US20050250823A1 - Gyrase inhibitors - Google Patents
Gyrase inhibitors Download PDFInfo
- Publication number
- US20050250823A1 US20050250823A1 US11/176,156 US17615605A US2005250823A1 US 20050250823 A1 US20050250823 A1 US 20050250823A1 US 17615605 A US17615605 A US 17615605A US 2005250823 A1 US2005250823 A1 US 2005250823A1
- Authority
- US
- United States
- Prior art keywords
- methyl
- indazol
- pyridin
- thiazol
- compound
- 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
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- HQHGUJSLJMHFAY-UHFFFAOYSA-N COC(=O)C1=C(C2=CC=C(F)C=C2)SC(C2=NNC3=C(C)C=CC=C23)=N1 Chemical compound COC(=O)C1=C(C2=CC=C(F)C=C2)SC(C2=NNC3=C(C)C=CC=C23)=N1 HQHGUJSLJMHFAY-UHFFFAOYSA-N 0.000 description 1
- CCIGOTWNPJEESI-UHFFFAOYSA-N COC(=O)C1=C(C2=CC=CC=C2)SC(C2=NNC3=C(Cl)C=CC=C23)=N1 Chemical compound COC(=O)C1=C(C2=CC=CC=C2)SC(C2=NNC3=C(Cl)C=CC=C23)=N1 CCIGOTWNPJEESI-UHFFFAOYSA-N 0.000 description 1
- IDLSOYHMHFOUBY-UHFFFAOYSA-N COC(=O)C1=C(C2=CC=CC=C2)SC(C2=NNC3=CC=CC=C32)=N1 Chemical compound COC(=O)C1=C(C2=CC=CC=C2)SC(C2=NNC3=CC=CC=C32)=N1 IDLSOYHMHFOUBY-UHFFFAOYSA-N 0.000 description 1
- UCFDUMKOARWKEB-UHFFFAOYSA-N COC(=O)C1=C(C2=CC=CN=C2)SC(C2=NNC3=C(C)C(Cl)=CC=C23)=N1 Chemical compound COC(=O)C1=C(C2=CC=CN=C2)SC(C2=NNC3=C(C)C(Cl)=CC=C23)=N1 UCFDUMKOARWKEB-UHFFFAOYSA-N 0.000 description 1
- ZFDYQSBQRAMPID-UHFFFAOYSA-N COC(=O)C1=C(C2=CC=CN=C2)SC(C2=NNC3=CC(C)=CC=C32)=N1 Chemical compound COC(=O)C1=C(C2=CC=CN=C2)SC(C2=NNC3=CC(C)=CC=C32)=N1 ZFDYQSBQRAMPID-UHFFFAOYSA-N 0.000 description 1
- JXEWOEFXTNOWMB-UHFFFAOYSA-N COC(=O)C1=C(C2=CN=C(C(F)(F)F)C=C2)SC(C2=NNC3=C(C)C=CC=C23)=N1 Chemical compound COC(=O)C1=C(C2=CN=C(C(F)(F)F)C=C2)SC(C2=NNC3=C(C)C=CC=C23)=N1 JXEWOEFXTNOWMB-UHFFFAOYSA-N 0.000 description 1
- QJBPZHDTYDSVKF-UHFFFAOYSA-N COC(=O)C1=C(C2=CN=C(Cl)C=C2)SC(C2=NNC3=C(C)C=CC=C23)=N1 Chemical compound COC(=O)C1=C(C2=CN=C(Cl)C=C2)SC(C2=NNC3=C(C)C=CC=C23)=N1 QJBPZHDTYDSVKF-UHFFFAOYSA-N 0.000 description 1
- TVMRGTLIFGWBKC-UHFFFAOYSA-N COC(=O)C1=CC=C(C2=CSC(C3=NNC4=CC=CC=C43)=N2)C=C1 Chemical compound COC(=O)C1=CC=C(C2=CSC(C3=NNC4=CC=CC=C43)=N2)C=C1 TVMRGTLIFGWBKC-UHFFFAOYSA-N 0.000 description 1
- KKCQVAULXFWTCV-UHFFFAOYSA-N COC1=CC(C2=C(C)N=C(C3=NNC4=C(Cl)C=CC=C34)S2)=CC=C1 Chemical compound COC1=CC(C2=C(C)N=C(C3=NNC4=C(Cl)C=CC=C34)S2)=CC=C1 KKCQVAULXFWTCV-UHFFFAOYSA-N 0.000 description 1
- HFMLFIWSUOPIGU-UHFFFAOYSA-N COC1=CC(C2=C(C)N=C(C3=NNC4=CC=CC=C43)S2)=CC=C1 Chemical compound COC1=CC(C2=C(C)N=C(C3=NNC4=CC=CC=C43)S2)=CC=C1 HFMLFIWSUOPIGU-UHFFFAOYSA-N 0.000 description 1
- FYOZGDCROZCHCA-UHFFFAOYSA-N COC1=CC(C2=C(C)SC(C3=NNC4=CC=CC=C43)=N2)=CC=C1O Chemical compound COC1=CC(C2=C(C)SC(C3=NNC4=CC=CC=C43)=N2)=CC=C1O FYOZGDCROZCHCA-UHFFFAOYSA-N 0.000 description 1
- QFFLVXMBATZOEO-UHFFFAOYSA-N COC1=CC=CC(CC2=CN=C(C3=NNC4=CC=CC=C43)S2)=C1 Chemical compound COC1=CC=CC(CC2=CN=C(C3=NNC4=CC=CC=C43)S2)=C1 QFFLVXMBATZOEO-UHFFFAOYSA-N 0.000 description 1
- LIPUIDZALHDRLQ-UHFFFAOYSA-N COCCNC(=O)C1=C(C2=CC=CC=C2)SC(C2=NNC3=CC=CC=C32)=N1 Chemical compound COCCNC(=O)C1=C(C2=CC=CC=C2)SC(C2=NNC3=CC=CC=C32)=N1 LIPUIDZALHDRLQ-UHFFFAOYSA-N 0.000 description 1
- ANYLDKFISMKZAI-UHFFFAOYSA-N O=C(C1=C(C2=CC=CN=C2)SC(C2=NNC3=CC(Cl)=CC=C32)=N1)N1CCNCC1 Chemical compound O=C(C1=C(C2=CC=CN=C2)SC(C2=NNC3=CC(Cl)=CC=C32)=N1)N1CCNCC1 ANYLDKFISMKZAI-UHFFFAOYSA-N 0.000 description 1
- VRDNOQWLZQWIKH-UHFFFAOYSA-N O=C(C1=CC=C(C2=CSC(C3=NNC4=CC=CC=C43)=N2)C=C1)N1CCOCC1 Chemical compound O=C(C1=CC=C(C2=CSC(C3=NNC4=CC=CC=C43)=N2)C=C1)N1CCOCC1 VRDNOQWLZQWIKH-UHFFFAOYSA-N 0.000 description 1
- JVKPXIQZJTWHTE-UHFFFAOYSA-N O=C(NCC(O)CO)C1=C(C2=CC=CC=C2)SC(C2=NNC3=CC=CC=C32)=N1 Chemical compound O=C(NCC(O)CO)C1=C(C2=CC=CC=C2)SC(C2=NNC3=CC=CC=C32)=N1 JVKPXIQZJTWHTE-UHFFFAOYSA-N 0.000 description 1
- FLZWIPJPKMMVPJ-UHFFFAOYSA-N O=C(NCC1CC1)C1=C(C2=CC=CC=C2)SC(C2=NNC3=CC=CC=C32)=N1 Chemical compound O=C(NCC1CC1)C1=C(C2=CC=CC=C2)SC(C2=NNC3=CC=CC=C32)=N1 FLZWIPJPKMMVPJ-UHFFFAOYSA-N 0.000 description 1
- CWRPICQJRICZPS-UHFFFAOYSA-N O=C(O)C1=C(C2=CC=CC=C2)SC(C2=NNC3=CC=CC=C32)=N1 Chemical compound O=C(O)C1=C(C2=CC=CC=C2)SC(C2=NNC3=CC=CC=C32)=N1 CWRPICQJRICZPS-UHFFFAOYSA-N 0.000 description 1
- DHIULGQYSICWIG-UHFFFAOYSA-N O=C(O)C1=CC(C2=CSC(C3=NNC4=CC=CC=C43)=N2)=CC=C1 Chemical compound O=C(O)C1=CC(C2=CSC(C3=NNC4=CC=CC=C43)=N2)=CC=C1 DHIULGQYSICWIG-UHFFFAOYSA-N 0.000 description 1
- NOMZVLQGWLZDSC-UHFFFAOYSA-N O=C(O)C1=CC=C(C2=CSC(C3=NNC4=CC=CC=C43)=N2)C=C1 Chemical compound O=C(O)C1=CC=C(C2=CSC(C3=NNC4=CC=CC=C43)=N2)C=C1 NOMZVLQGWLZDSC-UHFFFAOYSA-N 0.000 description 1
- DJJCONDSFUZPPC-UHFFFAOYSA-N OC1=C(C2=CC=CC=C2)SC(C2=NNC3=C(F)C=CC=C23)=N1 Chemical compound OC1=C(C2=CC=CC=C2)SC(C2=NNC3=C(F)C=CC=C23)=N1 DJJCONDSFUZPPC-UHFFFAOYSA-N 0.000 description 1
- XWHIFQPSUZFYFO-UHFFFAOYSA-N OC1=CC=CC=C1C1=C(O)N=C(C2=NNC3=CC=CC=C32)S1 Chemical compound OC1=CC=CC=C1C1=C(O)N=C(C2=NNC3=CC=CC=C32)S1 XWHIFQPSUZFYFO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
- C07D417/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing three or more hetero rings
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- 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
- C07D487/08—Bridged systems
Definitions
- This invention relates to anti-bacterial compounds and methods of using them to treat bacterial infections.
- DNA gyrase is an enzyme found in many gram-positive and gram-negative bacteria. It is believed that DNA gyrase participates in the unfolding of the DNA double helix that takes before DNA replication by catalyzing ATP-dependent negative super-coiling of the DNA. DNA gyrase is believed to contain a complex of dimeric subunits, called gyrases A and B, that form an A 2 B 2 active enzyme complex. It is further believed that the A 2 subunit carries out DNA binding, cleavage, and rejoining, while the B 2 subunit mediates ATPase activity.
- Anti-bacterial agents that target the A subunit such as quinolones, now face growing resistance among clinically important bacterial pathogens. Attempts to inhibit the B, subunit of gyrase instead have not been entirely successful. Agents that inhibit catalysis of ATP hydrolysis by the B subunit (e.g., coumarins, such as novobiocin, and the cyclothialidines) were found to have low antimicrobial activities and unfavorable toxicity profiles (not related to the mechanism of action).
- the present invention provides compounds comprising an indazolyl group and a thiazolyl group, preferably 7-substituted 3-(thiazol-2-yl)-1H-indazole compounds in which the indazolyl group and the thiazolyl group are each independently optionally substituted.
- the compounds are useful for the treatment or prophylaxis of bacterial infections in mammals.
- a preferred embodiment provides a compound comprising an indazolyl group and a thiazolyl group, the compound being represented by the structure
- compositions comprising the compound of claim 1 and a pharmaceutically acceptable carrier.
- Another preferred embodiment provides method of treating or preventing a bacterial infection in a mammal, comprising administering to the mammal an effective amount of a compound of the formula (I) or composition thereof.
- Another preferred embodiment provides a method for making a compound of the formula (I), comprising: treating an optionally substituted indazole represented by the formula
- Hydrocarbon as used here includes alkyl, cycloalkyl, alkenyl, alkynyl, aryl, and combinations thereof.
- Alkoxy or “alkoxyl” refers to hydrocarbon groups attached to the parent structure through an oxygen atom. “Lower alkoxy” refers to groups containing one to four carbon atoms.
- Aryl refers to monocyclic 5- or 6-membered, bicyclic 9- or 10-membered, and tricyclic 13- or 14-membered aromatic carbocyclic rings, optionally bearing one or more substituents.
- Non-limiting examples of such rings include benzene, naphthalene, indane, tetralin, and fluorene, and of suitable substituents include halogen, —R 1 , —OR 1 , —OH, —SH, —SR 1 , protected OH (such as acyloxy), optionally substituted phenyl (Ph), optionally substituted heterocycles, —NO 2 , —CN, optionally substituted amino groups, optionally substituted carboxamido groups, —NHCONHR 1 , —NHCONR 1 R 2 , —NR 1 COR 2 , —NHCO 2 R 1 , —CO 2 R 1 , CO 2 H, COR 1 , CONHR 1 , —CONR 1 R 2
- Heteroaryl refers to aryl groups containing up to three N, O, and/or S heteroatoms.
- Non-limiting examples include imidazole, pyridine, indole, thiophene, benzopyranone, thiazole, thiadiazole, furan, benzimidazole, quinoline, isoquinoline, quinoxaline, pyrimidine, pyrazine, tetrazole and pyrazole.
- Heterocycle refers to a cycloalkyl or aryl group in which from one to three carbon atoms is replaced by N, O and/or S heteroatoms.
- the nitrogen and sulfur heteroatoms may optionally be oxidized, and the nitrogen heteroatom may optionally be quaternized or substituted with substituents such as R 1 , COR 1 , SO 2 R 1 , and CO 2 R 1 , where R 1 is an optionally substituted aliphatic group.
- heterocycles include piperidine, morpholine, thiomorpholine, piperazine, pyrrolidine, pyrrole, pyridazine, oxazole, oxadiazole, oxazoline, isoxazole, dioxane, tetrahydrofuran; and phenothiazine.
- “Substituted” in reference to, e.g., an alkyl or other group refers to replacement of H atoms in that group with one or more of the following: lower alkyl; allyl; halogen; haloalkyl; hydroxy, lower alkoxy; hydroxy lower alkyl; carboxy; carboalkoxy (also referred to as alkoxycarbonyl); carboxyalkoxy; carboxamido (also referred to as alkylaminocarbonyl); cyano; formyl; acyl; nitro; amino; alkylamino; dialkylamino; anilino; mercapto; alkylthio; sulfoxide; sulfone; acylamino; amidino; phenyl; benzyl; heteroaryl; heterocycle; phenoxy; benzoyl; benzoyl substituted with amino, hydroxy, methoxy, methyl or halo; benzyloxy and heteroaryloxy.
- “Synthetically produced” means produced in a laboratory or manufacturing process, as opposed to produced in vivo through a naturally-occurring process.
- “Aliphatic” as used here means straight chained, branched or cyclic C 1 -C 12 hydrocarbons whether saturated or unsaturated.
- Non limiting examples of aliphatic groups include substituted or unsubstituted linear, branched or cyclic alkyl, alkenyl, alkynyl groups and hybrids thereof such as (cycloalkyl)alkyl, (cycloalkenyl)alkyl or (cycloalkyl)alkenyl.
- “Pharmaceutically acceptable salt” refers to salts that are, within the scope of sound medical judgement, suitable for use in contact with the tissues of humans and lower animals without undue toxicity, irritation, allergic response and the like, and are commensurate with a reasonable benefit/risk ratio.
- Pharmaceutically acceptable salts are well known in the art. For example, S. M. Berge, et al. describe pharmaceutically acceptable salts in detail in J. Pharmaceutical Sciences, 1977, 66: 1-19.
- the salts can be prepared in situ during the final isolation and purification of compounds of the formula (I) as described below, or separately by reaction of the free base with a suitable organic acid.
- acid addition salts include acetate, adipate, alginate, ascorbate, aspartate, benzenesulfonate, benzoate, bisulfate, borate, butyrate, camphorate, camphersulfonate, citrate, cyclopentanepropionate, digluconate, dodecylsulfate, ethanesulfonate, fumarate, glucoheptonate, glycerophosphate, hemisulfate, heptonate, hexanoate, hydrobromide, hydrochloride, hydroiodide, 2-hydroxy-ethanesulfonate, lactobionate, lactate, laurate, lauryl sulfate, malate, maleate, malonate, methanesulfonate, 2-naphthalenesulfonate, nicotinate, nitrate, oleate, oxalate, palmitate, palmoate, pec
- alkali or alkaline earth metal salts include sodium, lithium, potassium, calcium, magnesium, and the like, as well as nontoxic ammonium, quaternary ammonium, and amine cations, including, but not limited to ammonium, tetramethylammonium, tetraethylammonium, methylamine, dimethylamine, trimethylamine, triethylamine, ethylamine, and the like.
- “Pharmaceutically acceptable ester” as used herein refers to esters that hydrolyze in vivo and include those that break down readily in the human body to leave the parent compound or a salt thereof.
- Suitable ester groups include, for example, those derived from pharmaceutically acceptable aliphatic carboxylic acids, particularly alkanoic, alkenoic, cycloalkanoic and alkanedioic acids, in which each alkyl or alkenyl moiety advantageously has not more than 6 carbon atoms.
- Examples of particular esters include formates, acetates, propionates, butyrates, acrylates and ethylsuccinates.
- “Pharmaceutically acceptable solvate” refers to an aggregate that comprises one or more molecules of the solute, such as a formula (I) compound, with one or more molecules of a solvent.
- the solvent is water, the resulting solvate may be referred to as a “hydrate.”
- “Pharmaceutically acceptable carrier” refers to a non-toxic carrier that may be administered to a patient, together with a compound of this invention, and that does not adversely affect the pharmacological activity of the compound.
- Prodrug refers compounds that are transformed in vivo to yield a compound of the formula (1) below, or a salt or metabolite thereof. The transformation may occur by various mechanisms, such as through hydrolysis in blood.
- a discussion of the use of prodrugs is provided by T. Higuchi and W. Stella, “Pro-drugs as Novel Delivery Systems,” Vol. 14 of the A.C.S. Symposium Series, and in Bioreversible Carriers in Drug Design, ed. Edward B. Roche, American Pharmaceutical Association and Pergamon Press, 1987.
- a prodrug can comprise an ester formed by the replacement of the hydrogen atom of the acid group with a group such as (C 1 -C 8 )alkyl, (C 2 -C 12 )alkanoyloxymethyl, 1-(alkanoyloxy)ethyl having from 4 to 9 carbon atoms, 1-methyl-1-(alkanoyloxy)-ethyl having from 5 to 10 carbon atoms, alkoxycarbonyloxymethyl having from 3 to 6 carbon atoms, 1-(alkoxycarbonyloxy)ethyl having from 4 to 7 carbon atoms, 1-methyl-1-(alkoxycarbonyloxy)ethyl having from 5 to 8 carbon atoms, N-(alkoxycarbonyl)aminomethyl having from 3 to 9 carbon atoms, 1-(N-(alkoxycarbonyl)amino)ethyl having from 4 to 10 carbon atoms
- a prodrug can be formed by the replacement of the hydrogen atom of the alcohol group with a group such as (C 1 -C 6 )alkanoyloxymethyl, 1-((C 1 -C 6 )alkanoyloxy)ethyl, 1-methyl-1-((C 1 -C 6 )alkanoyloxy)ethyl, (C 1 -C 6 )alkoxycarbonyloxymethyl, N-C 1 -C 6 )alkoxycarbonylaminomethyl, succinoyl, (C 1 -C 6 )alkanoyl, ⁇ -amino(C 1 -C 4 )alkanoyl, arylacyl and ⁇ -aminoacyl, or ⁇ -aminoacyl- ⁇ -aminoacyl, where each ⁇ -aminoacyl group is independently selected from the naturally-occurring L-amino acids, P(O),
- a prodrug can be formed by the replacement of a hydrogen atom in the amine group with a group such as R-carbonyl, RO-carbonyl, NRR′-carbonyl where R and R′ are each independently ((C 1 -C 10 )alkyl, (C 3 -C 7 )cycloalkyl, benzyl, or R-carbonyl is a natural ⁇ -aminoacyl or natural ⁇ -aminoacyl-natural ⁇ -aminoacyl, —C(OH)C(O)OY wherein (Y is H, (C 1 -C 6 )alkyl or benzyl), —C(OY 0 )Y 1 wherein Y 0 is (C 1 -C 4 ) alkyl and Y 1 is ((C 1 -C 6 )alkyl, carboxy(C 1 -C 6 )alkyl, amino(C 1 -C 4
- a preferred embodiment provides compounds of the formula (I) comprising an indazolyl group and a thiazolyl group:
- R7 is preferably selected from the group consisting of C 1 -C 6 hydrocarbon, lower alkoxy, lower thioalkoxy, CN, NO 2 , halogen, CF 3 , and OCF 3 . More preferably, R7 is selected from the group consisting of methyl, ethyl, propyl, allyl, F, Cl, and Br.
