NZ716783B2 - Inhibitors of influenza viruses replication - Google Patents
Inhibitors of influenza viruses replication Download PDFInfo
- Publication number
- NZ716783B2 NZ716783B2 NZ716783A NZ71678312A NZ716783B2 NZ 716783 B2 NZ716783 B2 NZ 716783B2 NZ 716783 A NZ716783 A NZ 716783A NZ 71678312 A NZ71678312 A NZ 71678312A NZ 716783 B2 NZ716783 B2 NZ 716783B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- compound
- mmol
- pharmaceutically acceptable
- independently
- minutes
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- 125000000246 pyrimidin-2-yl group Chemical group [H]C1=NC(*)=NC([H])=C1[H] 0.000 description 1
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- 125000004528 pyrimidin-5-yl group Chemical group N1=CN=CC(=C1)* 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 125000002943 quinolinyl group Chemical group N1=C(C=CC2=CC=CC=C12)* 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000003340 retarding agent Substances 0.000 description 1
- ITDJKCJYYAQMRO-UHFFFAOYSA-L rhodium(2+);diacetate Chemical compound [Rh+2].CC([O-])=O.CC([O-])=O ITDJKCJYYAQMRO-UHFFFAOYSA-L 0.000 description 1
- 229960000888 rimantadine Drugs 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- CRDYSYOERSZTHZ-UHFFFAOYSA-M selenocyanate Chemical compound [Se-]C#N CRDYSYOERSZTHZ-UHFFFAOYSA-M 0.000 description 1
- 125000002327 selenol group Chemical group [H][Se]* 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 235000019615 sensations Nutrition 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 231100000872 sexual dysfunction Toxicity 0.000 description 1
- 201000001880 sexual dysfunction Diseases 0.000 description 1
- 238000000526 short-path distillation Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000001187 sodium carbonate Substances 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- 235000011006 sodium potassium tartrate Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- VQOIVBPFDDLTSX-UHFFFAOYSA-M sodium;3-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=CC(S([O-])(=O)=O)=C1 VQOIVBPFDDLTSX-UHFFFAOYSA-M 0.000 description 1
- 230000003381 solubilizing Effects 0.000 description 1
- WSWCOQWTEOXDQX-UHFFFAOYSA-N sorbic acid Chemical compound CC=CC=CC(O)=O WSWCOQWTEOXDQX-UHFFFAOYSA-N 0.000 description 1
- 235000010199 sorbic acid Nutrition 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
- 239000001587 sorbitan monostearate Substances 0.000 description 1
- 235000011076 sorbitan monostearate Nutrition 0.000 description 1
- 229940035048 sorbitan monostearate Drugs 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-M stearate Chemical compound CCCCCCCCCCCCCCCCCC([O-])=O QIQXTHQIDYTFRH-UHFFFAOYSA-M 0.000 description 1
- 229940114926 stearate Drugs 0.000 description 1
- 239000003206 sterilizing agent Substances 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 238000010254 subcutaneous injection Methods 0.000 description 1
- 239000007929 subcutaneous injection Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229940086735 succinate Drugs 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 239000003765 sweetening agent Substances 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 229960001367 tartaric acid Drugs 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- IOGXOCVLYRDXLW-UHFFFAOYSA-N tert-butyl nitrite Chemical compound CC(C)(C)ON=O IOGXOCVLYRDXLW-UHFFFAOYSA-N 0.000 description 1
- 239000012414 tert-butyl nitrite Substances 0.000 description 1
- 150000004685 tetrahydrates Chemical class 0.000 description 1
- 125000003039 tetrahydroisoquinolinyl group Chemical group C1(NCCC2=CC=CC=C12)* 0.000 description 1
- 125000001712 tetrahydronaphthyl group Chemical group C1(CCCC2=CC=CC=C12)* 0.000 description 1
- 125000000147 tetrahydroquinolinyl group Chemical group N1(CCCC2=CC=CC=C12)* 0.000 description 1
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical compound C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 description 1
- 125000003831 tetrazolyl group Chemical group 0.000 description 1
- 125000001113 thiadiazolyl group Chemical group 0.000 description 1
- 125000001984 thiazolidinyl group Chemical group 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-M toluene-4-sulfonate Chemical compound CC1=CC=C(S([O-])(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-M 0.000 description 1
- 239000012049 topical pharmaceutical composition Substances 0.000 description 1
- 235000010487 tragacanth Nutrition 0.000 description 1
- 239000000196 tragacanth Substances 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- ILWRPSCZWQJDMK-UHFFFAOYSA-N triethylazanium;chloride Chemical class Cl.CCN(CC)CC ILWRPSCZWQJDMK-UHFFFAOYSA-N 0.000 description 1
- 150000004684 trihydrates Chemical class 0.000 description 1
- 239000011778 trisodium citrate Substances 0.000 description 1
- YZCKVEUIGOORGS-NJFSPNSNSA-N tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 description 1
- 229910052722 tritium Inorganic materials 0.000 description 1
- ZDPHROOEEOARMN-UHFFFAOYSA-M undecanoate Chemical compound CCCCCCCCCCC([O-])=O ZDPHROOEEOARMN-UHFFFAOYSA-M 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-M valerate Chemical class CCCCC([O-])=O NQPDZGIKBAWPEJ-UHFFFAOYSA-M 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 230000017613 viral reproduction Effects 0.000 description 1
- 239000003871 white petrolatum Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/21—Esters, e.g. nitroglycerine, selenocyanates
- A61K31/215—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/35—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
- A61K31/351—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom not condensed with another ring
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/4353—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems
- A61K31/437—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems the heterocyclic ring system containing a five-membered ring having nitrogen as a ring hetero atom, e.g. indolizine, beta-carboline
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
- A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
- A61K31/444—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a six-membered ring with nitrogen as a ring heteroatom, e.g. amrinone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/4965—Non-condensed pyrazines
- A61K31/497—Non-condensed pyrazines containing further heterocyclic rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
- A61K31/506—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim not condensed and containing further heterocyclic rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
- A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
- A61P31/14—Antivirals for RNA viruses
- A61P31/16—Antivirals for RNA viruses for influenza or rhinoviruses
-
- 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
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6561—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom containing systems of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring or ring system, with or without other non-condensed hetero rings
Abstract
Disclosed are 3-((2-(1H-pyrrolo[2,3-b]pyridin-3-yl)pyrimidin-4-yl)amino)-4,4-dimethylpentanoic acid and 3-((6-(1H-pyrazolo[3,4-b]pyridin-3-yl)pyridin-2-yl)amino)-4,4-dimethylpentanoic acid derivatives and analogues as represented by Formula (IV): or a pharmaceutically acceptable salt thereof, wherein: X1 is fluoro, chloro, trifluoromethyl, cyano, or methyl; X2 is hydrogen, fluoro, or chloro; Z1 is N or CH; Z2 is N or CH, CF, or CCN; R1, R2, and R3 are each independently methyl, fluoromethyl, trifluoromethyl, ethyl, 2-fluoroethyl, or 2,2,2,-trifluoroethyl; R4 and R5 are hydrogen; Q is –C(O)OR; and R is hydrogen or alkyl; provided that the compound of Formula (IV) is not (R)-3-((5-fluoro-2-(5-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)pyrimidin-4-yl)amino)-4,4-dimethylpentanoic acid. Also disclosed is a pharmaceutical composition which comprises a compound of Formula (IV) or a pharmaceutically acceptable salt thereof; and a pharmaceutically acceptable carrier, adjuvant or vehicle; for treating or preventing influenza virus infection in a patient. n: X1 is fluoro, chloro, trifluoromethyl, cyano, or methyl; X2 is hydrogen, fluoro, or chloro; Z1 is N or CH; Z2 is N or CH, CF, or CCN; R1, R2, and R3 are each independently methyl, fluoromethyl, trifluoromethyl, ethyl, 2-fluoroethyl, or 2,2,2,-trifluoroethyl; R4 and R5 are hydrogen; Q is –C(O)OR; and R is hydrogen or alkyl; provided that the compound of Formula (IV) is not (R)-3-((5-fluoro-2-(5-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)pyrimidin-4-yl)amino)-4,4-dimethylpentanoic acid. Also disclosed is a pharmaceutical composition which comprises a compound of Formula (IV) or a pharmaceutically acceptable salt thereof; and a pharmaceutically acceptable carrier, adjuvant or vehicle; for treating or preventing influenza virus infection in a patient.
Description
PATENTS FORM NO. 5 Our ref: SGR 237146NZPR
DIVISIONAL APPLICATION FILED OUT OF NZ 620086
NEW ZEALAND
PATENTS ACT 1953
COMPLETE SPECIFICATION
Inhibitors of influenza s replication
We, Vertex Pharmaceuticals Incorporated of 50 Northern Avenue, Boston, 02210,
Massachusetts, United States of America hereby declare the invention, for which we pray
that a patent may be granted to us and the method by which it is to be med, to be
particularly described in and by the following statement:
(Followed by page 1a)
103786555_1.docx:SGR:ewa
INHIBITORS OF INFLUENZA VIRUSES REPLICATION
RELATED APPLICATIONS
This application claims priority to U.S. Provisional Application No. 61/513,793,
filed August 01, 2011, the entire teachings of which are incorporated herein by reference.
BACKGROUND OF THE INVENTION
Influenza spreads around the world in seasonal epidemics, resulting in the deaths
of hundreds of thousands annually - ns in pandemic years. For example, three influenza
pandemics occurred in the 20th century and killed tens of millions of people, with each of these
pandemics being caused by the appearance of a new strain of the virus in humans. Often, these
new strains result from the spread of an existing influenza virus to humans from other animal
species.
nza is primarily transmitted from person to person via large virus-laden
droplets that are generated when infected persons cough or sneeze; these large droplets can then
settle on the mucosal surfaces of the upper respiratory tracts of susceptible individuals who are
near (e.g. within about 6 feet) infected s. Transmission might also occur through direct
contact or indirect contact with respiratory ions, such as touching surfaces contaminated
with influenza virus and then ng the eyes, nose or mouth. Adults might be able to spread
influenza to others from 1 day before g symptoms to approximately 5 days after ms
start. Young children and s with weakened immune s might be infectious for 10 or
more days after onset of ms.
Influenza viruses are RNA viruses of the family Orthomyxoviridae, which
comprises five genera: Influenza virus A, Influenza virus B, nza virus C, Isavirus and
Thogoto virus.
The Influenza virus A genus has one species, influenza A virus. Wild aquatic
birds are the natural hosts for a large variety of influenza A. Occasionally, viruses are transmitted
to other species and may then cause devastating outbreaks in domestic poultry or give rise to
- 1a -
(Followed by page 2)
human influenza pandemics. The type A s are the most virulent human pathogens among
the three influenza types and cause the most severe disease. The influenza A virus can be
subdivided into different serotypes based on the antibody response to these viruses. The
serotypes that have been confirmed in humans, ordered by the number ofknown human
pandemic , are: H1N1 (which caused Spanish influenza in 1918), H2N2 (which caused
Asian Influenza in 1957), H3N2 (which caused Hong Kong Flu in 1968), H5N1 (a pandemic
threat in the 2007—08 influenza season), H7N7 (which has l zoonotic potential), H1N2
(endemic in humans and pigs), H9N2, H7N2 H7N3 and H10N7.
The Influenza virus B genus has one species, influenza B virus. Influenza B
almost exclusively infects humans and is less common than influenza A. The only other animal
known to be susceptible to influenza B ion is the seal. This type of influenza mutates at a
rate 2—3 times slower than type A and consequently is less genetically diverse, with only one
influenza B serotype. As a result of this lack of antigenic diversity, a degree of immunity to
influenza B is usually acquired at an early age. r, influenza B s enough that
lasting immunity is not le. This reduced rate of antigenic change, combined with its
d host range (inhibiting cross species antigenic shift), s that pandemics of influenza
B do not occur.
The Influenza virus C genus has one species, influenza C virus, which infects
humans and pigs and can cause severe illness and local epidemics. However, influenza C is less
common than the other types and usually seems to cause mild disease in children.
Influenza A, B and C viruses are very similar in structure. The virus particle is
80—120 nanometers in diameter and y roughly spherical, although ntous forms can
occur. Unusually for a virus, its genome is not a single piece of nucleic acid; instead, it contains
seven or eight pieces of segmented negative-sense RNA. The Influenza A genome encodes 11
proteins: hemagglutinin (HA), neuraminidase (NA), nucleoprotein (NP), M1, M2, NSl,
NSZ(NEP), PA, PB 1, PB 1 -F2 and PB2.
HA and NA are large glycoproteins on the outside of the viral particles. HA is a
lectin that mediates binding of the virus to target cells and entry of the viral genome into the
target cell, while NA is involved in the release of progeny virus from infected cells, by cleaving
sugars that bind the mature viral particles. Thus, these proteins have been targets for antiviral
drugs. Furthermore, they are antigens to which antibodies can be raised. Influenza A viruses are
classified into subtypes based on dy responses to HA and NA, forming the basis of the H
and N ctions (vide supra) in, for example, H5Nl.
Influenza produces direct costs due to lost productivity and ated medical
treatment, as well as indirect costs of preventative measures. In the United , influenza is
responsible for a total cost of over $10 billion per year, while it has been estimated that a future
pandemic could cause hundreds of billions of dollars in direct and indirect costs. tative
costs are also high. Governments worldwide have spent billions ofUS. dollars preparing and
planning for a potential H5Nl avian influenza pandemic, with costs ated with sing
drugs and vaccines as well as developing disaster drills and strategies for improved border
controls.
Current treatment options for za include vaccination, and chemotherapy or
chemoprophylaxis with anti-viral medications. Vaccination against influenza with an influenza
vaccine is often recommended for high-risk groups, such as children and the y, or in people
that have asthma, diabetes, or heart disease. However, it is possible to get vaccinated and still
get influenza. The vaccine is ulated each season for a few specific influenza strains but
cannot possibly include all the strains actively infecting people in the world for that season. It
takes about six months for the manufacturers to formulate and produce the millions of doses
required to deal with the seasonal epidemics; occasionally, a new or overlooked strain becomes
prominent during that time and infects people although they have been vaccinated (as by the
H3N2 Fujian flu in the 2003—2004 influenza season). It is also possible to get ed just
before vaccination and get sick with the very strain that the vaccine is ed to t, as the
vaccine takes about two weeks to become effective.
Further, the effectiveness of these influenza vaccines is variable. Due to the high
mutation rate of the virus, a particular influenza vaccine usually confers protection for no more
than a few years. A e formulated for one year may be ineffective in the following year,
since the influenza virus changes rapidly over time, and different strains become dominant.
Also, because of the absence ofRNA proofreading enzymes, the RNA-dependent
RNA polymerase of influenza vRNA makes a single nucleotide insertion error roughly every 10
thousand nucleotides, which is the approximate length of the za vRNA. Hence, nearly
every newly-manufactured influenza virus is a mutant—antigenic drift. The separation of the
genome into eight separate segments ofvRNA allows mixing or reassortment ofvRNAs if more
than one viral line has ed a single cell. The resulting rapid change in viral genetics
produces antigenic shifts and allows the virus to infect new host species and y overcome
WO 19828
protective immunity.
ral drugs can also be used to treat influenza, with neuraminidase inhibitors
being particularly effective, but viruses can develop resistance to the standard antiviral drugs.
Thus, there is still a need for drugs for treating influenza infections, such as for
drugs with expanded ent window, and/or reduced sensitivity to Viral titer.
SUMMARY OF THE INVENTION
The present invention lly relates to methods of treating influenza, to
methods of inhibiting the replication of influenza Viruses, to methods of reducing the amount of
influenza Viruses, and to compounds and compositions that can be employed for such methods.
In one embodiment, the present invention is directed to a compound represented
by Structural Formula (1):
R1fRs
| \
/ ,21
N N
or a pharmaceutically acceptable salt f, n:
X1 is —F, —c1, -CF3, —CN, or CH3;
X2 is —H, —F, or —Cl;
Z1 is N or CH;
Z2 is N or CR0;
Z3 is CH or N;
Y is —C(R4R5)-[C(R6R7)]n-Q or —C(R4)=C(R6)-Q;
R0 is —H, -F, or CN;
R1, R2, and R3 are each and independently —CH3, -CH2F, -CF3, —C2H5, -CH2CH2F,
-CH2CF3; or optionally R2 and R3, or R1, R2 and R3, er with the carbon atom to which they
are attached, form a 3-10 membered carbocyclic ring;
R4 and R5 are each and independently —H;
R6 and R7 are each and independently —H, -OH, -CH3, or —CF3; or
optionally, R5 and R7 together with the carbon atoms to which they are attached form a
cyclopropane ring; and
each Q is independently —C(O)OR, -OH, -CH20H, -S(O)R’, -P(O)(OH)2, -S(O)2R’,
-S(O)2-NR’ ’R”’, or a 5-membered heterocycle selected from the group ting of:,
2“ij 1 Hi] E V7”
JQ is —H, —OH or —CH20H;
R is —H or C1_4 alkyl;
R’ is —OH, C1_4 alkyl, or -CH2C(O)OH;
R’ ’ is —H or -CH3;
R’’ ’ is —H, a 3-6 membered yclic ring, or C1_4 alkyl optionally substituted with one
or more substituents selected from the group consisting of halogen, -ORa and —C(O)ORa;
R81 is —H or C1_4 alkyl; and
n is 0 or 1.
In another embodiment, the present invention is directed to a pharmaceutical
composition comprising a compound disclosed herein (e.g., a compound represented by any one
of Structural Formulae (I) — (X), or a pharmaceutically acceptable salt thereof) and a
pharmaceutically acceptable carrier, adjuvant or vehicle.
In yet another embodiment, the present invention is directed to a method of
inhibiting the replication of influenza viruses in a biological sample or patient, comprising the
step of administering to said biological sample or patient an effective amount of a compound
sed herein (e.g., a compound represented by any one of ural Formulae (I) — (X), or a
pharmaceutically acceptable salt thereof).
In yet another embodiment, the present ion is directed to a method of
ng the amount of influenza viruses in a biological sample or in a patient, sing
stering to said biological sample or patient an effective amount of a compound disclosed
herein (e.g., a compound represented by any one of Structural Formulae (I) — (X), or a
pharmaceutically acceptable salt thereof).
] In yet r ment, the present invention is directed to a method of
method of treating influenza in a patient, comprising administering to said patient an effective
amount of a compound sed herein (e.g., a compound represented by any one of Structural
Formulae (I) — (X), or a pharmaceutically acceptable salt thereof).
The present invention also provides use of the compounds described herein for
inhibiting the replication of za viruses in a biological sample or patient, for reducing the
amount of influenza viruses in a biological sample or patient, or for ng influenza in a
Also provided herein is use of the compounds bed herein for the
manufacture of a medicament for treating influenza in a patient, for reducing the amount of
influenza viruses in a biological sample or in a patient, or for inhibiting the replication of
influenza viruses in a biological sample or patient.
Also provided herein are the nds represented by Structural Formula (XX):
ZWNH\ 3/Y
R 1iRs
| \21
N/ /
or a pharmaceutically acceptable salt thereof. Without being bound to a particular , the
compounds of Structural Formula (XX) can be used for synthesizing the compounds of Formula
(I). The variables of Structural Formula (XX) are each and independently as defined herein; and
when Z1 is N, G is trityl (i.e., C(Ph)3 where Ph is phenyl), and when Z1 is CH, G is tosyl (Ts:
CH3C6H4S02) or trityl.
] The invention also provides methods of preparing a compound represented by
Structural Formula (I) or a pharmaceutically acceptable salt thereof. In one embodiment, the
methods employ the steps of:
/ N R1):R3 /
\ I 21
L2 R
N N B
i) reacting compound A: (A) (
with compound B : G )to form a
compound represented by Structural Formula (XX):
| \
/ ,z1
N 'l
G (XX); and
ii) deprotecting the G group of the compound of Structural Formula (XX) under suitable
conditions to form the nd of Structural Formula (I),wherein:
the variables of ural Formulae (I) and (XX), and nds (A) and (B) are
independently as defined herein; and
L2 is a halogen; and
when Z1 is N, G is trityl; when Z1 is CH, G is tosyl or trityl.
In yet another embodiment, the methods employ the steps of:
i) reacting compound K or L: i: (K) i: (L) with
compound D: NHz-Z3(C(R1R2R3))-Y to form a compound represented by Structural Formula
(XX):
H\ \ 3/Y
/N R
I \21
/ /
N “1‘
G (XX); and
ii) deprotecting the G group of the compound of Structural Formula (XX) under suitable
conditions to form the compound of Structural Formula (I),wherein:
the variables of Structural Formulae (I) and (XX), and compounds (L), (K), and (D) are
each and ndently as defined herein; and
when Z1 is N, G is trityl; when Z1 is CH, G is tosyl or trityl.
In yet another embodiment, the methods employ the steps of:
i) ng nd (G) with Compound (D):
G (G), NHz-Z3(C(R1R2R3))-Y (D),
under suitable conditions to form a compound represented by Structural Formula (XX):
ZWNH\ 3/Y
R1iv
N “1‘
G (XX); and
ii) deprotecting the G group of the nd of ural Formula (XX) under suitable
conditions to form the compound of Structural Formula (I),wherein:
the variables of Structural Formulae (I) and (XX), and Compounds (G) and (D) are each
and independently as defined herein;
L1 is a halogen; and
when Z1 is N, G is trityl; when Z1 is CH, G is tosyl or trityl.
BRIEF DESCRIPTION OF DRAWINGS
shows certain compounds of the ion.
DETAILED DECRIPTION OF THE INVENTION
] The compounds of the invention are as described in the claims. In some
embodiments, the compounds of the invention are represented by any one of Structural Formulae
(I) - (X), or pharmaceutically acceptable salts thereof, wherein the variables are each and
independently as described in any one of the claims. In some embodiments, the compounds of
the invention are represented by any chemical formulae depicted in Table l and or
pharmaceutically able salts thereof. In some embodiments, the compounds of the
invention are presented by Structural Formulae (I) - (X), or a pharmaceutically able salt
f, wherein the variables are each and independently as depicted in the chemical formulae
in Table l and
In one embodiment, the compounds of the invention are represented by Structural
Formula (I) or pharmaceutically acceptable salts thereof:
/N R1 ’l‘Rs2
X1 R
N N
wherein the values of the variables of ural Formula (I) are as described below.
The first set of values of the variables of Structural Formula (I) is as follows:
X1 is —F, —Cl, -CF3, —CN, or CH3. In one aspect, X1 is —F, —Cl, or -CF3. In r
aspect, X1 is —F or —Cl.
X2 is —H, —F, —Cl, or -CF3. In one aspect, X2 is —F, —Cl, or -CF3. In another aspect, X2 is—
F or —Cl.
Z1 is N or CH. In one aspect, Z1 is CH. In another aspect, Z1 is N.
Z2 is N or CR0. In one aspect, Z2 is N, C-F, or C-CN. In another aspect, Z2 is N.
Z3 is CH or N. In one aspect, Z3 is CH.
Y is —C(R4R5)-[C(R6R7)]n-Q or —C(R4)=C(R6)-Q.
R0 is —H, -F, or CN.
R1, R2, and R3 are each and ndently —CH3, -CH2F, -CF3, —C2H5, -CH2CH2F,
-CH2CF3; or optionally R2 and R3, or R1, R2 and R3, together with the carbon atom to which they
are attached, form a 3-10 membered carbocyclic ring (including bridged carbocyclic ring, such
as adamantly ring). In one aspect, R1, R2, and R3 are each and independently —CH3, or —C2H5, or
optionally R2 and R3, or R1, R2 and R3, together with the carbon atom to which they are attached,
form a 3-10 membered carbocyclic ring. In another aspect, each of R1, R2, and R3 is
independently —CH3, -CH2F, -CF3, or —C2H5; or R1 is —CH3, and R2 and R3 together with the
carbon atom to which they are attached form a 3-6 membered carbocyclic ring. In another
2012/049097
aspect, R1, R2, and R3 are each and independently —CH3, -CH2F, -CF3, or —C2H5. In yet another
aspect, R1, R2, and R3 are each and independently —CH3, or optionally R2 and R3, or R1, R2 and
R3 with the carbon atom to which they are attached, form a 3-6 membered carbocyclic
, together
ring. Specific examples of carbocyclic ring include cyclopropyl, utyl, cyclopentyl,
cylcohexyl, and bridged rings, such as adamantly group. In yet r aspect, R1, R2, and R3
are each and independently —CH3.
R4 and R5 are each and independently —H.
R6 and R7 are each and ndently —H, -OH, -CH3, or —CF3; or optionally, R5 and R7
together with the carbon atoms to which they are attached form a ropane ring. In one
aspect, R6 and R7 are each and independently —H, -OH, -CH3, or —CF3. In another aspect, R6 and
R7 are each and independently —H.
Each Q is independently —C(O)OR, -OH, -CH20H, -S(O)R’, -P(O)(OH)2, -S(O)2R’,
-S(O)2-NR’ ’R’”, or a 5-membered heterocycle selected from the group consisting of:,
z/NQJQE \EL “til E W
JQ, wherein IQ is —H,
-OH or -CH20H. Specific examples of the 5-membered heterocycles include:
MN?” “:0
”15%WE \Effi/EE/”E\~ ‘1?
\ l
OH. In one aspect,
each Q is ndently —C(O)OR, -OH, -CH20H, -S(O)2R’, -S(O)2-NR”R’ ’ ’, or a ered
N\ H
/ \N \o
/N E B
/ \
heterocycle selected from the group ting of: N
CH70H, o,
O‘\\N
E < E//N‘\\l EM
N/N . .
H and OH. In another aspect, each Q is independently —C(O)OH, -OH,
-CH20H, -S(O)2R’, -S(O)2-NR’ ’R’”, or a 5-membered heterocycle selected from the group
N N o
/§N N\O /\ \N
EVE/”\A/K/ EVE/hie”/N EV]
consisting of: N
CH70H, o, H ,and OH. In
another aspect, each Q is independently —C(O)OR, -OH, -S(O)2R’, or -S(O)2-NR’ ’R’ ”. In yet
another aspect, each Q is ndently —C(O)OH, -OH, -S(O)2R’, or -NR’ ’R”’.
R is —H or C1_4 alkyl. In one aspect, R is —H.
R’ is —OH, C1_4 alkyl, or -CH2C(O)OH. In one aspect, R’ is —OH or -CH2C(O)OH.
R” is —H or -CH3. In one aspect, R” is —H.
R’’ ’ is —H, a 3-6 membered carbocyclic ring, or C1_4 alkyl optionally tuted with one
or more substituents selected from the group consisting of halogen, -ORa and —C(O)ORa. In one
aspect, R’ ” is —H, a 3-6 ed carbocyclic ring, or optionally substituted C1_4 alkyl. In
another , R’ ’ ’ is —H or optionally substituted C1_4 alkyl.
R81 is —H or C1_4 alkyl. In one aspect, R81 is —H.
n is 0 or 1.
The second set of values of the variables of Structural Formula (I) is as follows:
X1 is —F or —Cl.
X2 is —F or —Cl.
Values of the other variables are each and independently as described above in the first
set of values of the variables of ural Formula (I).
The third set of values of the variables of ural Formula (I) is as follows:
X1 is —F or —Cl.
21 is CH.
Values of the other variables are each and independently as described above in the first
set of values of the variables of Structural Formula (I).
The fourth set of values of the variables of Structural Formula (I) is as follows:
X2 is —F or —Cl.
21 is CH.
Values of the other variables are each and independently as bed above in the first
set of values of the variables of Structural Formula (I).
The fifth set of values of the variables of Structural Formula (I) is as follows:
X1 is —F or —Cl.
Z1 is N
Values of the other variables are each and independently as described above in the first
set of values of the variables of Structural Formula (I).
The sixth set of values of the variables of Structural Formula (I) is as follows:
-1]-
X2 is —F or —Cl.
Z1 is N
Values of the other variables are each and independently as described above in the first
set of values of the variables of Structural Formula (I).
The seventh set of values of the variables of Structural Formula (I) is as follows:
X1 is —F or —Cl.
X2 is —F or —Cl.
21 is CH.
Values of the other variables are each and independently as described above in the first
set of values of the variables of Structural Formula (I).
The eighth set of values of the variables of ural a (I) is as follows:
X1 is —F or —Cl.
X2 is —F or —Cl.
Z1 is N.
Values of the other variables are each and independently as described above in the first
set of values of the variables of Structural Formula (I).
] The ninth set of values of the variables of Structural Formula (I) is as s:
X1 is —F or —Cl.
22 is N, C-F, or C—CN.
Values of the other variables are each and independently as described above in the first
set of values of the variables of Structural Formula (I).
The tenth set of values of the variables of Structural Formula (I) is as follows:
X2 is —F or —Cl
22 is N, C-F, or C—CN.
Values of the other variables are each and independently as bed above in the first
set of values of the variables of Structural Formula (I).
The eleventh set of values of the variables of Structural Formula (I) is as follows:
21 is CH.
22 is N, C-F, or C—CN.
Values of the other variables are each and independently as bed above in the first
set of values of the variables of Structural Formula (I).
The eleventh set of values of the variables of Structural a (I) is as follows:
Z1 is N.
22 is N, C-F, or C—CN.
Values of the other variables are each and independently as described above in the first
set of values of the variables of Structural Formula (I).
] The twelfth set of values of the variables of Structural a (I) is as follows:
X1 is —F or —Cl.
X2 is —F or —Cl.
Z1 is N.
22 is N, C-F, or C—CN.
Values of the other variables are each and independently as described above in the first
set of values of the les of Structural Formula (I).
] The thirteenth set of values of the variables of Structural Formula (I) is as
follows:
X1, X2, Z, and Z2 are each and independently as described above in any one of the first
through twelfth sets of values of the variables of Structural Formula (1).
Each of R1, R2, and R3 is independently —CH3, -CH2F, -CF3, or —C2H5; or R1 is —CH3, and
R2 and R3 together with the carbon atom to which they are attached form a 3-6 membered
carbocyclic ring.
Values of the other variables are each and independently as described above in the first
set of values of the variables of Structural Formula (I).
The fourteenth set of values of the variables of Structural Formula (I) is as
follows:
X1, X2, Zl, Zz, R1, R2, and R3 are each and independently as described above in any one
of the first through thirteenth sets of values of the variables of Structural Formula (I).
R6 and R7 are each and independently —H, -OH, -CH3, or —CF3.
Values of the other variables are each and independently as bed above in the first
set of values of the variables of Structural Formula (I).
The fifteenth set of values of the variables of Structural a (I) is as s:
X1, X2, Zl, Zz, R1, R2, R3, R6, and R7 are each and independently as described above in
any one of the first through fourteenth sets of values of the variables of Structural Formula (I).
Each Q is independently —C(O)OR, -OH, -CH20H, -S(O)2R’, -S(O)2-NR”R”’, or a 5-
a} A
membered heterocycle selected from the group consisting of: CH70H,
“\O O\
\BN/K i \D l
o, and OH.
Values of the other variables are each and independently as described above in the first
set of values of the variables of Structural Formula (I).
The sixteenth set of values of the variables of Structural a (I) is as s:
X1, X2, Zl, Zz, R1, R2, R3, R6, and R7 are each and independently as bed above in
any one of the first through fourteenth sets of values of the variables of Structural Formula (1).
Each Q independently is —C(O)OR, -OH, -S(O)2R’, or -S(O)2-NR’ ’R” ’.
Values of the other variables are each and independently as described above in the first
set of values of the variables of Structural a (I).
The seventeenth set of values of the variables of Structural Formula (I) is as
follows:
X1, X2, Zl, Zz, R1, R2, R3, R6, and R7 are each and independently as bed above in
any one of the first through fourteenth sets of values of the variables of Structural Formula (1).
Each Q independently is —C(O)OH, -OH, -S(O)2R’, or -S(O)2-NR”R’ ’ ’.
Values of the other variables are each and independently as described above in the first
set of values of the variables of Structural Formula (I).
The eighteenth set of values of the variables of Structural Formula (I) is as
follows:
X1, X2, Zl, Zz, R1, R2, R3, R6, and R7 are each and independently as described above in
any one of the first through fourteenth sets of values of the les of Structural Formula (1).
Each Q independently is —C(O)OH, -S(O)2R’, or -NR’ ’R” ’.
Values of the other variables are each and independently as described above in the first
set of values of the variables of Structural Formula (I).
The nineteenth set of values of the variables of ural Formula (I) is as
follows:
WO 19828
X1, X2, Zl, Zz, R1, R2, R3, R6, R7, and Q are each and independently as described above in
any one of the first through sixteenth sets of values of the variables of Structural Formula (I).
R’ is —OH or O)OH.
R” is —H.
R’’ ’ is —H, a 3-6 membered carbocyclic ring, or optionally substituted C1_4 alkyl.
Values of the other variables are each and independently as described above in the first
set of values of the variables of Structural Formula (I).
The twentieth set of values of the variables of Structural a (I) is as follows:
X1, X2, Zl, Zz, R1, R2, R3, R6, and R7 are each and independently as described above in
any one of the first through sixteenth sets of values of the variables of Structural Formula (1).
Each Q independently is —C(O)OH, -S(O)20H, -S(O)2CH2C(O)OH, -S(O)2-NH(C1_4
alkyl).
Values of the other variables are each and independently as bed above in the first
set of values of the variables of Structural Formula (I).
In another embodiment, the nds of the invention are represented by any one
of Structural Formulae (II) - (V), or pharmaceutically acceptable salts thereof:
X2 R5
R4 Q X2 R5
R4 Q
WW3: SLR?n NH
z KKK\ ”R7
Z R6 5
2 R6
/ N Rl+ N
R1 3
X1 X1
\ R2 \ R2
| \ \
Z1 l /Z1 / N/ /
N N N
H (11), H (111),
X2 R5 X2 R5
R4 R4
g \ NH 0 g \ NH floj—Q
Z Z
/N /N
R1 R1
1 R3 1 R3
\ R2 X
\ R2
| \ \
Z1 l 21
/ N/ /
N N/
H (IV), and N
H (V).
wherein values of the variables of Structural Formulae (II) - (V) are each and independently as
described above in any one of the first h twentieth sets of values of the variables of
ural a (I).
