at rt for 20 min, and the CH 2 Cl 2 was evaporated. The residue was extracted with ethyl acetate (250 mL), and the combined extracts were dried over MgSO 4 , filtered, and concentrated under reduced pressure.
- the reaction vessel was evacuated and back-filled with hydrogen gas three times, and the solution stirred at ambient temperature under a hydrogen balloon. After 18 h, the reaction mixture was filtered through Celite and concentrated under reduced pressure. This crude oil was dissolved in dimethylformamide (2 mL), and diisopropylethylamine (241 ⁇ L, 1.38 mmol, 4 eq), di-tert-butylcarbonate (226 mg, 1.04 mmol, 3 eq) and a catalytic amount of dimethylaminopyridine were added. The reaction mixture was placed under nitrogen and stirred at ambient temperature.
- reaction solution was diluted with saturated aqueous sodium bicarbonate (10 mL) and water (30 mL) and extracted with EtOAc (2 ⁇ 30 mL). The combined organic extracts were washed with brine, dried (Na 2 SO 4 ), filtered, and concentrated under reduced pressure.
- Lithium diisopropylamide was prepared at ⁇ 40° C. from n-butyllithium (2.5 M solution in hexane, 0.118 mL, 0.294 mmol) and diisopropylamine (0.0416 mL, 0.294 mmol) in THF (5 mL).
- the reaction mixture was cooled to ⁇ 78° C. and TMEDA (0.114 mL, 0.762 mmol) was added followed by the dropwise addition of a solution of compound S1-11-1 (66.5 mg, 0.153 mmol) in THF (2 mL). This resulted in an orange-red colored solution.
- the material was purified on a Waters Autopurification system equipped with a Sunfire Prep C18 OBD column [5 ⁇ m, 19 ⁇ 50 mm; flow rate, 20 mL/min; Solvent A: H 2 O with 0.1% HCO 2 H; Solvent B: CH 3 CN with 0.1% HCO 2 H; gradient: 20 ⁇ 100% B; mass-directed fraction collection], yielding 17.2 mg (17%) of the desired product S7-2-1 as a yellow solid.
- Aqueous HF (0.4 mL, 48%) was added to a solution of S7-2-1 (17.2 mg, 0.0209 mmol) in 1,4-dioxane (0.8 mL) in a plastic vial. After 4 h, the reaction mixture was poured into a solution of K 2 HPO 4 (4.8 g) in water (15 mL). The mixture was extracted with EtOAc (3 ⁇ ). The combined EtOAc extracts were dried over Na 2 SO 4 , filtered and concentrated under reduced pressure.
- the material was dissolved in Methanol (1 mL), 1,4-dioxane (1 mL) and 0.5 M HCl in Methanol (0.5 mL), and palladium on carbon (Degussa, 10 wt %, ⁇ 5 mg) was added. An atmosphere of hydrogen was introduced, and the reaction mixture was stirred for 2 h. The reaction mixture was filtered through Celite, and the filtrate was concentrated under reduced pressure.
- the material was purified on a Waters Autopurification system equipped with a Phenomenex Polymerx 10 ⁇ RP 100A column [10 ⁇ m, 30 ⁇ 21.20 mm; flow rate, 20 mL/min; Solvent A: 0.05N HCl in water; Solvent B: CH 3 CN; gradient: 0 ⁇ 70% B; mass-directed fraction collection]. Fractions with the desired MW were collected and freeze-dried to yield 8.7 mg (69%, 2 steps) of the desired product Compound 102 as a yellow solid.
- a flame-dried vial was charged with N,N-dimethylbarbituric acid (103 mg, 0.66 mmol, 2.6 eq) and tetrakis(triphenylphosphine)palladium(0) (20.1 mg, 0.017 mmol, 0.07 eq).
- the vial was evacuated and back-filled with nitrogen three times.
- a solution of S8-1 (205 mg, 0.254 mmol, 1 eq) in dichloromethane (degassed, 4 mL) under nitrogen was transferred via syringe to the prepared vial.
- the resulting heterogeneous solution was placed in a 35° C. heating block. After 1 h, the reaction mixture was concentrated under reduced pressure.
- Preparative reverse phase HPLC of the resulting oil was performed on a Waters Autopurification system using a Polymerx 10 ⁇ RP- ⁇ 100 R column [30 ⁇ 21.20 mm, 10 micron, solvent A: 0.05 N HCl in water, solvent B: CH 3 CN; injection volume: 2.4 mL (0.05 N HCl in water); gradient: 10-60% B over 15 min; mass-directed fraction collection].
- the reaction mixture was filtered through Celite, and the filtrate was concentrated under reduced pressure.
- the material was purified on a Waters Autopurification system equipped with a Phenomenex Polymerx 10 ⁇ RP 100A column [10 ⁇ m, 30 ⁇ 21.20 mm; flow rate, 20 mL/min; Solvent A: 0.05N HCl in water; Solvent B: Methanol; gradient: 20 ⁇ 100% B; mass-directed fraction collection]. Fractions with the desired MW were collected and freeze-dried to yield 1.2 mg (16%, 2 steps) of the desired product Compound 109 as a yellow solid.
- i-Propyl magnesium chloride/lithium chloride solution (Chemetall Foote Corporation, 1.2 M solution in THF, 8.5 mL, 10.2 mmol) was added to a ⁇ 50° C. solution of compound S10-1 (956 mg, 2.03 mmol) in THF (20 mL). The reaction mixture was allowed to warm to 0° C. over 1 h. N,N-Dimethylformamide (1.25 mL, 16.2 mmol) was added, and the reaction was allowed to warm to rt. After 1 hour, the reaction mixture was quenched with ammonium chloride (saturated, aqueous solution) and was extracted with EtOAc (2 ⁇ ).
- Neopentylamine (0.077 mL, 0.66 mmol) was added to a solution of compound S10-2 (55.5 mg, 0.132 mmol) in CH 2 Cl 2 (5 mL) and Acetic acid (0.038 mL, 0.66 mmol). After 5 min, sodium triacetoxyborohydride (83.9 mg, 0.396 mmol) was added. After 1 hour, the reaction mixture was diluted with EtOAc and was washed with NaHCO 3 (saturated, aqueous solution, 2 ⁇ ). The organics were dried over Na 2 SO 4 , filtered, and concentrated under reduced pressure, yielding 53.3 mg (88% crude) of compound S10-3-1.
- Lithium diisopropylamide was prepared at ⁇ 40° C. from n-butyllithium (2.5 M solution in hexane, 0.045 mL, 0.11 mmol) and diisopropylamine (0.016 mL, 0.11 mmol) in THF (2 mL). The reaction mixture was cooled to ⁇ 78° C. and TMEDA (0.040 mL, 0.27 mmol) was added followed by the dropwise addition of a solution of compound S10-3-1 (24.9 mg, 0.0539 mmol) in THF (1 mL).
- the material was purified on a Waters Autopurification system equipped with a Sunfire Prep C18 OBD column [5 ⁇ m, 19 ⁇ 50 mm; flow rate, 20 mL/min; Solvent A: H 2 O with 0.1% HCO 2 H; Solvent B: CH 3 CN with 0.1% HCO 2 H; gradient: 50 ⁇ 100% B; mass-directed fraction collection], yielding 18.9 mg (49%) of the desired product S10-4-1 as a yellow solid.
- Aqueous HF (0.4 mL, 48%) was added to a solution of S10-4-1 (18.9 mg, 0.022 mmol) in 1,4-dioxane (1 mL) in a plastic vial. After stirring overnight, the reaction mixture was poured into a solution of K 2 HPO 4 (4.8 g) in water (15 mL). The mixture was extracted with EtOAc (3 ⁇ ). The combined EtOAc extracts were dried over Na 2 SO 4 , filtered and concentrated under reduced pressure.
- the material was dissolved in Methanol (2 mL), 1,4-dioxane (2 mL) and 0.5M HCl in Methanol (0.5 mL), and palladium on carbon (Degussa, 10 wt %, ⁇ 5 mg) was added. An atmosphere of hydrogen was introduced, and the reaction mixture was stirred for 2 h. The reaction mixture was filtered through Celite, and the filtrate was concentrated under reduced pressure.
- the material was purified on a Waters Autopurification system equipped with a Phenomenex Polymerx 10 ⁇ RP 100A column [10 ⁇ m, 30 ⁇ 21.20 mm; flow rate, 20 mL/min; Solvent A: 0.05N HCl in water; Solvent B: CH 3 CN; gradient: 0 ⁇ 70% B; mass-directed fraction collection]. Fractions with the desired MW were collected and freeze-dried to yield 7.8 mg (57%, 2 steps) of the desired product Compound 201 as a yellow solid.
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Abstract
The present invention is directed to a compound represented by Structural Formula (I):
or a pharmaceutically acceptable salt thereof. The variables for Structural Formula (I) are defined herein. Also described is a pharmaceutical composition comprising the compound of Structural Formula (I) and its therapeutic use.
Description
- This application is a continuation of U.S. application Ser. No. 13/075,886, filed on Mar. 30, 2011, which claims the benefit of U.S. Provisional Application No. 61/319,614, filed on Mar. 31, 2010. The entire teachings of the above application are incorporated herein by reference.
- The tetracyclines are broad spectrum anti-microbial agents that are widely used in human and veterinary medicine. The total production of tetracyclines by fermentation or semi-synthesis is measured in the thousands of metric tons per year.
- The widespread use of tetracyclines for therapeutic purposes has led to the emergence of resistance to these antibiotics, even among highly susceptible bacterial species. Therefore, there is need for new tetracycline analogs with improved antibacterial activities and efficacies against other tetracycline responsive diseases or disorders.
- A first embodiment of the present invention is directed to a compound represented by Structural Formula (I):
- or a pharmaceutically acceptable salt thereof, wherein:
-
- X is selected from halo, —R, —OR, —SR, —S(O)mR, —N(R)2, —N(R)C(O)R, N(R)C(O)OR′, and N(R)S(O)mR′, wherein:
- each R is independently selected from H, (C1-C6)alkyl, carbocyclyl, or heterocyclyl, or
- two R groups taken together with the atom or atoms to which they are bound form a 4-7 membered non-aromatic heterocyclyl; and
- R′ is (C1-C6)alkyl, carbocyclyl, or heterocyclyl;
- ring A is a 5-7 membered non-aromatic heterocyclic ring optionally containing 1-2 heteroatoms independently selected from N, S and O in addition to the indicated nitrogen atom, wherein:
- R1 is selected from hydrogen, —(C1-C8)alkyl, —(C0-C6)alkylene-carbocyclyl, —(C0-C6)alkylene-heterocyclyl, —(C1-C6)alkylene-O—(C1-C6)alkyl, —(C2-C6)alkylene-O-carbocyclyl, —(C2-C6)alkylene-O-heterocyclyl, —S(O)m—(C1-C6)alkyl, —S(O)m-carbocyclyl, —S(O)m-heterocyclyl, —(C2-C4)alkylene-S(O)m-carbocyclyl, —(C2-C4)alkylene-S(O)m-heterocyclyl, —C(O)—[C(R4)(R4)]0-4—N(R2)(R3), —C(O)—(C1-C6)alkyl, —C(O)-heterocyclyl, —C(O)-carbocyclyl, —S(O)m—[C(R4)(R4)]0-4—N(R2)(R3), and —S(O)m—(C1-C4)alkylene-carbocyclyl, —S(O)m—(C1-C4)alkylene-heterocyclyl, or
- R1 taken together with a ring atom adjacent to the nitrogen atom to which R1 is bound forms a saturated heterocyclic ring fused to ring A;
- each of R2 and R3 is independently selected from hydrogen, (C1-C8)alkyl, —(C0-C6)alkylene-carbocyclyl, —(C0-C6)alkylene-heterocyclyl, —(C2-C6)alkylene-O-carbocyclyl, —(C2-C6)alkylene-O-heterocyclyl, —S(O)m—(C1-C6)alkyl, —S(O)m-carbocyclyl, —S(O)m-heterocyclyl, —(C2-C4)alkylene-S(O)m-carbocyclyl, and —(C2-C4)alkylene-S(O)m-heterocyclyl; or
- R2 and R3, taken together with the nitrogen atom to which they are bound form a heterocyclyl, wherein the heterocyclyl optionally comprises 1 to 4 additional heteroatoms independently selected from N, S and O;
- each R4 is independently selected from hydrogen, (C1-C6)alkyl, carbocyclyl, heterocyclyl or a naturally occurring amino acid side chain moiety, or
- two R4 taken together with a common carbon atom to which they are bound form a 3-7 membered non-aromatic carbocyclyl or a 4-7 membered non-aromatic heterocyclyl, wherein the heterocyclyl formed by two R4 comprises one to three heteroatoms independently selected from N, S and O;
- any substitutable carbon atom on ring A is optionally:
- (i) substituted with one to two substituents independently selected from —(C1-C4)alkyl, and —(C0-C4)alkylene-carbocyclyl; or
- (ii) substituted with ═O;
- (iii) taken together with an adjacent ring atom to form a 3-7 membered saturated carbocyclyl or a 4-7 membered saturated heterocyclyl ring; or
- (iv) spyrofused to a 3-7 membered saturated carbocyclyl;
- any additional N heteroatom on ring A is substituted with hydrogen, C1-C6 alkyl, carbocyclyl, or heterocyclyl;
- each alkyl or alkylene in Structural Formula I is optionally and independently substituted with one or more substituents independently selected from halo, —OH, ═O, —O—(C1-C4)alkyl, fluoro-substituted-(C1-C4)alkyl, —S(O)m—(C1-C4)alkyl and —N(R5)(R5);
- each carbocyclyl or heterocyclyl portion of a substituent of ring A or the saturated heterocyclic ring fused to ring A is optionally and independently substituted with one or more substituents independently selected from halo, —(C1-C4)alkyl, —OH, ═O, —O—(C1-C4)alkyl, —(C1-C4)alkylene-O—(C1-C4)alkyl, halo-substituted-(C1-C4)alkyl, halo-substituted-O—(C1-C4)alkyl, —C(O)—(C1-C4)alkyl, —C(O)-(fluoro-substituted-(C1-C4)alkyl), —S(O)m—(C1-C4)alkyl, —N(R5)(R5) and CN;
- each R5 is independently selected from hydrogen and (C1-C4)alkyl, wherein each alkyl in the group represented by R5 is optionally and independently substituted with one or more substituents independently selected from —(C1-C4)alkyl, (C3-C6)cycloalkyl, halo, —OH, —O—(C1-C4)alkyl, and —(C1-C4)alkylene-O—(C1-C4)alkyl; and
- each m is independently 1 or 2,
with the proviso that when X is hydrogen, ring A is not an unsubstituted bivalent piperidine radical.
- In one aspect of the first embodiment,
-
- X is selected from halo, —R′, —OR, —SR, —S(O)mR, —N(R)2, —N(R)C(O)R, N(R)C(O)OR′, and N(R)S(O)mR′; and
- R′ is (C1-C6)alkyl, carbocyclyl, or heterocyclyl, wherein the values for the remaining variables are as defined in the first embodiment.
- Another embodiment of the present invention is directed to a pharmaceutical composition comprising a pharmaceutically acceptable carrier or diluent and a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. The pharmaceutical composition is used in therapy, such as treating an infection (e.g., a bacterial infection) in a subject.
- Another embodiment of the present invention is a method of treating an infection (e.g., a bacterial infection) in a subject comprising administering to the subject an effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.
- Another embodiment of the present invention is a method of preventing an infection (e.g., a bacterial infection) in a subject comprising administering to the subject an effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.
- Another embodiment of the present invention is the use of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof for the manufacture of a medicament for treating an infection (e.g., a bacterial infection) in a subject.
- Another embodiment of the present invention is the use of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof for the manufacture of a medicament for preventing an infection (e.g., a bacterial infection) in a subject.
- Another embodiment of the present invention is the use of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof in therapy, such as treating or preventing an infection (e.g., a bacterial infection) in a subject.
- The foregoing will be apparent from the following more particular description of example embodiments of the invention, as illustrated in the accompanying drawings in which like reference characters refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating embodiments of the present invention.
-
FIG. 1 is a bar graph that demonstrates the efficacy ofCompounds -
FIG. 2 is a bar graph demonstrating theCompound 102 in the immunocompetent mouse lung infection model with S. pneumoniae SP514, oral dosing. -
FIG. 3 is a bar graph demonstrating efficacy ofCompounds Compounds -
FIG. 4 is a bar graph demonstrating the efficacy ofCompound 102 in a Rat lung infection model with H. influenzae HI551. - The present invention is directed to a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. Values and alternative values for the variables in Structural Formula I and for each of the embodiments described herein are provided in the following paragraphs. It is understood that the invention encompasses all combinations of the substituent variables (i.e., R1, R2, R3, etc.) defined herein.
- X is selected from halo, —R, —OR, —SR, —S(O)mR, —N(R)2, —N(R)C(O)R, —N(R)C(O)OR′, and —N(R)S(O)mR′, wherein each R is independently selected from H, (C1-C6)alkyl, carbocyclyl, or heterocyclyl; or two R groups taken together with the atom or atoms to which they are bound form a 4-7 membered non-aromatic heterocyclyl; and R′ is (C1-C6)alkyl, carbocyclyl, or heterocyclyl.
- Alternatively, X is selected from halo, —R′, —OR, —SR, —S(O)mR, —N(R)2, —N(R)C(O)R, —N(R)C(O)OR′, and —N(R)S(O)mR′, wherein each R is independently selected from H, (C1-C6)alkyl, carbocyclyl, or heterocyclyl, or two R groups taken together with the atom or atoms to which they are bound form a 4-7 membered non-aromatic heterocyclyl; and R′ is (C1-C6)alkyl, carbocyclyl, or heterocyclyl.
- Further, X is selected from fluoro, chloro, hydrogen, methoxy, methyl, trifluoromethyl, trifluoromethoxy and dimethylamino. Alternatively, X is selected from fluoro, chloro, methoxy, methyl, trifluoromethyl, trifluoromethoxy and dimethylamino.
- X is selected from fluoro, chloro, methoxy, trifluoromethyl, and dimethylamino. Alternatively, X is methoxy or dimethylamino. Specifically, X is fluoro.
- Ring A is a 5-7 membered non-aromatic heterocyclic ring optionally containing 1-2 heteroatoms independently selected from N, S and O in addition to the indicated nitrogen atom.
- Ring A is selected from
- Specifically, ring A is
- Alternatively, ring A is
- Alternatively, ring A is
- R1 is selected from hydrogen, —(C1-C8)alkyl, —(C0-C6) alkylene-carbocyclyl, —(C0-C6)alkylene-heterocyclyl, —(C1-C6)alkylene-O—(C1-C6)alkyl, —(C2-C6)alkylene-O-carbocyclyl, —(C2-C6)alkylene-O-heterocyclyl, —S(O)m—(C1-C6)alkyl, —S(O)m-carbocyclyl, —S(O)m-heterocyclyl, —(C2-C4)alkylene-S(O)m-carbocyclyl, —(C2-C4)alkylene-S(O)m-heterocyclyl, —C(O)—[C(R4)(R4)]0-4—N(R2)(R3), —C(O)—(C1-C6)alkyl, —C(O)-heterocyclyl, —C(O)-carbocyclyl, —S(O)m—[C(R4)(R4)]0-4—N(R2)(R3), and —S(O)m—(C1-C4)alkylene-carbocyclyl, —S(O)m—(C1-C4)alkylene-heterocyclyl, or R1 taken together with a ring atom adjacent to the nitrogen atom to which R1 is bound forms a saturated heterocyclic ring fused to ring A.
- Alternatively, R1 is selected from hydrogen, —(C1-C8)alkyl, —(C2-C4)alkylene-O—(C1-C4)alkyl, —(C0-C3)alkylene-(saturated heterocycle), —(C0-C3)alkylene-(C3-C7)cycloalkyl, —C(O)—(C1-C3)alkylene-N(R2)(R3), or R1 taken together with a ring atom adjacent to the nitrogen atom to which R1 is bound forms a saturated heterocyclic ring fused to ring A; wherein any alkyl or alkylene portion of R1 or the saturated heterocyclic ring fused to ring A is optionally substituted with fluoro or hydroxy.
- Further, R1 is selected from hydrogen; (C1-C3)straight alkyl optionally substituted with one or more of: 1 to 5 methyl groups, a single hydroxy group, a single methoxy group, 1 to 3 fluoro groups, a single saturated heterocycle, and a single (C3-C7)cycloalkyl group; (C3-C7)cycloalkyl; tetrahydrofuranyl; and —C(O)—CH2—N(R2)(R3); or R1 taken together with a ring atom adjacent to the nitrogen atom to which R1 is bound forms a pyrrolidinyl or piperidinyl ring fused to ring A, wherein the pyrrolidinyl or piperidinyl ring fused to ring A is optionally substituted with hydroxy or fluorine.
- Alternatively, R1 is selected from ethyl, propyl, (C3-C5)branched alkyl, (C3-C5)cycloalkyl, (C1-C3)alkylene-cyclopropyl, —C(O)CH2NH-cyclopentyl, and —C(O)CH2-pyrrolidin-1-yl, wherein R1 is optionally substituted with fluoro. Alternatively, R1 is selected from 3-fluoroethyl, propyl, isopropyl, sec-butyl, tert-butyl, (C3-C5)cycloalkyl, —C(CH3)2-cyclopropyl, —C(O)CH2NH-cyclopentyl, and —C(O)CH2-(3-fluoropyrrolidin-1-yl). Alternatively, R1 is further selected from tert-pentyl. In another alternative, R1 is selected from hydrogen and (C1-C4)alkyl. Alternatively, R1 is selected from hydrogen, methyl, isobutyl, and tert-butyl.
- Each of R2 and R3 is independently selected from hydrogen, (C1-C8)alkyl, —(C0-C6) alkylene-carbocyclyl, —(C0-C6)alkylene-heterocyclyl, —(C2-C6)alkylene-O-carbocyclyl, —(C2-C6)alkylene-O-heterocyclyl, —S(O)m—(C1-C6)alkyl, —S(O)m-carbocyclyl, —S(O)m-heterocyclyl, —(C2-C4)alkylene-S(O)m-carbocyclyl, and —(C2-C4)alkylene-S(O)m-heterocyclyl; or
- R2 and R3, taken together with the nitrogen atom to which they are bound form a heterocyclyl, wherein the heterocyclyl optionally comprises 1 to 4 additional heteroatoms independently selected from N, S and O.
- Alternatively, R2 is selected from hydrogen and (C1-C3)alkyl and R3 is selected from (C1-C3)alkyl and (C3-C7)cycloalkyl, or R2 and R3, taken together with the nitrogen atom to which they are bound form a 4-7 membered saturated heterocyclyl, wherein the heterocyclyl is optionally substituted with fluoro.
- In another alternative, R2 and R3 are simultaneously methyl; R2 is hydrogen and R3 is C3-C7 cycloalkyl; or R2 and R3, taken together with the nitrogen atom to which they are bound form a pyrrolidinyl ring optionally substituted with fluoro.
- Each R4 is independently selected from hydrogen, (C1-C6)alkyl, carbocyclyl, heterocyclyl or a naturally occurring amino acid side chain moiety.
- Alternatively, two R4 taken together with a common carbon atom to which they are bound form a 3-7 membered non-aromatic carbocyclyl or a 4-7 membered non-aromatic heterocyclyl, wherein the heterocyclyl formed by two R4 comprises one to three heteroatoms independently selected from N, S and O.
- Any substitutable carbon atom on ring A is optionally:
-
- (i) substituted with one to two substituents independently selected from —(C1-C4)alkyl, and —(C0-C4)alkylene-carbocyclyl; or
- (ii) substituted with ═O;
- (iii) taken together with an adjacent ring atom to form a 3-7 membered saturated carbocyclyl or a 4-7 membered saturated heterocyclyl ring; or
- (iv) spyrofused to a 3-7 membered saturated carbocyclyl.
- Any additional N heteroatom on ring A is substituted with hydrogen, (C1-C6)alkyl, carbocyclyl, or heterocyclyl.
- Each alkyl or alkylene in Structural Formula I is optionally and independently substituted with one or more substituents independently selected from halo, —OH, ═O, —O—(C1-C4)alkyl, fluoro-substituted-(C1-C4)alkyl, —S(O)m—(C1-C4)alkyl and —N(R5)(R5).
- Each carbocyclyl or heterocyclyl portion of a substituent of ring A or the saturated heterocyclic ring fused to ring A is optionally and independently substituted with one or more substituents independently selected from halo, —(C1-C4)alkyl, —OH, ═O, —O—(C1-C4)alkyl, —(C1-C4)alkylene-O—(C1-C4)alkyl, halo-substituted-(C1-C4)alkyl, halo-substituted-O—(C1-C4)alkyl, —C(O)—(C1-C4)alkyl, —C(O)-(fluoro-substituted-(C1-C4)alkyl), —S(O)m—(C1-C4)alkyl, —N(R5)(R5) and CN.
- Each R5 is independently selected from hydrogen and (C1-C4)alkyl, wherein each alkyl in the group represented by R5 is optionally and independently substituted with one or more substituents independently selected from —(C1-C4)alkyl, (C3-C6)cycloalkyl, halo, —OH, —O—(C1-C4)alkyl, and —(C1-C4)alkylene-O—(C1-C4)alkyl.
- In one alternative, when X is hydrogen, ring A is not an unsubstituted bivalent piperidine radical.
- Each m is independently 1 or 2.
- R6a is selected from hydrogen and methyl.
- R6 is selected from hydrogen, (C1-C4)alkyl optionally substituted with hydroxy or phenyl; or R6 taken together with R1 and the nitrogen atom and the carbon atom to which they are respectively bound form a pyrrolidinyl or piperidinyl ring fused to ring A, wherein the pyrrolidinyl or piperidinyl ring is optionally substituted with —OH or —F; or R6 and R6a are taken together with the carbon atom to which they are both bound to form a cyclopropyl ring.
- Alternatively, R6 is selected from hydrogen, (R)-(C1-C4)alkyl, or —CH2-phenyl, or R1 and R6 taken together with the nitrogen atom and the carbon atom to which they are respectively bound form a pyrrolidinyl ring fused to ring A. Further, R6 is selected from hydrogen, (R)-methyl, (R)-isobutyl, (R)-sec-butyl, (R)-isopropyl, and —CH2-phenyl. Further, at least one of R1 and R6 is other than hydrogen.
- R7a and R7b are each hydrogen. Alternatively, R7a and R7b are taken together to form ═O.
- A first embodiment of the present invention is directed to a compound represented by Structural Formula (I):
- or a pharmaceutically acceptable salt thereof, wherein:
-
- X is selected from halo, —R, —OR, —SR, —S(O)mR, —N(R)2, —N(R)C(O)R, N(R)C(O)OR′, and N(R)S(O)mR′, wherein:
- each R is independently selected from H, (C1-C6)alkyl, carbocyclyl, or heterocyclyl, or
- two R groups taken together with the atom or atoms to which they are bound form a 4-7 membered non-aromatic heterocyclyl; and
- R′ is (C1-C6)alkyl, carbocyclyl, or heterocyclyl;
- ring A is a 5-7 membered non-aromatic heterocyclic ring optionally containing 1-2 heteroatoms independently selected from N, S and O in addition to the indicated nitrogen atom, wherein:
- R1 is selected from hydrogen, —(C1-C8)alkyl, —(C0-C6)alkylene-carbocyclyl, —(C0-C6)alkylene-heterocyclyl, —(C1-C6)alkylene-O—(C1-C6)alkyl, —(C2-C6)alkylene-O-carbocyclyl, —(C2-C6)alkylene-O-heterocyclyl, —S(O)m—(C1-C6)alkyl, —S(O)m-carbocyclyl, —S(O)m-heterocyclyl, —(C2-C4)alkylene-S(O)m-carbocyclyl, —(C2-C4)alkylene-S(O)m-heterocyclyl, —C(O)—[C(R4)(R4)]0-4—N(R2)(R3), —C(O)—(C1-C6)alkyl, —C(O)-heterocyclyl, —C(O)-carbocyclyl, —S(O)m—[C(R4)(R4)]0-4—N(R2)(R3), and —S(O)m—(C1-C4)alkylene-carbocyclyl, —S(O)m—(C1-C4)alkylene-heterocyclyl, or
- R1 taken together with a ring atom adjacent to the nitrogen atom to which R1 is bound forms a saturated heterocyclic ring fused to ring A;
- each of R2 and R3 is independently selected from hydrogen, (C1-C8)alkyl, —(C0-C6) alkylene-carbocyclyl, —(C0-C6)alkylene-heterocyclyl, —(C2-C6)alkylene-O-carbocyclyl, —(C2-C6)alkylene-O-heterocyclyl, —S(O)m—(C1-C6)alkyl, —S(O)m-carbocyclyl, —S(O)m-heterocyclyl, —(C2-C4)alkylene-S(O)m-carbocyclyl, and —(C2-C4)alkylene-S(O)m-heterocyclyl; or
- R2 and R3, taken together with the nitrogen atom to which they are bound form a heterocyclyl, wherein the heterocyclyl optionally comprises 1 to 4 additional heteroatoms independently selected from N, S and O;
- each R4 is independently selected from hydrogen, (C1-C6)alkyl, carbocyclyl, heterocyclyl or a naturally occurring amino acid side chain moiety, or
- two R4 taken together with a common carbon atom to which they are bound form a 3-7 membered non-aromatic carbocyclyl or a 4-7 membered non-aromatic heterocyclyl, wherein the heterocyclyl formed by two R4 comprises one to three heteroatoms independently selected from N, S and O;
- any substitutable carbon atom on ring A is optionally:
- (i) substituted with one to two substituents independently selected from —(C1-C4)alkyl, and —(C0-C4)alkylene-carbocyclyl; or
- (ii) substituted with ═O;
- (iii) taken together with an adjacent ring atom to form a 3-7 membered saturated carbocyclyl or a 4-7 membered saturated heterocyclyl ring; or
- (iv) spyrofused to a 3-7 membered saturated carbocyclyl;
- any additional N heteroatom on ring A is substituted with hydrogen, C1-C6 alkyl, carbocyclyl, or heterocyclyl;
- each alkyl or alkylene in Structural Formula I is optionally and independently substituted with one or more substituents independently selected from halo, —OH, ═O, —O—(C1-C4)alkyl, fluoro-substituted-(C1-C4)alkyl, —S(O)m—(C1-C4)alkyl and —N(R5)(R5);
- each carbocyclyl or heterocyclyl portion of a substituent of ring A or the saturated heterocyclic ring fused to ring A is optionally and independently substituted with one or more substituents independently selected from halo, —(C1-C4)alkyl, —OH, ═O, —O—(C1-C4)alkyl, —(C1-C4)alkylene-O—(C1-C4)alkyl, halo-substituted-(C1-C4)alkyl, halo-substituted-O—(C1-C4)alkyl, —C(O)—(C1-C4)alkyl, —C(O)-(fluoro-substituted-(C1-C4)alkyl), —S(O)m—(C1-C4)alkyl, —N(R5)(R5) and CN;
- each R5 is independently selected from hydrogen and (C1-C4)alkyl, wherein each alkyl in the group represented by R5 is optionally and independently substituted with one or more substituents independently selected from —(C1-C4)alkyl, (C3-C6)cycloalkyl, halo, —OH, —O—(C1-C4)alkyl, and —(C1-C4)alkylene-O—(C1-C4)alkyl; and
- each m is independently 1 or 2,
with the proviso that when X is hydrogen, ring A is not an unsubstituted bivalent piperidine radical.
- In one aspect of the first embodiment,
-
- X is selected from fluoro, chloro, hydrogen, methoxy, methyl, trifluoromethyl, trifluoromethoxy and dimethylamino, wherein the values for the remaining variables are as defined in the first embodiment or in the values or alternative values described above.
- In a second aspect of the first embodiment,
-
- X is selected from halo, —R′, —OR, —SR, —S(O)mR, —N(R)2, —N(R)C(O)R, N(R)C(O)OR′, and N(R)S(O)mR′; and
- R′ is (C1-C6)alkyl, carbocyclyl, or heterocyclyl, wherein the values for the remaining variables are as defined in the first embodiment or in the values or alternative values described above.
- In a third aspect of the first embodiment:
-
- X is selected from fluoro, chloro, methoxy, methyl, trifluoromethyl, trifluoromethoxy and dimethylamino; wherein the values for the remaining variables are as defined in the second aspect of the first embodiment or in the values or alternative values described above.
- In a fourth aspect of the first embodiment,
- R1 is selected from hydrogen, —(C1-C8)alkyl, —(C2-C4)alkylene-O—(C1-C4)alkyl, —(C0-C3)alkylene-(saturated heterocycle), —(C0-C3)alkylene-(C3-C7)cycloalkyl, —C(O)—(C1-C3)alkylene-N(R2)(R3), or
- R1 taken together with a ring atom adjacent to the nitrogen atom to which R1 is bound forms a saturated heterocyclic ring fused to ring A; wherein:
-
- any alkyl or alkylene portion of R1 or the saturated heterocyclic ring fused to ring A is optionally substituted with fluoro or hydroxy;
- R2 is selected from hydrogen and (C1-C3)alkyl;
- R3 is selected from (C1-C3)alkyl and (C3-C7)cycloalkyl, or
- R2 and R3, taken together with the nitrogen atom to which they are bound form a 4-7 membered saturated heterocyclyl, wherein the heterocyclyl is optionally substituted with fluoro, wherein the values for the remaining variables are as defined in the first embodiment or in the values or alternative values described above.
- In a fifth aspect of the first embodiment, wherein: R1 is selected from hydrogen; (C1-C3)straight alkyl optionally substituted with one or more of: 1 to 5 methyl groups, a single hydroxy group, a single methoxy group, 1 to 3 fluoro groups, a single saturated heterocycle, and a single (C3-C7)cycloalkyl group; (C3-C7)cycloalkyl; tetrahydrofuranyl; and —C(O)—CH2—N(R2)(R3), wherein R2 and R3 are simultaneously methyl; R2 is hydrogen and R3 is C3-C7 cycloalkyl; or R2 and R3, taken together with the nitrogen atom to which they are bound form a pyrrolidinyl ring optionally substituted with fluoro, or
- R1 taken together with a ring atom adjacent to the nitrogen atom to which R1 is bound forms a pyrrolidinyl or piperidinyl ring fused to ring A, wherein the pyrrolidinyl or piperidinyl ring fused to ring A is optionally substituted with hydroxy or fluorine wherein the values for the remaining variables are as defined in the first embodiment or in the values or alternative values described above.
- In a second embodiment, the compound of the present invention is represented by Structural Formula (I), or a pharmaceutically acceptable salt thereof, wherein:
- ring A is selected from
- R6a is selected from hydrogen and methyl; and
- R6 is selected from hydrogen, (C1-C4)alkyl optionally substituted with hydroxy or phenyl; or
- R6 taken together with R1 and the nitrogen atom and the carbon atom to which they are respectively bound form a pyrrolidinyl or piperidinyl ring fused to ring A, wherein the pyrrolidinyl or piperidinyl ring is optionally substituted with —OH or —F; or
- R6 and R6a are taken together with the carbon atom to which they are both bound to form a cyclopropyl ring; and
- R7a and R7b are each hydrogen or are taken together to form ═O; wherein the values for the remaining variables are as defined in the first embodiment or aspects thereof or in the values or alternative values described above.
- For example, the compounds of the second embodiment are represented by Structural Formula (II), (IIIa), (IVa), (Va) or (VIa):
- or pharmaceutically acceptable salt thereof, wherein the values for the remaining variables are as defined in the first embodiment or aspects thereof, the second embodiment, or in the values or alternative values described above.
- In a third embodiment, the compound of the present invention is represented by Structural Formula (I), or a pharmaceutically acceptable salt thereof, wherein:
- ring A is
- X is selected from fluoro, chloro, methoxy, trifluoromethyl, and dimethylamino; and
- R1 is selected from ethyl, propyl, (C3-C5)branched alkyl, (C3-C5)cycloalkyl, (C1-C3)alkylene-cyclopropyl, —C(O)CH2NH-cyclopentyl, and —C(O)CH2-pyrrolidin-1-yl, wherein R1 is optionally substituted with fluoro, wherein the values for the remaining variables are as defined in the first or second embodiments or aspects thereof or in the values or alternative values described above.
- In a specific aspect of the third embodiment, X is selected from fluoro, chloro, methoxy, trifluoromethyl, and dimethylamino; and
- R1 is selected from 3-fluoroethyl, propyl, isopropyl, sec-butyl, tert-butyl, (C3-C5)cycloalkyl, —C(CH3)2-cyclopropyl, —C(O)CH2NH-cyclopentyl, —C(O)CH2-(3-fluoropyrrolidin-1-yl); and when X is methoxy or dimethylamino, R1 is further selected from tert-pentyl, wherein the values for the remaining variables are as defined in the first or second embodiments or aspects thereof or in the values or alternative values described above.
- In a fourth embodiment, the compound of the present invention is represented by Structural Formula (I), or a pharmaceutically acceptable salt thereof, wherein:
- ring A is
- X is fluoro; and
- R1 is selected from hydrogen, (C1-C4)alkyl, wherein the values for the remaining variables are as defined in the first or second embodiments or aspects thereof or in the values or alternative values described above.
- In a specific aspect of the fourth embodiment, R1 is selected from isopropyl, propyl or ethyl, wherein the values for the remaining variables are as defined in the first or second embodiments or aspects thereof or in the values or alternative values described above.
- In a fifth embodiment, the compound of the present invention is represented by Structural Formula (I), or a pharmaceutically acceptable salt thereof, wherein:
- ring A is
- X is fluoro;
- R1 is selected from hydrogen, (C1-C4)alkyl;
- R6 is selected from hydrogen, (R)-(C1-C4)alkyl, or —CH2-phenyl, or
- R1 and R6 taken together with the nitrogen atom and the carbon atom to which they are respectively bound form a pyrrolidinyl ring fused to ring A;
- R7a and R7b are each hydrogen or are taken together to form ═O, wherein at least one of R1, and R6 is other than hydrogen, wherein the values for the remaining variables are as defined in the first or second embodiments or aspects thereof or in the values or alternative values described above.
- In a specific aspect of the fifth embodiment, R1 is selected from hydrogen, methyl, isobutyl, and tert-butyl; and
- R6 is selected from hydrogen, (R)-methyl, (R)-isobutyl, (R)-sec-butyl, (R)-isopropyl, and —CH2-phenyl. “(R)” signifies the chirality at the carbon atom to which R6 is attached. Specific structures are as follows:
- Alternatively, R1 and R6 taken together with the nitrogen atom and the carbon atom to which they are respectively bound form a pyrrolidinyl ring fused to ring A. The values for the remaining variables are as defined in the first or second embodiments or aspects thereof or in the values or alternative values described above.
- Exemplary compounds represented by Structural Formula (II) are shown in Tables 1-4 below:
-
TABLE 1 (II) Compound X R1 100 F 101 F 102 F 103 N(CH3)2 104 F 105 F 106 F 107 F 108 F 109 H 110 Cl 111 F 112 CF3 113 CF3 114 F 115 N(CH3)2 116 CF3 117 Cl 118 F 119 OCH3 120 F 121 F 122 F 123 F 124 N(CH3)2 125 OCH3 126 CF3 127 N(CH3)2 128 CF3 129 F 130 F 131 F 132 F 133 F 134 F 135 N(CH3)2 136 F 137 F 138 OCH3 139 F 140 F 141 CF3 142 F 143 F 144 Cl 145 OCH3 146 F 147 F 148 OCH3 149 Cl 150 Cl - In a sixth embodiment, the compound of the invention is represented by any one of the structural formulas described in Tables 1, 2, 3 or 4, or a pharmaceutically acceptable salt thereof.
- In a seventh embodiment, the compound of the invention is a compound selected from any one of
Compounds - In an eighth embodiment, the compound of the invention is a compound selected from any one of Compounds 300, 304, and 307 or a pharmaceutically acceptable salt thereof.
- In a ninth embodiment, the compound of the invention is a compound selected from any one of Compounds 400, 404, 405, 406, 407, 408, 409, 410, 412, 413, 416, 417, 419, 421, 422, 423, 424, 427, 428, and 429 or a pharmaceutically acceptable salt thereof.
- “Alkyl” means an optionally substituted saturated aliphatic branched or straight-chain monovalent hydrocarbon radical having the specified number of carbon atoms. Thus, “(C1-C6) alkyl” means a radical having from 1-6 carbon atoms in a linear or branched arrangement. “(C1-C6)alkyl” includes methyl, ethyl, propyl, butyl, pentyl and hexyl.
- “Alkylene” means an optionally substituted saturated aliphatic branched or straight-chain divalent hydrocarbon radical having the specified number of carbon atoms. Thus, “(C1-C6)alkylene” means a divalent saturated aliphatic radical having from 1-6 carbon atoms in a linear arrangement, e.g., —[(CH2)n]—, where n is an integer from 1 to 6, “(C1-C6)alkylene” includes methylene, ethylene, propylene, butylene, pentylene and hexylene. Alternatively, “(C1-C6)alkylene” means a divalent saturated radical having from 1-6 carbon atoms in a branched arrangement, for example: —[(CH2CH2CH2CH2CH(CH3)]—, —[(CH2CH2CH2CH2C(CH3)2]—, —[(CH2C(CH3)2CH(CH3))]—, and the like. A specific branched C3-alkylene is
- and a specific C4-alkylene is
- Each alkyl or alkylene in Structural Formula I is optionally and independently substituted with one or more substituents independently selected from halo, —OH, ═O, —O—(C1-C4)alkyl, fluoro-substituted-(C1-C4)alkyl, —S(O)m—(C1-C4)alkyl and —N(R5)(R5).
- “Aryl” or “aromatic” means an aromatic monocyclic or polycyclic (e.g. bicyclic or tricyclic) carbocyclic ring system. In one embodiment, “aryl” is a 6-12 membered monocylic or bicyclic system. Aryl systems include, but not limited to, phenyl, naphthalenyl, fluorenyl, indenyl, azulenyl, and anthracenyl.
- “Carbocyclyl” means a cyclic group with only ring carbon atoms. “Carbocyclyl” includes 3-12 membered saturated or unsaturated aliphatic cyclic hydrocarbon rings or 6-12 membered aryl rings. A carbocyclyl moiety can be monocyclic, fused bicyclic, bridged bicyclic, spiro bicyclic, or polycyclic.
- Monocyclic carbocyclyls are saturated or unsaturated aliphatic cyclic hydrocarbon rings or aromatic hydrocarbon rings having the specified number of carbon atoms. Monocyclic carbocyclyls include cycloalkyl, cycloalkenyl, cycloalkynyl and phenyl.
- A fused bicyclic carbocyclyl has two rings which have two adjacent ring atoms in common. The first ring is a monocyclic carbocyclyl and the second ring is a monocyclic carbocyclyl or a monocyclic heterocyclyl.
- A bridged bicyclic carbocyclyl has two rings which have three or more adjacent ring atoms in common. The first ring is a monocyclic carbocyclyl and the second ring is a monocyclic carbocyclyl or a monocyclic heterocyclyl.
- A spiro bicyclic carbocyclyl has two rings which have only one ring atom in common. The first ring is a monocyclic carbocyclyl and the second ring is a monocyclic carbocyclyl or a monocyclic heterocyclyl.