- the C 1 -C 6 hydrocarbon, indazolyl group, and thiazolyl group are optionally substituted, preferably substituted on carbon.
- the indazolyl group preferably bears at least one substituent selected from the group consisting of optionally substituted C 1 -C 6 hydrocarbon (e.g., methyl, ethyl, propyl, allyl, methylcyclopropyl), lower alkoxy, optionally substituted heterocycle, CN, NO 2 , halogen (e.g., F, Cl, Br, I), CF 3 and OCF 3 .
- the substituent is attached to a carbon atom of the indazolyl group rather than a nitrogen atom.
- the thiazolyl group preferably bears at least one substituent selected from the group consisting of optionally substituted C 1 -C 10 hydrocarbon (e.g., methyl, ethyl), optionally substituted C 1 -C 10 heterocycle, optionally substituted carboxamido, optionally substituted aminocarboxy, optionally substituted C 1 -C 6 alkoxy, optionally substituted C 1 -C 6 alkoxycarbonyl (e.g., COOCH 3 , COOCH 2 CH 3 ), OH, COOH, COOR 3 , and CONR 8 R 9 ; wherein R 3 is selected from the group consisting of optionally substituted heterocycle and C 1 -C 6 alkyl substituted by heterocycle; wherein R 8 and R 9 are independently selected from the group consisting of H, optionally substituted heterocycle, and optionally substituted C 1 -C 6 hydrocarbon, wherein R 8 and R 9 may together form a four-, five-, or six-membered optionally substituted heterocycl
- substituents thus include methyl, ethyl, OH, phenyl, COOH, COOCH 3 , COOCH 2 CH 3 , and N(CH 3 )(CH 2 CH 3 ).
- the thiazolyl group is attached to a carbonyl carbon of at least one substituent represented by a structure selected from the group consisting of
- the phenyl is optionally substituted with at least one substituent selected from the group consisting of OH, OCH 3 , F, Cl, Br, optionally substituted piperazin-1-yl, and optionally substituted morpholin-4-yl.
- phenyl groups include 3-hydroxyphenyl, 4-hydroxyphenyl, 3-methoxyphenyl, 3-fluorophenyl, 4-fluorophenyl, 4-fluoro-3-hydroxyphenyl, 3,4-difluoro-phenyl, 3,5-difluoro-phenyl, 4-bromo-3-methoxy-phenyl, 4-(4-methyl-piperazin-1-yl)-phenyl, and 4-(morpholin-4-yl)-phenyl.
- the pyridyl is optionally substituted with at least one substituent selected from the group consisting of C 1 -C 6 alkyl, F, Cl, Br, I, CF 3 , 3,5-dimethyl-piperazin-1-yl, and morpholin-4-yl.
- substituents selected from the group consisting of C 1 -C 6 alkyl, F, Cl, Br, I, CF 3 , 3,5-dimethyl-piperazin-1-yl, and morpholin-4-yl.
- pyridyl groups include pyridin-3-yl, 6-methyl-pyridin-3-yl, 6-chloro-pyridin-3-yl, and 6-trifluoromethyl-pyridin-3-yl
- the thiazolyl group may optionally bear two substituents.
- each of the two substituents on the thiazolyl group is independently selected from the group consisting of optionally substituted C 1 -C 10 hydrocarbon, COOH, optionally substituted C 1 -C 6 alkoxycarbonyl, OH, COOR 3 , and CONR 8 R 9 , wherein R 3 is selected from the group consisting of optionally substituted heterocycle and C 1 -C 6 alkyl substituted by heterocycle; wherein R 8 and R 9 are independently selected from the group consisting of H, optionally substituted heterocycle, and optionally substituted C 1 -C 6 hydrocarbon, wherein R 8 and R 9 may together form a four-, five-, or six-membered optionally substituted heterocyclic ring including the N atom to which R and R′ are attached, and wherein for said ring one to three carbon atoms may optionally each independently be replaced by an atom selected from the group consisting of N
- a compound of the formula (1) includes pharmacologically acceptable esters, amides, salts (e.g., metal salts), hydrates, and other derivatives thereof (known in the art as “pro-drugs”) that undergo biotransformation to yield the active drug.
- Pro-drugs are described generally in, e.g., Goodman and Gilman's “Biotransformation of Drugs,” in the Pharmacological Basis of Therapeutics, 8 th Ed., McGraw Hill, Int. Ed.
- Particularly favored derivatives or prodrugs are those that increase the bioavailability of the compounds of the formula (I) when such compounds are administered to a mammal (e.g., by allowing an orally administered compound to be more readily absorbed into the blood) or that enhance delivery of the parent compound to a biological compartment (e.g., the brain or lymphatic system) relative to the parent species.
- compositions comprising a compound of the formula (I) and a pharmaceutically acceptable carrier.
- Pharmaceutically acceptable carriers useful in these compositions include, but are not limited to, ion exchangers, alumina, aluminum stearate, lecithin, serum proteins, such as human serum albumin, buffer substances such as phosphates, glycine, sorbic acid, potassium sorbate, partial glyceride mixtures of saturated vegetable fatty acids, water, salts or electrolytes, such as protamine sulfate, disodium hydrogen phosphate, potassium hydrogen phosphate, sodium chloride, zinc salts, colloidal silica, magnesium trisilicate, polyvinyl pyrrolidone, cellulose-based substances, polyethylene glycol, sodium carboxymethylcellulose, polyacrylates, waxes, polyethylene-polyoxypropylene-block polymers, wool fat and self-emulsifying drug delivery systems (SEDDS) such as a-tocopherol, polyethyleneglycol 1000 succinate, or other
- Certain compounds of the formula (I) possess an acidic or basic group, and may therefore form salts with pharmaceutically-acceptable cations or anions. All such pharmaceutically-acceptable salts are contemplated in the present invention.
- the identities of pharmaceutically-acceptable cations and anions are well-known in the art, and appear in such compendia as the Physicians' Desk Reference, 56 th ed., Medical Economics Company, Inc., Montvale, N.J., 2002.
- the compounds may also form hydrates or exist in a substantially anhydrous form.
- compositions for parenteral administration preferably contain a pharmaceutically acceptable amount of a compound of the formula (I) as a soluble salt dissolved in a pharmaceutically acceptable liquid carrier such as, for example, water-for-injection and a buffer to provide a suitably buffered isotonic solution having, for example, a pH of about 3.5-6.
- a pharmaceutically acceptable liquid carrier such as, for example, water-for-injection
- a buffer to provide a suitably buffered isotonic solution having, for example, a pH of about 3.5-6.
- Suitable buffering agents include, for example, trisodium orthophosphate, sodium bicarbonate, sodium citrate, N-methylglucamine, L(+)-lysine and L(+)-arginine.
- the compounds of the formula (1) generally will be dissolved in the carrier in an amount sufficient to provide a pharmaceutically acceptable injectable concentration in the range of about 1 mg/mL to about 400 mg/mL of solution.
- the resulting liquid pharmaceutical composition will be so administered as to obtain a dosage effective against bacteria.
- Nonlimiting examples of preferred compounds of the formula (I) include:
- Acetylation preferably comprises reacting an aryl amine with an acetyl halide to form an optionally substituted aryl amide represented by the formula (II):
- R7 is preferably selected from the group consisting of C 1 -C 6 hydrocarbon, lower alkoxy, lower thioalkoxy, CN, NO 2 , halogen, CF 3 , and OCF 3 ; wherein the C 1 -C 6 hydrocarbon and the aryl ring of the aryl amide are optionally substituted.
- Acetylation is illustrated by the following: An aryl amine such as aniline (82.5 mmoles) is dissolved in 400 mL of dichloromethane and cooled to 0° C. To this solution is added dropwise acetyl chloride (71 mL, 1 mole) followed by a 200 mL solution of triethyl amine (140 mL, 1 mole). This solution is stirred until reaction is complete. The resulting solid is filtered off and the filtrate poured into brine, extracted twice with dichloromethane, dry filtered and concentrated to give the acetylated amine.
- Cyclization preferably comprises reacting the optionally substituted aryl amide with an alkyl nitrite in the presence of an acid to form an optionally substituted indazole represented by the formula (III):
- Cyclization is illustrated by the following: An acetylated amine such as N-(2,6-dimethylphenyl)-acetamide (1 eq) is dissolved in dichloroethane. To this solution is added acetic acid (1.1 eq) followed by the dropwise addition of isoamyl nitrite (1.1 eq). The reaction is then heated to reflux overnight, poured into water and extracted two additional times with dichloromethane. The extracts are combined, washed with saturated bicarbonate, then brine, and dried with magnesium sulfate filter before being concentrated to a solid. Yields typically 80%.
- Iodination preferably comprises reacting the optionally substituted indazole with iodine in the presence of a base to form an optionally substituted iodinated indazole represented by the formula (IV):
- Iodination is illustrated by the following:
- the optionally substituted indazole represented by the formula (I) (1 eq) is dissolved in DMF (0.5 M) and to this solution is added iodine crystals (3 eq) and KOH pellets (5 eq).
- This reaction is allowed to stir at RT until complete by thin layer chromatography (TLC), approximately 3 hours.
- TLC thin layer chromatography
- the solution is concentrated to about one third volume, and then poured into a 5% NaHSO 3 solution and extracted with ether 3 times.
- the ether extracts are washed with water followed by saturated brine solution and dried over magnesium sulfate.
- the drying agent is removed by filtration and the ether solution concentrated to an orange solid to quantitative yields of the 3-iodo-indazole.
- iodine is a leaving group (LG), and that other leaving groups may be used in place of the iodine in the compound represented by the formula (IV), thereby forming a compound represented by the formula (V):
- LG represents a leaving group.
- Preferred leaving groups include chloro, bromo, iodo, trifluoromethanesulfonate, methanesulfonate, p-toluenesulfonate, and trifluoroacetate. Iodo is a highly preferred leaving group.
- Nitrile displacement preferably comprises reacting the optionally substituted iodinated indazole with a cyanide salt to form an optionally substituted indazole nitrile represented by the formula (VI):
- Nitrile displacement is illustrated by the following: The optionally substituted iodinated indazole is dissolved in anhydrous N-methylpyrrolidinone (0.5 M). To this solution is added sodium cyanide (2 equivalents) and copper (I) cyanide (3 equivalents). The solution is heated to 135° C. for 6 hours or until complete by TLC or HPLC. The reaction is then concentrated to 1/3 volume and partitioned between ether and water. The resulting suspension is filtered through diatomaceous earth. The filtrate is separated and extracted with two additional portions of ether. The combined extracts are washed with water and brine, dried over magnesium sulfate, filtered and concentrated to an off white solid. (50% yield).
- Thioamide formation preferably comprises reacting the optionally substituted indazole nitrile with hydrogen sulfide in the presence of a base to form an optionally substituted indazole thioamide represented by the formula (VU):
- Thioamide formation is illustrated by the following: The optionally substituted indazole nitrile is dissolved in 20% triethyl amine in pyridine and cooled to 0° C. The solution is then saturated for 10 minutes with hydrogen sulfide gas. The reactor is sealed and allowed to stir while warming to room temperature. After 3 hours, or when the reaction is complete by TLC, it is de-gassed with a light vacuum before being concentrated to a yellow solid. The solid is suspended in hexane and filtered under vacuum. The solid is then dried under high vacuum with P 2 O 5 until dried to a constant weight.
- Cyclization preferably comprises reacting the optionally substituted indazole thioamide with a carbonyl compound to form a compound of the formula (I).
- the carbonyl compound is substituted with a leaving group in the position alpha to the carbonyl.
- Preferred carbonyl compounds include optionally substituted ⁇ -LG aldehyde, optionally substituted ⁇ -LG ketone, and optionally substituted ⁇ -LG ester. Cyclization is illustrated in Examples 3-4 below.
- Preferred compounds of the formula (I) exhibit antimicrobial activity against a variety of pathogens. This invention is not bound by any theory of operation, but it is believed that compounds of the formula (I) exert their antimicrobial action by inhibiting gyrase B in the target bacteria in vivo and in vitro.
- a preferred embodiment provides methods of treating or preventing a bacterial infection in a mammal, comprising administering to the mammal a therapeutically effective amount of a compound of the formula (I).
- a compound of the formula (I) will be understood as including reference to pharmaceutical compositions thereof, as well as pharmaceutically acceptable salts, esters, solvates and/or prodrugs thereof.
- the prophylactic or therapeutic dose of the compounds of the present invention, in treatment of a bacterial infection will vary with the severity of the infection and the route by which the drug is administered, such as orally, topically, transdermally, and/or parenterally.
- the compounds of this invention are advantageously administered orally in either solid or liquid dosage forms, with the dose, and perhaps the dose frequency, varying according to the age, body weight, and response of the individual patient.
- the total daily dose range of the present compounds for a 70 kg person is from about 1 mg to about 2000 mg, in single or divided doses, but those skilled in the art can readily determine the appropriate dose through standard methods.
- Preferred compounds of the formula (I) have useful activity against a variety of organisms.
- the activity of the compounds can be assessed by standard testing procedures such as the determination of minimum inhibitory concentration (MIC) by agar dilution as described in “Approved Standard. Methods for Dilution Antimicrobial Susceptibility Tests for Bacteria That Grow Aerobically”, 3 rd ed., published 1993 by the National Committee for Clinical Laboratory Standards, Villanova, Pa., USA.
- a number of the compounds of the formula (I) shown in Table 1 exhibit activity against one or more pathogenic bacteria such as Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, Streptococcus pyogenes, Enterococcus faecalis, Moraxella catarrhalis and H. influenzae .
- Table 2 provides the names and structures of compounds of the formula (I) that were found to have a MIC of about 10 ⁇ M or less in the Methicillin-resistant Staphylococcus aureus assay conducted as described below in Examples 25-154.
- Examples 1-11 below describe the preparations of various specific compounds and are illustrative of the various materials and techniques that may be employed in the synthesis of the compounds of the formula (I).
- Examples 12-24 describe various steps in the synthesis of a particular compound of the formula (I).
- Table 1 provides the names and structures of various preferred compounds of the formula (I) prepared in accordance with the methods described herein.
- Examples 25-154 describe the Methicillin-resistant Staphylococcus aureus assay used to determine the activity of the compounds shown in Table 2.
- the ester obtained above (2-(6-chloro-7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid methyl ester) was hydrolyzed in refluxing methanol in the presence of 1 N NaOH. The reaction mixture was then concentrated and diluted with water. HCl was then added to acidify the solution. The precipitate was filtered, washed by water. The solid was dried under high vacuum. The product was finally purified by RP-HPLC.
- N-(2,4,6-trimethyl-phenyl)-acetamide (23.8 g, 133 mmol) (prepared as described in Example 12) was dissolved in a mixture of toluene (300 mL) and glacial AcOH (10.4 g, 173 mmol, 1.3 eq) and then treated slowly with isoamyl nitrite (20.3 g, 23.2 mL, 173 mmol, 1.3 eq). The mixture was heated at reflux overnight or until all the starting material was consumed as judged by TLC (30% EtOAc-hexanes). The solution was then poured into H 2 O (1.3 L) and extracted with EtOAc (2 ⁇ 300 mL). The combined organic extracts were then washed with saturated aq.
- Indazole 2 (27.2 g, 186 mmol) in DMF (500 mL) was treated with iodine crystals (143.9 g, 567 mmol, 3 eq) and KOH (52.9 g, 945 mmol, 5 eq). The mixture was stirred at room temperature for 2 h or until complete as indicated by TLC (30% EtOAc-hexanes). The solution was concentrated to half volume, poured into 5% aq. NHSO 3 (250 mL) and extracted with Et 2 O (3 ⁇ 250 mL). The organic extracts were combined, washed with H 2 O (2 ⁇ 200 mL) and brine (1 ⁇ 200 mL), dried over (MgSO 4 ), filtered and concentrated.
- Iodide 3 (20 g, 74.0 mmol) was dissolved in anhydrous NMP (300 mL). To this solution were added CuCN (19.9 g, 222 mmol, 3 eq) and NaCN (7.25 g, 148 mmol, 2 eq) and the mixture was heated at 130° C. for 18 h under an inert atmosphere. This solution was then poured into 0.25 M KH 2 PO 4 (1.5 L) and Et 2 O (750 mL) and Celite ( ⁇ 100 g) were added. The suspension was stirred vigorously for 0.5 h then filtered through a sintered glass funnel. The phases were separated and the aqueous layer extracted with Et 2 O (3 ⁇ 200 mL).
- thioamide A (5) (4.5 g, 22.0 mmol) in dry MeOH (100 mL) was heated at 50° C.
- a solution of bromo-pyruvate B (9) (15.5 g, 44.0 mmol) in anhydrous MeOH (88 mL) was treated with collidine (10.2 mL, 77.0 mmol) at 0° C.
- the bromo pyruvate/collidine solution was added dropwise to the thioamide suspension maintained at 50° C. The mixture, becoming homogeneous during addition of the bromo-pyruvate solution, is heated at 50° C.
- the solid is purified by silica gel-plug filtration: an initial eluent of 100% CH 2 Cl 2 removes any nitrile 4 formed (typically 1-3%) and subsequent elution with 2-5% MeOH—CH 2 Cl 2 provides the methyl and ethyl ester mixture.
- RP-HPLC Methods 30-95% B in 8 minutes for the non-dehydrated intermediate. 10-95% B in 8 minutes for the dehydrated final product.
- esters 10 8 g, ⁇ 22 mmol
- MeOH 100 mL
- 1N NaOH 50 mL
- the mixture was concentrated, acidified with 1N HCl (100 mL), and the resulting solid collected by vacuum filtration.
- the solid was rinsed with H 2 O (3 ⁇ 20 mL) and dried under high vacuum to give 7.9 g, (51%) overall from thioamide 5.
- RP-HPLC Method 10-95% B in 8 minutes.
- the catalyst was removed by filtration over Celite; the filter bed was rinsed with MeOH (3 ⁇ 10 mL) and the filtrate evaporated to dryness, and the residue rinsed with a mixture of Et 2 O (2 mL) and hexanes (10 ml) to remove diphenylmethane.
- the product C (14) crystallized upon standing providing 0.77 g (96% yield) of colorless, hygroscopic material that was used as is in subsequent steps.