In another embodiment, the compounds of the invention are represented by any one
of the Structural Formulae (VI) - (X), or pharmaceutically acceptable salts thereof:
x2 R5
4 X2 R5
ZWNH R\kl—COZR WNHR4kl—CozR Z
/N R19\ 1
3 N
R R
X1 R2 x1
N/ / /
N N
(VI), H (VII),
x2 R5
WNHR4\l_ OH \ S(O)2R‘
/N N
R1 R1
R3 9\R3
X1 x1
R2 R2
\ \
l \ \
Z1 l 21
/ / ’
/ N
N N N
H (VIII), H (IX),
X2 R5
WNHR4‘kl—S(O)2NR"R'" z
N R19\R3
X1 R2
| \21
/ /
N N
H (X),
or a pharmaceutically acceptable salt thereof, wherein: R1, R2, and R3 are each and independently
—CH3, -CH2F, -CF3, —C2H5, -CH2CH2F, -CH2CF3; and ring P is 3-6 membered carbocyclic ring;
and wherein values of the other variables of Structural Formulae (VI) and (X) are each and
independently as described above in any one of the first through twentieth sets of values of the
variables of Structural Formula (I).
The twenty first set of values of the variables of Structural Formulae (II) - (X) is as
follows:
R is H;
R’ is —OH or -CH2C(O)OH.
R” is —H.
R’’ ’ is —H, a 3-6 membered carbocyclic ring, or optionally substituted C1_4 alkyl.
Values of the other variables are each and independently as described above.
It is noted that, for example, Structural Formulae (VI), (VIII), and (IX) can also be
shown as follows,
respectively:
In yet another embodiment, the nds of the invention are represented by any
one of Structural Formulae (I) — (X) or a pharmaceutically acceptable salt thereof, wherein
values of the variables are each and independently as shown in the compounds of Table l or FIG.
In yet another embodiment, the compounds of the invention are represented by any
one of the structural formulae depicted in Table l and or a pharmaceutically acceptable
salt thereof.
] As used herein, a reference to compound(s) of the invention (for example, the
compound(s) of ural Formula (I), or compound(s) of claim 1) will include
pharmaceutically acceptable salts thereof
The nds of the ion described herein can be prepared by any le
method known in the art. For example, they can be prepared in accordance with procedures
described in WO 95400, , , , W0
2010/011772, , and filed on June 17, 2010. For
example, the compounds shown in Table 1 and and the c compounds depicted
above can be prepared by any suitable method known in the art, for example, WO 95400,
, , , WP 2010/011772, ,
and 8988, and by the exemplary syntheses described below under
Exemplification.
The t invention provides s of preparing a compound represented by any
one of Structural Formulae (I) — (X). In one embodiment, the compounds of the invention can
be prepared as depicted in General Schemes 1-4. Any suitable condition(s) known in the art can
be employed in the ion for each step depicted in the schemes.
] In a specific embodiment, as shown in General Scheme 1, the methods comprise the
step of reacting Compound (A) with Compound (B) under suitable conditions to form a
nd of Structural Formula (XX), wherein each of L1 and L2 independently is a halogen (F,
Cl, Br, or I), G is trityl and the remaining variables of Compounds (A), (B) and Structural
Formula (XX) are each and independently as described above for Structural ae (I) — (X).
Typical examples for L1 and L2 are each and independently C1 or Br. The methods further
comprise the step of deprotecting the G group under suitable conditions to form the compounds
of Structural Formula (1). Any suitable condition(s) known in the art can be employed in the
invention for each step ed in the schemes. For example, any suitable condition described
in and for the coupling of a dioxaboraolan with a chloro-
pyrimidine can be employed for the reaction between Compounds (A) and (B). Specifically, the
reaction between compounds (A) and (B) can be performed in the presence of 3)4 or
Pd2(dba)3 (dba is dibenzylidene acetone). For e, the de-tritylation step can be performed
under an acidic condition (e.g., trifluoroacetic acid (TFA)) in the presence of, for example,
EthiH (Et is ethyl). Specific exemplary conditions are described in the Exemplification below
Optionally, the method further comprises the step of preparing Compound (A) by
reacting Compound (E) with Compound (D). Any suitable conditions know in the art can be
employed in this step, and Compounds (E) and (D) can be prepared by any suitable method
known in the art. c exemplary ions are described in the Exemplification below.
General Scheme 1
CR1RR2 3 )-Y —>
ZWNH\Zs/Y
N (D) R1+R3
L2 R2
\ \21
N/ N,
/N R3
| \
/ ,z1
N I}! (XX)
ZWNW/Y
R1+R3
| \
/ /
] In another specific embodiment, as shown in General Scheme 2, the methods
comprise the step of reacting Compound (G) with nd (D) under suitable conditions to
form a compound of Structural Formula (XX), wherein each of L1 and L2 independently is a
halogen (F, Cl, Br, or I), G is trityl, and the ing variables of Compounds (G), (D) and
Structural a (XX) are each and independently as described above for Structural Formulae
(I) — (X). Typical examples for L1 and L2 are each and independently Cl or Br. The methods
further comprise the step of deprotecting the G group under suitable conditions to form the
compounds of Structural Formula (1). Any suitable condition(s) known in the art can be
employed in the invention for each step depicted in the schemes. For example, any suitable
amination condition known in the art can be ed in the invention for the reaction of
nds (G) and (D), and any suitable condition for deprotecting a Tr group can be
employed in the invention for the ection step. For example, the amination step can be
performed in the presence of a base, such as NEt3 or N(iPr)2Et. For example, the de-tritylation
step can be performed under an acidic ion (e.g., roacetic acid (TFA)) in the presence
of, for example, EthiH (Et is ethyl). Additional specific exemplary conditions are described in
the Exemplification below
Optionally, the method further comprises the step of preparing Compound (G) by
ng Compound (E) with Compound (B). Any suitable conditions know in the art can be
employed in this step. For example, any suitable condition described in and
for the coupling of a dioxaboralan with a chloro-pyrimidine can be ed
for the on between Compounds (E) and (B). Specifically, the reaction between compounds
(E) and (B) can be performed in the presence of Pd(PPh3)4 or Pd2(dba)3 (dba is dibenzylidene
acetone). Specif1c exemplary conditions are described in the Exemplification below.
General Scheme 2
22 / L1 + \ —> _N
\ 1
/ I \
L 2 Z1
(E) hcl; / N’
(B) G
NH2_Z3((CR1R2R3)-
zWNW/Y
/N R1+R3
| \
/ ,21
N '1“ (XX)
WNH\3/Y z
/N R1LR3
| \
/ /
N N
In yet another specific embodiment, as shown in General Scheme 3, the methods
comprise the step of reacting Compound (K) with Compound (D) under suitable conditions to
form a compound of ural Formula (XX), wherein G is trityl and the remaining variables of
Compounds (K), (D) and Structural Formula (XX) are each and independently as described
above for Structural Formulae (I) — (X). The methods further comprise the step of deprotecting
the G group under suitable conditions to form the compounds of ural Formula (1). Any
le ion(s) known in the art can be employed in the invention for each step depicted in
the schemes. For example, any suitable reaction condition known in the art, for example, in WO
2005/095400 and for the coupling of an amine with a sulfinyl group can be
employed for the reaction of nds (K) with Compound (D). For example, nds
(D) and (K) can be reacted in the presence of a base, such as NEt3 or N(iPr)2(Et). For example,
the de-tritylation step can be performed under an acidic condition (e.g., trifluoroacetic acid
(TFA)) in the presence of, for example, EthiH (Et is ethyl). Additional specific exemplary
conditions are described in the Exemplification below
Optionally, the method further comprises the step of preparing Compound (K) by
oxidizing Compound (J), for example, by treatment with meta-chloroperbenzoic acid.
ally, the method r ses the step of preparing Compound (J) by
reacting nd (H) with Compound (B). Any suitable conditions know in the art can be
employed in this step. For example, any suitable condition described in and
for the coupling of a dioxaboraolan with a chloro-pyrimidine can be employed
for the reaction between Compounds (H) and (B). Specifically, the reaction between compounds
(H) and (B) can be performed in the presence of Pd(PPh3)4 or Pd2(dba)3 (dba is dibenzylidene
e). Specific ary conditions are described in the Exemplification below.
General Scheme 3
X H
O\B/O zis/\\_N/
22— S/ X1 X1
—> \
\ / + \ \
N | z1
/ / /
L2 N N
N N (J G )
(H) G
R2 \
X1 \
\ (CRRR)-Y3 1 2 3 1
\ I
/ ,2
/ ,21 (D) N N.
N '1‘ (XX) G ()
ZWNH‘fi/Y3
| \21
/ /
N N
In yet another specific embodiment, as shown in l Scheme 4, the methods
comprise the step of reacting Compound (L) with Compound (D) under suitable conditions to
form a compound of Structural Formula (XX), wherein G is trityl and the remaining variables of
Compounds (L), (D) and ural Formula (XX) are each and ndently as described
above for Structural Formulae (I) — (X). The methods further comprise the step of deprotecting
the G group under suitable conditions to form the compounds of Structural Formula (1). Any
le condition(s) known in the art can be employed in the invention for each step depicted in
the schemes. For example, any suitable reaction condition known in the art, for example, in W0
2005/095400 and for the coupling of an amine with a sulfonyl group can be
employed for the reaction of Compounds (L) with Compound (D). For example, Compounds
(D) and (L) can be d in the presence of a base, such as NEt3 or N(iPr)2(Et). For e,
the de-tritylation step can be performed under an acidic condition (e.g., trifluoroacetic acid
(TFA)) in the presence of, for example, EtgsiH (Et is ethyl). onal c exemplary
conditions are described in the Exemplification below
Optionally, the method further comprises the step of preparing Compound (L) by
oxidizing Compound (J), for example, by treatment with hloroperbenzoic acid.
Optionally, the method further comprises the step of preparing Compound (J) by
reacting Compound (H) with Compound (B). Reaction conditions are as described above for
General Scheme 3.
General Scheme 4
R2 \
\ NH2_Z3((CR1R2R3)-Y I /z1
I \
1 /
/ /Z (D) N N.
N I]! (XX) G
ZWNH\Z3/Y
R1+R3
| \
N N/
] Compounds (A)—(K) can be prepared by any suitable method known in the art.
Specific exemplary synthetic s of these compounds are described below in the
Exemplification. In one embodiment, Compounds (A), (G), (J), (K) and (L) can be prepared as
described in General Schemes 1-4.
In some ments, the present invention is directed to a compound
represented by Structural Formula (XX), wherein the variables of Structural Formula (XX) are
each and independently as defined in any one of the claims and G is trityl. Specific examples of
the compounds ented by Structural formula (XX) are shown below in the Exemplification.
Some specific examples include: Compounds 33, 83, 28a, 34a, 39a, 42a, 513, 57a, 80a, 84a,
9021, 101a, 119a, 144a, 148a, 154a, 159a, 170a, 176a, 182a, 184a, 191a, 197a, 207a, and 21821,
which are shown in the Exemplification below.
Definitions and General Terminology
For purposes of this invention, the chemical elements are identified in accordance
with the Periodic Table of the Elements, CAS version, Handbook of Chemistry and Physics, 75th
Ed. Additionally, general principles of organic chemistry are described in “Organic Chemistry”,
Thomas Sorrell, University Science Books, Sausolito: 1999, and “March’s Advanced Organic
Chemistry”, 5th Ed., Ed.: Smith, MB. and March, J ., John Wiley & Sons, New York: 2001, the
entire contents of which are hereby incorporated by reference.
] As described herein, compounds of the invention may optionally be substituted
with one or more substituents, such as rated generally below, or as exemplified by particular
classes, subclasses, and species of the invention. It will be appreciated that the phrase
“optionally substituted” is used interchangeably with the phrase “substituted or unsubstituted.” In
l, the term “substituted”, whether preceded by the term “optionally” or not, refers to the
ement of one or more hydrogen radicals in a given structure with the radical of a specified
substituent. Unless otherwise indicated, an optionally substituted group may have a substituent
at each substitutable position of the group. When more than one position in a given structure can
be substituted with more than one substituent ed from a specified group, the substituent
may be either the same or different at each position. When the term “optionally substituted”
precedes a list, said term refers to all of the subsequent substitutable groups in that list. If a
substituent radical or ure is not identified or defined as “optionally substituted”, the
substituent radical or structure is unsubstituted. For example, ifX is optionally tuted C1_
C3alkyl or ; X may be either optionally substituted C1-C3 alkyl or optionally tuted
. Likewise, if the term “optionally substituted” follows a list, said term also refers to all of
the substitutable groups in the prior list unless ise indicated. For example: ifX is C1-
C3alkyl or phenyl wherein X is optionally and independently substituted by JX, then both C1-
C3alkyl and phenyl may be ally substituted by JX.
The phrase "up to", as used herein, refers to zero or any integer number that is
equal or less than the number following the phrase. For example, "up to 3" means any one of 0,
1, 2, and 3. As described herein, a ed number range of atoms includes any integer therein.
For example, a group having from 1-4 atoms could have 1, 2, 3, or 4 atoms.
Selection of substituents and combinations of substituents oned by this
ion are those that result in the formation of stable or chemically le compounds. The
term “stable”, as used herein, refers to compounds that are not substantially altered when
ted to conditions to allow for their production, detection, and, specifically, their recovery,
purification, and use for one or more of the purposes sed herein. In some embodiments, a
stable nd or chemically feasible compound is one that is not substantially d when
kept at a temperature of 40°C or less, in the absence of moisture or other chemically reactive
conditions, for at least a week. Only those choices and combinations of substituents that result in
a stable structure are contemplated. Such choices and combinations will be apparent to those of
ordinary skill in the art and may be determined without undue experimentation.
The term “aliphatic” or atic group”, as used herein, means a straight-chain
(i.e., unbranched), or branched, hydrocarbon chain that is completely saturated or that contains
one or more units of unsaturation but is non-aromatic. Unless otherwise specified, aliphatic
groups contain 1-20 aliphatic carbon atoms. In some embodiments, aliphatic groups contain l-
aliphatic carbon atoms. In other embodiments, aliphatic groups contain 1-8 aliphatic carbon
atoms. In still other embodiments, aliphatic groups contain 1-6 aliphatic carbon atoms, and in
yet other embodiments, aliphatic groups n 1-4 aliphatic carbon atoms. Aliphatic groups
may be linear or branched, substituted or unsubstituted alkyl, alkenyl, or alkynyl groups.
Specific examples include, but are not limited to, methyl, ethyl, isopropyl, n-propyl, tyl,
vinyl, n-butenyl, ethynyl, and tert-butyl and acetylene.
The term “alkyl” as used herein means a saturated straight or branched chain
hydrocarbon. The term “alkenyl” as used herein means a straight or branched chain arbon
comprising one or more double bonds. The term “alkynyl” as used herein means a straight or
branched chain hydrocarbon comprising one or more triple bonds. Each of the “alkyl”, “alkenyl”
or “alkynyl” as used herein can be optionally substituted as set forth below. In some
embodiments, the “alkyl” is C1-C6 alkyl or C1-C4 alkyl. In some embodiments, the yl” is
C2-C6 alkenyl or C2-C4 l. In some embodiments, the “alkynyl” is C2-C6 alkynyl or C2-C4
alkynyl.
The term “cycloaliphatic” (or “carbocycle” or “carbocyclyl” or cyclic”)
refers to a omatic carbon only containing ring system which can be saturated or contains
one or more units of unsaturation, having three to fourteen ring carbon atoms. In some
embodiments, the number of carbon atoms is 3 to 10. In other embodiments, the number of
cmmnWmmm4mTInwuflmemmmmmmdwmmbmdkmmnmeESm6fme
term includes monocyclic, bicyclic or polycyclic, filSGd, spiro or bridged carbocyclic ring
systems. The term also includes polycyclic ring systems in which the carbocyclic ring can be
“fused” to one or more non-aromatic carbocyclic or heterocyclic rings or one or more aromatic
rings or combination thereof, wherein the radical or point of ment is on the carbocyclic
ring. “Fused” bicyclic ring systems se two rings which share two ing ring atoms.
Bridged ic group comprise two rings which share three or four adjacent ring atoms. Spiro
bicyclic ring systems share one ring atom. Examples of liphatic groups include, but are
not limited to, cycloalkyl and cycloalkenyl groups. Specific examples include, but are not
limited to, cyclohexyl, cyclopropenyl, and cyclobutyl.
The term ocycle” (or “heterocyclyl”, or “heterocyclic” or “non-aromatic
heterocycle”) as used herein refers to a non-aromatic ring system which can be saturated or
contain one or more units of unsaturation, haVing three to fourteen ring atoms in which one or
more ring carbons is replaced by a heteroatom such as, N, S, or O and each ring in the system
contains 3 to 7 members. In some embodiments, non-aromatic heterocyclic rings se up to
three heteroatoms selected from N, S and 0 within the ring. In other ments, non-aromatic
heterocyclic rings comprise up to two heteroatoms ed from N, S and 0 within the ring
system. In yet other embodiments, non-aromatic cyclic rings comprise up to two
heteroatoms selected from N and 0 within the ring system. The term includes monocyclic,
bicyclic or polycyclic filSGd, spiro or bridged heterocyclic ring systems. The term also includes
polycyclic ring systems in which the heterocyclic ring can be fused to one or more non-aromatic
carbocyclic or heterocyclic rings or one or more aromatic rings or combination thereof, wherein
the radical or point of attachment is on the heterocyclic ring. Examples of heterocycles include,
but are not limited to, piperidinyl, piperizinyl, pyrrolidinyl, pyrazolidinyl, imidazolidinyl,
azepanyl, diazepanyl, triazepanyl, azocanyl, diazocanyl, triazocanyl, oxazolidinyl,
olidinyl, thiazolidinyl, isothiazolidinyl, oxazocanyl, oxazepanyl, thiazepanyl, thiazocanyl,
benzimidazolonyl, ydrofilranyl, ydrofilranyl, tetrahydrothiophenyl,
tetrahydrothiophenyl, morpholino, including, for example, 3-morpholino, 4-morpholino, 2-
thiomorpholino, 3-thiomorpholino, 4-thiomorpholino, l-pyrrolidinyl, 2-pyrrolidinyl, 3-
pyrrolidinyl, l-tetrahydropiperazinyl, 2-tetrahydropiperazinyl, 3-tetrahydropiperazinyl, l-
piperidinyl, 2-piperidinyl, 3-piperidinyl, l-pyrazolinyl, 3-pyrazolinyl, 4-pyrazolinyl, 5-
pyrazolinyl, l-piperidinyl, 2-piperidinyl, 3-piperidinyl, ridinyl, 2-thiazolidinyl, 3-
thiazolidinyl, 4-thiazolidinyl, l-imidazolidinyl, 2-imidazolidinyl, 4-imidazolidinyl, 5-
imidazolidinyl, indolinyl, tetrahydroquinolinyl, tetrahydroisoquinolinyl, benzothiolanyl,
benzodithianyl, 3-(1-alkyl)-benzimidazolonyl, and l,3-dihydro-imidazolonyl.
The term “aryl” (or “aryl ring” or “aryl group”) used alone or as part of a larger
moiety as in “aralkyl”, oxy”, or “aryloxyalkyl” refers to carbocyclic aromatic ring systems.
The term “aryl” may be used interchangeably with the terms “aryl ring” or “aryl group”.
“Carbocyclic aromatic ring” groups have only carbon ring atoms (typically six to
fourteen) and include monocyclic aromatic rings such as phenyl and fused polycyclic ic
ring systems in which two or more carbocyclic aromatic rings are fused to one another.
es include l-naphthyl, 2-naphthyl, l-anthracyl and 2-anthracyl. Also included within the
scope of the term “carbocyclic aromatic ring” or “carbocyclic aromatic”, as it is used herein, is a
group in which an aromatic ring is “fused” to one or more non-aromatic rings (carbocyclic or
heterocyclic), such as in an indanyl, phthalimidyl, naphthimidyl, phenanthridinyl, or
tetrahydronaphthyl, where the radical or point of attachment is on the aromatic ring.
The terms “heteroaryl”, “heteroaromatic”, “heteroaryl ring”, “heteroaryl group”,
“aromatic heterocycle” or oaromatic group”, used alone or as part of a larger moiety as in
“heteroaralkyl” or “heteroarylalkoxy”, refer to heteroaromatic ring groups haVing five to
fourteen members, including monocyclic heteroaromatic rings and polycyclic ic rings in
which a monocyclic aromatic ring is fused to one or more other aromatic ring. Heteroaryl groups
have one or more ring heteroatoms. Also included within the scope of the term oaryl”, as
it is used herein, is a group in which an ic ring is “fiased” to one or more omatic
rings (carbocyclic or heterocyclic), where the radical or point of attachment is on the ic
ring. ic 6,5 heteroaromatic ring, as used herein, for example, is a six membered
heteroaromatic ring fused to a second five membered ring, wherein the radical or point of
attachment is on the six membered ring. Examples of heteroaryl groups include pyridyl,
pyrazinyl, pyrimidinyl, pyridazinyl, imidazolyl, pyrrolyl, lyl, triazolyl, tetrazolyl,
oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl or thiadiazolyl including, for example,
2-fi1ranyl, nyl, N—imidazolyl, 2-imidazolyl, 4-imidazolyl, 5-imidazolyl, 3-isoxazolyl, 4-
isoxazolyl, 5-isoxazolyl, 2-oxadiazolyl, 5-oxadiazolyl, olyl, 4-oxazolyl, olyl, 3-
pyrazolyl, 4-pyrazolyl, l-pyrrolyl, 2-pyrrolyl, olyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-
pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 2-thiazolyl, 4-thiazolyl, 5-thiazolyl, 2-
lyl, 5-triazolyl, olyl, 2-thienyl, 3-thienyl, carbazolyl, benzimidazolyl, benzothienyl,
benzofuranyl, indolyl, riazolyl, benzothiazolyl, benzoxazolyl, benzimidazolyl,
isoquinolinyl, l, isoindolyl, acridinyl, benzisoxazolyl, isothiazolyl, 1,2,3-oxadiazolyl,
1,2,5-oxadiazolyl, l,2,4-oxadiazolyl, l,2,3-triazolyl, l,2,3-thiadiazolyl, l,3,4-thiadiazolyl, 1,2,5-
thiadiazolyl, purinyl, nyl, l,3,5-triazinyl, quinolinyl (e.g., 2-quinolinyl, 3-quinolinyl, 4-
inyl), and isoquinolinyl (e.g., l-isoquinolinyl, 3-isoquinolinyl, or 4-isoquinolinyl).
As used herein, “cyclo”, “cyclic”, “cyclic group” or “cyclic moiety”, include
mono-, bi-, and clic ring systems including cycloaliphatic, heterocycloaliphatic, carbocyclic
aryl, or heteroaryl, each of which has been previously defined.
As used herein, a “bicyclic ring ” includes 8-12 (e.g., 9, 10, or 11)
membered structures that form two rings, wherein the two rings have at least one atom in
common (e. g., 2 atoms in common). Bicyclic ring systems include bicycloaliphatics (e. g.,
bicycloalkyl or bicycloalkenyl), bicycloheteroaliphatics, bicyclic carbocyclic aryls, and ic
heteroaryls.
As used , a “bridged bicyclic ring ” refers to a bicyclic
heterocycloalipahtic ring system or bicyclic cycloaliphatic ring system in which the rings are
bridged. Examples of bridged bicyclic ring systems include, but are not d to, adamantanyl,
norbomanyl, bicyclo[3.2.l]octyl, bicyclo[2.2.2]octyl, bicyclo[3.3.l]nonyl, bicyclo[3.2.3]nonyl,
bicyclo[2.2.2]octyl, l-aza-bicyclo[2.2.2]octyl, 3-aza-bicyclo[3.2.l]octyl, and 2,6-dioxatricyclo
[3.3.l.03,7]nonyl. A bridged bicyclic ring system can be optionally substituted with one
or more substituents such as alkyl (including carboxyalkyl, hydroxyalkyl, and haloalkyl such as
trifluoromethyl), alkenyl, alkynyl, cycloalkyl, (cycloalkyl)all<yl, heterocycloalkyl,
(heterocycloalkyl)alkyl, carbocyclic aryl, heteroaryl, alkoxy, cycloalkyloxy,
heterocycloalkyloxy, (carbocyclic xy, heteroaryloxy, aralkyloxy, heteroaralkyloxy, aroyl,
heteroaroyl, nitro, carboxy, alkoxycarbonyl, alkylcarbonyloxy, aminocarbonyl,
alkylcarbonylamino, cycloalkylcarbonylamino, (cycloalkylalkyl)carbonylamino, (carbocyclic
aryl)carbonylamino, aralkylcarbonylamino, ocycloalkyl)carbonylamino,
(heterocycloalkylalkyl)carbonylamino, arylcarbonylamino, heteroaralkylcarbonylamino,
cyano, halo, hydroxy, acyl, mercapto, alkylsulfanyl, sulfoxy, urea, thiourea, sulfamoyl,
sulfamide, oxo, or carbamoyl.
As used herein, “bridge” refers to a bond or an atom or an unbranched chain of
atoms connecting two different parts of a molecule. The two atoms that are connected through
the bridge (usually but not always, two tertiary carbon atoms) are denotated as “bridgeheads”.
As used , the term “spiro” refers to ring systems having one atom (usually a
quaternary carbon) as the only common atom between two rings.
The term “ring atom” is an atom such as C, N, O or S that is in the ring of an
aromatic group, cycloalkyl group or non-aromatic cyclic ring.
A “substitutable ring atom” in an ic group is a ring carbon or en atom
bonded to a hydrogen atom. The hydrogen can be optionally ed with a suitable substituent
group. Thus, the term “substitutable ring atom” does not include ring nitrogen or carbon atoms
which are shared when two rings are fused. In addition, “substitutable ring atom” does not
e ring carbon or nitrogen atoms when the structure depicts that they are already attached to
a moiety other than hydrogen.
The term “heteroatom” means one or more of oxygen, , nitrogen,
phosphorus, or n (including, any oxidized form of nitrogen, sulfur, phosphorus, or n;
the quatemized form of any basic en or; a substitutable nitrogen of a cyclic ring, for
example N (as in 3,4-dihydro-2H-pyrrolyl), NH (as in pyrrolidinyl) or NR+ (as in N-substituted
pyrrolidinyl)).
As used herein an optionally substituted aralkyl can be substituted on both the
alkyl and the aryl portion. Unless otherwise indicated as used herein optionally substituted
aralkyl is optionally substituted on the aryl portion.
In some embodiments, an aliphatic or heteroaliphatic group, or a non-aromatic
heterocyclic ring may contain one or more substituents. Suitable substituents on the saturated
carbon of an aliphatic or heteroaliphatic group, or of a heterocyclic ring are ed from those
listed above. Other suitable substitutents include those listed as suitable for the unsaturated
carbon of a carbocyclic aryl or heteroaryl group and additionally include the following: =0, =S,
=NNHR*, =NN(R*)2, =NNHC(O)R*, =NNHCOZ(C1_4 alkyl), =NNHSOZ(C1_4 alkyl), or =NR*,
wherein each R* is independently selected from hydrogen or an optionally substituted C1_6
aliphatic. Optional substituents on the aliphatic group of R* are selected from NHZ, NH(C1_4
aliphatic), N(C1_4 aliphatic)2, halogen, C1_4 tic, OH, O(C1_4 aliphatic), N02, CN, COZH,
COZ(C1_4 aliphatic), O(halo C1_4 aliphatic), or halo(C1_4 aliphatic), wherein each of the foregoing
C1_4aliphatic groups of R* is unsubstituted.
In some embodiments, optional substituents on the nitrogen of a heterocyclic ring
include those used above. Other suitable substituents include -R+, -N(R+)2, +, -COZR+,
-C(O)C(O)R+, -C(O)CH2C(O)R+, —sozR+, R+)2, -C(=S)N(R+)2, -C(=NH)—N(R+)2, or —
NR+SOZR+g wherein R+ is hydrogen, an optionally substituted C1_6 aliphatic, ally
substituted phenyl, optionally substituted -O(Ph), optionally substituted h), optionally
substituted -(CH2)1_2(Ph); optionally substituted (Ph); or an unsubstituted 5-6 membered
heteroaryl or heterocyclic ring haVing one to four atoms independently selected from
oxygen, nitrogen, or sulfur, or, two independent occurrences of R+, on the same substituent or
different substituents, taken together with the atom(s) to which each R+ group is bound, form a 5-
8-membered heterocyclyl, carbocyclic aryl, or heteroaryl ring or a 3membered cycloalkyl
ring, wherein said heteroaryl or heterocyclyl ring has 1-3 heteroatoms ndently selected
from nitrogen, oxygen, or sulfur. Optional substituents on the aliphatic group or the phenyl ring
of R+ are selected from NHZ, NH(C1_4 aliphatic), N(C1_4 aliphatic)2, halogen, C1_4 aliphatic, OH,
O(C1_4 aliphatic), N02, CN, COZH, COZ(C1_4 tic), O(halo C1_4 aliphatic), or halo(C1_4
aliphatic), wherein each of the foregoing C1_4aliphatic groups of R+ is unsubstituted.
In some ments, an aryl ding aralkyl, aralkoxy, aryloxyalkyl and the
like) or heteroaryl (including heteroaralkyl and arylalkoxy and the like) group may contain
one or more substituents. Suitable substituents on the unsaturated carbon atom of a carbocyclic
aryl or heteroaryl group are selected from those listed above. Other suitable substituents include:
halogen; -R°; -OR°; -SR°; l,2-methylenedioxy; l,2-ethylenedioxy; phenyl (Ph) optionally
substituted with R0; -O(Ph) optionally substituted with R0; -(CH2)1_2(Ph), optionally substituted
with R0; -CH=CH(Ph), optionally substituted with R0; -NOZ; -CN; -N(R°)2; -NR°C(O)R°;
-NR°C(S)R°; -NR°C(O)N(R°)2; -NR°C(S)N(R°)2; -NR°COZR°; -NR°NR°C(O)R°;
-NR°NR°C(O)N(R°)2; °COZR°; -C(O)C(O)R°; -C(O)CH2C(O)R°; -COZR°; -C(O)R°;
-C(S)R°; -C(O)N(R°)2; -C(S)N(R°)2; N(R°)2; -OC(O)R°; -C(O)N(OR°) RO; -C(NOR°)
RO; -S(O)2R°; -S(O)3R°; R°)2; -S(O)R°; -NR°SOZN(R°)2; -NR°SOZR°; )R°;
)—N(R°)2; or -(CH2)0_2NHC(O)R°; wherein each independent occurrence of R° is selected
from hydrogen, optionally substituted C1_6 aliphatic, an unsubstituted 5-6 membered heteroaryl
or heterocyclic ring, phenyl, -O(Ph), or -CH2(Ph), or, two independent occurrences of R°, on the
same tuent or different substituents, taken together with the atom(s) to which each R°
group is bound, form a 5membered heterocyclyl, yclic aryl, or aryl ring or a 3
membered cycloalkyl ring, wherein said heteroaryl or heterocyclyl ring has 1-3 heteroatoms
independently selected from nitrogen, oxygen, or sulfur. Optional substituents on the aliphatic
group of R° are ed from NHZ, NH(C1_4aliphatic), N(C1_4aliphatic)2, halogen, C1_4aliphatic,
OH, O(C1_4aliphatic), N02, CN, COZH, C02(C1_4aliphatic), O(haloC1_4 aliphatic), or haloC1_
4aliphatic, CHO, N(CO)(C1_4 aliphatic), C(O)N(C1_4 aliphatic), wherein each of the foregoing C1-
4aliphatic groups of RO is unsubstituted.
Non-aromatic nitrogen containing heterocyclic rings that are substituted on a ring
nitrogen and attached to the remainder of the molecule at a ring carbon atom are said to be N
substituted. For example, an N alkyl piperidinyl group is ed to the remainder of the
molecule at the two, three or four position of the piperidinyl ring and tuted at the ring
nitrogen with an alkyl group. Non-aromatic nitrogen containing heterocyclic rings such as
pyrazinyl that are substituted on a ring nitrogen and attached to the remainder of the molecule at
a second ring nitrogen atom are said to be N’ substituted-N—heterocycles. For example, an N’
acyl zinyl group is attached to the remainder of the molecule at one ring nitrogen atom
and substituted at the second ring nitrogen atom with an acyl group.
The term "unsaturated", as used herein, means that a moiety has one or more units
of unsaturation.
As detailed above, in some embodiments, two independent ences of R0 (or
R+, or any other variable similarly defined ), may be taken together with the atom(s) to
which each variable is bound to form a 5membered heterocyclyl, carbocyclic aryl, or
heteroaryl ring or a 3membered cycloalkyl ring. Exemplary rings that are formed when two
ndent occurrences of R0 (or Rl, or any other variable similarly defined ) are taken
together with the atom(s) to which each variable is bound include, but are not limited to the
following: a) two independent ences of R0 (or R+, or any other variable similarly defined
) that are bound to the same atom and are taken together with that atom to form a ring, for
example, , where both occurrences of R0 are taken together with the nitrogen atom to form
a piperidin- l -yl, piperazin-l-yl, or morpholinyl group; and b) two independent occurrences of
R0 (or R+, or any other variable similarly defined herein) that are bound to different atoms and
are taken together with both of those atoms to form a ring, for e where a phenyl group is
Ila/(ZOROORO substituted with two occurrences of OR0 these two occurrences of R0 are taken
together with the oxygen atoms to which they are bound to form a fused 6-membered oxygen
containing ring: £133 . It will be appreciated that a variety of other rings can be formed
when two independent occurrences of R0 (or RI, or any other variable similarly defined herein)
are taken together with the atom(s) to which each variable is bound and that the examples
detailed above are not ed to be limiting.
The term “hydroxyl”or “hydroxy” or “alcohol moiety” refers to —OH.
As used herein, an “alkoxycarbonyl,” which is encompassed by the term carboxy,
used alone or in connection with another group refers to a group such as (alkyl-O)-C(O)-.