- Polycyclic carbocyclyls have more than two rings (e.g., three rings resulting in a tricyclic ring system) and adjacent rings have at least one ring atom in common. The first ring is a monocyclic carbocyclyl and the remainder of the ring structures are monocyclic carbocyclyls or monocyclic heterocyclyls. Polycyclic ring systems include fused, bridged and spiro ring systems. A fused polycyclic ring system has at least two rings that have two adjacent ring atoms in common. A spiro polycyclic ring system has at least two rings that have only one ring atom in common. A bridged polycyclic ring system has at least two rings that have three or more adjacent ring atoms in common.
- “Cycloalkyl” means a saturated aliphatic cyclic hydrocarbon ring. Thus, “C3-C7 cycloalkyl” means a hydrocarbon radical of a (3-7 membered) saturated aliphatic cyclic hydrocarbon ring. A C3-C7 cycloalkyl includes, but is not limited to cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl.
- “Cycloalkene” means an aliphatic cyclic hydrocarbon ring having one or more double bonds in the ring.
- “Cycloalkyne” means an aliphatic cyclic hydrocarbon ring having one or more triple bonds in the ring.
- “Hetero” refers to the replacement of at least one carbon atom member in a ring system with at least one heteroatom selected from N, S, and O. “Hetero” also refers to the replacement of at least one carbon atom member in a acyclic system. A hetero ring system or a hetero acyclic system may have 1, 2, 3 or 4 carbon atom members replaced by a heteroatom.
- “Heterocyclyl” means a cyclic 4-12 membered saturated or unsaturated aliphatic or aromatic ring containing 1, 2, 3, 4 or 5 heteroatoms independently selected from N, O or S. When one heteroatom is S, it can be optionally mono- or di-oxygenated (i.e. —S(O)— or —S(O)2—). The heterocyclyl can be monocyclic, fused bicyclic, bridged bicyclic, spiro bicyclic or polycyclic.
- “Saturated heterocyclyl” means an aliphatic heterocyclyl group without any degree of unsaturation (i.e., no double bond or triple bond). It can be monocyclic, fused bicyclic, bridged bicyclic, spiro bicyclic or polycyclic.
- Examples of monocyclic saturated heterocyclyls include, but are not limited to, azetidine, pyrrolidine, piperidine, piperazine, azepane, hexahydropyrimidine, tetrahydrofuran, tetrahydropyran, morpholine, thiomorpholine, thiomorpholine 1,1-dioxide, tetrahydro-2H-1,2-thiazine, tetrahydro-2H-1,2-thiazine 1,1-dioxide, isothiazolidine, isothiazolidine 1,1-dioxide.
- A fused bicyclic heterocyclyl has two rings which have two adjacent ring atoms in common. The first ring is a monocyclic heterocyclyl and the second ring is a monocyclic carbocycle (such as a cycloalkyl or phenyl) or a monocyclic heterocyclyl. For example, the second ring is a (C3-C6)cycloalkyl, such as cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl. Alternatively, the second ring is phenyl. Examples of fused bicyclic heterocyclyls include, but are not limited to, octahydrocyclopenta[c]pyrrolyl, indoline, isoindoline, 2,3-dihydro-1H-benzo[d]imidazole, 2,3-dihydrobenzo[d]oxazole, 2,3-dihydrobenzo[d]thiazole, octahydrobenzo[d]oxazole, octahydro-1H-benzo[d]imidazole, octahydrobenzo[d]thiazole, octahydrocyclopenta[c]pyrrole, 3-azabicyclo[3.1.0]hexane, and 3-azabicyclo[3.2.0]heptane.
- A spiro bicyclic heterocyclyl has two rings which have only one ring atom in common. The first ring is a monocyclic heterocyclyl and the second ring is a monocyclic carbocycle (such as a cycloalkyl or phenyl) or a monocyclic heterocyclyl. For example, the second ring is a (C3-C6)cycloalkyl. Alternatively, the second ring is phenyl. Example of spiro bicyclic heterocyclyl includes, but are not limited to, azaspiro[4.4]nonane, 7-azaspiro[4.4]nonane, azasprio[4.5]decane, 8-azaspiro[4.5]decane, azaspiro[5.5]undecane, 3-azaspiro[5.5]undecane and 3,9-diazaspiro[5.5]undecane.
- A bridged bicyclic heterocyclyl has two rings which have three or more adjacent ring atoms in common. The first ring is a monocyclic heterocyclyl and the other ring is a monocyclic carbocycle (such as a cycloalkyl or phenyl) or a monocyclic heterocyclyl. Examples of bridged bicyclic heterocyclyls include, but are not limited to, azabicyclo[3.3.1]nonane, 3-azabicyclo[3.3.1]nonane, azabicyclo[3.2.1]octane, 3-azabicyclo[3.2.1]octane, 6-azabicyclo[3.2.1]octane and azabicyclo[2.2.2]octane, 2-azabicyclo[2.2.2]octane.
- Polycyclic heterocyclyls have more than two rings, one of which is a heterocyclyl (e.g., three rings resulting in a tricyclic ring system) and adjacent rings having at least one ring atom in common. Polycyclic ring systems include fused, bridged and spiro ring systems. A fused polycyclic ring system has at least two rings that have two adjacent ring atoms in common. A spiro polycyclic ring system has at least two rings that have only one ring atom in common. A bridged polycyclic ring system has at least two rings that have three or more adjacent ring atoms in common.
- “Heteroaryl” or “heteroaromatic ring” means a 5-12 membered monovalent heteroaromatic monocyclic or bicylic ring radical. A herteroaryl contains 1, 2, 3 or 4 heteroatoms independently selected from N, O, and S. Heteroaryls include, but are not limited to furan, oxazole, thiophene, 1,2,3-triazole, 1,2,4-triazine, 1,2,4-triazole, 1,2,5-thiadiazole 1,1-dioxide, 1,2,5-thiadiazole 1-oxide, 1,2,5-thiadiazole, 1,3,4-oxadiazole, 1,3,4-thiadiazole, 1,3,5-triazine, imidazole, isothiazole, isoxazole, pyrazole, pyridazine, pyridine, pyridine-N-oxide, pyrazine, pyrimidine, pyrrole, tetrazole, and thiazole. Bicyclic heteroaryl rings include, but are not limited to, bicyclo[4.4.0] and bicyclo[4.3.0] fused ring systems such as indolizine, indole, isoindole, indazole, benzimidazole, benzthiazole, purine, quinoline, isoquinoline, cinnoline, phthalazine, quinazoline, quinoxaline, 1,8-naphthyridine, and pteridine.
- In a particular embodiment, each carbocyclyl or heterocyclyl portion of a substituent of ring A or the saturated heterocyclic ring fused to ring A is optionally and independently substituted. Exemplary substituents include halo, —(C1-C4)alkyl, —OH, ═O, —O—(C1-C4)alkyl, —(C1-C4)alkylene-O—(C1-C4)alkyl, halo-substituted-(C1-C4)alkyl, halo-substituted-O—(C1-C4)alkyl, and —C(O)—(C1-C4)alkyl.
- “Halogen” used herein refers to fluorine, chlorine, bromine, or iodine.
- “Alkoxy” means an alkyl radical attached through an oxygen linking atom. “(C1-C6)-alkoxy” includes methoxy, ethoxy, propoxy, butoxy, pentoxy and hexoxy.
- Haloalkyl and halocycloalkyl include mono, poly, and perhaloalkyl groups where each halogen is independently selected from fluorine, chlorine, and bromine.
- “Halogen” and “halo” are interchangeably used herein and each refers to fluorine, chlorine, bromine, or iodine.
- “Fluoro” means —F.
- As used herein, fluoro-substituted-(C1-C4)alkyl means a (C1-C4)alkyl substituted with one or more —F groups. Examples of fluoro-substituted-(C1-C4)alkyl include, but are not limited to, —CF3, —CH2CF3, —CH2CF2H, —CH2CH2F and —CH2CH2CF3.
- “Naturally occurring amino acid side chain moiety” refers to any amino acid side chain moiety present in a natural amino acid.
- Another embodiment of the present invention is a pharmaceutical composition comprising one or more pharmaceutically acceptable carrier and/or diluent and a compound disclosed herein or a pharmaceutically acceptable salt thereof.
- “Pharmaceutically acceptable carrier” and “pharmaceutically acceptable diluent” means non-therapeutic components that are of sufficient purity and quality for use in the formulation of a composition of the invention that, when appropriately administered to an animal or human, typically do not produce an adverse reaction, and that are used as a vehicle for a drug substance (i.e. a compound of the present invention).
- Pharmaceutically acceptable salts of the compounds of the present invention are also included. For example, an acid salt of a compound of the present invention containing an amine or other basic group can be obtained by reacting the compound with a suitable organic or inorganic acid, resulting in pharmaceutically acceptable anionic salt forms. Examples of anionic salts include the acetate, benzenesulfonate, benzoate, bicarbonate, bitartrate, bromide, calcium edetate, camsylate, carbonate, chloride, citrate, dihydrochloride, edetate, edisylate, estolate, esylate, fumarate, glyceptate, gluconate, glutamate, glycollylarsanilate, hexylresorcinate, hydrobromide, hydrochloride, hydroxynaphthoate, iodide, isethionate, lactate, lactobionate, malate, maleate, mandelate, mesylate, methylsulfate, mucate, napsylate, nitrate, pamoate, pantothenate, phosphate/diphosphate, polygalacturonate, salicylate, stearate, subacetate, succinate, sulfate, tannate, tartrate, teoclate, tosylate, and triethiodide salts.
- Salts of the compounds of the present invention containing a carboxylic acid or other acidic functional group can be prepared by reacting with a suitable base. Such a pharmaceutically acceptable salt may be made with a base which affords a pharmaceutically acceptable cation, which includes alkali metal salts (especially sodium and potassium), alkaline earth metal salts (especially calcium and magnesium), aluminum salts and ammonium salts, as well as salts made from physiologically acceptable organic bases such as trimethylamine, triethylamine, morpholine, pyridine, piperidine, picoline, dicyclohexylamine, N,N′-dibenzylethylenediamine, 2-hydroxyethylamine, bis-(2-hydroxyethyl)amine, tri-(2-hydroxyethyl)amine, procaine, dibenzylpiperidine, dehydroabietylamine, N,N′-bisdehydroabietylamine, glucamine, N-methylglucamine, collidine, quinine, quinoline, and basic amino acids such as lysine and arginine.
- The invention also includes various isomers and mixtures thereof. Certain of the compounds of the present invention may exist in various stereoisomeric forms. Stereoisomers are compounds which differ only in their spatial arrangement. Enantiomers are pairs of stereoisomers whose mirror images are not superimposable, most commonly because they contain an asymmetrically substituted carbon atom that acts as a chiral center. “Enantiomer” means one of a pair of molecules that are mirror images of each other and are not superimposable. Diastereomers are stereoisomers that are not related as mirror images, most commonly because they contain two or more asymmetrically substituted carbon atoms. “R” and “S” represent the configuration of substituents around one or more chiral carbon atoms. When a chiral center is not defined as R or S, either a pure enantiomer or a mixture of both configurations is present.
- “Racemate” or “racemic mixture” means a compound of equimolar quantities of two enantiomers, wherein such mixtures exhibit no optical activity; i.e., they do not rotate the plane of polarized light.
- The compounds of the invention may be prepared as individual isomers by either isomer-specific synthesis or resolved from an isomeric mixture. Conventional resolution techniques include forming the salt of a free base of each isomer of an isomeric pair using an optically active acid (followed by fractional crystallization and regeneration of the free base), forming the salt of the acid form of each isomer of an isomeric pair using an optically active amine (followed by fractional crystallization and regeneration of the free acid), forming an ester or amide of each of the isomers of an isomeric pair using an optically pure acid, amine or alcohol (followed by chromatographic separation and removal of the chiral auxiliary), or resolving an isomeric mixture of either a starting material or a final product using various well known chromatographic methods.
- When the stereochemistry of a disclosed compound is named or depicted by structure, the named or depicted stereoisomer is at least 60%, 70%, 80%, 90%, 99% or 99.9% by weight pure relative to the other stereoisomers. When a single enantiomer is named or depicted by structure, the depicted or named enantiomer is at least 60%, 70%, 80%, 90%, 99% or 99.9% by weight optically pure. Percent optical purity by weight is the ratio of the weight of the enantiomer that is present divided by the combined weight of the enantiomer that is present and the weight of its optical isomer.
- The present invention also provides a method of treating or preventing a subject with a tetracycline-responsive disease or disorder comprising administering to the subject an effective amount of a compound of the present invention or a pharmaceutically acceptable salt thereof.
- “Tetracycline-responsive disease or disorder” refers to a disease or disorder that can be treated, prevented, or otherwise ameliorated by the administration of a tetracycline compound of the present invention. Tetracycline-responsive disease or disorder includes infections, cancer, inflammatory disorders, autoimmune disease, arteriosclerosis, corneal ulceration, emphysema, arthritis, osteoporosis, osteoarthritis, multiple sclerosis, osteosarcoma, osteomyelitis, bronchiectasis, chronic pulmonary obstructive disease, skin and eye diseases, periodontitis, osteoporosis, rheumatoid arthritis, ulcerative colitis, prostatitis, tumor growth and invasion, metastasis, diabetes, diabetic proteinuria, panbronchiolitis, aortic or vascular aneurysms, skin tissue wounds, dry eye, bone, cartilage degradation, malaria, senescence, diabetes, vascular stroke, neurodegenerative disorders, cardiac disease, juvenile diabetes, acute and chronic bronchitis, sinusitis, and respiratory infections, including the common cold, Wegener's granulomatosis; neutrophilic dermatoses and other inflammatory diseases such as dermatitis herpetiformis, leukocytoclastic vasculitis, bullous lupus erythematosus, pustular psoriasis, erythema elevatum diutinum; vitiligo, discoid lupus erythematosus; pyoderma gangrenosum, pustular psoriasis, blepharitis, or meibomianitis, Alzheimer's disease, degenerative maculopathy; acute and chronic gastroenteritis and colitis; acute and chronic cystitis and urethritis; acute and chronic dermatitis; acute and chronic conjunctivitis, acute and chronic serositis, uremic pericarditis; acute and chronic cholecystis, cystic fibrosis, acute and chronic vaginitis, acute and chronic uveitis, drug reactions, insect bites, burns and sunburn, bone mass disorder, acute lung injury, chronic lung disorders, ischemia, stroke or ischemic stroke, skin wound, aortic or vascular aneurysm, diabetic retinopathy, hemorrhagic stroke, angiogenesis, and other states for which tetracycline compounds have been found to be active (see, for example, U.S. Pat. Nos. 5,789,395; 5,834,450; 6,277,061 and 5,532,227, each of which is expressly incorporated herein by reference).
- In addition, a method to treat any disease or disease state that could benefit from modulating the expression and/or function of nitric oxide, metalloproteases, proinflammatory mediators and cytokines, reactive oxygen species, components of the immune response, including chemotaxis, lymphocyte transformation, delayed hypersensitivity, antibody production, phagocytosis, and oxidative metabolism of phagocytes. A method to treat any disease or disease state that could benefit from modulating the expression and/or function of C-reactive protein, signaling pathways (e.g., FAK signaling pathway), and/or augment the expression of COX-2 and PGE2 production is covered. A method to treat any disease or disease state that could benefit from inhibition of neovascularization is covered.
- Compounds of the invention can be used to prevent or treat important mammalian and veterinary diseases such as diarrhea, urinary tract infections, infections of skin and skin structure including wounds, cellulitis, and abscesses, ear, nose and throat infections, mastitis and the like. In addition, methods for treating neoplasms using tetracycline compounds of the invention are also included (van der Bozert et al., Cancer Res., 48: 6686-6690 (1988)).
- Infections that can be treated using compounds of the invention or a pharmaceutically acceptable salt thereof include, but are not limited to, skin infections, GI infections, urinary tract infections, genito-urinary infections, respiratory tract infections, sinuses infections, middle ear infections, systemic infections, intra-abdominal infections, pyelonephritis, pneumonia, bacterial vaginosis, streptococcal sore throat, chronic bacterial prostatitis, gynecological and pelvic infections, sexually transmitted bacterial diseases, ocular and otic infections, cholera, influenza, bronchitis, acne, psoriasis, rosacea, impetigo, malaria, sexually transmitted disease including syphilis and gonorrhea, Legionnaires' disease, Lyme disease, Rocky Mountain spotted fever, Q fever, typhus, bubonic plague, gas gangrene, hospital acquired infections, leptospirosis, whooping cough, anthrax and infections caused by the agents responsible for lymphogranuloma venereum, inclusion conjunctivitis, or psittacosis. Infections can be bacterial, fungal, parasitic and viral infections (including those which are resistant to other tetracycline compounds).
- In one embodiment, the infection is a respiratory infection. In a particular aspect, the respiratory infection is Community-Acquired Bacterial Pneumonia (CABP). In a more particular embodiment, the respiratory infection, for example, CABP is caused by a bacterium selected from S. aureus, S. pneumoniae, S. pyogenes, H. influenza, M. catarrhalis and Legionella pneumophila.
- In another embodiment, the infection is a skin infection. In a particular aspect the skin infection is an acute bacterial skin and skin structure infection (ABSSSI). In a more particular embodiment, the skin infection, for example ABSSSI is caused by a bacterium selected from S. aureus, CoNS, S. pyogenes, S. agalactiae, E. faecalis and E. faecium.
- In one embodiment, the infection can be caused by a bacterium (e.g. an anaerobic or aerobic bacterium).
- In another embodiment, the infection is caused by a Gram-positive bacterium. In a specific aspect of this embodiment, the infection is caused by a Gram-positive bacterium selected from class Bacilli, including, but not limited to, Staphylococcus spp., Streptococcus spp., Enterococcus spp., Bacillus spp., Listeria spp.; phylum Actinobacteria, including, but not limited to, Propionibacterium spp., Corynebacterium spp., Nocardia spp., Actinobacteria spp., and class Clostridia, including, but not limited to, Clostridium spp.
- In another embodiment, the infection is caused by a Gram-positive bacterium selected from S. aureus, CoNS, S. pneumoniae, S. pyogenes, S. agalactiae, E. faecalis and E. faecium.
- In another embodiment, the infection is caused by a Gram-negative bacterium. In one aspect of this embodiment, the infection is caused by a phylum Proteobacteria (e.g., Betaproteobacteria and Gammaproteobacteria), including Escherichia coli, Salmonella, Shigella, other Enterobacteriaceae, Pseudomonas, Moraxella, Helicobacter, Stenotrophomonas, Bdellovibrio, acetic acid bacteria, Legionella or alpha-proteobacteria such as Wolbachia. In another aspect, the infection is caused by a Gram-negative bacterium selected from cyanobacteria, spirochaetes, green sulfur or green non-sulfur bacteria. In a specific aspect of this embodiment, the infection is caused by a Gram-negative bacteria selected from Enterobactericeae (e.g., E. coli, Klebsiella pneumoniae including those containing extended-spectrum β-lactamases and/or carbapenemases), Bacteroidetes (e.g., Bacteroides fragilis), Vibrionaceae (Vibrio cholerae), Pasteurellaceae (e.g., Haemophilus influenzae), Pseudomonadaceae (e.g., Pseudomonas aeruginosa), Neisseriaceae (e.g. Neisseria meningitidis), Rickettsiae, Moraxellaceae (e.g., Moraxella catarrhalis), any species of Proteeae, Acinetobacter spp., Helicobacter spp., and Campylobacter spp. In a particular embodiment, the infection is caused by Gram-negative bacterium selected from the group consisting of Enterobactericeae (e.g., E. coli, Klebsiella pneumoniae), Pseudomonas, and Acinetobacter spp. In another embodiment, the infection is caused by an organism selected from the group consisting of K. pneumoniae, Salmonella, E. hirae, A. baumanii, M. catarrhais, H. influenzae, P. aeruginosa, E. faecium, E. coli, S. aureus, and E. faecalis.
- In another embodiment, the infection is cause by a gram negative bacterium selected from H. influenza, M. catarrhalis and Legionella pneumophila.
- In one embodiment, the infection is caused by an organism that grows intracellularly as part of its infection process.
- In another embodiment, the infection is caused by an organism selected from the group consisting of order Rickettsiales; phylum Chlamydiae; order Chlamydiales; Legionella spp.; class Mollicutes, including, but not limited to, Mycoplasma spp. (e.g. Mycoplasma pneumoniae); Mycobacterium spp. (e.g. Mycobacterium tuberculosis); and phylum Spriochaetales (e.g. Borrelia spp. and Treponema spp.).
- In another embodiment, the infection is caused by a Category A Biodefense organism as described at http://www.bt.cdc.gov/agent/agentlist-category.asp, the entire teachings of which are incorporated herein by reference. Examples of Category A organisms include, but are not limited to, Bacillus anthracis (anthrax), Yersinia pestis (plague), Clostridium botulinum (botulism) or Francisella tularensis (tularemia). In another embodiment the infection is a Bacillus anthracis infection. “Bacillus anthracis infection” includes any state, diseases, or disorders caused or which result from exposure or alleged exposure to Bacillus anthracis or another member of the Bacillus cereus group of bacteria.
- Additional infections that can be treated using compounds of the invention or a pharmaceutically acceptable salt thereof include, but are not limited to, anthrax, botulism, bubonic plague, and tularemia.
- In another embodiment, the infection is caused by a Category B Biodefense organism as described at http://www.bt.cdc.gov/agent/agentlist-category.asp, the entire teachings of which are incorporated herein by reference. Examples of Category B organisms include, but are not limited to, Brucella spp, Clostridium perfringens, Salmonella spp., Escherichia coli O157:H7, Shigella spp., Burkholderia mallei, Burkholderia pseudomallei, Chlamydia psittaci, Coxiella burnetii, Staphylococcal enterotoxin B, Rickettsia prowazekii, Vibrio cholerae, and Cryptosporidium parvum.
- Additional infections that can be treated using compounds of the invention or a pharmaceutically acceptable salt thereof include, but are not limited to, Brucellosis, Clostridium perfringens, food-borne illnesses, Glanders, Melioidosis, Psittacosis, Q fever, and water-borne illnesses.
- In yet another embodiment, the infection can be caused by one or more than one organism described above. Examples of such infections include, but are not limited to, intra-abdominal infections (often a mixture of a gram-negative species like E. coli and an anaerobe like B. fragilis), diabetic foot (various combinations of Streptococcus, Serratia, Staphylococcus and Enterococcus spp., anaerobes (S. E. Dowd, et al., PloS one 2008; 3:e3326, the entire teachings of which are incorporated herein by reference) and respiratory disease (especially in patients that have chronic infections like cystic fibrosis—e.g., S. aureus plus P. aeruginosa or H. influenzae, atypical pathogens), wounds and abscesses (various gram-negative and gram-positive bacteria, notably MSSA/MRSA, coagulase-negative staphylococci, enterococci, Acinetobacter, P. aeruginosa, E. coli, B. fragilis), and bloodstream infections (13% were polymicrobial (H. Wisplinghoff, et al., Clin. Infect. Dis. 2004; 39:311-317, the entire teachings of which are incorporated herein by reference)).
- In one embodiment, the infection is caused by an organism resistant to one or more antibiotics.
- In another embodiment, the infection is caused by an organism resistant to tetracycline or any member of first and second generation of tetracycline antibiotics (e.g., doxycycline or minocycline).
- In another embodiment, the infection is caused by an organism resistant to methicillin.
- In another embodiment, the infection is caused by an organism resistant to vancomycin.
- In another embodiment, the infection is caused by an organism resistant to a quinolone or fluoroquinolone.
- In another embodiment, the infection is caused by an organism resistant to tigecycline or any other tetracycline derivative. In a particular embodiment, the infection is caused by an organism resistant to tigecycline.
- In another embodiment, the infection is caused by an organism resistant to a β-lactam or cephalosporin antibiotic or an organism resistant to penems or carbapenems.
- In another embodiment, the infection is caused by an organism resistant to an antimicrobial peptide or a biosimilar therapeutic treatment. Antimicrobial peptides (also called host defense peptides) are an evolutionarily conserved component of the innate immune response and are found among all classes of life. In this case, antimicrobial peptide refers to any naturally occurring molecule or any semi/synthetic molecule that are analogs of anionic peptides, linear cationic α-helical peptides, cationic peptides enriched for specific amino acids (i.e. rich in proline, arginine, phenylalanine, glycine, tryptophan), and anionic and cationic peptides that contain cystein and form disulfide bonds.
- In another embodiment, the infection is caused by an organism resistant to macrolides, lincosamides, streptogramin antibiotics, oxazolidinones, and pleuromutilins.
- In another embodiment, the infection is caused by an organism resistant to PTK0796 (7-dimethylamino, 9-(2,2-dimethyl-propyl)-aminomethylcycline).
- In another embodiment, the infection is caused by a multidrug-resistant pathogen (having intermediate or full resistance to any two or more antibiotics).
- In a further embodiment, the tetracycline responsive disease or disorder is not a bacterial infection. In another embodiment, the tetracycline compounds of the invention are essentially non-antibacterial. For example, non-antibacterial compounds of the invention may have MIC values greater than about 4 μg/ml (as measured by assays known in the art and/or the assay given in Example 151. In another embodiment, the tetracycline compounds of the invention have both antibacterial and non-antibacterial effects.
- Tetracycline responsive disease or disorder also includes diseases or disorders associated with inflammatory process associated states (IPAS). The term “inflammatory process associated state” includes states in which inflammation or inflammatory factors (e.g., matrix metalloproteinases (MMPs), nitric oxide (NO), TNF, interleukins, plasma proteins, cellular defense systems, cytokines, lipid metabolites, proteases, toxic radicals, adhesion molecules, etc.) are involved or are present in an area in aberrant amounts, e.g., in amounts which may be advantageous to alter, e.g., to benefit the subject. The inflammatory process is the response of living tissue to damage. The cause of inflammation may be due to physical damage, chemical substances, micro-organisms, tissue necrosis, cancer or other agents. Acute inflammation is short-lasting, lasting only a few days. If it is longer lasting however, then it may be referred to as chronic inflammation.
- IPASs include inflammatory disorders. Inflammatory disorders are generally characterized by heat, redness, swelling, pain and loss of function. Examples of causes of inflammatory disorders include, but are not limited to, microbial infections (e.g., bacterial and fungal infections), physical agents (e.g., burns, radiation, and trauma), chemical agents (e.g., toxins and caustic substances), tissue necrosis and various types of immunologic reactions.
- Examples of inflammatory disorders can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include, but are not limited to, osteoarthritis, rheumatoid arthritis, acute and chronic infections (bacterial and fungal, including diphtheria and pertussis); acute and chronic bronchitis, sinusitis, and upper respiratory infections, including the common cold; acute and chronic gastroenteritis and colitis; inflammatory bowel disorder; acute and chronic cystitis and urethritis; vasculitis; sepsis; nephritis; pancreatitis; hepatitis; lupus; inflammatory skin disorders including, for example, eczema, dermatitis, psoriasis, pyoderma gangrenosum, acne rosacea, and acute and chronic dermatitis; acute and chronic conjunctivitis; acute and chronic serositis (pericarditis, peritonitis, synovitis, pleuritis and tendinitis); uremic pericarditis; acute and chronic cholecystis; acute and chronic vaginitis; acute and chronic uveitis; drug reactions; insect bites; burns (thermal, chemical, and electrical); and sunburn.
- IPASs also include matrix metalloproteinase associated states (MMPAS). MMPAS include states characterized by aberrant amounts of MMPs or MMP activity. Examples of matrix metalloproteinase associated states (“MMPAS's”) can be treated using compounds of the invention or a pharmaceutically acceptable salt thereof, include, but are not limited to, arteriosclerosis, corneal ulceration, emphysema, osteoarthritis, multiple sclerosis (Liedtke et al., Ann. Neurol. 1998, 44: 35-46; Chandler et al., J. Neuroimmunol. 1997, 72: 155-71), osteosarcoma, osteomyelitis, bronchiectasis, chronic pulmonary obstructive disease, skin and eye diseases, periodontitis, osteoporosis, rheumatoid arthritis, ulcerative colitis, inflammatory disorders, tumor growth and invasion (Stetler-Stevenson et al., Annu. Rev. Cell Biol. 1993, 9: 541-73; Tryggvason et al., Biochim. Biophys. Acta 1987, 907: 191-217; Li et al., Mol. Carcillog. 1998, 22: 84-89)), metastasis, acute lung injury, stroke, ischemia, diabetes, aortic or vascular aneurysms, skin tissue wounds, dry eye, bone and cartilage degradation (Greenwald et al., Bone 1998, 22: 33-38; Ryan et al., Curr. Op. Rheumatol. 1996, 8: 238-247). Other MMPAS include those described in U.S. Pat. Nos. 5,459,135; 5,321,017; 5,308,839; 5,258,371; 4,935,412; 4,704,383, 4,666,897, and RE 34,656, incorporated herein by reference in their entirety.
- In a further embodiment, the IPAS includes disorders described in U.S. Pat. Nos. 5,929,055; and 5,532,227, incorporated herein by reference in their entirety.
- Tetracycline responsive disease or disorder also includes diseases or disorders associated with NO associated states. The term “NO associated states” includes states which involve or are associated with nitric oxide (NO) or inducible nitric oxide synthase (iNOS). NO associated state includes states which are characterized by aberrant amounts of NO and/or iNOS. Preferably, the NO associated state can be treated by administering tetracycline compounds of the invention. The disorders, diseases and states described in U.S. Pat. Nos. 6,231,894; 6,015,804; 5,919,774; and 5,789,395 are also included as NO associated states. The entire contents of each of these patents are hereby incorporated herein by reference.
- Examples of diseases or disorders associated with NO associated states can be treated using the compounds of the present invention or a pharmaceutically acceptable salt thereof include, but are not limited to, malaria, senescence, diabetes, vascular stroke, neurodegenerative disorders (Alzheimer's disease and Huntington's disease), cardiac disease (reperfusion-associated injury following infarction), juvenile diabetes, inflammatory disorders, osteoarthritis, rheumatoid arthritis, acute, recurrent and chronic infections (bacterial, viral and fungal); acute and chronic bronchitis, sinusitis, and respiratory infections, including the common cold; acute and chronic gastroenteritis and colitis; acute and chronic cystitis and urethritis; acute and chronic dermatitis; acute and chronic conjunctivitis; acute and chronic serositis (pericarditis, peritonitis, synovitis, pleuritis and tendonitis); uremic pericarditis; acute and chronic cholecystis; cystic fibrosis, acute and chronic vaginitis; acute and chronic uveitis; drug reactions; insect bites; burns (thermal, chemical, and electrical); and sunburn.
- In another embodiment, the tetracycline responsive disease or disorder is cancer. Examples of cancers that can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include all solid tumors, i.e., carcinomas e.g., adenocarcinomas, and sarcomas. Adenocarcinomas are carcinomas derived from glandular tissue or in which the tumor cells form recognizable glandular structures. Sarcomas broadly include tumors whose cells are embedded in a fibrillar or homogeneous substance like embryonic connective tissue. Examples of carcinomas which may be treated using the methods of the invention include, but are not limited to, carcinomas of the prostate, breast, ovary, testis, lung, colon, and breast. The methods of the invention are not limited to the treatment of these tumor types, but extend to any solid tumor derived from any organ system. Examples of treatable cancers include, but are not limited to, colon cancer, bladder cancer, breast cancer, melanoma, ovarian carcinoma, prostate carcinoma, lung cancer, and a variety of other cancers as well. The methods of the invention also cause the inhibition of cancer growth in adenocarcinomas, such as, for example, those of the prostate, breast, kidney, ovary, testes, and colon. In one embodiment, the cancers treated by methods of the invention include those described in U.S. Pat. Nos. 6,100,248; 5,843,925; 5,837,696; or 5,668,122, incorporated herein by reference in their entirety.
- Alternatively, the tetracycline compounds may be useful for preventing or reducing the likelihood of cancer recurrence, for example, to treat residual cancer following surgical resection or radiation therapy. The tetracycline compounds useful according to the invention are especially advantageous as they are substantially non-toxic compared to other cancer treatments.
- In a further embodiment, the compounds of the invention are administered in combination with standard cancer therapy, such as, but not limited to, chemotherapy.
- Examples of tetracycline responsive states can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof also include neurological disorders which include both neuropsychiatric and neurodegenerative disorders, but are not limited to, such as Alzheimer's disease, dementias related to Alzheimer's disease (such as Pick's disease), Parkinson's and other Lewy diffuse body diseases, senile dementia, Huntington's disease, Gilles de la Tourette's syndrome, multiple sclerosis, amyotrophic lateral sclerosis (ALS), progressive supranuclear palsy, epilepsy, and Creutzfeldt-Jakob disease; autonomic function disorders such as hypertension and sleep disorders, and neuropsychiatric disorders, such as depression, schizophrenia, schizoaffective disorder, Korsakoff's psychosis, mania, anxiety disorders, or phobic disorders; learning or memory disorders, e.g., amnesia or age-related memory loss, attention deficit disorder, dysthymic disorder, major depressive disorder, mania, obsessive-compulsive disorder, psychoactive substance use disorders, anxiety, phobias, panic disorder, as well as bipolar affective disorder, e.g., severe bipolar affective (mood) disorder (BP-1), bipolar affective neurological disorders, e.g., migraine and obesity.
- Further neurological disorders include, for example, those listed in the American Psychiatric Association's Diagnostic and Statistical manual of Mental Disorders (DSM), the most current version of which is incorporated herein by reference in its entirety.
- In another embodiment, the tetracycline responsive disease or disorder is diabetes. Diabetes that can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include, but are not limited to, juvenile diabetes, diabetes mellitus, diabetes type I, or diabetes type II. In a further embodiment, protein glycosylation is not affected by the administration of the tetracycline compounds of the invention. In another embodiment, the tetracycline compound of the invention is administered in combination with standard diabetic therapies, such as, but not limited to insulin therapy.
- In another embodiment, the tetracycline responsive disease or disorder is a bone mass disorder. Bone mass disorders that can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include disorders where a subjects bones are disorders and states where the formation, repair or remodeling of bone is advantageous. For examples bone mass disorders include osteoporosis (e.g., a decrease in bone strength and density), bone fractures, bone formation associated with surgical procedures (e.g., facial reconstruction), osteogenesis imperfecta (brittle bone disease), hypophosphatasia, Paget's disease, fibrous dysplasia, osteopetrosis, myeloma bone disease, and the depletion of calcium in bone, such as that which is related to primary hyperparathyroidism. Bone mass disorders include all states in which the formation, repair or remodeling of bone is advantageous to the subject as well as all other disorders associated with the bones or skeletal system of a subject which can be treated with the tetracycline compounds of the invention. In a further embodiment, the bone mass disorders include those described in U.S. Pat. Nos. 5,459,135; 5,231,017; 5,998,390; 5,770,588; RE 34,656; 5,308,839; 4,925,833; 3,304,227; and 4,666,897, each of which is hereby incorporated herein by reference in its entirety.
- In another embodiment, the tetracycline responsive disease or disorder is acute lung injury. Acute lung injuries that can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include adult respiratory distress syndrome (ARDS), post-pump syndrome (PPS), and trauma. Trauma includes any injury to living tissue caused by an extrinsic agent or event. Examples of trauma include, but are not limited to, crush injuries, contact with a hard surface, or cutting or other damage to the lungs.
- The tetracycline responsive disease or disorders of the invention also include chronic lung disorders. Examples of chronic lung disorders that can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include, but are not limited, to asthma, cystic fibrosis, chronic obstructive pulmonary disease (COPD), and emphysema. In a further embodiment, the acute and/or chronic lung disorders that can be treated using the compounds of the invention or a pharmaceutically acceptable salt thereof include those described in U.S. Pat. Nos. 5,977,091; 6,043,231; 5,523,297; and 5,773,430, each of which is hereby incorporated herein by reference in its entirety.
- In yet another embodiment, the tetracycline responsive disease or disorder is ischemia, stroke, or ischemic stroke.
- In a further embodiment, the tetracycline compounds of the invention or a pharmaceutically acceptable salt thereof can be used to treat such disorders as described above and in U.S. Pat. Nos. 6,231,894; 5,773,430; 5,919,775 and 5,789,395, incorporated herein by reference.
- In still a further embodiment, the tetracycline compounds of the invention or a pharmaceutically acceptable salt thereof can be used to treat pain, for example, inflammatory, nociceptive or neuropathic pain. The pain can be either acute or chronic.
- In another embodiment, the tetracycline responsive disease or disorder is a skin wound. The invention also provides a method for improving the healing response of the epithelialized tissue (e.g., skin, mucosae) to acute traumatic injury (e.g., cut, burn, scrape, etc.). The method includes using a tetracycline compound of the invention or a pharmaceutically acceptable salt thereof to improve the capacity of the epithelialized tissue to heal acute wounds. The method may increase the rate of collagen accumulation of the healing tissue. The method may also decrease the proteolytic activity in the epithelialized tissue by decreasing the collagenolytic and/or gellatinolytic activity of MMPs. In a further embodiment, the tetracycline compound of the invention or a pharmaceutically acceptable salt thereof is administered to the surface of the skin (e.g., topically). In a further embodiment, the tetracycline compound of the invention or a pharmaceutically acceptable salt thereof is used to treat a skin wound, and other such disorders as described in, for example, U.S. Pat. Nos. 5,827,840; 4,704,383; 4,935,412; 5,258,371; 5,308,839, 5,459,135; 5,532,227; and 6,015,804; each of which is incorporated herein by reference in its entirety.
- In yet another embodiment, the tetracycline responsive disease or disorder is an aortic or vascular aneurysm in vascular tissue of a subject (e.g., a subject having or at risk of having an aortic or vascular aneurysm, etc.). The tetracycline compound or a pharmaceutically acceptable salt thereof may be effective to reduce the size of the vascular aneurysm or it may be administered to the subject prior to the onset of the vascular aneurysm such that the aneurysm is prevented. In one embodiment, the vascular tissue is an artery, e.g., the aorta, e.g., the abdominal aorta. In a further embodiment, the tetracycline compounds of the invention are used to treat disorders described in U.S. Pat. Nos. 6,043,225 and 5,834,449, incorporated herein by reference in their entirety.
- The compounds of the invention or a pharmaceutically acceptable salt thereof can be used alone or in combination with one or more therapeutic agent in the methods of the invention disclosed herein.
- The language “in combination with” another therapeutic agent or treatment includes co-administration of the tetracycline compound and with the other therapeutic agent or treatment as either a single combination dosage form or as multiple, separate dosage forms, administration of the tetracycline compound first, followed by the other therapeutic agent or treatment and administration of the other therapeutic agent or treatment first, followed by the tetracycline compound.
- The other therapeutic agent may be any agent that is known in the art to treat, prevent, or reduce the symptoms of a tetracycline-responsive disease or disorder. The choice of additional therapeutic agent(s) is based upon the particular tetracycline-responsive disease or disorder being treated. Such choice is within the knowledge of a treating physician. Furthermore, the other therapeutic agent may be any agent of benefit to the patient when administered in combination with the administration of a tetracycline compound.
- The compounds of the invention or a pharmaceutically acceptable salt thereof can be used alone or in combination with one or more antibiotics and/or immunomodulators (e.g. Deoxycholic acid, Macrokine, Abatacept, Belatacept, Infliximab, Adalimumab, Certolizumab pegol, Afelimomab, Golimumab, and FKBP/Cyclophilin/Calcineurin: Tacrolimus, Ciclosporin, Pimecrolimus).
- As used herein, the term “subject” means a mammal in need of treatment or prevention, e.g., companion animals (e.g., dogs, cats, and the like), farm animals (e.g., cows, pigs, horses, sheep, goats and the like) and laboratory animals (e.g., rats, mice, guinea pigs and the like). Typically, the subject is a human in need of the specified treatment.
- As used herein, the term “treating” or “treatment” refers to obtaining desired pharmacological and/or physiological effect. The effect can include achieving, partially or substantially, one or more of the following results: partially or totally reducing the extent of the disease, disorder or syndrome; ameliorating or improving a clinical symptom or indicator associated with the disorder; delaying, inhibiting or decreasing the likelihood of the progression of the disease, disorder or syndrome.
- As used herein, “preventing” or “prevention” refers to reducing the likelihood of the onset or development of disease, disorder or syndrome.
- “Effective amount” means that amount of active compound agent that elicits the desired biological response in a subject. In one embodiment, the effective amount of a compound of the invention is from about 0.01 mg/kg/day to about 1000 mg/kg/day, from about 0.1 mg/kg/day to about 100 mg/kg/day, or from about 0.5 mg/kg/day to about 50 mg/kg/day.
- The invention further includes the process for making the composition comprising mixing one or more of the present compounds and an optional pharmaceutically acceptable carrier; and includes those compositions resulting from such a process, which process includes conventional pharmaceutical techniques.
- The compositions of the invention include ocular, oral, nasal, transdermal, topical with or without occlusion, intravenous (both bolus and infusion), inhalable, and injection (intraperitoneally, subcutaneously, intramuscularly, intratumorally, or parenterally) formulations. The composition may be in a dosage unit such as a tablet, pill, capsule, powder, granule, liposome, ion exchange resin, sterile ocular solution, or ocular delivery device (such as a contact lens and the like facilitating immediate release, timed release, or sustained release), parenteral solution or suspension, metered aerosol or liquid spray, drop, ampoule, auto-injector device, or suppository; for administration ocularly, orally, intranasally, sublingually, parenterally, or rectally, or by inhalation or insufflation.
- Compositions of the invention suitable for oral administration include solid forms such as pills, tablets, caplets, capsules (each including immediate release, timed release, and sustained release formulations), granules and powders; and, liquid forms such as solutions, syrups, elixirs, emulsions, and suspensions. Forms useful for ocular administration include sterile solutions or ocular delivery devices. Forms useful for parenteral administration include sterile solutions, emulsions, and suspensions.
- The compositions of the invention may be administered in a form suitable for once-weekly or once-monthly administration. For example, an insoluble salt of the active compound may be adapted to provide a depot preparation for intramuscular injection (e.g., a decanoate salt) or to provide a solution for ophthalmic administration.
- The dosage form containing the composition of the invention contains an effective amount of the active ingredient necessary to provide a therapeutic effect. The composition may contain from about 5,000 mg to about 0.5 mg (preferably, from about 1,000 mg to about 0.5 mg) of a compound of the invention or salt form thereof and may be constituted into any form suitable for the selected mode of administration. The composition may be administered about 1 to about 5 times per day. Daily administration or post-periodic dosing may be employed.
- For oral administration, the composition is preferably in the form of a tablet or capsule containing, e.g., 500 to 0.5 milligrams of the active compound. Dosages will vary depending on factors associated with the particular patient being treated (e.g., age, weight, diet, and time of administration), the severity of the condition being treated, the compound being employed, the mode of administration, and the strength of the preparation.
- The oral composition is preferably formulated as a homogeneous composition, wherein the active ingredient is dispersed evenly throughout the mixture, which may be readily subdivided into dosage units containing equal amounts of a compound of the invention. Preferably, the compositions are prepared by mixing a compound of the invention (or pharmaceutically acceptable salt thereof) with one or more optionally present pharmaceutical carriers (such as a starch, sugar, diluent, granulating agent, lubricant, glidant, binding agent, and disintegrating agent), one or more optionally present inert pharmaceutical excipients (such as water, glycols, oils, alcohols, flavoring agents, preservatives, coloring agents, and syrup), one or more optionally present conventional tableting ingredients (such as corn starch, lactose, sucrose, sorbitol, talc, stearic acid, magnesium stearate, dicalcium phosphate, and any of a variety of gums), and an optional diluent (such as water).
- Binder agents include starch, gelatin, natural sugars (e.g., glucose and beta-lactose), corn sweeteners and natural and synthetic gums (e.g., acacia and tragacanth). Disintegrating agents include starch, methyl cellulose, agar, and bentonite.