- DNA gyrase B activities were determined by following the gyrase B-dependent release of inorganic phosphate from ATP hydrolysis and subsequent detection through use of a 7-methyl-6-thioguanosine/phosphorylase spectrophotometric assay. Assays were performed in 25 mM Tris-HCl buffer (pH 7.6), 2 mM MgCl 2 , and 125 mM NaCl, 0.2 mM 7-methyl-6-thioguanosine, purine nucleoside phosphorylase (1 unit/mL), 0.4 mM ATP and various concentrations of the inhibitor compounds prepared in Me 2 SO. The final Me 2 SO concentration in each reaction was 2.5%.
- the compounds of the formula (1) shown in Table 1 were assayed against one or more of Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, Streptococcus pyogenes, Enterococcus faecalis, Moraxella catarrhalis and H. influenzae .
- the concentration of enzyme in the assay ranged from 65 nM for E. faecalis full-length gyrase B to 1 ⁇ M for H. influenzae full-length gyrase B. Reactions were initiated with the addition of ATP, and monitored at 360 nm at room temperature for 30 min.
- Bacteria Preparations Overnight bacterial colonies were suspended in 0.9% NaCl to a turbidity approximately comparable to the MacFarland's standard. The spectrometer was blanked (600 nm) using well-suspended standard. Into a cuvette was placed 0.5 mL of bacterial suspension and absorbance measured. A 0.9% NaCl solution was added to the cuvette, mixed and measured until the absorbance is 0. From this the dilution factor (to achieve an absorbance of 0) for the stock bacterial solution was calculated. A solution of bacteria at this dilution is defined as a stock of 1 ⁇ 10 8 bacteria/mL. A final concentration of 5 ⁇ 10 5 bacteria per well was used for MIC determinations.
- Test compounds of the formula (I) were assayed over a wide range of concentrations using serial dilutions, dropping concentration by half at each step. Controls included wells containing no drug (uninhibited growth control), controls for no additive (no serum etc.), and controls for contamination (additives but no drugs or bacteria).
- the compounds of the formula (I) shown in Table 1 were found to exhibit activity against one or more of Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, Streptococcus pyogenes, Enterococcus faecalis, Moraxella catarrhalis and H. influenzae .
- Table 2 provides the names and structures of compounds of the formula (I) that were found to have a MIC of about 10 ⁇ M or less in the Methicillin-resistant Staphylococcus aureus assay.
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Abstract
Compounds comprising an indazolyl group and a thiazolyl group, preferably 7-substituted 3-(thiazol-2-yl)-1H-indazole compounds in which the indazolyl group and a thiazolyl group are each independently optionally substituted, are useful for the treatment or prophylaxis of bacterial infections in mammals. The compounds are believed to function by inhibiting gyrase B.
Description
- This application claims priority to U.S. Provisional Application No. 60/500,416, filed Sep. 5, 2003, U.S. Provisional Application No. 60/523,436, filed on Nov. 19, 2003, and U.S. Provisional Application No. 60/565,886, filed on Apr. 27, 2004, each of which is hereby incorporated by reference in its entirety.
- 1. Field of the Invention
- This invention relates to anti-bacterial compounds and methods of using them to treat bacterial infections.
- 2. Description of the Related Art
- Bacterial resistance to drugs drives a continuing need for new anti-bacterial agents that to which the bacteria have not yet developed resistance. DNA gyrase is an enzyme found in many gram-positive and gram-negative bacteria. It is believed that DNA gyrase participates in the unfolding of the DNA double helix that takes before DNA replication by catalyzing ATP-dependent negative super-coiling of the DNA. DNA gyrase is believed to contain a complex of dimeric subunits, called gyrases A and B, that form an A2B2 active enzyme complex. It is further believed that the A2 subunit carries out DNA binding, cleavage, and rejoining, while the B2 subunit mediates ATPase activity.
- Anti-bacterial agents that target the A subunit, such as quinolones, now face growing resistance among clinically important bacterial pathogens. Attempts to inhibit the B, subunit of gyrase instead have not been entirely successful. Agents that inhibit catalysis of ATP hydrolysis by the B subunit (e.g., coumarins, such as novobiocin, and the cyclothialidines) were found to have low antimicrobial activities and unfavorable toxicity profiles (not related to the mechanism of action). U.S. Pat. Nos. 6,608,087 and 6,632,809, both of which are hereby incorporated by reference, describe other gyrase inhibitors. U.S. Pat. Nos. 5,140,034; 5,208,248 and 6,555,539, each of which is incorporated by reference in its entirety, disclose thiazolyl indazoles and their use as therapeutic agents, but these compounds are not known to be useful for inhibiting the B subunit of gyrase.
- A need therefore exists for new anti-bacterial compounds, and particularly those that target the B subunit of bacterial DNA gyrase while overcoming the drawbacks of the existing inhibitors.
- The present invention provides compounds comprising an indazolyl group and a thiazolyl group, preferably 7-substituted 3-(thiazol-2-yl)-1H-indazole compounds in which the indazolyl group and the thiazolyl group are each independently optionally substituted. In preferred embodiments, the compounds are useful for the treatment or prophylaxis of bacterial infections in mammals.
-
-
- wherein R7 is selected from the group consisting of C1-C6 hydrocarbon, lower alkoxy, lower thioalkoxy, CN, NO2, halogen, CF3, and OCF3; and wherein the C1-C6 hydrocarbon, indazolyl group, and thiazolyl group are optionally substituted on carbon; or a pharmaceutically acceptable salt, ester, solvate or prodrug thereof. Preferably, the compound of the formula (I) is synthetically produced. A compound of the formula (I) in an isolated, purified form is preferred.
- Another embodiment provides a composition comprising the compound of claim 1 and a pharmaceutically acceptable carrier.
- Another preferred embodiment provides method of treating or preventing a bacterial infection in a mammal, comprising administering to the mammal an effective amount of a compound of the formula (I) or composition thereof.
-
-
- wherein R7 is selected from the group consisting of C1-C6 hydrocarbon, lower alkoxy, lower thioalkoxy, CN, NO2, halogen, CF3, and OCF3; wherein the C1-C6 hydrocarbon is optionally substituted; and wherein LG represents a leaving group; with a cyanide salt to form an optionally substituted indazole nitrile represented by the formula
- wherein R7 is selected from the group consisting of C1-C6 hydrocarbon, lower alkoxy, lower thioalkoxy, CN, NO2, halogen, CF3, and OCF3; wherein the C1-C6 hydrocarbon is optionally substituted; and wherein LG represents a leaving group; with a cyanide salt to form an optionally substituted indazole nitrile represented by the formula
- These and other embodiments are described in greater detail below.
- Definitions
- Technical terms used herein have the meanings ascribed to them in the McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed., McGraw-Hill, New York, 2003, unless otherwise noted.
- “Hydrocarbon” as used here includes alkyl, cycloalkyl, alkenyl, alkynyl, aryl, and combinations thereof.
- “Alkoxy” or “alkoxyl” refers to hydrocarbon groups attached to the parent structure through an oxygen atom. “Lower alkoxy” refers to groups containing one to four carbon atoms.
- “Aryl” refers to monocyclic 5- or 6-membered, bicyclic 9- or 10-membered, and tricyclic 13- or 14-membered aromatic carbocyclic rings, optionally bearing one or more substituents. Non-limiting examples of such rings include benzene, naphthalene, indane, tetralin, and fluorene, and of suitable substituents include halogen, —R1, —OR1, —OH, —SH, —SR1, protected OH (such as acyloxy), optionally substituted phenyl (Ph), optionally substituted heterocycles, —NO2, —CN, optionally substituted amino groups, optionally substituted carboxamido groups, —NHCONHR1, —NHCONR1R2, —NR1COR2, —NHCO2R1, —CO2R1, CO2H, COR1, CONHR1, —CONR1R2, —S(O)2R1, —SONH2—S(O)R1, —SO2NHR1, and —NHSO2R1, where R1 and R2 are optionally substituted aliphatic groups.
- “Heteroaryl” refers to aryl groups containing up to three N, O, and/or S heteroatoms. Non-limiting examples include imidazole, pyridine, indole, thiophene, benzopyranone, thiazole, thiadiazole, furan, benzimidazole, quinoline, isoquinoline, quinoxaline, pyrimidine, pyrazine, tetrazole and pyrazole.
- “Heterocycle” refers to a cycloalkyl or aryl group in which from one to three carbon atoms is replaced by N, O and/or S heteroatoms. The nitrogen and sulfur heteroatoms may optionally be oxidized, and the nitrogen heteroatom may optionally be quaternized or substituted with substituents such as R1, COR1, SO2R1, and CO2R1, where R1 is an optionally substituted aliphatic group. In addition to the heteroaryl groups listed above, examples of heterocycles include piperidine, morpholine, thiomorpholine, piperazine, pyrrolidine, pyrrole, pyridazine, oxazole, oxadiazole, oxazoline, isoxazole, dioxane, tetrahydrofuran; and phenothiazine.
- “Substituted” in reference to, e.g., an alkyl or other group refers to replacement of H atoms in that group with one or more of the following: lower alkyl; allyl; halogen; haloalkyl; hydroxy, lower alkoxy; hydroxy lower alkyl; carboxy; carboalkoxy (also referred to as alkoxycarbonyl); carboxyalkoxy; carboxamido (also referred to as alkylaminocarbonyl); cyano; formyl; acyl; nitro; amino; alkylamino; dialkylamino; anilino; mercapto; alkylthio; sulfoxide; sulfone; acylamino; amidino; phenyl; benzyl; heteroaryl; heterocycle; phenoxy; benzoyl; benzoyl substituted with amino, hydroxy, methoxy, methyl or halo; benzyloxy and heteroaryloxy. When the group that is substituted contains an alkyl segment, two hydrogen atoms on the same carbon atom may be replaced by oxo (═O). A substitutable nitrogen atom on a heterocyclic ring may be optionally substituted with substituents such as R1, COR1, SO2R1, and CO2R1, where R1 is an aliphatic group or a substituted aliphatic group.
- “Synthetically produced” means produced in a laboratory or manufacturing process, as opposed to produced in vivo through a naturally-occurring process.
- “Aliphatic” as used here means straight chained, branched or cyclic C1-C12 hydrocarbons whether saturated or unsaturated. Non limiting examples of aliphatic groups include substituted or unsubstituted linear, branched or cyclic alkyl, alkenyl, alkynyl groups and hybrids thereof such as (cycloalkyl)alkyl, (cycloalkenyl)alkyl or (cycloalkyl)alkenyl.
- “Pharmaceutically acceptable salt” as used herein refers to salts that are, within the scope of sound medical judgement, suitable for use in contact with the tissues of humans and lower animals without undue toxicity, irritation, allergic response and the like, and are commensurate with a reasonable benefit/risk ratio. Pharmaceutically acceptable salts are well known in the art. For example, S. M. Berge, et al. describe pharmaceutically acceptable salts in detail in J. Pharmaceutical Sciences, 1977, 66: 1-19. The salts can be prepared in situ during the final isolation and purification of compounds of the formula (I) as described below, or separately by reaction of the free base with a suitable organic acid. Representative, acid addition salts include acetate, adipate, alginate, ascorbate, aspartate, benzenesulfonate, benzoate, bisulfate, borate, butyrate, camphorate, camphersulfonate, citrate, cyclopentanepropionate, digluconate, dodecylsulfate, ethanesulfonate, fumarate, glucoheptonate, glycerophosphate, hemisulfate, heptonate, hexanoate, hydrobromide, hydrochloride, hydroiodide, 2-hydroxy-ethanesulfonate, lactobionate, lactate, laurate, lauryl sulfate, malate, maleate, malonate, methanesulfonate, 2-naphthalenesulfonate, nicotinate, nitrate, oleate, oxalate, palmitate, palmoate, pectinate, persulfate, 3-phenylpropionate, phosphate, picrate, pivalate, propionate, stearate, succinate, sulfate, tartrate, thiocyanate, toluenesulfonate, undecanoate, valerate salts, and the like. Representative alkali or alkaline earth metal salts include sodium, lithium, potassium, calcium, magnesium, and the like, as well as nontoxic ammonium, quaternary ammonium, and amine cations, including, but not limited to ammonium, tetramethylammonium, tetraethylammonium, methylamine, dimethylamine, trimethylamine, triethylamine, ethylamine, and the like.
- “Pharmaceutically acceptable ester” as used herein refers to esters that hydrolyze in vivo and include those that break down readily in the human body to leave the parent compound or a salt thereof. Suitable ester groups include, for example, those derived from pharmaceutically acceptable aliphatic carboxylic acids, particularly alkanoic, alkenoic, cycloalkanoic and alkanedioic acids, in which each alkyl or alkenyl moiety advantageously has not more than 6 carbon atoms. Examples of particular esters include formates, acetates, propionates, butyrates, acrylates and ethylsuccinates.
- “Pharmaceutically acceptable solvate” as used herein refers to an aggregate that comprises one or more molecules of the solute, such as a formula (I) compound, with one or more molecules of a solvent. When the solvent is water, the resulting solvate may be referred to as a “hydrate.”
- “Pharmaceutically acceptable carrier” as used herein refers to a non-toxic carrier that may be administered to a patient, together with a compound of this invention, and that does not adversely affect the pharmacological activity of the compound.
- “Prodrug” as used herein refers compounds that are transformed in vivo to yield a compound of the formula (1) below, or a salt or metabolite thereof. The transformation may occur by various mechanisms, such as through hydrolysis in blood. A discussion of the use of prodrugs is provided by T. Higuchi and W. Stella, “Pro-drugs as Novel Delivery Systems,” Vol. 14 of the A.C.S. Symposium Series, and in Bioreversible Carriers in Drug Design, ed. Edward B. Roche, American Pharmaceutical Association and Pergamon Press, 1987.
- For example, if a compound of the formula (I) contains a carboxylic acid functional group, a prodrug can comprise an ester formed by the replacement of the hydrogen atom of the acid group with a group such as (C1-C8)alkyl, (C2-C12)alkanoyloxymethyl, 1-(alkanoyloxy)ethyl having from 4 to 9 carbon atoms, 1-methyl-1-(alkanoyloxy)-ethyl having from 5 to 10 carbon atoms, alkoxycarbonyloxymethyl having from 3 to 6 carbon atoms, 1-(alkoxycarbonyloxy)ethyl having from 4 to 7 carbon atoms, 1-methyl-1-(alkoxycarbonyloxy)ethyl having from 5 to 8 carbon atoms, N-(alkoxycarbonyl)aminomethyl having from 3 to 9 carbon atoms, 1-(N-(alkoxycarbonyl)amino)ethyl having from 4 to 10 carbon atoms, 3-phthalidyl, 4-crotonolactonyl, gamma-butyrolacton-4-yl, di-N,N-C1-C2)alkylamino(C2-C3)alkyl (such as b-dimethylaminoethyl), carbamoyl-(C1-C2)alkyl, N,N-di(C1-C2)alkylcarbamoyl-(C1-C2)alkyl and piperidino-, pyrrolidino- or morpholino(C2-C3)alkyl.
- Similarly, if a compound of the formula (I) comprises an alcohol functional group, a prodrug can be formed by the replacement of the hydrogen atom of the alcohol group with a group such as (C1-C6)alkanoyloxymethyl, 1-((C1-C6)alkanoyloxy)ethyl, 1-methyl-1-((C1-C6)alkanoyloxy)ethyl, (C1-C6)alkoxycarbonyloxymethyl, N-C1-C6)alkoxycarbonylaminomethyl, succinoyl, (C1-C6)alkanoyl, α-amino(C1-C4)alkanoyl, arylacyl and α-aminoacyl, or α-aminoacyl-α-aminoacyl, where each α-aminoacyl group is independently selected from the naturally-occurring L-amino acids, P(O)(OH)2, —P(O)(O(C1-C6)alkyl)2 or glycosyl (the radical resulting from the removal of a hydroxyl group of the hemiacetal form of a carbohydrate).
- If a compound of the formula (I) comprises an amine functional group, a prodrug can be formed by the replacement of a hydrogen atom in the amine group with a group such as R-carbonyl, RO-carbonyl, NRR′-carbonyl where R and R′ are each independently ((C1-C10)alkyl, (C3-C7)cycloalkyl, benzyl, or R-carbonyl is a natural α-aminoacyl or natural α-aminoacyl-natural α-aminoacyl, —C(OH)C(O)OY wherein (Y is H, (C1-C6)alkyl or benzyl), —C(OY0)Y1 wherein Y0 is (C1-C4) alkyl and Y1 is ((C1-C6)alkyl, carboxy(C1-C6)alkyl, amino(C1-C4)alkyl or mono-N— or di-N,N—(C1-C6)alkylaminoalkyl, —C(Y2)Y3 wherein Y2 is H or methyl and Y3 is mono-N— or di-N,N—(C1-C6)alkylamino, morpholino, piperidin-1-yl or pyrrolidin-1-yl.
- Compounds and Compositions
- A preferred embodiment provides compounds of the formula (I) comprising an indazolyl group and a thiazolyl group:
-
- (I)
- (I)
- In formula (I), R7 is preferably selected from the group consisting of C1-C6 hydrocarbon, lower alkoxy, lower thioalkoxy, CN, NO2, halogen, CF3, and OCF3. More preferably, R7 is selected from the group consisting of methyl, ethyl, propyl, allyl, F, Cl, and Br. The C1-C6 hydrocarbon, indazolyl group, and thiazolyl group are optionally substituted, preferably substituted on carbon. The indazolyl group preferably bears at least one substituent selected from the group consisting of optionally substituted C1-C6 hydrocarbon (e.g., methyl, ethyl, propyl, allyl, methylcyclopropyl), lower alkoxy, optionally substituted heterocycle, CN, NO2, halogen (e.g., F, Cl, Br, I), CF3 and OCF3. Preferably, the substituent is attached to a carbon atom of the indazolyl group rather than a nitrogen atom.
- The thiazolyl group preferably bears at least one substituent selected from the group consisting of optionally substituted C1-C10 hydrocarbon (e.g., methyl, ethyl), optionally substituted C1-C10 heterocycle, optionally substituted carboxamido, optionally substituted aminocarboxy, optionally substituted C1-C6 alkoxy, optionally substituted C1-C6 alkoxycarbonyl (e.g., COOCH3, COOCH2CH3), OH, COOH, COOR3, and CONR8R9; wherein R3 is selected from the group consisting of optionally substituted heterocycle and C1-C6 alkyl substituted by heterocycle; wherein R8 and R9 are independently selected from the group consisting of H, optionally substituted heterocycle, and optionally substituted C1-C6 hydrocarbon, wherein R8 and R9 may together form a four-, five-, or six-membered optionally substituted heterocyclic ring including the N atom to which R8 and R9 are attached, and wherein for said ring one to three carbon atoms may optionally each independently be replaced by an atom selected from the group consisting of N, O, and S. Examples of substituents thus include methyl, ethyl, OH, phenyl, COOH, COOCH3, COOCH2CH3, and N(CH3)(CH2CH3). In preferred embodiments, the thiazolyl group is attached to a carbonyl carbon of at least one substituent represented by a structure selected from the group consisting of
- For compounds of the formula (I) in which the thiazolyl group bears a phenyl substituent, the phenyl is optionally substituted with at least one substituent selected from the group consisting of OH, OCH3, F, Cl, Br, optionally substituted piperazin-1-yl, and optionally substituted morpholin-4-yl. Examples of phenyl groups include 3-hydroxyphenyl, 4-hydroxyphenyl, 3-methoxyphenyl, 3-fluorophenyl, 4-fluorophenyl, 4-fluoro-3-hydroxyphenyl, 3,4-difluoro-phenyl, 3,5-difluoro-phenyl, 4-bromo-3-methoxy-phenyl, 4-(4-methyl-piperazin-1-yl)-phenyl, and 4-(morpholin-4-yl)-phenyl. For compounds of the formula (1) in which the thiazolyl group bears a pyridyl substituent, the pyridyl is optionally substituted with at least one substituent selected from the group consisting of C1-C6 alkyl, F, Cl, Br, I, CF3, 3,5-dimethyl-piperazin-1-yl, and morpholin-4-yl. Examples of pyridyl groups include pyridin-3-yl, 6-methyl-pyridin-3-yl, 6-chloro-pyridin-3-yl, and 6-trifluoromethyl-pyridin-3-yl
- It is apparent from the foregoing that the thiazolyl group may optionally bear two substituents. Preferably, each of the two substituents on the thiazolyl group is independently selected from the group consisting of optionally substituted C1-C10 hydrocarbon, COOH, optionally substituted C1-C6 alkoxycarbonyl, OH, COOR3, and CONR8R9, wherein R3 is selected from the group consisting of optionally substituted heterocycle and C1-C6 alkyl substituted by heterocycle; wherein R8 and R9 are independently selected from the group consisting of H, optionally substituted heterocycle, and optionally substituted C1-C6 hydrocarbon, wherein R8 and R9 may together form a four-, five-, or six-membered optionally substituted heterocyclic ring including the N atom to which R and R′ are attached, and wherein for said ring one to three carbon atoms may optionally each independently be replaced by an atom selected from the group consisting of N, O, and S.