] As used herein, a “carbonyl” refers to -C(O)-.
As used herein, an “oxo” refers to =0.
As used herein, the term “alkoxy”, or “alkylthio”, as used herein, refers to an
alkyl group, as previously defined, attached to the molecule through an oxygen (“alkoxy” e.g.,
—O—alkyl) or sulfur (“alkylthio” e.g., yl) atom.
As used herein, the terms “halogen”, “halo”, and “hal” mean F, Cl, Br, or I.
As used herein, the term “cyano” or “nitrile” refer to —CN or —CEN.
The terms “alkoxyalkyl”, “alkoxyalkenyl”, “alkoxyaliphatic”, and
“alkoxyalkoxy” mean alkyl, alkenyl, aliphatic or alkoxy, as the case may be, substituted with one
or more alkoxy groups.
The terms “haloalkyl”, “haloalkenyl”, “haloaliphatic”, and “haloalkoxy” mean
alkyl, alkenyl, aliphatic or alkoxy, as the case may be, tuted with one or more halogen
atoms. This term includes perfluorinated alkyl groups, such as —CF3 and -CF2CF3.
The terms “cyanoalkyl”, “cyanoalkenyl”, “cyanoaliphatic”, and “cyanoalkoxy”
mean alkyl, alkenyl, aliphatic or alkoxy, as the case may be, substituted with one or more cyano
groups. In some embodiments, the lkyl is (NC)-alkyl—.
The terms “aminoalkyl”, “aminoalkenyl”, “aminoaliphatic”, and “aminoalkoxy”
mean alkyl, l, aliphatic or alkoxy, as the case may be, substituted with one or more amino
groups, wherein the amino group is as defined above. In some embodiments, the liphatic
is a Cl-C6 tic group substituted with one or more -NH2 groups. In some embodiments, the
aminoalkyl refers to the structure (RXRY)N-alkyl-, n each of RX and RY independently is
as defined above. In some specific ments, the aminoalkyl is Cl-C6 alkyl substituted with
one or more —NH2 groups. In some ic embodiments, the aminoalkenyl is Cl-C6 alkenyl
substituted with one or more -NH2 groups. In some embodiments, the aminoalkoxy is -O(Cl-C6
alkyl) wherein the alkyl group is substituted with one or more -NH2 groups.
The terms “hydroxyalkyl”, “hydroxyaliphatic”, and “hydroxyalkoxy” mean alkyl,
tic or alkoxy, as the case may be, substituted with one or more —OH groups.
The terms “alkoxyalkyl”, “alkoxyaliphatic”, and “alkoxyalkoxy” mean alkyl,
aliphatic or alkoxy, as the case may be, substituted with one or more alkoxy groups. For
example, an “alkoxyalkyl” refers to an alkyl group such as (alkyl-O)-alkyl-, wherein alkyl is as
defined above.
The term “carboxyalkyl” means alkyl substituted with one or more carboxy
groups, wherein alkyl and carboxy are as defined above.
The term “protecting group” and ctive group” as used herein, are
hangeable and refer to an agent used to temporarily block one or more desired functional
groups in a compound with multiple reactive sites. In certain embodiments, a protecting group
has one or more, or specifically all, of the following characteristics: a) is added selectively to a
functional group in good yield to give a ted substrate that is b) stable to reactions occurring
at one or more of the other reactive sites; and c) is selectively removable in good yield by
reagents that do not attack the rated, deprotected functional group. As would be
understood by one skilled in the art, in some cases, the reagents do not attack other reactive
groups in the compound. In other cases, the reagents may also react with other reactive groups
in the compound. Examples of protecting groups are detailed in Greene, T. W., Wuts, P. G in
“Protective Groups in c Synthesis”, Third Edition, John Wiley & Sons, New York: 1999
(and other editions of the book), the entire contents of which are hereby incorporated by
reference. The term “nitrogen protecting group”, as used herein, refers to an agent used to
temporarily block one or more desired nitrogen reactive sites in a multifunctional compound.
Preferred nitrogen protecting groups also possess the characteristics exemplified for a protecting
group above, and certain exemplary nitrogen ting groups are also detailed in r 7 in
Greene, T.W., Wuts, P. G in “Protective Groups in Organic Synthesis”, Third n, John
Wiley & Sons, New York: 1999, the entire contents of which are hereby incorporated by
reference.
As used herein, the term “displaceable moiety” or “leaving group” refers to a
group that is associated with an aliphatic or ic group as defined herein and is t to
being ced by philic attack by a nucleophile.
Unless otherwise indicated, structures depicted herein are also meant to include
all isomeric (e. g., enantiomeric, diastereomeric, cis-trans, conformational, and rotational) forms
of the structure. For example, the R and S configurations for each tric center, (Z) and
(E) double bond isomers, and (Z) and (E) conformational isomers are ed in this invention,
unless only one of the isomers is drawn specifically. As would be understood to one skilled in
the art, a substituent can freely rotate around any rotatable bonds. For example, a substituent
/ N N /
| I
drawn as \ also represents \
] Therefore, single stereochemical isomers as well as enantiomeric, diastereomeric,
cis/trans, conformational, and rotational mixtures of the present compounds are within the scope
of the invention.
Unless otherwise indicated, all tautomeric forms of the compounds of the
invention are within the scope of the invention.
] Additionally, unless otherwise indicated, structures ed herein are also meant
to include compounds that differ only in the presence of one or more isotopically enriched atoms.
For example, compounds having the t structures except for the replacement of en
by deuterium or tritium, or the replacement of a carbon by a 13C- or 14C-enriched carbon are
within the scope of this ion. Such compounds are useful, for example, as analytical tools
or probes in biological assays. Such compounds, especially deuterium analogs, can also be
therapeutically useful.
The terms “a bond” and “absent” are used hangeably to indicate that a group
is absent.
The compounds of the invention are defined herein by their chemical structures
and/or chemical names. Where a compound is referred to by both a al structure and a
chemical name, and the chemical structure and chemical name conflict, the chemical structure is
determinative of the compound’s identity.
ceutically Accegtable Salts, es, Chlatrates, Prodrugs and Other Derivatives
] The compounds described herein can exist in free form, or, where appropriate, as
salts. Those salts that are pharmaceutically acceptable are of particular interest since they are
useful in administering the compounds described below for medical purposes. Salts that are not
pharmaceutically acceptable are useful in manufacturing processes, for isolation and purification
purposes, and in some instances, for use in separating stereoisomeric forms of the compounds of
the invention or intermediates thereof.
As used herein, the term "pharmaceutically acceptable salt" refers to salts of a
compound which are, within the scope of sound l judgment, suitable for use in contact
with the tissues of humans and lower animals t undue side effects, such as, toxicity,
irritation, allergic response and the like, and are commensurate with a reasonable t/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, l-l9, incorporated herein by reference. Pharmaceutically acceptable salts of the
compounds described herein e those derived from suitable inorganic and organic acids and
bases. These salts can be ed in situ during the final isolation and cation of the
compounds.
Where the compound bed herein contains a basic group, or a sufficiently
basic bioisostere, acid addition salts can be prepared by l) reacting the purified compound in its
free-base form with a suitable organic or inorganic acid and 2) isolating the salt thus formed. In
practice, acid addition salts might be a more convenient form for use and use of the salt amounts
to use of the free basic form.
Examples of pharmaceutically acceptable, non-toxic acid addition salts are salts
of an amino group formed with inorganic acids such as hydrochloric acid, hydrobromic acid,
phosphoric acid, ic acid and perchloric acid or with organic acids such as acetic acid,
oxalic acid, maleic acid, tartaric acid, citric acid, succinic acid or malonic acid or by using other
methods used in the art such as ion exchange. Other pharmaceutically able salts include
e, alginate, ascorbate, aspartate, benzenesulfonate, benzoate, bisulfate, borate, butyrate,
rate, camphorsulfonate, citrate, cyclopentanepropionate, digluconate, dodecylsulfate,
ethanesulfonate, formate, fumarate, eptonate, glycerophosphate, glycolate, gluconate,
glycolate, hemisulfate, heptanoate, hexanoate, hydrochloride, hydrobromide, hydroiodide, 2-
hydroxy-ethanesulfonate, lactobionate, lactate, laurate, lauryl sulfate, malate, maleate, malonate,
methanesulfonate, 2—naphthalenesulfonate, nicotinate, e, oleate, oxalate, palmitate,
palmoate, pectinate, persulfate, 3-phenylpropionate, phosphate, picrate, pivalate, propionate,
salicylate, stearate, succinate, sulfate, tartrate, thiocyanate, p-toluenesulfonate, undecanoate,
valerate salts, and the like.
Where the compound described herein contains a carboxy group or a ently
acidic bioisostere, base addition salts can be prepared by l) reacting the purified compound in its
acid form with a suitable c or inorganic base and 2) ing the salt thus formed. In
practice, use of the base addition salt might be more convenient and use of the salt form
inherently amounts to use of the free acid form. Salts derived from appropriate bases include
alkali metal (e. g., sodium, m, and potassium), alkaline earth metal (e. g., magnesium and
calcium), ammonium and N+(C1_4alkyl)4 salts. This invention also envisions the quatemization
of any basic nitrogen-containing groups of the compounds disclosed herein. Water or oil-soluble
or dispersible products may be obtained by such quatemization.
] Basic on salts include pharmaceutically acceptable metal and amine salts.
Suitable metal salts include the sodium, potassium, calcium, barium, zinc, magnesium, and
ium. The sodium and ium salts are usually preferred. Further ceutically
acceptable salts include, when appropriate, nontoxic ammonium, quaternary ammonium, and
amine cations formed using counterions such as , hydroxide, carboxylate, sulfate,
phosphate, nitrate, lower alkyl sulfonate and aryl sulfonate. Suitable inorganic base addition salts
are prepared from metal bases which include sodium hydride, sodium hydroxide, potassium
hydroxide, calcium hydroxide, aluminium ide, m hydroxide, magnesium hydroxide,
zinc hydroxide and the like. Suitable amine base addition salts are prepared from amines which
are frequently used in medicinal chemistry because of their low toxicity and acceptability for
medical use. Ammonia, ethylenediamine, N-methyl-glucamine, lysine, arginine, omithine,
choline, N, N’-dibenzylethylenediamine, chloroprocaine, dietanolamine, procaine, N-
benzylphenethylamine, diethylamine, piperazine, tris(hydroxymethyl)-aminomethane,
ethylammonium hydroxide, triethylamine, dibenzylamine, mine,
dehydroabietylamine, N—ethylpiperidine, benzylamine, tetramethylammonium,
tetraethylammonium, amine, dimethylamine, trimethylamine, ethylamine, basic amino
acids, dicyclohexylamine and the like.
Other acids and bases, while not in themselves pharmaceutically acceptable, may
be ed in the preparation of salts useful as intermediates in obtaining the compounds
described herein and their pharmaceutically acceptable acid or base addition salts.
It should be understood that this invention includes mixtures/combinations of
different pharmaceutically acceptable salts and also mixtures/combinations of compounds in free
form and pharmaceutically acceptable salts.
The compounds described herein can also exist as pharmaceutically acceptable
solvates (e.g., hydrates) and clathrates. As used herein, the term “pharmaceutically acceptable
solvate,” is a solvate formed from the ation of one or more pharmaceutically acceptable
solvent les to one of the compounds described herein. The term solvate es hydrates
(e.g., hemihydrate, monohydrate, dihydrate, trihydrate, tetrahydrate, and the like).
As used herein, the term te” means a nd described herein or a salt
thereof that fiarther es a iometric or non-stoichiometric amount of water bound by
non-covalent intermolecular .
As used , the term “clathrate” means a compound described herein or a salt
thereof in the form of a crystal lattice that contains spaces (e.g., channels) that have a guest
molecule (e.g., a solvent or water) trapped within.
In addition to the compounds bed herein, pharmaceutically acceptable
derivatives or prodrugs of these compounds may also be employed in compositions to treat or
prevent the herein identified disorders.
A “pharmaceutically acceptable derivative or prodrug” es any
pharmaceutically acceptable ester, salt of an ester or other tive or salt thereof of a
compound described herein which, upon administration to a recipient, is capable of providing,
either directly or indirectly, a compound described herein or an inhibitorily active metabolite or
residue thereof Particularly favoured derivatives or prodrugs are those that increase the
bioavailability of the nds when such compounds are administered to a patient (e.g., by
allowing an orally administered compound to be more readily absorbed into the blood) or which
enhance delivery of the parent compound to a biological compartment (e.g., the brain or
lymphatic system) relative to the parent species.
As used herein and unless otherwise indicated, the term “prodrug” means a
derivative of a compound that can yze, e, or otherwise react under biological
conditions (in vitro or in vivo) to provide a compound described herein. Prodrugs may become
active upon such reaction under biological conditions, or they may have ty in their
unreacted forms. Examples of prodrugs contemplated in this invention include, but are not
limited to, analogs or derivatives of compounds of the invention that comprise rolyzable
moieties such as biohydrolyzable amides, biohydrolyzable esters, biohydrolyzable carbamates,
biohydrolyzable carbonates, biohydrolyzable ureides, and biohydrolyzable phosphate analogues.
Other examples of prodrugs include derivatives of compounds described herein that comprise -
NO, -N02, -ONO, or -ON02 moieties. Prodrugs can typically be prepared using well-known
methods, such as those described by BURGER'S MEDICINAL CHEMISTRY AND DRUG
DISCOVERY (1995) 172-178, 949-982 (Manfred E. Wolff ed., 5th ed).
A “pharmaceutically acceptable derivative” is an adduct or derivative Which,
upon administration to a patient in need, is capable of providing, directly or indirectly, a
compound as otherwise described herein, or a metabolite or residue thereof. Examples of
pharmaceutically acceptable derivatives include, but are not limited to, esters and salts of such
esters. Pharmaceutically acceptable prodrugs of the compounds described herein include,
Without limitation, esters, amino acid esters, phosphate esters, metal salts and sulfonate esters.
Uses of Disclosed Comgounds
One aspect of the present invention is generally related to the use of the
nds described herein or pharmaceutically acceptable salts, or pharmaceutically
acceptable compositions comprising such a compound or a ceutically acceptable salt
thereof, for inhibiting the replication of influenza viruses in a biological sample or in a patient,
for ng the amount of influenza viruses ing viral titer) in a biological sample or in a
patient, and for treating influenza in a patient.
] In one embodiment, the present invention is generally related to the use of
compounds represented by any one of Structural Formulae (I) — (X), or pharmaceutically
acceptable salts thereof for any of the uses specified above:
In yet another embodiment, the present invention is directed to the use of any
compound selected from the compounds depicted in Table l or a ceutically able
salt thereof, for any of the uses described above.
] In some embodiments, the nds are ented by any one of Structural
Formulae (I) — (X), and the variables are each ndently as depicted in the compounds of
Table 1.
In yet another embodiment, the compounds described herein or pharmaceutically
acceptable salts thereof can be used to reduce viral titre in a biological sample (e.g. an infected
cell culture) or in humans (e.g. lung viral titre in a patient).
The terms “influenza virus mediated condition”, “influenza ion”, or
nza”, as used herein, are used hangeable to mean the disease caused by an infection
with an influenza virus.
] Influenza is an infectious disease that affects birds and mammals caused by
influenza s. Influenza viruses are RNA viruses of the family Orthomyxoviridae, which
comprises five genera: Influenzavirus A, zavirus B, Influenzavirus C, Isavirus and
Thogotovirus. Influenzavirus A genus has one species, influenza A virus which can be
ided into different serotypes based on the antibody response to these viruses: HlNl,
H2N2, H3N2, HSNl, H7N7, H1N2, H9N2, H7N2 H7N3 and H10N7. Influenzavirus B genus
has one species, influenza B virus. Influenza B almost exclusively infects humans and is less
common than influenza A. Influenzavirus C genus has one s, Influenzavirus C virus,
which s humans and pigs and can cause severe illness and local epidemics. However,
Influenzavirus C is less common than the other types and usually seems to cause mild disease in
children.
In some ments of the invention, influenza or influenza viruses are
associated with Influenzavirus A or B. In some embodiments of the invention, influenza or
influenza viruses are associated with Influenzavirus A. In some specific embodiments of the
invention, Influenzavirus A is HlNl, H2N2, H3N2 or H5Nl.
In humans, common ms of influenza are chills, fever, gitis, muscle
pains, severe headache, coughing, weakness, and l discomfort. In more serious cases,
influenza causes pneumonia, which can be fatal, particularly in young children and the elderly.
gh it is often confused with the common cold, influenza is a much more severe disease
and is caused by a different type of virus. Influenza can e nausea and vomiting, especially
in children, but these symptoms are more characteristic of the unrelated gastroenteritis, which is
sometimes called "stomach flu" or ur flu".
Symptoms of influenza can start quite suddenly one to two days after infection.
Usually the first symptoms are chills or a chilly sensation, but fever is also common early in the
infection, with body temperatures ranging from 38-39 c’C (approximately 100-103 c’F). Many
people are so ill that they are confined to bed for several days, with aches and pains throughout
their bodies, which are worse in their backs and legs. Symptoms of influenza may include: body
aches, especially joints and throat, extreme coldness and fever, fatigue, Headache, irritated
watering eyes, reddened eyes, skin (especially face), mouth, throat and nose, abdominal pain (in
children with influenza B). Symptoms of influenza are non-specific, overlapping with many
ens (“influenza-like illness). Usually, laboratory data is needed in order to confirm the
diagnosis.
The terms, “disease”, “disorder”, and “condition” may be used interchangeably
here to refer to an influenza virus mediated medical or pathological condition.
As used herein, the terms “subject” and “patient” are used interchangeably. The
terms “subject” and “patient” refer to an animal (e. g., a bird such as a chicken, quail or turkey, or
a mammal), cally a “mammal” including a non-primate (e. g., a cow, pig, horse, sheep,
rabbit, guinea pig, rat, cat, dog, and mouse) and a e (e. g., a , chimpanzee and a
human), and more specifically a human. In one embodiment, the t is a non-human animal
such as a farm animal (e.g., a horse, cow, pig or sheep), or a pet (e.g., a dog, cat, guinea pig or
rabbit). In a preferred embodiment, the t is a “human”.
The term “biological sample”, as used herein, includes, without limitation, cell
cultures or extracts thereof; biopsied material obtained from a mammal or extracts thereof;
blood, saliva, urine, feces, semen, tears, or other body fluids or ts thereof
] As used herein, “multiplicity of infection” or “MOI” is the ratio of infectious
agents (e. g. phage or virus) to ion targets (e. g. cell). For example, when referring to a group
of cells inoculated with infectious virus particles, the multiplicity of infection or MOI is the ratio
defined by the number of infectious virus particles deposited in a well divided by the number of
target cells present in that well.
As used herein the term “inhibition of the replication of influenza viruses”
includes both the reduction in the amount of virus replication (e.g. the reduction by at least 10 %)
and the complete arrest of virus replication (i.e., 100% reduction in the amount of virus
replication). In some embodiments, the replication of influenza viruses are inhibited by at least
50%, at least 65%, at least 75%, at least 85%, at least 90%, or at least 95%.
Influenza virus ation can be measured by any suitable method known in the
art. For example, influenza viral titre in a ical sample (e.g. an infected cell culture) or in
humans (e.g. lung viral titre in a patient) can be measured. More specifically, for cell based
assays, in each case cells are cultured in vitro, virus is added to the culture in the presence or
absence of a test agent, and after a suitable length of time a virus-dependent endpoint is
evaluated. For typical assays, the Madin-Darby canine kidney cells (MDCK) and the standard
tissue culture adapted influenza strain, to Rico/8/34 can be used. A first type of cell assay
that can be used in the invention depends on death of the infected target cells, a process called
cytopathic effect (CPE), where virus infection causes tion of the cell ces and
eventual lysis of the cell. In the first type of cell assay, a low fiaction of cells in the wells of a
microtiter plate are infected (typically 1/10 to l/ 1000), the virus is allowed to go through several
rounds of replication over 48-72 hours, then the amount of cell death is measured using a
decrease in cellular ATP content compared to uninfected controls. A second type of cell assay
that can be employed in the invention depends on the multiplication of virus-specific RNA
molecules in the infected cells, with RNA levels being ly measured using the branched-
chain DNA hybridization method (bDNA). In the second type of cell assay, a low number of
cells are initially infected in wells of a microtiter plate, the virus is allowed to replicate in the
infected cells and spread to additional rounds of cells, then the cells are lysed and viral RNA
content is measured. This assay is stopped early, usually after 18-36 hours, while all the target
cells are still viable. Viral RNA is quantitated by hybridization to specific oligonucleotide
probes fixed to wells of an assay plate, then amplification of the signal by hybridization with
additional probes linked to a reporter enzyme.
As used herein a “viral titer (or titre)” is a measure of virus concentration. Titer
testing can employ serial dilution to obtain approximate quantitative information from an
analytical procedure that inherently only evaluates as positive or negative. The titer corresponds
to the highest dilution factor that still yields a ve g; for example, positive readings in
the first 8 serial twofold dilutions translate into a titer of 1:256. A specific example is viral titer.
To ine the titer, l dilutions will be prepared, such as 101, 102, 10'3,...,10'8. The
lowest concentration of virus that still infects cells is the viral titer.
As used , the terms “treat”, “treatment” and “treating” refer to both
therapeutic and lactic treatments. For example, eutic treatments includes the
reduction or amelioration of the progression, ty and/or duration of influenza viruses
mediated conditions, or the amelioration of one or more symptoms (specifically, one or more
nible ms) of influenza viruses mediated conditions, resulting from the
administration of one or more therapies (e.g., one or more therapeutic agents such as a compound
or composition of the ion). In specific ments, the therapeutic treatment includes
the amelioration of at least one measurable physical parameter of an influenza virus mediated
condition. In other ments the therapeutic ent includes the inhibition of the
progression of an influenza virus mediated condition, either physically by, e.g., stabilization of a
discernible symptom, physiologically by, e. g., stabilization of a physical parameter, or both. In
other embodiments the therapeutic treatment includes the reduction or stabilization of influenza
viruses mediated infections. Antiviral drugs can be used in the community setting to treat people
who already have influenza to reduce the severity of symptoms and reduce the number of days
that they are sick.
The term “chemotherapy” refers to the use of tions, e. g. small molecule
drugs (rather than “vaccines”) for ng a er or disease.
The terms “prophylaxis” or ylactic use” and “prophylactic treatment” as
used herein, refer to any medical or public health procedure whose purpose is to prevent, rather
than treat or cure a disease. As used herein, the terms “prevent”, “prevention” and nting”
refer to the reduction in the risk of acquiring or developing a given condition, or the reduction or
tion of the recurrence or said condition in a subject who is not ill, but who has been or may
be near a person with the disease. The term “chemoprophylaxis” refers to the use of
medications, e.g. small molecule drugs (rather than “vaccines”) for the tion of a disorder
or disease.
As used herein, prophylactic use includes the use in situations in which an
ak has been detected, to prevent contagion or spread of the infection in places where a lot
of people that are at high risk of serious influenza complications live in close contact with each
other (e.g. in a hospital ward, daycare center, prison, nursing home, etc). It also includes the use
among populations who require protection from the influenza but who either do not get
protection after vaccination (e.g. due to weak immunse system), or when the vaccine is
unavailable to them, or when they cannot get the vaccine because of side effects. It also includes
use during the two weeks following vaccination, since during that time the vaccine is still
ineffective. Prophylactic use may also include ng a person who is not ill with the influenza
or not considered at high risk for complications, in order to reduce the chances of getting
infected with the influenza and passing it on to a isk person in close t with him (for
instance, healthcare workers, nursing home workers, etc).
According to the US CDC, an influenza “outbrea ” is defined
as a sudden
increase of acute febrile respiratory illness (AFRI) occurring within a 48 to 72 hour period, in a
group of people who are in close proximity to each other (e. g. in the same area of an assisted
living facility, in the same household, etc) over the normal background rate or when any subject
in the population being analyzed tests positive for influenza. One case of confirmed influenza by
any g method is considered an ak.
A “cluster” is defined as a group of three or more cases ofAFRI occurring within
a 48 to 72 hour period, in a group of people who are in close proximity to each other (e. g. in the
same area of an assisted living facility, in the same household, etc).
As used herein, the “index case”, ry case” or “patient zero” is the initial
patient in the population sample of an epidemiological investigation. When used in general to
refer to such patients in epidemiological investigations, the term is not capitalized. When the
term is used to refer to a specific person in place of that person's name within a report on a
specific investigation, the term is capitalized as Patient Zero. Often scientists search for the index
case to ine how the disease spread and what reservoir holds the disease in between
outbreaks. Note that the index case is the first t that indicates the existence of an outbreak.
Earlier cases may be found and are labeled primary, secondary, tertiary, etc.
In one embodiment, the s of the invention are a preventative or “pre-
emptive” measure to a patient, specifically a human, having a predisposition to cations
resulting from infection by an influenza virus. The term “pre-emptive” as used herein as for
example in pre-emptive use, “pre-emptively”, etc, is the prophylactic use in situations in which
” has been confirmed, in order to prevent the spread of infection
an “index case” or an “outbrea
in the rest of the community or population group.
In another ment, the methods of the invention are applied as a “pre-
emptive” e to members of a community or population group, specifically humans, in
order to prevent the spread of infection.
As used herein, an tive amount” refers to an amount sufficient to elicit the
desired biological response. In the present ion the d biological response is to inhibit
the replication of influenza virus, to reduce the amount of influenza viruses or to reduce or
ameliorate the severity, duration, progression, or onset of a influenza virus ion, prevent the
advancement of an influenza viruses infection, prevent the recurrence, development, onset or
progression of a symptom associated with an influenza virus infection, or enhance or improve
the prophylactic or therapeutic effect(s) of r therapy used against influenza infections.
The precise amount of compound administered to a subject will depend on the mode of
administration, the type and severity of the infection and on the characteristics of the subject,
such as general health, age, sex, body weight and nce to drugs. The skilled artisan will be
able to determine appropriate dosages depending on these and other s. When co-
administered with other anti viral agents, e.g., when co-administered with an anti-influenza
medication, an tive amount” of the second agent will depend on the type of drug used.
Suitable dosages are known for approved agents and can be adjusted by the skilled artisan
according to the condition of the t, the type of condition(s) being treated and the amount of
a compound described herein being used. In cases where no amount is expressly noted, an
effective amount should be assumed. For example, compounds described herein can be
administered to a subject in a dosage range from between approximately 0.01 to 100 mg/kg body
/day for therapeutic or prophylactic treatment.
Generally, dosage regimens can be selected in accordance with a y of
factors ing the disorder being treated and the severity of the disorder; the activity of the
specific compound employed; the specific composition employed; the age, body weight, general
, sex and diet of the patient; the time of administration, route of administration, and rate of
excretion of the specific compound employed; the renal and hepatic function of the subject; and
the particular compound or salt thereof employed, the duration of the treatment; drugs used in
combination or coincidental with the c compound employed, and like factors well known
in the medical arts. The skilled artisan can readily determine and prescribe the effective amount
of the compounds bed herein required to treat, to prevent, inhibit (fiJlly or lly) or
arrest the progress of the disease.
Dosages of the compounds described herein can range from between about 0.01
to about 100 mg/kg body weight/day, about 0.01 to about 50 mg/kg body weight/day, about 0.1
to about 50 mg/kg body weight/day, or about 1 to about 25 mg/kg body weight/day. It is
understood that the total amount per day can be administered in a single dose or can be
administered in multiple dosing, such as twice a day (e. g., every 12 hours), tree times a day (e. g.,
every 8 hours), or four times a day (e. g., every 6 hours).
For therapeutic treatment, the compounds described herein can be stered to
a patient within, for example, 48 hours (or within 40 hours, or less than 2 days, or less than 1.5
days, or within 24 hours) of onset of ms (e.g., nasal congestion, sore , cough, aches,
fatigue, headaches, and chills/sweats). The therapeutic treatment can last for any suitable
duration, for e, for 5 days, 7 days, 10 days, 14 days, etc. For prophylactic treatment
during a community outbreak, the nds described herein can be administered to a patient
within, for example, 2 days of onset of symptoms in the index case, and can be continued for any
suitable duration, for example, for 7 days, 10 days, 14 days, 20 days, 28 days, 35 days, 42 days,
etc.
Various types of administration methods can be employed in the invention, and
are described in detail below under the section entitled “Administration Methods.”
Combination Theragy
An effective amount can be achieved in the method or pharmaceutical
composition of the invention employing a compound of the invention (including a
ceutically acceptable salt or solvate (e.g., hydrate)) alone or in combination with an
additional suitable therapeutic agent, for example, an antiviral agent or a e. When
“combination therapy” is employed, an effective amount can be achieved using a first amount of
a compound of the invention and a second amount of an additional suitable therapeutic agent
(e. g. an antiviral agent or vaccine).
In another embodiment of this invention, a compound of the ion and the
additional therapeutic agent, are each administered in an effective amount (i.e., each in an
amount which would be therapeutically effective if administered . In r embodiment,
a compound of the ion and the additional therapeutic agent, are each administered in an
amount which alone does not provide a therapeutic effect (a sub-therapeutic dose). In yet
another ment, a compound of the invention can be administered in an ive amount,
while the additional therapeutic agent is administered in a sub-therapeutic dose. In still another
embodiment, a compound of the invention can be stered in a sub-therapeutic dose, while
the additional therapeutic agent, for example, a suitable cancer-therapeutic agent is administered
in an ive amount.
As used herein, the terms “in combination” or “co-administration” can be used
interchangeably to refer to the use of more than one therapy (e.g., one or more prophylactic
and/or therapeutic ). The use of the terms does not restrict the order in which therapies
(e.g., prophylactic and/or therapeutic agents) are administered to a subject.
nistration encompasses administration of the first and second amounts of
the compounds of the coadministration in an ially simultaneous manner, such as in a single
pharmaceutical composition, for example, capsule or tablet having a fixed ratio of first and
second amounts, or in multiple, separate capsules or tablets for each. In addition, such
coadministration also encompasses use of each compound in a sequential manner in either order.
In one embodiment, the present invention is directed to methods of combination
therapy for inhibiting Flu viruses replication in biological samples or patients, or for treating or
preventing Influenza virus infections in patients using the compounds or pharmaceutical
compositions of the invention. Accordingly, ceutical compositions of the invention also
include those comprising an inhibitor of Flu Virus replication of this invention in combination
with an iral compound exhibiting anti-Influenza Virus activity.
] Methods of use of the compounds and compositions of the invention also include
combination of chemotherapy with a compound or composition of the invention, or with a
combination of a compound or composition of this invention with r anti-Viral agent and
vaccination with a Flu vaccine.
When co-administration involves the separate administration of the first amount
of a compound of the invention and a second amount of an additional therapeutic agent, the
compounds are administered sufficiently close in time to have the desired therapeutic effect. For
example, the period of time between each administration which can result in the desired
therapeutic effect, can range from minutes to hours and can be determined taking into account
the properties of each compound such as y, solubility, bioavailability, plasma half-life and
kinetic profile. For example, a compound of the invention and the second therapeutic agent can
be administered in any order within about 24 hours of each other, within about 16 hours of each
other, within about 8 hours of each other, within about 4 hours of each other, within about 1 hour
of each other or within about 30 minutes of each other.
More, specifically, a first therapy (e.g., a prophylactic or therapeutic agent such as
a compound of the invention) can be administered prior to (e. g., 5 minutes, 15 minutes, 30
minutes, 45 minutes, 1 hour, 2 hours, 4 hours, 6 hours, 12 hours, 24 hours, 48 hours, 72 hours, 96
hours, 1 week, 2 weeks, 3 weeks, 4 weeks, 5 weeks, 6 weeks, 8 weeks, or 12 weeks ),
concomitantly with, or subsequent to (e. g., 5 minutes, 15 minutes, 30 minutes, 45 s, 1
hour, 2 hours, 4 hours, 6 hours, 12 hours, 24 hours, 48 hours, 72 hours, 96 hours, 1 week, 2
weeks, 3 weeks, 4 weeks, 5 weeks, 6 weeks, 8 weeks, or 12 weeks after) the administration of a
second therapy (e.g., a prophylactic or therapeutic agent such as an anti-cancer agent) to a
] It is understood that the method of co-administration of a first amount of a
compound of the invention and a second amount of an additional therapeutic agent can result in
an enhanced or synergistic therapeutic effect, wherein the combined effect is greater than the
ve effect that would result from separate stration of the first amount of a compound
of the invention and the second amount of an additional therapeutic agent.
As used , the term “synergistic” refers to a combination of a compound of
the invention and another y (e.g., a prophylactic or therapeutic agent), which is more
effective than the additive effects of the ies. A synergistic effect of a combination of
therapies (e.g., a combination of prophylactic or therapeutic agents) can permit the use of lower
dosages of one or more of the therapies and/or less frequent administration of said therapies to a
subject. The ability to utilize lower dosages of a therapy (e.g., a prophylactic or therapeutic
agent) and/or to administer said therapy less frequently can reduce the toxicity associated with
the administration of said y to a subject without reducing the efficacy of said y in the
prevention, management or ent of a disorder. In addition, a synergistic effect can result in
improved cy of agents in the prevention, management or treatment of a disorder. Finally, a
synergistic effect of a combination of therapies (e.g., a combination of lactic or
eutic agents) may avoid or reduce adverse or unwanted side effects associated with the use
of either therapy alone.
When the combination y using the compounds of the present invention is in
combination with a Flu vaccine, both therapeutic agents can be administered so that the period of
time between each administration can be longer (e.g. days, weeks or months).
The presence of a synergistic effect can be determined using suitable s for
ing drug interaction. Suitable methods include, for example, the Sigmoid-Emax equation
(Holford, N.H.G. and Scheiner, L.B., Clin. Pharmacokinet. 6: 429-453 (1981)), the equation of
Loewe additiVity (Loewe, S. and Muischnek, H., Arch. Exp. Pathol Pharmacol. 114: 313-326
(1926)) and the median-effect on (Chou, TC. and Talalay, P., Adv. Enzyme Regul. 22: 27-
55 (1984)). Each equation ed to above can be applied with experimental data to generate a
corresponding graph to aid in assessing the s of the drug combination. The corresponding
graphs associated with the equations referred to above are the concentration-effect curve,
isobologram curve and combination index curve, respectively.