- Tablets and capsules represent an advantageous oral dosage unit form. Tablets may be sugarcoated or filmcoated using standard techniques. Tablets may also be coated or otherwise compounded to provide a prolonged, control-release therapeutic effect. The dosage form may comprise an inner dosage and an outer dosage component, wherein the outer component is in the form of an envelope over the inner component. The two components may further be separated by a layer which resists disintegration in the stomach (such as an enteric layer) and permits the inner component to pass intact into the duodenum or a layer which delays or sustains release. A variety of enteric and non-enteric layer or coating materials (such as polymeric acids, shellacs, acetyl alcohol, and cellulose acetate or combinations thereof) may be used.
- Compounds of the invention may also be administered via a slow release composition; wherein the composition includes a compound of the invention and a biodegradable slow release carrier (e.g., a polymeric carrier) or a pharmaceutically acceptable non-biodegradable slow release carrier (e.g., an ion exchange carrier).
- Biodegradable and non-biodegradable slow release carriers are well known in the art. Biodegradable carriers are used to form particles or matrices which retain an active agent(s) and which slowly degrade/dissolve in a suitable environment (e.g., aqueous, acidic, basic and the like) to release the agent. Such particles degrade/dissolve in body fluids to release the active compound(s) therein. The particles are preferably nanoparticles or nanoemulsions (e.g., in the range of about 1 to 500 nm in diameter, preferably about 50-200 nm in diameter, and most preferably about 100 nm in diameter). In a process for preparing a slow release composition, a slow release carrier and a compound of the invention are first dissolved or dispersed in an organic solvent. The resulting mixture is added into an aqueous solution containing an optional surface-active agent(s) to produce an emulsion. The organic solvent is then evaporated from the emulsion to provide a colloidal suspension of particles containing the slow release carrier and the compound of the invention.
- The compound disclosed herein may be incorporated for administration orally or by injection in a liquid form such as aqueous solutions, suitably flavored syrups, aqueous or oil suspensions, flavored emulsions with edible oils such as cottonseed oil, sesame oil, coconut oil or peanut oil and the like, or in elixirs or similar pharmaceutical vehicles. Suitable dispersing or suspending agents for aqueous suspensions, include synthetic and natural gums such as tragacanth, acacia, alginate, dextran, sodium carboxymethylcellulose, methylcellulose, polyvinyl-pyrrolidone, and gelatin. The liquid forms in suitably flavored suspending or dispersing agents may also include synthetic and natural gums. For parenteral administration, sterile suspensions and solutions are desired. Isotonic preparations, which generally contain suitable preservatives, are employed when intravenous administration is desired.
- The compounds may be administered parenterally via injection. A parenteral formulation may consist of the active ingredient dissolved in or mixed with an appropriate inert liquid carrier. Acceptable liquid carriers usually comprise aqueous solvents and other optional ingredients for aiding solubility or preservation. Such aqueous solvents include sterile water, Ringer's solution, or an isotonic aqueous saline solution. Other optional ingredients include vegetable oils (such as peanut oil, cottonseed oil, and sesame oil), and organic solvents (such as solketal, glycerol, and formyl). A sterile, non-volatile oil may be employed as a solvent or suspending agent. The parenteral formulation is prepared by dissolving or suspending the active ingredient in the liquid carrier whereby the final dosage unit contains from 0.005 to 10% by weight of the active ingredient. Other additives include preservatives, isotonizers, solubilizers, stabilizers, and pain-soothing agents. Injectable suspensions may also be prepared, in which case appropriate liquid carriers, suspending agents and the like may be employed.
- Compounds of the invention may be administered intranasally using a suitable intranasal vehicle.
- In another embodiment, the compounds of this invention may be administered directly to the lungs by inhalation.
- Compounds of the invention may also be administered topically or enhanced by using a suitable topical transdermal vehicle or a transdermal patch.
- For ocular administration, the composition is preferably in the form of an ophthalmic composition. The ophthalmic compositions are preferably formulated as eye-drop formulations and filled in appropriate containers to facilitate administration to the eye, for example a dropper fitted with a suitable pipette. Preferably, the compositions are sterile and aqueous based, using purified water. In addition to the compound of the invention, an ophthalmic composition may contain one or more of: a) a surfactant such as a polyoxyethylene fatty acid ester; b) a thickening agents such as cellulose, cellulose derivatives, carboxyvinyl polymers, polyvinyl polymers, and polyvinylpyrrolidones, typically at a concentration in the range of about 0.05 to about 5.0% (wt/vol); c) (as an alternative to or in addition to storing the composition in a container containing nitrogen and optionally including a free oxygen absorber such as Fe), an anti-oxidant such as butylated hydroxyanisol, ascorbic acid, sodium thiosulfate, or butylated hydroxytoluene at a concentration of about 0.00005 to about 0.1% (wt/vol); d) ethanol at a concentration of about 0.01 to 0.5% (wt/vol); and e) other excipients such as an isotonic agent, buffer, preservative, and/or pH-controlling agent. The pH of the ophthalmic composition is desirably within the range of 4 to 8.
- In certain embodiments, the composition of this invention includes one or more additional agents. The other therapeutic agent may be ay agent that is capable of treating, preventing or reducing the symptoms of a tetracycline-responsive disease or disorder. Alternatively, the other therapeutic agent may be any agent of benefit to a patient when administered in combination with the tetracycline compound in this invention.
- While this invention has been particularly shown and described with references to example embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention encompassed by the appended claims.
- The following abbreviations are used in throughout the application.
- Ac acetyl
- AIBN 2,2′-azobis(2-methylpropionitrile)
- aq aqueous
- Bn benzyl
- Boc tert-butoxycarbonyl
- Bu butyl
- Cbz benzyloxycarbonyl
- Cy tricyclohexylphosphine
- dba dibenzylideneacetone
- DIBAL-H diisobutylaluminum hydride
- DIEA N,N-diisopropylethylamine
- DMAP 4-(dimethylamino)pyridine
- DME 1,2-dimethoxyethane
- DMF N,N-dimethylformamide
- DMPU 1,3-dimethyl-3,4-5,6-tetrahydro-2(1H)-pyrimidone
- DMSO dimethyl sulfoxide
- EDC N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide
- ESI electrospray ionization
- Et ethyl
- EtOAc ethyl acetate
- HPLC high performance liquid chromatography
- HOBt 1-hydroxybenzotriazole
- i iso
- IBX 2-iodoxybenzoic acid
- LDA lithium diisopropylamide
- LHMDS lithium bis(trimethylsilyl)amide
- LTMP lithium 2,2,6,6-tetramethylpiperidide
- MeOH methanol
- Ms methanesulfonyl
- MS mass spectrometry
- MTBE methyl tert-butyl ether
- MW molecular weight
- NBS N-bromosuccinimide
- NCS N-chlorosuccinimide
- NMR nuclear magnetic resonance spectrometry
- Ph phenyl
- Pr propyl
- s secondary
- t tertiary
- TMEDA N,N,N′N′-tetramethylethylenediamine
- TBS tert-butyldimethylsilyl
- TEA triethylamine
- Tf trifluoromethanesulfonyl
- TFA trifluoroacetic acid
- TFAA trifluoroacetic anhydride
- THF tetrahydrofuran
- TLC thin layer chromatography
- Ts para-toluenesulfonyl
- TsOH para-toluenesulfonic acid
- Xantphos 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene
- Detailed procedures for each of the steps depicted in the following Schemes 1-13 are set forth in the Examples section.
- Compounds of Formula II were prepared according to one of Schemes 7-9, depending upon the actual structure. Intermediates used in Scheme 7-9 were prepared by one of Schemes 1-6, as was appropriate for the final structure of the compound.
- Compounds of Formula II, wherein X is fluoro were synthesized using a common N-substituted phenyl 4-(benzyloxy)-7-fluoro-6-methylisoindoline-5-carboxylate intermediate, which is prepared according to Scheme 1.
- An alternate route to certain N-substituted phenyl 4-(benzyloxy)-7-fluoro-6-methylisoindoline-5-carboxylate intermediates is shown in Scheme 2
- Compounds of Formula II, wherein X is chloro were synthesized using a common N-substituted phenyl 4-(benzyloxy)-7-chloro-6-methylisoindoline-5-carboxylate intermediate, which is prepared according to Scheme 3.
- Compounds of Formula II, wherein X is CF3 were synthesized using a common N-substituted phenyl 4-(benzyloxy)-7-trifluoromethyl-6-methylisoindoline-5-carboxylate intermediate, which is prepared according to Scheme 4.
- Compounds of Formula II, wherein X is OCH3 were synthesized using a common N-substituted phenyl 4-(benzyloxy)-7-methoxy-6-methylisoindoline-5-carboxylate intermediate, which is prepared according to
Scheme 5. - Compounds of Formula II, wherein X is N(CH3)2 were synthesized using a common N-substituted phenyl 4-(benzyloxy)-7-dimethylamino-6-methylisoindoline-5-carboxylate intermediate, which is prepared according to Scheme 6.
- Compounds of Formula II were synthesized by combining any of the intermediates S1-11, S2-1, S3-13, S4-10, S5-9, or S6-2 described above in Schemes 1-6 with an enone S7-1, followed by deprotection and reduction according to
Scheme 7. - Compounds of Formula II wherein X is fluoro and R1 is —C(O)CH2N(R2)(R3) or hydrogen were prepared according to Scheme 8.
- Compound of Formula II wherein X is hydrogen are prepared by reduction of the corresponding compounds wherein X is chloro according to Scheme 9
- Compounds of Formula III are synthesized through a common N-substituted phenyl 8-(benzyloxy)-5-fluoro-6-methyl-1,2,3,4-tetrahydroisoquinoline-7-carboxylate intermediate (S10-3) according to Scheme 10, below
- Compounds of Formula IV were prepared using a common N-substituted phenyl 5-(benzyloxy)-8-fluoro-7-methyl-1,2,3,4-tetrahydroisoquinoline-6-carboxylate intermediate according to Scheme 11
- Compounds of Formula V, wherein R7a and R7b are taken together to form ═O are synthesized according to Scheme 12.
- Compounds of Formula V, wherein R7a and R7b are hydrogen are prepared according to Scheme 13
-
- To a THF solution of 5-fluoro-2-methoxybenzoic acid (S1-1, 500 mg, 2.94 mmol, Aldrich 523097) cooled at −78° C. was added a THF solution of s-BuLi (4.60 mL, 1.40 M, 6.44 mmol, 2.2 eq) and TMEDA (0.97 mL, 6.47 mmol, 2.2 eq). The reaction was stirred at −78° C. for 2 h. Methyl iodide (1.10 mL, 17.64 mmol, 6 eq) was added to the reaction mixture dropwise. The reaction was allowed to warm to 25° C. over 1 h and stirred at 25° C. for 1 h. NaOH (6 N, 20 mL) was added. The resulting mixture was extracted with t-butylmethyl ether (20 mL×2). The aqueous layer was acidified with HCl (6 N) to pH 1 and extracted with EtOAc (20 mL×4). The combined EtOAc extracts were dried (Na2SO4) and concentrated to give 510 mg of crude product S1-2: 1H NMR (400 MHz, CDCl3) δ 7.06 (dd, J=9.8, 8.5 Hz, 1H), 6.75 (dd, J=9.8, 3.7 Hz, 1H), 3.86 (s, 3H), 2.34 (d, J=2.4 Hz, 3H); MS (ESI) m/z 185.12 (M+H).
-
- Oxalyl chloride (0.95 mL, 11.10 mmol, 5.5 eq) was added to CH2Cl2 solution (15 mL, anhydrous) of S1-2 (510 mg, 2.00 mmol). DMF (0.1 mL) was added to the resulting mixture. The reaction was stirred at 25° C. for 1 h and concentrated. The resulting solid was re-dissolved in 15 mL of anhydrous CH2Cl2. Phenol (520 mg, 5.50 mmol, 2.8 eq), DMAP (670 mg, 5.6 mmol, 2.8 eq), and triethylamine (1.90 mL, 13.90 mmol, 7.0 eq) were added to the reaction mixture. The reaction was stirred at 25° C. for 12 h and concentrated. EtOAc and H2O were added to the residue. The organic layer was washed with NaOH (1 N), H2O, and brine, dried (Na2SO4), and concentrated. Flash chromatography on silica gel (40:1 hexanes/EtOAc) yielded 400 mg of compound S1-3 (52% for 2 steps): 1H NMR (400 MHz, CDCl3) δ 7.47-7.41 (m, 2H), 7.31-7.24 (m, 3H), 7.08 (dd, J=9.2, 9.2 Hz, 1H), 6.77 (dd, J=9.2, 3.7 Hz, 1H), 3.88 (s, 3H), 2.36 (d, J=2.3 Hz, 3H); MS (ESI) m/z 261.12 (M+H).
-
- BBr3 (1.85 mL, 1 M, 1.85 mmol, 1.2 eq) was added to a CH2Cl2 solution (8 mL) of S1-3 (400 mg, 1.54 mmol) at −78° C. The reaction was stirred from −78° C. to 25° C. for 1.5 h, quenched with saturated NaHCO3 and concentrated. EtOAc and H2O were added to the reaction mixture. The aqueous layer was extracted with EtOAc. The combined EtOAc extracts were dried (Na2SO4) and concentrated to yield 360 mg of crude S1-4: 1H NMR (400 MHz, CDCl3) δ 10.66 (s, 1H), 7.50-7.44 (m, 2H), 7.36-7.31 (m, 1H), 7.26-7.18 (m, 3H), 6.86 (dd, J=9.3, 4.9 Hz, 1H), 2.60 (d, J=2.4 Hz, 3H); MS (ESI) m/z 245.11 (M−H).
-
- Compound S1-4 (4.92 g, 95% purity, 20 mmol) was dissolved in acetic acid (50 mL) and bromine (1.54 mL, 30 mmol) was added via syringe at room temp. After stirred at room temp for 2 hour, LC/MS indicated that the starting material was consumed. This reaction mixture was dilute with ethyl acetate, wash with water (3×100 mL) and brine. The organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. This gave 7.06 g of compound S1-5 as light yellow solid: 1H NMR (400 MHz, CDCl3) δ 11.14 (s, 1H), 7.52 (d, J=9.2 Hz, 1H), 7.49-7.43 (m, 2H), 7.36-7.30 (m, 1H), 7.21-7.16 (m, 2H), 2.55 (d, J=2.3 Hz, 3H).
-
- Compound S1-5 (crude, 1.06 g, 2.97 mmol) was dissolve in acetone (20 mL) with potassium carbonate (821 mg, 5.94 mmol, 2.0 eq) and cooled to 0° C. in an ice-bath. Benzyl bromide (540 μL, 4.45 mmol, 1.5 eq) was added dropwise. After 2 hrs, LC/MS indicated that the starting material was consumed 40%. The reaction mixture was heated to 50° C. for another hour and the starting material was all consumed. The reaction mixture was diluted with ethyl acetate (100 mL) and washed with water and brine. The organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. This gave 2.2 g of the crude S1-6, which was purified by column chromatography (Biotage 10 g column, 2 to 5% ethyl acetate in hexane gradient), yielding 1.03 g (84% for two steps) of the pure compound S1-6 as an colorless oil: 1H NMR (400 MHz, CDCl3) δ 7.50-7.47 (m, 2H), 7.40-7.33 (m, 6H), 7.25 (t, J=7.3 Hz, 1H), 7.04 (d, J=8.6 Hz, 2H), 5.09 (s, 2H), 2.32 (d, J=1.8 Hz, 3H).
-
- LDA solution was prepared by adding n-BuLi (1.6 M, 5.1 mL, 8.16 mmol, 1.5 eq) to diisopropylamine (1.15 mL, 8.16 mmol) in THF (15 mL) at −78° C. The reaction mixture was warmed up to −20° C. and stirred for 15 min. After LDA solution was cooled to −78° C., compound S1-6 (2.26 g, 5.44 mmol) in THF (5 mL) was added dropwise, forming an orange-red solution. After 10 min, DMF (1.26 mL, 16.3 mmol, 3 eq) was added dropwise. The reaction solution was allowed to warm up to −20° C. in 1 hour and was quenched with NH4Cl (aq. Solution). LC/MS indicated that the starting material was all consumed. The reaction mixture was diluted with ethyl acetate (100 mL) and washed with water and brine. The organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. This gave 2.42 g of the crude S1-7, which was purified by column chromatography (Biotage 24 g column, 5 to 10% ethyl acetate in hexane gradient), yielding 2.23 g (92%) of the pure compound S1-7 as light yellow solid. 1H NMR (400 MHz, CDCl3) δ 10.37 (s, 1H), 7.51-7.47 (m, 2H), 7.40-7.33 (m, 5H), 7.27 (t, J=7.3 Hz, 1H), 7.06-7.02 (m, 2H), 5.12 (s, 2H), 2.37 (d, J=2.3 Hz, 3H).
-
- Compound S1-7 (416 mg, 0.94 mmol) was dissolved in methanol (5 mL) and sodium borohydride (75.6 mg, 2 mmol) was added in several portions. During the addition, gas evolution was observed. After stirring at rt for 30 min, LC/MS indicated that the starting material was consumed. This reaction mixture was diluted with ethyl acetate and washed with water (2×20 mL) and brine. The organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude material was purified by column chromatography (Biotage 10 g column, 5 to 20% ethyl acetate in hexane gradient), yielding 367 mg (87.7%) of the pure compound S1-8 as a colorless oil. 1H NMR (400 MHz, CDCl3) δ 10.37 (s, 1H), 7.49 (dd, 1=7.8, 2.3 Hz, 2H), 7.40-7.33 (m, 5H), 7.25 (t, J=7.8 Hz, 1H), 7.07-7.02 (m, 2H), 5.10 (s, 2H), 4.91 (dd, J=6.9, 2.3 Hz, 2H), 2.35 (d, J=2.3 Hz, 3H); MS (ESI) m/z 467.10, 469.08 (M+Na).
-
- i-Propyl magnesium chloride/lithium chloride solution (Chemetall Foote Corporation, 1.2 M solution in THF, 4.4 mL, 5.3 mmol) was added to a −78° C. solution of compound S1-8 (472 mg, 1.06 mmol) in THF (10 mL). The reaction mixture was allowed to warm to 0° C. over 1 hour. Paraformaldehyde (318 mg, 10.6 mmol) was added, and the reaction was allowed to warm to rt. After 1 hour, the reaction mixture was heated to 40° C. After 1 hour, the reaction mixture was quenched with ammonium chloride (saturated, aqueous solution) and was extracted with EtOAc (2×). The combined extracts were dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude material was purified by column chromatography (Biotage 10 g column, 10 to 35% EtOAc in hexane gradient), yielding 337 mg (80%) of S1-9 as a thick oil. 1H NMR (400 MHz, CDCl3) δ 7.45-7.34 (m, 7H), 7.30-7.23 (m, 1H), 7.10 (d, J=7.8 Hz, 2H), 5.08 (s, 2H), 4.85 (s, 2H), 4.76 (s, 2H), 2.39 (d, J=2.3 Hz, 3H); MS (ESI) m/z 419.19 (M+Na).
-
- To a solution of compound S1-9 (2.98 g, 7.52 mmol, 1 eq) in 1,2-dichloroethane (20 mL) was added thionyl chloride (2.18 mL, 30.1 mmol, 4 eq) and tetrabutylammonium chloride (174 mg, 0.76 mmol, 0.1 eq). The reaction vessel was sealed and the mixture heated to 80° C. for 2 h, then concentrated under reduced pressure. Purification of the resulting crude oil via flash column chromatography on silica gel (Redisep, 80 g, 4 to 6% EtOAc in hexane gradient) provided 2.66 g of S1-10 (81%) as a waxy white solid: 1H NMR (400 MHz, CDCl3) δ 7.48-7.42 (m, 2H), 7.41-7.34 (m, 4H), 7.29-7.24 (m, 1H), 7.10-7.05 (m, 2H), 5.13 (s, 2H), 4.81 (s, 4H), 2.44-2.39 (m, 3H); MS (ESI) m/z 431.14, 433.16 (M+H).
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- Compound S1-10 (120 mg, 0.277 mmol), t-butylamine (0.032 mL, 0.305 mmol) and diisopropylethylamine (0.096 mL, 0.554 mmol) were heated to 110° C. in 1,2-dimethoxyethane (1 mL). After 2 hours, additional t-butylamine (0.100 mL, 0.95 mmol) was added. After 2 more hours, additional t-butylamine (0.500 mL, 4.75 mmol) was added, and the reaction mixture was heated overnight. The reaction mixture was concentrated under reduced pressure and was purified by column chromatography (Biotage 10 g column, 5 to 20% EtOAc in hexane gradient), yielding 64.1 mg (53%) of the product. Rf=0.25 in 20% EtOAc in hexane; 1H NMR (400 MHz, CDCl3) δ 7.42-7.30 (m, 7H), 7.27-7.20 (m, 1H), 7.04 (d, J=7.8 Hz, 2H), 5.02 (s, 2H), 4.08 (s, 2H), 4.04 (s, 2H), 2.33 (d, J=1.8 Hz, 3H), 1.15 (s, 9H); MS (ESI) m/z 434.29 (M+H).
- The following compounds were prepared by methods similar to those described for S1-11-1.
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- 1H NMR (400 MHz, CDCl3) δ 7.41-7.30 (m, 7H), 7.25-7.20 (m, 1H), 7.05-7.00 (m, 2H), 5.01 (s, 2H), 4.67 (t, J=4.9 Hz, 1H), 4.55 (t, J=4.9 Hz, 1H), 4.08 (s, 4H), 3.08 (t, J=4.9 Hz, 1H), 3.01 (t, J=4.9 Hz, 1H), 2.34-2.32 (m, 3H); MS (ESI) m/z 424.63 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.43-7.31 (m, 7H), 7.25-7.20 (m, 1H), 7.07-7.01 (m, 2H), 5.03 (s, 2H), 4.07 (s, 4H), 3.57 (t, J=5.5 Hz, 2H), 3.41 (s, 3H), 2.95 (t, J=5.5 Hz, 2H), 2.36-2.34 (m, 3H); MS (ESI) m/z 436.38 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.37-7.31 (m, 7H), 7.29-7.23 (m, 1H), 7.05-6.99 (m, 2H), 5.01 (s, 2H), 3.95 (s, 3H), 2.47 (d, J=6.1 Hz, 2H), 2.33 (s, 3H), 1.83-1.72 (m, 1H), 0.95 (d, J=5.5 Hz, 6 Hz); MS (ESI) m/z 434.27 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.41-7.32 (m, 7H), 7.25-7.20 (m, 1H), 7.07-7.02 (m, 2H), 5.03 (s, 2H), 4.16-4.01 (m, 5H), 3.96-3.87 (m, 1H), 3.84-3.76 (m, 1H), 3.37-3.27 (m, 1H), 2.89-2.77 (m, 2H), 2.35 (s, 3H), 1.98-1.83 (m, 2H), 1.66-1.54 (m, 1H); MS (ESI) m/z 462.82 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.41-7.32 (m, 7H), 7.25-7.20 (m, 1H), 7.07-7.02 (m, 2H), 5.03 (s, 2H), 4.16-4.01 (m, 5H), 3.96-3.87 (m, 1H), 3.84-3.76 (m, 1H), 3.37-3.27 (m, 1H), 2.89-2.77 (m, 2H), 2.35 (s, 3H), 1.98-1.83 (m, 2H), 1.66-1.54 (m, 1H); MS (ESI) m/z 462.80 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.44-7.30 (m, 7H), 7.25-7.20 (m, 1H), 7.08-7.00 (m, 2H), 5.04 (s, 2H), 4.06-3.95 (m, 4H), 2.82-2.71 (m, 1H), 2.35 (s, 3H), 1.18 (d, J=6.1 Hz, 6H); MS (ESI) m/z 420.62 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.43-7.30 (m, 7H), 7.25-7.20 (m, 1H), 7.08-7.01 (m, 2H), 5.04 (s, 2H), 4.06-3.95 (m, 4H), 2.67-2.56 (m, 1H), 2.35 (s, 3H), 1.72-1.57 (m, 1H), 1.51-1.37 (m, 1H), 1.13 (d, J=6.1 Hz, 3H), 0.94 (t, J=7.0 Hz, 3H); MS (ESI) m/z 434.00 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.43-7.29 (m, 7H), 7.25-7.20 (m, 1H), 7.08-7.00 (m, 2H), 5.04 (s, 2H), 4.05-3.96 (m, 4H), 2.66-2.55 (m, 1H) 2.34 (s, 3H), 1.72-1.57 (m, 1H), 1.51-1.37 (m, 1H), 1.13 (d, J=6.1 Hz, 3H), 0.95 (t, J=7.3 Hz, 3H); MS (ESI) m/z 434.64 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.43-7.29 (m, 7H), 7.25-7.20 (m, 1H), 7.08-7.00 (m, 2H), 5.04 (s, 2H), 4.05-3.96 (m, 4H), 2.66-2.55 (m, 1H) 2.34 (s, 3H), 1.72-1.57 (m, 1H), 1.51-1.37 (m, 1H), 1.13 (d, J=6.1 Hz, 3H), 0.95 (t, J=7.3 Hz, 3H); MS (ESI) m/z 434.60 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.42-7.34 (m, 7H), 7.29-7.22 (m, 1H), 7.06-6.99 (m, 2H), 5.04 (s, 2H), 4.02-3.95 (m, 4H), 2.51-2.42 (m, 1H), 2.34 (s, 3H), 1.98-1.87 (m, 1H), 1.01 (d, J=6.1 Hz, 3H), 0.95 (d, J=6.7 Hz, 3H), 0.89 (d, J=6.7 Hz, 3H): MS (ESI) m/z 448.85 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.42-7.34 (m, 7H), 7.29-7.22 (m, 1H), 7.06-6.99 (m, 2H), 5.04 (s, 2H), 4.02-3.95 (m, 4H), 2.51-2.42 (m, 1H), 2.34 (s, 3H), 1.98-1.87 (m, 1H), 1.01 (d, J=6.1 Hz, 3H), 0.95 (d, J=6.7 Hz, 3H), 0.89 (d, J=6.7 Hz, 3H): MS (ESI) m/z 446.48 (M−H).
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- 1H NMR (400 MHz, CDCl3) δ 7.41-7.3 (m, 7H), 7.28-7.19 (m, 1H), 7.05-7.00 (m, 2H), 5.01 (s, 2H), 3.99-3.94 (m, 4H), 2.93-2.91 (m, 1H), 2.33 (s, 3H), 1.93-1.80 (m, 2H), 1.80-1.67 (m, 2H), 1.66-1.45 (m, 4H); MS (ESI) m/z 446.61 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.41-7.32 (m, 7H), 7.25-7.20 (m, 1H), 7.07-7.02 (m, 2H), 5.03 (s, 2H), 4.04-3.94 (m, 5H), 3.93-3.81 (m, 2H), 3.77-3.70 (m, 1H), 3.37-3.27 (m, 1H), 2.37-2.31 (m, 3H), 2.10-2.05 (m, 1H), 2.02-2.10 (m, 1H); MS (ESI) m/z 448.80 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.40-7.20 (m, 7H), 7.28-7.25 (m, 1H), 7.16-7.02 (m, 2H), 5.02 (s, 2H), 4.05 (s, 2H), 4.00 (s, 2H), 2.33-2.32 (m, 3H), 1.52 (s, 3H), 1.49 (q, J=7.3 Hz, 2H), 1.05 (s, 6H), 0.90 (t, J=7.3 Hz, 3H); MS (ESI) m/z 448.25 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.40-7.23 (m, 7H), 7.28-7.25 (m, 1H), 7.16-7.02 (m, 2H), 5.03 (s, 2H), 4.17 (s, 2H), 4.12 (s, 2H), 2.34-2.32 (m, 3H), 1.03-0.98 (m, 7H), 0.47-0.40 (m, 2H), 0.31-0.26 (m, 2H); MS (ESI) m/z 460.28 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.42-7.28 (m, 7H), 7.25-7.20 (m, 1H), 7.08-7.00 (m, 2H), 5.03 (s, 2H), 4.09 (s, 2H), 4.03 (s, 2H), 2.35 (s, 3H), 1.46 (s, 2H), 1.19 (s, 6H), 1.02 (s, 9H); MS (ESI) m/z 490.34 (M+H).
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- 1H NMR (400 MHz, CDCl3) δ 7.42-7.28 (m, 7H), 7.25-7.20 (m, 1H), 7.08-7.00 (m, 2H), 5.04 (s, 2H), 4.15 (s, 2H), 4.13 (s, 2H), 2.35 (s, 3H), 2.10-2.02 (m, 1H), 0.60-0.48 (m, 4H); MS (ESI) m/z 416.41 (M−H).
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- 1H NMR (400 MHz, CDCl3) δ 7.42-7.28 (m, 7H), 7.25-7.20 (m, 1H), 7.08-7.00 (m, 2H), 5.03 (s, 2H), 3.96 (s, 2H), 3.94 (s, 2H), 3.35-3.22 (m, 1H), 2.35 (s, 3H), 2.10-1.98 (m, 4H), 1.80-1.70 (m, 2H); MS (ESI) m/z 430.46 (M−H).
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- 1H NMR (400 MHz, CDCl3) δ 7.41-7.31 (m, 7H), 7.27-7.21 (m, 1H), 7.08-7.03 (m, 2H), 5.03 (s, 2H), 4.05 (s, 2H), 3.94 (s, 2H), 3.40 (m, 2H), 2.35 (s, 3H), 1.11 (s, 6H); MS (ESI) m/z 448.35 (M−H).
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- 1H NMR (400 MHz, CDCl3) δ 7.43-7.30 (m, 7H), 7.25-7.20 (m, 1H), 7.07-7.01 (m, 2H), 6.00-5.87 (m, 1H), 5.33-5.24 (m, 1H), 5.19 (d, J=10.4, 1 H), 5.02 (s, 2H), 4.00 (s, 4H), 3.36 (d, J=6.1, 3 H), 2.35 (s, 3H); MS (ESI) m/z 418.26 (M+H).
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- A solution of alcohol S1-11-20 (92.1 mg, 0.205 mmol, 1 eq) in CH2Cl2 (1 mL) was added dropwise to a solution of pyridine (33.2 μL, 0.410 mmol, 2 eq) and diethylaminosulfur trifluoride (30.1 μL, 0.246 mmol, 1.2 eq) in CH2Cl2 (2 mL) at 0° C. The resulting solution was allowed to warm to ambient temperature and stirred for 2 h. The reaction was diluted with saturated aqueous NH4Cl solution (2 mL), and extracted with EtOAc (2×30 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. Purification of the resulting oil via flash column chromatography on silica gel (Biotage, 25 g, 5 to 30% EtOAc in hexanes gradient) provided 40.0 mg of S1-11-22 (43%) as a clear oil: 1H NMR (400 MHz, CDCl3) δ 7.41-7.32 (m, 7H), 7.25-7.20 (m, 1H), 7.07-7.02 (m, 2H), 5.03 (s, 2H), 4.12 (s, 4H), 2.89 (s, 1H), 2.82 (s, 1H), 2.34 (s, 3H), 1.44 (s, 3H), 1.39 (s, 3H); MS (ESI) m/z 450.45 (M−H).
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- To a solution of DMSO (23.9 μL, 0.337 mmol, 2 eq) in CH2Cl2 (1 mL) at −70° C. was added oxalyl chloride (17.3 μL, 0.201 mmol, 1.2 eq). After 15 minutes, alcohol S1-11-20 (75.8 mg, 0.168 mmol, 1 eq) in CH2Cl2 (500 μL) was added dropwise. After an additional 20 minutes at −70° C., DIEA (147 μL, 0.84 mmol, 5 eq) was added and the solution removed from the cold bath. After 5 minutes, saturated aqueous NH4Cl solution (800 μL) was added and the mixture was allowed to warm. The solution was further diluted with saturated aqueous NH4Cl solution (4 mL) and extracted with CH2Cl2 (2×7 mL). The combined organic layers were washed with brine (2 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure. The resulting crude oil was dissolved in CH2Cl2 (1 mL) and pyrrolidine (69.7 μL, 0.84 mmol, 5 eq) and acetic acid (48 μL, 0.84 mmol, 5 eq) were added. After 40 minutes, sodium triacetoxyborohydride (178.4 mg, 0.84 mmol, 5 eq) was added. After 50 minutes, the reaction was poured into saturated aqueous NaHCO3 solution (8 mL) and extracted with EtOAc (2×30 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. Purification of the resulting oil via flash column chromatography on silica gel (Biotage, 10 g, 1 to 12% methanol in CH2Cl2 gradient) provided 30.3 mg of S1-11-23 (36%) as a white solid: 1H NMR (400 MHz, CDCl3) δ 7.44-7.31 (m, 7H), 7.26-7.21 (m, 1H), 7.09-7.02 (m, 2H), 5.04 (s, 2H), 4.16 (s, 2H), 4.12 (s, 2H), 2.77-2.52 (m, 4H), 2.35 (s, 3H), 1.75 (s, 4H), 1.15 (s, 6H); MS (ESI) m/z 503.38 (M+H).
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- Methanesulfonyl chloride (0.0446 mL, 0.575 mmol) was added dropwise to a solution of compound S1-9 (76.0 mg, 0.192 mmol) and triethylamine (0.107 mL, 0.768 mmol) in dichloromethane (2 mL). After 1 hour, the reaction mixture was diluted with EtOAc and was washed with water (2×) and brine (1×). The organics were dried over Na2SO4, filtered, and were concentrated under reduced pressure. The material was dissolved in DMF (2 mL), diisopropylethylamine (0.100 mL, 0.575 mmol) and neopentylamine (16.7 mg, 0.192 mmol) were added, and the reaction mixture was heated to 60° C. After heating overnight, the reaction mixture was purified by column chromatography (Biotage 5 g column, 0 to 8% EtOAc in hexane gradient), yielding 26.5 mg (31%) of the product S2-1-1 as a white solid. Rf=0.42 in 10% EtOAc in hexane; 1H NMR (400 MHz, CDCl3) δ 7.44-7.30 (m, 7H), 7.28-7.21 (m, 1H), 7.05 (d, J=7.8 Hz, 2H), 5.02 (s, 2H), 4.12 (br s, 4H), 2.53 (s, 2H), 2.34 (d, J=1.8 Hz, 3H), 0.96 (s, 9H); MS (ESI) m/z 448.32 (M+H).
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- To an ice-cooled solution of 2-methoxy-6-methylaniline (S3-1, 25.12 g, 183.1 mmol) in methanol (79 mL) and acetic acid (25 mL) was added a solution of bromine (9.41 mL, 183.1 mmol) in of Acetic acid (79 mL) dropwise via addition funnel. The reaction mixture was allowed to stand for 2 h after complete addition. EtOAc (150 mL) was added, and the solid was collected by filtration and washed with EtOAc, yielding 37.2 g of the HBr salt of compound S3-2 as an off-white solid.
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- 4-Bromo-2-methoxy-6-methylaniline (S3-2, 20 g, 92.7 mmol) was suspended in concentrated HCl (22 mL) and crushed ice (76 g) and cooled in an ice-bath. A solution of NaNO2 (6.52 g, 94.6 mmol) in H2O (22 mL) was added dropwise. The resulting mixture was stirred at 0° C. for 30 min and then neutralized with Na2CO3. A suspension of CuCN (10.4 g 115.9 mmol) in H2O (44 mL) was mixed with a solution of NaCN (14.4 g, 294.8 mmol) in H2O (22 mL) and cooled in an ice-bath. The initial diazonium salt mixture was added to the CuCN and NaCN solution along with toluene (180 mL) with vigorous stirring. The reaction mixture was stirred at 0° C. for 1 h, rt for 2 h, and 50° C. for 1 h. After cooling to rt, the layers were separated. The aqueous layer was further extracted with toluene. The combined organic layers were washed with brine, dried over MgSO4, and concentrated. The residue was passed through a silica gel plug, washed with toluene, and concentrated to give 14.5 g of compound S3-3 as a light yellow solid.
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- To a solution of S3-3 (11.34 g, 50.2 mmol) in THF (100 mL) was added DIBAL-H (1.5 M solution in toluene, 40.1 mL, 60.2 mmol) slowly at −78° C. The reaction mixture was allowed to warm to rt gradually and was stirred overnight. After cooling to 0° C., the reaction was carefully quenched with 1N HCl, and the resulting mixture was stirred at rt for 1 h. The mixture was extracted three times with EtOAc. The combined EtOAc layers were washed with H2O, saturated, aqueous NaHCO3, and brine, dried over MgSO4 and concentrated to provide compound S3-4 as a yellow solid, which was used directly for the next step.
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- To a suspension of S3-4 (assumed 50.2 mmol) in t-BuOH (200 mL) was added a solution of NaClO2 (11.34 g, 100.3 mmol) and NaH2PO4 (34.6 g, 250.8 mmol) in H2O (100 mL) via addition funnel. After complete addition, 2-methyl-2-butene was added. The resulting homogenous solution was stirred at rt for 30 min, and then the volatiles were removed. The residue was suspended in 150 mL of H2O. The solution was acidified to pH˜1 with 1N HCl, and was extracted three times with tert-butyl methyl ether. The combined organic solution was extracted three times with 1N NaOH. The combined aqueous solution was acidified with 6N HCl and was extracted three times with EtOAc. The combined EtOAc extracts were washed with brine, dried over MgSO4, and concentrated to provide 6.84 g benzoic acid (S3-4-a) as an off-white solid. This was pure enough to use directly for the next step.
- To a solution of the above benzoic acid (8.64 g, 35.2 mmol) in dichloromethane (70 mL) was added oxalyl chloride (3.76 mL, 42.3 mmol, 1.2 eq), followed by a couple of drops of DMF (caution, gas evolution). The mixture was stirred at rt for 30 min and the reaction mixture was concentrated under reduced pressure. The residue was further dried under high vacuum. The crude benzoyl chloride was re-dissolved in dichloromethane (70 mL). Triethylamine (12.3 mL, 88.1 mmol, 2.5 eq), phenol (3.98 g, 42.3 mmol, 1.2 eq) and DMAP (0.43 g, 3.52 mmol, 0.1 eq) were added. The mixture was stirred at rt for 1 h at which point LC-MS showed all SM was consumed. The solvent was evaporated. The residue was suspended in EtOAc, and the precipitate was filtered off. The organic solution was then washed with 1 N HCl (three times), H2O, sat. aq. NaHCO3, and brine, dried over Na2SO4, filtered and concentrated. Purification of the residue by Biotage flash chromatography gave compound S3-5 (10.05 g) as an off-white solid: 1H NMR (400 MHz, CDCl3) δ 2.42 (s, 3H), 3.87 (s, 3H), 6.97 (d, J=0.9 Hz, 1H), 7.04 (d, J=0.9 Hz, 1H), 7.22-7.27 (m, 3H), 7.41-7.45 (m, 2H); MS (electrospray) m/z 319.0 (M−H), calcd for C15H12BrO3 319.0.
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- To a solution of compound S3-5 (2.52 g, 7.87 mmol) in CH3CN (16 mL) was added NCS (1.104 g, 8.27 mmol, 1.05 eq) in one portion. The resulting mixture was heated to 60° C. for 45 h. The solvent was evaporated. The residue was suspended in Et2O (400 mL) and was washed with 1 N NaOH, H2O, and brine, dried over Na2SO4, and concentrated to provide 2.76 g of compound S3-6 as a white solid. This material was used directly for the next step without further purification: 1H NMR (400 MHz, CDCl3) δ 2.51 (s, 3H), 3.87 (s, 3H), 7.13 (s, 1H), 7.22-7.28 (m, 3H), 7.44 (dd, J=7.8, 7.8 Hz, 2H); MS (electrospray) m/z 353.0 (M−H), calcd for C15H11BrClO3 352.97.
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- Compound S3-6 (2.76 g, 7.76 mmol) was dissolved in anhydrous dichloromethane (78 mL) and a solution of boron tribromide (1.0 M in dichloromethane, 7.76 mL, 7.76 mmol, 1.0 eq) was added at −78° C. The resulting yellow solution was stirred at −78° C. for 15 min and then at 0° C. for 30 min whereupon sat. aq. NaHCO3 was added. The mixture was stirred at rt for 10 min. and was extracted with EtOAc three times. The combined organic layers were washed with brine, dried over Na2SO4, and concentrated to provide 2.69 g of the phenol intermediate as an off-white solid. This material was used directly for the next step without further purification: 1H NMR (400 MHz, CDCl3) δ 2.83 (s, 3H), 7.19 (d, J=7.8 Hz, 2H), 7.27 (s, 1H), 7.32 (dd, J=7.8, 7.8 Hz, 1H), 7.46 (dd, J=7.8, 7.8 Hz, 2H); MS (electrospray) m/z 339.0 (M−H), calcd for C14H9BrClO3 338.95.
- The above phenol (2.65 g, 7.76 mmol) was dissolved in acetone (40 mL), and K2CO3 (2.14 g, 15.5 mmol, 2 eq) was added followed by benzylbromide (0.97 mL, 8.15 mmol, 1.05 eq). After stirring overnight at rt, the solution was filtered through a bed of Celite. The solid cake was further washed with three portions of EtOAc. The combined organic solution was concentrated. The residue was purified by Biotage flash chromatography to yield 2.97 g of compound S3-7 as a white solid: 1H NMR (400 MHz, CDCl3) δ 2.51 (s, 3H), 5.11 (s, 2H), 7.05 (d, J=7.8 Hz, 2H), 7.19-7.26 (m, 2H), 7.33-7.43 (m, 7H); MS (electrospray) m/z 429.0 (M−H), calcd for C21H15BrClO3 429.00.
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- To a solution of compound $3-7 (1.98 g, 4.59 mmol) in anhydrous THF (23 mL) was added i-PrMgCl.LiCl (1.2 M in THF, 7.65 mL, 9.18 mmol, 2 eq) dropwise at −78° C. under N2 atmosphere. After 10 min, the temperature was raised to 0° C. After stirring for another 1 h at 0° C., DMF (1.80 mL, 22.9 mmol, 5 eq) was added. Stirring was maintained for 30 min at rt. The reaction was quenched by the addition of saturated, aqueous NH4Cl. The layers were separated, and the aqueous layer was further extracted twice with EtOAc. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated. Purification of the residue by Biotage flash chromatography gave compound S3-8 (1.45 g) as a white solid: 1H NMR (400 MHz, CDCl3) δ 2.51 (s, 3H), 5.19 (s, 2H), 7.05 (d, J=7.8 Hz, 2H), 7.25-7.27 (m, 1H), 7.33-7.44 (m, 8H) 10.51 (s, 1H); MS (electrospray) m/z 379.1 (M−H), calcd for C22H16ClO4 379.08.
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- Compound S3-8 (2.51 g, 6.59 mmol) was suspended in methanol (25 mL) and sodium borohydride (373 mg, 9.88 mmol) was added in several portions. After gas evolution ceased and complete solution was achieved, the reaction mixture was quenched with NaHCO3 (saturated, aqueous solution) and was extracted with EtOAc (3×). The organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. This gave 2.49 g (99%) of S3-9 as a white solid. 1H NMR (400 MHz, CDCl3) δ 7.46-7.32 (m, 7H), 7.27-7.21 (m, 1H), 7.13 (s, 1H), 7.07 (d, J=8.7 Hz, 2H), 5.16 (s, 2H), 4.77 (d, J=6.4 Hz, 2H), 2.46 (s, 3H), 2.06 (t, J=6.4 Hz, 1H), MS (ESI) m/z 405.15 (M+H).