- Those skilled in the art will recognize that certain compounds of the formula (I) may exist in tautomeric forms, all such forms of the compounds being within the scope of the invention. Unless otherwise stated, structures depicted herein also encompass all stereochemical forms of the structure, including the R and S configurations for each asymmetric center. Therefore, single stereochemical isomers as well as enantiomeric and diastereomeric mixtures of the present compounds are within the scope of the invention. Preferred compounds of the formula (I) are synthetically produced to provide an isolated, substantially pure form according to the synthetic methods described below.
- Those skilled in the art will understand that the in vivo effects resulting from administration of the compounds of the formula (I) may result not from the compounds themselves, but instead by one or more products of degradation, such as by a metabolic process. Thus, those skilled in the art will understand that reference herein to a compound of the formula (1) includes pharmacologically acceptable esters, amides, salts (e.g., metal salts), hydrates, and other derivatives thereof (known in the art as “pro-drugs”) that undergo biotransformation to yield the active drug. Pro-drugs are described generally in, e.g., Goodman and Gilman's “Biotransformation of Drugs,” in the Pharmacological Basis of Therapeutics, 8th Ed., McGraw Hill, Int. Ed. 1992, pages 13-15, which is hereby incorporated by reference in its entirety. Particularly favored derivatives or prodrugs are those that increase the bioavailability of the compounds of the formula (I) when such compounds are administered to a mammal (e.g., by allowing an orally administered compound to be more readily absorbed into the blood) or that enhance delivery of the parent compound to a biological compartment (e.g., the brain or lymphatic system) relative to the parent species.
- A preferred embodiment provides compositions comprising a compound of the formula (I) and a pharmaceutically acceptable carrier. Pharmaceutically acceptable carriers useful in these compositions include, but are not limited to, ion exchangers, alumina, aluminum stearate, lecithin, serum proteins, such as human serum albumin, buffer substances such as phosphates, glycine, sorbic acid, potassium sorbate, partial glyceride mixtures of saturated vegetable fatty acids, water, salts or electrolytes, such as protamine sulfate, disodium hydrogen phosphate, potassium hydrogen phosphate, sodium chloride, zinc salts, colloidal silica, magnesium trisilicate, polyvinyl pyrrolidone, cellulose-based substances, polyethylene glycol, sodium carboxymethylcellulose, polyacrylates, waxes, polyethylene-polyoxypropylene-block polymers, wool fat and self-emulsifying drug delivery systems (SEDDS) such as a-tocopherol, polyethyleneglycol 1000 succinate, or other similar polymeric delivery matrices.
- Certain compounds of the formula (I) possess an acidic or basic group, and may therefore form salts with pharmaceutically-acceptable cations or anions. All such pharmaceutically-acceptable salts are contemplated in the present invention. The identities of pharmaceutically-acceptable cations and anions are well-known in the art, and appear in such compendia as the Physicians' Desk Reference, 56th ed., Medical Economics Company, Inc., Montvale, N.J., 2002. The compounds may also form hydrates or exist in a substantially anhydrous form.
- Pharmaceutical compositions for parenteral administration, such as by injection intravenously, preferably contain a pharmaceutically acceptable amount of a compound of the formula (I) as a soluble salt dissolved in a pharmaceutically acceptable liquid carrier such as, for example, water-for-injection and a buffer to provide a suitably buffered isotonic solution having, for example, a pH of about 3.5-6. Suitable buffering agents include, for example, trisodium orthophosphate, sodium bicarbonate, sodium citrate, N-methylglucamine, L(+)-lysine and L(+)-arginine. The compounds of the formula (1) generally will be dissolved in the carrier in an amount sufficient to provide a pharmaceutically acceptable injectable concentration in the range of about 1 mg/mL to about 400 mg/mL of solution. The resulting liquid pharmaceutical composition will be so administered as to obtain a dosage effective against bacteria.
- Nonlimiting examples of preferred compounds of the formula (I) include:
- 1-[2-(5,7-dimethyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-2-(1-methyl-piperidin-4-yl)-ethanone;
- [2-(5,7-Dimethyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-(4-methyl-piperazin-1-yl)-methanone;
- (3-dimethylamino-pyrrolidin-1-yl)-[2-(6-fluoro-7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-methanone;
- (3-dimethylamino-pyrrolidin-1-yl)-[2-(6-fluoro-7-methyl-1H-indazol-3-yl)-5-(6-methyl-pyridin-3-yl)-thiazol-4-yl]-methanone;
- (3-dimethylamino-pyrrolidin-1-yl)-[2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-methanone;
- (3-dimethylamino-pyrrolidin-1-yl)-[2-(7-methyl-1H-indazol-3-yl)-5-(6-methyl-pyridin-3-yl)-thiazol-4-yl]-methanone;
- (3,5-dimethyl-piperidin-1-yl)-[2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-methanone;
- (3-dimethylamino-pyrrolidin-1-yl)-[2-(7-methyl-1H-indazol-3-yl)-5-(6-trifluoromethyl-pyridin-3-yl)-thiazol-4-yl]-methanone;
- (3-dimethylamino-pyrrolidin-1-yl)-[2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-methanone;
- (3-dimethylamino-pyrrolidin-1-yl)-[5-(3-methoxy-phenyl)-2-(7-methyl-1H-indazol-3-yl)-thiazol-4-yl]-methanone;
- (3-dimethylamino-pyrrolidin-1-yl)-[5-(4-hydroxy-phenyl)-2-(7-methyl-1H-indazol-3-yl)-thiazol-4-yl]-methanone;
- (3-hydroxy-azetidin-1-yl)-[2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-methanone;
- (3-hydroxy-pyrrolidin-1-yl)-[2-(7-methyl-1H-indazol-3-yl)-5-(6-morpholin-4-yl-pyridin-3-yl)-thiazol-4-yl]-methanone;
- (3-hydroxy-pyrrolidin-1-yl)-[2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-methanone;
- [2-(6-chloro-7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-(4-methyl-piperazin-1-yl)-methanone;
- [2-(6-chloro-7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-(3-hydroxy-pyrrolidin-1-yl)-methanone;
- [2-(6-chloro-7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-(3-dimethylamino-pyrrolidin-1-yl)-methanone;
- [2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl)-(4-methyl-piperazin-1-yl)-methanone;
- [2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-(4-pyridin-4-yl-piperazin-1-yl]-methanone;
- [2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl)-morpholin-4-yl-methanone;
- [2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-piperidin-1-yl-methanone;
- [5-(3,4-difluoro-phenyl)-2-(7-methyl-1H-indazol-3-yl)-thiazol-4-yl]-(3-dimethylamino-pyrrolidin-1-yl)-methanone;
- [5-(3,4-difluoro-phenyl)-2-(7-methyl-1H-indazol-3-yl)-thiazol-4-yl]-(3-hydroxy-pyrrolidin-1-yl)-methanone;
- [5-(3,4-difluoro-phenyl)-2-(7-methyl-1H-indazol-3-yl)-thiazol-4-yl]-(4-methyl-piperazin-1-yl)-methanone;
- [5-(3,5-difluoro-phenyl)-2-(7-methyl-1H-indazol-3-yl)-thiazol-4-yl]-(3-hydroxy-pyrrolidin-1-yl)-methanone;
- [5-(3,5-difluoro-phenyl)-2-(7-methyl-1H-indazol-3-yl)-thiazol-4-yl]-(4-methyl-piperazin-1-yl)-methanone;
- [5-(3-fluoro-phenyl)-2-(7-methyl- H-indazol-3-yl)-thiazol-4-yl]-(4-methyl-piperazin-1-yl)-methanone;
- [5-(4-fluoro-3-hydroxy-phenyl)-2-(7-methyl-1H-indazol-3-yl)-thiazol-4-yl]-(4-methyl-piperazin-1-yl)-methanone;
- [5-(4-fluoro-phenyl)-2-(7-methyl-1H-indazol-3-yl)-thiazol-4-yl]-(3-hydroxy-pyrrolidin-1-yl)-methanone;
- [5-(4-fluoro-phenyl)-2-(7-methyl-1H-indazol-3-yl)-thiazol-4-yl]-(4-methyl-piperazin-1-yl)-methanone;
- [5-(6-chloro-pyridin-3-yl)-2-(7-methyl-1H-indazol-3-yl)-thiazol-4-yl]-(3-dimethylamino-pyrrolidin-1-yl)-methanone;
- [5-(6-chloro-pyridin-3-yl)-2-(7-methyl-1H-indazol-3-yl)-thiazol-4-yl]-(3-hydroxy-pyrrolidin-1-yl)-methanone;
- [5-[6-(3,5-dimethyl-piperazin-1-yl)-pyridin-3-yl]-2-(7-methyl-1H-indazol-3-yl)-thiazol-4-yl]-(3-hydroxy-pyrrolidin-1-yl)-methanone;
- {4-[2-(1H-indazol-3-yl)-thiazol-4-yl]-phenyl}-(4-methyl-piperazin-1-yl)-methanone;
- {4-[2-(1H-indazol-3-yl)-thiazol-4-yl]-phenyl}-morpholin-4-yl-methanone;
- 1-[2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carbonyl]-piperidine-4-carboxylic acid;
- 2-(1H-indazol-3-yl)-4-phenyl-thiazole-5-carboxylic acid ethyl ester;
- 2-(1H-indazol-3-yl)-5-phenyl-thiazol-4-ol;
- 2-(1H-indazol-3-yl)-5-phenyl-thiazole-4-carboxylic acid (2,3-dihydroxy-propyl)-amide;
- 2-(1H-indazol-3-yl)-5-phenyl-thiazole-4-carboxylic acid (2-dimethyl-amino-ethyl)-amide;
- 2-(1H-indazol-3-yl)-5-phenyl-thiazole-4-carboxylic acid (2-methoxy-ethyl)-amide;
- 2-(1H-indazol-3-yl)-5-phenyl-thiazole-4-carboxylic acid cyclopropylmethyl-amide;
- 2-(1H-indazol-3-yl)-5-phenyl-thiazole-4-carboxylic acid methyl ester;
- 2-(4-chloro-7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid methyl ester;
- 2-(6-chloro-7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid methyl ester;
- 2-(7-ethyl-1H-indazol-3-yl)-5-phenyl-thiazole-4-carboxylic acid methyl ester;
- 2-(7-methyl-1H-indazol-3-yl)-5-(6-trifluoromethyl-pyridin-3-yl)-thiazole-4-carboxylic acid methyl ester;
- 2-(7-methyl-1H-indazol-3-yl)-5-phenyl-thiazole-4-carboxylic acid 2-morpholin-4-yl-ethyl ester;
- 2-(7-methyl-1H-indazol-3-yl)-5-phenyl-thiazole-4-carboxylic acid methyl ester;
- 2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid ethyl-methyl-amide;
- 2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid 1-methyl-piperidin-4-yl ester;
- 2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid 1-methyl-pyrrolidin-3-yl ester;
- 2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid (2-dimethylamino-ethyl)-methyl-amide;
- 2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid (1-methyl-piperidin-4-yl)-amide;
- 2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid;
- 2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid (2-diethylmino-ethyl)-amide;
- 2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid methyl ester;
- 2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid ethyl ester;
- 2-[2-(1H-indazol-3-yl)-thiazol-4-yl]-phenol;
- 2-bromo-5-[2-(1H-indazol-3-yl)-4-methyl-thiazol-5-yl]-phenol;
- 2-hydroxy-5-[2-(1H-indazol-3-yl)-5-methyl-thiazol-4-yl]-benzoic acid;
- 3-(4,5-diphenyl-thiazol-2-yl)-1H-indazole;
- 3-(4-ethyl-5-phenyl-thiazol-2-yl)-1H-indazole;
- 3-(4-ethyl-thiazol-2-yl)-1H-indazole;
- 3-(4-naphthalen-2-yl-thiazol-2-yl)-1H-indazole;
- 3-(4-phenyl-thiazol-2-yl)-1H-indazole;
- 3-(4-p-tolyl-thiazol-2-yl)-1H-indazole;
- 3-(4-pyridin-2-yl-thiazol-2-yl)-1H-indazole;
- 3-(4-pyridin-3-yl-thiazol-2-yl)-1H-indazole;
- 3-(5-methyl-4-phenyl-thiazol-2-yl)-1H-indazole;
- 3-(5-phenyl-thiazol-2-yl)-1H-indazole;
- 3-(5-phenyl-thiazol-2-yl)-1H-indazole;
- 3-[2-(1H-indazol-3-yl)-4-methyl-thiazol-5-yl]-phenol;
- 3-[2-(1H-indazol-3-yl)-4-methyl-thiazol-5-yl]-phenol;
- 3-[2-(1H-indazol-3-yl)-thiazol-4-yl]-benzoic acid;
- 3-[2-(7-chloro-1H-indazol-3-yl)-4-methyl-thiazol-5-yl]-phenol;
- 3-[4-(2,5-dimethyl-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[4-(2-fluoro-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[4-(2-methoxy-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[4-(3,4-dichloro-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[4-(3,4-difluoro-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[4-(3-bromo-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[4-(3-fluoro-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[4-(3-methoxy-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[4-(4-chloro-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[4-(4-methanesulfonyl-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[4-(4-methoxy-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[4-(4-morpholin-4-yl-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[4-(4-pyrrolidin-1-yl-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[4-methyl-5-(4-morpholin-4-yl-phenyl)-thiazol-2-yl]-1H-indazole;
- 3-[5-(3-methoxy-phenyl)-4-methyl-thiazol-2-yl]-1H-indazole;
- 3-[5-(3-methoxy-phenyl)-4-methyl-thiazol-2-yl-1H-indazole;
- 3-[5-(4-bromo-3-methoxy-phenyl)-4-methyl-thiazol-2-yl]-1H-indazole;
- 3-[5-(6-chloro-pyridin-3-yl)-4-methyl-thiazol-2-yl]-1H-indazole;
- 3-{4-methyl-5-[4-(4-methyl-piperazin-1-yl)-phenyl]-thiazol-2-yl}-1H-indazole;
- 4-[2-(1H-indazol-3-yl)-thiazol-4-yl]-benzoic acid methyl ester;
- 4-[2-(1H-indazol-3-yl)-thiazol-4-yl]-benzoic acid;
- 4-[2-(1H-indazol-3-yl)-thiazol-4-yl]-benzonitrile;
- 5-(3-fluoro-phenyl)-2-(7-methyl-1H-indazol-3-yl)-thiazole-4-carboxylic acid methyl ester;
- 5-(4-fluoro-phenyl)-2-(7-methyl-1H-indazol-3-yl)-thiazole-4-carboxylic acid ethyl ester;
- 5-(4-hydroxy-phenyl)-2-(7-methyl-1H-indazol-3-yl)-thiazole-4-carboxylic acid methyl ester;
- 5-(6-chloro-pyridin-3-yl)-2-(7-methyl-1H-indazol-3-yl)-thiazole-4-carboxylic acid methyl ester;
- 7-chloro-3-[5-(3-methoxy-benzyl)-thiazol-2-yl]-1H-indazole;
- 7-chloro-3-[5-(3-methoxy-phenyl)-4-methyl-thiazol-2-yl]-1H-indazole;
- diethyl-{4-[2-(1H-indazol-3-yl)-thiazol-4-yl]-phenyl}-amine;
- N-(2-dimethylamino-ethyl)-3-[2-(1H-indazol-3-yl)-thiazol-4-yl]-benzamide.
Methods of Making Compounds and Compositions - Compounds of the formula (I) are preferably prepared according to the following synthetic scheme:
- Acetylation
-
- R7 is preferably selected from the group consisting of C1-C6 hydrocarbon, lower alkoxy, lower thioalkoxy, CN, NO2, halogen, CF3, and OCF3; wherein the C1-C6 hydrocarbon and the aryl ring of the aryl amide are optionally substituted. Acetylation is illustrated by the following: An aryl amine such as aniline (82.5 mmoles) is dissolved in 400 mL of dichloromethane and cooled to 0° C. To this solution is added dropwise acetyl chloride (71 mL, 1 mole) followed by a 200 mL solution of triethyl amine (140 mL, 1 mole). This solution is stirred until reaction is complete. The resulting solid is filtered off and the filtrate poured into brine, extracted twice with dichloromethane, dry filtered and concentrated to give the acetylated amine.
- Cyclization
-
- Cyclization is illustrated by the following: An acetylated amine such as N-(2,6-dimethylphenyl)-acetamide (1 eq) is dissolved in dichloroethane. To this solution is added acetic acid (1.1 eq) followed by the dropwise addition of isoamyl nitrite (1.1 eq). The reaction is then heated to reflux overnight, poured into water and extracted two additional times with dichloromethane. The extracts are combined, washed with saturated bicarbonate, then brine, and dried with magnesium sulfate filter before being concentrated to a solid. Yields typically 80%.
- Iodination
-
- Iodination is illustrated by the following: The optionally substituted indazole represented by the formula (I) (1 eq) is dissolved in DMF (0.5 M) and to this solution is added iodine crystals (3 eq) and KOH pellets (5 eq). This reaction is allowed to stir at RT until complete by thin layer chromatography (TLC), approximately 3 hours. The solution is concentrated to about one third volume, and then poured into a 5% NaHSO3 solution and extracted with ether 3 times. The ether extracts are washed with water followed by saturated brine solution and dried over magnesium sulfate. The drying agent is removed by filtration and the ether solution concentrated to an orange solid to quantitative yields of the 3-iodo-indazole.
-
- For the compound represented by the formula (V), LG represents a leaving group. Preferred leaving groups include chloro, bromo, iodo, trifluoromethanesulfonate, methanesulfonate, p-toluenesulfonate, and trifluoroacetate. Iodo is a highly preferred leaving group.
- Nitrile Displacement
-
- Nitrile displacement is illustrated by the following: The optionally substituted iodinated indazole is dissolved in anhydrous N-methylpyrrolidinone (0.5 M). To this solution is added sodium cyanide (2 equivalents) and copper (I) cyanide (3 equivalents). The solution is heated to 135° C. for 6 hours or until complete by TLC or HPLC. The reaction is then concentrated to 1/3 volume and partitioned between ether and water. The resulting suspension is filtered through diatomaceous earth. The filtrate is separated and extracted with two additional portions of ether. The combined extracts are washed with water and brine, dried over magnesium sulfate, filtered and concentrated to an off white solid. (50% yield).