Specific examples that can be co-administered with a compound described herein include
neuraminidase inhibitors, such as oseltamiVir (Tamiflu®) and Vir (Rlenza®), Viral ion
l (M2 protein) blockers, such as dine (Symmetrel®) and rimantadine
(Flumadine®), and antiviral drugs described in WC 2003/015798, including T-705 under
development by Toyama Chemical of Japan. (See also Ruruta et al., Antiviral Reasearch, 82: 95-
102 (2009), “T-705 iravir) and related compounds: Novel broad-spectrum inhibitors of
RNA viral infections”) In some embodiments, the compounds described herein can be co-
administered with a traditional influenza vaccine. In some embodiments, the compounds
described herein can be co-administered with Zanamivir. In some embodiments, the compounds
2012/049097
described herein can be co-administered with oseltamivir. In some embodiments, the
compounds described herein can be co-administered with T-705.
Pharmaceutical Comgositions
The nds described herein can be formulated into pharmaceutical
compositions that fiarther comprise a pharmaceutically acceptable carrier, diluent, adjuvant or
vehicle. In one embodiment, the t invention relates to a pharmaceutical composition
comprising a nd of the invention described above, and a pharmaceutically able
carrier, diluent, adjuvant or vehicle. In one embodiment, the present invention is a
pharmaceutical ition comprising an effective amount of a compound of the present
ion or a pharmaceutically acceptable salt thereof and a pharmaceutically able carrier,
diluent, adjuvant or e. Pharmaceutically acceptable rs include, for e,
pharmaceutical diluents, excipients or carriers suitably selected with respect to the intended form
of administration, and consistent with conventional pharmaceutical practices.
An “effective amount” includes a “therapeutically effective amount” and a
“prophylactically effective amount”. The term “therapeutically effective ” refers to an
amount effective in treating and/or ameliorating an influenza virus infection in a patient infected
with influenza. The term “prophylactically effective amount” refers to an amount effective in
preventing and/or substantially lessening the chances or the size of influenza virus infection
outbreak. Specific examples of effective amounts are bed above in the n ed
Uses of Disclosed Compounds.
A pharmaceutically acceptable carrier may n inert ingredients which do not
unduly inhibit the biological activity of the compounds. The pharmaceutically acceptable
carriers should be biocompatible, e.g., non-toxic, non-inflammatory, non-immunogenic or
devoid of other red reactions or side-effects upon the administration to a subject. Standard
pharmaceutical formulation techniques can be employed.
The pharmaceutically acceptable carrier, adjuvant, or vehicle, as used herein,
includes any and all solvents, diluents, or other liquid vehicle, dispersion or suspension aids,
surface active agents, isotonic agents, thickening or emulsifying agents, preservatives, solid
binders, lubricants and the like, as suited to the particular dosage form desired. Remington's
Pharmaceutical Sciences, Sixteenth Edition, E. W. Martin (Mack Publishing Co., , Pa.,
1980) discloses various carriers used in formulating pharmaceutically acceptable compositions
and known techniques for the preparation thereof. Except insofar as any conventional carrier
2012/049097
medium is incompatible with the compounds described herein, such as by producing any
undesirable biological effect or otherwise cting in a deleterious manner with any other
component(s) of the pharmaceutically acceptable composition, its use is contemplated to be
within the scope of this invention. As used herein, the phrase “side effects” encompasses
unwanted and adverse effects of a therapy (e. g., a prophylactic or therapeutic agent). Side
effects are always unwanted, but unwanted effects are not necessarily adverse. An e effect
from a therapy (e.g., lactic or therapeutic agent) might be harmful or uncomfortable or
risky. Side effects include, but are not limited to fever, chills, lethargy, intestinal toxicities
(including gastric and intestinal ulcerations and erosions), nausea, vomiting, neurotoxicities,
nephrotoxicities, renal toxicities (including such conditions as papillary necrosis and chronic
interstitial tis), hepatic toxicities (including elevated serum liver enzyme levels),
myelotoxicities (including leukopenia, myelosuppression, thrombocytopenia and anemia), dry
mouth, metallic taste, gation of gestation, weakness, somnolence, pain (including muscle
pain, bone pain and headache), hair loss, asthenia, dizziness, extra-pyramidal symptoms,
akathisia, cardiovascular disturbances and sexual dysfunction.
] Some examples of materials which can serve as pharmaceutically acceptable
carriers include, but are not limited to, ion exchangers, alumina, aluminum stearate, lecithin,
serum proteins (such as human serum albumin), buffer substances (such as twin 80, phosphates,
glycine, sorbic acid, or potassium sorbate), partial glyceride mixtures of ted vegetable fatty
acids, water, salts or electrolytes (such as protamine sulfate, um hydrogen phosphate,
potassium hydrogen phosphate, sodium chloride, or zinc salts), colloidal silica, magnesium
trisilicate, polyvinyl pyrrolidone, polyacrylates, waxes, polyethylene-polyoxypropylene-block
polymers, methylcellulose, hydroxypropyl methylcellulose, wool fat, sugars such as lactose,
glucose and sucrose; es such as corn starch and potato starch; cellulose and its tives
such as sodium ymethyl cellulose, ethyl cellulose and cellulose e; powdered
tragacanth; malt; gelatin; talc; ents such as cocoa butter and suppository waxes; oils such
as peanut oil, cottonseed oil; er oil; sesame oil; olive oil; corn oil and soybean oil;
glycols; such a propylene glycol or polyethylene glycol; esters such as ethyl oleate and ethyl
laurate; agar; buffering agents such as magnesium hydroxide and aluminum hydroxide; alginic
acid; pyrogen-free water; isotonic saline; Ringer's solution; ethyl alcohol, and phosphate buffer
solutions, as well as other non-toxic ible lubricants such as sodium lauryl sulfate and
magnesium stearate, as well as coloring agents, ing agents, coating agents, sweetening,
ng and perfilming agents, preservatives and antioxidants can also be present in the
composition, according to the judgment of the formulator.
Administration Methods
The nds and pharmaceutically acceptable compositions described above
can be administered to humans and other animals orally, ly, erally, istemally,
intravaginally, intraperitoneally, topically (as by powders, ointments, or drops), bucally, as an
oral or nasal spray, or the like, depending on the severity of the infection being treated.
] Liquid dosage forms for oral administration include, but are not limited to,
ceutically acceptable emulsions, microemulsions, solutions, suspensions, syrups and
elixirs. In addition to the active compounds, the liquid dosage forms may contain inert diluents
ly used in the art such as, for example, water or other solvents, solubilizing agents and
emulsifiers such as ethyl alcohol, isopropyl alcohol, ethyl carbonate, ethyl acetate, benzyl
alcohol, benzyl benzoate, propylene glycol, l,3-butylene glycol, dimethylformamide, oils (in
particular, cottonseed, groundnut, corn, germ, olive, castor, and sesame oils), glycerol,
tetrahydrofurfilryl alcohol, polyethylene glycols and fatty acid esters of sorbitan, and mixtures
thereof. Besides inert diluents, the oral compositions can also include adjuvants such as wetting
agents, emulsifying and suspending , ning, flavoring, and perfilming agents.
Inj ectable preparations, for example, sterile inj ectable aqueous or oleaginous
suspensions may be formulated according to the known art using suitable dispersing or wetting
agents and suspending agents. The sterile injectable preparation may also be a sterile injectable
solution, suspension or emulsion in a nontoxic parenterally acceptable diluent or solvent, for
example, as a solution in l,3-butanediol. Among the acceptable vehicles and solvents that may
be employed are water, Ringer's on, U.S.P. and isotonic sodium chloride solution. In
addition, e, fixed oils are conventionally employed as a solvent or suspending medium. For
this purpose any bland fixed oil can be employed including synthetic mono- or diglycerides. In
addition, fatty acids such as oleic acid are used in the preparation of injectables.
] The inj ectable formulations can be sterilized, for example, by filtration through a
bacterial-retaining filter, or by incorporating sterilizing agents in the form of sterile solid
compositions which can be dissolved or dispersed in e water or other sterile inj ectable
medium prior to use.
In order to prolong the effect of a compound bed herein, it is often desirable
WO 19828
to slow the tion of the compound from subcutaneous or intramuscular injection. This may
be accomplished by the use of a liquid suspension of crystalline or amorphous material with poor
water solubility. The rate of absorption of the compound then depends upon its rate of
dissolution that, in turn, may depend upon crystal size and lline form. Alternatively,
delayed absorption of a parenterally administered compound form is accomplished by dissolving
or suspending the compound in an oil vehicle. Inj ectable depot forms are made by forming
microencapsule matrices of the compound in radable polymers such as polylactide-
polyglycolide. Depending upon the ratio of compound to polymer and the nature of the
particular polymer employed, the rate of compound release can be controlled. Examples of other
biodegradable polymers include poly(orthoesters) and poly(anhydrides). Depot injectable
formulations are also prepared by entrapping the compound in liposomes or microemulsions that
are compatible with body tissues.
Compositions for rectal or vaginal administration are specifically suppositories
which can be prepared by mixing the compounds described herein with suitable non-irritating
excipients or carriers such as cocoa , polyethylene glycol or a suppository wax which are
solid at ambient temperature but liquid at body temperature and therefore melt in the rectum or
l cavity and release the active compound.
Solid dosage forms for oral administration include capsules, tablets, pills,
powders, and granules. In such solid dosage forms, the active compound is mixed with at least
one inert, pharmaceutically acceptable excipient or carrier such as sodium citrate or dicalcium
ate and/or a) fillers or extenders such as starches, lactose, sucrose, glucose, mannitol, and
silicic acid, b) binders such as, for example, carboxymethylcellulose, alginates, gelatin,
polyvinylpyrrolidinone, e, and acacia, c) humectants such as glycerol, d) egrating
agents such as agar--agar, calcium carbonate, potato or tapioca starch, c acid, certain
silicates, and sodium carbonate, e) solution retarding agents such as paraffin, f) absorption
rators such as quaternary ammonium compounds, g) wetting agents such as, for example,
cetyl l and glycerol monostearate, h) absorbents such as kaolin and bentonite clay, and i)
lubricants such as talc, calcium stearate, magnesium stearate, solid polyethylene s, sodium
lauryl sulfate, and mixtures f. In the case of capsules, s and pills, the dosage form
may also comprise buffering agents.
Solid compositions of a similar type may also be employed as fillers in soft and
hard-filled gelatin capsules using such excipients as lactose or milk sugar as well as high
molecular weight polyethylene glycols and the like. The solid dosage forms of tablets, dragees,
es, pills, and granules can be prepared with gs and shells such as enteric coatings
and other coatings well known in the pharmaceutical formulating art. They may optionally
contain opacifying agents and can also be of a composition that they release the active
ingredient(s) only, or preferentially, in a certain part of the intestinal tract, optionally, in a
delayed manner. Examples of embedding compositions that can be used include polymeric
substances and waxes. Solid compositions of a similar type may also be employed as fillers in
soft and hard-filled gelatin capsules using such excipients as lactose or milk sugar as well as high
molecular weight polethylene glycols and the like.
The active compounds can also be in microencapsulated form with one or more
excipients as noted above. The solid dosage forms of tablets, dragees, capsules, pills, and
granules can be prepared with coatings and shells such as enteric coatings, release controlling
coatings and other coatings well known in the pharmaceutical formulating art. In such solid
dosage forms the active compound may be admixed with at least one inert diluent such as
sucrose, lactose or starch. Such dosage forms may also comprise, as is normal practice,
additional substances other than inert diluents, e.g., tableting lubricants and other tableting aids
such a magnesium stearate and microcrystalline cellulose. In the case of capsules, s and
pills, the dosage forms may also comprise buffering . They may ally contain
opacifying agents and can also be of a composition that they release the active ient(s) only,
or entially, in a certain part of the inal tract, optionally, in a delayed manner.
es of embedding compositions that can be used include polymeric substances and waxes.
Dosage forms for topical or transdermal administration of a compound described
herein include ointments, pastes, creams, lotions, gels, powders, solutions, sprays, inhalants or
patches. The active component is admixed under sterile conditions with a pharmaceutically
able carrier and any needed preservatives or buffers as may be ed. Ophthalmic
ation, eardrops, and eye drops are also contemplated as being within the scope of this
invention. Additionally, the t invention contemplates the use of transdermal patches,
which have the added advantage of providing controlled delivery of a compound to the body.
Such dosage forms can be made by dissolving or dispensing the compound in the proper
medium. Absorption ers can also be used to increase the flux of the compound across the
skin. The rate can be controlled by either providing a rate lling membrane or by
dispersing the compound in a polymer matrix or gel.
The compositions bed herein may be administered orally, parenterally, by
inhalation spray, topically, rectally, nasally, buccally, vaginally or via an implanted reservoir.
The term "parenteral" as used herein includes, but is not limited to, subcutaneous, intravenous,
uscular, intra-articular, intra-synovial, intrastemal, intrathecal, intrahepatic, intralesional
and intracranial injection or infilsion ques. Specifically, the itions are administered
, intraperitoneally or intravenously.
Sterile injectable forms of the itions described herein may be aqueous or
oleaginous suspension. These suspensions may be formulated according to techniques known in
the art using suitable dispersing or wetting agents and suspending agents. The sterile injectable
preparation may also be a sterile inj ectable on or suspension in a non-toxic parenterally-
acceptable diluent or solvent, for example as a solution in l,3-butanediol. Among the acceptable
vehicles and solvents that may be employed are water, Ringer's solution and isotonic sodium
chloride solution. In on, sterile, fixed oils are conventionally employed as a solvent or
suspending medium. For this e, any bland fixed oil may be ed including synthetic
mono- or di-glycerides. Fatty acids, such as oleic acid and its glyceride derivatives are useful in
the preparation of inj ectables, as are natural pharmaceutically-acceptable oils, such as olive oil or
castor oil, especially in their polyoxyethylated versions. These oil solutions or suspensions may
also contain a long-chain alcohol diluent or dispersant, such as carboxymethyl cellulose or
similar sing agents which are commonly used in the formulation of pharmaceutically
able dosage forms including emulsions and suspensions. Other commonly used
surfactants, such as Tweens, Spans and other emulsifying agents or bioavailability enhancers
which are ly used in the manufacture of pharmaceutically acceptable solid, liquid, or
other dosage forms may also be used for the purposes of formulation.
The ceutical compositions described herein may be orally administered in
any orally acceptable dosage form including, but not limited to, capsules, tablets, aqueous
suspensions or solutions. In the case of tablets for oral use, rs commonly used e, but
are not limited to, lactose and corn starch. Lubricating agents, such as magnesium stearate, are
also typically added. For oral stration in a capsule form, useful diluents include lactose
and dried cornstarch. When aqueous suspensions are required for oral use, the active ingredient
is combined with emulsifying and suspending agents. If desired, certain sweetening, flavoring or
coloring agents may also be added.
Alternatively, the pharmaceutical compositions described herein may be
administered in the form of suppositories for rectal administration. These can be prepared by
mixing the agent with a suitable non-irritating excipient which is solid at room temperature but
liquid at rectal temperature and therefore will melt in the rectum to release the drug. Such
materials include, but are not limited to, cocoa butter, beeswax and polyethylene glycols.
] The pharmaceutical compositions described herein may also be stered
lly, especially when the target of treatment includes areas or organs readily accessible by
topical application, including diseases of the eye, the skin, or the lower intestinal tract. Suitable
topical formulations are y prepared for each of these areas or organs.
Topical application for the lower intestinal tract can be effected in a rectal
itory formulation (see above) or in a suitable enema formulation. Topically-transdermal
patches may also be used.
] For l applications, the pharmaceutical compositions may be formulated in a
suitable nt containing the active component suspended or dissolved in one or more
carriers. Carriers for topical administration of the compounds of this invention include, but are
not limited to, mineral oil, liquid atum, white petrolatum, propylene glycol,
yethylene, polyoxypropylene compound, emulsifying wax and water. Alternatively, the
pharmaceutical compositions can be formulated in a suitable lotion or cream containing the
active components suspended or dissolved in one or more pharmaceutically acceptable carriers.
le carriers include, but are not limited to, mineral oil, sorbitan monostearate, polysorbate
60, cetyl esters wax, cetearyl alcohol, 2 octyldodecanol, benzyl alcohol and water.
] For ophthalmic use, the pharmaceutical compositions may be formulated as
micronized suspensions in isotonic, pH adjusted sterile saline, or, specifically, as solutions in
isotonic, pH adjusted sterile saline, either with or without a preservative such as benzylalkonium
chloride. Alternatively, for ophthalmic uses, the ceutical compositions may be
formulated in an nt such as petrolatum.
The ceutical compositions may also be administered by nasal aerosol or
inhalation. Such compositions are prepared according to techniques well-known in the art of
pharmaceutical formulation and may be ed as solutions in saline, employing benzyl
alcohol or other suitable preservatives, absorption promoters to enhance bioavailability,
fluorocarbons, and/or other conventional solubilizing or sing agents.
The compounds for use in the methods of the invention can be formulated in unit
dosage form. The term “unit dosage form” refers to physically discrete units suitable as unitary
dosage for subjects undergoing treatment, with each unit containing a predetermined quantity of
active material calculated to produce the desired therapeutic effect, optionally in association with
a suitable pharmaceutical carrier. The unit dosage form can be for a single daily dose or one of
multiple daily doses (e.g., about 1 to 4 or more times per day). When multiple daily doses are
used, the unit dosage form can be the same or different for each dose.
EXEMPLIFICATION
e 1: Synthesis of ds of the Invention
The compounds disclosed herein can be prepared by any suitble method known in
the art, for example, , , , ,
WP 2010/011772, , and filed on June 17, 2010. For
example, the compounds shown in Table 1 and can be ed by any suitble method
known in the art, for example, , WO 84557, , WO
2010/011756, WP 11772, , and , and by the
exemplary syntheses described below. Generally, the compounds of the invention can be
prepared as shown in those syntheses optionally with any desired appropriate modification.
ology for Synthesis and Characterization of Coonands
Syntheses of certain exemplary compounds of the invention are described below.
NMR and Mass oscopy data of certain specific compounds are summarized in Table 1. As
used herein the term RT (min) refers to the LCMS retention time, in minutes, associated with the
compound.
Pre n 0 Com oandl
Synthetic Scheme 1
\ NWNH
N NH2 \
/ CI
\\\\ WOH-
I \ >\ :L /I \ 1‘ O
N N
\ 1a 2a 0 OH N N 3a
H 1
(a) Na2C03, THF, CH3CN, microwave, 135 0C; (b) NaOMe, MeOH, 0 0C;
Formation of (R)(2-(5-chlor0t0syl-1H-pyrrolo[2,3-b]pyridinyl)—5-fluoro-pyrimidin-
4-ylamin0)—4,4-dimethylpentan0ic acid (3a)
To a on of 5-chloro(5-fiuoromethylsulfinyl-pyrimidinyl)(p-
tolylsulfonyl)pyrrolo[2,3-b]pyridine, 1a, (0.100 g, 0.215 mmol: prepared in a similar manner as
described below for Compound 25a in scheme 4) and amino-4,4-dimethylpentanoic acid,
2a, (0.031 g, 0.215 mmol) in tetrahydrofuran (1.66 mL) was added freshly ground N32C03
(0.068 g, 0.645 mmol) followed by acetonitrile (0.331 mL). The reaction mixture was heated to
135 0C for 30 minutes in a microwave reactor. The reaction mixture was slowly poured into 75
mL of 1N HCl. The pH of final solution was adjusted to 1. The aqueous was extracted with
EtOAc (3 X 5 mL), washed with brine, dried over Na2S04 and filtered to obtain a crude solid
residue. The crude residue was purified via silica gel chromatography (0-10% MeOH-CHzClz
gradient) ed 78 mg of the desired product 3a: LCMS Gradient 10-90%, 0.1% formic acid,
s, C18/ACN, RT = 3.9 minutes (M+H) 546.22.
(R)(2-(5-Chloro-lH—pyrrolo [2,3-b]pyridinyl)—5-flu0r0pyrimidinylamin0)—4,4-
dimethylpentanoic acid (1)
To a cold (0 oC) solution of (R)(2-(5-chlorotosyl-1H—pyrrolo[2,3-b]pyridinyl)
fiuoro-pyrimidinylamino)-4,4-dimethylpentanoic acid, 3a, (0.08 g, 0.14 mmol) in MeOH (2.6
mL) was added sodium methanolate (2.91 mL of 25 %w/v, 13.46 mmol). The reaction was
stirred at room temperature for 30 min and then quenched by dilution into aqueous saturated
ammonium de solution. The MeOH was ated in vacuo and the resulting aqueous
phase diluted with EtOAc, then extracted with EtOAc (3X). The organics were dried (Na2S04),
filtered and concentrated in vacuo. Recrystalization from MeOH ed 52 mg of the desired
product 1 as a white powder: 1H NMR (d6-DMSO) 8 12.25 (s, 1H): 12.0 (bs, 1H): 8.8 (s, 1H):
8.3 (s, 1H): 8.25 (s, 1H); 8.1 (s, 1H): 7.45 (d, 1H); 4.75 (t, 1H); 2.5 (m, 2H), 1.0 (s, 9H); LCMS
Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, RT = 2.06 s (M+H) 392.21.
WO 19828
Pre arationo Com 0unds2 43 89 and 90
Synthetic Scheme 2
2a 5a 6a \N'N 7a
FgiNH O 0/ d iNH O 0/ e iNH O
H OH
—» M —» M
F F F
/ 7\ / 7\ / 7\
I \ I \ I \
\ \ \
N N N N N N
‘ H H
8a 9a 2
(a) AcCl, MeOH, reflux; (b) 2,4-dichlor0flu0r0pyrimidine, Eth, EtOH, THF, 55 0C; (c)
-fluor0(p-tolylsulf0nyl)-3 -(4,4,5 ,5 -tetramethyl- 1 ,3 ,2-dioxaborolanyl)pyrrolo [2,3 -
b]pyridine, 7a, Pd2(dba)3, XPhos, K3P04, 2-MeTHF, H20, 115 0C; (d) HCl, e,
acetonitrile, 65°C; (e) LiOH, THF, H20, 50 0C.
Formation of (R)methoxy-4,4-dimethyloxopentanaminium chloride (5a)
(R)amino-4,4-dimethylpentanoic acid, 2a, was dissolved in ol (1.4 L). The
solution was cooled in an ice bath and acetyl chloride (67.0 mL, 947.0 mmol) was added
dropwise (maintaining the temperature below 10 CC). The reaction mixture was heated to 65 °C
and stirred at that temperature for 3 h. The on mixture was cooled to room temperature and
then flushed with e to remove volatiles. The crude material was used without r
purification: 1H NMR (400 MHz, MeOH-d4) 5 3.75 (s, 3H), 3.41 (t, 1H), 2.88 (dd, 1H), 2.64 —
2.46 (m, 1H), 1.04 (s, 9H).
Formation of (R)-methyl 3-((2-chlorofluoropyrimidinyl)amino)—4,4-
dimethylpentanoate (6a)
(R)methoxy-4,4-dimethyl0x0pentanaminium chloride, 5a, (37 g, 189 mmol) was
dissolved in a mixture of tetrahydrofuran (667 mL) and EtOH (74 mL). The solution was cooled
in an ice bath. 2,4-dichlorofluoro-pyrimidine (35 g, 208 mmol) was added, followed by the
dropwise addition of triethylamine (85 mL, 606 mmol). The reaction mixture was heated at 55
CC for 17 h. The reaction mixture was then cooled to room temperature after which water (625
mL) and dichloromethane (625 mL) were added. The phases were separated and the aqueous
layer was washed with dichloromethane (625 mL). The organic layers were combined and
washed with brine. The solvents were d and the residue was purified on silica gel
(EtOAc/Hexanes): LCMS Gradient 10-90%, 0.1% formic acid, 5min, C18/ACN, RT = 3.10
minutes (M+H) 291.02.
Formation of (R)—methyl 3-((5-fluoro(5-fluorotosyl-1H-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amino)-4,4-dimethylpentanoate (8a)
A 2-MeTHF (253 mL)/water (56 mL) on of 5-fiuoro(p-tolylsulfonyl)(4,4,5,5-
tetramethyl-l,3,2-dioxaborolanyl)pyrrolo[2,3-b]pyridine, 7a, (24.3 g, 58.3 mmol), methyl (R)-
methyl chlorofiuoropyrimidinyl)amino)-4,4-dimethylpentanoate, 6a, (14.1 g, 48.6
mmol) and K3P04 (30.9 g, 146 mmol) was purged with nitrogen for 0.75 h. XPhos (2.8 g, 5.8
mmol) and a)3 (1.1 g, 1.2 mmol) were added and the reaction e was d at 115
0C in a sealed tube for 2 h. The reaction mixture was cooled and the aqueous phase was
removed. The organic phase was filtered through a pad of Celite and the mixture was
concentrated to dryness. The residue was purified on silica gel (EA/Hex) to provide the desired
product, 8a, (23.2g): LCMS Gradient , 0.1% formic acid, 5min, C18/ACN, RT = 2.18
minutes (M+H) 245.28.
Formation of (R)—methyl 3-((5-fluoro(5—fluoro-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin-
4-yl)amino)-4,4-dimethylpentanoate (9a)
To a solution of (R)—methyl 3-((5-fiuoro(5-fiuorotosyl-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amino)-4,4-dimethylpentanoate, 8a, (21 g, 39 mmol) in acetonitrile (157 mL)
was added 4M HCl in dioxane (174 mL). The reaction mixture was heated to 65 CC for 4 h. The
solution was cooled to room temperature and the solvents were removed under d pressure.
The mixture was flushed with acetonitrile after which dichloromethane (100mL), sat. aqueous
NaHC03 (355 mL) and ethyl acetate (400 mL) were added. The phases were separated and the
aqueous layer washed with ethyl acetate (500 mL). The organic layers were combined, dried
(Na2S04), filtered and concentrated in vacuo. The resulting residue was purified on silica gel
(EtOAc/Hexanes) to provide the desired t, 9a, (12.1 g): LCMS Gradient 10-90%, 0.1%
formic acid, 5min, C18/ACN, RT = 2.26 minutes (M+H) 391.05.
Formation (R)—3-((5-fluoro(5-fluoro-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)amino)—4,4-dimethylpentanoic acid (2)
(R)-Methyl 3-((5-fluoro(5-fluoro-1H—pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)amino)-4,4-dimethylpentanoate, 9a, (18.4 g, 47.1 mmol) was ved in tetrahydrofuran
(275 mL) and aqueous 1M LiOH (141 mL) was added. The mixture was heated to 50 0C for 3.5
h. The reaction mixture was cooled to room temperature and 180 mL of water was added. The
tetrahydrofuran was removed under reduced pressure and the residue was then flushed twice
with hexanes. Diethylether (60 mL) was added and the layers separated. The pH of the aqueous
layer was ed to 6 with 1N HCl. Ethyl acetate (540 mL) was added, the layers were
ted and the aqueous layer was extracted with ethyl acetate (720 mL), then again with ethyl
acetate (300 mL). The organic layers were combined, washed with brine (100 mL) and dried
(Na2S04). The solvents were removed while flushing with heptanes to e the desired
product, 2, (17.5g): 1H NMR (400 MHz, DMSO-dg) 5 12.23 (s, 1H), 12.03 (s, 1H), 8.68 — 8.52
(m, 1H), 8.27 (s, 1H), 8.19 (d, J: 2.5 Hz, 1H), 8.13 (d, J: 4.0 Hz, 1H), 7.39 (d, J: 9.2 Hz, 1H),
4.83 (t, J: 9.3 Hz, 1H), 2.71 — 2.51 (m, 2H), 0.97 (s, 9H); LCMS Gradient 10-90%, 0.1% formic
acid, 5min, C18/ACN, RT = 1.96 s (M+H) 377.02.
The following analog was prepared in a similar fashion as the procedure described above for
Compound 2:
N ,
\ NL>—OH
fr?4\ N S“
N N
(R)—3-((5-flu0r0(5-(triflu0r0methyl)—lH-pyrrolo [2,3-b]pyridinyl)pyrimidin
yl)amin0)-4,4-dimethylpentan0ic acid (43)
1H NMR (300 MHz, CDC13) 5 11.16 (s, 1H), 8.70 (s, 1H), 8.04 (d, J: 3.2 Hz, 1H), 7.96 (s,
1H), 7.87 (s, 1H), 5.02 (d, J: 8.1 Hz, 1H), 4.80 (t, J: 9.6 Hz, 1H), 2.81 (d, J: 9.9 Hz, 1H),
2.34 (t, J: 11.3 Hz, 1H), 1.14 (s, 9H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes,
C18/ACN, Retention Time = 2.49 minutes (M+H) 426.47.
N/N|\-I_>—OHFyo
\Nse
/ I\7\
(R)—3-((5-flu0r0(5-methyl-lH-pyrrolo [2,3-b] pyridinyl)pyrimidinyl)amin0)-4,4-
dimethylpentanoic acid (90)
1H NMR (300 MHz, CDC13) 8 8.68 (s, 1H), 8.43 (d, J: 14.1 Hz, 2H), 8.23 (s, 1H), 4.96 (s,
2H), 2.88 — 2.55 (m, 4H), 2.45 (s, 3H), 1.00 (s, 9H); LCMS Gradient 10-90%, 0.1% formic acid,
minutes, C18/ACN, Retention Time = 1.8 minutes (M+H) 372.5.
N NH
/ OH
/I \ 7\
N N
(R)—3-((2-(5-cyan0-lH-pyrrolo [2,3-b] nyl)flu0r0pyrimidinyl)amin0)-4,4-
dimethylpentanoic acid (89)
LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, N, Retention Time = 2.1
minutes (M+H) 383.38.
F870NH OH
F/ [RN/fl
\ I\
(S)((5-flu0r0(5-flu0r0-lH-pyrrolo [2,3-b] pyridinyl)pyrimidinyl)amin0)-4,4-
dimethylpentanoic acid (4)
LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, N, Retention Time = 1.93
minutes (M+H) 376.21.
a, O
N\ N/ NH OH
I \
N N
(S)((2-(5-chlor0-lH-pyrrolo ] pyridinyl)-S-fluor0pyrimidinyl)amino)—4,4-
dimethylpentanoic acid (3)
LCMS nt 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.06
minutes (M+H) 392.21.
Pre aration 0 Com ound 69
Synthetic Scheme 3
H2N OH a N/ngH 0
~— b
§_/ _, OH —, NH ——
N o —> no
7\ >\’N¢}_/ >Lh/lF/< F."o
NflNUfiko, ”0L
g Ffjji/N 5 OH I]???\N c o
N o /
, 7‘\ F/
Ff, 7\ 7’ \IN\
19a 69 21a
(a) 2,4-dichlorofluoropyrimidine, Eth, DMF; (b) oxalyl chloride, DMF, DMSO, Eth,
CHZCIZ; (c) [(lPrO)2PO]2CH2, NaH, THF; (d) 5-fluoro(p-tolylsulfonyl)—3-(4,4,5,5-
tetramethyl-l,3,2-dioxaborolanyl)pyrrolo[2,3-b]pyridine, 7a, Pd2(dba)3, XPhos, K3PO4, 2-
MeTHF, H20, 100 0C; (e) NaOMe, MeOH; (f) H2, Pd/C, MeOH, 40 psi; (g)
trimethylsilyliodide, CHzClz.
Formation of (S)((2-chloro-S-flu0r0pyrimidinyl)amino)—3,3-dimethylbutan01 (14a)
To a mixture of -amino-3,3-dimethyl-butanol (5.0 g, 42.7 mmol) and 2,4-
dichlorofluoro-pyrimidine (5.7 g, 42.7 mmol) in DMF (50 mL) was added triethylamine (7.1
mL, 51.2 mmol). After 90 minutes, the reaction was diluted into aqueous saturated NH4C1
solution and extracted twice with EtOAc. The combined organic phases were washed twice with
brine, dried (MgSO4), filtered and concentrated in vacuo. The crude residue was purified Via
silica gel chromatography (0-10% MeOH/CH2C12 gradient) to afford 6.7 g of the desired
t, 1, as a sticky solid: LCMS Gradient , 0.1% formic acid, 5 minutes, N,
RT = 2.48 minutes (M+H) 248.32.
Formation of (S)((2-chlor0flu0r0pyrimidinyl)amin0)—3,3-dimethylbutanal (153)
To a cold (-78 oC) solution of oxalyl chloride (1.06 mL, 12.11 mmol) in dichloromethane
(10 mL) was added yl sulfoxide (1.43 mL, 20.18 mmol) se. After stirring the
mixture for 10 minutes at -78 0C, a suspension of (2S)[(2-chlorofiuoro-pyrimidin
yl)amino]-3,3-dimethyl-butanol, 143, (1.0 g, 4.04 mmol) in dichloromethane (10 mL) was
added. The reaction mixture was stirred for 30 minutes at -78 CC and triethylamine (3.38 mL,
24.22 mmol) was added. The mixture was slowly warmed to 0 0C over 2hours. The mixture was
diluted into aqueous saturated NaHC03 solution and extracted twice with EtOAc. The ed
organic phases were dried (MgSO4), filtered and concentrated in vacuo. The crude residue was
purified Via silica gel chromatography (0-15% EtOAc/CHzClz gradient) to afford 680 mg of the
desired product as a white solid.
Formation of (R,E)—diis0pr0pyl (3-((2—chlor0flu0r0pyrimidinyl)amino)—4,4—
dimethylpent—1-enyl)ph0sph0nate (163)
To a cold (0 oC) suspension of sodium hydride (0.163 g, 7.083 mmol) i n THF (8.0 mL)
was added 2-(diisopropoxyphosphorylmethyl(isopropoxy)phosphoryl)—oxypropane (1.220 g,
3.542 mmol). After 15 minutes, a solution of (S)—2-((2-chlorofluoropyrimidinyl)amino)-
3,3-dimethylbutanal, 1521, (0.580 g, 2.361 mmol) in THF (4 mL) was added dropwise. The
on mixture was slowly warmed to room temperature over 1 hour. The mixture was diluted
into aqueous saturated NH4Cl solution and extracted with EtOAc. The organic phase was dried
(MgSO4), filtered and concentrated in vacuo. The resulting crude residue was purified Via silica
gel chromatography (10-50% EtOAc/CH2C12 gradient) to afford 810 mg of the desired product:
LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, RT = 3.28 minutes (M+H)
408.36.