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- 10% Palladium on carbon (Degussa, 50 mg) was added to a solution of compound S3-9 (1.85 g, 4.84 mmol) in EtOAc (10 mL), Methanol (10 mL), and chlorobenzene (1.5 mL) and an atmosphere of hydrogen was introduced. After 5 hours, the reaction mixture was purged with nitrogen and was filtered through Celite. The filtrate was concentrated under reduced pressure, yielding the phenol intermediate as a white solid. The intermediate was dissolved in Acetic acid (15 mL) and sodium acetate (0.595 g, 7.26 mmol) was added. Bromine (0.372 mL, 7.26 mmol) was added dropwise over ˜3 min. After 10 min, the reaction mixture was quenched with Na2S2O3 (5% aqueous solution) and was diluted with EtOAc. The layers were separated, and the EtOAc layer was washed with water (3×) and brine (1×). The organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. The material was dissolved in acetone (30 mL), and K2CO3 (1.34 g, 9.68 mmol) and benzyl bromide (0.633 mL, 5.32 mmol) were added. The reaction mixture was heated to 50° C. overnight. Upon cooling to rt, the reaction mixture was diluted with EtOAc and was washed with water (3×) and brine (1×). The organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. The material was purified by column chromatography (Biotage 50 g column, 7 to 60% EtOAc in hexane gradient), yielding 2.03 g (91%) of S3-10. 1H NMR (400 MHz, CDCl3) δ 7.51-7.47 (m, 2H), 7.41-7.31 (m, 5H), 7.30-7.23 (m, 1H), 7.03 (d, J=8.2 Hz, 2H), 5.12-5.05 (m, 4H), 2.48 (s, 3H), 2.18 (t, J=7.1 Hz, 1H); MS (ESI) m/z 482.99, 484.99, 486.99 (M+Na).
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- i-Propyl magnesium chloride/lithium chloride solution (Chemetall Foote Corporation, 1.2 M solution in THF, 4.4 mL, 5.3 mmol) was added to a −78° C. solution of compound S3-10 (490 mg, 1.06 mmol) in THF (10 mL). The reaction mixture was allowed to warm to 0° C. over 1 hour. Paraformaldehyde (318 mg, 10.6 mmol) was added, and the reaction was heated to 40° C. After 1 hour, the reaction mixture was quenched with ammonium chloride (saturated, aqueous solution) and was extracted with EtOAc (3×). The combined extracts were washed with water (3×) and brine (1×), and were dried over Na2SO4, filtered, and concentrated under reduced pressure. The material was purified by column chromatography (Biotage 25 g column, 7 to 80% EtOAc in hexane gradient), yielding 238 mg (54%) of S3-11 as a thick oil. R=0.22 in 30% EtOAc in hexane; 1H NMR (400 MHz, CDCl3) δ 7.45-7.30 (m, 7H), 7.28-7.22 (m, 1H), 7.09 (d, J=8.3 Hz, 2H), 5.09 (s, 2H), 5.00 (d, J=6.4 Hz, 2H), 4.80 (d, J=6.0 Hz, 2H), 2.73 (t, J=6.4 Hz, 1H), 2.52 (s, 3H), 2.48 (t, J=6.0 Hz, 1H); MS (ESI) m/z 435.12 (M+Na).
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- To a solution of S3-11 (2.76 g, 6.67 mmol, 1 eq) in 1,2-dichloroethane (25 mL) was added thionyl chloride (1.93 mL, 26.6 mmol, 4 eq) and tetrabutylammonium chloride (154.3 mg, 0.67 mmol, 0.1 eq). The reaction vessel was sealed and the mixture heated to 80° C. for 2 h, then concentrated under reduced pressure. Purification of the resulting crude oil via flash column chromatography on silica gel (Biotage, 100 g, 2 to 18% EtOAc in hexane gradient) provided 2.47 g of S3-12 (82%) as a waxy white solid: 1H NMR (400 MHz, CDCl3) δ 7.48-7.37 (m, 7H), 7.35-7.324 (m, 1H), 7.10-7.06 (m, 2H), 5.15 (s, 2H), 4.96 (s, 2H), 4.83 (s, 2H), 2.53 (s, 3H); MS (ESI) m/z 447.28, 449.30 (M+H).
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- Compound S3-12 (150 mg, 0.334 mmol), t-amylamine (0.041 mL, 0.35 mmol) and diisopropylethylamine (0.233 mL, 1.34 mmol) were heated to 60° C. in 1,2-dimethoxyethane (0.8 mL). After 1 hour, the reaction mixture was heated to 80° C. overnight. Upon cooling to rt, the reaction mixture was diluted with EtOAc (20 mL) and was washed with NaHCO3 (saturated, aqueous solution, 2×) and brine (1×). The organics were dried over Na2SO4, filtered, and concentrated under reduced pressure. The material was purified by column chromatography (Biotage 25 g column, 2 to 20% EtOAc in hexane gradient), yielding 62.8 mg (40%) of the product. Rf=0.42 in 15% EtOAc in hexane; 1H NMR (400 MHz, CDCl3) δ 7.45-7.30 (m, 7H), 7.28-7.20 (m, 1H), 7.01 (d, J=7.8 Hz, 2H), 5.05 (s, 2H), 4.15-4.04 (m, 4H), 2.43 (s, 3H), 1.49 (q, J=7.8 Hz, 2H), 1.07 (s, 6H), 0.91 (t, 7.8 Hz, 3H); MS (ESI) m/z 464.24, 466.24 (M+H).
- The following compounds were prepared by methods similar to those described for S3-13-1.
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- Rf=0.19 in 15% EtOAc in hexane; MS (ESI) m/z 450.21, 452.20 (M+H).
-
- Rf=0.18 in 15% EtOAc in hexane; MS (ESI) m/z 436.21, 438.19 (M+H).
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- Rf=0.22 in 15% EtOAc in hexane; 1H NMR (400 MHz, CDCl3) δ 7.42-7.28 (m, 7H), 7.26-7.18 (m, 1H), 7.01 (d, J=7.3 Hz, 2H), 5.05 (s, 2H), 4.15-4.00 (m, 4H), 2.43 (s, 3H), 1.74-1.62 (m, 1H), 1.50-1.36 (m, 2H), 1.12 (d, J=6.4 Hz, 3H), 0.94 (t, 7.6 Hz, 3H); MS (ESI) m/z 450.26, 452.26 (M+H).
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- Rf=0.22 in 15% EtOAc in hexane; 1H NMR (400 MHz, CDCl3) δ 7.44-7.30 (m, 7H), 7.28-7.20 (m, 1H), 7.03 (d, J=7.3 Hz, 2H), 5.07 (s, 2H), 4.10 (s, 2H), 4.04 (s, 2H), 2.45 (s, 3H), 1.74-1.62 (m, 1H), 1.50-1.38 (m, 2H), 1.14 (d, J=6.4 Hz, 3H), 0.96 (t, 7.6 Hz, 3H); MS (ESI) m/z 450.21, 452.21 (M+H).
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- Compound S3-5 (20 g, 62.5 mmol, 1.0 eq), 2, 4, 6-trivinyl-cyclotriboroxane-pyridine complex (7.8 g, 31.25 mmol, 0.50 eq), Pd(PPh3)4 (2.2 g, 1.88 mmol, 0.030 eq) and K2CO3 (17.25 g, 125 mmol, 2.0 eq) was added to vessel in 1,4-dioxane:H2O (3:1, V:V). The mixture was bubbled with N2 to remove O2 for 6 times. The mixture was heated to reflux for 19 h. The mixture was concentrated. The residue partitioned between EtOAc and water. The organic layer was dried over Na2SO4 and evaporated to dryness. The crude compound was purified by column chromatography on silica gel eluting with (petroleum ether:EtOAc=200:1→100:1→50:1) to yield 14.8 g of compound S4-1 (88%) as a light yellow solid.
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- An ozone-enriched stream of oxygen was bubbled through a cold (−78° C.) solution of compound S4-1 (21 g, 78.3 mmol, 1.0 eq) in anhydrous CH2Cl2, and the reaction was monitored by TLC until the starting material was consumed. The solution was purged with argon at −78 C for 10 min to remove the excess O3. CH3SCH3 (50 mL) was added into the reaction mixture and stirred for 1 hour from −78° C. to 25° C. The reaction mixture was concentrated. The crude compound was purified by column chromatography on silica gel elute with (petroleum ether:EtOAc=100:1→50:→30:1) to yield 13 g of compound 4-2 (62%) as a light yellow solid.
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- Compound S4-2 (1.8 g, 6.62 mmol, 1 eq) was dissolved in HOAc. Bromine (1.6 mL, 26.5 mmol, 4 eq) was added dropwise into the solution. The reaction mixture was stirred for 1 hour at rt. The mixture was concentrated. The residue was extracted with EtOAc and a saturated NaHCO3. The organic layer was washed with brine and water in return, dried over Na2SO4 and concentrated to dryness. To afford 1.9 g compound S4-3 as a light yellow solid.
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- BBr3 (4.9 g, 1.9 mL, 19.5 mmol, 1.5 eq) was added to a CH2Cl2 solution (30 mL) of S4-3 (3.5 g, 13.0 mmol, 1.0 eq) at −78° C. The reaction was stirred from −78° C. to 25° C. for 1.5 h, quenched with saturated NaHCO3 and the reaction mixture was extracted with EtOAc. The combined EtOAc extracts were dried (Na2SO4) and concentrated to yield 3.3 g of the crude phenol intermediate.
- K2CO3 (3.6 g, 26.0 mmol, 2.0 eq) and BnBr (4.2 g, 26.0 mmol, 2.0 eq) were added to a solution of the above crude phenol (3.3 g, 13.0 mmol, 1.0 eq) in DMF (15 mL). The reaction mixture was stirred at rt for 2 h. The reaction mixture was filtered and washed with EtOAc. Water (150 mL) was added into it and extracted with EtOAc. The organic layer was dried over Na2SO4 and concentrated. The crude compound was purified by column chromatography on silica gel elute with (petroleum ether:EtOAc=100:1→50:1) to yield 3.5 g of compound S4-4 (62% for 3 steps) as a light yellow solid.
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- A DMF (50 mL) solution of compound S4-4 (5 g, 11.8 mmol, 1.0 eq), MeO2CCF2SO2F (11.3 g, 59 mmol, 5.0 eq) and CuI (4.5 g, 23.6 mmol, 2.0 eq) in a sealed tube was heated to 100° C. for 20 h. The mixture was filtered and the solid was washed with EtOAc. The solution was concentrated and partitioned with EtOAc and water. The organic layer was separated and dried over Na2SO4, concentrated to give 7 g of the crude compound S4-5 as brown oil.
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- To a stirred suspension of S4-5 (3.24 g, 7.81 mmol, 1 eq) in methanol (40 mL) was added sodium borohydride (389 mg, 10.2 mmol, 1.3 eq). Gas evolution was evident; the solution was homogeneous after 5 min. After 2 h the reaction mixture was poured into a saturated aqueous NH4Cl solution (95 mL), water (5 mL), and extracted with EtOAc (2×80 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. MS (ESI) m/z 415.39 (M−H).
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- Compound S4-6 (crude, 7.81 mmol) was dissolved in methanol:dioxane (40 mL, 15:1). Palladium on carbon (10%, 160 mg) was added, and the vessel was fitted with a septum and evacuated and back-filled with hydrogen gas three times, and then stirred at ambient temperature under a hydrogen balloon. After 2 h, another 100 mg of palladium catalyst was added and the evacuation and back-fill procedure repeated. After 16 h, another 500 mg of palladium catalyst was added, and the reaction vessel, the evacuation and back-fill procedure repeated, and the solution degassed with bubbling hydrogen for 5 min. After an additional 3 h, the suspension was filtered through Celite to remove the palladium catalyst and concentrated under reduced pressure. The resulting oil was suspended in acetic acid (30 mL). Following addition of sodium acetate (958 mg, 11.7 mmol, 1.5 eq) the solution became homogenous. Bromine (602 μL, 11.7 mmol, 1.5 eq) was added dropwise over six minutes. After 1 h, a solution of sodium thiosulfate (5% aqueous, 40 mL) was added and the solution stirred vigorously for 15 minutes. The reaction solution was extracted with EtOAc (2×45 mL) and the combined organic layers washed with water (2×20 mL), brine (20 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure. To this crude intermediate in acetone (35 mL), were added benzyl bromide (1.02 mL, 8.59 mmol, 1.1 eq) and potassium carbonate (2.16 g, 15.6 mmol, 2 eq). The flask was fitted with a reflux condenser and heated to 50° C. for 6 h. The reaction solution was diluted with water (30 mL) and extracted with EtOAc (2×100 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. Purification of the resulting crude oil via flash column chromatography on silica gel (Biotage, 100 g, 7 to 55% EtOAc in hexane gradient) provided 2.13 g of intermediate 8-benzylalcohol-9-bromo compound S4-7 (55%, 4 steps) as a waxy yellow solid: 1H NMR (400 MHz, CDCl3) δ 7.53-7.48 (m, 2H), 7.42-7.32 (m, 5H), 7.29-7.24 (m, 1H), 7.10-6.95 (m, 2H), 5.14 (s, 2H), 5.05-4.95 (m, 4H), 2.58-2.53 (m, 3H), 2.20-2.13 (m, 1H); MS (ESI) m/z 493.39, 495.27 (M−H).
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- Compound S4-7 (2.13 g, 4.30 mmol, 1 eq) was azeotropically dried from toluene three times and dried under vacuum for 18 h. To a solution of this bromide in THF (35 mL) under N2 at −50° C. was added isopropyl magnesium chloride-lithium chloride complex (1.2 M solution in THF, 17.9 mL, 21.5 mmol, 5 eq) dropwise over 10 minutes. The resulting dark yellow solution was allowed to warm to 0° C. over 1 h. Paraformaldehyde (1.27 g, 43.1 mmol, 10 eq) was added as a solid at 0° C., the reaction flask was fitted with a reflux condenser, and the vessel was heated to 40° C. in an oil bath for 2 h. After cooling, the resulting slurry was poured into saturated aqueous NH4Cl solution (40 mL) and water (15 mL), and extracted with EtOAc (2×90 mL). The combined organic layers were washed with brine (30 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure. Purification of the resulting crude oil via flash column chromatography on silica gel (Biotage, 100 g, 6 to 55% EtOAc in hexane gradient) provided 1.47 g of S4-8 (76%) as a white solid: 1H NMR (400 MHz, CDCl3) δ 7.48-7.35 (m, 7H), 7.29-7.23 (m, 1H), 7.10-7.03 (m, 2H), 5.14 (s, 2H), 4.92-4.83 (m, 4H), 2.96 (t, J=6.7 Hz, 1H), 2.78 (t, J=6.7 Hz, 1H), 2.62-2.55 (m, 3H): MS (ESI) m/z 445.38 (M−H).
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- To a solution of S4-8 (1.47 g, 3.29 mmol, 1 eq) in 1,2-dichloroethane (13 mL) was added thionyl chloride (956 μL, 13.2 mmol, 4 eq) and tetrabutylammonium chloride (75 mg, 0.33 mmol, 0.1 eq). The reaction vessel was sealed and the mixture heated to 80° C. for 3 h, then concentrated under reduced pressure. Purification of the resulting crude oil via flash column chromatography on silica gel ((Biotage, 50 g, 2 to 20% EtOAc in hexane gradient) provided 1.41 g of S4-9 (89%) as a waxy white solid: 1H NMR (400 MHz, CDCl3) δ 7.48-7.35 (m, 7H), 7.29-7.23 (m, 1H), 7.10-7.03 (m, 2H), 5.20 (s, 2H), 4.94-4.86 (m, 4H), 2.64-2.58 (m, 3H); MS (ESI) m/z 481.31, 483.30 (M+H).
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- To a solution of S4-9 (862 mg, 1.78 mmol, 1 eq) in 1,2-dimethoxyethane (10 mL) was added DIEA (930 μL, 5.34 mmol, 3 eq) and isopropylamine (152 μL, 1.78 mmol, 1 eq). The reaction was sealed and heated to 110° C. for 2.5 h. The solution was cooled and another 85 μL isopropylamine (0.99 mmol, 0.55 eq) was added and the reaction replaced in the heating bath. After an additional 15 h, the solution was concentrated under reduced pressure. Purification of the resulting oil via flash column chromatography on silica gel (
Biotage 100 g, 5 to 40% EtOAc in hexanes gradient) provided 696 mg of S4-10-1 (83%) as a white solid: 1H NMR (400 MHz, CDCl3) δ 7.42-7.29 (m, 7H), 7.23-7.19 (m, 1H), 7.00-6.96 (m, 2H), 5.10 (s, 2H), 4.13 (s, 2H), 4.02 (s, 2H), 2.81-2.72 (m, 1H), 2.53-2.48 (m, 3H), 1.17 (d, J=6.1 Hz, 6H): MS (ESI) m/z 468.39 (M−H). - The following compounds were prepared from S4-9 and the corresponding amines by methods similar to those described for S4-10-1.
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- 1H NMR (400 MHz, CDCl3) δ 7.45-7.32 (m, 7H), 7.28-7.21 (m, 1H), 5.13 (s, 2H), 4.16 (m, 2H), 4.05 (s, 2H), 2.65-2.60 (s, 1H), 2.53 (s, 3H), 1.75-1.62 (m, 1H), 1.51-1.40 (m, 1H), 1.14 (d, J=6.7 Hz, 3H), 0.96 (t, J=7.3 Hz, 3H): MS (ESI) m/z 482.47 (M−H).
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- 1H NMR (400 MHz, CDCl3) δ 7.42-7.31 (m, 7H), 7.29-7.21 (m, 1H), 7.03-6.98 (m, 2H), 5.13 (s, 2H), 4.15 (s, 2H), 4.05 (s, 2H), 2.66-2.59 (m, 1H), 2.53 (s, 3H), 1.75-1.62 (m, 1H), 1.51-1.40 (m, 1H), 1.14 (d, J=6.7 Hz, 3H), 0.96 (t, J=7.3 Hz, 3H); MS (ESI) m/z 482.48 (M−H).
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- 1H NMR (400 MHz, CDCl3) δ 7.42-7.31 (m, 7H), 7.29-7.19 (m, 1H), 7.02-6.96 (m, 2H), 5.10 (s, 2H), 4.20 (s, 2H), 4.07 (s, 2H), 2.51 (s, 3H), 1.17 (s, 9H); MS (ESI) m/z 482.48 (M−H).
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- 1H NMR (400 MHz, CDCl3) δ 7.45-7.31 (m, 7H), 7.28-7.19 (m, 1H), 7.02-6.96 (m, 2H), 5.13 (s, 2H), 4.25 (s, 2H), 4.19 (s, 2H), 2.53 (s, 3H), 2.07-1.98 (m, 1H), 0.60-0.50 (m, 4H); MS (ESI) m/z 466.43 (M−H).
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- 1H NMR (400 MHz, CDCl3) δ 7.45-7.31 (m, 7H), 7.28-7.21 (m, 1H), 7.02-6.97 (m, 2H), 5.12 (s, 2H), 4.11 (s, 2H), 4.03 (s, 2H), 2.68 (t, J=8.6 Hz, 2H), 2.53 (s, 3H), 1.65-1.55 (m, 2H), 0.99 (t, J=7.3 Hz, 3H); MS (ESI) m/z 481.28 (M−H).
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- BBr3 (1.0 M solution in CH2Cl2, 28.0 mL, 28.0 mmol) was added to a solution of compound S3-5 (8.98 g, 28.0 mmol) in CH2Cl2 (100 mL) at −78° C. The resulting reaction mixture was stirred at −78° C. for 20 min and at 0° C. for 15 min. NaHCO3 (saturated, aqueous solution, 120 mL) was added slowly. The resulting mixture was stirred at rt for 20 min, and the CH2Cl2 was evaporated. The residue was extracted with ethyl acetate (250 mL), and the combined extracts were dried over MgSO4, filtered, and concentrated under reduced pressure. The material was purified by recrystallization from EtOAc/Hexanes to give 6.76 g of the desired product S5-1 as a white solid. The mother liquor was concentrated and purified by column chromatography (2-10% ethyl acetate in hexanes gradient) to afford an additional 973 mg of product (90% combined yield). 1H NMR (400 MHz, CDCl3) δ 11.13 (s, 1H), 7.47-7.43 (m, 2H), 7.33-7.29 (m, 1H), 7.19-7.16 (m, 2H), 7.08 (d, J=1.8 Hz, 1H), 6.96 (d, J=1.8 Hz, 1H), 2.66 (s, 3H); MS (ESI) m/z 305.05, 307.05 (M−H).
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- A solution of PhI(OAc)2 (3.77 g, 11.72 mmol) in Methanol (20 mL) was added slowly to a solution of S5-1 (1.71 g, 5.58 mmol) in a mixture of Methanol (30 mL) and 1,4-dioxane (10 mL) at 0° C. The reaction mixture was stirred at rt for 17 h. Acetic acid (6 mL) was added to the reaction mixture. Zinc dust (1.09 g, 16.74 mmol) was added (exothermic), and the reaction mixture was stirred at rt for 20 min. The reaction mixture was filtered through a pad of Celite, and the Celite was washed thoroughly with EtOAc (100 mL). The filtrate was concentrated under reduced pressure. The residue was partitioned between EtOAc (120 mL) and sat. NaHCO3/brine solution. The organic layer was separated and dried (MgSO4). The dried solution was filtered, and the filtrate was concentrated. The residue was purified by flash-column chromatography (0-4% ethyl acetate-hexanes gradient) to afford 763 mg (41%) of the desired product S5-2. 1H NMR (400 MHz, CDCl3) δ 10.70 (s, 1H), 7.47-7.43 (m, 2H), 7.33-7.30 (m, 1H), 7.20-7.17 (m, 2H), 7.16 (s, 1H), 3.75 (s, 3H), 2.67 (s, 3H); MS (ESI) m/z 335.11, 337.14 (M−H).
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- Di-tert-butyl dicarbonate (543 mg, 2.49 mmol) and 4-N,N-dimethylaminopyridine (28 mg, 0.226 mmol) were added to a solution of S5-2 (763 mg, 2.26 mmol) in CH2Cl2 (20 mL). The resulting mixture was stirred for 20 min at rt and was concentrated under reduced pressure. The residue was purified by flash-column chromatography (0-5% ethyl acetate-hexanes gradient) to afford 783 mg (79%) of compound S5-3 as a white solid. 1H NMR (400 MHz, CDCl3) δ 7.45-7.41 (m, 2H), 7.38 (s, 1H), 7.30-7.26 (m, 1H), 7.24-7.22 (m, 2H), 3.81 (s, 3H), 2.47 (s, 3H), 1.43 (s, 9H); MS (ESI) m/z 435.14, 437.15 (M−H).
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- Isopropylmagnesium chloride/lithium chloride (Chemetall Foote Corporation, 1.2 M solution in THF, 0.547 mL, 0.657 mmol) was added dropwise to a solution of compound S5-3 (143.6 mg, 0.328 mmol) in THF (3.3 mL) at 0° C. The resulting yellow reaction mixture was then stirred at 0° C. for 1 h. DMF (0.127 mL, 1.64 mmol) was added, and the resulting mixture was stirred at 0° C. for 10 min and then at rt for 20 min. Saturated, aqueous NH4Cl and brine were added. The resulting mixture was extracted with EtOAc (50 mL), and the organics were dried (MgSO4), filtered, and concentrated under reduced pressure. The crude product S5-4 was used directly in the next step. 1H NMR (400 MHz, CDCl3) δ 10.38 (s, 1H), 7.61 (s, 1H), 7.46-7.42 (m, 2H), 7.32-7.28 (m, 1H), 7.26-7.24 (m, 2H), 3.91 (s, 3H), 2.46 (s, 3H), 1.45 (s, 9H); MS (ESI) m/z 385.24 (M−H).
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- Compound S5-4 (3.09 g, 8 mmol) was dissolved in dry dichloromethane (20 mL). TFA (10 mL) was slowly added at 0° C. The solution was stirred at 10° C. for 1 h. LC-MS analysis showed the complete consumption of starting material. The reaction mixture was concentrated under reduced pressure. The material was dissolved in acetic acid (30 mL) and sodium acetate (1.31 g, 16.0 mmol) was added. Bromine (0.49 mL, 9.6 mmol) was added via syringe at 10° C. After stirring at rt for 10 min, LC/MS indicated that the starting material was consumed. Most of the acetic acid was removed under reduced pressure. The material was diluted with EtOAc, was washed with water (3×50 mL) and brine, was dried over sodium sulfate, filtered, and concentrated under reduced pressure. This gave 3.23 g (110% crude yield) of compound S5-5 as an orange oil. MS (ESI) m/z 363.19, 365.21 (M−H).
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- Potassium carbonate (2.21 g, 16.0 mmol) was added to a solution of compound S5-5 (3.23 g, 8.0 mmol) in DMF (20 mL), and the reaction mixture was cooled to 0° C. in an ice-bath. Benzyl bromide (1.14 mL, 9.6 mmol) was added dropwise. After 1 hour, LC/MS indicated that the starting material was completely consumed. The reaction mixture was diluted with EtOAc (100 mL), was washed with water and brine, and was dried over sodium sulfate, filtered, and concentrated under reduced pressure. The material was dissolved in Methanol (50 mL) and was cooled to 0° C. for the addition of NaBH4 (0.355 g, 9.6 mmol). The reaction was stirred at 0° C. for 30 min at which point LC/MS indicated that the starting material was completely consumed. The reaction was quenched with water, and the resulting mixture was extracted with EtOAc. The combined extracts were dried (sodium sulfate) and concentrated under reduced pressure. Flash chromatography on silica gel (10:1 to 4:1 hexanes/EtOAc) yielded 3.52 g (96%, 4 steps) of S5-6. 1H NMR (400 MHz, CDCl3) δ 7.52-7.48 (m, 2H), 7.40-7.32 (m, 5H), 7.27-7.22 (m, 1H), 7.07-7.03 (m, 2H), 5.10 (s, 2H), 4.90 (s, 2H), 3.85 (s, 3H), 2.37 (s, 3H); MS (ESI) m/z 479.26, 481.25 (M+Na).
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- Isopropylmagnesium chloride/lithium chloride (Chemetall Foote Corporation, 1.2 M solution in THF, 31.6 mL, 37.9 mmol) was added to a solution of compound S5-6 (3.47 g, 7.58 mmol) in THF (100 mL) under nitrogen atmosphere at 0° C. The resulting solution was warmed to rt and was stirred for 30 min. After the solution was cooled to 0° C., DMF (5.84 mL, 75.8 mmol) was added slowly via syringe. The reaction was warmed to rt over 1 hour. The reaction mixture was diluted with ethyl acetate (200 mL), was washed with water and brine, and was dried over sodium sulfate, filtered, and concentrated under reduced pressure. The material was dissolved in Methanol (50 mL) and was cooled to 0° C. NaBH4 (0.42 g, 11.4 mmol) was added, and the reaction mixture was stirred at 0° C. for 30 min. The reaction was quenched with water and was extracted with EtOAc. The combined EtOAc extracts were dried (sodium sulfate) and concentrated under reduced pressure to give 3.02 g of crude S5-7. The material was used without further purification. MS (ESI) m/z 407.46 (M−H).
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- Compound S5-7 (961 mg, 2.35 mmol) was partially dissolved in 1,2-dichloroethane (10 mL) and tetrabutylammonium chloride (64.0 mg, 0.23 mmol) was added. Thionyl chloride (0.683 mL, 9.41 mmol) was added slowly, forming a clear solution. The reaction mixture was heated to 80° C. in a sealed tube and was stirred for 1 hour 30 min. The reaction mixture was concentrated under reduced pressure and was purified by flash chromatography on silica gel (50:1 to 20:1 hexanes/EtOAc). This gave 1.40 g (80%, 3 steps) of compound S5-8. 1H NMR (400 MHz, CDCl3) δ 7.50-7.43 (m, 2H), 7.43-7.32 (m, 5H), 7.29-7.22 (m, 1H), 7.11-7.06 (m, 2H), 5.15 (s, 2H), 4.89 (s, 2H), 4.86 (s, 2H), 3.89 (d, J=0.72 Hz, 3H), 2.43 (d, J=0.92 Hz, 3H); MS (ESI) m/z 467.35 (M+Na).
-
- Diisopropylethylamine (2.39 mL, 13.73 mmol) and t-amylamine (0.294 mL, 2.52 mmol) were added to a solution of compound $5-8 (1.02 g, 2.29 mmol) in 1,2-dimethoxyethane (15 mL). The reaction mixture was heated to 110° C. overnight in a sealed tube. The reaction mixture was concentrated under reduced pressure and was purified by flash chromatography on silica gel (20:1 to 1:1 hexanes/EtOAc), yielding 623 mg (59%) of compound S5-9-1. 1H NMR (400 MHz, CDCl3) δ 7.42-7.38 (m, 2H), 7.37-7.30 (m, 5H), 7.23-7.19 (m, 1H), 7.06-7.02 (m, 2H), 5.02 (s, 2H), 4.10 (s, 2H), 4.03 (s, 2H), 3.76 (s, 3H), 2.34 (s, 3H), 1.86 (q, J=7.3 Hz, 2H), 1.08 (s, 6H), 0.91 (t, J=7.3 Hz, 3H); MS (ESI) m/z 460.45 (M+H).
- The following compounds were prepared from S5-8 and the corresponding amines by methods similar to those described for S5-9-1.
-
- Rf=0.20 in 33% EtOAc in Hexane; MS (ESI) m/z 432.48 (M+H).
-
- MS (ESI) m/z 446.45 (M+H).
-
- MS (ESI) m/z 446.48 (M+H).
-
- Rf=0.25 in 33% EtOAc in Hexane; 1H NMR (400 MHz, CDCl3) δ 7.42-7.38 (m, 2H), 7.37-7.28 (m, 5H), 7.23-7.19 (m, 1H), 7.06-7.01 (m, 2H), 5.02 (s, 2H), 4.10 (s, 2H), 4.04 (s, 2H), 3.75 (s, 3H), 2.34 (s, 3H), 1.16 (s, 9H); MS (ESI) m/z 446.48 (M+H).
-
- MS (ESI) m/z 432.48 (M+H).
-
- Rf=0.31 in 33% EtOAc in Hexane; MS (ESI) m/z 472.51 (M+H).
-
- To a solution of S3-13-2 (221 mg, 0.491 mmol, 1 eq) in dioxane:methanol:0.5 N HCl in methanol (1:1:1, 4 mL) was added palladium on carbon (10%, 146 mg). The vessel was evacuated and back-filled with hydrogen gas three times, then degassed with bubbling hydrogen for 4 min, and stirred at ambient temperature under a hydrogen balloon. After 16.5 h, another 80 mg palladium catalyst was added, and the evacuation and degassing procedure repeated. After an additional 4 h, the reaction suspension was filtered through Celite to remove the palladium catalyst and concentrated under reduced pressure. Purification of the resulting crude oil via flash column chromatography on silica gel (Silicycle, 25 g, 1 to 8% methanol in dichloromethane gradient) provided 112.6 mg of compound S6-1-1 (70%) as a waxy white solid: 1H NMR (400 MHz, CDCl3) δ 11.42-11.10 (brs, 1H), 7.37 (t, J=8.3 Hz, 2H), 7.28-7.20 (m, 1H), 7.11 (d, J=7.4 Hz, 2H), 6.66 (s, 1H), 4.43-4.32 (m, 4H), 2.61 (s, 3H), 1.35 (s, 9H); MS (ESI) m/z 326.94 (M+H).
-
- To a solution of S6-1-1 (113 mg, 0.346 mmol, 1 eq) in trifluoroacetic acid (4 mL) at 0° C. was added potassium nitrate (67.4 mg, 0.667 mmol, 1.92 eq). The mixture was allowed to warm to ambient temperature at which point the solution turned orange. After 30 min, the solvent was removed under reduced pressure. To a solution of this crude oil in methanol:THF (1:1, 2.5 mL) was added formaldehyde (37% aq, 64 μL, 0.87 mmol, 2.5 eq) and palladium on carbon (10%, 101 mg). The reaction vessel was evacuated and back-filled with hydrogen gas three times, and the solution stirred at ambient temperature under a hydrogen balloon. After 18 h, the reaction mixture was filtered through Celite and concentrated under reduced pressure. This crude oil was dissolved in dimethylformamide (2 mL), and diisopropylethylamine (241 μL, 1.38 mmol, 4 eq), di-tert-butylcarbonate (226 mg, 1.04 mmol, 3 eq) and a catalytic amount of dimethylaminopyridine were added. The reaction mixture was placed under nitrogen and stirred at ambient temperature. After 2 h, the reaction solution was diluted with saturated aqueous sodium bicarbonate (10 mL) and water (30 mL) and extracted with EtOAc (2×30 mL). The combined organic extracts were washed with brine, dried (Na2SO4), filtered, and concentrated under reduced pressure. Purification of the resulting crude oil via flash column chromatography on silica gel (Silicycle, 12 g, 5 to 30% EtOAc in hexane gradient) provided 72 mg of S6-2-1 (44%) as a white solid: 1H NMR (400 MHz, CDCl3) δ 7.45-7.38 (m, 2H), 7.29-7.20 (m, 3H), 4.15 (s, 2H), 3.93 (s, 3H), 2.73 (s, 6H), 2.40 (s, 3H), 1.42 (s, 9H), 1.19 (s, 9H); MS (ESI) m/z 467.47 (M−H).
- The following compounds were prepared by methods similar to those described for S6-2-1.
-
- 1H NMR (400 MHz, CDCl3) δ 7.45-7.35 (m, 2H), 7.28-7.20 (m, 3H), 4.08 (s, 2H), 3.86 (s, 2H), 2.88-2.80 (7H), 2.40 (s, 3H), 1.41 (s, 9H), 1.19 (d, J=4.9 Hz, 6H); MS (ESI) m/z 455.01 (M+H).
-
- 1H NMR (400 MHz, CDCl3) δ 7.45-7.38 (m, 2H), 7.29-7.20 (m, 3H), 4.09 (s, 2H), 3.87 (s, 2H), 2.73 (s, 6H), 2.64-2.54 (m, 1H), 2.40 (s, 3H), 1.78-1.60 (m, 2H), 1.42 (s, 9H), 1.14 (d, J=8.0 Hz, 3H), 0.94 (t, J=7.6 Hz, 3H); MS (ESI) m/z 467.51 (M−H).
-
- 1H NMR (400 MHz, CDCl3) δ 7.45-7.38 (m, 2H), 7.29-7.20 (m, 3H), 4.09 (s, 2H), 3.86 (s, 2H), 2.73 (s, 6H), 2.64-2.54 (m, 1H), 2.39 (s, 3H), 1.78-1.60 (m, 2H), 1.42 (s, 9H), 1.14 (d, J=8.0 Hz, 3H), 0.94 (t, J=7.6 Hz, 3H); MS (ESI) m/z 467.55 (M−H).
-
- 1H NMR (400 MHz, CDCl3) δ 7.49-7.35 (m, 2H), 7.29-7.20 (m, 3H), 4.13 (s, 2H), 3.91 (s, 2H), 2.73 (s, 6H), 2.40 (s, 3H), 1.59-1.48 (m, 2H), 1.42 (s, 9H), 1.09 (s, 6H), 0.92 (t, J=7.3 Hz, 3H); MS (ESI) m/z 481.48 (M−H).
-
- Lithium diisopropylamide was prepared at −40° C. from n-butyllithium (2.5 M solution in hexane, 0.118 mL, 0.294 mmol) and diisopropylamine (0.0416 mL, 0.294 mmol) in THF (5 mL). The reaction mixture was cooled to −78° C. and TMEDA (0.114 mL, 0.762 mmol) was added followed by the dropwise addition of a solution of compound S1-11-1 (66.5 mg, 0.153 mmol) in THF (2 mL). This resulted in an orange-red colored solution. After 5 min, a solution of enone S7-1 (61.3 mg, 0.127 mmol) in THF (1 mL) was added. After complete addition, the reaction mixture was allowed to warm to −20° C. over 1 h. The reaction was quenched by the addition of ammonium chloride (saturated, aqueous solution) and was extracted with EtOAc (2×). The combined extracts were dried over Na2SO4, filtered, and concentrated under reduced pressure. The material was purified on a Waters Autopurification system equipped with a Sunfire Prep C18 OBD column [5 μm, 19×50 mm; flow rate, 20 mL/min; Solvent A: H2O with 0.1% HCO2H; Solvent B: CH3CN with 0.1% HCO2H; gradient: 20→100% B; mass-directed fraction collection], yielding 17.2 mg (17%) of the desired product S7-2-1 as a yellow solid. 1H NMR (400 MHz, CDCl3) δ 16.0 (s, 1H), 7.52-7.44 (m, 2H), 7.42-7.26 (m, 8H), 5.35 (s, 2H), 4.92 (s, 2H), 4.32-4.20 (m, 2H), 4.06-3.90 (m, 3H), 3.21 (dd, J=15.6, 4.6 Hz, 1H), 3.03-2.91 (m, 1H), 2.58-2.36 (m, 9H), 2.13 (d, J=14.6 Hz, 1H), 1.18 (s, 9H), 0.82 (s, 9H), 0.27 (s, 3H), 0.12 (s, 3H); MS (ESI) m/z 822.51 (M+H).
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- Aqueous HF (0.4 mL, 48%) was added to a solution of S7-2-1 (17.2 mg, 0.0209 mmol) in 1,4-dioxane (0.8 mL) in a plastic vial. After 4 h, the reaction mixture was poured into a solution of K2HPO4 (4.8 g) in water (15 mL). The mixture was extracted with EtOAc (3×). The combined EtOAc extracts were dried over Na2SO4, filtered and concentrated under reduced pressure. The material was dissolved in Methanol (1 mL), 1,4-dioxane (1 mL) and 0.5 M HCl in Methanol (0.5 mL), and palladium on carbon (Degussa, 10 wt %, ˜5 mg) was added. An atmosphere of hydrogen was introduced, and the reaction mixture was stirred for 2 h. The reaction mixture was filtered through Celite, and the filtrate was concentrated under reduced pressure. The material was purified on a Waters Autopurification system equipped with a Phenomenex Polymerx 10μ RP 100A column [10 μm, 30×21.20 mm; flow rate, 20 mL/min; Solvent A: 0.05N HCl in water; Solvent B: CH3CN; gradient: 0→70% B; mass-directed fraction collection]. Fractions with the desired MW were collected and freeze-dried to yield 8.7 mg (69%, 2 steps) of the desired
product Compound 102 as a yellow solid. 1H NMR (400 MHz, CD3OD with 1 drop DCl) δ 4.85 (q, J=15.1 Hz, 2H), 4.73 (s, 2H), 4.16 (s, 1H), 3.22-2.95 (m, 9H), 2.36-2.24 (m, 2H), 1.72-1.56 (m, 1H), 1.53 (s, 9H); MS (ESI) m/z 530.35 (M+H). - The following compounds were prepared by methods similar to that for
Compound 102, substituting the appropriate isoindoline S1-11, S2-1, S3-13, 54-10, S5-9, or S6-2 for S1-11-1. -
- Prepared from S2-1-1, yellow solid: 1H NMR (400 MHz, CD3OD with 1 drop DCl) δ 5.17 (d, J=14.7 Hz, 1H), 5.08 (d, J=14.2 Hz, 1H), 4.81 (d, J=14.7 Hz, 1H), 4.67 (d, J=14.2 Hz, 1H), 4.15 (s, 1H), 3.52 (s, 2H), 3.34-2.95 (m, 9H), 2.38-2.22 (m, 2H), 1.61 (q, J=12.5 Hz, 1H), 1.19 (s, 9H); MS (ESI) m/z 544.35 (M+H).
-
- Prepared from S3-13-1, yellow solid: 1H NMR (400 MHz, CD3OD with 1 drop DCl) δ 4.94-4.67 (m, 4H), 4.18 (s, 1H), 3.18-2.95 (m, 9H), 2.40-2.26 (m, 2H), 1.91 (q, J=7.3 Hz, 2H), 1.63 (q, J=12.4 Hz, 1H), 1.48 (s, 6H), 1.08 (t, J=7.3 Hz, 3H); MS (ESI) m/z 560.26, 562.27 (M+H).
-
- Prepared from S3-13-2, yellow solid: 1H NMR (400 MHz, CD3OD with 1 drop DCl) δ 4.90-4.73 (m, 4H), 4.16 (s, 1H), 3.17-2.95 (m, 9H), 2.41-2.24 (m, 2H), 1.68-1.56 (m, 1H), 1.53 (s, 9H); MS (ESI) m/z 546.20, 548.29 (M+H).
-
- Prepared from S3-13-3, yellow solid: 1H NMR (400 MHz, CD3OD with 1 drop DCl) δ 5.05-4.95 (m, 2H), 4.71 (d, J=15.1 Hz, 1H), 4.62 (d, J=14.2 Hz, 1H), 4.16 (s, 1H), 3.50-3.42 (m, 2H), 3.17-2.94 (m, 9H), 2.42-2.24 (m, 2H), 1.94-1.82 (m, 2H), 1.63 (q, J=12.8 Hz, 1H), 1.07 (t, J=7.3 Hz, 3H); MS (ESI) m/z 532.23, 534.20 (M+H).
-
- Prepared from S3-13-4, yellow solid: 1H NMR (400 MHz, CD3OD with 1 drop DCl) δ 4.98-4.86 (m, 2H), 4.78 (d, J=16.0 Hz, 1H), 4.70 (d, J=14.2 Hz, 1H), 4.15 (s, 1H), 3.70-3.57 (m, 1H), 3.17-2.92 (m, 9H), 2.43-2.24 (m, 2H), 2.08-1.96 (m, 1H), 1.79-1.56 (m, 2H), 1.50-1.42 (m, 3H), 1.08 (t, J=7.3 Hz, 3H); MS (ESI) m/z 546.21, 548.23 (M+H).
-
- Prepared from S3-13-5, yellow solid: 1H NMR (400 MHz, CD3OD with 1 drop DCl) δ 4.98-4.88 (m, 2H), 4.84-4.64 (m, 2H), 4.15 (s, 1H), 3.70-3.57 (m, 1H), 3.15-2.94 (m, 9H), 2.43-2.24 (m, 2H), 2.09-1.96 (m, 1H), 1.77-1.55 (m, 2H), 1.45 (d, J=6.4 Hz, 3H), 1.07 (t, J=7.3 Hz, 3H); MS (ESI) m/z 546.48, 548.48 (M+H).
-
- Prepared from S5-9-1, yellow solid: 1H NMR (400 MHz, CD3OD) δ 4.87 (s, 2H), 4.71 (s, 2H), 4.08 (s, 1H), 3.76 (d, J=4.1 Hz, 3H), 3.27-3.19 (m, 1H), 3.03 (s, 3H), 2.95 (s, 3H), 3.06-2.92 (m, 2H), 2.37-2.18 (m, 2H), 1.88 (q, J=7.3 Hz, 2H), 1.70-1.58 (m, 1H), 1.47 (s, 6H), 1.08 (t, J=7.3 Hz, 3H); MS (ESI) m/z 556.53 (M+H).
-
- Prepared from S5-9-2: 1H NMR (400 MHz, CD3OD) δ 4.87 (s, 2H), 4.69 (s, 2H), 4.09 (s, 1H), 3.76 (d, J=3.2 Hz, 3H), 3.27-3.19 (m, 1H), 3.04 (s, 3H), 2.96 (s, 3H), 3.10-2.91 (m, 4H), 2.36-2.18 (m, 2H), 2.09-1.97 (m, 1H), 1.77-1.57 (m, 2H), 1.08 (t, J=7.3 Hz, 3H); MS (ESI) m/z 528.51 (M+H).