- Those skilled in the art will understand that iodine is an example of a leaving group, and thus that nitrile displacement may also be carried out in a similar fashion using compounds of the formula (V).
- Thioamide Formation
-
- Thioamide formation is illustrated by the following: The optionally substituted indazole nitrile is dissolved in 20% triethyl amine in pyridine and cooled to 0° C. The solution is then saturated for 10 minutes with hydrogen sulfide gas. The reactor is sealed and allowed to stir while warming to room temperature. After 3 hours, or when the reaction is complete by TLC, it is de-gassed with a light vacuum before being concentrated to a yellow solid. The solid is suspended in hexane and filtered under vacuum. The solid is then dried under high vacuum with P2O5 until dried to a constant weight.
- Cyclization
- Cyclization preferably comprises reacting the optionally substituted indazole thioamide with a carbonyl compound to form a compound of the formula (I). Preferably, the carbonyl compound is substituted with a leaving group in the position alpha to the carbonyl. Preferred carbonyl compounds include optionally substituted α-LG aldehyde, optionally substituted α-LG ketone, and optionally substituted α-LG ester. Cyclization is illustrated in Examples 3-4 below.
- It will be understood by those skilled in the art that additional or alternate chemical reactions or process steps may be employed in addition to or instead of those set forth in the synthetic scheme outlined above. Thus, the knowledge of those skilled in the art may be combined with the teachings provided herein to prepare a wide variety of compounds of the formula (I). For example, Table I provides the names and structures of various preferred compounds of the formula (I) prepared in accordance with the methods described herein.
TABLE 1 No. Name Structure 1. 2-(1H-Indazol-3-yl)-5-phenyl- thiazol-4-ol 2. 3-(4-Pyridin-3-yl-thiazol-2-yl)-1H- indazole 3. 3-(4-Phenyl-thiazol-2-yl)-1H- indazole 4. 3-(5-Phenyl-thiazol-2-yl)-1H- indazole 5. 2-(1H-Indazol-3-yl)-4-phenyl- thiazole-5-carboxylic acid ethyl ester 6. 4-[2-(1H-Indazol-3-yl)-thiazol-4- yl]-benzoic acid 7. 4-[2-(1H-Indazol-3-yl)-thiazol-4- yl]-benzolc acid methyl ester 8. N-(2-Dimethylamino-ethyl)-4-[2- (1H-indazal-3-yl)-thiazol-4-yl]- benzamide 9. 3-[2-(1H-Indazol-3-yl)-thiazol-4- yl]-benzoic acid 10. 3-(5-Methyl-4-phenyl-thiazol-2- yl)-1H-indazole 11. N-(2-Dimethylamino-ethyl)-3-[2- (1H-indazol-3-yl)-thiazol-4-yl]- benzamide 12. {4-[2-(1H-Indazol-3-yl)-thiazol-4- yl]-phenyl}-(4-methyl-piperazin-1- yl)-methanone 13. {4-[2-(1H-Indazol-3-yl)-thiazol-4- yl]-phenyl}-morpholin-4-yl- methanone 14. 3-[5-(3-Methoxy-phenyl)-4- methyl-thiazol-2-yl]-1H-indazole 15. 3-[4-(4-Bromo-phenyl)-5-methyl- thiazol-2-yl]-1H-indazole 16. 3-[5-Methyl-4-(4-morpholin-4-yl- phenyl)-thiazol-2-yl]-1H-indazole 17. 3-[2-(1H-Indazol-3-yl)-4-methyl- thiazol-5-yl]-phenol 18. 3-{5-Methyl-4-[4-(4-methyl- piperazin-1-yl)-phenyl]-thiazol-2- yl}-1H-indazole 19. 2-Hydroxy-5-[2-(1H-indazol-3-yl)- 5-methyl-thiazol-4-yl]-benzoic acid 20. 2-(7-Fluoro-1H-indazol-3-yl)-5- phenyl-thiazol-4-ol 21. 5-[2-(1H-Indazol-3-yl)-5-methyl- thiazol-4-yl]-2-morpholin-4-yl- benzoic acid 22. 5-[2-(1H-Indazol-3-yl)-5-methyl- thiazol-4-yl]-2-morpholin-4-yl- benzoic acid methyl ester 23. 3-[4-(4-Bromo-phenyl)-5-methyl- thiazol-2-yl]-7-fluoro-1H-indazole 24. 7-Fluoro-3-{5-methyl-4-[4-(4- methyl-piperazin-1-yl)-phenyl]- thiazol-2-yl}-1H-indazole 25. 3-[5-(4-Bromo-3-methoxy- phenyl)-4-methyl-thiazol-2-yl]- 1H-indazole 26. 7-Chloro-3-[5-(3-methoxy- phenyl)-4-methyl-thiazol-2-yl]- 1H-indazole 27. 7-Chloro-3-(5-(3-methoxy- benzyl)-thiazol-2-yl]-1H-indazole 28. 3-[2-(7-ChIoro-1H-indazol-3-yl)- 4-methyl-thiazol-5-yl)-phenol 29. [2-(1H-Indazol-3-yl)-4-phenyl- thiazol-5-yl]-methanol 30. 3-[5-(4-Bromo-phenyl)-4-methyl- thiazol-2-yl]-1H-indazole 31. 2-(1H-Indazol-3-yl)-4-phenyl- thiazole-5-carboxylic acid 32. 4-[2-(1H-Indazol-3-yl)-5-methyl- thiazol-4-yl]-2-methoxy-phenol 33. 3-[4-(6-Bromo-pyridin-3-yl)-5- methyl-thiazol-2-yl]-1H-indazole 34. 3-[4-Methyl-5-(4-morpholin-4-yl- phenyl)-thiazol-2-yl]-1H-indazole 35. 3-{4-Methyl-5-[4-(4-methyl- piperazin-1-yl)-phenyl]-thiazol-2- yl}-1H-indazole 36. 3-(5-Methyl-4-(6-morpholin-4-yl- pyridin-3-yl)-thiazol-2-yl]-1H- indazole 37. {4-[2-(1H-Indazol-3-yl)-5-methyl- thiazol-4-yl]-phenyl)-piperazin-1- yl-methanone 38. 3-{5-Methyl-4-[6-(2-morpholin-4- yl-ethoxy)-pyridin-3-yl]-thiazol-2- yl}-1H-indazole 39. 3-(5-Methyl-4-pyridin-3-yl-thiazol- 2-yl)-1H-indazole 40. 3-{4-[6-(3,5-Dimethyl-piperazin- 1-yl)-pyridin-3-yl]-5-methyl- thiazol-2-yl}-1H-indazole 41. 3-{4-[6-(4-Cyclopentyl-piperazin- 1-yl)-pyridin-3-yl]-5-methyl- thiazol-2-yl}-1H-indazole 42. 3-{4-[6-(4-Isopropyl-piperazin-1- yl)-pyridin-3-yl]-5-methyl-thiazol- 2-yl)-1H-indazole 43. (2-{5-[2-(1H-Indazol-3-yl)-5- methyl-thiazol-4-yl]-pyridin-2- yloxy}-ethyl)-dimethyl-amine 44. 3-[5-Methyl-4-(6-piperazin-1-yl- pyridin-3-yl)-thiazol-2-yl]-1H- indazole 45. 1-(4-{5-[2-(1H-Indazol-3-yl)-5- methyl-thiazol-4-yl]-pyridin-2-yl}- piperazin-1-yl)-ethanone 46. 3-(4-Ethyl-5-phenyl-thiazol-2-yl)- 1H-indazole 47. 1-{5-[2-(1H-Indazol-3-yl)-5- methyl-thiazol-4-yl]-pyridin-2-yl}- pyrrolidin-3-ol 48. 3-{5-Methyl-4-[6-(4-methyl- piperazin-1-yl)-pyridin-3-yl]- thiazol-2-yl}-1H-indazole 49. 2-{5-[2-(1H-Indazol-3-yl)-5- methyl-thiazol-4-yl]-pyridin-2- yloxy}-ethanol 50. 3-[5-(6-Chloro-pyridin-3-yl)-4- methyl-thiazol-2-yl]-1H-indazole 51. 3-(4,5-Diphenyl-thiazol-2-yl)-1H- indazole 52. 2-(1H-Indazol-3-yl)-5-phenyl- thiazole-4-carboxylic acid methyl ester 53. 3-Diethylamino-1-(4-{5-[2-(1H- indazol-3-yl)-5-methyl-thiazol-4- yl]-pyridin-2-yl}-piperazin-1-yl)- propan-1-one 54. 3-{4-Methyl-5-[6-(4-methyl- piperazin-1-yl)-pyridin-3-yl]- thiazol-2-yl)-1H-indazole 55. (2-{5-[2-(1H-Indazol-3-yl)-4- methyl-thiazol-5-yl]-pyridin-2- yloxy}-ethyl)-dimethyl-amine 56. 5-(2-Hydroxy-phenyl)-2-(1H- indazol-3-yl)-thiazol-4-ol 57. 2-(1H-Indazol-3-yl)-5-phenyl- thiazole-4-carboxylic acid 58. 3-[5-Methyl-4-(6-piperazin-1-yl- pyridin-3-yl)-thiazol-2-yl]-7- trifluoromethyl-1H-indazole 59. 2-(1H-Indazol-3-yl)-5-phenyl- thiazole-4-carboxylic acid (2- methoxy-ethyl)-amide 60. 2-(1H-Indazol-3-yl)-5-phenyl- thiazole-4-carboxylic acid (2- dimethylamino-ethyl)-amide 61. 2-(1H-Indazol-3-yl)-5-phenyl- thiazole-4-carboxylic acid (2,3- dihydroxy-propyl)-amide 62. 2-(1H-Indazol-3-yl)-5-phenyl- thiazole-4-carboxylic acid cyclopropylmethyl-amide 63. 3-{4-[6-(3,5-Dimethyl-piperazin- 1-yl)-pyridin-3-yl]-5-methyl- thiazol-2-yl}-7-trifiuoromethyl-1H- indazole 64. 2-Dimethylamino-1-(4-{5-(2-(1H- indazol-3-yl)-5-methyl-thiazol-4- yl]-pyridin-2-yl}-piperazin-1-yl)- ethanone 65. 2-Bromo-5-[2-(1H-indazol-3-yl)- 4-methyl-thiazol-5-yl]-phenol 66. 2-(7-Methyl-1H-indazol-3-yl)-5- phenyl-thiazole-4-carboxylic acid methyl ester 67. 2-(7-Chloro-1H-indazol-3-yl)-5- phenyl-thiazole-4-carboxylic acid methyl ester 68. 7-Methyl-3-[5-methyl-4-(6- piperazin-1-yl-pyridin-3-yl)- thiazol-2-I]-1H-indazole 69. 3-{4-[6-(3,5-Dimethyl-piperazin- 1-yl)-pyridin-3-yl]-5-methyl- thiazol-2-yl}-7-methyl-1H- indazole 70. 2-(7-Ethyl-1H-indazol-3-yl)-5- phenyl-thiazole-4-carboxylic acid methyl ester 71. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid ethyl ester 72. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid methyl ester 73. 4-[2-(1H-Indazol-3-yl)-5-methyl- thiazol-4-yl]-N-pyridin-3-yl- benzamide 74. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid (2-diethylamino-ethyl)- amide 75. 2-(7-Methyl-1H-indazol-3-yl)-5- phenyl-thiazole-4-carboxylic acid 2-morpholin-4-yl-ethyl ester 76. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid 77. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid (1-methyl-piperidin-4-yl)- amide 78. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid (2-dimethylamino-ethyl)- methyl-amide 79. [2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(4- pyridin-4-yl-piperazin-1-yl)- methanone 80. (3-Dimethylamino-pyrrolidin-1- yl)-[2-(7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazol-4-yl]- methanone 81. (3-Dimethylamino-pyrrolidin-1- yl)-[2-(7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazol-4-yl]- methanone 82. [2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(4- methyl-piperazin-1-yl)- methanone 83. 5-(6-Chloro-pyridin-3-yl)-2-(7- methyl-1H-indazol-3-yl)-thiazole- 4-carboxylic acid methyl ester 84. (3-Hydroxy-pyrroiidin-1-yl)-[2-(7- methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 85. 2-(7-Methyl-1H-indazol-3-yl)-5- (6-trifluoromethyl-pyridin-3-yl)- thiazole-4-carboxylic acid methyl ester 86. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridln-3-yl-thlazole-4-carboxylic acid 1-methyl-pyrrolidin-3-yl ester 87. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid 1-methyl-piperidin-4-yl ester 88. (3,5-Dimethyl-piperazin-1-yl)-[2- (7-methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 89. [5-(6-Chloro-pyridin-3-yl)-2-(7- methyl-1H-indazol-3-yl)-thiazol- 4-yl]-(3-hydroxy-pyrrolidin-1-yl)- methanone 90. (3-Hydroxy-pyrrolidin-1-yl)-[2-(7- methyl-1H-indazol-3-yl)-5-(6- morpholin-4-yl-pyridin-3-yl)- thiazol-4-yl]-methanone 91. [5-[6-(3,5-Dimethyl-piperazin-1- yl)-pyridin-3-yl]-2-(7-methyl-1H- indazol-3-yl)-thiazol-4-yl]-(3- hydroxy-pyrrolidin-1-yl)- methanone 92. (3-Dimethylamino-pyrrolidin-1- yl)-[2-(7-methyl-1H-indazol-3-yl)- 5-(6-trifluoromethyl-pyridin-3-yl)- thiazol-4-yl]-methanane 93. [5-(6-Chloro-pyridin-3-yl)-2-(7- methyl-1H-indazol-3-yl)-thiazol- 4-yl]-(3-dimethylamino-pyrrolidin- 1-yl)-methanone 94. [2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-piperidin- 1-yl-methanone 95. (3,5-Dimethyl-piperidin-1-yl)-[2- (7-methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 96. [2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- morpholin-4-yl-methanone 97. (3-Dimethylamino-pyrrolidin-1- yl)-[5-(3-methoxy-phenyl)-2-(7- methyl-1H-indazol-3-yl)-thiazol- 4-yl]-methanone 98. 2-(6-Chloro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid methyl ester 99. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(3-dimethylamino- pyrrolidin-1-yl)-methanone 100. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(3-hydroxy- pyrrolidin-1-yl)-methanone 101. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(4-methyl-piperazin- 1-yl)-methanone 102. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid ethyl-methyl-amide 103. 5-(4-Fluoro-phenyl)-2-(7-methyl- 1H-indazol-3-yl)-thiazole-4- carboxylic acid methyl ester 104. 5-(4-Hydroxy-phenyl)-2-(7- methyl-1H-indazol-3-yl)-thiazole- 4-carboxylic acid methyl ester 105. 2-(4-Chloro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid methyl ester 106. [5-(4-Fluoro-phenyl)-2-(7-methyl- 1H-indazol-3-yl)-thiazol-4-yl]-(4- methyl-piperazin-1-yl)- methanone 107. [5-(4-Fluoro-phenyl)-2-(7-methyl- 1H-indazol-3-yl)-thiazol-4-yl]-(3- hydroxy-pyrrolidin-1-yl)- methanone 108. 5-(3-Fluoro-phenyl)-2-(7-methyl- 1H-indazol-3-yl)-thiazole-4- carboxylic acid methyl ester 109. [5-(3,5-Difluoro-phenyl)-2-(7- methyl-1H-indazol-3-yl)-thiazol- 4-yl]-(4-methyl-piperazin-1-yl)- methanone 110. [5-(3,5-Difluoro-phenyl)-2-(7- methyl-1H-indazol-3-yl)-thiazol- 4-yl]-(3-hydroxy-pyrrolidin-1-yl)- methanone 111. (3-Hydroxy-azetidin-1-yl)-[2-(7- methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 112. [5-(3-Fluoro-phenyl)-2-(7-methyl- 1H-indazol-3-yl)-thiazol-4-yl]-(4- methyl-piperazin-1-yl)- methanone 113. (3-Dimethylamino-pyrrolidin-1- yl)-[5-(4-hydroxy-phenyl)-2-(7- methyl-1H-indazol-3-yl)-thiazol- 4-yl]-methanone 114. [5-(3,4-Difluoro-phenyl)-2-(7- methyl-1H-indazol-3-yl)-thiazol- 4-yl]-(4-methyl-piperazin-1-yl)- methanone 115. [5-(3,4-Difluoro-phenyl)-2-(7- methyl-1H-indazol-3-yl)-thiazol- 4-yl]-(3-hydroxy-pyrrolidin-1-yl)- methanone 116. [5-(3,4-Difluoro-phenyl)-2-(7- methyl-1H-indazol-3-yl)-thiazol- 4-yl]-(3-dimethylamino-pyrrolidin- 1-yl)-methanone 117. [5-(4-Fluoro-3-hydroxy-phenyl)- 2-(7-methyl-1H-indazol-3-yl)- thiazol-4-yl]-(4-methyl-piperazin- 1-yl)-methanone 118. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(3-hydroxy-azetidin- 1-yl)-methanone 119. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(4-pyridin-4-yl- piperazin-1-yl)-methanone 120. 2-(6-Chloro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole- carboxylic acid (2-diethylamino- ethyl)-amide 121. [2-(6-Fluoro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(4-methyl-piperazin- 1-yl)-methanone 122. [5-(6-Methoxy-pyridin-3-yl)-2-(7- methyl-1H-indazol-3-yl)-thiazol- 4-yl]-(4-methyl-piperazin-1-yl)- methanone 123. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yq-piperazin-1-yl- methanone 124. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(3-hydroxy- pyrrolidin-1-yl)-methanone 125. 2-(6-Chloro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid methyl-(1-methyl- pyrrolidin-3-ylmethyl)-amide 126. [2-(7-Ethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(4- methyl-piperazin-1-yl)- methanone 127. (3-Dimethylamino-pyrrolidin-1- yl)-[2-(7-ethyl-1H-[indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 128. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(4-pyridin-2-yl- piperazin-1-yl)-methanone 129. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(4-pyridin-2- ylmethyl-piperazin-1-yl)- methanone 130. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-[4-(2-hydroxy-ethyl)- piperazin-1-yl]-methanone 131. 2-(6-Chloro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid (1-methyl- piperidin-4-yl)-amide 132. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(2,3,5,6-tetrahydro- [1,2′]bipyrazinyl-4-yl)-methanone 133. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(4-pyrimidin-2-yl- piperazin-1-yl)-methanone 134. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-[3-(ethyl-methyl- amino)-azetidin-1-yl]-methanone 135. 2-(6-Chloro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid methyl-(2- methylamino-ethyl)-amide 136. 2-(6-Chloro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid (2- dimethylamino-1-methyl-ethyl)- amide 137. 2-(6-Chloro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid (2-pyrrolidin-1-yl- ethyl)-amide 138. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(4-isopropyl- piperazin-1-yl)-methanone 139. 2-(6-Chloro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid (2-morpholin-4- yl-ethyl)-amide 140. 2-(6-Chloro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid [2-(1-methyl- pyrrolidin-2-yl)-ethyl]-amide 141. 2-(6-Chloro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid (2- dimethylamino-ethyl)-methyl- amide 142. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-[4-(2-diethylamino- ethyl)-piperazin-1-yl]-methanone 143. 2-(6-Chloro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid [3-(5-oxo-4,5- dihydro-1H-pyrazot-4-yl)-propyl]- amide 144. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(3-methylamino- pyrrolidin-1-yl)-methanone 145. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(4-pyridin-4- ylmethyl-piperazin-1-yl)- methanone 146. [2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(4- pyridin-4-ylmethyl-piperazin-1- yl)-methanone 147. 2-(4,7-Dimethyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4- carboxylic acid methyl ester 148. 2-(4,7-Dimethyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4- carboxylic acid ethyl ester 149. [2-(4,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- methyl-piperazin-1-yl)- methanone 150. 2-(6-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid methyl ester 151. 2-(4-Fluoro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid methyl ester 152. 2-(6-Fluoro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid methyl-(2- methylamino-ethyl)-amide 153. [2-(6-Fluoro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-piperazin-1-yl- methanone 154. (3-Dimethylamino-pyrrolidin-1- yl)-[2-(6-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazol-4-yl]- methanone 155. (3-Dimethylamino-pyrrolidin-1- yl)-[2-(4-fluoro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-methanone 156. [2-(6-Chloro-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- piperazin-1-yl-methanone 157. [2-(6-Chloro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-[3-(4-methyl- piperazin-1-yl)-azetidin-1-yl]- methanone 158. [2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- piperazin-1-yl-methanone 159. (3-Dimethylamino-pyrrolidin-1- yl)-[2-(6-fluoro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-methanone 160. [1,4]Diazepan-1-yl-[2-(7-methyl- 1H-indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-methanone 161. (2,5-Diaza-bicyclo[2.2.1]hept-2- yl)-[2-(7-methyl-1H-indazol-3-yl}- 5-pyridin-3-yl-thiazol-4-yl]- methanone 162. [2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(4- morpholin-4-yl-piperidin-1-yl)- methanone 163. [1,4′]Bipiperidinyl-1′-yl-[2-(7- methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 164. [2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(4- pyrrolidin-1-yl-piperidin-1-yl)- methanone 165. (3-Dimethylamino-pyrrolidin-1- yl)-[2-(4,7-dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]- methanone 166. (3-Dimethylamino-pyrrolidin-1- yl)-[2-(5,7-dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]- methanone 167. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- methyl-piperazin-1-yl)- methanone 168. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]- piperazin-1-yl-methanone 169. (3-Dimethylamino-pyrrolidin-1- yl)-[2-(7-methyl-1H-indazol-3-yl)- 5-(6-methyl-pyridin-3-yl)-thiazol- 4-yl]-methanone 170. (3-Dimethylamino-pyrrolidin-1- yl)-[2-(5-fluoro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-methanone 171. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-4-yl-thiazole-4-carboxylic acid ethyl ester 172. (4-Dimethylamino-piperidin-1-yl)- [2-(7-methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 173. (4-Dimethylamino-piperidin-1-yl)- [2-(5,7-dimethyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazol-4-yl]- methanone 174. 2-(5,7-Dimethyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4- carboxylic acid methyl-(2- methylamino-ethyl)-amide 175. 2-(5,7-Dimethyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4- carboxylic acid (2- dimethylamino-ethyl)-methyl- amide 176. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- pyridin-4-ylmethyl-piperazin-1- yl)-methanone 177. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(2- pyrrolidin-1-ylmethyl-pyrrolidin-1- yl)-methanone 178. [2-(5-Fluoro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(4-methyl-piperazin- 1-yl)-methanone 179. [2-(5-Fluoro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-piperazin-1-yl- methanone 180. (3-Methylamino-pyrrolidin-1-yl)- [2-(7-methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 181. (3-Diethylamino-pyrrolidin-1-yl)- [2-(7-methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 182. (3-Diethylamino-pyrrolidin-1-yl)- [2-(5,7-dimethyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazol-4-yl]- methanone 183. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]- (2,3,5,6-tetrahydro- [1,2′]bipyrazinyl-4-yl)-methanone 184. 2-(5,7-Dimethyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4- carboxylic acid (1-methyl- piperidin-4-yl)-amide 185. (4-Cyclopentyl-piperazin-1-yl)-[2- (5,7-dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 186. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- pyridin-2-yl-piperazin-1-yl)- methanone 187. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- isopropyl-piperazin-1-yl)- methanone 188. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- pyridin-2-ylmethyl-piperazin-1- yl)-methanone 189. [2-(5-Fluoro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(4-pyridin-2-yl- piperazin-1-yl)-methanone 190. 2-(5-Fluoro-7-methyl-1H-indazol- 3-yl)-5-pyridin-3-yl-thiazole-4- carboxylic acid (1-methyl- piperidin-4-yl)-amide 191. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- pyridin-4-yl-piperazin-1-yl)- methanone 192. [2-(5-Fluoro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(4-isopropyl- piperazin-1-yl)-methanone 193. [2-(5-Fluoro-7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-(4-pyridin-2- ylmethyl-piperazin-1-yl)- methanone 194. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-[4- (2,2-dimethyl-propyl)-piperazin- 1-yl]-methanone 195. 2-(5,7-Dimethyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4- carboxylic acid [1-(2,2-dimethyl- propyl)-piperidin-4-yl]-amide 196. 2-(5,7-Dimethyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4- carboxylic acid (1-isopropyl- piperidin-4-yl)-amide 197. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-[3- (4-methyl-piperazin-1-yl)- azetidin-1-yl]-methanone 198. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(3- morpholin-4-yl-azetidin-1-yl)- methanone 199. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-[3- (ethyl-methyl-amino)-azetidin-1- yl]-methanone 200. (3-Methylamino-pyrrolidin-1-yl)- [2-(7-methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 201. 2-(5,7-Dimethyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4- carboxylic acid (1,2,2,6,6- pentamethyl-piperidin-4-yl)- amide 202. 2-(5,7-Dimethyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4- carboxylic acid piperidin-4- ylamide 203. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(3- morpholin-4-yl-pyrrolidin-1-yl)- methanone 204. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(3- hydroxy-[1,3′]bipyrrolidinyl-1′-yl)- methanone 205. [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-[3- (ethyl-methyl-amino)-pyrrolidin- 1-yl]-methanone 206 [2-(5,7-Dimethyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-[3- (isopropyl-methyl-amino)- pyrrolidin-1-yl]-methanone 207. 2-(5,7-Dimethyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4- carboxylic acid methyl-(1-methyl- pyrrolidin-3-yl)-amide 208. [1,3′]Bipyrrolidinyl-1′-yl-[2-(5,7- dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 209. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid methyl-(1-methyl-pyrrolidin- 3-yl)-amide 210. 2-(5,7-Dimethyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4- carboxylic acid methyl-(1-methyl- piperidin-4-yl)-amide 211. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid methyl-(1-methyl-piperidin- 4-yl)-amide 212. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid (1,2,2,6,6-pentamethyl- piperidin-4-yl)-amide 213. (3-Diethylamino-azetidin-1-yl)-[2- (5,7-dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 214. [1,3′]Bipyrrolidinyl-1′-yl-[2-(7- methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]- methanone 215. [3-(Isopropyl-methyl-amino)- pyrrolidin-1-yl]-[2-(7-methyl-1H- indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-methanone 216. [2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(3- morpholin-4-yl-azetidin-1-yl)- methanone 217. 2-(7-Methyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid (1-isopropyl-piperidin-4-yl)- amide
Methods of Using Compounds and Compositions - Preferred compounds of the formula (I) exhibit antimicrobial activity against a variety of pathogens. This invention is not bound by any theory of operation, but it is believed that compounds of the formula (I) exert their antimicrobial action by inhibiting gyrase B in the target bacteria in vivo and in vitro.
- A preferred embodiment provides methods of treating or preventing a bacterial infection in a mammal, comprising administering to the mammal a therapeutically effective amount of a compound of the formula (I). Reference herein to the use of a compound of the formula (I) will be understood as including reference to pharmaceutical compositions thereof, as well as pharmaceutically acceptable salts, esters, solvates and/or prodrugs thereof. The prophylactic or therapeutic dose of the compounds of the present invention, in treatment of a bacterial infection will vary with the severity of the infection and the route by which the drug is administered, such as orally, topically, transdermally, and/or parenterally. The compounds of this invention are advantageously administered orally in either solid or liquid dosage forms, with the dose, and perhaps the dose frequency, varying according to the age, body weight, and response of the individual patient. In general, the total daily dose range of the present compounds for a 70 kg person is from about 1 mg to about 2000 mg, in single or divided doses, but those skilled in the art can readily determine the appropriate dose through standard methods.
- Preferred compounds of the formula (I) have useful activity against a variety of organisms. The activity of the compounds can be assessed by standard testing procedures such as the determination of minimum inhibitory concentration (MIC) by agar dilution as described in “Approved Standard. Methods for Dilution Antimicrobial Susceptibility Tests for Bacteria That Grow Aerobically”, 3rd ed., published 1993 by the National Committee for Clinical Laboratory Standards, Villanova, Pa., USA. A number of the compounds of the formula (I) shown in Table 1 exhibit activity against one or more pathogenic bacteria such as Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, Streptococcus pyogenes, Enterococcus faecalis, Moraxella catarrhalis and H. influenzae. For example, Table 2 provides the names and structures of compounds of the formula (I) that were found to have a MIC of about 10 μM or less in the Methicillin-resistant Staphylococcus aureus assay conducted as described below in Examples 25-154.
- General Chemistry Methods. Proton NMR spectra were run at 300 MHz on a Bruker Avance 300 spectrometer, and chemical shifts are reported in parts per million (8) downfield from tetramethylsilane as internal standard. Atmospheric pressure ionization electrospray mass spectra and LCMS were recorded on an Agilent 1100 Series LC/MSD-SL 1946 D spectrometer equipped with an Agilent 100 series HPLC System. Silica gel 60 (230-400 mesh) from EM Science was used for column chromatography, and analytical or preparative thin-layer chromatography was conducted using EM Science Kieselgel 60 F254 plates. An Agilent 1100 Series HPLC with an Agilent Zorbax Eclipse XDB-C8 (4.6×150 mm) reversed phase column was used for analytical HPLC analyses. Preparative RP-HPLC was performed on a Gilson instrument with a MetaSil AQUEOUS 10 m C18 column. The elution buffer was an A/B gradient; A=H2O-0.1% trifluoroacetic acid, B=CH3 CN-0.1% trifluoroacetic acid. Products were generally characterized by 1H-NMR, LC, and/or LC-MS.
- For reactions performed under anhydrous conditions, glassware was either oven- or flame-dried and the reaction was run under a positive pressure of nitrogen. Anhydrous solvents were used as purchased from commercial sources. Except where noted, reagents were purchased from commercial sources and used without further purification. The reported yields are the actual isolated yields of purified material and are not optimized. The
- Examples 1-11 below describe the preparations of various specific compounds and are illustrative of the various materials and techniques that may be employed in the synthesis of the compounds of the formula (I). Examples 12-24 describe various steps in the synthesis of a particular compound of the formula (I). Table 1 provides the names and structures of various preferred compounds of the formula (I) prepared in accordance with the methods described herein. Examples 25-154 describe the Methicillin-resistant Staphylococcus aureus assay used to determine the activity of the compounds shown in Table 2.
- Dimethyl aniline (10 g, 82.5 mmoles; Scheme 1) was dissolved in 400 mL of dichloromethane and cooled to 0° C. To this solution was added dropwise acetyl chloride (71 mL, 1 mole) followed by a 200 mL solution of triethyl amine (140 mL, 1 mole). This solution was stirred until complete. Filter off the solid and pour the filtrate into brine, extract twice with dichloromethane, dry filter and concentrate to give 127.3 g (95% yield) of the acetylated amine as a tan solid. NMR data (300 MHz, CDCl3) for 7-methyl indazoles: 7-methyl indazole: 8.14 (s, 1H); 7.62 (d, 1H, J=8.8 Hz); 7.18 (m, 1H); 7.09 (m, 2H); 2.6 (s, 3H); 3-iodo-7-methyl indazole: 7.36 (d, 1H, J=8.8 Hz); 7.24 (dd, 1H, J=1 Hz, 6.7 Hz); 2.55 (s, 3H); 3-cyano-7-methyl indazole: 11 (bs, 1H); 7.7 (m, 1H), 7.3 (m, 2H); 2.6 (s, 3H).
- Representative Thioamide Preparation
- A solution of 1H-indazole-3-carbonitrile (11, R1=R2=H) (0.150 g, 1.05 mmol) in 20% Et3 N/pyridine (10 mL) was cooled to −78° C. Through this was then bubbled H2 S gas for 20 minutes, and then the vessel was sealed and allowed to warm to room temperature and stir overnight. Residual H2 S was removed in vacuo and the mixture concentrated. The resultant ivory colored solid was suspended in hexane, collected by filtration, and dried to provide 0.178 g, (95%) of product 16.
- Representative Thiazole Preparations
- A mixture of 1H-indazole-3-carboximidothioic acid (16, R1=R2=H) (354 mg, 2 mmol) and 2,4′-dibromopropiophenone (584 mg, 2 mmol) in dry MeOH (10 mL) was heated at 50° C. for 20 h. The reaction mixture was filtered, the solids washed with MeOH and dried to give 430 mg (58%) of product 17a as a tan solid.
- 2-(1H-indazol-3-yl)-5-phenyl-thiazol-4-ol (18, R1=R2=H; Scheme 2). Similarly, 1H-indazole-3-carboximidothioic acid (16, R1=R2=H) (0.150 g, 0.85 mmol), methyl α-bromophenyl acetate (0.195 g, 0.85 mmol), and NaHCO3 (0.142 g, 1.7 mmol) were dissolved in dry methanol and stirred overnight. The solution was concentrated, and the residue purified by preparative RP-HPLC providing 12 mg (5%) of the desired product 18 as an orange solid.
-
- An oven-dried round-bottom flask was charged with 3-[4-(4-bromo-phenyl)-5-methyl-thiazol-2-yl]-1-1H-indazole (17, R1=R2=H, R3=CH3) (37 mg, 0.1 mmol), 1-methylpiperazine (67 μL, 0.6 mmol), NaOtBu (14 mg, 0.14 mmol) and anhydrous dimethyl ether (2 mL). The reaction mixture was evacuated and backfilled with N2 several times. The catalyst, Pd2(dba)3(9 mg, 0.01 mmol) and the ligand, 2-(dicyclohexylphosphino)biphenyl (14 mg, 0.04 mmol) were added. The reaction mixture was again evacuated and backfilled with N2 and then heated at reflux overnight after which time HPLC analysis indicated complete consumption of starting material. The mixture was concentrated in vacuo, dissolved in EtOAc (20 mL) and washed with H2 0 (2×5 mL), brine (1×5 mL) and dried over anhydrous Na2 SO4. Removal of solvent afforded the crude product that was purified by RP-HPLC to give 10 mg of product 19a (25%) as a light yellow solid.
- 3-[5-methyl-4-(4-morpholin-4-yl-phenyl)-thiazol-2-yl]-1H-indazole (19b, R1=R2=H, R4=R5=cyclo-CH2 CH2 OCH2 CH2; Scheme 3). An oven-dried round-bottom flask was charged with (17, R1=R2H, R3=CH3) (37 mg, 0.1 mmol), morpholine (52 μL, 0.6 mmol), NaOtBu (14 mg, 0.14 mmol) and anhydrous toluene (2 mL). The reaction mixture was evacuated and backfilled with N2 several times. The catalyst, Pd2 (dba)3(9 mg, 0.01 mmol) and the ligand, BINAP (18 mg, 0.03 mmol) were added. The reaction mixture was again evacuated and backfilled with N2 and then heated at reflux overnight after which time HPLC analysis indicated complete consumption of starting material. The mixture was concentrated in vacuo, dissolved in EtOAc (20 mL) and washed with H2O (2×5 mL), brine (1×5 mL) and dried over anhydrous Na2 SO4. Removal of solvent affords the crude product 19b that was purified by RP-HPLC.
- To a mixture of dry ethanol (0.2 mL) and ether (20 mL) was added NaH (60% dispersion in oil, 800 mg, 20 mmol) at 0° C. and allowed it to stand for 10 min. After which, N,N-dimethylglycine methyl ester (3.5 g, 30 mmol) and 3-pyridine carboxyaldehyde (944 μL, 10 mmol) were added. The reaction mixture was stirred at 0° C. first and later at room temperature overnight. The mixture was diluted to ethyl acetate and washed with water. The organic layer was mixed with 1 N HCl and shaken well. Saturated NaHCO3 solution was added to neutralize the aqueous layer, and the product was extracted three times with ethyl acetate. The combined organic layers were concentrated to give a solid mass, which was then treated with the minimum amount of ethyl acetate and filtered to give the product 2-hydroxy-3-pyridin-3-yl-acrylic acid methyl ester.
- To a solution of 2-hydroxy-3-pyridin-3-yl-acrylic acid methyl ester (579 mg, 3 mmol, 1 equiv.) in 30 mL of THF was added bromine (154 μL, 3 mmol, 1 equiv.) in THF dropwise, followed by addition of methanol to dissolve the precipitate. The reaction mixture was allowed to stir at room temperature for 0.5 h and concentrated at room temperature with trituation a few times with THF and ethyl acetate. The product 3-bromo-2-oxo-3-pyridin-3-yl-propionic acid methyl ester hydrobromide was then dried under high vacuum and used without further purification.
- To a round-bottom flask charged with 3-bromo-2-oxo-3-pyridin-3-yl-propionic acid methyl ester hydrobromide (obtained above, 353 mg, 1 mmol, 2 equiv.) and 5 mL of anhydrous methanol was added collidine (158 μL, 1.2 mmol, 2.4 equiv.) at 0° C., followed by the thioamide (112 mg, 0.5 mmol, 1 equiv.). The reaction mixture was then moved to 50° C., stirred for 2 h. LC-MS showed the complete consumption of the thioamide and the formation of a cyclized intermediate (before dehydration). At which point, ethanesulfonic acid (98 μL, 1.2 mmol, 2.4 equiv.) was added and the reaction mixture was stirred at 50° C. overnight. The reaction mixture was concentrated and the residue was purified by RP-HPLC or used for the next step (hydrolysis).
- The ester obtained above (2-(6-chloro-7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid methyl ester) was hydrolyzed in refluxing methanol in the presence of 1 N NaOH. The reaction mixture was then concentrated and diluted with water. HCl was then added to acidify the solution. The precipitate was filtered, washed by water. The solid was dried under high vacuum. The product was finally purified by RP-HPLC.
- To a mixture of the acid, 2-(6-chloro-7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazole-4-carboxylic acid (1 equiv.), triethyl amine (3 equiv.), the amine (5-10 equiv.) in DMF, was added O-(7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (1.4 equiv.). The reaction was completed usually within minutes. The product was purified by RP-HPLC. The trifluoroacetate salt was transferred to hydrochloride salt.
- A solution of 2,4,6-trimethyl-phenylamine (1) (50 g, 0.370 moles) in CH2Cl2 (500 mL) was cooled to 0° C. (ice-water bath). To this was added acetyl chloride (29.8 g, 27 mL, 380 mmol) during 5 minutes via an addition funnel; this was followed by portion-wise addition of Et3N (38.5 g, 53 mL, 380 mmol). The ice-bath was removed and the solution was allowed to warm to room temperature and stir for 2 h. The resultant ivory colored solid was collected by filtration and dried in vacuo. To remove residual Et3N—HCl, the solid was suspended H2O (600 mL) stirred for 0.5 h, collected by filtration and dried to a constant weight. The original organic filtrate was washed with H2O (3×100 mL) and brine (1×100 mL), dried (MgSO4), filtered and concentrated providing additional product. Combined with material collected from the water afforded 60.2 g (99% yield) of the desired acetamide. RP-HPLC Method: 2-100 B in 2 minutes.