Formation of (R,E)—diis0pr0pyl (3-((5-flu0r0(5—flu0r0t0syl-1H-pyrr010[2,3-
b]pyridinyl)pyrimidinyl)amin0)-4,4-dimethylpent-l-enyl)ph0sph0nate (173)
To a solution of (R,E)-diisopropyl (3-((2-chlorofluoropyrimidinyl)amino)-4,4-
dimethylpent-l-enyl)phosphonate, 163, (0.81 g, 1.99 mmol) and 5-fluoro(p-tolylsulfonyl)-
3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)pyrrolo[2,3-b]pyridine, 7a, (1.24 g, 3.00 mmol)
in 2-Me-THF (16 mL) was added K3PO4 (1.27 g, 3.00 mmol) and water (4 mL). The biphasic
mixture was ed under a stream of nitrogen for 15 minutes. Then, X-Phos (0.11 g, 0.24
mmol) and Pd2(dba)3 (0.06 g, 0.06 mmol) was added to the mixture. After degassing with
nitrogen for an onal 5 minutes, the vessel was sealed and heated at 100 °C for 2 hours. The
mixture was cooled to room temperature and diluted with EtOAc, filtered through celite. The
filtrate was washed with brine, dried (MgSO4), d and concentrated in vacuo. The crude
residue was purified Via silica gel chromatography (0-50% CHgClz gradient) to afford
1.123 g ofthe desired t: 1H NMR (400 MHz, d6-DMSO) 8 8.55 - 8.42 (m, 3H), 8.31 (d, J
= 3.7 Hz, 1H), 8.06 (d, J: 8.3 Hz, 2H), 7.73 (d, J: 8.9 Hz, 1H), 7.44 (d, J: 8.4 Hz, 2H), 6.80
(ddd, J: 22.2, 17.1, 6.9 Hz, 1H), 5.99 (dd, J: 20.3, 17.1 Hz, 1H), 4.95 (t, J: 7.6 Hz, 1H), 4.51
- 4.32 (m, 2H), 2.35 (s, 3H), 1.19 - 1.14 (m, 6H), 1.11 (dd, J: 6.0, 4.4 Hz, 6H), 1.02 (s, 9H).);
LCMS nt 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, RT = 4.06 minutes (M+H)
662.35.
ion of (R,E)—diisopropyl (3-((5-fluoro(5-fluoro-lH-pyrrolo[2,3-b]pyridin-
3-yl)pyrimidinyl)amino)-4,4-dimethylpentenyl)phosphonate (18a)
To a solution of (R,E)-diis0pr0pyl (3-((5-fiuor0(5-flu0r0t0syl-1H-pyrrolo[2,3-
b]pyridinyl)pyrimidinyl)amin0)-4,4-dimethylpentenyl)phosph0nate, 17a, (1.0 g, 1.51
mmol) in methanol (30 mL) was added sodium methoxide (8.2 mL of 25% wt solution in
MeOH). After 3 minutes, the mixture was diluted into aqueous saturated NH4Cl solution and
extracted twice with EtOAc. The combined organic phases were dried (MgSO4), filtered and
trated in vacuo. The crude residue was purified Via silica gel chromatography (0-15%
MeOH/CHzClz gradient) to afford 724 mg of the desired t: LCMS Gradient 10-90%,
0.1% formic acid, 5 minutes, C18/ACN, RT = 2.76 minutes (M+H) 508.13.
Formation of isopropyl-(3-((5-fluoro(5-fluoro-lH-pyrrolo [2,3-b]pyridin
yl)pyrimidinyl)amino)-4,4-dimethylpentyl)phosphonate (19a)
To a on of (R,E)—diis0pr0pyl (3-((5-fiu0r0(5-fiu0r0-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)—4,4-dimethylpentenyl)ph0sph0nate, 18a, (0.36 g, 0.71 mmol) in
MeOH (7 mL) was added Pd on Carbon (10%, wet, Degussa, 0.07 g, 0.07 mmol). The reaction
mixture was stirred in a Parr hydrogenation flask under 50 psi of hydrogen ght. The
mixture was diluted with EtOAc and filtered through celite. The filtrate was concentrated in
vacuo to give the desired t as dark gray solid: 1H NMR (400 MHz, d6-DMSO) 5 12.28 (s,
1H), 8.46 (dd, J: 9.9, 2.7 Hz, 1H), 8.30 - 8.21 (m, 2H), 8.15 (d, J: 3.9 Hz, 1H), 7.29 (d, J: 9.5
Hz, 1H), 4.51 (dt, J: 12.3, 6.2 Hz, 2H), 4.37 (t, J: 9.8 Hz, 1H), 1.95 - 1.60 (m, 3H), 1.59 - 1.35
(m, 1H), 1.24 - 1.09 (m, 12H), 0.99 (s, 9H); LCMS Gradient 10-90%, 0.1% formic acid, 5
minutes, C18/ACN, RT = 2.46 minutes (M+H) 510.56.
Formation of (R)—(3-((5-fluoro(5-fluoro-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)amino)—4,4-dimethylpentyl)phosphonic acid (69)
To a solution of (R)-diis0pr0pyl-(3-((5-fiuoro(5-fiuor0-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)—4,4-dimethylpentyl)ph0sph0nate, 19a, (0.16 g, 0.32 mmol) in
dichloromethane (8 mL) was added iodotrimethylsilane (0.45 mL, 3.18 mmol). The reaction
mixture was stirred at room temperature. After 1 hour, LCMS showed the reaction to be
incomplete. An additional 0.90 mL of iodotrimethylsilane (0.64 mmol) was added to the
reaction mixture. After 5 hours, the e was concentrated in vacuo and the resulting residue
was purified Via preparatory HPLC (CH3CN/1% aqueous TFA) to afford 8 mg of phosphonic
acid, 69, and 34 mg of phosphonate, 21a.
Spectral data for phosphonic acid, 69: 1H NMR (300 MHZ, MeOD) 5 8.59 - 8.39 (m,
2H), 8.32 (t, J: 5.3 Hz, 2H), 4.59 (d, J: 9.5 Hz, 2H), 2.21 (s, 1H), 1.79 (dddd, J: 28.6, 23.0,
13.2, 6.9 Hz, 3H), 1.11 (d, J = 9.5 Hz, 9H); LCMS Gradient 10-90%, 0.1% formic acid, 5
minutes, C18/ACN, RT = 1.81 minutes (M+H) 426.09.
Spectral data for onate 21a: 1H NMR (300 MHz, MeOD) 5 8.57 - 8.41 (m, 2H),
8.32 (d, J: 5.6 Hz, 2H), 4.73 - 4.41 (m, 2H), 2.25 (d, J: 25.7 Hz, 1H), 2.06 - 1.43 (m, 3H), 1.32
- 1.20 (m, 6H), 1.11 (d, J: 11.2 Hz, 9H); LCMS Gradient 10-90%, 0.1% formic acid, 5 s,
Cl8/ACN, RT = 2.06 minutes (M+H) 468.13.
Pregaration of Comgounds I6 and I 7
Synthetic Scheme 4
\ \I —»F
N N N O
H -z _
U? .03.% |\
_| /
(I) O.
22a Nm 2
'l'l
'l'l
NWR L,
N \
CIANN/jl: F
s \ /
| \/, \
\ l
N N
24a 25a
(a) NaH, TsCl, DMF; (b) KOAc, PdC12(dppf), dioxane, water, reflux; (c) Pd(PPh3)4, N32C03,
DME, water; (d) morpholinecarbonyl chloride, lPI'zNEt, CH2ClZ;
Formation of 3-br0m0flu0r0(p-tolylsulf0nyl)pyrrolo[2,3-b]pyridine (22a)
3-bromofluoro-1H—pyrrolo[2,3-b]pyridine (5.0 g, 23.3 mmol) was dissolved in DMF
(37.5 mL) and cooled to 0 oC. Sodium hydride (1.5 g, 37.2 mmol) was added and the on
mixture was stirred for 10 minutes and then treated with tosyl chloride (6.6 g, 34.9 mmol). The
mixture was stirred for 30 minutes at 0 CC and then at room temperature for another 90 minutes.
The reaction e was poured into water (100 mL) and the resulting solid was collected,
washed with water and hexanes three times and dried in vacuo to afford 8.26 g of 3-bromo
fluoro(p-tolylsulfonyl)pyrrolo[2,3-b]pyridine, 22a: 1H NMR (300 MHZ, DMSO-dg) 5 8.48 (s,
1H), 8.31 (s, 1H), 8.01 (d, J: 8.3 Hz, 2H), 7.92 (dd, J: 8.4, 2.7 Hz, 1H), 7.44 (d, J: 8.5 Hz,
2H), 2.35 (s, 3H).
Formation of S-fluoro(p-tolylsulf0nyl)—3-(4,4,5,5-tetramethyl-1,3,2-di0xab0rolan
yl)pyrrolo[2,3-b]pyridine (7a)
ofluoro(p-tolylsulfonyl)pyrrolo[2,3-b]pyridine, 22a, (4.0 g, 10.8 mmol),
4,4,5,5-tetramethyl(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,3,2-dioxaborolane (8.3 g,
32.5 mmol) and ium acetate (3.2 g, 32.5 mmol) were taken in dioxane (40 mL) containing
a few drops of water. After purging with nitrogen for 30 s, PdC12(dppf) (0.8 g, 1.1 mmol)
was added. Nitrogen purging was continued for an onal 40 minutes, then the reaction
mixture was heated to reflux overnight. After cooling down, the mixture was filtered through
Florisil (60g), washed with dichloromethane (220 mL) and concentrated in vacuo to provide a
brown oil. The crude product was taken into hexane (40 mL) and TBME (14 mL) and heated to
reflux. After cooling to room temperature, the resulting suspension was d to provide 2.6 g
of the desired product as a white solid: 1H NMR (300 MHz, DMSO-dg) 8 8.42 (dd, J = 2.7, 1.4
Hz, 1H), 8.14 (s, 1H), 8.06 (d, J: 8.4 Hz, 2H), 7.85 (dd, J: 8.6, 2.8 Hz, 1H), 7.44 (d, J: 8.3
Hz, 2H), 2.36 (s, 3H), 1.32 (s, 12H).
Formation of o(5-fluoromethylsulfanyl-pyrimidin-Z-yl)—1-(p-
ulfonyl)pyrrolo[2,3-b]pyridine (24a)
2-chlor0fluoromethylsulfanyl-pyrimidine (1.6 g, 9.0 mmol), 5-fluor0(p-
tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-di0xaborolanyl)pyrrolo[2,3-b]pyridine, 7a, (2.5 g,
6.0 mmol) and N32CO3 (1.9 g, 18.0 mmol) were dissolved in DME (37.5 mL) and water (7.5
mL). The mixture was purged with nitrogen for 20 minutes, treated with Pd(PPh3)4, purged with
nitrogen for another 20 minutes and heated to reflux overnight. After cooling to room
temperature, water (35 mL) was added and the resulting suspension was stirred for 30 minutes.
The precipitate was ted by filtration, washed with water and acetonitrile and dried
overnight at 50 oC, affording 2.3 g (88.5%) of the desired product as a white solid: 1H NMR
(300 MHz, DMSO-d6) 8 8.70 — 8.57 (m, 2H), 8.55 — 8.42 (m, 2H), 8.09 (d, J: 8.4 Hz, 2H), 7.45
(d, J: 8.4 Hz, 2H), 2.76 (s, 3H), 2.36 (s, 3H).
Formation of 5-fluoro(5-fluoromethylsulfinyl-pyrimidin-Z-yl)—1-(p-
tolylsulfonyl)pyrrolo[2,3-b]pyridine (25a)
-fiu0r0-3 -(5 -flu0r0methylsulfanyl-pyrimidinyl)(p-tolylsulf0nyl)pyrrolo [2,3 -
b]pyridine, 24a, (2.30 g, 5.32 mmol) was dissolved in dichloromethane (107 mL) and treated
portionwise with 3-chloroperbenzoic acid (1.19 g, 5.30 mmol), keeping the temperature below
°C. After ng for 2 hours, another portion of 3-chloroperbenzoic acid (0.18 g, 0.80 mmol)
was added, and stirring was continued for r hour. A third portion of 3-chlor0perbenz0ic
acid (0.07 g, 0.05 mmol) was added and stirring was continued for 30 minutes. The on
mixture was treated with an aqueous 15% K2C03 solution (30 mL) and the layers were
separated. The organic layer was washed with 15% K2C03 and brine, dried (Na2S04), filtered
and concentrated in vacuo to afford 2.3 g (96%) of the desired product as a yellow solid, which
was used without fithher purification: 1H NMR (300 MHz, DMSO-d6) 5 9.12 (d, J = 1.5 Hz,
1H), 8.70 (s, 1H), 8.67 (dd, J: 9.1, 2.8 Hz, 1H), 8.53 (d, J: 1.5 Hz, 1H), 8.11 (d, J: 8.4 Hz,
2H), 7.46 (d, J: 8.2 Hz, 2H), 3.05 (s, 3H), 2.36 (s, 3H).
The following analog was prepared in a similar fashion as the procedure described above for
sulfoxide, 25a:
Na,9S/
\ \
I \
N N 1a
-chloro(5-fluoro(methylsulfinyl)pyrimidinyl)—1-tosyl—1H-pyrrolo [2,3-b]pyridine
(la)
1H NMR (300 MHz, d6-DMSO) 8 9.12 (d, .1: 1.3 Hz, 1H), 8.90 (d, .1: 2.4 Hz, 1H), 8.68 (s,
1H), 8.53 (d, J: 2.4 Hz, 1H), 8.12 (d, J = 8.4 Hz, 2H), 7.46 (d, .1: 8.4 Hz, 2H), 2.54 _ 2.48 (m,
3H), 2.36 (s, 3H).
tic Scheme 5
H O NH2 0
Cm; _. 96H _.QMOBN H a b
MgBr
26a 27a
H 16 H 17
a) EtzO; b) malonic acid, ammonium acetate, ethanol, 80 0C; c) o(5-fluoro
(methylsulfinyl)pyrimidinyl)tosyl-1H—pyrrolo[2,3-b]pyridine, 25a, 1PerEt, THF, 80 0C;
(d) LiOH, THF- H20 (3:1), 130 °C microwave; e) SFC chiral tion
Formation of 2,2-dimethylbutanal (263)
To a solution of 1,1-dimethylpropyl magnesium chloride (20.0 mL of 1 M, 20.0 mmol) in
ether (25 mL) was added N—methyl-N—phenyl ide (5.26 mL, 20.0 mmol) in one portion
(exothermic). The yellow solution was gently refluxed for two hours and stirred at room
temperature for three hours. At the end of this period the Grignard complex was quenched by
pouring onto 500 g of crushed ice and 20 ml. of concentrated sulfiaric acid. The ether layer was
separated and the aqueous phase ted three times with 50 mL portions of ether. The
combined ether extracts were dried (MgSO4) and concentrated in vacuo. The crude residue was
purified by short-path distillation to afford 1.0 g of pure 2,2-dimethylbutanal as a colorless oil:
1H NMR (400 MHz,CDC13)8 4.17 (q, J: 7.1 Hz, 2H), 3.03 (dd, J: 10.9, 2.3 Hz, 1H), 2.53 (dd,
J: 15.3, 2.3 Hz, 1H), 2.15 (dd, J: 15.3, 10.9 Hz, 1H), 1.50 — 1.33 (m, 3H), 1.28 (dd, J: 9.0,
.3 Hz, 3H), 1.26 — 1.17 (m, 1H), 0.85 (d, J: 5.8 Hz, 6H).
Formation of ethyl 3-amin0-4,4-dimethylhexanoate (273)
A mixture of 2,2-dimethylbutanal, 26a, (3.00 g, 26.75 mmol), malonic acid (2.08 g, 1.29
mL, 20.00 mmol), ammonium acetate (3.08 g, 40.00 mmol) in ethanol (5 mL) was refluxed for
three hours. The precipitate was removed by filtration and washed with ethanol. The solution
was used without fiarther purification.
ic acid (1.962 g, 1.066 mL, 20.00 mmol) was added to above ethanol solution and
the resulting e was heated to reflux for two hours. The solvent was removed under
reduced pressure. Water (20 mL) and ether (10 mL) were added to the crude residue. The
aqueous layer was separated and washed with ether (10 mL). The organic layers were discarded.
The aqueous solution was neutralized with sodium hydroxide solution (6N) and ted sodium
bicarbonate solution to basic, and extracted with ethyl acetate (3 x 10 mL). The combined
organic layers were washed with water (10 mL), brine (10mL), filtered, dried ), filtered
and concentrated in vacuo to give 0.5 g of the d product as a light yellow sticky oil, which
turned into solid upon standing. The crude product was used without r purification: 1H
NMR (400 MHz, CDC13)5 4.17 (q, J: 7.1 Hz, 2H), 3.03 (dd, J: 10.9, 2.3 Hz, 1H), 2.53 (dd, J
= 15.3, 2.3 Hz, 1H), 2.15 (dd, J: 15.3, 10.9 Hz, 1H), 1.50
— 1.33 (m, 3H), 1.28 (dd, J: 9.0, 5.3
Hz, 3H), 1.26 — 1.17 (m, 1H), 0.85 (d, J: 5.8 Hz, 6H).
Formation of ethyl 3-((5-flu0r0(5-flu0r0t0syl-1H-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amino)—4,4-dimethylhexanoate (28a)
To a suspension of ethyl 3-amino-4,4-dimethylhexanoate, 27a, (0.19 g. 1.00 mmol) and 5-
fiuoro-3 -(5-fiuoromethylsulfinyl-pyrimidinyl)(p-tolylsulfonyl)pyrrolo [2,3 -b]pyridine,
25a, (0.54 g, 1.20 mmol) in THF (14.4 mL) was added N,N—diisopropylethylamine (0.26 mL,
1.50 mmol). The mixture was refluxed at 80 CC overnight. After removing the solvents under
reduced pressure, the crude product was purified by silica gel chromatography (0-50%
EtOAc/Hexane gradient) to afford 155 mg of the desired product as a light yellow solid: 1H
NMR (300 MHz, CDCl3) 5 8.61 (dd, J: 9.0, 2.9 Hz, 1H), 8.56 (s, 1H), 8.33 (dd, J: 2.7, 1.0 Hz,
1H), 8.11 (d, J: 8.4 Hz, 2H), 7.30 (d, J: 8.2 Hz, 2H), 5.19 (dd, J: 10.1, 2.2 Hz, 1H), 4.94 (td,
J: 10.0, 3.7 Hz, 1H), 3.99 (dt, .1: 13.7, 6.8 Hz, 2H), 2.40 (s, 3H), 1.42 (dt, J: 14.1, 6.9 Hz,
2H), 1.05 (t, .1 = 7.1 Hz, 3H), 1.01 — 0.94 (m, 8H); ”P NMR (282 MHz, CDClg) 5 9 —
133.75 (dd, J: 9.0, 1.1 Hz, 1F), -158.56 (s, 1F); LCMS Gradient , 0.1% formic acid, 5
minutes, N, RT = 4.18 minutes (M+H) 572.07.
Formation of 3-((5-flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)amino)—4,4-dimethylhexanoic acid (16, 17)
To a solution of ethyl 3-((5-fiuoro(5-fiuoro-l-tosyl-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amino)-4,4-dimethylhexanoate, 28a, (0.16 g, 0.27 mmol) in THF (6 mL) was
added LiOH (1.50 mL of 1 M solution, 1.50mmol). The reaction mixture was heated in a
microwave reactor at 130 CC for thirty minutes. The reaction was quenched by the addition of
aqueous saturated NH4Cl solution. The resulting white precipitate was collected and washed
with water, acetonitrile and ether. The combined organic phases were then concentrated in
vacuo to give pure desired carboxylic acid as a solid. The solid was diluted with hydrochloric
acid (2 mL of 1N solution) and lyophilized to give 110 mg of the d t as a
hydrochloride salt (light yellow powder): 1H NMR (300 MHZ, MeOD) 5 8.73 (d, J = 9.5 Hz,
1H), 8.16 (s, 1H), 8.15 — 8.10 (m, 1H), 7.93 (d, J: 4.0 Hz, 1H), 5.02 (d, J: 6.4 Hz, 1H), 3.75
(ddd, J: 6.7, 4.2, 2.5 Hz, 3H), 2.66 (d, J: 11.2 Hz, 1H), 2.45 (dd, J: 14.0, 9.9 Hz, 1H), 1.93 —
1.83 (m, 3H), 1.46 (d, J = 7.5 Hz, 2H), 1.05 — 0.93 (m, 9H); ”P NMR (282 MHz, MeOD) 5 —
139.17 (s, 1F), -160.86 (s, 1F); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes,
C18/ACN, RT = 2.04 minutes (M+H) .
The racemic mixture was submitted to SFC chiral separation to give the individual
enantiomers, 16, and 17.
Pre aration 0 Com ounds I4 and 15
Synthetic Scheme 6
ON ON H NH2 0
(5 —> (5 ma b c
—* We
31a 32a 33a
F F
all a, O
N\ , s\ NH
d N\ / OEt ef
\ \
N N 25a N N
TS TS
a, F
N\ N NH\_>_OH ’ OH
F N
/ F
I \ /
\ I \
N N
H N N
14 H 15
a) LiHMDS, MeI,_THF -78 0C; b) DIBAL, CH2C12, -78 0C; c) malonic acid, ammonium acetate,
ethanol, 80 0C; d) , THF, 80 0C; e) LiOH, THF- H20 (3:1), 130 °C, microwave; f) SFC
chiral separation
Formation of 1-methylcyclopentanecarbonitrile (313)
To a cold (-78 oC) solution of LiHMDS (48.0 mL of 1 M solution in tetrahydrofuran, 48.0
mmol) in tetrahydrofuran was added dropwise a solution of cyclopentanecarbonitrile (3.81 g,
40.0 mmol) in tetrahydrofuran (10 mL) over a 5 minute period. After stirring at -78 CC for thirty
minutes, methyl iodide (3.74 mL, 60.00 mmol) was added in one portion. The reaction was
allowed to warm to room temperature overnight. The on was cooled to 0 oC, ethyl acetate
(50 mL) and aqueous saturated ammonium chloride solution (20 mL) was added. Additional
water (10 mL) was added to dissolve the solid. The c layer was separated and washed
with s saturated ammonium chloride (20 mL). The aqueous layer was extracted with ethyl
acetate (2 X 20 mL). The combined organic phases were washed with brine, dried (MgSO4),
filtered and concentrated in vacuo to give a 4.7g of a yellow oil that was used without fiarther
purification: 1H NMR (400 MHz, CDClg) 8 2.04 - 1.93 (m, 2H), 1.77- 1.65 (m, 2H), 1.66 - 1.55
(m, 2H), 1.54 (m, 2H), 1.25 (s, 3H).
Formation of 1-methylcyclopentanecarbaldehyde (323)
To a cold (-78 oC) solution of diisobutylaluminum hydride (100.0 mL of 1 M solution,
100.0 mmol) in dichloromethane was added dropwise a solution of 1-
methylcyclopentanecarbonitrile, 3121, (4.3 g, 40.0 mmol) in dichloromethane (5 mL). The
reaction was kept at -78 CC for thirty minutes. The e bath was d and methanol (1
2012/049097
mL) was added to quench the reaction. Potassium sodium tartrate solution (30 mL, 10%
solution) was added and the mixture d usly. The organic layer was separated and the
s layer was extracted with dichloromethane (3 X 20 mL). The combined organic phases
were washed with brine, dried over sodium sulfate, filtered and concentrated in vacuo to give 3 g
of a light yellow oil that was used without further purification: 1H NMR (400 MHz, CDClg) 5
2.04 — 1.93 (m, 2H), 1.77— 1.65 (m, 2H), 1.66 _ 1.55 (m, 2H), 1.54 (m, 2H), 1.25 (s, 3H).
Formation of ethyl 3-amin0(1-methylcyclopentyl)pr0pan0ate (33a)
A mixture of 1-methylcyclopentanecarbaldehyde, 32a, (3.00 g, 26.75 mmol), c acid
(1.29 mL, 20.00 mmol) and ammonium acetate (3.08 g, 40.00 mmol) in ethanol (5 mL) was
refluxed for 12 hours. The itate was removed by filtration and washed with ethanol. The
filtrate was used without further purification.
Sulfiaric acid (1.07 mL, 20.00 mmol) was added to the above ethanol solution and heated to
reflux for 2h. The solvent was removed under reduced pressure. The residue was diluted with
water (20 mL) and ether (10 mL). The aqueous layer was separated and washed with ether (10
mL). The organic layers were discarded. The aqueous solution was neutralized with sodium
hydroxide solution (6N) to basic, and extracted with ethyl acetate (3 x 10 mL). The combined
organic layers were washed with water (10 mL), brine (10 mL), filtered, dried ), filtered
and concentrated in vacuo to give 1.5 g of a light yellow sticky oil that turned into solid upon
standing. The crude product was used without r purification: 1H NMR (400 MHz, CDCl3)
8 4.25 — 4.14 (q, 2H), 3.40 (bs, 2H), 3.20 — 3.09 (m, 1H), 2.48 (ddd, J: 26.2, 16.0, 6.6 Hz, 2H),
1.77- 1.58 (m, 4H), 1.52 (m, 2H), 1.47 — 1.32 (m, 2H), 1.25 (m, 3H), 0.94 (s, 3H).
ion of ethyl 3-((5-flu0r0(5-flu0r0t0syl-1H-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)(1-methylcyclopentyl)pr0pan0ate (34a)
A suspension of ethyl 3-amino(1-methylcyclopentyl)propanoate, 33a, (0.20 g, 1.00
mmol), 5-fiuoro-3 -(5 -fiuoromethylsulfinyl-pyrimidinyl)(p-tolylsulfonyl)-pyrrolo [2,3 -
b]pyridine, 25a (0.54 g, 1.20 mmol), and N,N—diisopropylethylamine (0.26 mL, 1.50 mmol) in
THF (14.4 mL) was refluxed at 80 OC overnight. After removing the solvent in vacuo, the crude
product was purified by silica gel chromatography (0-50% EtOAc/Hexanes gradient) to afford
300 mg of the desired product as a light yellow solid: 1H NMR (400 MHz, CDClg) 8 8.49 (dd, J
= 9.0, 2.8 Hz, 1H), 8.46 (s, 1H), 8.23 (d, J: 1.5 Hz, 1H), 8.02 (d, J: 8.3 Hz, 2H), 7.99 (d, J:
3.1 Hz, 1H), 7.20 (d, J: 7.8 Hz, 2H), 5.23 (d, J: 8.9 Hz, 1H), 4.80 (td, J: 9.7, 3.6 Hz, 1H),
4.04 (q, J: 7.1 Hz, 1H), 3.91 (q, J: 7.1 Hz, 2H), 2.73 — 2.58 (m, 1H), 2.44 (dd, J: 14.7, 9.6
Hz, 1H), 2.33 — 2.21 (m, 3H), 1.72 — 1.46 (m, 7H), 1.42 — 1.31 (m, 1H), 1.28 (t, J: 6.1 Hz, 1H),
1.17 (dd, J: 13.4, 6.2 Hz, 2H), 0.98 (t, J: 7.1 Hz, 6H); LCMS Gradient 10-90%, 0.1% formic
acid, 5 minutes, Cl8/ACN, RT = 4.25 minutes (M+H) 584.29.
Formation of ethyl 3-((5-flu0r0(5-flu0r0t0syl-1H-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)(1-methylcyclopentyl)pr0pan0ate (14, 15)
To a solution of ethyl 3-((5-fiuoro(5-fiuorotosyl-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amino)(1-methylcyclopentyl)propanoate, 34a, (0.16 g, 0.27 mmol) in THF
(6 mL) was added LiOH (1.50 mL of 1 M solution, 1.50 mmol). The reaction mixture was
irradiated in a microwave reactor for 30 minutes at 130 oC. Aqueous ted NH4Cl solution
was added to acidify the e. The resulting white precipitate was collected and washed with
water, acetonitrile and ether. The solid was then dried in vacuo to give pure desired acid. To the
solid was added hydrochloric acid (2 mL of 1N solution) and the mixture was lyophilized to give
120 mg of the desired product as a hydrochloride salt (light yellow powder): 1H NMR (400
MHz, MeOD) 8 8.64 (d, J: 9.3 Hz, 1H), 8.14 (d, J: 8.3 Hz, 2H), 7.97 (d, J: 3.6 Hz, 1H), 4.99
(d, J: 6.3 Hz, 1H), 3.37 (s, 1H), 2.75 (dd, J: 14.9, 3.6 Hz, 1H), 2.55 (dd, J: 14.8, 9.7 Hz, 1H),
1.83 — 1.57 (m, 6H), 1.54 — 1.42 (m, 1H), 1.37 (dd, J: 11.9, 5.6 Hz, 1H), 1.11 (d, J: 19.2 Hz,
3H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, N, RT = 2.10 minutes
(M+H) 401.94.
The c mixture of carboxylic acids was submitted to SFC chiral separation to give the
individual enantiomers, 14 and 15.
Pre aration 0 Com ounds 20 and 23
Synthetic Scheme 7
_ o
— O b
N/NH —>a
\N~ fig N’NwF;
N\/NH/O —F \N‘/O
0' 7\ H N7\ —\
CI F Q>§< \// \ 7\
15a 37a / \ \B‘O N '1 38a
N’ 7a Ts
& o a o a o
c N\ d
F [fly—H01 N\ N‘
F N/ NW0 F N/ NMOH
\ / \ 7\
\ / \ 7\ 8 \ / \ 7\
TS 39a 23 20
(a) ethyltriphenylphosphoranylideneacetate, CH2C12; (b) 5-fluoro(4,4,5,5-tetramethyl-
1,3,2-dioxaborolanyl)tosyl-1H—pyrrolo[2,3-b]pyridine, 7a, aq. K3PO4, 2-Me-THF, H20, X-
Phos, Pd2(dba)3; (c) H2, 10% Pd/C, MeOH; (d) CH3CN, 4N HCl/Dioxane
Formation of (R,E)—ethyl 4-((2-chlor0flu0r0pyrimidinyl)amin0)—5,5-
dimethylhex-Z-enoate (373)
To a solution of ((2-chlorofluoropyrimidinyl)amino)-3,3-dimethylbutanal,
153, (0.45 g, 1.84 mmol) in dichloromethane (9.0 mL) was added ethyl 2-
triphenylphosphoranylideneacetate (0.96 g, 2.75 mmol). After allowing the reaction mixture to
stir at room temperature overnight, imately half of the solvent was removed under reduced
pressure. The remaining crude mixture was purified by ly g onto a silica gel column
(0-100% EtOAc/hexanes) to afford 535 mg of the desired product: LCMS Gradient 10-90%,
0.1% formic acid, 5 minutes, C18/ACN, RT = 3.41 minutes (M+H) 316.32.
Formation of (R,E)—ethyl 4-((5-flu0r0(5—flu0r0t0syl-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amino)—5,5-dimethylhexen0ate (383)
K3P04 (1.078 g, 5.079 mmol) was dissolved in water (3.2 mL) and added to a solution of
(R,E)-ethyl 4-((2-chlorofluoropyrimidinyl)amino)-5,5-dimethylhexenoate, 373, (0.534
g, 1.693 mmol) in yl-THF (10.7 mL) and the mixture was purged with nitrogen for 30
minutes. 5 -fluoro(p-tolylsulfonyl)-3 -(4,4,5 ,5 -tetramethyl- 1 ,3 ,2-dioxaborolan
yl)pyrrolo[2,3-b]pyridine, 73, (0.775 g, 1.862 mmol) was added and the nitrogen purging was
continued for an additional 15 min. X-Phos (0.048 g, 0.102 mmol) and Pd2(dba)3 (0.031 g, 0.034
mmol) were added and the mixture was heated at 80 0C ght. After cooling to room
WO 19828 2012/049097
temperature, the reaction mixture was diluted with water and extracted with EtOAc. The layers
were separated and the c phase was washed with brine, dried over MgSO4, d and
ated to dryness. The crude residue was dissolved in a m volume of
dichloromethane and purified by silica gel chromatography (0-100%EtOAc/hexanes gradient) to
afford 650 mg of desired product: 1H NMR (400 MHz, CDClg) 8 8.57 — 8.38 (m, 2H), 8.30 (s,
1H), 8.11 (dd, J: 10.5, 5.5 Hz, 3H), 7.08 (dt, J: 36.7, 18.3 Hz, 1H), 6.01 (d, J: 15.7 Hz, 1H),
.11 (d, J: 8.7 Hz, 1H), 4.97 — 4.77 (m, 1H), 4.19 (q, J: 7.1 Hz, 2H), 2.39 (d, J: 10.7 Hz, 3H),
1.27 (q, J = 7.4 Hz, 4H), 1.10 (s, 9H); LCMS Gradient 10-90%, 0.1% formic acid, 5 s,
C18/ACN, RT = 3.99 minutes (M+H) 570.01.