-
- Prepared from S5-9-3: 1H NMR (400 MHz, CD3OD) δ 5.00-4.76 (m, 2H), 4.59 (d, J=14.2 Hz, 1H), 4.12 (d, J=3.3 Hz, 1H), 3.76 (d, J=6.0 Hz, 1H), 3.66-3.55 (m, 1H), 3.28-3.20 (m, 1H), 3.10-2.91 (m, 9H), 2.35-2.19 (m, 2H), 2.09-1.97 (m, 1H), 1.77-1.57 (m, 2H), 1.46 (d, J=6.4 Hz, 3H), 1.08 (t, J=7.1 Hz, 3H); MS (ESI) m/z 542.54 (M+H).
-
- Prepared from S5-9-4: 1H NMR (400 MHz, CD3OD) δ 5.00-4.76 (m, 2H), 4.58 (d, J=14.2 Hz, 1H), 4.10 (s, 1H), 3.75 (d, J=6.0 Hz, 1H), 3.64-3.55 (m, 1H), 3.27-3.19 (m, 1H), 3.09-2.90 (m, 9H), 2.35-2.19 (m, 2H), 2.09-1.95 (m, 1H), 1.77-1.57 (m, 2H), 1.45 (dd, J=6.4, 3.7 Hz, 3H), 1.07 (t, J=7.2 Hz, 3H); MS (ESI) m/z 542.52 (M+H).
-
- Prepared from S5-9-5: 1H NMR (400 MHz, CD3OD) δ 4.87 (s, 2H), 4.70 (s, 2H), 4.09 (s, 1H), 3.76 (d, J=3.2 Hz, 3H), 3.27-3.19 (m, 1H), 3.04 (s, 3H), 2.96 (s, 3H), 3.10-2.91 (m, 2H), 2.36-2.18 (m, 2H), 1.70-1.58 (m, 1H), 1.53 (s, 9H); MS (ESI) m/z 542.56 (M+H).
-
- Prepared from S1-11-2: 1H NMR (400 MHz, CD3OD) δ 4.99-4.94 (m, 1H), 4.88-4.82 (m, 1H), 4.10 (s, 1H), 3.97-3.92 (m, 1H), 3.90-3.85 (m, 1H), 3.25-3.16 (m, 1H), 3.15-2.92 (m, 11H), 2.41-2.28 (m, 1H), 2.28-2.17 (m, 1H), 1.72-1.59 (m, 1H); MS (ESI) m/z 520.24 (M+H).
-
- Prepared from S1-11-3: 1H NMR (400 MHz, CD3OD) δ 5.07-4.92 (m, 1H), 4.80-4.55 (m, 1H), 4.10 (s, 1H), 3.85-3.75 (m, 2H), 3.75-3.65 (m, 2H), 3.46 (s, 3H), 3.23-3.14 (m, 1H), 3.13-2.92 (m, 9H), 2.39-2.19 (m, 2H), 1.70-1.56 (m, 1H); MS (ESI) m/z 532.24 (M+H).
-
- Prepared from S1-11-4: 1H NMR (400 MHz, CD3OD) δ 4.78-4.68 (m, 1H), 4.63-4.51 (m, 1H), 4.08 (s, 1H), 3.38-3.34 (m, 2H), 3.23-3.14 (m, 1H), 3.14-2.89 (m, 10H), 2.41-2.28 (m, 1H), 2.25-2.13 (m, 2H), 1.72-1.58 (m, 1H), 1.11 (d, J=6.7 Hz, 6H); MS (ESI) m/z 530.19 (M+H).
-
- Prepared from S1-11-5: 1H NMR (400 MHz, CD3OD) δ 5.08-4.70 (m, 3H), 4.69-4.58 (m, 1H), 4.37-4.27 (m, 1H), 4.09 (s, 1H), 4.01-3.92 (m, 1H), 3.91-3.82 (m, 1H), 3.67-3.57 (m, 1H), 3.53-3.43 (m, 1H), 3.23-3.14 (m, 1H), 3.14-2.92 (m, 8H), 2.40-2.27 (m, 1H), 2.27-2.13 (m, 2H), 2.05-1.92 (m, 2H), 1.72-1.57 (m, 2H); MS (ESI) m/z 558.26 (M+H).
-
- Prepared from S1-11-6: 1H NMR (400 MHz, CD3OD) δ 5.07-4.70 (m, 3H), 4.69-4.58 (m, 1H), 4.37-4.27 (m, 1H), 4.09 (s, 1H), 4.01-3.92 (m, 1H), 3.91-3.82 (m, 1H), 3.67-3.57 (m, 1H), 3.53-3.43 (m, 1H), 3.23-3.14 (m, 1H), 3.14-2.92 (m, 8H), 2.40-2.27 (m, 1H), 2.27-2.13 (m, 2H), 2.05-1.92 (m, 2H), 1.72-1.57 (m, 2H); MS (ESI) m/z 558.21 (M+H).
-
- Prepared from S1-11-7: 1H NMR (400 MHz, CD3OD) δ 5.05-4.81 (m, 2H), 4.80-4.70 (m, 1H), 4.68-4.55 (m, 1H), 4.08 (s, 1H), 3.85-3.72 (m, 1H), 3.24-3.13 (m, 1H), 3.13-2.90 (m, 8H), 2.40-2.26 (m, 1H), 2.25-2.16 (m, 1H), 1.71-1.56 (m, 1H), 1.47 (d, J=6.7 Hz, 6H); MS (ESI) m/z 516.32 (M+H).
-
- Prepared from S1-11-8: 1H NMR (400 MHz, CD3OD) δ 5.10-4.74 (m, 3H), 4.70-4.58 (m, 1H), 4.09 (s, 1H), 3.69-3.54 (m, 1H), 3.24-2.88 (m, 9H), 2.40-2.28 (m, 1H), 2.28-2.19 (m, 1H), 2.07-1.94 (m, 1H), 1.77-1.57 (m, 2H), 1.45 (d, J=6.1 Hz, 3H), 1.08 (t, J=7.9 Hz, 3H); MS (ESI) m/z 530.27 (M+H).
-
- Prepared from S1-11-9: 1H NMR (400 MHz, CD3OD) δ 5.03-4.74 (m, 3H), 4.68-4.58 (m, 1H), 4.10 (s, 1H), 3.67-3.55 (m, 1H), 3.23-2.90 (m, 9H), 2.37-2.18 (m, 2H), 2.07-1.94 (m, 1H), 1.76-1.56 (m, 2H), 1.44 (d, J=6.1 Hz, 3H), 1.07 (t, J=7.3 Hz, 3H); MS (ESI) m/z 530.26 (M+H).
-
- Prepared from S1-11-10: 1H NMR (400 MHz, CD3OD) δ 5.05-4.73 (m, 3H), 4.68-4.58 (m, 1H), 4.09 (s, 1H), 3.66-3.54 (m, 1H), 3.23-2.91 (m, 9H), 2.38-2.28 (m, 1H), 2.28-2.19 (m, 1H), 2.07-1.94 (m, 1H), 1.75-1.57 (m, 2H), 1.44 (d, J=6.1 Hz, 3H), 1.07 (t, J=7.3 Hz, 3H); MS (ESI) m/z 530.26 (M+H).
-
- Prepared from S1-11-11: 1H NMR (400 MHz, CD3OD) δ 5.08-4.73 (m, 3H), 4.72-4.52 (m, 1H), 4.09 (s, 1H), 3.67-3.55 (m, 1H), 3.23-2.90 (m, 9H), 2.44-2.27 (m, 2H), 2.27-2.18 (m, 1H), 1.70-1.57 (m, 1H), 1.37 (d, J=6.7 Hz, 3H), 1.09 (d, J=6.7 Hz, 3H), 1.07-1.01 (m, 3H); MS (ESI) m/z 544.32 (M+H).
-
- Prepared from S1-11-12: 1H NMR (400 MHz, CD3OD) δ 5.10-4.73 (m, 3H), 4.72-4.58 (m, 1H), 4.09 (s, 1H), 3.66-3.56 (m, 1H), 3.24-2.87 (m, 9H), 2.45-2.29 (m, 2H), 2.27-2.19 (m, 1H), 1.71-1.58 (m, 1H), 1.38 (d, J=6.7 Hz, 3H), 1.10 (d, J=7.3 Hz, 3H), 1.05 (d. J=6.7 Hz, 3H); MS (ESI) m/z 544.31 (M+H).
-
- Prepared from S1-11-13: 1H NMR (400 MHz, CD3OD) δ 5.10-4.91 (m, 2H), 4.78-4.69 (m, 1H), 4.65-4.53 (m, 1H), 4.10 (s, 1H), 4.03-3.90 (m, 1H), 3.24-2.90 (m, 9H), 2.39-2.18 (m, 4H), 1.98-1.70 (m, 6H), 1.70-1.56 (m, 1H); MS (ESI) m/z 542.27 (M+H).
-
- Prepared from S1-11-14: 1H NMR (400 MHz, CD3OD) δ 5.15-5.43 (broad, 4H), 4.41-4.33 (m, 1H), 4.27-4.19 (m, 1H), 4.17-4.10 (m, 1H), 4.08 (s, 1H), 3.90-3.83 (m, 1H), 3.80-3.71 (m, 1H), 3.23-3.14 (m, 1H), 3.13-2.91 (m, 8H), 2.57-2.44 (m, 1H), 2.40-2.17 (m, 3H), 1.71-1.57 (m, 1H); MS (ESI) m/z 544.21 (M+H).
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- Prepared from S1-11-15: 1H NMR (400 MHz, CD3OD) δ 4.96-4.63 (m, 4H), 4.10 (s, 1H), 3.28-2.85 (m, 9H), 2.41-2.16 (m, 2H), 1.92-1.82 (m, 2H), 1.70-1.57 (m, 1H), 1.46 (s, 6H), 1.12-1.02 (m, 3H); MS (ESI) m/z 569.26 (M+H).
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- Prepared from S1-11-16: 1H NMR (400 MHz, CD3OD) δ 5.02-4.74 (m, 4H), 4.09 (s, 1H), 3.23-2.91 2.39-2.27 (m, 1H), 2.27-2.18 (m, 1H), 1.71-1.57 (m, 1H), 1.37 (s, 6H), 1.34-1.25 (m, 1H), 0.78-0.68 (m, 2H), 0.68-0.61 (m, 2H); MS (ESI) m/z, 556.36 (M+H).
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- Prepared from S1-11-17: 1H NMR (400 MHz, CD3OD) δ 4.99-4.79 (m, 2H), 4.79-4.69 (m, 2H), 4.10 (s, 1H), 3.24-2.92 (m, 9H), 2.39-2.27 (m, 1H), 2.27-2.19 (m, 1H), 1.86 (s, 2H), 1.70-1.56 (m, 7H), 1.13 (s, 9H); MS (ESI) m/z 586.38 (M+H).
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- Prepared from S1-11-18: 1H NMR (400 MHz, CD3OD) δ 5.09-4.80 (m, 4H), 4.10 (s, 1H), 3.28-2.94 (m, 10H), 2.40-2.29 (m, 1H), 2.28-2.21 (m, 1H), 1.72-1.59 (m, 1H), 1.20-1.28 (m, 2H), 1.18-1.03 (m, 2H); MS (ESI) m/z 514.47 (M+H).
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- Prepared from S1-11-19: 1H NMR (400 MHz, CD3OD) δ 5.04-4.84 (m, 2H), 4.64-4.56 (m, 1H), 4.53-4.42 (m, 1H), 4.18-4.04 (m, 2H), 3.22-3.15 (m, 1H), 3.14-2.95 (m, 8H), 2.50-2.29 (m, 5H), 2.28-2.20 (m, 1H), 2.05-1.85 (m, 2H), 1.71-1.58 (m, 1H); MS (ESI) m/z 528.49 (M+H).
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- Prepared from S1-11-20: 1H NMR (400 MHz, CD3OD) δ 4.97-4.81 (m, 1H), 4.80-4.65 (m, 3H), 4.09 (s, 1H), 3.69 (s, 2H), 3.23-2.91 (m, 9H), 2.39-2.27 (m, 1H), 2.27-2.19 (m, 1H), 1.70-1.57 (m, 1H), 1.44 (s, 6H); MS (ESI) m/z 546.33 (M+H).
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- Prepared from S1-11-21: 1H NMR (400 MHz, CD3OD) δ 5.08-4.81 (m, 2H), 4.75-4.47 (m, 2H), 4.08 (s, 1H), 3.50-3.37 (m, 2H), 3.21-2.84 (m, 9H), 2.40-2.27 (m, 1H), 2.26-2.17 (m, 1H), 1.92-1.76 (m, 2H), 1.71-1.57 (m, 1H), 1.07 (t. J=7.3 Hz, 3H); MS (ESI) m/z 516.24 (M+H).
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- Prepared from S1-11-22: 1H NMR (400 MHz, CD3OD) δ 4.96-4.82 (m, 4H), 4.10 (s, 1H), 3.89 (m, 1H), 3.83 (m, 1H), 3.23-3.15 (m, 1H), 3.14-2.91 (m, 8H), 2.40-2.29 (m, 1H), 2.28-2.20 (m, 1H), 1.72-1.54 (m, 7H); MS (ESI) m/z 548.53 (M+H).
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- Prepared from S1-11-23: 1H NMR (400 MHz, CD3OD) δ 4.92-4.78 (m, 2H), 4.78-4.66 (m, 2H), 4.09 (s, 1H), 3.98-3.85 (m, 2H), 3.85-3.78 (m, 2H), 3.22-3.12 (m, 1H), 3.14-2.90 (m, 8H), 2.40-2.27 (m, 1H), 2.27-2.01 (m, 7H), 1.74-1.56 (m, 7H); MS (ESI) m/z 599.29 (M+H).
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- Prepared from S4-10-1: 1H NMR (400 MHz, CD3OD) δ 5.13-4.96 (m, 1H), 4.64-4.51 (m, 1H), 4.11 (s, 1H), 3.86-3.74 (m, 1H), 3.24-2.89 (m, 11H), 2.66-2.52 (m, 1H), 2.27-2.18 (m, 1H), 1.69-1.59 (m, 1H), 1.47 (s, 6H); MS (ESI) m/z 566.26 (M+H).
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- Prepared from S4-10-2: 1H NMR (400 MHz, CD3OD) δ 5.08-4.93 (m, 1H), 4.80-4.60 (m, 1H), 4.12 (s, 1H), 3.67-3.55 (m, 1H), 3.27-3.17 (m, 1H), 3.16-2.85 (m, 10H), 2.65-2.52 (m, 1H), 2.28-2.19 (m, 1H), 2.08-1.95 (m, 1H), 1.77-1.58 (m, 2H), 1.45 (d, J=6.7 Hz, 3H), 1.07 (t, J=7.6 Hz, 3H), MS (ESI) m/z 580.26 (M+H).
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- Prepared from S4-10-3: 1H NMR (400 MHz, CD3OD) δ 5.08-4.91 (m, 1H), 4.70-4.51 (m, 1H), 4.13 (s, 1H), 3.66-3.56 (m, 1H), 3.26-3.17 (m, 1H), 3.16-2.86 (m, 10H), 2.66-2.53 (m, 1H), 2.28-2.19 (m, 1H), 2.09-1.94 (m, 1H), 1.77-1.57 (m, 2H), 1.45 (d, J=6.1 Hz, 3H), 1.07 (t, J=7.3 Hz, 3H); MS (ESI) m/z 580.26 (M+H).
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- Prepared from S4-10-4: 1H NMR (400 MHz, CD3OD) δ 4.98-4.86 (m, 1H), 4.78-4.66 (m, 1H), 4.12 (s, 1H), 3.25-2.89 (m, 12H), 2.68-2.52 (m, 1H), 2.27-2.18 (m, 1H), 1.72-1.59 (m, 1H), 1.53 (s, 9H); MS (ESI) m/z 580.26 (M+H).
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- Prepared from S4-10-5: 1H NMR (400 MHz, CD3OD) δ 5.17-5.01 (m, 2H), 4.12 (s, 1H), 3.27-3.19 (2H), 3.16-2.84 (m, 10H), 2.66-2.54 (m, 1H), 2.27-2.19 (m, 1H), 1.72-1.59 (m, 1H), 1.20-1.13 (m, 2H), 1.09-1.02 (m, 2H); MS (ESI) m/z 564.17 (M+H).
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- Prepared from S4-10-6: 1H NMR (400 MHz, CD3OD) δ 5.20-5.07 (m, 1H), 4.58-4.47 (m, 1H), 4.13 (s, 1H), 3.51-3.38 (m, 2H), 3.28-3.17 (m, 1H), 3.16-2.90 (m, 10H), 2.67-2.51 (m, 1H), 2.28-2.19 (m, 1H), 1.94-1.80 (m, 2H), 1.72-1.59 (m, 1H), 1.08 (t, J=7.4 Hz, 3H); MS (ESI) m/z 566.26 (M+H).
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- Prepared from S6-2-1: 1H NMR (400 MHz, CD3OD) δ 5.16-4.96 (m, 2H), 4.78-4.62 (m, 2H), 4.16 (s, 1H), 3.28-2.92 (m, 15H), 2.61-2.40 (m, 1H), 2.36-2.27 (m, 1H), 1.75-1.53 (m, 10H); MS (ESI) m/z 555.27 (M+H).
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- Prepared from S6-2-2: 1H NMR (400 MHz, CD3OD) δ 5.19-5.03 (m, 1H), 4.60-4.46 (m, 1H), 4.13 (s, 1H), 3.88-3.75 (m, 1H), 3.13-2.82 (m, 17H), 2.48-2.21 (m, 2H), 1.73-1.59 (m, 1H), 1.57-1.44 (m, 6H); MS (ESI) m/z 541.24 (M+H).
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- Prepared from S6-2-3: 1H NMR (400 MHz, CD3OD) δ 5.10-4.96 (m, 1H), 4.58-4.46 (m, 1H), 4.10 (s, 1H), 3.68-3.55 (m, 1H), 3.10-2.68 (m, 18H), 2.40-2.18 (m, 1H), 2.11-1.98 (m, 1H), 1.78-1.57 (m, 2H), 1.46 (d, J=6.1 Hz, 3H), 1.09 (t, J=6.7 Hz, 3H); MS (ESI) m/z 555.33 (M+H).
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- Prepared from S6-2-4: 1H NMR (400 MHz, CD3OD) δ 5.14-4.96 (m, 1H), 4.58-4.44 (m, 1H), 4.16 (s, 1H), 3.66-3.54 (m, 1H), 3.10-2.69 (m, 18H), 2.38-2.19 (m, 1H), 2.14-1.99 (m, 1H), 1.76-1.57 (m, 1H), 1.53-1.40 (m, 3H), 1.08 (t, J=7.3 Hz, 3H); MS (ESI) m/z 555.39 (M+H).
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- Prepared from S6-2-5: 1H NMR (400 MHz, CD3OD) δ 5.12-4.98 (m, 2H), 4.71 (s, 2H), 4.16 (s, 1H), 3.25-2.91 (m, 15H), 2.61-2.38 (m, 1H), 2.35-2.25 (m, 1H), 1.99-1.89 (m, 2H), 1.73-1.60 (m, 1H), 1.52 (s, 6H), 1.10 (t, J=7.3 Hz, 3H); MS (ESI) m/z 569.26 (M+H).
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- To a solution of lithium diisopropylamide (1.8 M in hexanes, 446 μL, 0.804 mmol, 2.2 eq) and TMEDA (328 μL, 2.19 mmol, 6 eq) in THF (8 mL) at −78° C. was added a solution of compound S1-11-21 (168 mg, 0.402 mmol, 1.1 eq) in THF (1 mL) by dropwise addition. This resulted in a dark red colored solution. After 30 min, a solution of enone S7-1 (175 mg, 0.362 mmol, 1 eq) in THF (1.2 mL) was added. After complete addition, the reaction mixture was allowed to warm to −15° C. over 1 h. The reaction was quenched by the addition of ammonium chloride (saturated, aqueous solution, 15 mL) and was extracted with EtOAc (2×30 mL). The combined organic extracts were dried over Na2SO4, filtered, and concentrated under reduced pressure. Purification of the resulting oil via flash column chromatography on silica gel (Silicycle, 25 g, 10 to 25% EtOAc in hexanes gradient) provided 208 mg of S8-1 (71%) as a white solid: 1H NMR (400 MHz, CDCl3) δ 16.05 (s, 1H), 7.53-7.43 (m, 2H), 7.42-7.28 (m, 8H), 5.95-5.79 (m, 1H), 5.35 (s, 2H), 5.27-5.12 (m, 2H), 4.90 (q, J=10.4 Hz, 2H), 4.01-3.74 (m, 4H), 3.29 (d, J=6.1 Hz, 1H), 3.25-3.18 (m, 1H), 3.03-2.92 (m, 1H), 2.58-2.34 (m, 9H), 2.13 (d, J=14.7 Hz, 1H), 0.82 (s, 9H), 0.27 (s, 3H), 0.12 (s, 3H); MS (ESI) m/z 806.38 (M+H).
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- A flame-dried vial was charged with N,N-dimethylbarbituric acid (103 mg, 0.66 mmol, 2.6 eq) and tetrakis(triphenylphosphine)palladium(0) (20.1 mg, 0.017 mmol, 0.07 eq). The vial was evacuated and back-filled with nitrogen three times. A solution of S8-1 (205 mg, 0.254 mmol, 1 eq) in dichloromethane (degassed, 4 mL) under nitrogen was transferred via syringe to the prepared vial. The resulting heterogeneous solution was placed in a 35° C. heating block. After 1 h, the reaction mixture was concentrated under reduced pressure. Purification of the resulting oil via flash column chromatography on silica gel (Silicycle, 12 g, 20 to 60% EtOAc in hexanes gradient) provided 176 mg of S8-2 (90%) as an orange solid: 1H NMR (400 MHz, CD3OD) δ 7.52-7.45 (m, 2H), 7.41-7.28 (m, 8H), 5.36 (s, 2H), 4.91 (s, 2H), 4.34-4.20 (m, 2H), 4.19-3.99 (m, 2H), 3.96 (d, J=10.4 Hz, 1H), 3.36-3.27 (m, 1H), 3.23 (dd, J=4.9, 15.2 Hz, 1H), 3.04-2.93 (m, 1H), 2.59-2.36 (m, 9H), 2.14 (d, J=14.7 Hz, 1H), 0.82 (s, 9H), 0.27 (s, 3H), 0.13 (s, 3H); MS (ESI) m/z 766.33 (M+H).
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- To a solution of S8-2 (9.6 mg, 0.012 mmol, 1 eq) in 1,4-dioxane (1 mL) was added an aqueous solution of HF (50%, 150 μL). After two hours, the reaction mixture was poured into an aqueous K2HPO4 solution (2.4 g in 25 mL) and extracted with EtOAc (2×30 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. Palladium on carbon (10%, 8 mg) was added to a solution of this crude oil in dioxane:MeOH:0.5 N HCl in Methanol (5:4:1, 1 mL). The flask was fitted with a septum and evacuated and back-filled three times with hydrogen gas, and then the solution was degassed with bubbling hydrogen for 3 minutes. The reaction was stirred under an atmosphere (balloon) of hydrogen gas for 2 h. The reaction mixture was filtered through Celite to remove the palladium catalyst and concentrated under reduced pressure. Preparative reverse phase HPLC of the resulting oil was performed on a Waters Autopurification system using a Polymerx 10μ RP-γ 100 R column [30×21.20 mm, 10 micron, solvent A: 0.05 N HCl in water, solvent B: Methanol; injection volume: 1.5 mL (0.05 N HCl in water); gradient: 20→80% B over 20 min; mass-directed fraction collection]. Fractions with the desired MW, eluting at 6.75-7.5 min, were collected and freeze-dried to provide 2.0 mg of the desired compound Compound 105 (33%): 1H NMR (400 MHz, CD3OD) 4.74 (s, 2H), 4.64 (s, 2H), 4.09 (s, 1H), 3.25-3.14 (m, 1H), 3.14-2.88 (m, 8H), 2.40-2.28 (m, 1H), 2.27-2.18 (m, 1H), 1.71-1.59 (m, 1H); MS (ESI) m/z 474.13 (M+H).
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- To a solution of S8-2 (30.3 mg, 0.040 mmol, 1 eq) in THF (1 mL) was added bromoacetylbromide (3.6 μL, 0.041 mmol, 1.05 eq). After 5 min, 0.75 μL bromoacetylbromide (0.008 mmol, 0.2 eq) was added, followed by cyclopentylamine (19.5 μL, 0.197 mmol, 5 eq). After 1 h, the reaction was complete, and the mixture was concentrated under reduced pressure to produce crude S8-4-1, which was used without further purification
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- To a solution of this crude oil in 1,4-dioxane (1.8 mL) was added an aqueous solution of HF (50%, 250 μL). After 1.5 h, the reaction mixture was poured into an aqueous K2HPO4 solution (3.6 g in 30 mL) and extracted with EtOAc (2×30 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. Palladium on carbon (10%, 15.1 mg) was added to a solution of this crude oil in dioxane:MeOH (1:1, 1 mL). The flask was fitted with a septum and evacuated and back-filled three times with hydrogen gas. The reaction was stirred under an atmosphere (balloon) of hydrogen gas for 3 h. The reaction mixture was filtered through Celite to remove the palladium catalyst and concentrated under reduced pressure. Preparative reverse phase HPLC of the resulting oil was performed on a Waters Autopurification system using a Polymerx 10μ RP-γ 100 R column [30×21.20 mm, 10 micron, solvent A: 0.05 N HCl in water, solvent B: CH3CN; injection volume: 2.4 mL (0.05 N HCl in water); gradient: 20→80% B over 20 min; mass-directed fraction collection]. Fractions with the desired MW, eluting at 11.0-12.5 min, were collected and freeze-dried to provide 2.4 mg of the desired compound Compound 111 (9%): 1H NMR (400 MHz, CD3OD) δ 5.04-4.75 (m, 4H), 4.17-4.06 (m, 3H), 3.68-3.56 (m, 1H), 3.24-290 (m, 9H), 2.38-2.26 (m, 1H), 2.26-2.04 (m, 3H), 1.91-1.57 (m, 7H); MS (ESI) m/z 599.28 (M+H).
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- To a solution of S8-2 (20.1 mg, 0.026 mmol, 1 eq) in THF (1 mL) was added dimethylaminoacetyl chloride hydrochloride (85%, 7.4 mg, 0.039 mmol, 1.5 eq). After 2.5 h, the reaction mixture was diluted with sodium bicarbonate solution (saturated, aqueous, 3 mL) and extracted with EtOAc (2×7 mL). The combined organic layers were washed with brine (2 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure to produce S8-4-2 (not shown). To a solution of this crude oil in 1,4-dioxane (1.5 mL) was added an aqueous solution of HF (50%, 300 μL). After 1.5 h, the reaction mixture was poured into an aqueous K2HPO4 solution (3.6 g in 30 mL) and extracted with EtOAc (2×25 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. Palladium on carbon (10%, 12 mg) was added to a solution of this crude oil in dioxane:MeOH (1:1, 1 mL). The flask was fitted with a septum and evacuated and back-filled three times with hydrogen gas. The reaction mixture was stirred under an atmosphere (balloon) of hydrogen gas for 2.5 h, then was filtered through Celite to remove the palladium catalyst and concentrated under reduced pressure. Preparative reverse phase HPLC of the resulting oil was performed on a Waters Autopurification system using a Polymerx 10μ RP-γ 100 R column [30×21.20 mm, 10 micron, solvent A: 0.05 N HCl in water, solvent B: Methanol; injection volume: 2.0 mL (20% Methanol in 0.05 N HCl in water); gradient: 20→80% B over 20 min; mass-directed fraction collection]. Fractions with the desired MW, eluting at 8.0-10.2 min, were collected and freeze-dried to provide 7.0 mg of the desired compound Compound 131 (42%): 1H NMR (400 MHz, CD3OD) δ 4.99-4.73 (m, 4H), 4.37-4.27 (m, 2H), 4.09 (s, 1H), 3.22-2.91 (m, 15H), 2.37-2.16 (m, 2H), 1.71-1.56 (m, 1H); MS (ESI) m/z 559.19 (M+H).
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- To a solution of S8-2 (21.0 mg, 0.027 mmol, 1 eq) in THF (1 mL) was added pyrrolidineacetylchloride hydrochloride (8.4 mg, 0.045 mmol, 1.7 eq). After 1 h, the reaction mixture was diluted with sodium bicarbonate solution (saturated, aqueous, 3.5 mL) and extracted with EtOAc (2×7 mL). The combined organic layers were washed with brine (2 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure to produce S8-4-3 (not shown). To a solution of this crude oil in 1,4-dioxane (1.7 mL) was added an aqueous solution of HF (50%, 300 μL). After 1.5 h, the reaction mixture was poured into an aqueous K2HPO4 solution (3.6 g in 30 mL) and extracted with EtOAc (2×25 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. Palladium on carbon (10%, 15 mg) was added to a solution of this crude oil in dioxane:MeOH (5:4, 0.90 mL). The flask was fitted with a septum and evacuated and back-filled three times with hydrogen gas. The reaction mixture was stirred under an atmosphere (balloon) of hydrogen gas for 2.5 h, then was filtered through Celite to remove the palladium catalyst and concentrated under reduced pressure. Preparative reverse phase HPLC of the resulting oil was performed on a Waters Autopurification system using a Polymerx 10μ RP-γ 100 R column [30×21.20 mm, 10 micron, solvent A: 0.05 N HCl in water, solvent B: Methanol; injection volume: 2.0 mL (20% Methanol in 0.05 N HCl in water); gradient: 20→80% B over 20 min; mass-directed fraction collection]. Fractions with the desired MW, eluting at 9.4-11.1 min, were collected and freeze-dried to provide 3.5 mg of the desired compound Compound 139 (19%): 1H NMR (400 MHz, CD3OD) δ 5.00-4.74 (m, 4H), 4.43-4.35 (m, 2H), 4.09 (s, 1H), 3.84-3.73 (m, 2H), 3.27-2.90 (m, 11H), 2.37-2.00 (m, 6H), 1.70-1.56 (m, 1H); MS (ESI) m/z 585.28 (M+H).
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- To a solution of S8-2 (33.0 mg, 0.043 mmol, 1 eq) in THF (1 mL) was added bromoacetylbromide (4.1 μL, 0.047 mmol, 1.1 eq). After 40 min, (S)-(+)-3-fluoropyrrolidine hydrochloride salt (15.6 mg, 0.124 mmol, 3 eq) was added, followed by triethylamine (18 μL, 0.126 mmol, 3 eq). After an additional 19 h, additional pyrrolidine salt (32 mg, 0.254 mmol, 6 eq) and triethylamine (54 μL, 0.387 mmol, 9 eq) were added. After 20 h, the mixture was diluted with brine (8 mL), water (1.5 mL), and extracted with EtOAc (2×30 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure to produce S8-4-4 (not shown). To a solution of this crude oil in 1,4-dioxane (1 mL) was added an aqueous solution of HF (50%, 250 μL). After 1.5 h, the reaction mixture was poured into an aqueous K2HPO4 solution (3 g in 30 mL) and extracted with EtOAc (2×30 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. Palladium on carbon (10%, 16.5 mg) was added to a solution of this crude oil in dioxane:MeOH (1:1, 1 mL). The flask was fitted with a septum and evacuated and back-filled three times with hydrogen gas. The reaction was stirred under an atmosphere (balloon) of hydrogen gas for 2 h. The reaction mixture was filtered through Celite to remove the palladium catalyst and concentrated under reduced pressure. Preparative reverse phase HPLC of the resulting oil was performed on a Waters Autopurification system using a Polymerx 10μ RP-γ 100 R column [30×21.20 mm, 10 micron, solvent A: 0.05 N HCl in water, solvent B: CH3CN; injection volume: 2.4 mL (0.05 N HCl in water); gradient: 10-60% B over 15 min; mass-directed fraction collection]. Fractions with the desired MW, eluting at 6.3-7.3 min, were collected and freeze-dried to provide 7.8 mg of the desired compound Compound 147 (27%): 1H NMR (400 MHz, CD3OD) δ 5.61-5.34 (m, 1H), 5.02-4.77 (m, 4H), 4.58-4.38 (m, 2H), 4.18-3.90 (m, 3H), 3.74-3.38 (m, 2H), 3.24-2.89 (m, 9H), 2.59-2.28 (m, 4H), 2.27-2.18 (m, 1H), 1.71-1.58 (m, 1H); MS (ESI) m/z 603.35 (M+H).
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- Compound 150 (7.9 mg, 0.013 mmol) was dissolved in Methanol (1 mL) and 1,4-dioxane (1 mL) and 0.5 M HCl in Methanol (0.2 mL), and palladium on carbon (Degussa, 10 wt %, ˜2 mg) was added. An atmosphere of hydrogen was introduced, and the reaction mixture was stirred overnight. The reaction mixture was filtered through Celite, and the filtrate was concentrated under reduced pressure. The material was dissolved in Methanol (1 mL) and palladium on carbon (Degussa, 10 wt %, ˜20 mg) was added. An atmosphere of hydrogen was introduced, and the reaction mixture was stirred overnight. The reaction mixture was filtered through Celite, and the filtrate was concentrated under reduced pressure. The material was purified on a Waters Autopurification system equipped with a Phenomenex Polymerx 10μ RP 100A column [10 μm, 30×21.20 mm; flow rate, 20 mL/min; Solvent A: 0.05N HCl in water; Solvent B: Methanol; gradient: 20→100% B; mass-directed fraction collection]. Fractions with the desired MW were collected and freeze-dried to yield 1.2 mg (16%, 2 steps) of the desired product Compound 109 as a yellow solid. 1H NMR (400 MHz, CD3OD with 1 drop DCl) δ 6.84 (s, 1H), 4.85-4.65 (m, 4H), 4.13 (s, 1H), 3.15-2.88 (m, 9H), 2.61-2.50 (m, 1H), 2.28-2.20 (m, 1H), 1.92-1.82 (m, 2H), 1.65-1.50 (m, 1H), 1.44 (s, 6H), 1.06 (t, J=7.3 Hz, 3H); MS (ESI) m/z 526.30 (M+H).
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- (Methoxymethyl)triphenylphosphonium chloride (1.55 g, 4.51 mmol) was added to a suspension of potassium t-butoxide (0.506 g, 4.51 mmol) in THF (15 mL), giving an immediate red colored solution. After 15 min, a solution of compound S1-7 (1.00 g, 2.26 mmol) in THF (5 mL) was added. After 2 h, the reaction mixture was quenched with water and was extracted with EtOAc (2×). The combined extracts were dried over Na2SO4, filtered, and concentrated under reduced pressure. The material was purified by column chromatography (Biotage 20 g column, 0 to 6% EtOAc in hexane gradient), yielding 986 mg (93%) of the compound S10-1 as a mixture of two isomers. MS (ESI) m/z 493.04, 495.04 (M+Na).
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- i-Propyl magnesium chloride/lithium chloride solution (Chemetall Foote Corporation, 1.2 M solution in THF, 8.5 mL, 10.2 mmol) was added to a −50° C. solution of compound S10-1 (956 mg, 2.03 mmol) in THF (20 mL). The reaction mixture was allowed to warm to 0° C. over 1 h. N,N-Dimethylformamide (1.25 mL, 16.2 mmol) was added, and the reaction was allowed to warm to rt. After 1 hour, the reaction mixture was quenched with ammonium chloride (saturated, aqueous solution) and was extracted with EtOAc (2×). The combined extracts were dried over Na2SO4, filtered, and concentrated under reduced pressure. The material was purified by column chromatography (Biotage 25 g column, 5 to 40% EtOAc in hexane gradient), yielding 205 mg (24%) of compound S10-2. Rf=0.23 in 20% EtOAc in hexane; 1H NMR (400 MHz, CDCl3) δ 10.3 (s, 1H), 7.45-7.30 (m, 7H), 7.28-7.24 (m, 1H), 7.10-7.02 (m, 3H), 6.67 (d, J=12.8 Hz, 1H), 5.09 (s, 2H), 3.77 (s, 3H), 2.43 (d, J=4.6 Hz, 3H); MS (ESI) m/z 443.18 (M+Na).
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- Neopentylamine (0.077 mL, 0.66 mmol) was added to a solution of compound S10-2 (55.5 mg, 0.132 mmol) in CH2Cl2 (5 mL) and Acetic acid (0.038 mL, 0.66 mmol). After 5 min, sodium triacetoxyborohydride (83.9 mg, 0.396 mmol) was added. After 1 hour, the reaction mixture was diluted with EtOAc and was washed with NaHCO3 (saturated, aqueous solution, 2×). The organics were dried over Na2SO4, filtered, and concentrated under reduced pressure, yielding 53.3 mg (88% crude) of compound S10-3-1. 1H NMR (400 MHz, CDCl3) δ 7.46-7.30 (m, 7H), 7.26-7.20 (m, 1H), 7.10-7.04 (m, 2H), 4.96 (s, 2H), 3.72 (s, 2H), 2.86-2.75 (m, 4H), 2.35 (d, J=1.8 Hz, 3H), 2.23 (s, 2H), 0.89 (s, 9H); MS (ESI) m/z 462.28 (M+H).
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- Lithium diisopropylamide was prepared at −40° C. from n-butyllithium (2.5 M solution in hexane, 0.045 mL, 0.11 mmol) and diisopropylamine (0.016 mL, 0.11 mmol) in THF (2 mL). The reaction mixture was cooled to −78° C. and TMEDA (0.040 mL, 0.27 mmol) was added followed by the dropwise addition of a solution of compound S10-3-1 (24.9 mg, 0.0539 mmol) in THF (1 mL). No color change was observed, so additional lithium diisopropylamide (2.0M solution in THF, 0.060 mL, 0.12 mmol) was added until a deep red colored solution persisted. After 15 min, a solution of enone S7-1 (21.7 mg, 0.045 mmol) in THF (0.5 mL) was added. After complete addition, the reaction mixture was allowed to warm to −20° C. over 1 h. The reaction was quenched by the addition of ammonium chloride (saturated, aqueous solution) and was extracted with EtOAc (2×). The combined extracts were dried over Na2SO4, filtered, and concentrated under reduced pressure. The material was purified on a Waters Autopurification system equipped with a Sunfire Prep C18 OBD column [5 μm, 19×50 mm; flow rate, 20 mL/min; Solvent A: H2O with 0.1% HCO2H; Solvent B: CH3CN with 0.1% HCO2H; gradient: 50→100% B; mass-directed fraction collection], yielding 18.9 mg (49%) of the desired product S10-4-1 as a yellow solid. 1H NMR (400 MHz, CDCl3) δ 16.0 (s, 1H), 7.52-7.44 (m, 2H), 7.40-7.28 (m, 8H), 5.36 (s, 2H), 4.94 (d, J=11.0 Hz, 1H), 4.78 (d, J=10.4 Hz, 1H), 4.10-3.89 (m, 3H), 3.29-3.15 (m, 2H), 3.06-2.96 (m, 2H), 2.65-2.40 (m, 11H), 2.15 (d, J=14.6 Hz, 1H), 0.98 (s, 9H), 0.82 (s, 9H), 0.27 (s, 3H), 0.12 (s, 3H); MS (ESI) m/z 850.39 (M+H).
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- Aqueous HF (0.4 mL, 48%) was added to a solution of S10-4-1 (18.9 mg, 0.022 mmol) in 1,4-dioxane (1 mL) in a plastic vial. After stirring overnight, the reaction mixture was poured into a solution of K2HPO4 (4.8 g) in water (15 mL). The mixture was extracted with EtOAc (3×). The combined EtOAc extracts were dried over Na2SO4, filtered and concentrated under reduced pressure. The material was dissolved in Methanol (2 mL), 1,4-dioxane (2 mL) and 0.5M HCl in Methanol (0.5 mL), and palladium on carbon (Degussa, 10 wt %, ˜5 mg) was added. An atmosphere of hydrogen was introduced, and the reaction mixture was stirred for 2 h. The reaction mixture was filtered through Celite, and the filtrate was concentrated under reduced pressure. The material was purified on a Waters Autopurification system equipped with a Phenomenex Polymerx 10μ RP 100A column [10 μm, 30×21.20 mm; flow rate, 20 mL/min; Solvent A: 0.05N HCl in water; Solvent B: CH3CN; gradient: 0→70% B; mass-directed fraction collection]. Fractions with the desired MW were collected and freeze-dried to yield 7.8 mg (57%, 2 steps) of the desired product Compound 201 as a yellow solid. 1H NMR (400 MHz, CD3OD with 1 drop DCl) δ 4.60 (t, J=14.4 Hz, 1H), 4.32 (dd, J=16.0, 7.8 Hz, 1H), 4.15 (s, 1H), 3.88-3.79 (m, 1H), 3.62-3.50 (m, 1H), 3.36-3.16 (m, 5H), 3.15-2.96 (m, 8H), 2.35-2.24 (m, 2H), 1.61 (q, J=12.7 Hz, 1H), 1.20 (s, 9H); MS (ESI) m/z 558.26 (M+H).
- The following compounds were prepared by methods similar to that for Compound 201, substituting the appropriate tetrahydroisoquinoline for S10-3-1. The appropriate tetrahydroisoquinolines were prepared by methods similar to that for S10-3-1, substituting the appropriate amine for neopentylamine.
-
- Yellow solid: 1H NMR (400 MHz, CD3OD with 1 drop DCl) δ 4.53 (t, J=15.8 Hz, 1H), 4.24 (dd, J=16.0, 3.7 Hz, 1H), 4.14 (s, 1H), 4.04-3.96 (m, 1H), 3.34-3.14 (m, 4H), 3.14-2.90 (m, 8H), 2.34-2.23 (m, 2H), 1.69-1.52 (m, 10H); MS (ESI) m/z 544.27 (M+H).
- Prepared from S10-3-2,
- 1H NMR (400 MHz, CDCl3) δ 7.45-7.30 (m, 7H), 7.29-7.22 (m, 1H), 7.12-7.08 (m, 2H), 4.96 (s, 2H), 3.70 (s, 2H), 2.86-2.80 (m, 2H), 2.78-2.72 (m, 2H), 2.33 (s, 3H), 1.11 (s, 9H); MS (ESI) m/z 448.31 (M+H).
-
- Yellow solid: 1H NMR (400 MHz, CD3OD with 1 drop DCl) δ 4.59 (t, J=15.3 Hz, 1H), 4.22 (dd, J=16.3, 5.7 Hz, 1H), 4.14 (s, 1H), 3.94-3.86 (m, 1H), 3.86-3.75 (m, 1H), 3.44-3.34 (m, 1H), 3.33-2.96 (m, 11H), 2.35-2.22 (m, 4H), 2.00-1.84 (m, 4H), 1.80-1.70 (m, 2H), 1.68-1.55 (m, 1H); MS (ESI) m/z 556.26 (M+H).
- Prepared from S10-3-3,
- 1H NMR (400 MHz, CDCl3) δ 7.45-7.30 (m, 7H), 7.29-7.22 (m, 1H), 7.12-7.08 (m, 2H), 4.96 (s, 2H), 3.66 (s, 2H), 2.90-2.83 (m, 2H), 2.78-2.72 (m, 2H), 2.71-2.62 (m, 1H), 2.34 (d, J=1.4 Hz, 3H), 1.96-1.86 (m, 2H), 1.76-1.64 (m, 2H), 1.63-1.42 (m, 4H); MS (ESI) m/z 460.54 (M+H).