- N-(2,4,6-trimethyl-phenyl)-acetamide (23.8 g, 133 mmol) (prepared as described in Example 12) was dissolved in a mixture of toluene (300 mL) and glacial AcOH (10.4 g, 173 mmol, 1.3 eq) and then treated slowly with isoamyl nitrite (20.3 g, 23.2 mL, 173 mmol, 1.3 eq). The mixture was heated at reflux overnight or until all the starting material was consumed as judged by TLC (30% EtOAc-hexanes). The solution was then poured into H2O (1.3 L) and extracted with EtOAc (2×300 mL). The combined organic extracts were then washed with saturated aq. NaHCO3 solution (2×200 mL) and brine (1×100 mL). The extracts were dried (MgSO4), filtered, and concentrated to provide 19.5 g of 5,7-dimethyl-1H-indazole 2 as a red waxy solid. This material was carried on without additional purification. RP-HPLC Method: 2-100% B in 2 minutes.
- Indazole 2 (27.2 g, 186 mmol) in DMF (500 mL) was treated with iodine crystals (143.9 g, 567 mmol, 3 eq) and KOH (52.9 g, 945 mmol, 5 eq). The mixture was stirred at room temperature for 2 h or until complete as indicated by TLC (30% EtOAc-hexanes). The solution was concentrated to half volume, poured into 5% aq. NHSO3 (250 mL) and extracted with Et2O (3×250 mL). The organic extracts were combined, washed with H2O (2×200 mL) and brine (1×200 mL), dried over (MgSO4), filtered and concentrated. The resultant dark solid was suspended in hot EtOAc (300 mL), treated with hexane (600 mL) and then allowed to cool for 2 h. The solids were collected by filtration, providing 17.50 g of crop 1. The filtrate was concentrated and crop 2 was isolated via silica gel plug filtration. (20% EtOAc-hexanes). Concentration of the appropriate “filtography” fractions afforded 9.5 g of material that was combined with crop 1 give a total of 27 g (53% overall yield from acetanilide) of 3-iodo-5,7-dimethyl-1H-indazole 3. RP-HPLC Method 2-100% B in 2 minutes.
- Iodide 3 (20 g, 74.0 mmol) was dissolved in anhydrous NMP (300 mL). To this solution were added CuCN (19.9 g, 222 mmol, 3 eq) and NaCN (7.25 g, 148 mmol, 2 eq) and the mixture was heated at 130° C. for 18 h under an inert atmosphere. This solution was then poured into 0.25 M KH2PO4 (1.5 L) and Et2O (750 mL) and Celite (−100 g) were added. The suspension was stirred vigorously for 0.5 h then filtered through a sintered glass funnel. The phases were separated and the aqueous layer extracted with Et2O (3×200 mL). The combined organic extracts were washed with H2O (2×200 mL), brine (1×200 mL), dried (MgSO4), filtered and concentrated provide 8.3 g (65% yield) of 5,7-dimethyl-1H-indazole-3-carbonitrile 4. The nitrile was used as is for the next reaction. RP-HPLC Method: 2-100% B in 2 minutes.
- A solution of nitrile 4 (3.90 g, 22.0 mmol) in 20% Et3N-pyridine (v/v, 50 mL) was cooled to 0° C. (ice-water bath) and then saturated with H2S by bubbling H2S gas through for 5 minutes. The reaction vessel was sealed with stoppers and Parafilm, removed from the cooling bath, and stirred for 1.5 h, or until consumption of starting material was complete as indicated by TLC (50% EtOAc-hexanes). Upon completion, the solution was stirred under vacuum to remove excess H2S and then concentrated to leave a brown solid. The crude product was suspended in hexane (250-300 mL), collected by vacuum filtration and dried over P2O5 in vacuo to give 4.2 g, (93% yield) of A (5) as a yellow solid. RP-HPLC Method: 30-95% B in 4.5 minutes.
- A dry 1 L round bottomed flask was charged with anhydrous Et2O (500 mL) and cooled to 0° C. (ice-water bath). After having been rinsed with hexane, NaH (60% w/w suspension in mineral oil, 16 g, 400 mmol, 2 eq, weight before rinsing) was added followed by absolute EtOH (23.2 mL, 400 moles, 2 eq). After 10 minutes, a mixture of 3-pyridine carboxaldehyde (18.8 mL, 200 mmol, 1 eq) and N,N-dimethyl glycine ethyl ester (84.8 mL, 3 eq) (N,N-dimethyl glycine methyl ester also performs satisfactorily in this preparation) was added during 1 minute. This mixture was as stirred overnight at room temperature, heated at 30° C. for 1 h, and then transferred to a 2 L separation funnel. The mixture was diluted with EtOAc (500 mL) and H2O (500 mL) and the organic phase was transferred to a beaker and stirred with 1N HCl (500 mL) at room temperature for 10 minutes. The mixture was checked to confirm a pH=1 and then the phases were separated. The aqueous layer was retained and slowly neutralized by the addition of solid NaHCO3. This solution was extracted with EtOAc (3×300 mL), the combined extracts dried (Na2SO4), filtered and concentrated to a yellow solid. Crystallization from EtOAc-Hexanes (4:1) provided 20.0 g (52% yield) of pale yellow 8. RP-HPLC Method 2-100% B.
- To a solution of the pyruvate 8 (19.3 g, 100.0 mmol) in dry THF (400 mL) was added bromine (5.12 mL, 100.0 mmol) dropwise, followed by the addition of methanol (−10 mL) to maintain homogeneity. The reaction mixture was stirred for 30 minutes at room temperature, and then concentrated in vacuo at a bath temperature at or below 25° C. The resulting solid was triturated with THF (50 mL) and EtOAc (50 mL) three times. The resulting bromo pyruvate hydrobromide was isolated as yellow foam after drying under high vacuum in quantitative yields. The solid was used without further purification. (Occasionally, the crude bromo pyruvate product dries to a sticky gum. In this event, the material was dried as thoroughly as possible, dissolved in MeOH (0.5 mmol/mL), and used as is in the next step.) RP-HPLC Method 30-95% B in 8 minutes.
- Contained in a 2-neck round-bottomed flask a suspension of thioamide A (5) (4.5 g, 22.0 mmol) in dry MeOH (100 mL) was heated at 50° C. Separately, a solution of bromo-pyruvate B (9) (15.5 g, 44.0 mmol) in anhydrous MeOH (88 mL) was treated with collidine (10.2 mL, 77.0 mmol) at 0° C. The bromo pyruvate/collidine solution was added dropwise to the thioamide suspension maintained at 50° C. The mixture, becoming homogeneous during addition of the bromo-pyruvate solution, is heated at 50° C. for 2 h, or until consumption of thioamide is complete as judged by RP-HPLC-MS (the condensed, non-dehydrated intermediate is observable; expected mass +18). After this time, EtSO3H acid (6.3 mL, 77.0 mmol) was added and heating continued at 50° C. overnight. The mixture was concentrated and the oily residue treated with saturated aqueous sodium bicarbonate solution (˜100 mL). The resultant solid is collected by vacuum filtration and rinsed with water (2×30 mL) and dried under vacuum. The solid is purified by silica gel-plug filtration: an initial eluent of 100% CH2Cl2 removes any nitrile 4 formed (typically 1-3%) and subsequent elution with 2-5% MeOH—CH2Cl2 provides the methyl and ethyl ester mixture. RP-HPLC Methods: 30-95% B in 8 minutes for the non-dehydrated intermediate. 10-95% B in 8 minutes for the dehydrated final product.
- A solution of esters 10 (8 g, ˜22 mmol) in MeOH (100 mL) and 1N NaOH (50 mL) was heated at reflux for 2 hours. The mixture was concentrated, acidified with 1N HCl (100 mL), and the resulting solid collected by vacuum filtration. The solid was rinsed with H2O (3×20 mL) and dried under high vacuum to give 7.9 g, (51%) overall from thioamide 5. RP-HPLC Method: 10-95% B in 8 minutes.
- To a solution of 1-benzhydryl-azetidin-3-ol (15.0 g, 62.7 mmol) in dry CH2Cl2 (1 mL) at 0° C. (ice-water bath) under nitrogen was added dry Et3N (25 mL, 94.0 mmol). To this was then added a solution of methanesulfonyl chloride (5.8 mL, 75.2 mmol) in dry CH2Cl2 (50 mL) dropwise via pressure equalizing addition funnel. Upon complete addition, the cooling bath was removed and the mixture was stirred for 2 h. The heterogeneous mixture was treated with H2O (70 mL), the layers were separated and the aqueous layer was extracted with CH2Cl2 (2×100 mL). The combined organic extracts were dried (MgSO4), filtered and concentrated to leave a clear, colorless oil. Upon addition of hexanes (100 mL) the viscous oil product solidified and was collected by vacuum filtration. Drying under high vacuum provided 19.7 g (100% yield) of 12 as a colorless solid.
- To a suspension of methanesulfonic acid 1-benzhydryl-azetidin-3-yl ester (12) (18 g, 56.7 mmol) in t-BuOH (150 mL) was added 1-methyl piperazine (17.04 g, 18.8 mL, 170.1 mmol) under an inert atmosphere. After heating at reflux temperature for 12 h, the mixture was concentrated to dryness, treated with saturated NaHCO3 (250 mL) and extracted with EtOAc (3×250 mL). The combined organic layers were washed with H2O (1×250 mL) and brine (1×250 mL) and dried (Na2SO4). Filtration and removal of solvent left oil that was purified by silica gel (−300 g) filtration (first washed with EtOAc, then with 100% ammoniacal CH2Cl2-5% MeOH/ammoniacal CH2Cl2) to afford 7.6 g (42%) of 13 as a colorless, waxy solid. Ammoniacal CH2Cl2 is prepared as follows: concentrated NH4OH (100 mL) is extracted with CH2Cl2 (1×500 mL), the layers are separated, and the CH2Cl2 layer is dried and stored over anhydrous K2CO3.
- A mixture of 1-(1-benzhydryl-azetidin-3-yl)-4-methyl-piperazine (13) (1.13 g, 3.5 mmol), wet 20% Pd(OH)2/C (0.6 g) or wet 10% Pd/C degussa type (0.22 g), MeOH (50 ml) and 4N HCl in MeOH solution (1.8 ml, 7.0 mmol) was shaken under an H2 gas (50 p.s.i.g.) for 12 h. The catalyst was removed by filtration over Celite; the filter bed was rinsed with MeOH (3×10 mL) and the filtrate evaporated to dryness, and the residue rinsed with a mixture of Et2O (2 mL) and hexanes (10 ml) to remove diphenylmethane. The product C (14) crystallized upon standing providing 0.77 g (96% yield) of colorless, hygroscopic material that was used as is in subsequent steps.
- A mixture of acid 11 (1.04 g; 3.07 mmol) and azetidine dihydrochloride C (14) (0.77 g, 3.37 mmol) in dry DMF (20 mL) was treated with dry Et3N (2.14 mL, 15.34 mmol) under an inert atmosphere. To this was then added HATU (1.46 g, 3.84 mmol) in one portion. Efficient couplings have also been achieved using PyBop (1.4 equivalents based on 11) as the coupling agent. After stirring for 0.25 h, RP-HPLC indicates complete reaction. The mixture was transferred onto stirring concentrated NH4OH (400 mL) and the resulting tan solid collected by vacuum filtration. Rinsing with H2O (2×10 mL) and vacuum drying provided 0.64 g (44% yield) of 15 as the free base. Concentrating the filtrate, re-suspending in concentrated NH4OH (7 mL) and collecting by vacuum filtration provided an additional 90 mg of 15.
- Biological Assams
- ATPase enzymatic assay: DNA gyrase B activities were determined by following the gyrase B-dependent release of inorganic phosphate from ATP hydrolysis and subsequent detection through use of a 7-methyl-6-thioguanosine/phosphorylase spectrophotometric assay. Assays were performed in 25 mM Tris-HCl buffer (pH 7.6), 2 mM MgCl2, and 125 mM NaCl, 0.2 mM 7-methyl-6-thioguanosine, purine nucleoside phosphorylase (1 unit/mL), 0.4 mM ATP and various concentrations of the inhibitor compounds prepared in Me2SO. The final Me2SO concentration in each reaction was 2.5%.
- The compounds of the formula (1) shown in Table 1 were assayed against one or more of Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, Streptococcus pyogenes, Enterococcus faecalis, Moraxella catarrhalis and H. influenzae. The concentration of enzyme in the assay ranged from 65 nM for E. faecalis full-length gyrase B to 1 μM for H. influenzae full-length gyrase B. Reactions were initiated with the addition of ATP, and monitored at 360 nm at room temperature for 30 min.
- Tight-binding kinetic analysis (Morrison, J. F. Biochim. Biophys. Acta 1969, 185, 269-286) was used to determine Ki if the concentration of inhibitor did not exceed that of enzyme.
- Antimicrobial Activity Assay (MIC Determination)
- Bacteria Preparations: Overnight bacterial colonies were suspended in 0.9% NaCl to a turbidity approximately comparable to the MacFarland's standard. The spectrometer was blanked (600 nm) using well-suspended standard. Into a cuvette was placed 0.5 mL of bacterial suspension and absorbance measured. A 0.9% NaCl solution was added to the cuvette, mixed and measured until the absorbance is 0. From this the dilution factor (to achieve an absorbance of 0) for the stock bacterial solution was calculated. A solution of bacteria at this dilution is defined as a stock of 1×108 bacteria/mL. A final concentration of 5×105 bacteria per well was used for MIC determinations.
- Compound Preparation: Test compounds of the formula (I) were assayed over a wide range of concentrations using serial dilutions, dropping concentration by half at each step. Controls included wells containing no drug (uninhibited growth control), controls for no additive (no serum etc.), and controls for contamination (additives but no drugs or bacteria).
- The compounds of the formula (I) shown in Table 1 were found to exhibit activity against one or more of Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, Streptococcus pyogenes, Enterococcus faecalis, Moraxella catarrhalis and H. influenzae. Table 2 provides the names and structures of compounds of the formula (I) that were found to have a MIC of about 10 μM or less in the Methicillin-resistant Staphylococcus aureus assay.
- It will be appreciated by those skilled in the art that various omissions, additions and modifications may be made to the processes described above without departing from the scope of the invention, and all such modifications and changes are intended to fall within the scope of the invention, as defined by the appended claims.