Formation of (R)-ethyl 4-((5-flu0r0(5-flu0r0t0syl-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)-5,5-dimethylhexan0ate (39a)
To a nitrogen purged flask charged with 10% Pd/C (0.033 g, 0.310 mmol) was added
enough methanol to cover the catalyst. To this mixture was added a solution of (R,E)-ethyl 4-
((5 (5 -fiuorotosyl-1H—pyrrolo[2,3 -b]pyridin-3 -yl)pyrimidinyl)amino)-5 ,5 -
dimethylhexenoate, 38a, (0.330 g, 0.579 mmol) in MeOH. Note, a small amount of EtOAc
was added to fillly solubilize the ng material. The reaction e was then stirred under 1
atmosphere of hydrogen for 3 hours. LCMS shows presence of significant amounts of starting
material. The contents of the reaction e were transferred to a pressure vessel containing a
fresh source of palladium (0.033 g, 0.310 mmol). The reaction mixture was stirred in a Parr
enation flask under 46 psi of hydrogen overnight. The mixture was diluted with methanol
and filtered through celite. The e was concentrated in vacuo to afford 331 mg of the desired
product that was used without fiarther purification: LCMS Gradient 10-90%, 0.1% formic acid, 5
minutes, C18/ACN, RT = 3.75 minutes (M+H) 572.35.
Formation of ((5—flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)amino)—5,5-dimethylhexanoic acid (20)
To a solution of (R)-ethyl 4-((5-fiuoro(5-fiuorotosyl-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amino)-5,5-dimethylhexanoate, 39a, (0.30 g, 0.53 mmol) was in acetonitrile (5
mL) was added HCl (0.70 mL of 4 M solution in dioxane, 2.80 mmol). The reaction mixture
was heated at 60 0C for 3 hours and then heated to 80 0C for 6 hours to drive the reaction to
completion. After cooling to room temperature, the mixture was then stirred overnight. LCMS
showed remaining starting material. Fresh HCl (0.7 mL of 4 M solution in dioxane, 2.80 mmol)
was added and the mixture was heated to 80 oC overnight. All volatiles were removed under
reduced pressure and the residue was diluted with EtOAc and aqueous saturated NaHC03
solution. The layers were separated and the organic phase was washed with brine, dried over
MgSO4, filtered and evaporated to dryness. The crude residue was purified by silica gel
chromatography (0-100% EtOAc/hexanes gradient) to afford 144 mg of (R)-ethyl 4-((5-fluoro
(5-fiuoro-1H-pyrrolo[2,3-b]pyridinyl)pyrimidinyl)amino)-5,5-dimethylhexanoate, 23, and
29 mg of (R)((5-fiuoro(5-fiuoro-1H—pyrrolo[2,3-b]pyridinyl)pyrimidinyl)amino)-5,5-
dimethylhexanoic acid, 20. Spectral data for 20: 1H NMR (400 MHz, DMSO) 5 12.23 (s, 1H),
11.93 (s, 1H), 8.48 (d, J: 9.9 Hz, 1H), 8.33 - 8.07 (m, 3H), 7.18 (d, J: 9.3 Hz, 1H), 4.39 (t, J:
.2 Hz, 1H), 2.38 - 2.07 (m, 2H), 1.99 - 1.92 (m, 1H), 1.80 - 1.64 (m, 1H), 1.00 (d, J: 20.2 Hz,
9H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, RT = 2.14 minutes
(M+H) 390.06.
Pre aration 0 Com ound 59
Synthetic Scheme 8
/ F N : H
\ ’ \ J‘
N // \ 7\
I\\I 42a \N
Ts H 59
Formation of (R,E)—4-((5-fluoro(5-fluoro-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)amino)-5,5-dimethylhexenoic acid (59)
Starting ethyl ester, 42a, was prepared in the same fashion as the enantiomeric ethyl
ester, 38a, shown in tic Scheme 7.
To a solution of (S,E)-ethyl 4-((5-fluor0(5-fluorot0syl-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)-5,5-dimethylheXen0ate, 42a, (0.064 g, 0.112 mmol) in dioxane (2
mL) was added LiOH (2 mL of 2N solution). After heating at 100 0C for 2 hours, the mixture
was ed to pH 6 with 2N HCl. The aqueous phase was extracted with ethyl acetate (3X),
dried (MgSO4), filtered and concentrated in vacuo. The resulting residue was purified Via
preparatory HPLC (CH3CN/H20 — TFA r) to afford 35 mg of the desired product as a
TFA-salt: 1H NMR (300 MHz, MeOD) 5 8.54 (s, 1H), 8.50 =
- 8.18 (m, 3H), 7.18 (dd, J 15.7,
7.1 Hz, 1H), 6.08 (dd, J = 15.7, 1.3 Hz, 1H), 5.21 (t, J = 22.5 Hz, 1H), 1.12 (s, 9H); LCMS
Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, (M+H) .
Pre aration 0 Com ound 44
Synthetic scheme 9
NH2 0 NH2 0
” f
0' e NH
OH 0 N\ / OMe
—> —>
—> N
483 49a CI
,. o
N / NH OMe
\ -——-" O
N h 9
F N / NH OMe
—> / —’ \
73 F
\ I
N N 513 I \ 52a
1'. \
S N N
h _, o
N / NH OH
_, \
I \ 44
N N
(a) Pyridinium chlorochromate, CHZCIZ; (b) ethyltriphenyl-phosphoranylideneacetate,
; (c) N—benzylhydroxylamine, Et3N, CHzClz (d) H2, palladium hydroxide, EtOH (e)
diazomethyl-trimethylsilane, MeOH, benzene (f) 2,4-dichlorofluoro-pyrimidine, Et3N, THF,
EtOH (g) o(4,4,5 ,5-tetramethyl-1,3 ,2-dioxaborolanyl)tosyl-1H—pyrrolo[2,3-
b]pyridine, 7a, Aq. K3P04, 2-Me-THF, H20, X-Phos, Pd2(dba)3, 80 0C; (h) MeOH, NaOMe (i)
aq. NaOH, THF, MeOH
Formation of cyclobutanecarbaldehyde (453)
To a stirred suspension of pyridinium chlorochromate (14.9 g, 69.1 mmol) in
dichloromethane (150 mL) was added a solution of cyclobutylmethanol (4.0 g, 46.4 mmol) i n
dichloromethane (60 mL). The reaction mixture turned black within a few s and was
allowed to stir at room temperature for 1 hour. The mixture was diluted with diethyl ether (500
mL) and filtered through a bed of fiorisil (100-200 mesh). The crude material was used without
further purification. Note: the product is volatile, the solvent was carried with the product onto
the next step.
Formation of (E)-ethyl 3-cyclobutylacrylate (46a)
Ethyl 2-triphenylphosphoranylideneacetate (9.32 g, 26.74 mmol) was added to a solution
of cyclobutanecarbaldehyde, 45a, (1.50 g, 17.83 mmol) in romethane (30 mL). The
reaction mixture was briefly purged with nitrogen and capped allowed to stir at room
temperature overnight. All volatiles were removed at reduced re and the residue was
ved in EtzO (100 mL) and hexanes (25mL). The resulting pink precipitate was filtered off
and discarded. The solvent was removed from the filtrate at reduced pressure. The crude
t was purified via silica gel chromatography (0-20% EtOAc/Hexanes gradient) to afford
646 mg (23%) ofthe desired product: 1H NMR (400 MHz, CDClg) 8 7.05 (dd, J: 15.6, 6.8 Hz,
1H), 5.73 (dd, J: 15.6, 1.4 Hz, 1H), 4.29 — 4.09 (m, 2H), 3.20 — 2.98 (m, 1H), 2.28 — 2.09 (m,
2H), 2.04 — 1.78 (m, 4H), 1.36 — 1.18 (m, 3H).
Formation of 2-benzylcyclobutylisoxazolidin0ne (47a)
N—benzylhydroxylamine hydrochloride (0.77 g, 4.82 mmol) and triethylamine (0.76 mL,
.45 mmol) were successively added to a solution of (E)-ethyl 3-cyclobutylacrylate, 46a, (0.65 g,
4.19 mmol) in dry dichloromethane (23.5 mL). The reaction mixture was allowed to stir at room
temperature under an atmosphere of nitrogen for 3 days. The mixture was diluted with 75 mL of
water and the layers were ted. The aqueous phase was reextracted twice more with
dichloromethane (50 mL). The combined organic phases were dried over MgSO4 filtered and
evaporated to dryness. The residue was purified via silica gel chromatography (0-100%
EtOAc/Hexanes nt) to afford 834 mg (86%) of the desired product: 1H NMR (400 MHZ,
CDC13)5 7.38 — 7.26 (m, 5H), 4.64 (s, 1H), 3.82 (q, J = 13.5 Hz, 2H), 3.37 — 3.18 (m, 1H), 2.80
— 2.52 (m, 2H), 2.33 (dd, J: 14.5, 5.1 Hz, 1H), 2.22 — 2.09 (m, 1H), 2.01 — 1.68 (m, 5H).
Formation of (+/-)amin0cyclobutylpr0panoic acid (48a)
oxypalladium (0.252 g, 1.794 mmol) was charged into a flask and flushed with
nitrogen. Ethanol (30 mL) was added followed by a solution of 2-benzyl-3 -cyclobutyl-
isoxazolidin—5-one, 47a, (0.834 g, 3.605 mmol) in approximately 90 mL of ethanol. The reaction
mixture was subjected to 50 psi of hydrogen for 4 hours. The pressure was vented and the
catalyst was filtered off. All volatiles were removed at reduced pressure. 1H NMR shows the
presence of starting material, 47a. The mixture was dissolved in approximately 100 mL of
MeOH and added to 83 mg of C that had been wet with 20 mL of MeOH. The mixture
was subjected to 50 psi of H2 overnight. The pressure was vented and the st was filtered
off. All volatiles were removed at reduced pressure to afford 340 mg of product. The resulting
crude residue was used without fithher purification: 1H NMR (400 MHz, d6-DMSO) 8 3.06 —
2.83 (m, 1H), 2.28 (ddd, J: 23.7, 11.8, 7.7 Hz, 1H), 2.19 — 1.99 (m, 2H), 1.99 — 1.56 (m, 6H).
Formation of (+/-)-methyl 0cyclobutylpropanoate (49a)
To a solution of racemic 3-aminocyclobutyl-propanoic acid, 48a, (0.34 g, 2.38 mmol)
in MeOH (10.2 mL) and benzene (10.2 mL) was added diazomethyltrimethyl-silane (3.56 mL of
2 M solution, 7.13 mmol) and the on e was allowed to stir at room ature under
a nitrogen atmosphere overnight. The mixture was diluted with EtOAc and brine. The layers
were separated and the organic phase was dried (MgSO4), filtered and concentrated in vacuo to
afford 354 mg (95%) of crude product that was used t r purification: 1H NMR (400
C13)5 3.71 — 3.66 (m, 3H), 3.18 — 2.98 (m, 1H), 2.46 — 2.32 (m, 2H), 2.27 — 1.63 (m,
10H).
Formation of methyl (+/-)((2-chloro-S-fluor0pyrimidinyl)amin0)—3-
cyclobutylpropanoate (50a)
To a racemic solution of methyl 3-aminocyclobutylpropanoate, 49a, (0.354 g, 2.252
mmol) and 2,4-dichlorofluoro-pyrimidine (0.414 g, 2.477 mmol) in THF (10 mL) and ethanol
(1 mL) was added triethylamine (0.628 mL, 4.504 mmol). The reaction mixture was heated and
d at 70 0C for 5 hours. The mixture was filtered and the filtrate was concentrated in vacuo
to approximately 5 mL final volume. The crude residue was purified via silica gel
chromatography (0 -100% EtOAC/hexanes gradient) to afford 289 mg (45%) of the desired
product: 1H NMR (300 MHz, CDC13) 5 7.87 (s, 1H), 5.80 (s, 1H), 4.71 — 4.38 (m, 1H), 3.68 (s,
3H), 2.84 — 2.37 (m, 3H), 2.23 — 1.67 (m, 6H); LCMS Gradient 10-90%, 0.1% formic acid, 5
minutes, C18/ACN, RT = 3.08 minutes (M+H) 287.98.
Formation of (+/-)cyclobutyl((5-flu0r0(5-flu0r0t0syl-1H-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)pr0panoate (Sla)
A solution of tripotassium phosphate (0.640 g, 3.021 mmol) in water (1.735 mL) was
added to a on of racemic methyl chlorofluoro-pyrimidinyl)amino]cyclobutyl-
propanoate, 503, (0.289 g, 1.005 mmol) in 2-methyltetrahydrofuran (5.782 mL). The mixture
was then purged with nitrogen for 20 minutes. 5-fluoro(p-tolylsulfonyl)(4,4,5,5-
tetramethyl-l,3,2-dioxaborolanyl)pyrrolo[2,3-b]pyridine, 73, (0.460 g, 1.106 mmol) was
added and the mixture was purged with nitrogen for an additional 10 s. Dicyclohexyl-[2-
(2,4,6-triisopropylphenyl)phenyl]phosphane (X-Phos: 0.029 g, 0.060 mmol) and a}3
(0.018 g, 0.020 mmol) were added and the reaction mixture was warmed to 80 OC and stirred at
this temperature for 5 hours. The e was allowed to cool to room temperature. The
reaction mixture was diluted with water and extracted with EtOAc. The layers were separated
and the organic phase was washed with brine, dried over MgSO4 filtered and evaporated to
s. The crude was dissolved in a minimum volume of dichloromethane and purified via
silica gel tography (0-100%EtOAc/Hexanes).to afford 385 mg (71%) of the desired
product: LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, RT = 3.68 minutes
(M+H) 542.27.
Formation of (+/-)-methyl 3-cyclobutyl—3-((5-flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridin-
3-yl)pyrimidinyl)amin0)pr0pan0ate (523)
To a racemic on of methyl 3-cyclobutyl((5-fluoro(5-fluorotosyl-1H—
pyrrolo[2,3-b]pyridinyl)pyrimidinyl)amino)propanoate, 5121, (0.151 g, 0.280 mmol) in
methanol (1.5 mL) was added NaOMe (1.5 mL of 25 %w/v solution, 6.941 mmol). After stirring
the reaction e at room temperature for 5 minutes, the mixture was quenched with aqueous
saturated NH4Cl solution and d with EtOAc and water. The layers were separated and the
organic phase was washed with brine, dried (MgSO4), filtered and evaporated to dryness. The
resulting crude residue was dissolved in a minimum volume of dichloromethane and purified via
silica gel chromatography (0-100%EtOAc/Hexanes gradient) to afford 108 mg of the desired
t: LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, RT = 2.29 minutes
(M+H) 388.07.
Formation of 3-cyclobutyl((5-flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)pr0pan0ic acid (44)
To a racemic solution of methyl 3-cyclobutyl((5-fluoro(5-fluoro-1H—pyrrolo[2,3-
b]pyridinyl)pyrimidinyl)amino)propanoate (0.042 g, 0.109 mmol) in THF (1.5 mL) and
MeOH (0.5 mL) was added NaOH (0.300 mL of 2 M solution, 0.600 mmol) and the reaction
mixture was warmed to 50 CC. After stirring the reaction mixture for 1 hour, the mixture was
diluted with aqueous ted NH4C1 solution and EtOAc. The organic layer was dried
(MgSO4), filtered and evaporated to dryness to afford 36 mg of the desired product that was used
without r purification: 1H NMR (400 MHZ, d6-DMSO) 5 12.26 (s, 2H), 8.55 (d, J = 9.7
Hz, 1H), 8.19 (dd, J: 45.1, 15.8 Hz, 3H), 7.48 (d, J: 8.1 Hz, 1H), 4.79 (s, 1H), 2.58 (dd, J:
.6, 12.2 Hz, 2H), 1.85 (ddd, J = 29.4, 26.5, 21.1 Hz, 7H); LCMS Gradient 10-90%, 0.1%
formic acid, 5 minutes, C18/ACN, RT = 2.10 minutes (M+H) 374.02.
Pre arationo Com 0unds10 II 19 21 22 32 33 34 35 38 39 40 49 57 and 58
Synthetic Scheme 10
F F
'1in’ OMS
a N/—§*NH OH N/—§’NH b \ Nu
F/ u_,F
C' 7\ \
F Q>€< \N/ \ J‘ \N/
14a / \ B70 N 54a \ 55a
, \ Ts TS
N 7a
F F
C /
\ J< \ OH
F N F
‘ i
/ 3
\ / \ 7\ \ / \
N N
\ \
Ts TS
56a 57a
NWNL/H _
— o NWN o H
0%” f \‘2 /
e, ‘9' \ \—/
F N
N —> N
/
\ / \ ;\ \ l
N N
\ H
Ts 58a 19
(a) 5 -fluoro(p-tolylsulfonyl)—3 -(4,4,5 ,5 -tetramethyl- 1 ,3 ,2-dioxaborolanyl)pyrrolo-[2,3 -
b]pyridine, 7a, K3P04, X-Phos, Pd2(dba)3, 2-MeTHF, water, 120 0C; (b) MsCl. CH2C12; (c)
KOAc, DMF, 80 0C; (d) 30% H202, HCOOH, RT, 2 hr; (e) oxalyl chloride, DMF, CHzClz; (f) (i)
methylamine, THF (ii) 4M HC1, CH3CN, 65 0C.
(S)—2-(5-flu0r0(5-flu0r0tosyl-1H-pyrrolo[2,3-b] pyridinyl)pyridinylamin0)-3,3-
dimethylbutan-l-ol (543).
A mixture of 5-fiuoro(p-tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-dioxaborolan
yl)pyrrolo[2,3-b]pyridine, 73, (11.09 g, 26.64 mmol), (S)((2-chlorofiuoropyrimidin
yl)amino)-3,3-dimethylbutanol, 14a,(6.00 g, 24.22 mmol ) and K3PO4 (15.42 g, 72.66 mmol)
in 2-methyl THF (90 mL) and water (12.00 mL) was purged with nitrogen for 30 s. X-
Phos (0.92 g, 1.94 mmol) and a)3 (0.44 g, 0.48 mmol) were added and the on e
was heated at 120 0C in a pressure Vial for 2 hr. The on mixture was cooled to room
temperature, filtered and concentrated in vacuo. The residue was dissolved in EtOAc (100 mL)
and washed with water. The organic layer was dried (MgSO4), filtered and concentrated in
vacuo. The crude product was purified by silica gel chromatography (0-40% EtOAc/Hexanes
gradient) to afford 10 g of the desired product as a foamy solid: 1H NMR (400 MHz, CDC13) 5
8.54 -8.40 (m, 2H), 8.22 (s, 1H), 8.09 — 8.00 (m, 3H), 7.29- 7.16 (m, 2H), 5.15 (m, 1H), 4.32 —
4.14 (m, 1H), 3.98 (m, 1H), 3.70 (m, 1H), 2.30 (s, 3H), 1.01 (m, 9H); LC/MS (60-90%
ACN/water 5 min with 0.9% FA, C4) m/Z 502.43 (M+H) RT = 1.52 min.
(S)—2-(5-flu0r0(5-flu0r0t0syl—1H—pyrrolo[2,3-b] pyridinyl)pyridinylamin0)-3,3-
dimethylbutyl methanesulfonate (553).
Methanesulfonyl de (1.83 mL, 23.67 mmol) was added to a cold (0 0C) solution of
(S)—2-(5 -fluoro(5 -fluorotosyl-1H-pyrrolo [2,3 -b] pyridin-3 -yl)pyridinylamino)-3 ,3 -
dimethylbutan-l-ol, 5421, (9.50 g, 18.94 mmol) and triethylamine (3.30 mL, 23.67 mmol) in
dichloromethane (118 mL). The reaction mixture was stirred at room temperature for 1 hour.
The solvent was removed under reduced re and the residue was diluted with water (100
mL) and EtOAc (200 mL). The organic layer was separated, dried (MgSO4), filtered and
concentrated under reduced pressure to afford 10.5 g of the d product as a pale yellow
foam: LC/MS (60-90% ACN/water 5 min with 0.9% FA, C4) m/z 580.41 (M+H) RT = 2.00
minutes.
(5-fluoro-Z-(S-fluorot0syl-1H—pyrrolo [2,3-b]pyridinyl)pyridinylamin0)-3,3-
dimethylbutyl ethanethioate (56a).
To a solution of (S)(5-fluoro(5-fluorotosyl-1H—pyrrolo[2,3-b] pyridin
yl)pyridinylamino)-3,3-dimethylbutyl methanesulfonate, 5521, (10.5 g, 18.11 mmol) in dry
DMF (200 mL) was added potassium thioacetate (3.1 g, 27.1 mmol). The brown solution was
heated with stirring at 80 0C for 1 hour. The thick brown suspension was poured into water and
extracted with EtOAc (3x 100 mL). The combined organic phases were dried (MgSO4), ed
and concentrated under reduced pressure. The crude residue was purified by silica gel
chromatography (0-30% EtOAc/Hexanes gradient) to afford 6.8 g of the desired product, 563, as
a pale brown solid: 1H NMR (400 MHz, CDClg) 5 8.41 (m, 2H), 8.23 (s, 1H), 8.01 (m, 3H), 7.23
-7.16 (m, 2H), 4.99 (d, J: 10.1 Hz, 1H), 4.37 (m, 1H), 3.21 (dd, J: 13.8, 2.3 Hz, 1H), 3.09 —
2.95 (m, 1H), 2.31 (s, 3H), 2.16 (s, 3H), 1.02 ; LC/MS (10-90% ACN/water 5 min with
0.9% FA) m/Z 560.99 (M+H) RT = 4.14 minutes.
(S)(5-fluoro-Z-(S-fluorot0syl-1H—pyrrolo ]pyridin-3yl)pyridinylamin0)-3,3-
dimethylbutane—1-sulf0nic acid (573).
To a cold (0 0C) solution of formic acid (103.4 mL, 2.7 mol) was added H202 (34.2 mL of
% solution, 0.3 mol). The solution was d at 0 0C for 1 hour. A solution of (5-
fluoro(5-fluorotosyl- 1H-pyrrolo [2,3 -b]pyridin-3 -yl)pyridinylamino)-3 ,3 -dimethylbutyl
ethanethioate, 563, (6.7 g, 12.0 mmol) in formic acid (20.0 mL) was added dropwise. The
resulting mixture was stirred at room temperature for 2 hours to give a yellow solution. The
solvent was d under reduced pressure to afford the desired product as a foamy pale
yellow solid that was used without further purification: 1H NMR (400 MHz, MeOD) 5 8.72 (m,
2H), 8.31 (s, 1H), 8.21 (d, J: 4.8 Hz, 1H), 8.06 (d, J: 8.1 Hz, 2H), 7.39 (d, J: 8.0 Hz, 2H),
.08 (d, J: 10.0 Hz,1H), 3.19 (m, 2H), 2.36 (s, 3H), 1.04(m, 9H); LC/MS (10-90% ACN/water
min with 0.9% TFA, C18) m/z 566.0 (M+H) RT = 2.66 minutes.
(S)—2-(5-flu0r0(5-flu0r0t0syl—1H—pyrrolo[2,3-b] pyridinyl)pyridinylamin0)-3,3-
dimethylbutane—l-sulfonyl chloride (58a).
Oxalyl chloride (3.5 mL, 38.7 mmol) was added to a solution of (S)—2-(5-fluoro(5-
fluorotosyl- 1H-pyrrolo [2,3 -b]pyridin-3yl)pyridinylamino)-3 ,3 hylbutanesulfonic
acid, 573, (7.3 g, 12.9 mmol) in dichloromethane (130 mL), ed by the slow, dropwise
addition of DMF (2 mL). The yellow colored solution was stirred at room temperature for 1
hour. The solvent was removed under reduced pressure to afford 8.4 g of the d product as
a foamy yellow solid: LC/MS (60-90% ACN/water 5 min with 0.9% FA) m/z 585.72 (M+H) RT
= 2.30 minutes.
(S)—2-(5-flu0r0(5-flu0r0-lH-pyrrolo ] pyridinyl)pyrimidin-4ylamin0)-N,3,3-
trimethylbutane—l-sulfonamide (19)
Methylamine (0.75 mL of 2M solution, 1.53 mmol) was added to a solution of (S)—2-(5-
fluoro(5-fluoro- l -tosyl- l H—pyrrolo [2,3 -b] pyridin-3 -yl)pyridinylamino)-3 ,3 -
dimethylbutane-l-sulfonyl chloride, 5821, (0.15 g, 0.26 mmol) in THF (1 mL). The solution was
stirred for 1 hour at room temperature and the solvent was then removed under reduced pressure.
The crude sulfonamide was dissolved in acetonitrile (3 mL) and HCl (2 mL of a 4M solution in
e) was added. The mixture was heated at 65 0C for 3 hours and then cooled to room
temperature. The t was removed under reduced pressure and the resulting crude residue
was purified by preparative HPLC tography (10-80% CH3CN/water, 0.5% TFA, 15 min)
to give 26 mg of the desired product as a white solid: 1H NMR (400 MHz, CDClg) 8 9.75 (s,
1H), 8.12 (d, J: 9.3 Hz, 1H), 7.94 (s, 1H), 7.73 (s, 2H), 7.67 (brs, 1H), 4.93 - 4.78 (m, 2H), 3.08
(m, 1H), 2.76 (s, 3H), 0.99 (m,9H); LC/MS (10-90% ACN/water 5 min with 0.9% FA) m/z 425.3
(M+H), RT = 2.0 minutes.
The following compounds can be prepared in a similar fashion as the procedure described
above for Compound 19:
H\\S\_ OH0»
F \N \—/H
/ t
\/\ 7\
N N
(S)—N—Cyclopropyl-Z-(S-fluor0(5-flu0r0—lH-pyrrolo [2,3-b] pyridinyl)pyrimidin
ylamino)—3,3-dimethylbutane—l-sulfonamide (21)
1H NMR (400 MHz, CDClg) 8 8.68 (dd, J: 9.6, 2.5 Hz, 1H), 8.24 - 8.11 (m, 2H), 8.03 (d, J:
3.8 Hz, 1H), 5.12 (d, J: 8.5 Hz, 1H), 3.48 (d, J: 9.2 Hz, 2H), 2.60 - 2.47 (m, 1H), 1.13(s,9H),
0.68 =
- 0.48 (m, 4H): LC/MS (10-90% ACN/water 5 min with 0.9% FA) m/z 451.14 (M+H) RT
2.2 minutes.
N/—§7NH OQS/l\N/\/— O O\
F N \—/
/ t
\ / \ 7\
N N
(S)—2-(5-Flu0r0(5-fluoro-lH-pyrrolo [2,3-b]pyridinyl)pyrimidinylamin0)-N-(2-
yethyl)—3,3-dimethylbutane—1-sulf0namide (35)
LC/MS % ACN/water 5 min with 0.9% FA) m/Z 469.28 (M+H) RT = 2.11 minutes.
NWNH Oeél\N/\/_ o
F N \—/
/ t
\ / \ 7 \
N N
(S)(5-Flu0r0(5-fluoro-lH-pyrrolo [2,3-b] pyridinyl)pyrimidinylamin0)-3,3-
dimethyl-N—propylbutane-l-sulfonamide (34)
1H NMR (400 MHz, CDC13) 5 9.84 (s, 1H), 8.10 (d, J: 9.5 Hz, 1H), 7.92 (d, J: 1.2 Hz, 1H),
7.72 (d, J: 14.2 Hz, 2H), 4.92 (m, 1H), 4.81 (m, 1H), 3.41 (d, J: 15.0 Hz, 1H), 3.19 - 2.84 (m,
3H), 1.59 - 1.38 (m, 3H), 0.98 (s, 9H), 0.84 (t, J: 7.4 Hz, 3H): LC/MS (10-90% ACN/water 5
min with 0.9% FA) m/Z 453.44 (M+H) RT = 2.42 minutes.
N/—§*NH— O
0 II
\\S\
F N §__// NH
\ / \ ;\
N N
(S)—2-(5-Flu0r0(5-fluoro-lH-pyrrolo[2,3-b]pyridinyl)pyrimidinylamin0)-N-
isopropyl-3,3-dimethyl-N—propylbutane-l-sulfonamide (39)
1H NMR (400 MHz, CDC13) 8 9.89 (s, 1H), 8.07 (d, J: 8.9 Hz, 1H), 7.90 (s, 1H), 7.68 (s, 2H),
4.96 (t, J: 9.8 Hz, 1H), 4.76 (d, J: 9.8 Hz, 1H), 3.60 (dd, J: 13.0, 6.6 Hz, 1H), 3.42 (m, 1H),
3.09 — 2.86 (m, 1H), 1.20 (d, J: 4.9 Hz, 6H), 0.97 (s, 9H); LC/MS (10-90% ter 5 min
with 0.9% FA) m/Z 453.19 (M+H) RT = 2.22 minutes.
(S)(5-Flu0r0(5-fluoro-lH-pyrrolo [2,3-b]pyridinyl)pyrimidinylamin0)-N-tert-
butyl-3,3-dimethyl-N—propylbutane-l-sulfonamide (40)
LC/MS (10-90% ACN/water 5 min with 0.9% FA) m/z 467.20 (M+H) RT = 2.36 minutes.
NiNH_ o
Ox‘s”
\ ‘NH
F N \—/.
/ § \\
\ / \ ;\
N N
(S)-N-Ethyl(5-flu0r0(5-flu0r0-lH-pyrrolo [2,3-b]pyridinyl)pyrimidinylamin0)-
3,3-dimethylbutane—l-sulfonamide (33)
1H NMR (400 MHz, CDC13) 8 9.89 (brs, 1H), 8.07 (d, J: 9.3 Hz, 1H), 7.89 (s, 1H), 7.66 (n1,
2H), 4.95 (t, J: 10.2 Hz, 1H), 4.80 (d, J = 9.6 Hz, 1H), 3.38 (n1, 1H), 3.18 - 2.96 (n1, 3H), 1.35 -
1.12 (m, 3H), 0.90 (n1, 9H); LC/MS (10-90% ACN/water 5 min with 0.9% FA) m/z 439.30
(M+H) RT = 2.25 minutes.
_ o
OQI/
/ \’<
\ / \ 7\
N N
(S)-N-(2,2-diflu0r0ethyl)(5-flu0r0(5-flu0r0-lH-pyrrolo [2,3-b] nyl)pyrimidin-
4-ylamino)—3,3-dimethylbutane—l-sulfonamide (57)
1H NMR (400 MHz, CDC13) 8 8.05 (d, J: 7.9 Hz, 1H), 7.81 (d, J: 2.1 Hz, 1H), 7.63 (s, 1H),
7.55 (s, 1H), 5.87 (t, J: 54.9 Hz, 1H), 5.03 (t, J: 10.4 Hz, 1H), 4.86 (m, 1H), 3.68 (brs, 1H),
3.43 (n1, 2H), 3.19 (n1, 1H), 0.94 (s, 9H); LC/MS (10-90% ACN/water 5 min with 0.9% FA) m/z
475.23 (M+H) RT = 2.26 minutes.
N/—§*NH— O
\‘S ‘
F \N }_/ NH F
/ C < F
\ /\ ;\
N N
(S)(5-flu0r0(5-fluoro-lH-pyrrolo [2,3-b]pyridinyl)pyrimidinylamin0)-3,3-
dimethyl-N—(Z,2,2-triflu0r0ethyl)butane—l-sulfonamide (58)
1H NMR (400 MHz, CDC13) 8 8.03 (dd, J: 9.3, 2.4 Hz, 1H), 7.82 (t, J: 11.2 Hz, 1H), 7.59 (s,
1H), 7.46 (s, 1H), 5.07 (t, J: 10.6 Hz, 1H), 4.77 (m, 1H), 3.45 (m, 1H), 3.16 - 2.99 (m, 1H),
0.97 =
- 0.86 (n1, 9H); LC/MS (10-90% ter 5 min with 0.9% FA) m/z 493.31 (M+H) RT
2.37 minutes.
NfigiNH_ o
O\II
\N/ \/3
F 1 NH2
/ S
\ / \ 7\
N N
(S)(5-flu0r0(5-fluoro-lH-pyrrolo [2,3-b]pyridinyl)pyrimidinylamin0)-3,3-
dimethylbutane—l-sulfonamide (22)
trated NH4OH (1.0 mL, 25.7 mmol) was added dropwise to a solution of (S)—2-(5-
WO 19828
fluoro(5-fluorotosyl- 1H-pyrrolo [2,3 -b] pyridin-3 -yl)pyridinylamino)-3 ,3 -
dimethylbutanesulfonyl de, 5821, (0.3 g, 0.5 mmol) in THF (3 mL). The reaction
mixture was stirred for 15 minutes at room temperature, resulting in a 1-to-1 mixture of the
d sulfonamide and sulfonic acid. The solvent was removed under reduced re. The
crude product was purified by silica gel chromatography (0-70% EtOAc/Hexanes gradient) to
afford 93 mg of the ted sulfonamide intermediate as a foamy solid.
The tosylated sulfonamide (93 mg) was dissolved in THF (10 mL) and a solution of
NaOMe (0.15 mL of 25% solution in MeOH, 0.66 mmol) was added. The resulting yellow
on was stirred at room temperature for 15 minutes and then diluted into aqueous saturated
NH4C1 solution (5 mL). The solvent was removed under reduced pressure and the residue was
dissolved in water (10 mL). The aqueous layer was extracted with EtOAc (3x10 mL) and dried
(MgSO4), filtered, and concentrated in vacuo. The crude residue was purified by HPLC
preparative chromatography (10-80% CHgCN/water, 0.5% TFA, 15 min) to afford 40 mg of the
desired product, 22, as a white solid: 1H NMR (400 MHz, MeOD) 8 8.65 (d, J = 9.3,1H), 8.47
(s, 1H), 8.34 (m, 2H), 5.28 (d, J: 10.4 Hz, 1H), 3.55 (m, 2H), 1.10 (m, 9H); LC/MS (10-90%
ACN/water 5 min with 0.9% FA) m/z 411.0,1.96 (M+H) RT = 1.96 minutes.
(R)—2-((5-flu0r0(5-flu0r0-lH-pyrrolo [2,3-b] pyridinyl)pyrimidinyl)amin0)—
N,3,3-trimethylbutane—l-sulfonamide (38)
1H NMR (300 MHz, d6-DMSO) 5 12.21 (s, 1H), 8.55 (dd, J: 10.0, 2.8 Hz, 1H), 8.29 -
8.23 (m, 1H), 8.19 (d, J: 2.7 Hz, 1H), 8.15 (d, J: 4.0 Hz, 1H), 7.47 (d, J: 8.4 Hz, 1H), 6.77 -
6.69 (m, 1H), 4.88 (t, J: 9.1 Hz, 1H), 3.49 - 3.36 (m, 1H), 3.36 - 3.28 (m,.]= 10.5 Hz, 1H), 2.55
(t, J = 5.6 Hz, 3H), 0.98 (s, 9H); LCMS nt 10-90%, 0.1% formic acid, 5 minutes,
C18/ACN, RT = 2.11 minutes (M+H) .