-
- To a stirred suspension of compound S1-7 (3.99 g, 8.99 mmol, 1 eq) in methanol (50 mL) was added sodium borohydride (420 mg, 11.1 mmol, 1.3 eq). Gas evolution was evident; the solution was homogeneous after 5 min. After 40 min the reaction was complete. The mixture was poured into a saturated aqueous NH4Cl solution (40 mL), water (10 mL), and extracted with EtOAc (3×75 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. The crude material (2.13 g, 4.30 mmol, 1 eq) was azeotropically dried from toluene three times and dried under vacuum for 2 h. To a solution of this bromide in THF (90 mL) under N2 at −50° C. was added isopropyl magnesium chloride-lithium chloride complex (1.2 M solution in THF, 37.4 mL, 44.9 mmol, 5 eq) dropwise over 10 minutes. The resulting dark yellow solution was allowed to warm to 0° C. over 1 h. Dimethylformamide (5.57 mL, 71.9 mmol, 8 eq) was added dropwise, and the solution was heated to 40° C. for 1.5 h. The reaction solution was poured into a saturated aqueous NH4Cl solution (45 mL), water (20 mL), and extracted with EtOAc (2×100 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. MS (ESI) m/z 393.32 (M−H).
-
- A flame-dried flask was cooled under nitrogen and charged with potassium tert-butoxide (1.78 g, 15.8 mmol, 2 eq), evacuated and back-filled with N2, charged with THF (80 mL), and cooled to 0° C. To this solution was added (methoxymethyl)triphenylphosphonium chloride (5.43 g, 15.8 mmol, 2 eq). The resulting red solution was allowed to warm to room temperature for 30 min, and a solution of S11-1 (3.11 g, 7.88 mmol, 1 eq) in THF (15 mL) was added slowly. After 1.5 h, the reaction was diluted with water (45 mL) and extracted with EtOAc (2×75 mL). The combined organic layers were washed with brine, dried (Na2SO4), filtered, and concentrated under reduced pressure. Purification of the resulting crude oil via flash column chromatography on silica gel (Redisep, 220 g, 5 to 40% EtOAc in hexane gradient) provided 1.57 g and 949 mg of the E and Z isomers of S11-2, respectively (75% total, 1.65:1 E:Z) as yellow oils: 1H NMR (E-isomer, 400 MHz, CDCl3) δ 7.45-7.30 (m, 7H), 7.28-7.20 (m, 1H), 7.14-7.03 (m, 3H), 5.88 (d, J=13.4 Hz, 1H), 5.05 (s, 2H), 4.76 (s, 2H), 3.63 (s, 3H), 2.35 (s, 3H); MS (ESI) m/z 421.37 (E-isomer, M−H); 1H NMR (Z-isomer, 400 MHz, CDCl3) δ 7.42-7.29 (m, 7H), 7.04 (d, J=7.3 Hz, 2H), 6.31 (d, J=7.3 Hz, 1H), 5.48 (d, J=7.3 Hz, 1H), 4.97 (s, 2H), 4.65 (s, 2H), 3.70 (s, 3H), 2.36 (s, 3H); MS (ESI) m/z 421.34 (Z-isomer, M−H).
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- To a solution of S11-2 (196 mg, 0.464 mmol, 1 eq) in dichloromethane (4.6 mL) was added Dess-Martin periodinane (239 mg, 0.563 mmol, 1.2 eq). After 1 h, the solution was diluted with saturated aqueous sodium bicarbonate (25 mL) and extracted with EtOAc (2×30 mL). The combined organic layers were washed with saturated aqueous sodium bicarbonate (10 mL), brine (20 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure. The material was used immediately in the next reaction without further purification or characterization.
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- To the crude compound S11-3 (0.116 mmol) in dichloromethane (1.5 mL) was added acetic acid (33 μL, 0.58 mmol, 5 eq) and propylamine (48 μL, 0.58 mmol, 5 eq) were added. After 50 min, the solution was deep red in color. After 2 h, sodium triacetoxyborohydride (123 mg, 0.58 mmol, 5 eq) was added to the reaction mixture. The solution color faded to yellow. After an additional 17.5 h, the reaction mixture was diluted with saturated aqueous sodium bicarbonate (4 mL) and extracted with EtOAc (2×8 mL). The combined organic layers were washed with brine (3 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure. Purification of the resulting crude oil via flash column chromatography on silica gel (Biotage, 10 g, 2 to 20% EtOAc in hexane gradient) provided 29 mg of S11-4-1 (57%) as a clear oil: 1H NMR (400 MHz, CDCl3) δ 7.47-7.40 (m, 2H), 7.40-7.30 (m, 5H), 7.27-7.21 (m, 1H), 7.07 (d, J=7.3 Hz, 2H), 4.97 (s, 2H), 3.66 (s, 2H), 2.99-2.89 (m, 2H), 2.76-2.63 (m, 2H), 2.58-2.48 (m, 5H), 2.38 (s, 3H) 1.72-1.58 (m, 2H), 0.97 (d, J=7.3 Hz, 3H); MS (ESI) m/z 432.40 (M−H).
- The following intermediates were prepared according to the methods used to synthesize S11-4-1.
-
- 1H NMR (400 MHz, CDCl3) δ 7.48-7.30 (m, 7H), 7.28-7.21 (m, 1H), 7.06 (d, J=7.3 Hz, 2H), 4.97 (s, 2H), 3.66 (s, 2H), 2.98-292 (m, 2H), 2.73-2.60 (m, 4H), 2.35 (s, 3H) 1.21 (t, J=7.3 Hz, 3H); MS (ESI) m/z 418.41 (M−H).
-
- 1H NMR (400 MHz, CDCl3) δ 7.47-7.40 (m, 2H), 7.40-7.30 (m, 5H), 7.27-7.21 (m, 1H), 7.07 (d, J=7.3 Hz, 2H), 4.98 (s, 2H), 3.61 (s, 2H), 2.96-2.85 (m, 2H), 2.70-2.60 (m, 2H), 2.38-2.25 (m, 5H), 1.91-1.85 (m, 1H), 0.95 (d, J=6.1 Hz, 6H); MS (ESI) m/z 446.40 (M−H).
-
- 1H NMR (400 MHz, CDCl3) δ 7.45-7.40 (m, 2H), 7.40-7.30 (m, 5H), 7.28-7.22 (m, 1H), 7.07 (d, J=7.3 Hz, 2H), 5.00 (s, 2H), 3.73 (s, 2H), 2.92-2.85 (m, 2H), 2.79-2.70 (m, 2H), 2.34 (s, 3H), 2.28 (s, 2H), 0.92 (s, 9H); MS (ESI) m/z 460.41 (M−H).
-
- 1H NMR (400 MHz, CDCl3) δ 7.48-7.29 (m, 7H), 7.28-7.20 (m, 1H), 7.06 (d, J=8.6 Hz, 2H), 4.97 (s, 2H), 3.76 (s, 2H), 3.04-2.87 (m, 3H), 2.80-2.69 (m, 2H), 2.35 (s, 3H), 1.16 (d, J=6.7 Hz, 6H); MS (ESI) m/z 432.39 (M−H).
-
- 1H NMR (400 MHz, CDCl3) δ 7.48-7.40 (m, 2H), 7.40-7.29 (m, 5H), 7.27-7.22 (m, 1H), 7.07 (d, J=7.3 Hz, 2H), 4.97 (s, 2H), 3.85-3.67 (m, 2H), 3.00-2.85 (m, 2H), 2.81-2.65 (m, 3H), 2.34 (s, 3H), 1.75-1.60 (m, 1H), 1.49-1.36 (m, 1H), 1.09 (d, J=6.7 Hz, 3H), 0.95 (d, J=7.3 Hz, 3H); MS (ESI) m/z 446.43 (M−H).
-
- 1H NMR (400 MHz, CDCl3) δ 7.48-7.40 (m, 2H), 7.40-7.29 (m, 5H), 7.27-7.22 (m, 1H), 7.07 (d, J=7.3 Hz, 2H), 4.97 (s, 2H), 3.85-3.67 (m, 2H), 3.00-2.85 (m, 2H), 2.81-2.65 (m, 3H), 2.34 (s, 3H), 1.75-1.60 (m, 1H), 1.49-1.36 (m, 1H), 1.09 (d, J=6.7 Hz, 3H), 0.95 (d, J=7.3 Hz, 3H); MS (ESI) m/z 446.46 (M−H).
-
- 1H NMR (400 MHz, CDCl3) δ 7.48-7.40 (m, 2H), 7.40-7.29 (m, 5H), 7.27-7.22 (m, 1H), 7.07 (d, J=7.3 Hz, 2H), 4.97 (s, 2H), 3.85-3.67 (m, 2H), 3.00-2.85 (m, 2H), 2.81-2.65 (m, 3H), 2.34 (s, 3H), 1.75-1.60 (m, 1H), 1.49-1.36 (m, 1H), 1.09 (d, J=6.7 Hz, 3H), 0.95 (d, J=7.3 Hz, 3H); MS (ESI) m/z 446.46 (M−H).
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- 1H NMR (400 MHz, CDCl3) δ 7.47-7.40 (m, 2H), 7.40-7.30 (m, 5H), 7.28-7.22 (m, 1H), 7.07 (d, J=7.3 Hz, 2H), 4.97 (s, 2H), 3.00-2.92 (m, 2H), 2.81-2.70 (m, 2H), 2.34 (s, 3H), 1.20 (s, 9H); MS (ESI) m/z 446.47 (M−H).
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- To a solution of lithium diisopropylamide (1.8 M in hexanes, 73 μL, 0.132 mmol, 2.4 eq) and TMEDA (41 μL, 0.275 mmol, 6 eq) in THF (2 mL) at −78° C. was added a solution of compound S11-4-1 (29 mg, 0.065 mmol, 1.1 eq) in THF (400 μL) by dropwise addition. This resulted in a dark red colored solution. After 10 min, a solution of enone S7-1 (27 mg, 0.055 mmol, 1 eq) in THF (400 μL) was added. After complete addition, the reaction mixture was allowed to warm to −20° C. over 1 h. The reaction was quenched by the addition of ammonium chloride (saturated, aqueous solution, 800 μL) and was extracted with EtOAc (2×30 mL). The combined organic extracts were dried over Na2SO4, filtered, and concentrated under reduced pressure. Purification of the resulting oil via flash column chromatography on silica gel (Biotage, 10 g, 5 to 40% EtOAc in hexanes gradient) provided 25 mg of S11-5-1 (55%): 1H NMR (400 MHz, CDCl3) δ 7.51-7.46 (m, 2H), 7.46-7.41 (m, 2H), 7.40-7.29 (m, 6H), 5.35 (s, 2H), 4.90-4.75 (m, 2H), 3.96 (d, J=11.0 Hz, 1H), 3.80-3.42 (m, 2H), 3.26-3.16 (m, 1H), 3.02-2.64 (m, 3H), 2.62-2.40 (m, 10H), 2.14 (d, J=14.0 Hz, 1H), 0.97-0.92 (3H), 0.89-0.77 (m, 10H), 0.27 (s, 3H), 0.12 (s, 3H); MS (ESI) m/z 820.71 (M−H).
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- To a solution of S11-5-1 (25 mg, 0.030 mmol, 1 eq) in 1,4-dioxane (1 mL) was added an aqueous solution of HF (50%, 300 μL). After 15.5 h, the reaction mixture was poured into an aqueous K2HPO4 solution (3.6 g in 30 mL) and extracted with EtOAc (2×30 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated under reduced pressure. Palladium on carbon (10%, 16 mg) was added to a solution of this crude oil in dioxane:MeOH (1:1, 1 mL). The flask was fitted with a septum and evacuated and back-filled three times with hydrogen gas. The reaction was stirred under an atmosphere (balloon) of hydrogen gas for 1 h. The reaction mixture was filtered through Celite to remove the palladium catalyst and concentrated under reduced pressure. Preparative reverse phase HPLC of the resulting oil was performed on a Waters Autopurification system using a Polymerx 10μ RP-γ 100 R column [30×21.20 mm, 10 micron, solvent A: 0.05 N HCl in water, solvent B: Methanol; injection volume: 1.5 mL (0.05 N HCl in water); gradient: 30→70% B over 15 min; mass-directed fraction collection]. Fractions with the desired MW, eluting at 6.0-8.3 min, were collected and freeze-dried to provide 8.4 mg of the desired compound Compound 304 (45%): 1H NMR (400 MHz, CD3OD) δ 4.73-4.62 (m, 1H), 4.41-4.27 (m, 1H), 4.10 (s, 1H), 3.93-3.81 (m, 1H), 3.43-3.24 (m, 1H), 3.24-2.88 (m, 13H), 2.36-2.18 (m, 2H), 1.97-1.83 (m, 2H), 1.70-1.54 (m, 1H), 1.07 (t, J=7.3 Hz, 3H); MS (ESI) m/z 530.34 (M−H).
- The following compounds of Formula IV were prepared according to the methods of Compound 304, using the appropriate N-substituted phenyl 5-(benzyloxy)-8-fluoro-7-methyl-1,2,3,4-tetrahydroisoquinoline-6-carboxylate intermediate in place of S11-4-1
-
- Prepared from S11-4-2: 1H NMR (400 MHz, CD3OD) δ 4.74-4.62 (m, 1H), 4.37-4.26 (m, 1H), 4.09 (s, 1H), 3.92-3.83 (m, 1H), 3.49-3.34 (m, 4H), 3.23-2.92 (m, 10H), 2.38-2.27 (m, 1H), 2.26-2.18 (m, 1H), 1.72-1.58 (m, 1H), 1.48 (t, J=7.3 Hz, 3H); MS (ESI) m/z 516.31 (M−H).
-
- Prepared from S11-4-3: 1H NMR (400 MHz, CD3OD) δ 4.72-4.61 (m, 1H), 4.40-4.29 (m, 1H), 4.08 (s, 1H), 3.93-3.83 (m, 1H), 3.42-3.30 (m, 1H), 3.24-2.92 (m, 13H), 2.37-2.26 (m, 3H), 1.70-1.58 (m, 1H), 1.10 (t, J=6.7 Hz, 6H); MS (ESI) m/z 544.36 (M−H).
-
- Prepared from S11-4-4: 1H NMR (400 MHz, CD3OD) δ 4.71-4.61 (m, 1H), 4.51-4.40 (m, 1H), 4.09 (s, 1H), 3.91-3.82 (m, 1H), 3.59-3.49 (m, 1H), 3.27-2.92 (m, 12H), 2.38-2.17 (m, 2H), 1.71-1.59 (m, 1H), 1.19 (s, 9H); MS (ESI) m/z 558.35 (M−H).
-
- Prepared from S11-4-5: 1H NMR (400 MHz, CD3OD) δ 4.57-4.39 (m, 2H), 4.09 (s, 1H), 3.88-3.75 (m, 2H), 3.39-3.26 (m, 1H), 3.24-2.92 (m, 11H), 2.37-2.18 (m, 2H), 1.70-1.58 (m, 1H), 1.48 (d, 5.9 Hz, 6H); MS (ESI) m/z 530.32 (M−H).
-
- Prepared from S11-4-6: 1H NMR (400 MHz, CD3OD) δ 4.51-4.41 (m, 2H), 4.09 (s, 1H), 3.84-3.74 (m, 1H), 3.61-3.49 (m, 1H), 3.43-3.39 (m, 1H), 3.24-2.89 (m, 11H), 2.36-2.17 (m, 2H), 2.06-1.92 (m, 1H), 1.83-1.57 (m, 2H), 1.48-1.41 (m, 3H), 1.09 (t, J=7.3 Hz, 3H); MS (ESI) m/z 544.36 (M−H).
-
- Prepared from S11-4-7: 1H NMR (400 MHz, CD3OD) δ 4.56-4.41 (m, 2H), 4.08 (s, 1H), 3.84-3.74 (m, 1H), 3.61-3.50 (m, 1H), 3.43-3.39 (m, 1H), 3.24-2.89 (m, 11H), 2.36-2.17 (m, 2H), 2.04-1.90 (m, 1H), 1.81-1.57 (m, 2H), 1.48-1.40 (m, 3H), 1.09 (t, J=7.3 Hz, 3H); MS (ESI) m/z 544.36 (M−H).
-
- Prepared from S11-4-8: 1H NMR (400 MHz, CD3OD) δ 4.56-4.41 (m, 2H), 4.08 (s, 1H), 3.84-3.74 (m, 1H), 3.61-3.52 (m, 1H), 3.43-3.39 (m, 1H), 3.24-2.92 (m, 11H), 2.36-2.17 (m, 2H), 2.04-1.91 (m, 1H), 1.81-1.54 (m, 2H), 1.48-1.40 (m, 3H), 1.10 (t, J=7.3 Hz, 3H), MS (ESI) m/z 544.43 (M−H).
-
- Prepared from S11-4-9: 1H NMR (400 MHz, CD3OD) δ 4.61-4.37 (m, 2H), 4.07-3.99 (m, 2H), 3.27-2.91 (m, 12H), 2.37-2.18 (m, 2H), 1.72-1.49 (m, 10H); MS (ESI) m/z 544.3 (M−H).
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- To a solution of compound S1-7 (10 g, 22.60 mmol, 1.0 equiv) in MeOH was added trimethylorthoformate (4.8 g, 45.20 mmol, 2.0 equiv) and TsOH.H2O (0.13 g, 0.68 mmol, 0.03 equiv) at rt. The reaction mixture was heated to reflux overnight and concentrated under reduced pressure. The residue was diluted with H2O and extracted with EtOAc. The organic layer was dried over sodium sulfate and evaporated to dryness. The crude product was purified by column chromatography on silica gel (petroleum ether:EtOAc from 100:1 to 30:1) to afford compound S12-1 as a light yellow solid (10 g, 91%): 1H NMR (400 MHz, CDCl3) δ 7.41-7.45 (m, 2H), 7.25-7.35 (m, 5H), 7.16-7.21 (m, 1H), 6.98 (d, J=8.0 Hz, 2H), 5.71 (s, 1H), 5.04 (s, 2H), 3.46 (s, 6H), 2.29 (d, J=2.4 Hz, 3H).
-
- To bromide S12-1 (500 mg, 1.02 mmol, 1 eq) in anhydrous 1,4-dioxanl (5 mL) was added benzylamine (0.165 mL, 1.50 mmol, 1.5 eq), cesium carbonate (0.585 g, 1.80 mmol, 1.8 eq), XantPhos (70 mg, 0.12 mmol, 0.12 eq), and Pd2(dba)3 (20 mg, 0.02 mmol, 0.02 eq). The mixture was sealed, degassed by bubbling dry nitrogen through for 5 min with gentle stirring, and heated at 160° C. in a Biotage microwave reactor for 25 min, and cooled to room temperature. LC/MS analysis indicated complete consumption of the starting material and the appearance of the desired secondary amine S12-2 as the major product.
- A total of 2.45 g of bromide S12-1 was processed in 500 mg batches per the above procedure. The reaction mixtures were combined, diluted with saturated aqueous sodium bicarbonate (100 mL), and extracted with EtOAc (200 mL×1, 50 mL×2). The EtOAc extracts were combined, dried over sodium sulfate, and concentrated under reduced pressure. Flash column chromatography on silica gel using 0% to 10% EtOAc/hexane yielded the desired product S12-2 as an orange oil (1.68 g, 65%): Rf 0.70 (20% EtOAc/hexane); 1H NMR (400 MHz, CDCl3) δ 7.20-7.45 (m, 13H), 7.05 (d. J=8.6 Hz, 2H), 5.55 (s, 1H), 5.24 (br t, J=6.1 Hz, 1H), 5.14 (s, 2H), 4.43 (d, J=6.1 Hz, 2H), 3.37 (s, 6H), 2.26 (s, 3H); MS (ESI) m/z 516.3 (M+H), calcd for C31H31FNO5 516.2.
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- To secondary amine S12-1 (1.47 g, 2.85 mmol, 1 eq) in anhydrous DMF (6 mL) was added NaH (250 mg, 60% in mineral oil, 6.30 mmol, 2.2 eq). The yellow suspension was stirred at rt for 30 min. NaI (43 mg, 0.28 mmol, 0.1 eq) and benzyl bromide (0.82 mL, 6.90 mmol, 2.4 eq) were added. The reaction (deep-orange) was stirred at rt for 24 h, diluted with EtOAc (100 mL), washed with saturated aqueous sodium bicarbonate (100 mL×2) and brine (50 mL×1), dried over sodium sulfate, and concentrated in under reduced pressure. Flash column chromatography on silica gel using 0% to 10% EtOAc/hexane yielded the desired tertiary amine S12-3 as a pale oil (1.16 g, 67%): Rf 0.33 (10% EtOAc/hexane); 1H NMR (400 MHz, CDCl3) δ 7.20-7.40 (m, 18H), 6.99 (d, J=8.0 Hz, 2H), 5.72 (s, 1H), 4.68 (s, 2H), 4.20-4.40 (br m, 4H), 3.32 (s, 6H), 2.34 (s, 3H), MS (ESI) m/z 606.3 (M+H), calcd for C38H37FNO5 606.3. The compound was contaminated with the corresponding benzyl ester (instead of phenyl ester), which was not removed prior to the next step.
-
- The diisopropylamine (0.30 mL, 2.12 mmol, 1.1 eq) in anhydrous THF (10 mL) at −78° C. was added n-BuLi (1.33 mL, 1.6 M/hexane, 2.12 mmol, 1.1 eq) dropwise. The pale solution was stirred at 0° C. for 30 min and cooled to −78° C. TMEDA (0.35 mL, 2.33 mmol, 1.2 eq) was added, followed by the addition of compound S12-3 (1.16 g, 1.92 mmol, 1 eq, in 30 mL THF) dropwise over a period of 5 min. The deep-red solution was stirred at −78° C. for 30 min. LHMDS (2.12 mL, 1.0 M/THF, 1.1 eq) was added, followed by the addition of enone S7-1 (0.96 g, 1.92 mmol, in 10 mL THF) dropwise over a period of 2 min. The resulting yellow solution was slowly warm up to 0° C. over a period of 3 h, diluted with EtOAc (200 mL) and saturated aqueous sodium bicarbonate (100 mL). The EtOAc layer was collected. The aqueous layer was extracted with more EtOAc (50 mL×2). The combined EtOAc solution was dried over sodium sulfate and concentrated in under reduced pressure. Flash column chromatography on silica gel using 0% to 15% EtOAc/hexane yielded the desired product as a yellow solid (0.77 g, 40): Rf 0.50 (20/o EtOAc/hexane); 1H NMR (400 MHz, CDCl3) δ 15.82 (s, 1 H), 7.00-7.50 (m, 20H), 5.79 (s, 1H), 5.38 (s, 2H), 5.04 (d, J=10.4 Hz, 1H), 4.50 (d, J=10.4 Hz, 1H), 4.00-4.40 (m, 4H), 3.95 (d, J=10.4 Hz, 1H), 3.35 (s, 3H), 3.20-3.30 (m, 3H), 3.13 (s, 3H), 2.95-3.05 (m, 1H), 2.55-2.65 (m, 1H), 2.50 (s, 6H), 2.15-2.20 (m, 1H), 0.85 (s, 9H), 0.30 (s, 3H), 0.14 (s, 3H); MS (ESI) m/z 994.5 (M+H), calcd for C58H65FN3O9Si 994.6.
- 0.52 g of compound S12-3 was also recovered.
-
- To compound S12-4 (0.77 g, 0.78 mmol, 1 eq) in THF (10 mL) was added 3 N HCl/water (2 mL, final [HCl]=0.5 M). The deep yellow solution was stirred at rt for 2 h, diluted with EtOAc (100 mL), washed with saturated aqueous sodium bicarbonate (100 mL×2) and brine (50 mL×1), dried over sodium sulfate, and concentrated in under reduced pressure to yield the crude product as a deep-orange solid (0.72 g, 97%): MS (ESI) m/z 948.4 (M+H), calcd for C56H59FN3O8Si 948.4.
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- To aldehyde S12-5 (95 mg, 0.10 mmol, 1 eq) in 1,2-dichloroethane (2 mL) was added glycine benzyl ester (50 mg, TsOH salt, 0.15 mmol, 1.5 eq), triethylamine (0.022 mL, 0.16 mmol, 1.6 eq), HOAc (0.024 mL, 0.42 mmol, 4 eq), and Na(OAc)3BH (32 mg, 0.15 mmol, 1.5 eq). The deep-red solution became yellow and was stirred at rt for 1 h. Isobutyraldehyde (0.032 mL, 0.35 mmol, 3.5 eq) and Na(OAc)3BH (82 mg, 0.40 mmol, 4 eq) were added. The reaction was stirred at rt for 1 h, diluted with EtOAc (20 mL), washed with saturated aqueous sodium bicarbonate (10 mL×1) and brine (10 mL×1), dried over sodium sulfate, and concentrated in under reduced pressure to yield the crude product (S12-7-1) as a yellow residue: MS (ESI) m/z 1153.5 (M+H), calcd for C69H78FN4O9Si 1153.6.
-
- Crude compound S12-7-1 was dissolved in THF (1.5 mL) and added with 50% HF/water (0.5 mL). The yellow solution was stirred at rt for 2 h and added into K2HPO4/water (5 g in 20 mL water) with stirring. The mixture was extracted with EtOAc (20 mL×3). The EtOAc extracts were combined, dried over sodium sulfate, and concentrated in under reduced pressure to yield the crude product as a yellow residue: MS (ESI) m/z 1039.5 (M+H), calcd for C63H63FN4O9 1038.5.
- The above crude product (0.10 mmol, 1 eq) was dissolved in methanol (3 mL) and 1,4-dioxane (1 mL). 10% Pd—C (21 mg, 0.01 mmol, 0.1 eq) and 0.5 N HCl/methanol (1 mL) were added. The mixture was purged with hydrogen and stirred under 1 atm hydrogen at rt for 1 h. The catalyst was filtered off with a small Celite pad and washed with methanol (2 mL×3). The yellow methanol solution was concentrated in under reduced pressure to afford the crude product, which was purified with HPLC to yield the desired product S12-8-1) as a yellow solid (26 mg, HCl salt, 37% overall): 1H NMR (400 MHz, CD3OD) δ 4.52 (s, 2H), 4.08 (s, 1H), 4.02 (s, 2H), 2.90-3.50 (m, 8H), 2.10-2.30 (m, 3H), 1.55-1.70 (m, 1H), 1.00 (d, J=6.1 Hz, 6H): MS (ESI) m/z 591.4 (M+H), calcd for C28H36FN4O9 591.3.
-
- The above amino acid S12-8-1 (20 mg, HCl salt, 0.029 mmol, 1 eq) was dissolved in anhydrous DMF (5 mL). DIEA (0.0067 mL, 0.039 mmol, 1.3 eq) and DCC (12 mg, 0.058 mmol, 2 eq) were added. The reaction was stirred at rt for 24 h. 0.5 N HCl/methanol (0.5 mL) was added. The reaction mixture was added dropwise into ether (500 mL) with vigorous stirring. The yellow precipitates were collected onto a small Celite pad, washed with more ether (10 mL×3), and eluted with methanol (10 mL×3). The yellow methanol solution was concentrated in under reduced pressure to afford the crude product, which was purified by HPLC to yield the desired product Compound 400 as an orange solid (8 mg, 43%): 1H NMR (400 MHz, CD3OD) δ 4.52 (s, 2H), 4.10 (s, 1H), 3.86 (br s, 2H), 2.90-3.50 (m, 8H), 2.37 (t, J=14.6 Hz, 1H), 2.15-2.30 (m, 2H), 1.60-1.70 (m, 1H), 1.08 (d, J=6.7 Hz, 6H); MS (ESI) m/z 573.5 (M+H), calcd for C28H34FN4O8 573.2.
- The following compounds were prepared similarly to Compound 400 using the appropriate intermediate S12-6 or S12-7.
-
- 1H NMR (400 MHz, CD3OD) δ 4.43 (s, 2H), 4.10 (s, 1H), 3.80 (s, 2H), 2.90-3.40 (m, 9H), 2.31-2.41 (m, 1H), 2.22-2.30 (m, 1H), 1.60-1.72 (m, 1H); MS (ESI) m/z 517.4 (M+H), calcd for C24H26FN4O8 517.2.
-
- 1H NMR (400 MHz, CD3OD) δ 4.53 (br s, 2H), 4.17 (s, 1H), 3.87 (br, s, 2H), 2.90-3.30 (m, 12H), 2.32-2.42 (m, 1H), 2.23-2.30 (m, 1H), 1.60-1.72 (m, 1H); MS (ESI) m/z 531.3 (M+H), calcd for C25H28FN4O8 531.2.
-
- 1H NMR (400 MHz, CD3OD) δ 4.65 (d, J=14.4 Hz, 1H), 4.05-4.15 (m, 2H), 3.80 (dd, J=4.3, 9.8 Hz, 1H), 2.90-3.30 (m, 9H), 2.32-2.42 (m, 1H), 2.23-2.30 (m, 1H), 2.10-2.20 (m, 1H), 1.60-1.73 (m, 2H), 1.38-1.45 (m, 1H), 0.92 (d, J=6.7 Hz, 3H), 0.87 (d, J=6.7 Hz, 3H); MS (ESI) m/z 573.4 (M+H), calcd for C28H34FN4O8 573.2.
-
- 1H NMR (400 MHz, CD3OD) δ 4.22 (br s, 1H), 4.11 (s, 1H), 3.96 (br s, 1H), 2.95-3.45 (m, 12H), 2.35-2.45 (m, 1H), 2.20-2.30 (m, 2H), 1.61-1.72 (m, 1H), 1.52-1.60 (m, 1H), 1.42-1.50 (m, 1H), 0.93 (d, J=6.7 Hz, 3H), 0.85 (d, J=6.7 Hz, 3H); MS (ESI) m/z 587.5 (M+H), calcd for C29H36FN4O8 587.2.
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- 1H NMR (400 MHz, CD3OD) δ 4.66 (d, J=14.0 Hz, 1H), 4.11 (s, 1H), 4.09 (d, J=14.0 Hz, 1H), 3.78 (dd, J=4.3, 9.2 Hz, 1H), 2.85-3.30 (m, 9H), 2.30-2.42 (m, 1H), 2.21-2.30 (m, 1H), 2.10-2.20 (m, 1H), 1.58-1.70 (m, 2H), 1.37-1.46 (m, 1H), 0.91 (d, J=6.7 Hz, 3H), 0.85 (d, J=6.7 Hz, 3H); MS (ESI) m/z 573.3 (M+H), calcd for C28H34FN4O8 573.2.
-
- 1H NMR (400 MHz, CD3OD) δ 4.20 (br s, 1H), 4.11 (s, 1H), 3.85 (br s, 1H), 2.95-3.30 (m, 12H), 2.35-2.45 (m, 1H), 2.20-2.30 (m, 2H), 1.61-1.72 (m, 1H), 1.52-1.60 (m, 1H), 1.43-1.51 (m, 1H), 0.93 (d, J=6.7 Hz, 3H), 0.85 (d, J=6.7 Hz, 3H); MS (ESI) m/z 587.3 (M+H), calcd for C29H36FN4O8 587.2.
-
- 1H NMR (400 MHz, CD3OD) δ 4.58 (d, J=13.6 Hz, 1H), 4.40 (d. J=14.4 Hz, 1H), 4.12 (s, 1H), 3.81 (d, J=9.2 Hz, 1H), 4.41 (d, J=9.2 Hz, 1H), 3.17-2.99 (m, 10H), 2.43-2.35 (m, 1H), 2.29-2.26 (m, 1H), 2.05-1.89 (m, 6H), 1.69-1.65 (m, 1H); MS (ESI) m/z 571.1 (M+H), calcd for C28H32FN4O8 571.2.
-
- 1H NMR (400 MHz, CD3OD) δ 4.55 (d, J=14.4 Hz, 1H), 4.41 (d, J=14.4 Hz, 1H), 4.14 (s, 1H), 3.83 (d, J=10.4 Hz, 1H), 4.41 (d, J=10.4 Hz, 1H), 3.13-2.98 (m, 10H), 2.43-2.36 (m, 1H), 2.29-2.26 (m, 1H), 1.99-1.90 (m, 6H), 1.72-1.61 (m, 1H); MS (ESI) m/z 571.1 (M+H), calcd for C28H32FN4O8 571.2.
-
- 1H NMR (400 MHz, CD3OD) δ 4.13 (s, 1H), 3.86 (d, J=8.4 Hz, 1H), 3.22-2.99 (m, 13H), 2.41-2.15 (m, 3H), 1.68-1.62 (m, 1H), 1.06 (d, J=6.4 Hz, 3H), 0.99 (d, J=4.4 Hz, 3H); MS (ESI) m/z 573.0 (M+H), calcd for C28H34FN4O8 573.2.
-
- 1H NMR (400 MHz, CD3OD) δ 4.58 (s, 2H), 4.12 (s, 1H), 3.21-2.86 (m, 13H), 2.42-2.34 (m, 1H), 2.27-2.18 (m, 1H), 1.74-1.62 (m, 1H), 1.30 (s, 6H); MS (ESI) m/z 559.1 (M+H), calcd for C27H32FN4O8 559.2.
-
- 1H NMR (400 MHz, CD3OD) δ 4.64-4.63 (m, 2H), 4.12 (s, 1H), 3.21-2.98 (m, 12H), 2.40-2.33 (m, 1H), 2.28-2.25 (m, 1H), 1.71-1.62 (m, 1H), 1.32-1.29 (m, 4H); MS (ESI) m/z 557.0 (M+H), calcd for C27H30FN4O8 557.2.
-
- 1H NMR (400 MHz, CD3OD) δ 4.57 (s, 2H), 4.11 (s, 1H), 3.06-2.98 (m, 12H), 2.43-2.25 (m, 3H), 1.84-1.55 (m, 6H), 1.32-1.29 (m, 2H); MS (ESI) m/z 585.1 (M+H), calcd for C29H34FN4O8 585.2.
-
- 1H NMR (400 MHz, CD3OD) δ 4.12 (s, 1H), 3.83 (d, J=8.4 Hz, 1H), 3.35-2.84 (m, 14H), 2.40-2.33 (m, 3H), 1.71-1.61 (m, 1H), 1.07-1.06 (d, J=6.4 Hz, 3H), 0.99 (d, J=6.4 Hz, 3H); MS (ESI) m/z 573.0 (M+H), calcd for C28H34FN4O8 573.2.
-
- 1H NMR (400 MHz, CD3OD) 4.11 (s, 1H), 3.85 (d, J=10.0 Hz, 1H), 3.24-2.91 (m, 14H), 2.40-2.16 (m, 3H), 1.70-1.56 (m, 2H), 1.07-1.06 (m, 1H), 0.98-0.83 (m, 6H); MS (ESI) m/z 587.1 (M+H), calcd for C29H36FN4O8 581.2.
-
- 1H NMR (400 MHz, CD3OD) δ 7.26-7.25 (m, 5H), 4.23-4.14 (m, 2H), 4.09 (s, 1H), 3.53 (t, J=10.8 Hz, 1H), 3.14-2.97 (m, 14H), 2.39-2.23 (m, 2H), 1.67-1.60 (m, 1H); MS (ESI) m/z 621.0 (M+H), calcd for C32H34FN4O8 621.2.
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- 1H NMR (400 MHz, CD3OD) δ 4.45 (s, 2H), 4.02 (s, 1H), 3.89 (s, 2H), 3.04-2.87 (m, 9H), 2.60-2.52 (m, 1H), 2.31-2.14 (m, 2H), 1.49 (s, 9H); MS (ESI) m/z 573.2 (M+H), calcd for C28H34FN4O8 573.2.
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- 1H NMR (400 MHz, CD3OD) δ 4.11 (s, 1H), 3.36-3.25 (m, 5H), 3.05-2.97 (m, 9H), 2.48-2.36 (m, 1H), 2.27-2.24 (m, 1H), 1.74-1.62 (m, 1H), 1.48 (d, J=6.0 Hz, 3H); MS (ESI) m/n 545.0 (M+H), calcd for C26H30FN4O8 545.2.
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- 1H NMR (400 MHz, CD3OD) δ 4.12 (s, 1H), 3.25-2.86 (m, 14H), 2.43-2.25 (m, 2H), 1.71-1.61 (m, 1H), 1.49 (d, J=6.0 Hz, 3H); MS (ESI) m/z 545.0 (M+H), calcd for C26H30FN4O8 545.2.
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- 1H NMR (400 MHz, CD3OD) δ 4.11 (s, 3H), 3.90 (d, J=7.6 Hz, 1H), 3.25-2.97 (m, 14H), 2.41-2.25 (m, 2H), 1.71-1.61 (m, 1H); MS (ESI) m/z 561.4 (M+H), calcd for C26H30FN4O9 561.2.
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- 1H NMR (400 MHz, CD3OD) δ 4.09 (s, 1H), 3.85 (d, J=9.6 Hz, 1H), 3.19-2.95 (m, 12H), 2.39-2.32 (m, 2H), 2.24-2.19 (m, 1H), 1.69-1.52 (m, 4H), 1.51-1.28 (m, 1H), 1.16-1.14 (m, 2H), 0.97-0.95 (m, 6H); MS (ESI) m/z 587.3 (M+H), calcd for C29H36FN4O8 587.2.
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- 1H NMR (400 MHz, CD3OD) δ 7.26-7.25 (m, 5H), 4.17-4.11 (m, 3H), 3.53 (t, J=10.8 Hz, 1H), 3.15-2.97 (m, 14H), 2.38-2.24 (m, 2H), 1.66-1.63 (m, 1H); MS (ESI) m/z 621.0 (M+H), calcd for C32H34FN4O8 621.2.
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- 1H NMR (400 MHz, CD3OD) δ 4.51 (d, J=12.8 Hz, 1H), 4.20 (d, J=12.8 Hz, 1H), 4.11 (s, 1H), 3.84 (t, J=11.2 Hz, 1H), 3.21-2.81 (m, 11H), 2.37-2.33 (m, 4H), 2.06-2.04 (m, 2H), 1.71-1.64 (m, 1H); MS (ESI) m/z 557.3 (M+H), calcd for C27H30FN4O8 557.2.
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- 1H NMR (400 MHz, CD3OD) δ 4.48-4.46 (m, 1H), 4.18 (d, J=13.6 Hz, 1H), 4.12 (s, 1H), 3.86-3.83 (m, 1H), 3.35-3.29 (m, 2H), 3.24-2.97 (m, 9H), 2.81-2.77 (m, 2H), 2.38-2.24 (m, 3H), 2.12-2.01 (m, 2H), 1.66 (m, 1H); MS (ESI) m/z 557.0 (M+H), calcd for C27H30FN4O8 557.2.
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- 1H NMR (400 MHz, CD3OD) δ 5.52, 5.40 (m, 1H Total), 4.63 (d, J=14.0 Hz, 1H), 4.52 (d, J=14.0 Hz, 1H), 4.10 (s, 1H), 4.06-3.97 (m, 1H), 3.86-3.81 (m, 1H), 3.04-2.96 (m, 10H), 2.60-2.48 (m, 1H), 2.49-2.26 (m, 3H), 1.69-1.59 (m, 1H); MS (ESI) m/z 575.1 (M+H), calcd for C27H29F2N4O8 575.2.
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- 1H NMR (400 MHz, CD3OD) δ 4.72-4.62 (m, 2H), 4.28-4.17 (m, 1H), 4.12 (s, 1H), 3.75-3.67 (m, 1H), 3.49-3.40 (m, 1H), 3.28-2.94 (m, 10H), 2.42-2.33 (m, 1H), 2.31-2.22 (m, 1H), 2.09-1.99 (m, 1H), 1.71-1.60 (m, 1H), 1.39-1.34 (m, 1H); MS (ESI) m/z 573.1 (M+H), calcd for C27H30F2N4O9 573.2.
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- 1H NMR (400 MHz, CD3OD) δ 4.72-4.62 (m, 2H), 4.21 (d, J=13.2 Hz, 1H), 4.13 (s, 1H), 3.72 (d, J=13.2 Hz, 1H), 3.49-3.40 (m, 1H), 3.27-2.94 (m, 10H), 2.40-2.22 (m, 2H), 2.10-1.99 (m, 2H), 1.71-1.60 (m, 1H); MS (ESI) m/z 573.0 (M+H), calcd for C27H30F2N4O9 573.2.
-
- To a 250 mL round bottom flask was added compound S1-4 (14.47 g, 56.30 mmol, 1.0 equiv, crude), tetrabutylammonium bromide (0.90 g, 2.80 mmol, 0.05 equiv), 1,2-dichloroethane (60 mL), and water (60 mL). The clear bi-layer was cooled in a 20° C. water bath. Nitric acid (7.2 mL, 70 wt %, 112.60 mmol, 2.0 equiv) was added. After the addition, the reaction temperature slowly rose to 26° C. The reaction was stirred at room temperature overnight (19 hrs). TLC (heptane/EtOAc=9.5/0.5) showed the reaction was complete. The organic layer was separated, washed with water (60 mL×2) and brine, and dried over anhydrous sodium sulfate. The solvent was removed to give compound S13-1 as a brown oil, which solidified on standing (17.71 g, quantitative). The crude product was used directly for the next step.
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- To a 250 mL round bottom flask was added compound S13-1 (17.7 g, 56.30 mmol 1.0 equiv), acetone (177 mL), anhydrous potassium carbonate (15.6 g, 113.00 mmol, 2.0 equiv), and potassium iodide (0.47 g, 2.80 mmol, 0.05 equiv). To the stirred suspension at room temperature was added benzyl bromide (7.03 mL, 59.10 mmol, 1.05 equiv). The suspension was then heated to 56° C. for 4 hrs. TLC (heptane/EtOAc=9/1) showed the reaction was complete. The solid was removed by filtration and washed with acetone (30 mL). The filtrated was concentrated to give a paste. The paste was partitioned between methyl t-butyl ether (MTBE, 120 mL) and water (80 mL). The organic layer was washed with water (80 mL) and brine, dried over anhydrous sodium sulfate, and concentrated to give compound S13-2 as a brown oil (21.09 g, 98%). The crude product was used directly for the next step.
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- To a 1 L round bottom flask was added compound S13-2 (21.08 g, 55.40 mmol, 1.0 equiv) and THF (230 mL). The solution was cooled in a cold water bath to 10° C. To another 500 mL round bottom flask containing water (230 mL), sodium hydrosulfite (Na2S2O4, 56.7 g, 276.80 mmol, 5.0 equiv) was added slowly with stirring. The aqueous solution of sodium hydrosulfite was added to the THF solution of compound S13-2. The temperature quickly rose from 10° C. to 20.4° C. after the addition. The yellow suspension was stirred while the cold water bath slowly warmed up to room temperature overnight to give an orange cloudy solution. The reaction temperature during this period was between 15° C. to 19° C. TLC (heptane/EtOAc=9/1) showed the reaction was complete. The orange cloudy solution was diluted with EtOAc (460 mL). The organic layer was washed with water (150 mL×2) and brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure to give the crude product as a brown oil. The crude product was purified by flash silica gel column eluted with heptane/EtOAc 9/1 to yield the desired product 513-3 (15.83 g, 80%, 3 steps).
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- To compound S13-3 5.50 g, 16.65 mmol, 1 eq in DMF (30 mL) was added Boc2O (8.54 g, 39.13 mmol, 2.5 eq), DIEA (8.18 mL, 46.96 mmol, 3 eq), and DMAP (102 mg, 0.84 mmol, 0.05 eq). The reaction solution was stirred at rt for overnight, diluted with ethyl acetate (300 mL), washed with water (500 mL), saturated aqueous sodium bicarbonate (100 mL) and brine (100 mL), dried over sodium sulfate, and concentrated under reduced pressure. Flash column chromatography on silica gel (0%→5% ethyl acetate/hexanes) yielded the desired product S13-4 as a white solid (6.12 g, 71%): Rf 0.80 (20% ethyl acetate/hexanes); MS (electrospray) m/z 574.3 (M+Na), calcd for C31H34FNNaO7 574.2.