TABLE 2 NO. STRUCTURE NAME 1. 2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazole-4-carboxylic acid (1,2,2,6,6-pentamethyl-piperidin-4- yl)-amide 2. 2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazole-4-carboxylic acid methyl-(1-methyl-piperidin-4-yl)-amide 3. 2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid methyl-(1-methyl-piperidin-4-yl)- amide 4. 2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazole-4-carboxylic acid methyl-(1-methyl-pyrrolidin-3-yl)- amide 5. [1,3′]Bipyrrolidinyl-1′-yl-[2-(5,7- dimethyl-1H-indazol-3-yl)-5-pyridin- 3-yl-thiazol-4-yl]-methanone 6. 2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid methyl-(1-methyl-pyrrolidin-3- yl)-amide 7. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thia.zol-4-yl]-[3-(iso propyl-methyl-amino)-pyrrolidin-1-yl]- methanone 8. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-[3-(ethyl- methyl-amino)-pyrrolidin-1-yl]- methanone 9. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(3-hydroxy- [1,3′]bipyrrolidinyl-1′-yl)-methanone 10. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(3- morpholin-4-yl-pyrrolidin-1-yl)-methanone 11. 2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid piperidin-4-ylamide 12. 2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid (1,2,2,6,6-pentamethyl-piperidin- 4-yl)-amide 13. (3-Methylamino-pyrrolidin-1-yl)-[2- (7-methyl-1H-indazol-3-yl)-5-pyridin- 3-yl-thiazol-4-yl]-methanone 14. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-[3 -(ethyl- methyl-amino)-azetidin-1-yl]- methanone 15. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(3-morpholin- 4-yl-azetidin-1-yl)-methanone 16. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-[3-(4- methyl-piperazin-1-yl)-azetidin-1-yl]- methanone 17. 2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid(1-isopropyl-piperidin-4-yl)-amide 18. 2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid [1-(2,2-dimethyl-propyl)- piperidin-4-yl]-amide 19. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-[4-(2,2- dimethyl-propyl)-piperazin-1-yl]- methanone 20. [2-(5-Fluoro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- pyridin-2-ylmethyl-piperazin-1-yl)- methanone 21. [2-(5-Fluoro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- isopropyl-piperazin-1-yl)-methanone 22. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(4-pyridin- 4-yl-piperazin-1-yl)-methanone 23. 2-(5-Fluoro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid (1-methyl-piperidin-4-yl)- amide 24. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(4-pyridin- 2-ylmethyl-piperazin-1-yl)- methanone 25. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(4-iso- propyl-piperazin-1-yl)-methanone 26. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(4-pyridin- 2-yl-piperazin-1-yl)-methanone 27. (4-Cyclopentyl-piperazin-1-yl)-[2-(5,7- dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-methanone 28. 2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid (1-methyl-piperidin-4-yl)-amide 29. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(2,3,5, 6-tetrahydro-[1,2′]bipyrazinyl-4-yl)- methanone 30. (3-Diethylamino-pyrrolidin-1-yl)-[2- (5,7-dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-methanone 31. (3-Diethylamino-pyrrolidin-1-yl)-[2- (7-methyl-1H-indazol-3-yl)-5-pyridin- 3-yl-thiazol-4-yl]-methanone 32. (3-Methylamino-pyrrolidin-1-yl)-[2- (7-methyl-1H-indazol-3-yl)-5-pyridin- 3-yl-thiazol-4-yl]-methanone 33. [2-(5-Fluoro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]- piperazin-1-yl-methanone 34. [2-(5-Fluoro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- methyl-piperazin-1-yl)-methanone 35. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(2-pyrroli- din-1-ylmethyl-pyrrolidin-1-yl)- methanone 36. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(4-pyridin- 4-ylmethyl-piperazin-1-yl)- methanone 37. 2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid (2-dimethylamino-ethyl)-methyl- amide 38. 2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid methyl-(2-methylamino-ethyl)-amide 39. (4-Dimethylamino-piperidin-1-yl)-[2- (5,7-dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl)-methanone 40. (4-Dimethylamino-piperidin-1-yl)-[2- (7-methyl-i H-indazol-3-yl)-5-pyridin- 3-yl-thiazol-4-yl]-methanone 41. (3-Dimethylamino-pyrrolidin-1-yl)-[2- (5-fluoro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazol-4-yl]-methanone 42. (3-Dimethylamino-pyrrolidin-1-yl)-[2- (7-methyl-1H-indazol-3-yl)-5-(6- methyl-pyridin-3-yl)-thiazol-4-yl]- methanone 43. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-piperazin- 1-yl-methanone 44. [2-(5,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(4-methyl- piperazin-1-yl)-methanone 45. (3-Dimethylamino-pyrrolidin-1-yl)-[2- 2-(5,7-dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-methanone 46. (3-Dimethylamino-pyrrolidin-1-yl)-[2- (4,7-dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-methanone 47. [2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazol-4-yl]-(4-pyrrolidin- 1-yl-piperidin-1-yl)-methanone 48. [1,4′]Bipiperidinyl-1′-yl-[2-(7-methyl- 1H-indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-methanone 49. [2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazol-4-yl]-(4-morpholin- 4-yl-piperidin-1-yl)-methanone 50. (2,5-Diaza-bicyclo[2.2.1]hept-2-yl)- [2-(7-methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazol-4-yl)-methanone 51. [1,4]Diazepan-1-yl-[2-(7-methyl-1H- indazol-3-yl)-5-pyndm-3-yl-thiazol- 4-yl]-methanone 52. (3-Dimethylamino-pyrrolidin-1-yl)-[2- (6-fluoro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazol-4-yl]-methanone 53. [2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazol-4-yl]-piperazin-1- yl-methanone 54. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-[3- (4-methyl-piperazin-1-yl)-azetidin- 1-yl]-methanone 55. (3-Dimethylamino-pyrrolidin-1-yl)-[2- 2-(4-fluoro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazol-4-yl]-methanone 56. [2-(6-Fluoro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]- piperazin-1-yl-methanone 57. 2-(6-Fluoro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid methyl-(2-methylamino-ethyl)- amide 58. 2-(4-Fluoro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid methyl ester 59. [2-(4,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazol-4-yl]-(4-methyl- piperazin-1-yl)-methanone 60. 2-(4,7-Dimethyl-1H-indazol-3-yl)-5- pyridin-3-yl-thiazole-4-carboxylic acid methyl ester 61. [2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazol-4-yl]-(4-pyridin- 4-ylmethyl-piperazin-1-yl)-methanone 62. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- pyridin-4-ylmethyl-piperazin-1-yl)- methanone 63. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(3- methylamino-pyrrolidin-1-yl)-methanone 64. 2-(6-Chloro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid [3-(5-oxo-4,5-dihydro-1H- pyrazol-4-yl)-propyl]-amide 65. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-[4- (2-diethylamino-ethyl)-piperazin-1- yl]-methanone 66. 2-(6-Chloro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid (2-dimethylamino-ethyl)- methyl-amide 67. 2-(6-Chloro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid [2-(1-methyl-pyrrolidin-2- yl)-ethyl]-amide 68. 2-(6-Chloro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid (2-morpholin-4-yl-ethyl)- amide 69. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl)-(4- isopropyl-piperazin-1-yl)-methanone 70. 2-(6-Chloro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid (2-pyrrolidin-1-yl-ethyl)-amide 71. 2-(6-Chloro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid (2-dimethylamino-1-methyl- ethyl)-amide 72. 2-(6-Chloro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid methyl-(2-methylamino-ethyl)- amide 73. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-[3- (ethyl-methyl-amino)-azetidin-1-yl]- methanone 74. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(2, 3,5,6-tetrahydro-[1,2′]bipyrazinyl- 4-yl)-methanone 75. 2-(6-Chloro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid (1-methyl-piperidin-4-yl)- amide 76. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-[4- (2-hydroxy-ethyl)-piperazin-1-yl]- methanone 77. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- pyridin-2-ylmethyl-piperazin-1-yl)- methanone 78. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- pyridin-2-yl-piperazin-1-yl)-methanone 79. (3-Dimethylamino-pyrrolidin-1-yl)-[2- (7-ethyl-1H-indazol-3-yl)-5-pyridin- 3-yl-thiazol-4-yl]-methanone 80. [2-(7-Ethyl-1H-indazol-3-yl)-5-pyridin- 3-yl-thiazol-4-yl]-(4-methyl-piperi- azin-1-yl)-methanone 81. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(3- hydroxy-pyrrolidin-1-yl)-methanone 82. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]- piperazin-1-yl-methanone 83. [5-(6-Methoxy-pyridin-3-yl)-2-(7- methyl-1H-indazol-3-yl)-thiazol-4-yl]- (4-methyl-piperazin-1-yl)-methanone 84. [2-(6-Fluoro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- methyl-piperazin-1-yl)-methanone 85. 2-(6-Chloro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid (2-diethylamino-ethyl)-amide 86. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- pyridin-4-yl-piperazin-1-yl)-methanone 87. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3 -yl-thiazol-4-yl]-(3- hydroxy-azetidin-1-yl)-methanone 88. [5-(3,4-Difluoro-phenyl)-2-(7-methyl- 1H-indazol-3-yl)-thiazol-4-yl]-(3- dimethylamino-pyrrolidin-1-yl)- methanone 89. [5-(3,4-Difluoro-phenyl)-2-(7-methyl- 1H-indazol-3-yl)-thiazol-4-yl]-(3- hydroxy-pyrrolidin-1-yl)-methanone 90. [5-(3,4-Difluoro-phenyl)-2-(7-methyl- 1H-indazol-3-yl)-thiazol-4-yl]-(4- methyl-piperazin-1-yl)-methanone 91. (3-Dimethylamino-pyrrolidin-1-yl)-[5- (4-hydroxy-phenyl)-2-(7-methyl-1H- indazol-3-yl)-thiazol-4-yl]-methanone 92. [5-(3-Fluoro-phenyl)-2-(7-methyl-1H- indazol-3-yl)-thiazol-4-yl]-(4-methyl- piperazin-1-yl)-methanone 93. (3-Hydroxy-azetidin-1-yl)-[2-(7-methyl- 1H-indazol-3-yl)-5-pyridin-3-yl- thiazol-4-yl]-methanone 94. [5-(3,5-Difluoro-phenyl)-2-(7-methyl- 1H-indazol-3-yl)-thiazol-4-yl]-(3- hydroxy-pyrrolidin-1-yl)-methanone 95. [5-(3,5-Difluoro-phenyl)-2-(7-methyl- 1H-indazol-3-yl)-thiazol-4-yl]-(4- methyl-piperazin-1-yl)-methanone 96. [5-(4-Fluoro-phenyl)-2-(7-methyl-1H- indazol-3-yl)-thiazol-4-yl]-(3-hydroxy- pyrrolidin-1-yl)-methanone 97. 2-(4-Chloro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid methyl ester 98. 5-(4-Hydroxy-phenyl)-2-(7-methyl-1H- indazol-3-yl)-thiazole-4-carboxylic acid methyl ester 99. 5-(4-Fluoro-phenyl)-2-(7-methyl-1H- indazol-3-yl)-thiazole-4-carboxylic acid methyl ester 100. 2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazole-4-carboxylic acid ethyl-methyl-amide 101. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(4- methyl-piperazin-1-yl)-methanone 102. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(3- hydroxy-pyrrolidin-1-yl)-methanone 103. [2-(6-Chloro-7-methyl-1H-indazol-3- yl)-5-pyridin-3-yl-thiazol-4-yl]-(3- dimethylamino-pyrrolidin-1-yl)- methanone 104. 2-(6-Chloro-7-methyl-1H-indazol-3-yl)- 5-pyridin-3-yl-thiazole-4-carboxylic acid methyl ester 105. [2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazol-4-yl]-morpholin-4-yl- methanone 106. (3-Dimethylamino-pyrrolidin-1-yl)-[5- (3-methoxy-phenyl)-2-(7-methyl-1H- indazol-3-yl)-thiazol-4-yl]-methanone 107. (3,5-Dimethyl-piperidin-1-yl)-[2-(7- methyl-1H-indazol-3-yl)-5-pyridin- 3-yl-thiazol-4-yl]-methanone 108. [2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazol-4-yl]-piperidin-1-yl- methanone 109. [5-(6-Chloro-pyridin-3-yl)-2-(7-methyl- 1H-indazol-3-yl)-thiazol-4-yl]- (3-dimethylamino-pyrrolidin-1-yl)- methanone 110. (3-Dimethylamino-pyrrolidin-1-yl)-[2- (7-methyl-1H-indazol-3-yl)-5-(6-tri- fluoromethyl-pyridin-3-yl)-thiazol- 4-yl]-methanone 111. (3-Hydroxy-pyrrolidin-1-yl)-[2-(7- methyl-1H-indazol-3-yl)-5-pyridin-3- yl-thiazol-4-yl]-methanone 112. (3,5-Dimethyl-piperazin-1-yl)-[2-(7- methyl-1H-indazol-3-yl)-5-pyridin- 3-yl-thiazol-4-yl]-methanone 113. 2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazole-4-carboxylic acid 1-methyl-piperidin-4-yl ester 114. 2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazole-4-carboxylic acid 1-methyl-pyrrolidin-3-yl ester 115. [2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazol-4-yl]-(4-methyl- piperazin-1-yl)-methanone 116. (3-Dimethylamino-pyrrolidin-1-yl)-[2- (7-methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazol-4-yl]-methanone 117. (3-Dimethylamino-pyrrolidin-1-yl)-[2- (7-methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazol-4-yl]-methanone 118. [2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazol-4-yl]-(4-pyridin- 4-yl-piperazin-1-yl)-methanone 119. 2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazole-4-carboxylic acid (2-dimethylamino-ethyl)-methyl-amide 120. 2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazole-4-carboxylic acid (1-methyl-piperidin-4-yl)-amide 121. 2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazole-4-carboxylic acid (2-diethylamino-ethyl)-amide 122. 2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazole-4-carboxylic acid ethyl ester 123. 2-(7-Methyl-1H-indazol-3-yl)-5-pyri- din-3-yl-thiazole-4-carboxylic acid methyl ester 124. 2-(7-Methyl-1H-mdazol-3-yl)-5-phenyl- thiazole-4-carboxylic acid methyl ester 125. 2-Bromo-5-[2-(1H-indazol-3-yl)-4- methyl thiazol-5-yl]-phenol 126. 2-(1H-Indazol-3-yl)-5-phenyl-thiazole- 4-carboxylic acid (2-dimethylamino- ethyl)-amide 127. 3-[2-(7-Chloro-1H-indazol-3-yl)-4- methyl-thiazol-5-yl]-phenol 128. 2-(1H-Indazol-3-yl)-5-phenyl- thiazol-4-ol 129. 3-[2-(1H-Indazol-3-yl)-4-methyl- thiazol-5-yl]-phenol 130. 3-[5-(4-Bromo-3-methoxy-phenyl)-4- methyl-thiazol-2-yl]-1H-indazole
Claims (41)
1. A compound comprising an indazolyl group and a thiazolyl group, the compound being represented by the structure
wherein R7 is selected from the group consisting of C1-C6 hydrocarbon, lower alkoxy, lower thioalkoxy, CN, NO2, halogen, CF3, and OCF3; and
wherein the C1-C6 hydrocarbon, indazolyl group, and thiazolyl group are optionally substituted on carbon;
or a pharmaceutically acceptable salt, ester, solvate or prodrug thereof.
2. The compound of claim 1 , wherein R7 is selected from the group consisting of methyl, ethyl, propyl, allyl, F, Cl, and Br.
3. The compound of claim 2 , wherein the propyl is cyclopropyl.
4. The compound of claim 2 , wherein R7 is selected from the group consisting of methyl, ethyl, F, and Cl.
5. The compound of claim 4 , wherein R7 is methyl.
6. The compound of claim 1 , wherein the indazolyl group bears at least one substituent selected from the group consisting of optionally substituted C1-C6 hydrocarbon, optionally substituted heterocycle, lower alkoxy, CN, NO2, F, Cl, Br, CF3, and OCF3.
7. The compound of claim 6 , wherein the indazolyl bears at least one substituent selected from the group consisting of optionally substituted C1-C6 hydrocarbon, F, and Cl.
8. The compound of claim 7 , wherein the indazolyl group bears at least one substituent selected from the group consisting of methyl, ethyl, propyl, allyl, methylcyclopropyl, F, and Cl.
9. The compound of claim 8 , wherein the indazolyl group bears at least one substituent selected from the group consisting of methyl, ethyl, F, and Cl.
10. The compound of claim 1 , wherein the thiazolyl group bears at least one substituent selected from the group consisting of optionally substituted C1-C10 hydrocarbon, optionally substituted C1-C10 heterocycle, optionally substituted carboxamido, optionally substituted aminocarboxy, optionally substituted C1-C6 alkoxy, optionally substituted C1-C6 alkoxycarbonyl, OH, and COOH.
11. The compound of claim 10 , wherein the thiazolyl group bears at least one substituent selected from the group consisting of methyl, ethyl, OH, COOH, COOCH3, and COOCH2CH3.
12. The compound of claim 10 , wherein the thiazolyl group bears at least one substituent selected from the group consisting of optionally substituted C1-C10 hydrocarbon, optionally substituted C1-C6 alkoxycarbonyl, COOH, OH, COOR3, and CONR8R9,
wherein R3 is selected from the group consisting of optionally substituted heterocycle and C1-C6 alkyl substituted by heterocycle;
wherein R8 and R9 are independently selected from the group consisting of H, optionally substituted heterocycle, and optionally substituted C1-C6 hydrocarbon;
wherein R8 and R9 may together form a four-, five-, or six-membered optionally substituted heterocyclic ring including the N atom to which R8 and R9 are attached; and
wherein for said ring one to three carbon atoms may optionally each independently be replaced by an atom selected from the group consisting of N, O, and S.
13. The compound of claim 10 , wherein the thiazolyl group bears two substituents, each of which is independently selected from the group consisting of optionally substituted C1-C10 hydrocarbon, COOH, optionally substituted C1-C6 alkoxycarbonyl, OH, COOR3, and CONR8R9,
wherein R3 is selected from the group consisting of optionally substituted heterocycle and C1-C6 alkyl substituted by heterocycle;
wherein R8 and R9 are independently selected from the group consisting of H, optionally substituted heterocycle, and optionally substituted C1-C6 hydrocarbon,
wherein R8 and R9 may together form a four-, five-, or six-membered optionally substituted heterocyclic ring including the N atom to which R and R′ are attached; and
wherein for said ring one to three carbon atoms may optionally each independently be replaced by an atom selected from the group consisting of N, O, and S.
14. The compound of claim 12 , wherein the substituent is selected from the group consisting of methyl, ethyl, OH, phenyl, COOH, COOCH3, COOCH2CH3, and N(CH3)(CH2CH3).
16. The compound of claim 10 , wherein the substituent is selected from the group consisting of phenyl and pyridyl,
wherein the phenyl is optionally substituted with at least one second substituent selected from the group consisting of OH, OCH3, F, Cl, Br, optionally substituted piperazin-1-yl, and optionally substituted morpholin-4-yl; and
wherein the pyridyl is optionally substituted with at least one third substituent selected from the group consisting of C1-C6 alkyl, F, Cl, Br, I, CF3 3,5-dimethyl-piperazin-1-yl, and morpholin-4-yl.
17. The compound of claim 16 , wherein the optionally substituted phenyl is selected from the group consisting of 3-hydroxyphenyl, 4-hydroxyphenyl, 3-methoxyphenyl, 3-fluorophenyl, 4-fluorophenyl, 4-fluoro-3-hydroxy-phenyl, 3,4-difluoro-phenyl, 3,5-difluoro-phenyl, 4-bromo-3-methoxy-phenyl, 4-(4-methyl-piperazin-1-yl)-phenyl, and 4-(morpholin-4-yl)-phenyl.
18. The compound of claim 16 , wherein the pyridyl is selected from the group consisting of pyridin-3-yl, 6-methyl-pyridin-3-yl, 6-chloro-pyridin-3-yl, and 6-trifluoromethyl-pyridin-3-yl.
19. The compound of claim 1 , wherein the compound is (3-dimethylamino-pyrrolidin-1-yl)-[2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-methanone.
20. The compound of claim 1 , wherein the compound is (3-(S)-dimethylamino-pyrrolidin-1-yl)-[2-(7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-methanone.
21. The compound of claim 1 , wherein the compound is (3-dimethylamino-pyrrolidin-1-yl)-[2-(6-fluoro-7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-methanone.
22. The compound of claim 1 , wherein the compound is (3-(S)-dimethylamino-pyrrolidin-1-yl)-[2-(6-fluoro-7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-methanone.
23. The compound of claim 1 , wherein the compound is a (3-dimethylamino-pyrrolidin-1-yl)-[2-(6-fluoro-7-methyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-methanone in which the pyridyl is methyl substituted.
24. The compound of claim 1 , wherein the compound is (3-dimethylamino-pyrrolidin-1-yl)-[2-(7-methyl-1H-indazol-3-yl)-5-(6-methyl-pyridin-3-yl)-thiazol-4-yl]-methanone.
25. The compound of claim 1 , wherein the compound is (3-(S)-dimethylamino-pyrrolidin-1-yl)-[2-(7-methyl-1H-indazol-3-yl)-5-(6-methyl-pyridin-3-yl)-thiazol-4-yl]-methanone.
26. The compound of claim 1 , wherein the compound is (3-dimethylamino-pyrrolidin-1-yl)-[2-(6-fluoro-7-methyl-1H-indazol-3-yl)-5-(6-methyl-pyridin-3-yl)-thiazol-4-yl]-methanone.
27. The compound of claim 1 , wherein the compound is (3-(S)-dimethylamino-pyrrolidin-1-yl)-[2-(6-fluoro-7-methyl-1H-indazol-3-yl)-5-(6-methyl-pyridin-3-yl)-thiazol-4-yl]-methanone.
28. The compound of claim 1 , wherein the compound is [2-(5,7-dimethyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-(4-methyl-piperazin-1-yl)-methanone.
29. The compound of claim 1 , wherein the compound is 1-[2-(5,7-dimethyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-2-(1-methyl-piperidin-4-yl)-ethanone.
30. The compound of claim 1 , wherein the compound is [2-(5,7-dimethyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-[3-(4-methyl-piperazin-1-yl)-azetidin-1-yl]-methanone.
31. The compound of claim 1 , wherein the compound is [2-(5,7-dimethyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-(3-morpholin-4-yl-azetidin-1-yl)-methanone.
32. The compound of claim 1 , wherein the compound is [2-(5,7-dimethyl-1H-indazol-3-yl)-5-pyridin-3-yl-thiazol-4-yl]-[3-(ethyl-methyl-amino)-azetidin-1-yl]-methanone.
33. The compound of claim 1 that is synthetically produced.
34. The isolated, purified compound of claim 1 .
35. A composition comprising the compound of claim 1 and a pharmaceutically acceptable carrier.
36. A method of treating or preventing a bacterial infection in a mammal, comprising administering to the mammal an effective amount of the composition of claim 35 .
37. A method of treating or preventing a bacterial infection in a mammal, comprising administering to the mammal an effective amount of the compound of claim 1 .
38. The method of claim 37 , comprising identifying a mammal suffering from the bacterial infection.
39. A method for making the compound of claim 1 , comprising:
treating an optionally substituted indazole represented by the formula
wherein R7 is selected from the group consisting of C1-C6 hydrocarbon, lower alkoxy, lower thioalkoxy, CN, NO2, halogen, CF3, and OCF3;
wherein the C1-C6 hydrocarbon is optionally substituted; and
wherein LG represents a leaving group;
with a cyanide salt to form an optionally substituted indazole nitrile represented by the formula
40. The method of claim 39 , wherein the leaving group is selected from the group consisting of chloro, bromo, iodo, trifluoromethanesulfonate, methanesulfonate, p-toluenesulfonate, and trifluoroacetate.
41. The method of claim 40 , wherein the leaving group is iodo.
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Also Published As
Publication number | Publication date |
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US20050054697A1 (en) | 2005-03-10 |
WO2005026162A1 (en) | 2005-03-24 |
US6984652B2 (en) | 2006-01-10 |
CA2537860A1 (en) | 2005-03-24 |
JP2007504224A (en) | 2007-03-01 |
BRPI0414177A (en) | 2006-10-31 |
EP1664040A1 (en) | 2006-06-07 |
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