NWNH OH
F \N \—/
/ t
\ / \ ;\
N N
(S)(5-flu0r0(5-fluoro-lH-pyrrolo [2,3-b]pyridinyl)pyrimidinylamin0)-3,3-
ylbutane—l-ol (32)
Alcohol, 32, was synthesized in a manner similar to compound 703 utilizing the same
deprotection procedure, starting with compound 543: 1H NMR (400 MHz, CDClg) 8 10.77 (hrs,
1H), 8.25 (d, J: 8.4 Hz, 1H), 8.07 (s,1H), 8.03 (s, 1H), 7.88 (s, 1H), 5.59 (brs, 1H), 4.36 (t, J:
8.3 Hz, 2H), 4.11 (m, 1H), 3.72 (m, 2H), 1.06 (s, 9H); LC/MS (10-90% ACN/water 5 min with
0.9% FA) m/z 348.13 (M+H) RT = 1.83 minutes.
NWNH OH
CI N }—/
/ S
\ / \ 7\
N N
(S)((2-(5-chlor0-lH-pyrrolo [2,3-b] pyridinyl)-S-fluor0pyrimidinyl)amin0)—3,3-
dimethylbutan-l-ol (49)
l, 49, was synthesized in a manner similar to compound 32: 1H NMR (400 MHz,
CDC13) 8 10.77 (hrs, 1H), 8.25 (d, J: 8.4 Hz, 1H), 8.07 (s,lH), 8.03 (s, 1H), 7.88 (s, 1H), 5.59
(brs, 1H), 4.36 (t, J: 8.3 Hz, 2H), 4.11 (m, 1H), 3.72 (m, 2H), 1.06 (s, 9H); LC/MS (10-90%
ter 5 min with 0.9% FA) m/z 348.13 (M+H) RT = 1.83 minutes.
N/—§~NH— O
0 II
‘\S\
/ S
\ / \ 7\
N N
(S)(5-flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridinyl)pyrimidinylamin0)-3,3-
dimethylbutane—l-sulfonic acid (11)
Sulfonic acid, 11, was synthesized in a manner similar to Compound 25 described below,
using compound, 5721, as the starting material: 1H NMR (400 MHz, MeOD) 5 8.44 (s, 1H), 8.34
(dd, J: 9.2, 2.6 Hz, 1H), 8.22 (d, J: 5.7 Hz, 1H), 8.13 (s, 1H), 5.16 (d, J: 4.1 Hz, 1H), 3.46 -
3.33 (m, 2H), 1.10 (d, 9H); LC/MS (10-90% ACN/water 5 min with 0.9% TFA, C18) m/z 412.19
(M+H) retention time = 1.91 s.
NWNH— o
O\II
\ ‘3‘
}_/ OH
CI N
/ ¢
\ / \ 7\
N N 10
(S)((2-(5-chlor0-lH-pyrrolo [2,3-b] pyridinyl)-S-fluor0pyrimidinyl)amin0)—3,3-
dimethylbutane—l-sulfonic acid (10)
Sulfonic acid, 10, was synthesized in a manner similar to Compound 11, using 5-chloro(4,4,5 ,5 -tetramethyl-1,3 ,2-dioxaborolanyl)— 1 -tosyl- 1H-pyrrolo [2,3 -b]pyridine instead of
boronate ester, 73, as the ng material: 1H NMR (400 MHz, MeOD) 5 8.44 (s, 1H), 8.34 (dd,
J: 9.2, 2.6 Hz, 1H), 8.22 (d, J: 5.7 Hz, 1H), 8.13 (s, 1H), 5.16 (d, J: 4.1 Hz, 1H), 3.46 - 3.33
(m, 2H), 1.10 (d, 9H); LC/MS (10-90% ACN/water 5 min with 0.9% TFA, C18) m/z 412.19
(M+H) retention time = 1.91 minutes.
Pre aration 0 Com ounds 46
Synthetic Scheme 11
fé’ F F
'T i— b — o
OH c
N / NH a
>\,N \_/ N
_, I: NN 0, Ms _,
s f\ N\i/ NH
= s—/( _»
C | S H U::
C' 7\ CI 7
14a 75a 76a
F F F
NfgiNH— —
d —
e O\||
SH NfigiNH s— ‘s—
>—N\ \—/ _’ >LN \ / N/—§*NH
—> \ \ /
N
0' 7\ 0' 7‘\ 0' 7‘\
77a 78a 79a
F F
Nfg‘NH o NiNH 0*"— _ O
f 0%”
s\ g \ \
\ /
—» F N :‘—/ _. F hf
/ \
>€< \ / \ 7 \ \ / \ ; \
F Q
N N
N N
/ \ BTO
\ H
\ Ts 80a 46
/ 7a
(a) MsCl. CHzClz; (b) KOAc, DMF; (c) NaOMe, MeOH; (d) Mel, K2C03, acetone, 70 0C; (e)
Oxone, water, MeOH, 3 hr, RT; (f) 5-fluoro(p-tolylsulfonyl)—3-(4,4,5,5-tetramethyl-l,3,2-
dioxaborolanyl)pyrrolo[2,3-b]pyridine, 7a, K3P04 X-Phos, Pd2(dba)3, 2-MeTHF, water, 120
OC, 3 hr then 80 0C, 1 hr; (g) NaOMe, MeOH.
(S)—2-(2-chlor0fluor0pyrimidinylamin0)—3,3-dimethylbutyl methanesulfonate (75a).
To a cold (0 0C) solution of ((2-chlorofluoropyrimidinyl)amino)-3,3-
dimethylbutan-l-ol, 143, (1.95 g, 7.87 mmol) and triethylamine (1.37 mL, 9.84 mmol) in
dichloromethane (25 mL) was added methanesulfonyl chloride (0.76 mL, 9.84 mmol). The
solution was stirred at room temperature for 1 hour. The solvent was removed under reduced
pressure and water (100 mL) and EtOAc (50 mL) were added. The organic phase was separated,
dried (MgSO4) and concentrated under reduced pressure to afford 2.55 g of the desired t
as a pale yellow foamy solid: LC/MS (10-90% ACN/water 5 min with 0.9% FA, C4) m/Z 326.99
(M+H) RT = 2.96 mintues.
(S)-S(2-chlor0flu0r0pyrimidinylamin0)—3,3-dimethylbutyl ethanethioate (76a).
ium thioacetate (1.30 g, 11.51 mmol) was added to a stirring solution of (S)(2-
chlorofluoropyrimidinylamino)—3,3-dimethylbutyl esulfonate, 753, (2.50 g, 7.67
mmol) in dry DMF (50 mL). The ing brown solution was heated with stirring at 78 0C for
1 hour. The brown sion was poured into water and extracted with EtOAc (3x 100 mL).
The combined organic phases were dried (MgSO4), filtered and concentrated under reduced
pressure. The crude residue was purified by silica gel chromatography (0-30% EtOAc/Hexanes
gradient) to afford 2.1 g of compound 763 as a pale brown solid: 1H NMR (400 MHZ, CDClg) 5
7.81 (s, 1H), 5.12 (m, 1H), 4.21 (t, .1: 9.1 Hz, 1H), .90 (m, 2H), 2.23 (s, 3H), 0.95 (m,
9H); LC/MS (10—90% ACN/water 5 min with 0.9% FA) m/Z 306.02 (M+H) RT = 3.32 min.
(S)—2-(2-chlor0flu0r0pyrimidiny13min0)-3,3-dimethylbut3nethiol (773)
To a nitrogen-purged solution of (S)—S—2-(2-chloro-5 -fluoropyrimidinylamino)-3,3-
dimethylbutyl ethanethioate, 763, (1.00 g, 3.27 mmol) in methanol (20 mL) was added NaOMe
(1.457 mL of 25% solution in MeOH, 6.540 mmol) and the solution was stirred at room
temperature for 1 hour. The reaction e was concentrated in vacuo and the residue was
dissolved in water (25 mL) and slowly acidified with 2N HCl to give a white precipitate that was
extracted twice with EtOAc. The ed organic phases were dried (MgSO4), d and
concentrated under reduced re to afford 0.85 g of the desired product as a pale beige color
solid: LC/MS (10-90% ACN/water 5 min with 0.9% FA) m/z 264.92 (M+H) RT = 3.32 min.
(S)—2-chlor0-N—(3,3-dimethyl—1-(methylthi0)but3nyl)- 5-flu0r0pyrimidin3mine (783)
To a suspension of (S)(2-chlorofluoropyrimidinylamino)-3,3-dimethylbutane
thiol, 773, (0.85 g, 3.60 mmol) and K2C03 (2.26 g, 16.35 mmol) in e was added
iodomethane (0.82 mL, 13.08 mmol). The suspension was heated at 70 0C for 1.30 hours and
then cooled to room temperature. The solid was filtered and the solution was concentrated under
reduced pressure. The crude residue was purified by silica gel chromatography (0-10%
EtOAc/Hexanes gradient) to afford 310 mg of the desired product as a white solid: 1H NMR
(400 MHz, CDC13) 8 7.81 (s, 1H), 5.12 (m, 1H), 4.21 (t, J: 9.1 Hz, 1H), 3.15-2.90 (m, 2H), 2.23
(s, 3H), 0.95 (m, 9H); LC/MS (60-90% ACN/water 5 min with 0.9% FA) m/z 278.29 (M+H) RT
= 1.35 minutes.
(S)—2-chlor0-N—(3,3-dimethyl—1-(methylsulf0nyl)but3nyl)—5-fluoropyrimidin3mine
(793)
To a cold (0 0C) solution of (S)chloro-N-(3,3-dimethyl(methylthio)butanyl)- 5-
fluoropyrimidinamine, 783, (0.15 g, 0.54 mmol) in methanol (10 mL) was added Oxone (0.50
g, 0.81 mmol). The solution was stirred at room temperature for 3 hours. The solution was
concentrated in vacuo to give a white residue which was dissolved in water (10 mL). The
aqueous layer was extracted with EtOAc (3x10 mL). The combined organic phases were dried
(MgSO4), filtered and concentrated in vacuo to afford 150 mg of the d product as a white
solid: LC/MS (60-90% ACN/water 5 min with 0.9% FA) m/z (M+H) RT = 2.60 minutes.
(S)—N—(3,3-dimethyl(methylsulf0nyl)but3nyl)flu0r0(5-flu0r0-l-tosyl-lH-
pyrrolo[2,3-b]pyridinyl)pyrimidin3mine. (803)
A solution of (S)—2-chloro-N—(3 ,3 -dimethyl(methylsulfonyl)butanyl)-5 -
fluoropyrimidinamine, 793, (0.15 g, 0.48 mmol), 5-fiuoro(p-tolylsulfonyl)(4,4,5,5-
tetramethyl-l,3,2-dioxaborolanyl)pyrrolo[2,3-b]pyridine (0.24 g, 0.58 mmol), and K3PO4
(0.25 g, 1.16 mmol) in 2-methyl THF (5 mL) and water (1 mL) was purged with nitrogen for 30
minutes. X-Phos (0.015 g, 0.031 mmol) and a)3 (0.007 g, 0.008 mmol) were added and
the reaction mixture was heated at 120 0C in a pressure vial for 2 hours. The reaction mixture
was cooled to room temperature, filtered and trated in vacuo. The residue was dissolved
in EtOAc (50 mL) and washed with water. The organic layer was dried (MgSO4), d and
concentrated in vacuo. The crude residue was purified by silica gel chromatography (0-40%
EtOAc/Hexanes gradient) to afford 210 mg of the desired product as a white foamy solid: 1H
NMR (400 MHz, CDClg) 8 8.54 — 8.43 (m, 2H), 8.24 (d, J: 1.3 Hz, 1H), 8.09 (s, 1H), 8.03 (d, J
= 8.2 Hz, 2H), 7.23 (s, 1H), 4.99 (dt, J: 20.3, 10.1 Hz, 2H), 3.37 (d, J: 14.4 Hz, 1H), 3.07 (dt,
J: 31.3, 15.7 Hz, 1H), 2.83 (s, 3H), 2.33 (d, J: 19.0 Hz, 3H), 0.98 (d, J: 20.7 Hz, 9H); LC/MS
(10-90% ACN/water 5 min with 0.9% FA, C4) m/z 564.20 (M+H) RT = 3.70 minutes.
(3,3-dimethyl(methylsulf0nyl)butanyl)—5-flu0r0(5-flu0r0-lH-pyrrolo [2,3-
b]pyridinyl)pyrimidinamine (46)
To a solution of (3,3-dimethyl(methylsulfonyl)butanyl)fluoro(5-fluoro-
1-tosyl-1H—pyrrolo[2,3-b]pyridinyl)pyrimidinamine, 8021, (0.21 g, 0.37 mmol) in THF (10
mL) was added NaOMe (0.33 mL of 25% solution in MeOH, 1.45 mmol). The solution was
stirred at room temperature for 10 minutes, then diluted into aqueous ted NH4Cl solution.
The solvent was removed under d pressure and the residue was dissolved in water (10
mL). The aqueous layer was extracted with EtOAc (3X10 mL), dried (MgSO4), filtered and
concentrated in vacuo. The product was purified by silica gel chromatography (0-10%
MeOH/CHzClz gradient) to afford 109 mg of the desired product as a white solid: 1H NMR (400
MHz,CDC13)8 9.38 (s, 1H), 8.53 (d, J: 6.9 Hz, 1H), 8.16 (m, 2H), 8.06 (s, 1H), 5.09 - 4.89 (m,
1H), 3.42 - 3.31 (m, 1H), 3.11(m, 1H), 2.84 (s, 3H), 1.00 (s, 9H); LC/MS (10-90% ACN/water 5
min with 0.9% FA) m/z 410.19 (M+H) RT = 2.03 minutes.
Pre aration 0 Com ound 62
Synthetic Scheme 12
\ 84a N
Ts H 85a
H 62
(a) LiBH4, THF, 1N HCl; (b) 2-iodoxybenzoic acid, THF, reflux; (c) Toluene; (d) Brg, HBr,
AcOH, 65°C; (e) NaOH, hydroxyurea, MeOH.
Formation of (+/-)((5-flu0r0(5-flu0r0t0syl-lH-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)—4,4-dimethylpentan01 (823)
To a cold (0 0C) on of racemic methyl 3-((5-fluoro(5-fluorotosyl-1H-
pyrrolo[2,3-b]pyridinyl)pyrimidinyl)amino)-4,4-dimethylpentanoate (4.00 g, 7.36 mmol) in
THF (160 mL) and MeOH (10 mL) was added lithium borohydride (29.44 mL of 2 M solution,
58.87 mmol) dropwise over 30 minutes. The reaction e was slowly warmed to room
temperature and then re-cooled to 0 0C. A 1N HCl solution (294 mL, 294 mmol) was added
dropwise. The mixture was stirred for 15 minutes and then d with dichloromethane. The
phases were separated and the aqueous phase was extracted again with dichloromethane. The
combined organic phases were washed with s saturated NaHC03 solution and brine, dried
(Na2S04), filtered and concentrated in vacuo. The resulting residue was purified via silica gel
chromatography (EtOAc/Hexanes) to afford 3.79 g of the d product.
Formation of (+/-)((5-flu0r0(5-flu0r0t0syl-lH-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)-4,4-dimethylpentanal (83a)
To a solution of racemic 3-((5-fluoro(5-fiuoro-l-tosyl-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amino)-4,4-dimethylpentanol, 82a, (1.60 g, 3.10 mmol) in THF (64 mL)
was added 2-iodoxybenzoic acid (be) (3.86 g, 6.21 mmol). The on mixture was heated to
reflux under at atmosphere of nitrogen for 30 minutes. After g the mixture to room
temperature, the solids were filtered. An aqueous saturated NaHC03 solution was added to the
filtrate and the ic mixture was stirred for 30 minutes. The mixture was further diluted with
dichloromethane and the phases separated. The aqueous layer was extracted again with
dichloromethane. The combined organic phases were dried (Na2S04), filtered and concentrated
in vacuo. The resulting residue was purified via silica gel chromatography (EtOAc/Hexanes) to
afford 1.59 g of the desired product
ion of (+/-)-methyl 5-((5-flu0r0(5-flu0r0t0syl—lH-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)-6,6-dimethylhepten0ate (84a)
To a on of 3-((5-fluoro(5-fiuoro-l-tosyl-lH—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amino)-4,4-dimethylpentanal, 83a, (0.295 g, 0.574 mmol) in toluene (5.9 mL)
was added methyl 2-(triphenylphosphoranylidene)acetate (0.300 g, 0.862 mmol). The mixture
was stirred overnight at room temperature and then purified directly on silica gel
(EtOAc/Hexanes) to afford 278 mg of the desired product: LCMS Gradient 10-90%, 0.1%
formic acid, 5 minutes, N, RT = 2.54 minutes (M+H) .
ion (+/-)-methyl 2,3-dibrom0((5-flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)-6,6-dimethylheptan0ate (85a)
To a solution of racemic methyl 5-((5-fluoro(5-fluorotosyl-1H—pyrrolo[2,3-
b]pyridinyl)pyrimidinyl)amino)-6,6-dimethylheptenoate, 84a, (0.278 g, 0.476 mmol)
acetic acid (2.5 mL) was added bromine (0.099 g, 0.620 mmol) followed by HBr (0.085 mL of
.6 M solution in AcOH). The reaction mixture was heated at 65 0C overnight. The mixture was
diluted into dichloromethane and aqueous saturated sodium bicarbonate solution. The phases
were separated and the aqueous layer was washed with dichloromethane. The organic layers
were combined and the solvents were d under reduced pressure. The e was purified
via silica gel chromatography (EtOAc/Hexanes) to give the desired product: LCMS Gradient
-90%, 0.1% formic acid, 5 minutes, Cl8/ACN, RT = 3.00 minutes (M+H) 590.94.
Formation of (+/-)-5—(2-((5-flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)amin0)—3,3-dimethylbutyl)is0xazolol (62)
To a solution of NaOH (0.015 g) dissolved in water (0.410 mL) was added hydroxyurea
(0.008 g, 0.100 mmol). The resulting e was stirred for 30 minutes before the dropwise
addition of methyl 2,3-dibromo-5 -((5-fluoro(5-fluoro- 1H-pyrrolo [2,3 -b]pyridin-3 -
yl)pyrimidinyl)amino)-6,6-dimethylheptanoate, 8521, (0.064 g, 0.110 mmol) in MeOH (0.150
mL). The solution was stirred for 6 hours before the addition of AcOH (0.031 mL). The residue
was purified by reverse phase preparative HPLC to afford the desired product: 1H NMR (300
MHz, MeOD) 5 8.57 (dd, J: 9.7, 2.8 Hz, 1H), 8.16 (d, J: 5.5 Hz, 2H), 8.00 (d, J: 4.1 Hz, 1H),
.68 (s, 1H), 3.03 (ddd, J: 27.4, 15.4, 12.3 Hz, 2H), 1.10 (d, J: 3.3 Hz, 11H); LCMS Gradient
-90%, 0.1% formic acid, 5 minutes, C18/ACN, RT = 2.15 minutes (M+H) 416.04.
Pre aration 0 Com ound 45
Synthetic Scheme 13
Nf; / NH OH
\ a NWNH OH
N \
F N
N "l 82a
N N
Ts H
(a) LiOH, dioxane, H20, 100 0C.
Formation of (+/-)((5-flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)amin0)—4,4-dimethylpentan-l-ol (45)
To a solution of racemic 3-((5-fluoro(5-fluorotosyl-1H—pyrrolo[2,3-b]pyridin
imidinyl)amino)-4,4-dimethylpentanol, 8221, (0.187 g, 0.363 mmol) in dioxane (4
mL) was added LiOH (0.91 mL of 2 M solution, 1.81 mmol). The reaction mixture was heated
at 100 CC for 2 hours. The mixture was diluted with water (30 mL) and extracted twice with
EtOAc. The ed organic phases were washed with brine, dried (MgSO4), ed and
concentrated in vacuo. The crude residue was washed with Hexanes to afford 76 mg of the
desired product: 1H NMR (300 MHz, CDClg) 8 10.42 (s, 1H), 8.47 (dd, J = 9.3, 2.7 Hz, 1H),
8.13 (d, J: 11.2 Hz, 1H), 8.10 (s, 1H), 8.04 (d, J: 3.2 Hz, 1H), 4.89 (d, J: 9.0 Hz, 1H), 4.26 (t,
J: 9.9 Hz, 1H), 3.65 (d, J: 9.2 Hz, 1H), 3.54 (td, J: 11.4, 2.9 Hz, 1H), 2.17 - 1.99 (m, 1H),
1.40 (dd, J: 14.0, 11.9 Hz, 1H), 0.96 (d, J: 18.4 Hz, 9H), 0.90 - 0.73 (m, 1H); LCMS Gradient
-90%, 0.1% formic acid, 5 minutes, C18/ACN, (M+H) 362.
Pre aration 0 Com ounds 50 51 and 52
Synthetic Scheme 14
NdiNHI OH F8, “02
N\ / NH Se F8, / NH
N b N\ a /
N N
F —» —.
” F F
I \ //
\ \
\ I
\ I
N N. 823
N N 88a N N 89a
TS TS TS
N/:J/>—NH a, H
O N\ O
c F » /
—» / \ \ I
\ l \
N N
N N
\ H
TS 90a 50, 51, and 52
(a) 2-nitrophenylselenocyanate, BU3P, THF; (b) mCPBA, CHC13; (c) c)4, NZCHZCOzEt,
CHZCIZ; (d) LiOH, dioxane, H20.
Formation of (+/-)-N-(4,4-dimethyl—1-((2-nitrophenyl)selanyl)pentanyl)—5-fluoro(5-
fluoro-l-tosyl—lH-pyrrolo[2,3-b]pyridinyl)pyrimidinamine (88a)
To a solution of racemic 3-[[5-fluor0[5-flu0ro(p-tolylsulf0nyl)pyrrolo[2,3-
b]pyridinyl]pyrimidinyl]amino]-4,4-dimethyl-pentanol, 82a, (1.093 g, 2.120 mmol) and
(2-nitr0phenyl) selenocyanate (0.722 g, 3.180 mmol) in THF (8 mL) was added
tributylphosphane (0.792 mL, 3.180 mmol). The reaction mixture was stirred overnight and then
concentrated under reduced pressure. The crude residue was purified by silica gel (0 to 100%
EtOAc/Hexanes gradient) to afford 1.20 g of the desired product.
Formation of (+/-)-N-(4,4-dimethylpent—1-enyl)fluoro(5-fluorotosyl—1H-
pyrrolo[2,3-b]pyridinyl)pyrimidinamine (89a)
To a cold (0 0C) solution of racemic N—(4,4-dimethyl((2-nitr0phenyl)selanyl)pentan
yl)fiu0r0(5-fiu0rot0syl-1H—pyrrolo[2,3-b]pyridinyl)pyrimidinamine, 88a, (1.01 g,
1.45 mmol) in chloroform (15 mL) was added mCPBA (0.40 g of 77%, 1.79 mmol). After
ng for 1 hour at room temperature, the mixture was diluted with romethane (100 mL)
and the resulting solution was washed with aqueous sodium bicarbonate solution. The organic
phase was dried (MgSO4), d and trated in vacuo. The crude residue was purified by
silica gel chromatography (0 to 100% EtOAc/Hexanes) to afford 623 mg of the desired product:
LCMS Gradient , 0.1% formic acid, 5 minutes, C18/ACN, (M+H) 496.76.
Formation of 2-(1-((5-fluoro(5-fluoro-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)amino)-2,2-dimethylpropyl)cyclopropanecarboxylic acid (50, 51, and 52)
To racemic N—(4,4-dimethylpenten-3 -yl)fluor0(5-fiu0rot0syl- 1H-pyrrolo [2,3 -
b]pyridinyl)pyrimidinamine, 89a, (0.105 g, 0.211 mmol) and rhodium(II) acetate (0.019 g,
0.042 mmol) in dichloromethane (6.2 mL) was added dropwise a solution of ethyl 2-diaz0acetate
(0.181 g, 0.166 mL, 1.582 mmol) in 2 mL romethane over 30 minutes. )2 (0.019 g,
0.042 mmol) in dichloromethane (2 mL) was added followed by ethyl 2-diaz0acetate (0.181 g,
0.166 mL, 1.582 mmol) in dichloromethane (2 mL) dropwise. The reaction was stirred overnight
and the solvent was concentrated in vacuo. The resulting crude residue was purified by silica gel
chromatography (0 to 100% EtOAc/Hexanes gradient) to afford a racemic mixture of
diasteromeric esters, 90a. The mixture of esters was dissolved in dioxane (2 mL) and 2N LiOH
(1 mL). After heating at 100 0C for 2 h and g to room temperature, the mixture was
acidified pH 6.5 with 2N HCl. The s phase was extracted twice with EtOAc and once
with romethane. The combined organic phases were dried (MgSO4), filtered and
concentrated under reduced pressure. The crude residue was subjected to silica gel
chromatography (0-20% MeOH/EtOAc gradient) to isolate the mixture of diastereomeric acids,
which were further purified by preparatory HPLC (CH3CN/H20 — TFA modifier) to afford 3
diastereomers. Two of the diastereomers, 51 and 52, were isolated as a single diastereomer each.
The third diastereomer, 50, was isolated as a mixture of diastereomers. All three diastereomers
showed same LCMS: LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, (M+H)
402.45.
1St fiaction - a mixture of diastereomers with 4 peaks at 1.8, 1.9, 2.06 and 2.16 minutes —contains
211d fraction - single peak at 2.06 s- (51)
3rd fraction — single peak at 2.16 minutes- (52)
Pre aration 0 Com ound 41
Synthetic Scheme 15
NH NH
—— 2
NC \ / C' NCQ OH
———————>
N Cl
0' OH
b F
9W ’—
NC \ /
N OH
B’0 F
Fm /
7a \ I
N N N N
Ts H 41
(a) iPerEt, EtOH, 75 0C; (b) Pd2(dba)3, XPhos, K3PO4, THF, H20, 135 0C, microwave.
ion of 2-chlor0flu0r0(1-hydroxy-4,4-dimethylpentanylamin0)pyridine-
3-carb0nitrile (953)
To a solution of 3-amino-4,4-dimethylpentanol (2.00 g, 8.64 mmol) in ethanol (20
mL) was added racemic 2,6-dichlorofiuoro-pyridinecarbonitrile (1.65 g, 8.64 mmol) and 5
mL of N,N,-diisopropylethylamine. The solution was stirred at 75 CC for 12 hours and
concentrated in vacuo. The residue was purified by silica gel chromatography (methylene
chloride), yielding 2.2 g of rofluoro(1-hydroxy-4,4-dimethylpentan
ylamino)pyridinecarbonitrile, 953: LCMS nt 10-90%, 0.1% formic acid, 5 minutes,
C18/ACN, RT = 3.02 minutes (M+H) 286.16
Formation of 5-fluoro-Z-(S-fluoro-lH-pyrrolo[2,3-b]pyridinyl)—6-(1-hydroxy-4,4 -
dimethylpentanylamino)pyridinecarbonitrile (41)
To a racemic solution of 2-chlorofluoro(1-hydroxy-4,4-dimethylpentan
ylamino)pyridinecarb0nitrile, 95a, (0.20 g, 0.70 mmol) and 5-fluor0(4,4,5,5-tetramethyl-
1,3,2-dioxab0rolanyl)t0syl-1H—pyrrolo[2,3-b]pyridine, 7a, (0.44 g, 1.05 mmol) in THF (15
mL) was added a solution of potassium phosphate (0.45 g) in 3 mL of water. The resulting
mixture was degassed under a stream of nitrogen for 15 minutes. To the mixture was then added
X-Phos (0.03 g, 0.07 mmol) and Pd2(dba)3 (0.02 g, 0.04 mmol). The reaction was warmed to
135 CC Via microwave irradiation for 15 minutes and then extracted into EtOAc (3 x 15 mL) vs.
water. The organic layers were combined and trated in vacuo to a dark oil which was
redissolved in 20 mL of THF. To the solution was added 5 mL of 2 N LiOH and the reaction
was warmed to 65 0C for 12 hrs and then concentrated in vacuo. The resulting residue was
purified Via silica gel tography (EtOAc) to afford 108 mg of the desired product, 41, as a
yellow solid: 1H NMR (300 MHz, d6-DMSO) 8 12.40 (s, H), 8.63 (dd, J = 2.8, 10.1 Hz, H),
8.37 - 8.32 (m, H), 7.83 (d, J: 11.4 Hz, H), 7.31 (d, J: 9.7 Hz, H), 4.56 - 4.50 (m, H), 4.41 (dd,
J: 4.1, 5.2 Hz, H), 3.69 (s, H), 3.57 (s, H), 3.49 (t, J: 6.6 Hz, H), 3.48 (s, H), 3.36 - 3.28 (m,
H), 2.50 (qn, J: 1.8 Hz, H), 1.86 - 1.67 (m, 2 H), 1.21 (dd, J: 7.0, 16.1 Hz, H) and 0.94 (s, 9 H)
ppm; LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, RT = 3.09 minutes
(M+H) 386.39.
Pre aration 0 Com ounds II 24 25 26 27 28 29 30 and 31
tic Scheme 16
F F
H2N OH _
3 b
_. NH OH NC NH
NC pH
\ N \
F [\1
7\ 5‘ / 3~
0| 7\ F O>§< \ / \ 7
97a /’\ 8‘0
\ N 98a
N 73
N T8
F F
— 0
d No \N 9
F \N NH\_/OMs N\H
F /S_< NC \ / NH 0*é’a
OH —’
/ s / 3‘ —> F N §—’
\ / \ Z \
\ l \ 7 \ 7‘\
N N \// \
N N
\T 99a \ 100a N N
8 T3 \
101a
O — o
— O I]
\ NC NH e /
f NC \ / NH mél‘m 9 \ / S‘N
F N ~‘
\ —» H
—> N
/ 5 /
;\ \
\ / \ 7\ \ /
N N
"1‘ H
Ts 102a 26
(a) 2-chlor0-5,6-diflu0r0pyridinecarb0nitrile, lPerEt,THF, MeOH, 95 0C; (b) 5-fluor0-l-(ptolylsulfonyl
)—3-(4,4,5,5-tetramethyl-1,3,2-di0xaborolanyl)pyrrolo[2,3-b]pyridine, 7a, K3P04,
X-Phos, Pd2(dba)3, 2-Me THF, water, 120 0C; (c) MsCl. CH2C12; (d) KOAc, DMF, 80 0C; (e)
% H202, HCOOH; (f) 2, DMF, CHzClz. (g) i. Amine, THF; ii. 4M HCl, CH3CN, 65 0C.
(S-Z-chloro-S-fluoro((1-hydr0xy-3,3-dimethylbutan-Z-yl)amin0)nic0tin0nitrile (973).
A mixture of ro-5,6-difiuoropyridinecarbonitrile (6.52 g, 34.13 mmol), (2S)
amino-3,3-dimethyl-butanol (4.00 g, 34.13 mmol) and triethylamine (9.51 mL, 68.26 mmol)
in CH3CN (50 mL) and THF (50 mL) was heated at 80 0C for 4 hours. The mixture was cooled
to room temperature and the solvent was ated under reduced pressure. The crude t
was purified via silica gel chromatography (0-60% EtOAc/Hexanes gradient) to afford 6.7 g of
the desired product as an off white solid: 1H NMR (400 MHz, CDClg) 8 7.25 (d, J = 9.7 Hz,
1H), 5.32 (m, 1H), 4.19-4.08 (m, 1H), 3.95-3.83 (m, 1H), 3.74 -3.51 (m, 1H), 0.92 (s, 9H);
LC/MS (60-90% ACN/water 5 min with 0.9% FA) m/z 272.02 (M+H), retention time 1.02
minutes.
(S)—5-flu0r0(5-flu0r0t0syl-1H-pyrrolo[2,3-b]pyridinyl)—6-((1-hydr0xy-3,3-
dimethylbutan-Z-yl)amin0)nic0tin0nitrile (98a).
A solution of 5-fiuoro(p-tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-dioxaborolan
yl)pyrrolo[2,3-b]pyridine, 7a, (1.84 g, 4.42 mmol), (S)chlorofiuoro((1-hydroxy-3,3-
dimethylbutanyl)amino)nicotinonitrile, 9721, (1.00 g, 3.68 mmol) and K3PO4 (2.40 g, 11.22
mmol) in 2-methyl-THF (12 mL) and water (2 mL) was purged with nitrogen for 30 minutes. X-
Phos (0.14 g, 0.294 mmol) and Pd2(dba)3(0.07 g, 0.07 mmol) were added and the reaction
mixture was heated at 120 0C in a pressure vial for 2 hours. The reaction mixture was cooled to
room ature, filtered and concentrated in vacuo. The residue was dissolved in EtOAc (50
mL) and washed with water. The organic layer was dried (MgSO4), filtered and concentrated in
vacuo. The crude product was purified by silica gel chromatography (0-40% EtOAc/Hexanes
nt) to afford 1.88 g as a foamy solid: 1H NMR (300 MHZ, CDClg) 5 8.64 (s, 1H), 8.36 (d,
J: 2.0 Hz, 1H), 8.26 (m, 1H), 8.14 (d, J: 8.4 Hz, 2H), 7.46 (d, J: 12 Hz, 2H), 7.33 (d, J: 7.5
Hz, 1H), 5.34 (m, 1H), 4.42-4.31 (m, 1H), 4.02 (m, 1H), 3.75 (m, 1H), 2.40 (s, 3H), l.26(s, 9H);
LC/MS (60-90% ACN/water 5 min with 0.9% FA, C4) m/Z 526.49 (M+H), retention time = 1.83
minutes.