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- To diisopropylamine (1.70 mL, 12.00 mmol, 1.2 eq) in THF (10 mL) at −78° C. was added nBuLi (4.80 mL, 2.5 M/hexane, 12.00 mmol, 1.2 eq) dropwise. The reaction was stirred at 0° C. for 10 min and re-cooled to −78° C. Compound S13-4 (5.52 g, 10.00 mmol, 1 eq) in THF (10 mL) was added dropwise over a period of 5 min. The resulting deep orange solution was stirred at −78° C. for 30 min. Anhydrous DMF (0.98 mL, 12.50 mmol, 1.25 eq) was added dropwise. The resulting light yellow solution was stirred at −78° C. for 30 min. Acetic acid (0.90 mL) was added at −78° C. The reaction was warmed to rt, diluted with saturated aqueous sodium bicarbonate (100 mL), and extracted with ethyl acetate (50 mL×3). The organic extracts were combined, dried over sodium sulfate, and concentrated under reduced pressure. Flash column chromatography with ethyl acetate/hexanes (0%→10%) yielded the desired product S13-5 as an orange foam (2.04 g, 43%): Rf 0.45 (20% ethyl acetate/hexane); MS (electrospray) m/z 534.3 (M+CH3OH+Na), calcd for C28H30FNNaO7 534.2.
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- To compound S13-5 (1.00 g, 2.08 mmol, 1 eq) in 1,2-dichloroethane (10 mL) was added (R)-(−)-leucinol (0.27 g, 2.30 mmol, 1.1 eq), acetic acid (0.30 mL, 5.24 mmol, 2.5 eq), and sodium triacetoxyborohydride (0.66 g, 3.11 mmol, 1.5 eq). The reaction mixture was stirred at rt for 1 h, diluted with ethyl acetate (50 mL), washed with saturated aqueous sodium bicarbonate (50 mL) and brine (50 mL), dried over sodium sulfate, and concentrated under reduced pressure to give the crude product as a yellow solid (quantitative): Rf 0.55 (ethyl acetate); MS (electrospray) m/z 581.1 (M+H), calcd for C33H42FN2O6 581.3.
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- To compound S13-6-1 (0.52 g, 0.90 mmol) in acetonitrile (20 mL) was added sodium bicarbonate (0.16 g, 1.95 mmol, 2.2 eq), allyl bromide (0.15 mL, 1.80 mmol, 2.0 eq), and tetrabutylammonium iodide (33 mg, 0.09 mmol, 0.1 eq). The reaction mixture was heated at 70° C. for 24 h, cooled to rt, diluted with water (100 mL), and extracted with ethyl acetate (100 mL×1, 50 mL×2). The ethyl acetate extracts were combined, dried over sodium sulfate, and concentrated under reduced pressure. Flash column chromatography on silica gel (0%→60% ethyl acetate/hexanes) yielded the desired product S13-7-1 as a white solid (0.37 g, 66%): Rf 0.60 (30% ethyl acetate/hexane); 1H NMR (400 MHz, CDCl3) δ 7.25-7.35 (m, 8H), 7.06 (d, J=8.6 Hz, 2H), 5.70-5.81 (m, 1H), 5.18 (d, J=17.1 Hz, 1H), 5.10 (d, J=10.4 Hz, 1H), 5.00 (d, J=10.4 Hz, 1H), 4.85 (d, J=10.4 Hz, 1H), 3.45-3.80 (m, 4H), 3.10-3.28 (m, 1H), 2.99 (dd, J=8.0, 14.0 Hz, 1H), 2.80-2.90 (m, 1H), 2.33 (d, J=2.4 Hz, 3H), 1.43 (s, 9H), 1.35-1.60 (m, 2H), 1.05-1.15 (m, 1H), 0.90 (d, J=6.7 Hz, 3H), 0.87 (d, J=6.7 Hz, 3H); MS (electrospray) m/z 621.5 (M+H), calcd for C36H46FN2O6 621.3.
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- To compound S13-7-1 (0.35 g, 0.56 mmol, 1 eq) in methylene chloride (10 mL) was added triethylamine (0.16 mL, 1.15 mmol, 2 eq), DMAP (14 mg, 0.11 mmol, 0.2 eq), and methanesulfonyl chloride (65 μL, 0.84 mmol, 1.5 eq). The reaction solution was stirred at rt for 1 h, diluted with ethyl acetate (100 mL), washed with saturated aqueous sodium bicarbonate (50 mL×2) and brine (50 mL), dried over sodium sulfate, and concentrated under reduced pressure. Flash column chromatography on silica gel (0%→0.60 (20% ethyl acetate/hexane); 1H NMR (400 MHz, CDCl3) δ 7.97, 7.83 (br s, 1H, combined), 7.20-7.50 (m, 8H), 7.05 (d, J=7.3 Hz, 2H), 5.90-6.08 (m, 1H), 5.19-5.20 (m, 2H), 4.92-5.03 (m, 2H), 3.94-4.02, 3.45-3.75, 3.15-3.30, 3.00-3.10, 2.55-2.80 (m, 7H combined), 2.33 (d, J=1.8 Hz, 3H), 1.30-1.90 (m, 3H), 1.46 (s, 9H), 0.80-0.92 (m, 6H); MS (electrospray) m/z 639.2 (M+H), calcd for C36H45ClFN2O5 639.3.
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- To compound S13-8-1 (0.22 g, 0.34 mmol, 1 eq) in anhydrous DMF (15 mL) was added tetrabutylammonium iodide (25 mg, 0.068 mmol, 0.2 eq) and sodium hydride (27 mg, 60% in mineral oil, 0.68 mmol, 2 eq). The reaction mixture was stirred at rt for 5 h, diluted with ethyl acetate (200 mL), washed with saturated aqueous sodium bicarbonate (200 mL), water (200 mL) and brine (100 mL), dried over sodium sulfate, and concentrated under reduced pressure. Flash column chromatography on silica gel (0%→8% ethyl acetate/hexanes) yielded the desired product S13-9-1 as a colorless oil (85 mg, 42%): Rf 0.75 (15% ethyl acetate/hexane); 1H NMR (400 MHz, CDCl3) mixture of tautomers, complex; MS (electrospray) m/z 603.5 (M+H), calcd for C36H44FN2O5 603.3.
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- To diisopropylamine (44 μL, 0.31 mmol, 2.2 eq) in anhydrous THF (1 mL) at −78° C. was added nBuLi (0.20 mL, 1.6 M/hexanes, 0.32 mmol, 2.2 eq) dropwise. The reaction solution was stirred at 0° C. for 10 min and re-cooled to −78° C. TMEDA (53 μL, 0.35 mmol, 2.5 eq) was added, followed by dropwise addition of compound S13-9-1 (85 mg, 0.14 mmol, 1 eq) in anhydrous THF (2 mL) over a period of 3 min. The resulting deep red solution was stirred at −78° C. for 30 min. Enone S7-1 (68 mg, 0.14 mmol) in anhydrous THF (2 mL) was added dropwise. The resulting light brown solution was gradually warmed up with stirring from −78° C. to −20° C. over a period of 1 h. Acetic acid (0.1 mL) was added. The reaction mixture was diluted with ethyl acetate, washed with saturated aqueous sodium bicarbonate (50 mL) and brine (50 mL), dried over sodium sulfate, and concentrated under reduced pressure. Flash column chromatography on silica gel (0%→20% ethyl acetate/hexanes) yielded the desired product S13-10-1 as a yellow oil (103 mg, 74%): Rf 0.20 (10% ethyl acetate/hexane); 1H NMR (400 MHz, CDCl3) mixture of tautomers, complex; MS (electrospray) m/z 991.8 (M+H), calcd for C56H72FN4O9Si 991.5.
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- To compound S13-10-1 (21 mg, 0.021 mmol) in THF (1 mL) was added 48% aqueous HF (1 mL). After stirring at rt for overnight, the yellow reaction solution was slowly added to 25% aqueous K2HPO4 (40 mL) with rapid stirring. The mixture was extracted with ethyl acetate (20 mL×3). The organic extracts were combined, dried over sodium sulfate, and concentrated under reduced pressure to give the crude product as a yellow residue: MS (electrospray) m/z 777.6 (M+H), calcd for C56H72FN4O9Si 777.4.
- To the above intermediate in methanol (3 mL) and 1,4-dioxane (1 mL) was added 0.5 M HCl/methanol (1 mL) and 10% Pd—C (9 mg, 0.004 mmol, 0.2 eq). The mixture was purged with hydrogen and stirred under 1 atm hydrogen atmosphere at rt for 2 h. The catalyst was filtered off with a small Celite pad and washed with methanol (1 mL×3). The filtrate was concentrated under reduced pressure. Preparative HPLC purification yielded the desired product Compound 427 as a bright yellow solid (4.1 mg, 33% overall): 1H NMR (400 MHz, CD3OD) δ 4.83 (s, 1H), 4.66 (s, 1H), 4.08 (s, 1H), 2.80-3.70 (m, 15H), 2.05-2.30 (m, 1H), 1.70-1.90 (m, 3H), 1.45-1.75 (m, 1H), 0.97-1.10 (m, 9H); MS (electrospray) m/z 601.5 (M+H), calcd for C31H42FN4O7 601.3.
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- To compound S13-10-1 (80 mg, 0.081 mmol, 1 eq) in methylene chloride (2 mL) was added N,N-dimethylbarbituric acid (31 mg, 0.25 mmol, 3 eq) and Pd(PPh3)4 (4.7 mg, 0.004 mmol, 0.05 eq). The reaction mixture was degassed by bubbling nitrogen through for 2 min and heated at 40° C. with stirring for 24 h. Stirring was continued at rt for another 24 h. Saturated aqueous sodium bicarbonate (10 mL) was added. The mixture was extracted with ethyl acetate (10 mL×3). The organic extracts were combined, dried over sodium sulfate, and concentrated under reduced pressure to yield the crude product as a yellow solid: MS (electrospray) m/z 951.8 (M+H), calcd for C53H68FN4O9Si 951.5.
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- Prepared from compound S13-12-1 (0.027 mmol) using similar procedures for Compound 427 (orange solid, 4.6 mg, 30% overall): 1H NMR (400 MHz, CD3OD) δ 4.56 (d, J=15.9 Hz, 1H), 4.36 (d, J=15.9 Hz, 1H), 4.08 (s, 1H), 3.75 (dd, J=3.6, 15.3 Hz, 1H), 3.60-3.68 (m, 1H), 2.85-3.15 (m, 11H), 2.15-2.25 (m, 1H), 1.50-1.85 (m, 4H), 1.03 (d, J=6.7 Hz, 3H), 1.00 (d, J=6.7 Hz, 3H); MS (electrospray) m/z 559.5 (M+H), calcd for C28H36FN4O7 559.3.
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- To compound S13-12-1 (0.054 mmol) in 1,2-dichloroethane (5 mL) was added acetic acid (10 μL, 0.17 mmol, 3 eq), formaldehyde (8 μL, 36.5% aqueous solution, 0.11 mmol, 2 eq), and sodium triacetoxyborohydride (27 mg, 0.13 mmol, 2.5 eq). The reaction mixture was stirred at rt for 4 h. Additional formaldehyde (8 μL, 36.5% aqueous solution, 0.11 mmol, 2 eq) and sodium triacetoxyborohydride (10 mg, 0.048 mmol, 0.9 eq) were added. The reaction mixture was stirred at rt for another 20 min. Saturated aqueous sodium bicarbonate (20 mL) was added. The mixture was extracted with ethyl acetate (20 mL×3). The organic extracts were combined, dried over sodium sulfate, and concentrated under reduced pressure to yield the crude product as a yellow solid: MS (electrospray) m/z 965.4 (M+H), calcd for C54H70FN4O9Si 965.5.
- The above intermediate was then deprotected using similar procedures for Compound 427 to give the desired product Compound 429 as an orange solid (5.6 mg, 15% overall): 1H NMR (400 MHz, CD3OD) δ 4.55-5.00 (m, 2H), 4.09 (s, 1H), 3.45-3.85 (m, 4H), 2.85-3.20 (m, 12H), 2.05-2.30 (m, 2H), 1.50-1.85 (m, 3H), 1.00-1.10 (m, 6H); MS (electrospray) m/z 573.5 (M+H), calcd for C29H38FN4O7 573.3.
- The antibacterial activities for the compounds of the invention were studied according to the following protocols.
- MICs were determined according to the Clinical and Laboratory Standards Institute (CLSI) guidances (e.g., CLSI. Performance standards for antimicrobial susceptibility testing; nineteenth information supplement. CLSI document M100-S19, CLSI, 940 West Valley Road, Suite 1400, Wayne, Pa. 19087-1898, USA, 2009). Briefly, frozen bacterial strains were thawed and subcultured onto Mueller Hinton Broth (MHB) or other appropriate media (Streptococcus requires blood and Haemophilus requires hemin and NAD). Following incubation overnight, the strains were subcultured onto Mueller Hinton Agar and again incubated overnight. Colonies were observed for appropriate colony morphology and lack of contamination. Isolated colonies were selected to prepare a starting inoculum equivalent to a 0.5 McFarland standard. The starting inoculum was diluted 1:125 (this is the working inoculum) using MHB for further use. Test compounds were prepared by dilution in sterile water to a final concentration of 5.128 mg/mL. Antibiotics (stored frozen, thawed and used within 3 hours of thawing) and compounds were further diluted to the desired working concentrations.
- The assays were run as follows. Fifty μL of MHB was added to wells 2-12 of a 96-well plate. One hundred μL of appropriately diluted antibiotics was added to well 1. Fifty μL of antibiotics was removed from well 1 and added to well 2 and the contents of well 2 mixed by pipetting up and down five times. Fifty μL of the mixture in well 2 was removed and added to well 3 and mixed as above. Serial dilutions were continued in the same manner through well 12. Fifty μL was removed from well 12 so that all contained 50 μL. Fifty μL of the working inoculum was then added to all test wells. A growth control well was prepared by adding 50 μL of working inoculum and 50 μL of MHB to an empty well. The plates were then incubated at 37° C. overnight, removed from the incubator and each well was read on a plate reading mirror. The lowest concentration (MIC) of test compound that inhibited the growth of the bacteria was recorded.
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1 2 3 4 5 6 7 8 9 10 11 12 [Abt] 32 16 8 4 2 1 0.5 0.25 0.125 0.06 0.03 0.015 Growth − − − − − + + + + + + + [abt] = antibiotic concentration in the well in μg/ml Growth = bacterial growth (cloudiness) Interpretation: MIC = 2 μg/mL - Fifty 50 μl of the inoculum was pipetted into well 1. Ninety μl of sterile 0.9% NaCl was pipetted into wells 2-6 of a 96-well microtiter plate. Ten μL from was removed from well 1 and added it to well 2 followed by mixing. Ten μL was removed from well two and mixed with the contents of well 3 and so on creating serial dilutions through well 6. Ten μL was removed from each well and spotted onto an appropriate agar plate. The plate was placed into an incubator overnight. The colonies in spots that contain distinct colonies were counted. Viable count was calculated by multiplying the number of colonies by the dilution factor.
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Spot from Well 1 2 3 4 5 6 Dilution 102 103 104 105 106 107 Factor - The following bacterial strains, listed below, were examined in minimum inhibitory concentration (MIC) assays.
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STRAIN ORGANISM DESIGNATION KEY PROPERTIES Staphylococcus aureus SA100 ATCC 13709, MSSA, Smith strain Staphylococcus aureus SA101 ATCC 29213, CLSI quality control strain, MSSA Staphylococcus aureus SA191 HA-MRSA, tetracycline-resistant, lung infection model isolate Staphylococcus aureus SA161 HA-MRSA, tetracycline-resistant, tet(M) Staphylococcus aureus SA158 Tetracycline-resistant tet(K) aaaureusaureus Staphylococcus epidermidis SE164 ATCC 12228, CLSI quality control strain, tetracycline-resistant Enterococcus faecalis EF103 ATCC 29212, tet-I/R, control strain Enterococcus faecalis EF159 Tetracycline-resistant, tet(M) Streptococcus pneumoniae SP106 ATCC 49619, CLSI quality control strain Streptococcus pneumoniae SP160 Tetracycline-resistant, tet(M) Streptococcus pyogenes SP312 2009 clinical isolate, tet(M) Streptococcus pyogenes SP193 S. pyogenes for efficacy models; tetS; sensitive to sulfonamides Haemophilus influenzae HI262 Tetracycline-resistant, ampicillin- resistant Moraxella catarrhalis MC205 ATCC 8176, CLSI quality control strain Escherichia coli EC107 ATCC 25922, CLSI quality control strain Escherichia coli EC155 Tetracycline-resistant, tet(A) Enterobacter cloacae EC108 ATCC 13047, wt Klebsiella pneumoniae KP109 ATCC 13883, wt Klebsiella pneumoniae KP153 Tetracycline-resistant, tet(A), MDR, ESBL+ Klebsiella pneumoniae KP457 2009 ESBL+, CTX-M, OXA Proteus mirabilis PM112 ATCC 35659 Pseudomonas aeruginosa PA111 ATCC 27853, wt, control strain Pseudomonas aeruginosa PA169 Wt, parent of PA170-173 Pseudomonas aeruginosa PA173 PA170 ΔmexX; MexXY-(missing a functional efflux pump) Pseudomonas aeruginosa PA555 ATCC BAA-47, wild type strain PAO1 Pseudomonas aeruginosa PA556 Multiple-Mex efflux pump knockout strain Acinetobacter baumannii AB110 ATCC 19606, wt Acinetobacter baumannii AB250 Cystic fibrosis isolate, MDR Stenotrophomonas maltophilia SM256 Cystic fibrosis isolate, MDR Burkholderia cenocepacia BC240 Cystic fibrosis isolate, MDR *MDR, multidrug-resistant; MRSA, methicillin-resistant S. aureus; MSSA, methicillin-sensitive S. aureus; HA-MRSA, hospital-associated MRSA; tet(K), major gram-positive tetracycline efflux mechanism; tet(M), major gram-positive tetracycline ribosome-protection mechanism; ESBL+, extended spectrum β-lactamase - Values of minimum inhibition concentration (MIC) for the compounds of the invention are provided in Tables 5-7.
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TABLE 5 MIC Values for Compounds of the Invention Compared to Sancycline, Minocycline and Tigecycline. A = lower than or equal to lowest MIC among three control compounds; B = greater than lowest MIC among three control compounds, but lower than highest MIC among three control compounds; C = greater than MIC of all three control compounds. Cmpd SA101 SA100 SA161 SA158 EF103 EF159 SP106 SP160 No. 29213 13709 MRSAtetM tetK 29212 tetM 49619 tetM 100 B B B B B B B B 101 B B B B B B C B 102 C B B B B B B B 104 C C B B B B B B 105 B B C B B B B B 106 B B B B B B B B 107 B B B B B B B B 108 C C B B B B B B 109 C C B B B B B B 110 B B B B B B B B 111 C B B B B B B B 117 C C B B B B B B 118 B B B B B B B B 120 B B B B B B B B 121 B B B B B B B B 123 B B B B B B B B 129 B B B B B B B B 130 B B B B B B B B 131 B B B B B B B B 133 C B B B B B C B 134 B B B B B B B B 136 C B B B B B B B 137 B B B B B B B B 139 B B B B B B B B 140 B B B B B B B B 142 B B B B B B B B 143 B B B B B B B B 144 B B B B B B B B 146 C C B B B B B B 147 B B B B B B B B 149 B B B B B B B B 150 B B B B B B B B 200 C C B NT B B B B 201 B B B B B B C B 202 C B B B B B B B Cmpd EC107 EC155 AB110 PA111 EC108 KP109 KP153 No. 25922 tetA 19608 27853 13047 13883 tetA 100 B B A B B B B 101 B B C B C B B 102 B B B B B B B 104 B B C B B B B 105 B C C B B B B 106 B B B B B B B 107 B B B B B B B 108 B B C B C B B 109 B B C B B B B 110 B B A B B B B 111 B B C B B B B 117 B B B B B B B 118 B B A B B B B 120 B B A B B B B 121 B B A B B B B 123 B B A B B B B 129 B B A B B B B 130 B B A B B B B 131 B B C B B B B 133 B C C B C B C 134 B B B B B B B 136 B C C B B B B 137 B B B B B B B 139 B B C B B B B 140 B C C B C B C 142 B B A B B B B 143 B B A B B B B 144 B B A B B B B 146 B B C B B B B 147 B B C B B B B 149 B B A B B B B 150 B B C B B B B 200 B B C B B B B 201 B B C B B B B 202 B B C B C B B -
TABLE 6 MIC Values for Compounds of the Invention Compared to Sancycline, Minocycline and Tigecycline. A = lower than or equal to lowest MIC among three control compounds; B = greater than lowest MIC among three control compounds, but lower than highest MIC among three control compounds; C = greater than MIC of all three control compounds. Cmpd SA101 SA100 SA161 SA158 SE164 EF159 SP106 SP160 SP193 HI262 No. 29213 13703 tetM tetK 12228 tetM 49619 tetM 8668 33923 112 C B B B A B A B B C 113 C B B B B B A B B B 114 B B B B B B A B B C 115 B B B B A B A B B B 116 C B B B B B B B C C 119 B B B B B B A B B C 122 C B B B B B B B C C 125 B B B B A B A B B A 126 B B B B B B A B B A 128 B B B B B B A B A B 132 B B B B A B A B A B 138 B B B B B B A B A A 141 C A B B B B A B A A 145 B B B B A B A B A B 148 B B B B A B A B A B 300 C B B B B B NT B C C 301 C B B B B B B B C C 302 C C C B B B C B C C 303 C B B B B B NT B C NT 304 C B B B B B B B B C 305 C C B B B B B B C C 306 C B B B B B C B C C 307 C B B B B B B B B C 308 C B B B B B B B B C 400 B A B B NT A B B NT NT 403 C B B B NT B B B NT NT 405 B A B B B B A B B A 406 B A B A B B A B B A 407 C NT B B B B A B NT C 408 B B B B A B B B B C 409 C NT B B B B A B NT C 411 B B B B NT B B B NT NT 412 A A B A A B A A A A 413 C NT B B B B A B NT C 415 B B C B NT C B B NT NT 416 A A B B NT B B B NT NT 419 A A B B NT B B A NT NT 420 C B B B NT B B B NT NT 421 B A B A A B A A A B 423 C C B B B B B B C A 424 C B B B B B A B B C 426 B B B B NT B B B NT NT 427 B B B B B B B B B C 428 A A A A NT B B A NT NT 429 B B B B B B B B B C Cmpd MC205 EC107 EC155 KP153 PM112 No. 8176 25922 tetA tetA 35659 PA169 PA173 AB250 SM256 BC240 112 C B B B B C B A C C 113 C B B B C C B A C B 114 B B B B B C B A C C 115 C B B B C C B B C C 116 C C B C C C B B C C 119 C B B B B C B A C C 122 C C C C C C B C C C 125 B B B B B C NT A B B 126 B B B B B B B A B B 128 C B B B B C B A C B 132 B B B B B B B A C B 138 B B B B B C B A C B 141 B B B B B C B A C B 145 B B B B B C B A C B 148 C B B B B C B A C B 300 C B B B B B B A C C 301 B B B B C B B B C C 302 C C B B C B B C C C 303 B C B B C B B C C C 304 C B B B B B B A C C 305 C B B B C B B C C C 306 B B B B C B B C C C 307 C B B B B B B A C C 308 C B B B C B B C C C 400 NT B B B NT NT NT NT NT NT 403 NT B B B NT NT NT NT NT NT 405 B B C C B C B B C C 406 B B C C B A B C C C 407 C C C C C NT NT C C C 408 C B B B B B B A C B 409 C C C C C NT NT C C C 411 NT B B C NT NT NT NT NT NT 412 A B C C B C B A C B 413 C C C C C NT NT C C C 415 NT B C C NT NT NT NT NT NT 416 NT B C C NT NT NT NT NT NT 419 NT B B B NT NT NT NT NT NT 420 NT C C C NT NT NT NT NT NT 421 B B B B C B B A C C 423 C C C C C C B C C C 424 C C C C C C B C C C 426 NT B C C NT NT NT NT NT NT 427 C B B B B C B A C C 428 NT B B C NT NT NT NT NT NT 429 B B B B C C B A C B -
TABLE 7 MIC Values for Compounds of the Invention Compared to Sancycline, Minocycline and Tigecycline. A = lower than or equal to lowest MIC among three control compounds; B = greater than lowest MIC among three control compounds, but lower than highest MIC among three control compounds; C = greater than MIC of all three control compounds. Cmpd SA101 SA161 SA158 SE164 EF159 SP106 SP160 SP312 HI262 MC205 No. 29213 SA191 tetM tetK 12228 tetM 49619 tetM tetM 33929 8176 103 C B B B A B A B B C C 124 C B B B A B A B B B C 127 C B B B A B A B B B C 135 B B B B A B A B B A B 401 C B B B B B B B B C C 402 C B C B B B B B B C C 404 C B C B B B A B B A C 410 B A B A A A A B B A B 414 C C C B C C C C C C C 417 C C C B B B C B B A C 418 C C C B B C B B B C C 422 B B B A A B A B B B B 425 C B B B B B B B B C C Cmpd EC107 EC155 KP153 PM112 No. 25922 tetA tetA KP457 35659 PA555 PA556 AB250 SM256 BC240 103 B B B NT C C C B C C 124 B B B NT C C C A C C 127 B B B NT C C C A C C 135 B B B NT B C B A C C 401 C C C C C C C C C C 402 C B B C C B C C C C 404 B C C C B C C C C C 410 B B B C C C B C C C 414 C C C C C C C C C C 417 C C C C C C C C C C 418 C C C C C C C C C C 422 B C C C C C C B C C 425 C C C C C C C C C C - Compounds were screened for antibacterial activity in vivo in a mouse systemic infection (septicemia) model. In the model, CD-1 female mice (18-22 grams) were injected IP with a S. aureus Smith inoculum that results in 0%, survival within 24 to 48 hours. The bacterial dose required to achieve this effect was previously been established through virulence studies. At one hour post infection, mice received either 3 mg/ml IV or 30 mg/ml PO. Typically, six mice were treated per dose group. Animal survival was assessed and recorded for 48 hours. Percent survival at 48 hours was recorded for each compound in Table 8.
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TABLE 8 Percent survival at 48 hours for tested compounds. Cmpd No. IV (3 mg/kg) PO (30 mg/kg) 102 100% 83% 143 83% 100% 130 33% 83% 123 33% 67% 132 50% 50% 106 17% 20% 137 33% 33% 131 100% 17% 147 83% 0% 118 17% 50% 129 50% 0% 150 0 0 144 50% 0% 110 33% 50% 149 17% 0% 125 100% 33% 119 83% 75% 112 100% 20% 126 83% 100% 128 17% 0% 115 100% 100% 103 83% 100% 135 100% 100% 304 0% 17% 410 100% 50% 419 100% 40% 416 100% 20% 400 100% 0% 428 50% 0% 412 100% 40% 406 100% 40% 408 100% 0% - Compounds were tested in a neutropenic BALB/c murine model of lung infection challenged with tetracycline-resistant tet(M) S. pneumoniae strain SP160. Mice were made neutropenic by pre-treatment with cyclophosphamide and infected with SP160 via intranasal administration. Mice were dosed orally with 30 mg/kg compound or IV with 10 mg/kg compound at 2 and 12 hours post-infection. At 24 hours following initiation of treatment, mice were euthanized and bacterial reduction in the lung was quantified by plating lung homogenates. Data was recorded as log10 reduction in lung colony forming units versus an untreated control group. The results of the testing are shown in
FIG. 1 . -
FIG. 1 shows that Compounds 102 and 135 were as orally efficacious (reduced the bacterial burden in the lung) as linezolid in the S. pneumoniae SP160 lung model; andCompounds Compound 102 was also efficacious when administered intravenously (IV); linezolid did not substantially reduce the lung bacterial burden when administered as a control at 5 mg/kg IV. Doxycycline was ineffective, as S. pneumoniae SP160 is tetracycline-resistant, carrying a tet(M) ribosomal protection mechanism. -
Compound 102 was tested in an immunocompetent CD-1 murine model of lung infection challenged with S. pneumoniae strain SP514. Mice were infected with SP514 via intranasal administration and dosed orally with 30 mg/kg compound at 5, 24 and 36 hours post-infection. At 48 hours following initiation of treatment, mice were euthanized and bacterial reduction in the lung was quantified by plating lung homogenates. Data was recorded as log10 reduction in lung colony forming units versus an untreated control group. - In this model, orally dosed
Compound 102 produced a 6.14+/−0.66 log10 reduction in CFU versus the 48 hour untreated control (FIG. 2 ). Linezolid as a comparator produced a 3.56±0.63 log10 reduction (FIG. 2 ). - Compounds were tested in a neutropenic BALB/c murine model of lung infection challenged with a tetracycline-resistant tet(M) MRSA strain SA191 infected via intranasal administration. At 2 and 12 hours mice were either dosed orally with 50 mg/kg compound or via IV administration, at 10 mg/kg. At 24 hours following initiation of treatment, mice were euthanized and bacterial reduction in the lung was quantified by plating lung homogenates. Data was recorded as log10 reduction in lung colony forming units versus an untreated control group. The results of the testing are shown in
FIG. 3 . -
FIG. 3 shows that Compounds 102, 143 and 130 were as orally efficacious (reduced the bacterial burden in the lung) as linezolid in the MRSA SA191 lung model.Compound 102 was more efficacious when administered intravenously (IV) than linezolid was. Tetracycline was ineffective as the MRSA strain SA191 is tetracycline-resistant, carrying a tet(M) ribosomal protection mechanism. -
Compound 102 was tested in a rat lung infection challenged with H. influenzae via intratracheal administration. At 5, 24, and 48 hours rats were dosed orally with 100 mg/kg compound and azithromycin was dosed at 50 mg/kg. For IV administration,Compound 102 was dosed at 25 mg/kg at 5, 24 and 48 hours. At 72 hours following initiation of treatment, rats were euthanized and bacterial reduction in the lung was quantified by plating lung homogenates. Data was recorded as log10 reduction in lung colony forming units versus an untreated control group. In this model, orally administeredCompound 102 produced a 2.93±0.27 log10 reduction in CFU versus the 72 hour untreated control (FIG. 4 ). Azithromycin, dosed orally, produced 6.24±0.03 reduction. Dosed via the IV route,Compound 102 produced a 3.40±0.31 log10 reduction in CFU versus the 72 hour untreated control. - The in vitro activity (by broth microdilution MIC) of
Compound 102 against clinically important species of Gram-positive and Gram-negative pathogens was studied. As part of this study, the minimum bactericidal concentration (MBC) was also determined against a subset of the evaluated isolates to determine mode of action. - All isolates were non-duplicate, non-consecutive, clinically significant isolates and were tested by broth microdilution in accordance with CLSI M7-A8 (See Clinical and Laboratory Standards Institute. Methods for dilution antimicrobial susceptibility tests for bacteria that grow aerobically; approved standard—8th ed. CLSI document M7-A8. CLSI, Wayne, Pa. January 2009, the entire teachings of which are incorporated herein by reference).
- Quality control and interpretations of results were performed according with CLIS M100-S20, where available (See Clinical and Laboratory Standards Institute. Performance standards for antimicrobial susceptibility testing; twentieth informational supplement. CLSI document M100-S20. CLSI, Wayne, Pa. January 2010, the entire teachings of which are incorporated herein by reference).
- A subset of isolates were concurrently tested for MBC in accordance with CLSI M26-A (See Clinical and Laboratory Standards Institute. Methods for Determining Bactericidal Activity of Antimicrobial Agents, Approved Guideline. NCCLS document M26-A [ISBN 1-56238-384-1]. NCCLS, 940 West Valley Road, Suite 1400, Wayne, Pa. 19087 USA, 1999.) MBCs were evaluated based on quantitation of the growth in wells beyond the MIC to determine the well where a 3-log reduction in CFU relative to the initial inoculum was observed.
- Results for all MIC testing were within the acceptable standards based on the CLSI recommended QC ranges for each comparator agent evaluated and the appropriate ATCC control strains with the exception of colistin which tested one dilution lower than the provisional QC breakpoints established by CLSI for E. coli ATCC 25922 and P. aeruginosa ATCC 27853.
- The data is presented in Tables 9-11. Table 9 is the antimicrobial susceptibility of all agents tested against all Gram-negative and Gram-positive organisms. Table 10 is the activity profile of
Compound 102, tigecycline, and tetracycline by tetracycline resistance phenotype. Table 11 is a summary of MIC and MBC results forCompound 102 against selected strains. -
TABLE 9 Antimicrobial susceptibility of all agents tested against all Gram-negative and Gram-positive organisms MIC (μg/ml) Total Organism Agent n MIC50 MIC90 Escherichia coli a Compound 102 40 2 4 Tigecyclineb 0.5 2 Tetracycline >8 >8 Ceftazidime 64 >64 Ceftazidime/clavulanate 4 32 Colistin 0.25 0.5 Ertapenem ≦1 ≦1 Gentamicin 2 >8 Levofloxacin ≦0.25 >4 Piperacillin/Tazobactam 8 >64 Klebsiella pneumonia a Compound 102 27 4 16 Tigecyclineb 2 4 Tetracycline 8 >8 Ceftazidime >64 >64 Ceftazidime/clavulanate 16 >32 Colistin 0.25 0.5 Ertapenem ≦1 8 Gentamicin >8 >8 Levofloxacin 1 >4 Piperacillin/Tazobactam >64 >64 Kiebsielia oxytoca Compound 102 30 1 4 Tigecyclineb 0.5 2 Tetracycline 0.5 4 Ceftazidime ≦0.5 ≦0.5 Ceftazidime/clavulanate ≦0.25 0.5 Colistin ≦0.12 0.25 Ertapenem ≦1 ≦1 Gentamicin 0.5 2 Levofloxacin ≦0.25 4 Piperacillin/Tazobactam 2 8 Proteus vulgaris Compound 102 29 8 >16 Tigecyclineb 2 4 Tetracycline 8 >8 Ceftazidime ≦0.5 >64 Ceftazidime/clavulanate ≦0.25 ≦0.25 Colistin >2 >2 Ertapenem ≦1 ≦1 Gentamicin 1 >8 Levofloxacin ≦0.25 1 Piperacillin/Tazobactam ≦0.5 2 Enterobacter Compound 102 30 2 2 aerogenes Tigecyclineb 0.5 0.5 Tetracycline 1 2 Ceftazidime ≦0.5 16 Ceftazidime/clavulanate ≦0.25 16 Colistin ≦0.12 ≦0.12 Ertapenem ≦1 ≦1 Gentamicin ≦0.25 0.5 Levofloxacin ≦0.25 ≦0.25 Piperacillin/Tazobactam 2 16 Enterobacter cloacae Compound 102 29 4 8 Tigecyclineb 1 4 Tetracycline 4 >8 Ceftazidime >64 >64 Ceftazidime/clavulanate >32 >32 Colistin ≦0.12 >2 Ertapenem ≦1 >8 Gentamicin 0.5 >8 Levofloxacin 1 >4 Piperacillin/Tazobactam >64 >64 Serratia marcescens Compound 102 30 4 8 Tigecyclineb 1 2 Tetracycline >8 >8 Ceftazidime ≦0.5 ≦0.5 Ceftazidime/clavulanate ≦0.25 0.5 Colistin >2 >2 Ertapenem ≦1 ≦1 Gentamicin 0.5 1 Levofloxacin ≦0.25 2 Piperacillin/Tazobactam 2 8 Morganella morganii Compound 102 30 8 16 Tigecyclineb 2 4 Tetracycline 2 >8 Ceftazidime ≦0.5 4 Ceftazidime/clavulanate 4 16 Colistin >2 >2 Ertapenem ≦1 ≦1 Gentamicin 1 >8 Levofloxacin ≦0.25 4 Piperacillin/Tazobactam ≦0.5 1 Salmonella species Compound 102 30 2 2 Tigecyclineb 0.25 0.5 Tetracycline 1 >8 Ceftazidime ≦0.5 ≦0.5 Ceftazidime/clavulanate ≦0.25 ≦0.25 Colistin ≦0.12 0.5 Ertapenem ≦1 ≦1 Gentamicin 0.5 1 Levofloxacin ≦0.25 ≦0.25 Piperacillin/Tazobactam 2 4 Shigella species Compound 102 30 0.5 2 Tigecyclineb 0.25 0.5 Tetracycline >8 >8 Ceftazidime ≦0.5 ≦0.5 Ceftazidime/clavulanate ≦0.25 ≦0.25 Colistin ≦0.12 ≦0.12 Ertapenem ≦1 ≦1 Gentamicin 1 1 Levofloxacin ≦0.25 0.5 Piperacillin/Tazobactam 2 2 Acinetobacter lwoffii Compound 102 29 0.12 0.5 Tigecycline 0.12 0.5 Tetracycline 0.5 4 Ceftazidime 1 16 Ceftazidime/clavulanate ≦0.25 4 Colistin ≦0.12 >2 Ertapenem ≦1 4 Gentamicin ≦0.25 1 Levofloxacin ≦0.25 ≦0.25 Piperacillin/Tazobactam ≦0.5 8 Stenotrophomonas Compound 102 29 0.5 2 maltophilia Tigecycline 0.5 2 Tetracycline 8 >8 Ceftazidime 8 >64 Ceftazidime/clavulanate 32 >32 Colistin 0.25 >2 Ertapenem >8 >8 Gentamicin >8 >8 Levofloxacin 0.5 >4 Piperacillin/Tazobactam 32 >64 Staphylococcus aureus Compound 102 30 0.25 0.25 (MRSA PVL+) Tigecyclineb 0.12 0.12 Tetracycline 0.25 0.25 Clindamycin 0.06 0.12 Daptomycin 0.5 1 Ertapenem 4 8 Erythromycin >4 >4 Gentamicin 0.25 0.5 Levofloxacin 0.25 >2 Linezolid 1 2 Vancomycin 1 1 Staphylococcus aureus Compound 102 105 0.5 2 MRSAc Tigecycline 0.13 0.25 Tetracycline 0.25 >32 Levofloxacin >2 >2 Linezolid 2 4 Vancomycin 1 1 Streptococcus Compound 102 20 0.06 0.25 anginosus Tigecyclineb 0.03 0.06 Tetracycline 0.12 >4 Clindamycin ≦0.015 0.03 Daptomycin 0.25 0.25 Ertapenem 0.12 0.25 Erythromycin 0.03 >0.5 Levofloxacin 0.5 0.5 Linezolid 0.5 1 Penicillin ≦0.12 ≦0.12 Vancomycin 0.5 0.5 Streptococcus Compound 102 30 0.12 0.12 intermedius Tigecyclineb 0.03 0.12 Tetracycline 0.25 >4 Clindamycin ≦0.015 0.06 Daptomycin 0.5 1 Ertapenem 0.06 0.5 Erythromycin 0.06 >0.5 Levofloxacin 1 2 Linezolid 1 1 Penicillin ≦0.12 0.25 Vancomycin 0.5 0.5 Streptococcus mitis Compound 102 29 0.12 0.25 Tigecyclineb 0.03 0.12 Tetracycline 0.5 >4 Clindamycin 0.03 0.06 Daptomycin 0.5 1 Ertapenem 0.25 >1 Erythromycin >0.5 >0.5 Levofloxacin 1 2 Linezolid 1 1 Penicillin 0.25 2 Vancomycin 0.5 0.5 Streptococcus sanguis Compound 102 18 0.06 0.12 Tigecyclineb 0.03 0.06 Tetracycline 0.25 >4 Clindamycin 0.03 0.06 Daptomycin 0.5 1 Ertapenem 0.12 0.5 Erythromycin 0.03 >0.5 Levofloxacin 0.5 2 Linezolid 0.5 1 Penicillin ≦0.12 ≦0.12 Vancomycin 0.5 1 a37 E. coli and 24 K. pneumoniae genetically characterized for beta-lactamase production were tested in a separate laboratory on the same study panels bFDA breakpoints for Enterobacteriaceae were applied: ≦2 μg/ml (S), 4 μg/ml (I), ≧8 μg/ml (R); for S. aureus: ≦0.5 μg/ml (S); for Streptococcus spp. (other than S. pneumoniae: ≦0.25 μg/ml (S) c Staphylococcus aureus MRSA includes the data from the Staphylococcus aureus (MRSA PVL+) group. -
TABLE 10 Activity profile of Compound 102, tigecycline, and tetracycline bytetracycline resistance phenotype Organism Agent Phenotype Total_n MIC50 MIC90 Enterobacteriaceae Compound TET S 168 2 8 102 Compound TET NS 137 4 16 102 Tigecycline TET S 168 1 2 Tigecycline TET NS 137 1 4 Tetracycline TET S 168 1 4 Tetracycline TET NS 137 >8 >8 S. maltophila Compound TET S 10 0.5 0.5 102 Compound TET NS 19 1 4 102 Tigecycline TET S 10 0.25 0.5 Tigecycline TET NS 19 0.5 2 Tetracycline TET S 10 4 4 Tetracycline TET NS 19 >8 >8 Viridans group Compound TET S 65 0.06 0.12 streptococci 102 Compound TET NS 32 0.12 0.25 102 Tigecycline TET S 65 0.03 0.06 Tigecycline TET NS 32 0.03 0.12 Tetracycline TET S 65 0.25 0.5 Tetracycline TET NS 32 >4 >4 TET S = Tetracycline susceptible; TET NS = Tetracycline non-susceptible -
TABLE 11 Summary of MIC and MBC results Study Compound 102 Organism Isolate ID MIC MBC MBC:MIC Acinetobacter lwoffii 2919857 0.12 0.5 4 Acinetobacter lwoffii 2919860 0.12 16 128 Acinetobacter lwoffii 2919873 0.25 0.25 1 Acinetobacter lwoffii 2919875 0.06 0.25 4 Enterobacter aerogenes 2919897 2 4 2 Enterobacter aerogenes 2919900 1 8 8 Enterobacter aerogenes 2919909 2 8 4 Enterobacter aerogenes 2919913 1 16 16 Enterobacter cloacae 2920072 8 16 2 Enierobacter cloacae 2920082 2 8 4 Enterobacter cloacae 2920119 2 2 1 Klebsiella oxytoca 2919956 1 8 8 Klebsiella oxytoca 2919964 1 4 4 Klebsiella oxytoca 2919972 2 4 2 Klebsiella oxytoca 2919983 1 8 8 Morganella morganii 2919931 4 >16 >4 Morganella morganii 2919935 4 >16 >4 Morganella morganii 2919945 8 >16 >2 Proteus vulgaris 2919822 16 >16 >1 Proteus vulgaris 2919827 8 >16 >2 Proteus vulgaris 2919835 4 >16 >4 Proteus vulgaris 2919836 2 8 4 Salmonella species 2919986 2 8 4 Salmonella species 2919990 2 8 4 Salmonella species 2920006 2 8 4 Salmonella species 2920008 2 8 4 Serratia marcescens 2920092 4 16 4 Serratia marcescens 2920094 4 >16 >4 Serratia marcescens 2920100 8 16 2 Serratia marcescens 2920109 4 16 4 Shigella species 2919892 1 4 4 Shigella species 2919894 0.25 4 16 Shigella species 2920018 0.25 0.5 2 Shigella species 2920026 0.5 16 32 Shigella species 2920028 0.5 4 8 Staphylococcus aureus 2919648 0.25 >4 >16 Staphylococcus aureus 2919649 0.25 >4 >16 Staphylococcus aureus 2919650 0.25 >4 >16 Stenotrophomonas maltophilia 2920035 2 >16 >8 Stenotrophomonas maltophilia 2920051 2 16 8 Streptococcus anginosus 2919722 0.25 2 8 Streptococcus anginosus 2919742 0.12 2 16 Streptococcus anginosus 2919797 0.25 2 8 Streptococcus intermedius 2919756 0.06 1 16 Streptococcus intermedius 2919759 0.03 2 64 Streptococcus intermedius 2919784 0.12 2 16 Streptococcus intermedius 2919819 0.25 1 4 Streptococcus mitis 2919763 0.12 0.5 4 Streptococcus mitis 2919781 0.12 0.12 1 Streptococcus mitis 2919798 0.06 0.06 1 Streptococcus mitis 2919803 0.12 1 8 Streptococcus sanguis 2919749 0.06 0.25 4 Streptococcus sanguis 2919752 0.25 0.5 2 Streptococcus sanguis 2919758 0.12 2 16 Escherichia coli 2921525 1 >16 >16 Escherichia coli 2921576 2 16 8 Klebsiella pneumonia 2921528 2 >16 >8 Klebsiella pneumoniae 2921529 2 >16 >8 - Against the evaluated Gram-negative and Gram-positive pathogens,
Compound 102 MICs were generally 2-4 fold higher than those of tigecycline. -
Compound 102 had comparable MICs relative to tetracycline against the evaluated S. aureus and Enterobacteriaceae excluding Shigella spp. whereCompound 102 was more potent.Compound 102 also had 2-4 fold lower MICs than tetracycline against Acinetobacter lwoffli, S. maltophila, and streptococci. -
Compound 102 was more potent by MIC50/MIC90 against Gram-positive pathogens relative to Gram-negative pathogens. -
Compound 102 and tigecycline MICs were not notably altered against evaluated tetracycline resistant isolates relative to tetracycline susceptible isolates, andCompound 102 maintained potency against tetracycline resistant Shigella spp., S. maltophila, and streptococci. - MBC:MIC ratios for
Compound 102 indicated bacteriostatic mode of action (ratio >2 for 89.3% of evaluated isolates). - The in vitro activity (by broth microdilution MIC) of
Compound 102 against clinically important Gram-positive and Gram-negative species that cause respiratory tract or acute bacterial skin and skin structure infections was studied. - All isolates were non-duplicate, non-consecutive, clinically significant isolates and were tested by broth microdilution in accordance with CLSI M7-A8 (See Clinical and Laboratory Standards Institute. Methods for dilution antimicrobial susceptibility tests for bacteria that grow aerobically; approved standard—8th ed. CLSI document M7-A8. CLSI, Wayne, Pa. January 2009, the entire teachings of which are incorporated herein by reference); CLSI M45-A (See Clinical and Laboratory Standards Institute. Methods for antimicrobial dilution and disk susceptibility testing of infrequently isolated or fastidious bacteria; approved guideline. CLSI document M45-A. CLSI, Wayne, Pa. May 2006, the entire teachings of which are incorporated herein by reference.
- Quality control and interpretations of results were performed according with CLSI M100-S20, where available. (See Clinical and Laboratory Standards Institute. Performance standards for antimicrobial susceptibility testing; twentieth informational supplement. CLSI document M100-S20. CLSI, Wayne, Pa. January 2010, the entire teachings of which are incorporated herein by reference).
- Results for all MIC testing were within the acceptable standards based on the CLSI recommended QC ranges for each comparator agent evaluated and the appropriate ATCC control strains on each day of testing.
- The activity profiles are presented in Tables 12-14. Table 12 is the activity profile of
Compound 102 and other comparator agents against evaluated Gram-positive pathogens. Table 13 is the activity profile ofCompound 102 and other comparator agents against evaluated Gram-negative pathogens. Table 14 is the activity profile ofCompound 102 and other comparator agents against evaluated pathogen by tetracycline phenotype. -
TABLE 12 Activity profile of Compound 102 and other comparator agents against evaluated Gram-positive pathogens MIC (mg/mL) Organism Phenotype Drug MIC50 MIC90 S. aureus MSSA (n = 50)1 Compound 102 0.25 0.5 (n = 50) Tigecycline3 0.12 0.25 Tetracycline 0.25 0.5 Azithromycin 2 >4 Ceftriaxone 4 4 Clindamycin 0.12 0.12 Gentamicin 0.25 0.5 Imipenem ≦0.25 ≦0.25 Levofloxacin 0.25 1 Linezolid 2 4 Vancomycin 1 1 CoNS (n = 52) MSCoNS (n = 26)1 Compound 102 0.25 1 Tigecycline 0.06 0.25 Tetracycline 0.5 2 Azithromycin 0.25 >4 Ceftriaxone 1 2 Clindamycin 0.06 0.06 Gentamicin 0.12 0.25 Imipenem ≦0.25 ≦0.25 Levofloxacin 0.25 >4 Linezolid 1 1 Vancomycin 2 2 MRCoNS (n = 26)1 Compound 102 0.25 1 Tigecycline 0.06 0.12 Tetracycline 0.25 2 Azithromycin >4 >4 Ceftriaxone 16 >64 Clindamycin 0.12 >2 Gentamicin 0.25 >8 Imipenem 1 >8 Levofloxacin >4 >4 Linezolid ≦0.5 1 Vancomycin 1 2 S. saprophyticus Compound 102 0.25 0.5 (n = 36) Tigecycline 0.12 0.25 Tetracycline 0.5 0.5 Azithromycin 1 >4 Ceftriaxone 8 16 Clindamycin 0.06 0.12 Gentamicin ≦0.06 ≦0.06 Imipenem ≦0.25 ≦0.25 Levofloxacin 0.5 0.5 Linezolid 2 4 Vancomycin 1 1 S. pneumoniae PEN S (n = 39)2 Compound 102 0.06 0.12 (n = 100) Tigecycline 0.06 0.06 Tetracycline 0.12 0.5 Azithromycin 0.12 >4 Ceftriaxone ≦0.03 0.06 Clindamycin 0.06 0.06 Imipenem ≦0.015 ≦0.015 Levofloxacin 0.5 1 Linezolid 1 1 Penicillin (oral) ≦0.12 ≦0.12 Vancomycin 0.5 0.5 PEN I (n = 11)2 Compound 102 0.12 0.25 Tigecycline 0.06 0.06 Tetracycline 8 32 Azithromycin >4 >4 Ceftriaxone 0.12 0.5 Clindamycin 0.06 >0.5 Imipenem 0.03 0.25 Levofloxacin 0.5 1 Linezolid 1 1 Penicillin (oral) 0.25 1 Vancomycin 0.5 0.5 PEN R (n = 50)2 Compound 102 0.06 0.12 Tigecycline 0.06 0.06 Tetracycline 16 16 Azithromycin >4 >4 Ceftriaxone 1 2 Clindamycin >0.5 >0.5 Imipenem 0.5 0.5 Levofloxacin 0.5 1 Linezolid 1 1 Penicillin (oral) 2 >2 Vancomycin 0.25 0.5 S. pyogenes Compound 102 0.12 0.25 (n = 50) Tigecycline 0.06 0.06 Tetracycline 0.25 32 Azithromycin 0.12 >4 Ceftriaxone ≦0.03 ≦0.03 Clindamycin 0.06 0.06 Imipenem ≦0.015 ≦0.015 Levofloxacin 0.5 0.5 Linezolid 1 1 Penicillin ≦0.12 ≦0.12 Vancomycin 0.5 0.5 S. agalactiae Compound 102 0.5 0.5 (n = 50) Tigecycline 0.12 0.12 Tetracycline 32 >32 Azithromycin 0.06 >4 Ceftriaxone 0.06 0.06 Clindamycin 0.06 >0.5 Imipenem ≦0.015 0.03 Levofloxacin 0.5 1 Linezolid 1 1 Penicillin ≦0.12 ≦0.12 Vancomycin 0.5 0.5 E. faecalis VAN S (n = 53) Compound 102 0.5 0.5 (n = 101) Tigecycline 0.12 0.12 Tetracycline >32 >32 Azithromycin >4 >4 Ceftriaxone >64 >64 Clindarnycin >2 >2 Gentamicin >8 >8 Imipenern 1 1 Levofloxacin 1 >4 Linezolid 2 2 Vancomycin 1 2 VAN NS (n = 48) Compound 102 0.5 1 Tigecycline 0.06 0.12 Tetracycline >32 >32 Azithromycin >4 >4 Ceftriaxone >64 >64 Clindamycin >2 >2 Gentamicin >8 >8 Imipenem 1 2 Levofloxacin >4 >4 Linezolid 2 2 Vancomycin >16 >16 E. faecium VAN S (n = 49) Compound 102 0.12 0.5 (n = 100) Tigecycline 0.06 0.06 Tetracycline 0.25 >32 Azithromycin >4 >4 Ceftriaxone >64 >64 Clindamycin >2 >2 Gentamicin 8 >8 Imipenem >8 >8 Levofloxacin >4 >4 Linezolid 2 2 Vancomycin 0.5 1 VAN NS (n = 51) Compound 102 0.12 0.5 Tigecycline 0.06 0.12 Tetracycline 0.25 >32 Azithromycin >4 >4 Ceftriaxone >64 >64 Clindamycin >2 >2 Gentamicin 8 >8 Imipenem >8 >8 Levofloxacin >4 >4 Linezolid 2 2 Vancomycin >16 >16 1As oxacillin was not tested as part of the current study, methicillin phenotype was based off of prior oxacillin testing performed on these isolates 2Penicillin MICs from prior testing were utilized to determine penicillin phenotype, as penicillin was only tested as low as 0.12 mg/mL, and isolates with MICs of ≦0.12 mg/mL can not be interpreted as either susceptible or intermediate 3No CLSI/FDA criteria available for interpretation of MIC MSSA: methicillin-susceptible S. aureus; MSCoNS: methicillin-susceptible coagulase-negative staphylococci; MRCoNS: methicillin-resistant coagulase-negative staphylococci PEN: penicillin; VAN: vancomycin; S: susceptible; I: intermediate; R: resistant; NS: non-susceptible; NA: not applicable -
TABLE 13 Activity profile of Compound 102 and other comparatoragents against evaluated Gram-negative pathogens MIC (mg/mL) Organism Drug MIC50 MIC90 H. influenzae (n = 50) Compound 1020.5 1 Tigecycline 0.12 0.25 Tetracycline 0.5 0.5 Ampicillin ≦0.5 8 Azithromycin 1 2 Ceftriaxone ≦0.03 ≦0.03 Imipenem 1 2 Levofloxacin 0.03 0.03 M. catarrhalis (n = 50) Compound 1020.12 0.12 Tigecycline 0.06 0.12 Tetracycline 0.12 0.25 Azithromycin ≦0.12 ≦0.12 Ceftriaxone ≦0.5 ≦0.5 Clindamycin 1 2 Gentamicin 0.12 0.12 Imipenem ≦0.25 ≦0.25 Levofloxacin 0.06 0.06 -
TABLE 14 Activity profile of Compound 102 and other comparator agentsagainst evaluated pathogen by tetracycline phenotype MIC (mg/mL) Organism Drug Phenotype N MIC50 MIC90 S. pneumoniae Compound 102 TET S 54 0.06 0.12 TET NS 46 0.12 0.12 Tigecycline TET S 54 0.06 0.06 TET NS 46 0.06 0.06 Tetracycline TET S 54 0.12 0.25 TET NS 46 16 32 S. pyogenes Compound 102 TET S 44 0.12 0.12 TET NS 6 0.25 NA Tigecycline TET S 44 0.06 0.06 TET NS 6 0.06 NA Tetracycline TET S 44 0.12 0.25 TET NS 6 32 NA S. agalactiae Compound 102 TET S 11 0.12 0.12 TET NS 39 0.5 0.5 Tigecycline TET S 11 0.12 0.12 TET NS 39 0.12 0.12 Tetracycline TET S 11 0.25 0.25 TET NS 39 32 >32 F. faecalis Compound 102 TET S 30 0.12 0.25 TET NS 71 0.5 1 Tigecycline TET S 30 0.06 0.12 TET NS 71 0.12 0.12 Tetracycline TET S 30 0.25 0.5 TET NS 71 >32 >32 E. faecium Compound 102 TET S 60 0.12 0.12 TET NS 40 0.25 0.5 Tigecycline TET S 60 0.06 0.06 TET NS 40 0.06 0.12 Tetracycline TET S 60 0.25 0.25 TET NS 40 >32 >32 NA: not applicable; TET: tetracycline; S: susceptible; NS: non-susceptible - Against the evaluated Gram-positive aerobic pathogens,
Compound 102 MICs were comparable to those of tetracycline against staphylococci and were several-fold lower than those of tetracycline against pneumococci and beta-hemolytic streptococci;Compound 102 MICs were generally 2-4 fold higher than those of tigecycline. - Against the evaluated Gram-negative respiratory pathogens,
Compound 102 had similar MICs to those of tetracycline;Compound 102 MICs were generally 2-4-fold higher than those of tigecycline. - There was minimal impact of tetracycline resistance on the overall activity profile of
Compound 102, asCompound 102 MICs were at most 2-4-fold higher against tetracycline resistant isolates relative to tetracycline susceptible isolates. - Genes encoding tet(A), tet(B), tet(K), tet(M), tet(X), and E. coli β-galactosidase (lacZ) as a control were amplified by PCR from clinical isolates confirmed by gene sequencing to have these tetracycline-resistance determinants and cloned into an L-arabinose inducible expression system without any affinity tags (pBAD-Myc-His, Invitrogen, Carlsbad, Calif.). Plasmids were transformed and expressed in E. coli DH10B cells (Invitrogen, Carlsbad, Calif.). Cloned inserts were sequenced to verify the tetracycline resistance gene sequence and compared to reported sequences in GenBank (accession numbers; tet(A), AJ419171; tet(B), AP0961; tet(K), AJ888003; tet(M), X90939.1, tet(X), M37699). Cells were grown in Mueller Hinton Broth containing ampicillin, 50 mg/ml, pre-induced for 30 minutes with 1% arabinose (tet(A), tet(B), tet(M), tet(X)) or 0.1% arabinose (tet(K)) at 30° C. prior to use as inocula in MIC assays containing ampicillin, 50 mg/ml. MIC assays were incubated at 35° C. and otherwise followed Clinical Laboratory Standards Institute guidelines, and the resultant data is shown in Table 15.
-
TABLE 15 MIC values for E. coli DH10B recombinantly expressing tetracycline-resistance genes. Com- EC971 EC1153 EC969 EC970 EC1082 EC1083 pound LacZ Tet(X) TetM TetK TetA TetB Mino- 0.5 4 64 1 8 16 cycline Tetra- 2 >32 64 64 >128 >128 cycline Tige- 0.0625 2 0.125 0.0625 1 0.0625 cycline Com- 2 4 1 0.5 2 1 pound 102 Ceftri- 0.125 0.125 0.5 0.0625 0.0625 0.0625 axone tet(X) encodes an inactivating enzyme for many tetracyclines called a flavin-dependent monooxygenase. tet(A) and tet(B) encode tetracycline-specific efflux pumps usually found in gram-negative bacteria. tet(K) encodes a tetracycline-specific efflux pump found predominantly in gram-positive bacteria. tet(M) encodes a tetracycline-specific ribosomal protection mechanism that is wide-spread in both gram-negatives and gram-positives. - To estimate resistance development in vivo.
Compound 102 was analyzed for the propensity to select for resistance in vitro. The spontaneous resistance frequency was determined by plating dense suspensions of S. aureus SA101 and S. pneumoniae SP106 (˜1010 colony forming units (CFU) per plating) in replicates on Mueller Hinton agar plates containing compound at 5× the MIC. Plates were supplemented with 5% defibrinated sheep blood for SP106 testing. Resistance frequencies were calculated by dividing the number of colonies that grew at a given drug concentration divided by the total number of plated CFU. For SA101 and SP106, the spontaneous resistance frequencies forCompound 102 were <2.2×10−10 and 1×10−8, respectively. For SA101 and SP106, the spontaneous resistance frequencies for the levofloxacin (negative) control were <2.2×10−10 and <3.13×10−9, respectively. For SA101 and SP106, the spontaneous resistance frequencies for the rifampin (positive) control were 2.0×10−8 and 2.88×10−7, respectively. Thus, neither S. aureus nor S. pneumoniae appear to have large pre-existing populations that are nonsusceptible to Compound 102. - As a result of promising pharmacokinetic data in Sprague Dawley rats,a
Compound 102 was evaluated in 3 non-naîve cynomolgus monkeys. Each animal received a single IV dose of 1 mg/kg and after a 7-day washout, and received a single PO dose of 10 mg/kg. Nine to ten plasma samples were drawn for each dosing route up to 24 hours into heparin-coated vacutainer tubes. Dose formulations were verified with a 5-point calibration curve. The plasma concentration of the compound was quantified by LC/MS/MS using an internal standard. Quality control (QC) samples (low, medium, high; minimum of 6 standards with LLOQ<3 ng/mL) and standard curves (in duplicate) were included in the bioanalytical run. WinNonLin was used to determine individual and mean PK parameters±standard deviation (F, Cmax, Tmax, T½, CL, Vss, AUC(0-t), AUC(0-∞), and MRT). The results are presented in Table 16. -
TABLE 16 Pharmacokinetic parameters for Compound 102 in non-naïvecynomologus monkeys A. IV dosing B. PO dosing Parameter Average SD Parameter Average SD Dose (mg/kg) 1 Dose (mg/kg) 10 Co (ng/ml) 3170 1126 Cmax (ng/ml) 1260 497 T½ (h) 23.33 3.85 Tmax (h) 4 0 Vdss (L/kg) 3.40 0.38 T½ (h) 24.84 8.26 Cl (ml/hr/kg) 111.6 26.46 AUC last 16333 4937 AUC last 4853 551 (ng · h/ml) (ng · h/ml) AUC inf 35433 19111 AUC inf 9310 2201 (ng · h/ml) (ng · h/ml) % Oral 33.7 9.1 bioavailability a Initial preliminary testing in Sprague Dawley rats (n = 3) resulted an oral bioavailability (% F) of 48.3 ± 31.2. - To estimate its potential to produce phototoxicity in vivo,
Compound 102 was tested in validated in vivo and in vitro models of acute phototoxic activity at Charles River Laboratories (See Spielmann, H., et al., The second ECVAM workshop on phototoxicity testing. The report and recommendations of ECVAM workshop 42. Altern Lab Anim, 2000. 28(6): p. 777-814; and Peters, B. and H. G. Holzhutter, In vitro phototoxicity testing: development and validation of a new concentration response analysis software and biostatistical analyses related to the use of various prediction models. Altern Lab Anim, 2002. 30(4): p. 415-32, the entire teachings of both are incorporated herein by reference). Results showed that, unlike doxycycline,Compound 102 findings in vitro in the neutral red uptake 3T3 assay did not translate to a phototoxic effect in the in vivo model, which is considered to be a better mimic of clinically-relevant UVA exposure of high-level intradermal accumulation of compound. - For in vivo evaluation in the Crl:SKH1-hr hairless mouse model of phototoxicity, mice (n=3 per group) were injected intracutaneously along the back (two dorsal injection sites per mouse) with
Compound 102 and control compounds (doxycycline, minocycline, levofloxacin) at either 0.0375 mg/mouse or 0.375 mg/mouse. A vehicle control group was injected with normal saline. The pH of compound formulations was adjusted to 6.5±0.5 prior to injection. Immediately after administration, mice were lightly anesthetized via intraperitoneal injection of chloral hydrate in deionized water and then positioned on plastic tubing with laboratory tape. An aluminum foil mask with a single hole with a diameter of 1.3 cm (1.3 cm2) was placed over the mid-dorsum injection site before UVA exposure. The distal administration site was shielded from UVA exposure. A UVA dose of no less than 20.0 and no more than 20.1 J/cm2 at an intensity of 5±1 mW/cm2 at the level of the mice was delivered during the exposure period. Mice were observed before formulation administration, after completion of administration, 60±10 minutes and 4 hours±30 minutes after the completion of UVR exposure and 1, 2 and 3 days after UVR exposure for general appearance, clinical observations and signs of skin responses at the site of UVR exposure and the non-UVA-exposed site. Results showed that administration of the positive control, doxycycline, resulted in dosage-dependent phototoxicity (erythema, edema) at the site of UVA exposure, validating the assay. Minocycline, administered as a negative control, produced no skin reaction at either dose. Administration of levofloxacin resulted in dosage-dependent phototoxicity (erythema, edema, flaking) in the site of UVA exposure.Compound 102 at either 0.0375 or 0.375 mg/mouse resulted in no skin reactions indicative of phototoxicity on the day of UVA exposure or the following three days of observation. - Legionella organisms are often associated with respiratory infections, and Legionella pneumophila results in significant mortality unless it is promptly and effectively treated. In a recent FDA workshop on Clinical Trial Design for Community-Acquired Bacterial Pneumonia (Dec. 9, 2009), the panel voted to include patients with documented L. pneumophila in non-inferiority community-acquired bacterial pneumonia (CABP) trials. Because L. pneumophila can result in an overall case mortality of 15%, it was important to determine its susceptibility to the compounds of the invention, such as
Compound 102. - The in vitro activity of
Compound 102 was compared to tetracycline and erythromycin against a total of 70 L. pneumophila isolates (serogroup 1 (n=20), 2 (n=10), 3 (n=10), 4 (n=10), 5 (n=10) and 6 (n=10)) by standard agar dilution using buffered yeast extract agar containing BCYE growth supplement (BYE). - The Legionella pneumophila strains were isolated from the respiratory tract from 1992 to 2010 and identified by standard methods described by Murray et al., Manual of Clinical Microbiology, 9rd ed., 2007, A.S.M., the entire teachings of which are incorporated herein by reference. Isolates from six serogroups were tested for a total number of 70 L. pneumophila. Buffered Yeast extract (BYE) (with original Legionella BCYE Growth supplement) was used as the medium to test Legionella strains.
- A pilot test to determine if
Compound 102 and tetracycline activity were impacted artificially by BCYE supplement or iron was done by testing of Staphylococcus aureus ATCC29213 on BYE (Original BYE), BYE without ferric pyrophosphate (modified BYE) and cation-adjusted Mueller-Hinton agar (MH). - MICs were determined using the CLSI agar dilution method ((See Performance standards for antimicrobial susceptibility testing; Seventeenth Informational Supplement; CLSI, M100-S17 VOL 27 number 1, Clinical and Laboratory Standards Institute, Wayne, Pa., January 2007, the teachings of which are incorporated herein by reference; and Method for dilution antimicrobial susceptibility tests for bacteria that grow aerobically; approved standard 17th edition, M7-A7, Clinical and Laboratory Standards Institute (CLSI), Wayne, Pa., 2006), the entire teachings of which are incorporated herein by reference)), with replicate plating of the organisms onto a series of agar plates of increasing concentrations of compound from 0.004 mg/L to 64 μg/mL. Erythromycin and tetracycline were obtained from Sigma Chemicals, Mississauga, Ont.
- Only original BYE supported L. pneumophila growth. The pilot tests indicated that BYE resulted in a 16- to 64-fold increase in MICs relative to MH for S. aureus ATCC29213 (Tables 17 and 18). These results suggest that the MIC values of
Compound 102 obtained in original BYE for L. pneumophila were artificially elevated due to media effects. -
TABLE 17 Pilot Study with original BYE, Modified BYE and Cation-adjusted Mueller Hinton media for L. pneumophila ATCC33152. Compound Incubation Assay Compound Media used Time No. 102 Tetracycline Erythromycin Original 24 hours 1 NG NG NG BYE 2 NG NG NG 48 hours 1 16 8 0.5 2 16 8 0.25 Modified 24 hours 1 NG NG NG BYE 2 NG NG NG 48 hours 1 NG NG NG 2 NG NG NG Cation 24 hours 1 NG NG NG adjusted 2 NG NG NG Mueller- Hinton Expected MIC Range Unknown Unknown 0.25-0.5*** NG = no growth -
TABLE 18 Pilot Study with original BYE, Modified BYE and Cation-adjusted Mueller Hinton media for Staphylococcus aureus ATCC29213. Compound Media Incubation Assay Compound used Time No. 102 Tetracycline Erythromycin Original 24 hours 1 4 2 0.5 BYE 2 4 2 0.5 48 hours 1 >64 32 0.5 2 >64 32 0.5 Modified 24 hours 1 2 0.25 0.5 BYE 2 2 0.25 0.5 48 hours 1 8 0.5 0.5 2 8 0.5 0.5 Cation 24 hours 1 0.25 0.5 1 adjusted 48 hours 1 0.25 0.5 1 Mueller- Hinton Expected MIC Range 0.25-1* 0.12-1** 0.25-1** NG = No Growth *Expected MIC Range with Cation adjusted Mueller-Hinton **Expected MIC Range with Cation Mueller-Hinton. ***Expected MIC Range with original BYE, data obtained from previous studies. - The activity of
Compound 102, tetracycline and erythromycin against all Legionella pneumophila serogroups is shown in Table 19. The MIC90 values forCompound 102, tetracycline, and erythromycin against strains from all serogroups of L. pneumophila were 8, 8, and 0.5 mg/L, respectively, using the original BYE media. -
TABLE 19 Susceptibility of Legionella pneumophila all serogroups in original BYE Media MIC (mg/L) Serogroup (no. tested) Antibiotic MIC50 MIC90 All Serogroups (70) Compound 1022 8 Tetracycline 4 8 Erythromycin 0.25 0.5 - The teachings of all patents, published applications and references cited herein are incorporated by reference in their entirety.
- While this invention has been particularly shown and described with references to example embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention encompassed by the appended claims.
Claims (30)
1. A compound of Structural Formula I:
or a pharmaceutically acceptable salt thereof, wherein:
X is selected from halo, —R, —OR, —SR, —S(O)mR, —N(R)2, —N(R)C(O)R, N(R)C(O)OR′, and N(R)S(O)mR′, wherein:
each R is independently selected from H, (C1-C6)alkyl, carbocyclyl, or heterocyclyl; or
two R groups taken together with the atom or atoms to which they are bound form a 4-7 membered non-aromatic heterocyclyl; and
R′ is (C1-C6)alkyl, carbocyclyl, or heterocyclyl;
ring A is a 5-7 membered non-aromatic heterocyclic ring optionally containing 1-2 heteroatoms independently selected from N, S and O in addition to the indicated nitrogen atom, wherein:
R1 is selected from hydrogen, —(C1-C8)alkyl, —(C0-C6)alkylene-carbocyclyl, —(C0-C6)alkylene-heterocyclyl, —(C1-C6)alkylene-O—(C1-C6)alkyl, —(C2-C6)alkylene-O-carbocyclyl, —(C2-C6)alkylene-O-heterocyclyl, —S(O)m—(C1-C6)alkyl, —S(O)m-carbocyclyl, —S(O)m-heterocyclyl, —(C2-C4)alkylene-S(O)m-carbocyclyl, —(C2-C4)alkylene-S(O)m-heterocyclyl, —C(O)—[C(R4)(R4)]0-4—N(R2)(R3), —C(O)—(C1-C6)alkyl, —C(O)-heterocyclyl, —C(O)-carbocyclyl, —S(O)m—[C(R4)(R4)]0-4—N(R2)(R3), and —S(O)m—(C1-C4)alkylene-carbocyclyl, —S(O)m—(C1-C4)alkylene-heterocyclyl, or
R1 taken together with a ring atom adjacent to the nitrogen atom to which R1 is bound forms a saturated heterocyclic ring fused to ring A;
each of R2 and R3 is independently selected from hydrogen, (C1-C8)alkyl, —(C0-C6) alkylene-carbocyclyl, —(C0-C6)alkylene-heterocyclyl, —(C2-C6)alkylene-O-carbocyclyl, —(C2-C6)alkylene-O-heterocyclyl, —S(O)m—(C1-C6)alkyl, —S(O)m-carbocyclyl, —S(O)m-heterocyclyl, —(C2-C4)alkylene-S(O)m-carbocyclyl, and —(C2-C4)alkylene-S(O)m-heterocyclyl; or
R2 and R3, taken together with the nitrogen atom to which they are bound form a heterocyclyl, wherein the heterocyclyl optionally comprises 1 to 4 additional heteroatoms independently selected from N, S and O;
each R4 is independently selected from hydrogen, (C1-C6)alkyl, carbocyclyl, heterocyclyl or a naturally occurring amino acid side chain moiety, or
two R4 taken together with a common carbon atom to which they are bound form a 3-7 membered non-aromatic carbocyclyl or a 4-7 membered non-aromatic heterocyclyl, wherein the heterocyclyl formed by two R4 comprises one to three heteroatoms independently selected from N, S and O;
any substitutable carbon atom on ring A is optionally:
(i) substituted with one to two substituents independently selected from —(C1-C4)alkyl, and —(C0-C4)alkylene-carbocyclyl; or
(ii) substituted with ═O;
(iii) taken together with an adjacent ring atom to form a 3-7 membered saturated carbocyclyl or a 4-7 membered saturated heterocyclyl ring; or
(iv) spyrofused to a 3-7 membered saturated carbocyclyl;
any additional N heteroatom on ring A is substituted with hydrogen, C1-C6 alkyl, carbocyclyl, or heterocyclyl;
each alkyl or alkylene in Structural Formula I is optionally and independently substituted with one or more substituents independently selected from halo, —OH, ═O, —O—(C1-C4)alkyl, fluoro-substituted-(C1-C4)alkyl, —S(O)m—(C1-C4)alkyl and —N(R5)(R5);
each carbocyclyl or heterocyclyl portion of a substituent of ring A or the saturated heterocyclic ring fused to ring A is optionally and independently substituted with one or more substituents independently selected from halo, —(C1-C4)alkyl, —OH, ═O, —O—(C1-C4)alkyl, —(C1-C4)alkylene-O—(C1-C4)alkyl, halo-substituted-(C1-C4)alkyl, halo-substituted-O—(C1-C4)alkyl, —C(O)—(C1-C4)alkyl, —C(O)-(fluoro-substituted-(C1-C4)alkyl), —S(O)m—(C1-C4)alkyl, —N(R5)(R5) and CN;
each R5 is independently selected from hydrogen and (C1-C4)alkyl, wherein each alkyl in the group represented by R5 is optionally and independently substituted with one or more substituents independently selected from —(C1-C4)alkyl, (C3-C6)cycloalkyl, halo, —OH, —O—(C1-C4)alkyl, and
—(C1-C4)alkylene-O—(C1-C4)alkyl; and
each m is independently 1 or 2,
with the proviso that when X is hydrogen, ring A is not an unsubstituted bivalent piperidine radical.
2. A compound of Structural Formula I:
or a pharmaceutically acceptable salt thereof, wherein:
X is selected from halo, —R′, —OR, —SR, —S(O)mR, —N(R)2, —N(R)C(O)R, N(R)C(O)OR′, and N(R)S(O)mR′, wherein:
each R is independently selected from H, (C1-C6)alkyl, carbocyclyl, or heterocyclyl; or
two R groups taken together with the atom or atoms to which they are bound form a 4-7 membered non-aromatic heterocyclyl; and
R′ is (C1-C6)alkyl, carbocyclyl, or heterocyclyl;
ring A is a 5-7 membered non-aromatic heterocyclic ring optionally containing 1-2 heteroatoms independently selected from N, S and O in addition to the indicated nitrogen atom, wherein:
R1 is selected from hydrogen, —(C1-C8)alkyl, —(C0-C6)alkylene-carbocyclyl, —(C0-C6)alkylene-heterocyclyl, —(C1-C6)alkylene-O—(C1-C6)alkyl, —(C2-C6)alkylene-O-carbocyclyl, —(C2-C6)alkylene-O-heterocyclyl, —S(O)m—(C1-C6)alkyl, —S(O)m-carbocyclyl, —S(O)m-heterocyclyl, —(C2-C4)alkylene-S(O)m-carbocyclyl, —(C2-C4)alkylene-S(O)m-heterocyclyl, —C(O)—[C(R4)(R4)]0-4—N(R2)(R3), —C(O)—(C1-C6)alkyl, —C(O)-heterocyclyl, —C(O)-carbocyclyl, —S(O)m—[C(R4)(R4)]0-4—N(R2)(R3), and —S(O)m—(C1-C4)alkylene-carbocyclyl, —S(O)m—(C1-C4)alkylene-heterocyclyl; or
R1 taken together with a ring atom adjacent to the nitrogen atom to which R1 is bound forms a saturated heterocyclic ring fused to ring A;
each of R2 and R3 is independently selected from hydrogen, (C1-C8)alkyl, —(C0-C6) alkylene-carbocyclyl, —(C0-C6)alkylene-heterocyclyl, —(C2-C6)alkylene-O-carbocyclyl, —(C2-C6)alkylene-O-heterocyclyl, —S(O)m—(C1-C6)alkyl, —S(O)m-carbocyclyl, —S(O)m-heterocyclyl, —(C2-C4)alkylene-S(O)m-carbocyclyl, and —(C2-C4)alkylene-S(O)m-heterocyclyl; or
R2 and R3, taken together with the nitrogen atom to which they are bound form a heterocyclyl, wherein the heterocyclyl optionally comprises 1 to 4 additional heteroatoms independently selected from N, S and O;
each R4 is independently selected from hydrogen, (C1-C6)alkyl, carbocyclyl, heterocyclyl or a naturally occurring amino acid side chain moiety, or
two R4 taken together with a common carbon atom to which they are bound form a 3-7 membered non-aromatic carbocyclyl or a 4-7 membered non-aromatic heterocyclyl, wherein the heterocyclyl formed by two R4 comprises one to three heteroatoms independently selected from N, S and O;
any substitutable carbon atom on ring A is optionally:
(i) substituted with one to two substituents independently selected from —(C1-C4)alkyl, and —(C0-C4)alkylene-carbocyclyl; or
(ii) substituted with ═O;
(iii) taken together with an adjacent ring atom to form a 3-7 membered saturated carbocyclyl or a 4-7 membered saturated heterocyclyl ring; or
(iv) spyrofused to a 3-7 membered saturated carbocyclyl;
any additional N heteroatom on ring A is substituted with hydrogen, C1-C6 alkyl, carbocyclyl, or heterocyclyl;
each alkyl or alkylene in Structural Formula I is optionally and independently substituted with one or more substituents independently selected from halo, —OH, ═O, —O—(C1-C4)alkyl, fluoro-substituted-(C1-C4)alkyl, —S(O)m—(C1-C4)alkyl and —N(R5)(R5);
each carbocyclyl or heterocyclyl portion of a substituent of ring A or the saturated heterocyclic ring fused to ring A is optionally and independently substituted with one or more substituents independently selected from halo, —(C1-C4)alkyl, —OH, ═O, —O—(C1-C4)alkyl, —(C1-C4)alkylene-O—(C1-C4)alkyl, halo-substituted-(C1-C4)alkyl, halo-substituted-O—(C1-C4)alkyl, —C(O)—(C1-C4)alkyl, —C(O)-(fluoro-substituted-(C1-C4)alkyl), —S(O)m—(C1-C4)alkyl, —N(R5)(R5) and CN;
each R5 is independently selected from hydrogen and (C1-C4)alkyl, wherein each alkyl in the group represented by R5 is optionally and independently substituted with one or more substituents independently selected from —(C1-C4)alkyl, (C3-C6)cycloalkyl, halo, —OH, —O—(C1-C4)alkyl, and
—(C1-C4)alkylene-O—(C1-C4)alkyl; and
each m is independently 1 or 2.
3. The compound of claim 1 , wherein X is selected from fluoro, chloro, hydrogen, methoxy, methyl, trifluoromethyl, trifluoromethoxy and dimethylamino.
4. The compound of claim 2 , wherein X is selected from fluoro, chloro, methoxy, methyl, trifluoromethyl, trifluoromethoxy and dimethylamino.
5. The compound of claim 1 , wherein R1 is selected from hydrogen, —(C1-C8)alkyl, —(C2-C4)alkylene-O—(C1-C4)alkyl, —(C0-C3)alkylene-(saturated heterocycle), —(C0-C3)alkylene-(C3-C7)cycloalkyl, —C(O)—(C1-C3)alkylene-N(R2)(R3), or R1 taken together with a ring atom adjacent to the nitrogen atom to which R1 is bound forms a saturated heterocyclic ring fused to ring A; wherein:
any alkyl or alkylene portion of R1 or the saturated heterocyclic ring fused to ring A is optionally substituted with fluoro or hydroxy;
R2 is selected from hydrogen and (C1-C3)alkyl;
R3 is selected from (C1-C3)alkyl and (C3-C7)cycloalkyl, or
R2 and R3, taken together with the nitrogen atom to which they are bound form a 4-7 membered saturated heterocyclyl, wherein the heterocyclyl is optionally substituted with fluoro.
6. The compound of claim 5 , wherein R1 is selected from hydrogen; (C1-C3)straight alkyl optionally substituted with one or more of: 1 to 5 methyl groups, a single hydroxy group, a single methoxy group, 1 to 3 fluoro groups, a single saturated heterocycle, and a single (C3-C7)cycloalkyl group; (C3-C7)cycloalkyl; tetrahydrofuranyl; and —C(O)—CH2—N(R2)(R3), wherein R2 and R3 are simultaneously methyl; R2 is hydrogen and R3 is C3-C7 cycloalkyl; or R2 and R3, taken together with the nitrogen atom to which they are bound form a pyrrolidinyl ring optionally substituted with fluoro, or
R1 taken together with a ring atom adjacent to the nitrogen atom to which R1 is bound forms a pyrrolidinyl or piperidinyl ring fused to ring A, wherein the pyrrolidinyl or piperidinyl ring fused to ring A is optionally substituted with hydroxy or fluorine.
7. The compound of claim 1 , wherein:
ring A is selected from
R6a is selected from hydrogen and methyl; and
R6 is selected from hydrogen, (C1-C4)alkyl optionally substituted with hydroxy or phenyl; or
R6 taken together with R1 and the nitrogen atom and the carbon atom to which they are respectively bound form a pyrrolidinyl or piperidinyl ring fused to ring A, wherein the pyrrolidinyl or piperidinyl ring is optionally substituted with —OH or —F; or
R6 and R6a are taken together with the carbon atom to which they are both bound to form a cyclopropyl ring; and
R7a and R7b are each hydrogen or are taken together to form ═O.
8. The compound of claim 1 , wherein:
ring A is
9. The compound of claim 8 , wherein:
X is selected from fluoro, chloro, methoxy, trifluoromethyl, and dimethylamino; and
R1 is selected from 3-fluoroethyl, propyl, isopropyl, sec-butyl, tert-butyl, (C3-C5)cycloalkyl, —C(CH3)2-cyclopropyl, —C(O)CH2NH-cyclopentyl, —C(O)CH2-(3-fluoropyrrolidin-1-yl); and when X is methoxy or dimethylamino, R1 is further selected from tert-pentyl.
11. The compound of claim 10 , wherein R1 is selected from isopropyl, propyl or ethyl.
12. The compound of claim 1 , wherein:
ring A is
X is fluoro;
R1 is selected from hydrogen, (C1-C4)alkyl;
R6 is selected from hydrogen, (R)-(C1-C4)alkyl, or —CH2-phenyl, or
R1 and R6 taken together with the nitrogen atom and the carbon atom to which they are respectively bound form a pyrrolidinyl ring fused to ring A;
R7a and R7b are each hydrogen or are taken together to form ═O;
wherein at least one of R1, and R6 is other than hydrogen.
13. The compound of claim 12 , wherein:
R1 is selected from hydrogen, methyl, isobutyl, and tert-butyl; and
R6 is selected from hydrogen, (R)-methyl, (R)-isobutyl, (R)-sec-butyl, (R)-isopropyl, and —CH2-phenyl, or
R1 and R6 taken together with the nitrogen atom and the carbon atom to which they are respectively bound form a pyrrolidinyl ring fused to ring A.
14. A compound of claim 1 selected from any one of Compounds 100, 103, 110, 112, 113, 114, 115, 118, 119, 120, 121, 123, 124, 125, 126, 127, 128, 129, 130, 132, 135, 138, 141, 142, 143, 144, 145, 148, and 149 or a pharmaceutically acceptable salt thereof.
15. A compound of claim 1 selected from any one of Compounds 300, 304, and 307 or a pharmaceutically acceptable salt thereof.
16. A compound of claim 1 selected from any one of Compounds 400, 404, 405, 406, 407, 408, 409, 410, 412, 413, 416, 417, 419, 421, 422, 423, 424, 427, 428, and 429 or a pharmaceutically acceptable salt thereof.
17. A pharmaceutical composition comprising a pharmaceutically acceptable carrier or diluent and a compound of claim 1 .
18. A method for treating or preventing an infection or colonization in a subject comprising administering to the subject an effective amount of a compound of claim 1 or a pharmaceutically acceptable salt thereof.
19. (canceled)
20. The method of claim 18 , wherein the infection is caused by a Gram-positive organism.
21. (canceled)
22. (canceled)
23. (canceled)
24. (canceled)
25. The method of claim 18 , wherein the infection is caused by a Gram-negative organism.
26-47. (canceled)
48. A method for treating or preventing a respiratory infection in a subject comprising administering to the subject an effective amount of a compound of claim 1 or a pharmaceutically acceptable salt thereof.
49-50. (canceled)
51. A method for treating or preventing a skin infection in a subject comprising administering to the subject an effective amount of a compound of claim 1 or a pharmaceutically acceptable salt thereof.
52-53. (canceled)
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US10315992B2 (en) | 2012-08-31 | 2019-06-11 | Tetraphase Pharmaceuticals, Inc. | Tetracyline compounds |
US10913712B2 (en) | 2012-08-31 | 2021-02-09 | Tetraphase Pharmaceuticals, Inc. | Tetracycline compounds |
US10961190B2 (en) | 2016-10-19 | 2021-03-30 | Tetraphase Pharmaceuticals, Inc. | Crystalline forms of eravacycline |
US11578044B2 (en) | 2016-10-19 | 2023-02-14 | Tetraphase Pharmaceuticals, Inc. | Crystalline forms of eravacycline |
WO2021207217A1 (en) * | 2020-04-06 | 2021-10-14 | University Of Virginia Patent Foundation | Compositions and methods for treating viruses |
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CN106008317A (en) | 2016-10-12 |
SG184372A1 (en) | 2012-11-29 |
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JP2013523761A (en) | 2013-06-17 |
CN103180295A (en) | 2013-06-26 |
DK2552890T3 (en) | 2017-04-03 |
KR20130023231A (en) | 2013-03-07 |
MX2012011453A (en) | 2013-02-15 |
AR081064A1 (en) | 2012-06-06 |
CA2799727A1 (en) | 2011-10-06 |
WO2011123536A1 (en) | 2011-10-06 |
EP2552890B1 (en) | 2017-01-04 |
US20110269714A1 (en) | 2011-11-03 |
AU2011235176B2 (en) | 2015-05-14 |
CN103180295B (en) | 2016-06-08 |
TW201200493A (en) | 2012-01-01 |
KR101879751B1 (en) | 2018-08-16 |
JP2016014058A (en) | 2016-01-28 |
CA2799727C (en) | 2018-06-12 |
PL2552890T3 (en) | 2017-07-31 |
CN106008317B (en) | 2019-08-23 |
TWI592390B (en) | 2017-07-21 |
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