(S)((5-cyan0flu0r0(5—flu0r0tosyl—lH-pyrrolo [2,3-b]pyridinyl)pyridin
n0)—3,3-dimethylbutyl methanesulfonate (993).
To a cold (0 0C) solution of (S)—5-fiuoro(5-fiuorotosyl-1H—pyrrolo[2,3-b]pyridin
yl)((1-hydroxy-3,3-dimethylbutanyl)amino)nicotinonitrile, 9821, (3.77 g, 7.17 mmol) and
triethylamine (1.25 mL, 8.96 mmol) in dichloromethane (75 mL) was added methanesulfonyl
chloride (0.69 mL, 8.96 mmol). The solution was stirred at room temperature for 1 hour. The
t was removed under reduced pressure and water (100 mL) and EtOAc (200 mL) were
added. The organic phase was separated, dried (MgSO4), filtered and concentrated under
d re to afford 4.22 g of the desired product as a yellow foamy solid that was used
without further purification: LC/MS (60-90% ACN/water 5 min with 0.9% FA, C4) m/Z 604.45
(M+H) retention time = 2.03 minutes.
(S)(5-Cyan0flu0r0(5-flu0r0tosyl—1H-pyrrolo [2,3-b] pyridin-Zylamino)—3,3-
dimethylbutyl thiolate (1003).
Potassium thioacetate (1.2 g, 10.5 mmol) was added to a on of (S)((5-cyano
fiuoro(5-fiuorotosyl- 1H-pyrrolo [2,3 -b]pyridin-3 -yl)pyridinyl)amino)-3 ,3 -dimethylbutyl
methanesulfonate, 993, (4.22 g, 6.99 mmol) in dry DMF (90 mL). The brown solution was
heated with stirring at 80 0C for 1 hour. The thick brown suspension was poured into water and
extracted with EtOAc (3x 100 mL). The organic layers were dried (MgSO4), filtered and
concentrated under reduced pressure. The crude product was purified by silica gel
chromatography (0-30% EtOAc/Hexanes gradient) to afford 6.8 g of the desired product as a
pale brown solid: 1H NMR (400 MHz, CDC13)5 8.57 (s, 1H), 8.28 (d, J: 1.3 Hz, 1H), 8.11 (dd,
J: 8.5, 2.3 Hz, 1H), 8.05 (d, J: 8.3 Hz, 2H), 7.33 (d, J: 10.2 Hz, 1H), 7.24 (d, J = 8.3 Hz, 2H),
.11 (m, 1H), 4.31 (m, 1H), 3.19 (dd, J = 14.0, 3.0 Hz, 1H), 3.03 (dt, J: 13.6, 6.9 Hz, 1H), 2.31
(s, 3H), 2.10 (m, 3H), 10.97(s, 9H); LC/MS (60-90% ACN/water 5 min with 0.9% FA) m/z
584.0 (M+H) retention time = 2.66 minutes.
(S)(5-Cyan0flu0r0(5-flu0r0tosyl—1H-pyrrolo[2,3-b]pyridin-Zylamino)—3,3-
dimethylbutane—l-sulfonic acid (101a).
To a cold (0 0C) solution of formic acid (22.2 mL, 588.5 mmol) was added H202 (7.35
mL of 30% solution, 71.96 mmol). The mixture was stirred at 0 0C for 1 hour. A solution of (S)-
S—2-(5-cyanofluoro(5-fluorotosyl-1H—pyrrolo[2,3-b]pyridin-2ylamino)-3 ,3 -
dimethylbutyl ethanethiolate, 993, (1.5 g, 2.57 mmol) in formic acid (5 mL) was added dropwise
to the reaction mixture. The resulting solution was stirred for 2 hours at room temperature. The
solvent was removed under reduced pressure 1.72 g of the desired sulfonic acid as a pale yellow
foamy solid: LC/MS % ACN/water 5 min with 0.9% FA) m/z 586 (M+H) retention time
= 3.95 s.
(S)(5-Cyan0flu0r0(5-flu0r0tosyl—1H-pyrrolo[2,3-b]pyridin-Zylamino)—3,3-
ylbutane—l-sulfonyl chloride (1023).
To a solution of (5-cyanofluoro(5-fluorotosyl-1H—pyrrolo[2,3-b]pyridin-
2ylamino)-3,3-dimethylbutanesulfonic acid, 10121, (1.5 g, 2.54 mmol) and DMF (0.5 mL) in
dichloromethane (30 mL) was added oxalyl dichloride (0.68 mL, 7.63 mmol) dropwise. The
solution was stirred at room temperature for 1 hour. The solvent was removed under reduced
re to afford 1.6 g of the desired t as a yellow solid: LC/MS (60-90% ACN/water 5
min with 0.9% FA) m/z 608 (M+H) retention time = 2.40 s.
(S)—2-(5-Cyan0flu0r0(5-flu0r0-lH-pyrrolo [2,3-b] pyridinyl)pyridin-2ylamin0)—
N,3,3-trimethylbutane—l-sulfonamide (26)
Methyl amine (0.41 mL of 2M solution, 0.82 mmol) was added to a solution of (S)—2-(5-
cyanofluoro(5-fluorotosyl-1H—pyrrolo[2,3-b]pyridin-2ylamino)-3 ethylbutane
sulfonyl chloride, 1023, (0.10 g, 0.16 mmol) in THF (1 mL). The solution was stirred for 1 hour
at room ature and the solvent was removed under reduced pressure. The crude
sulfonamide was dissolved in CH3CN (3 mL) and HCl (2 mL of 4M solution in dioxane) was
added. The reaction mixture was heated at 65 0C for 3 hours and then cooled to room
temperature. The solvent was removed under reduced pressure and the resulting residue was
purified by preparative HPLC tography (10-80% CH3CN/water, 0.5% TFA, 15 min) to
afford 26 mg of the desired product as a white solid: 1H NMR (400 MHz, CDClg) 5 9.68 (s, 1H),
8.45 - 8.33 (m, 1H), 8.17 (d, J: 2.8 Hz, 1H), 7.88 (s, 1H), 7.36 (d, J: 10.3 Hz, 1H), 6.47 (d, J:
4.9 Hz, 1H), 5.11 (d, J: 7.8 Hz, 1H), 4.90 (d, J: 10.4 Hz, 1H), 3.52 (s, 1H), 3.04 (dd, J: 15.0,
.5 Hz, 1H), 2.67 (d, J: 5.0 Hz, 3H), 1.02 (s, 9H); LC/MS (10-90% ACN/water 5 min with
0.9% FA) m/Z 449.22 (M+H) retention time = 2.97 minutes.
The following compounds can be prepared in a similar fashion as the procedure bed
above for Compound 26:
2012/049097
(S)—2-(5-Cyan0flu0r0(5-flu0r0-lH-pyrrolo [2,3-b]pyridinyl)pyridin-2ylamin0)-
N,N,3,3-tetramethylbutane—l-sulfonamide (27)
1H NMR (400 MHz, CDC13) 5 8.59 (dd, J: 9.7, 2.6 Hz, 1H), 8.38 (s, 1H), 8.21 (s, 1H), 7.31 (m,
1H), 5.12 (brs, 1H), 4.97 (brs, 1H), 3.33 (m, 1H), 2.70 (s, 6H), 0.95 (m, 9H); LC/MS (10-90%
ACN/Water 5 min with 0.9% FA) m/z 463.49 (M+H) retention time = 3.12 minutes.
_ 0 »
O\II
NC \ / NH ‘S\
F N §—/ H
/ S
\ / \ ;\
N N
(S)—2-(5-Cyan0flu0r0(5-flu0r0-lH-pyrrolo ] pyridinyl)pyridin-2ylamin0)—N-
cyclopropyl—3,3-dimethylbutane—l-sulfonamide (28)
LC/MS (10-90% ACN/Water 5 min With 0.9% FA) m/z 475.0 (M+H) retention time = 3.12
minutes.
— O 0\
NC \ , NH 0*3'LNN
F N }—/ H
/ S
\ / \ 2 \
N N
(S)((5-cyan0flu0r0(5—flu0ro-lH-pyrrolo [2,3-b]pyridinyl)pyridinyl)amino)—N—
(2-meth0xyethyl)—3,3-dimethylbutane—l-sulfonamide (29)
1H NMR (400 MHz, MeOD) 8 8.71 (dd, J: 9.7, 2.6 Hz, 1H), 8.37 (s, 1H), 8.20 (s, 1H), 7.57 (d,
J: 10.9 Hz, 1H), 5.08 (d, J: 8.8 Hz, 1H), 3.54 - 3.40 (m, 2H), 3.32 (m, 5H), 3.15 (t, J = 5.4 Hz,
2H), 1.03 (s,9H); LC/MS (10-90% ACN/water 5 min with 0.9% FA) m/z 493.50 (M+H)
retention time = 3.05 minutes.
(S)((5-cyan0flu0r0(5—flu0ro-lH-pyrrolo [2,3-b]pyridinyl)pyridinyl)amino)—3,3-
dimethyl-N-propylbutane—1-sulf0namide (31)
LC/MS (10-90% ACN/water 5 min with 0.9% FA) m/z 477.65 (M+H) retention time = 3.27
minutes.
_ o
O\II
NC \ NH \
F N/ /3
\\ NH2
/ §
\ / \ 7\
N N
(S)((5-cyan0flu0r0(5—flu0ro-lH-pyrrolo [2,3-b]pyridinyl)pyridinyl)amino)—3,3-
dimethylbutane—1-sulf0namide (30)
LC/MS (10-90% ACN/water 5 min with 0.9% FA) m/z 435.46 (M+H) retention time = 2.80
minutes.
NC \ / NH OH
F N 9—’
/ S
\ / \ 7\
N N
(S)flu0r0(5-flu0r0—1H-pyrrolo[2,3-b]pyridinyl)—6-((1-hydr0xy-3,3-dimethylbutan
yl)amin0)nic0tin0nitrile (24)
Alcohol, 24, was synthesized in a manner similar to compound 32 utilizing the same
deprotection ure, starting with compound 983: 1H NMR (400 MHz, CDClg) 8 10.27 (hrs,
1H), 8.25 (d, J: 9.4 Hz, 1H), 8.17 (s, 1H), 8.11 (s, 1H), 7.23 (d, J: 10.3 Hz, 1H), 5.20 (d, J:
9.6 Hz, 1H), 4.41 (t, J: 7.4 Hz, 1H), 4.09 (d, J: 11.3 Hz, 1H), 3.82 - 3.58 (m, 1H), 0.99 (d, J:
19.5 Hz, 9H).
— O
0 ll
NC / NH \\S\
/ S
\ / \ ;\
N N
(5-cyan0flu0r0(5-flu0ro-lH-pyrrolo [2,3-b] pyridinyl)pyridinylamino)—3,3-
dimethylbutane—1-sulf0nic acid (25)
To a solution of (S)((5-cyanofluoro(5-fluorotosyl-1H—pyrrolo[2,3-b]pyridin
yl)pyridinyl)amino)-3,3-dimethylbutanesulfonic acid, 1013, (0.12 g, 0.21 mmol)in CH3CN
(5 mL) was added HCl (2 mL of4M solution in dioxane). The reaction mixture was heated at
100 0C for 18 hours in a pressure vial and then cooled to room temperature. The solvent was
d under reduced pressure and the product was purified by preparative HPLC
chromatography (10-80% water, 0.5% TFA, 15 min) to give 42 mg of the desired
2012/049097
t as an off-White solid: 1H NMR (400 MHZ, MeOD) 5 8.44 (s, 1H), 8.34 (dd, J: 9.2, 2.6
Hz, 1H), 8.22 (d, J: 5.7 Hz, 1H), 8.13 (s, 1H), 5.16 (m, 1H), 3.46 - 3.33 (m, 3H), 1.10 (s, 9H);
LC/MS (10-90% ACN/Water 5 min with 0.9% TFA, C18) m/z 449.22 (M+H).
NiNH— O
O\II
// S
\ / \ 7\
N N
(S)((5-flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridinyl)pyrimidinyl)amino)—3,3-
dimethylbutane-l-sulfonic acid (11)
Sulfonic acid, 11, was synthesized in a manner similar to compound 30, using compound
57a: 1H NMR (400 MHz, MeOD) 8 8.44 (s, 1H), 8.34 (dd, J: 9.2, 2.6 Hz, 1H), 8.22 (d, J: 5.7
Hz, 1H), 8.13 (s, 1H), 5.16 (d, J: 4.1 Hz, 1H), 3.46 - 3.33 (m, 2H), 1.10 (d, 9H); LC/MS (10-
90% ACN/Water 5 min with 0.9% TFA, C18) m/z 412.19 (M+H) retention time = 1.91 minutes.
Pre aration 0 Com ounds 62 87 and 88
Synthetic Scheme 17
o x— o /—
O b C 0 d
O a
—> \ O
/Ph3P
111a M
112a 113a /0 114a
Cle N/ F
/ /
Bn HO (3 0 CIA/
0 N O
—> —>
—> —,
116a
115a 117a 118a
/ O /
i f=i;_ f=i;_
N/gjofij Kl
N/NH0_,
119a 120a
W0 2013/019828
(a) LDA, Mel, THF; (b) LiAlH4, ether; (c) PCC, ; (d) 2-(triphenylph0sph0ranylidene
te, CHzClz; (e) N—benzylhydroxylamine-HCl, ; (f) H2, Pd/C, MeOH; (g)
AcCl, MeOH, reflux; (h) 2,4-dichlor0flu0r0pyrimidine, Eth, EtOH, THF, 55 0C; (i) 5-flu0r0-
1-(p-tolylsulfonyl)-3 -(4,4,5 ,5 -tetramethyl-1,3 ,2-di0xaborolanyl)pyrrolo- [2,3 -b]pyridine, 7a,
Pd2(dba)3, XPhos, K3P04, F, H20, 115 0C; (j) HCl, dioxane, acetonitrile, 65°C; (k)
LiOH, THF, H20, 50°C.
Formation of ethyl 1-methylcyclobutanecarboxylate (111a)
A solution of ethyl cyclobutanecarboxylate (20.0 g, 156.0 mmol) in THF (160 rnL) was
added dropwise to a cold (-78 0C) solution of LDA (164 mmol of 2M solution) in THF (40 rnL).
The on was warmed to 0 0C and then cooled again to -40 0C before the addition of
iodornethane (10.2 rnL, 163.8 mmol). The solution was slowly warmed to room temperature and
stirred overnight. The reaction was quenched with an aqueous saturated solution of ammonium
chloride and ether was added. The layers were separated and the aqueous layer was washed with
ether. The combined organic layers were washed with 1N HCl then dried over MgSO4. The
product was purified by distillation: 1H NMR (400 MHz, MeOD) 5 4.20 — 4.05 (m, 2H), 2.57 —
2.33 (m, 2H), 2.08 — 1.94 (m, 1H), 1.94 — 1.77 (m, 3H), 1.40 (s, 3H), 1.27 (tt, J: 7.1, 1.5 Hz,
3H).
Formation of (1-methylcyclobutyl)methanol (112a)
m aluminum hydride (2.1 g, 59.4 mmol) was suspended in ether (150 rnL) and
cooled to 0 0C. A solution of ethyl 1-methylcyclobutanecarboxylate, 111a, (13.0 g, 91.4 mmol)
in ether (60 rnL) was added dropwise to the LiAlH4 suspension. The mixture was stirred 2 hours
in an ice bath then quenched slowly with 1N HCl. The layers were separated and the aqueous
layer was washed with ether. The combined c layers were washed with brine and the
volatiles were removed with a gentle stream of en to afford the desired t that was
used without filrther purification: 1H NMR (400 MHZ, CDClg) 5 3.54 — 3.39 (m, 4H), 1.99 —
1.74 (m, 8H), 1.74 — 1.62 (m, 4H), 1.46 — 1.18 (m, 3H), 1.13 (d, J: 1.7 Hz, 6H).
Formation of 1-methylcyclobutanecarbaldehyde (113a) and methyl 3-(1-
methylcyclobutyl)acrylate (1 14a)
A on of (1-methylcyclobutyl)methanol, 112a, (1.00 g, 9.98 mmol) in
dichloromethane (25 rnL) was added to a suspension of FCC (2.69 g, 12.50 mmol) and Celite
(2.70 g) in romethane (25 rnL). The reaction mixture was stirred 2 hours and filtered
through a pad of silica gel (eluting with dichloromethane). The solvents were removed with a
stream of nitrogen until volume was approximately 20 mL. 2-(triphenylphosphoranylidene
)acetate (0.98 g, 10.00 mmol) was added in one portion and the mixture was
stirred for 7 hours. The volatiles were removed under reduced pressure and a solution of 10%
Hexanes/ether was added. The resulting solid was filtered off and discarded. The resulting
solution was poured directly on silica gel and eluted with EtOAc/Hexanes to afford the desired
product: 1H NMR (400 MHz, CDClg) 8 7.05 (d, J: 15.8 Hz, 1H), 5.66 (dd, J: 15.8, 1.3 Hz,
1H), 4.21 — 4.00 (m, 2H), 2.12 — 1.73 (m, 7H), 1.29 — 1.17 (m, 6H).
Formation (+/-)benzyl(1-methylcyclobutyl)isoxazolidinone (115a)
N—benzylhydroxylamine (hydrochloric acid) (0.28 g, 1.80 mmol) and triethylamine (0.28
mL, 2.00 mmol) were added to a solution of methyl 3-(1-methylcyclobutyl)acrylate, 114a, (0.26
g, 1.50 mmol) in dichloromethane (9.5 mL). The on mixture was stirred at 50 0C
ght. The reaction mixture was cooled to room temperature and the mixture was diluted
with dichloromethane and water. The layers were separated with a phase separator and the
aqueous layer was washed with dichloromethane. The organic layers were combined and the
les d under d pressure. The residue was purified on silica gel
(EtOAc/Hexanes) to afford the desired product as a racemic mixture: LCMS Gradient 10-90%,
0.1% formic acid, 5 minutes, C18/ACN, RT = 1.47 minutes (M+H) 246.10.
Formation of (+/-)amin0(1-methylcyclobutyl)pr0pan0ic acid (116a)
A solution of racemic 2-benzyl(1-methylcyclobutyl)isoxazolidinone, 115a, (0.18 g,
1.28 mmol) in MeOH (2.9 mL) was shaken overnight under 50 psi hydrogen in the presence of
50 mg palladium hydroxide catalyst. The mixture was filtered through Celite and the volatiles
were removed under reduced pressure to afford the desired product that was used without
further purification: 1H NMR (400 MHZ, MeOD) 5 3.42 (dd, J = 11.0, 1.9 Hz, 1H), 2.26 (ddd, J
= 27.8, 16.7, 6.5 Hz, 2H), 1.86 (dddd, J: 36.9, 26.3, 11.2, 7.6 Hz, 6H), 1.18 (s, 3H).
Formation of (+/-)-methyl 3-((2-chlor0fluor0pyrimidinyl)amin0)(1-
methylcyclobutyl)pr0panoate (1 18a)
Racemic 3-amino(1-methylcyclobutyl)propanoic acid, 116a, (2.3 g, 14.4 mmol) was
dissolved in methanol (104 mL). The on was cooled in an ice bath and acetyl de (5.6
g, 71.9 mmol) was added dropwise (Temp kept <10 0C). The reaction mixture was heated to 65
OC and stirred at that temperature for 3 hours. The reaction mixture was cooled to room
temperature and then flushed with e to remove volatiles. Crude racemic oxy(1-
methylcyclobutyl)oxopropanaminium chloride, 117a, was used without further
purification.
Racemic 3-methoxy(1-methylcyclobutyl)oxopropanaminium chloride, 117a,
(3.3 g, 15.9 mmol) was dissolved in a mixture of 59 mL THF and 6.6 mL EtOH and the solution
was cooled in an ice bath. 2,4-Dichlorofluoro-pyrimidine (2.9 g, 18.0 mmol) was added
followed by dropwise addition of triethylamine (5.1 g, 51.0 mmol). The reaction mixture was
stirred at 55 0C for 17 hours. The reaction mixture was cooled to room temperature after which
water and dichloromethane were added. The phases were separated and the aqueous layer was
washed with dichloromethane. The organic layers were combined and washed with brine. The
solvents were removed and the residue was purified Via silica gel chromatography
/Hexanes) to afford the desired t: LCMS Gradient 10-90%, 0.1% formic acid, 5
minutes, C18/ACN, RT = 3.23 minutes (M+H) .
Formation of (+/-)-methyl 3-((5-flu0r0(5-flu0r0t0syl-lH-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)(1-methylcyclobutyl)propanoate (1 19a)
A solution of 5-fluoro(p-tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-dioxaborolan
yl)pyrrolo[2,3-b]pyridine, 7a, (3.31 g, 7.95 mmol), c methyl chloro
fluoropyrimidinyl)amino)(1-methylcyclobutyl)propanoate, 118a, (2.00 g, 6.63 mmol) and
K3PO4 (4.22 g, 20.00 mmol) in 2-MeTHF (253 mL) and water (56 mL) was purged with nitrogen
for 0.75 h. XPhos (0.38 g, 0.80 mmol) and Pd2(dba)3 (0.15 g, 0.17 mmol) were added and the
reaction mixture was stirred at 115 0C in a sealed tube for 2 hours. The reaction mixture was
cooled and the aqueous phase was removed. The organic phase was filtered through a pad of
Ce1ite and the mixture was concentrated to dryness. The residue was purified via silica gel
chromatography (EtOAc/Hexanes) to afford the desired product: LCMS Gradient 10-90%, 0.1%
formic acid, 5 minutes, C18/ACN, RT = 2.32 minutes (M+H) 556.44.
Formation of (+/-)-methyl 3-((5-flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)(1-methylcyclobutyl)propanoate (120a)
To a racemic solution of methyl fluoro(5-fiuorotosyl-1H-pyrrolo[2,3-
b]pyridinyl)pyrimidinyl)amino)(1-methylcyclobutyl)propanoate, 119a, (3.3 g, 5.9
mmol) in acetonitrile (25 mL) was added HCl (26 mL of 4N solution in dioxane). The reaction
e was heated to 65 0C for 4 hours. The solution was cooled to room ature and the
solvents were removed under reduced re. The mixture was flushed with acetonitrile after
which aqueous sodium onate and ethyl e were added. The phases were separated
and the aqueous layer washed with ethyl acetate. The combined organic phases were dried with
Na2S04, filtered and concentrated in vacuo. The resulting residue was purified via silica gel
tography (EtOAc/Hexanes) to afford the desired product: LCMS Gradient 10-90%, 0.1%
formic acid, 5 minutes, N, RT = 2.34 minutes (M+H) 403.11.
Formation of 3-((5-flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)amino)—3-(1-methylcyclobutyl)pr0pan0ic acid (87 and 88)
To a solution of methyl 3-((5-fiuoro(5-fiuoro-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amino)(1-methylcyclobutyl)propanoate (11) (1.75 g, 4.36 mmol) in THF
(25 mL) was added aqueous 1N LiOH (13.1 mL). The mixture was heated to 50 0C for 3.5
hours. The reaction mixture was cooled to room temperature and diluted with water. The THF
was removed under reduced pressure and the residue was then flushed twice with s. Ether
was added and the layers separated (the ether layer was ded). The pH was adjusted to 5.5
with 1N HCl and the resulting solid was filtered and washed with water. The solid was flushed
with heptanes and dried over P205 to give the desired product: 1H NMR (400 MHz, DMSO) 8
12.17 (d, J: 60.2 Hz, 2H), 8.59 (d, J: 8.4 Hz, 1H), 8.39 — 8.05 (m, 3H), 7.52 (s, 1H), 5.00 (s,
1H), 2.23 (d, J: 7.7 Hz, 1H), 2.00 (s, 1H), 1.81 (d, J: 48.3 Hz, 2H), 1.62 (s, 1H), 1.46 (s, 1H),
1.21 (s, 3H); LCMS nt 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, RT = 2.08
minutes (M+H) 388.46. The racemic mixture was submitted to SFC chiral separation to obtain
the individual enantiomers, 87 and 88.
Pre aration 0 Com ound 65
Synthetic Scheme 18
WO 19828
@3fowfl;A’Za/
124a
F87 F Jk
H2N ,OH N
_ N//$*NH_, ‘0
/ NH
N\ N \
C \
F N
/ —, F
\ /
\ I \
\ I
N N
H N N
H 65
125a
(a) AlMCg, NH4Cl, toluene; (b) hydroxylamine, DMSO, 140 0C; (c) CD1, 1PerEt, THF.
Formation of (+/-)((5-flu0r0(5-flu0r0t0syl-lH-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amin0)-4,4-dimethylpentanenitrile (124a)
Ammonium chloride (0.12 g, 2.30 mmol) was ded in e (4.5 mL). The
mixture was cooled in an ice bath and AlMe3 (1.15 mL of a 2 M solution in toluene, 2.30 mmol)
was added dropwise. The mixture was stirred 30 minutes and another 30 min at room
temperature. A solution of racemic methyl 3 -[[5 -fluoro [5 -fiuoro(p-
tolylsulfonyl)pyrrolo[2,3-b]pyridinyl]pyrimidinyl]amino]-4,4-dimethyl-pentanoate (0.25 g,
0.46 mmol) in 4.5 mL toluene was added and the resulting mixture was stirred 60 0C overnight.
The reaction mixture was cooled in an ice bath and quenched with 1N HCl. The mixture was
ted with dichloromethane and filtered through a phase tor. The residue was purified
on silica gel (EA/Hex): LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, RT =
2.04 minutes (M+H) 511.42.
Formation of (+/-)((5-flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)amin0)-N'-hydr0xy-4,4-dimethylpentanimidamide (125a)
To a solution of racemic 3-[[5-fluoro[5-fluoro(p-tolylsulfonyl)pyrrolo[2,3-
b]pyridinyl]pyrimidinyl]amino]-4,4-dimethyl-pentanenitrile, 124a, (0.059 g, 0.116 mmol)
in DMSO (0.500 mL) was added hydroxylamine (0.031 g, 0.470 mmol). The mixture was
heated in a microwave at 140 0C for 30 minutes. The residue was purified on a C18 column
(acetonitrile/0.1% formic acid) to afford the desired product: LCMS nt 10-90%, 0.1%
formic acid, 5 minutes, C18/ACN, RT = 1.58 minutes (M+H) 390.06.
Formation of 3-(2-((5-flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)amin0)—3,3-dimethylbutyl)—1,2,4-0xadiazol-5(2H)-0ne (65)
To a solution of racemic 3-[[5-fluoro(5-fluoro-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl]amino]-N'-hydroxy-4,4-dimethyl-pentanamidine, 125a, (0.034 g, 0.087 mmol)
WO 19828
and carbonyl diimidazole (0.014 g, 0.087 mmol) in THF (1 mL) was added N,N—
diisopropylethylamine (0.045 mL, 0.260 mmol). The reaction mixture was stirred at room
temperature for 48 hours. Aqueous ammonium chloride and dichloromethane were added and
the layers were separated with a phase tor. The residue was purified on a C18 column
(acetonitrile/0.1% formic acid) to afford the final product: 1H NMR (400 MHz, Acetone) 5
11.23 (s, 1H), 8.54 (dd, J: 9.8, 2.8 Hz, 1H), 8.36 (s, 1H), 8.20 (s, 1H), 8.13 (d, J: 3.7 Hz, 1H),
6.81 (s, 1H), 5.00 (d, J: 11.2 Hz, 1H), 3.15 (d, J: 14.8 Hz, 3H), 2.94 (dd, J: 14.4, 11.9 Hz,
2H), 1.16 (s, 8H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, RT = 1.58
minutes (M+H) 390.06.
Preparation ofCompound 47
Synthetic Scheme 19
OH OH
O O
\‘ H H
s\ N N
W N (\< -
:— =
F O OH F F
/ \
I HZNJ / \ / \
/ I I I
,N / /
N ‘l— 2a /N N n N
TS 127a Ts 128a 47
(a) Nazcog, CH3CN—THF, 125-150 0C; (b) 4M HC1, 1,4-dioxane—CH3CN, 60 °C
(R)((2-(5-flu0r0—1-tosyl-1H-pyrrolo [2,3-b]pyridinyl)pyrimidinyl)amin0)-4,4-
dimethylpentanoic acid (128a).
Sulfoxide, 1273, was prepared in same n as sulfoxide, 25a, (see Synthetic Scheme
4) using 2,4-dichloropyrimidine instead of 2-chlorofluoromethylsulfanyl-pyrimidine.
A mixture of 5-fluoro(4-(methylsulf1nyl)pyrimidinyl)tosyl-1H—pyrrolo[2,3-
b]pyridine, 12721, (0.052 g, 0.121 mmol) and (3R)amino-4,4-dimethyl-pentanoic acid, 23,
(0.035 g, 0.242 mmol) along with N32CO3 (0.051 g, 0.483 mmol) in a mixture of THF (0.780
mL) and acetonitrile (0.260 mL) was heated to 125 0C for 30 minutes under ave
irradiation. Then, the temperature was raised to 150 CC for a fiarther 2.5 hours. The mixture was
neutralized with aqueous 2N HCl and ted with several portions of EtOAc. The organic
ts were evaporated in vacuo. Purification by flash chromatography (SiOz, 0-100 %
hexanes-EtOAc (with 10% MeOH)) provided 19 mg of the desired material (31% yield), which
was used in the next step without r purification: LCMS Gradient 10-90%, 0.1%
trifluoroacetic acid, 5 minutes, C18/ACN, RT = 2.70 minutes (M+H) 512.00.
(R)((2-(5-flu0r0-lH-pyrrolo [2,3-b]pyridinyl)pyrimidinyl)amin0)-4,4-
dimethylpentanoic acid (47).
To a solution of (R)((2-(5-fluorotosyl-1H—pyrrolo[2,3-b]pyridinyl)pyrimidin
no)-4,4-dimethylpentanoic acid, 12821 (0.019 g, 0.037 mmol) in acetonitrile (0.6 mL) was
added HCl (0.15 mL of 4 M in dioxane, 0.60 mmol). The solution was heated to 60 0C for 18
hours. Then, additional HCl (0.36 mL of 4 M in dioxane) was added and heating was continued
for 4 hours. The mixture was cooled and trated in vacuo. Trituration with EtzO followed
by purification by preparatory HPLC provided 17.5 mg of the desired product as a TFA salt: .
The NMR ted a 4 to 1 ratio of atropisomers: 1H NMR (400 MHz, MeOD, major
atropsomer) 8 8.70 (dd, J = 8.9, 2.3 Hz, 1H), 8.50 (s, 1H), 8.35 (s, 1H), 7.99 (d, J = 7.3 Hz, 1H),
6.60 (d, J = 7.2 Hz, 1H), 5.05 (d, J = 10.7 Hz, 1H), 2.93 (dd, J = 15.9, 1.8 Hz, 1H), 2.53 (dd, J =
.9, 11.2 Hz, 1H), 1.08 (d, J = 0.8 Hz, 9H); LCMS Gradient 10-90%, 0.1% trifluoroacetic acid,
minutes, C18/ACN, RT = 2.17 minutes (M+H) 358.02.
Pre aration 0 Com ound 48
Synthetic Scheme 20
O O
FIf fl If —>
b F CN F
a F c d
\ OH \ NH2 \ /
I/ —> \I \
N CI N CI N CI N N
130a 131a 1323
N NW3/
Br B r
F F Bro ’N
/ f F
/ e F
\ I \ / g /
—> - \
\ I N \ ,N N —>
\ I I \N
N N N N , \
N N ,
H )rPh N N
133 Ph )1 Ph
a )Vph
134a Ph P“
135a Ph
ph 136a Ph
N N
0 F F
3 H2N , \ / \
OH N. I N\ I
ph 3 ,
Ph >\ N N/ M N
137a 2a phPh7<Ph
138" 48
(a) (CO)2Clz, 2C12, NH4OH; (b) Eth, TFAA, CH2C12 (C) N2H4'H20, nBuOH,
reflux; (d) tBuNOz, BT3CH, 60-90 0C; (e) PthCl, K2C03, DMF; (f) KOAc, 4,4,5,5-tetramethyl-
2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,3,2-dioxaborolane, Pd(dppf)2Clz, DMF, 100
0C; (g) 2-chloromethylsulfanyl-pyrimidine, Pd2(dba)3, XPhos, K3P04, 2-MeTHF, H20, 115
0C; (h) mCPBA, CHzClz, 0 0C; (i) N32C03, CH3CN—THF, 125-150 CC; (C) Et3SiH, TFA,
CHzClz.
Formation of 2-chlor0flu0r0pyridinecarboxamide (130a)
To the suspension of 2-chlorofluoropyridinecarboxylic acid (37.0 g, 210.8 mmol) in
dichloromethane (555 mL) was added oxalyl chloride (56.2 g, 442.7 mmol) under nitrogen.
DMF (1.54 g, 21.08 mmol) was added slowly to the on mixture. The mixture was stirred at
room ature for 2 h and dichloromethane was removed under reduced pressure. The
residue was dissolved in THF (300 mL) and cooled down to 0 0C by ice bath. Ammonium
hydroxide (28-30%, 113.0 mL, 1.8 mmol) was added in one portion. The mixture was stirred for
another 15 min. The mixture was diluted into ethyl acetate (300 mL) and water (300 mL) and
the phases were ted. The organic layer was washed with brine and dried over Na2S04,
filtered, and concentrated in vacuo to afford 29.8 g desired product as white solid: 1H NMR
(300 MHz, DMSO-d6) 5 8.53 (d, J: 3.0 Hz, 1H), 8.11 (s, 1H), 8.00 (dd, J: 8.0, 3.0 Hz, 1H),
7.89 (s, 1H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, RT = 1.11
minutes, (M+H) 175.02.
Formation of 2-chlor0fluoropyridine—3-carb0nitrile (131a)
To a suspension of 2-chlorofluoropyridinecarboxamide, 1303, (29.8 g, 170.4 mmol) in
dichloromethane (327 mL) was added triethylamine (52.3 mL, 374.9 mmol). This mixture was
cooled down to 0 0C. Trifluoroacetic anhydride (26.1 mL, 187.4 mmol) was added slowly over
period of 15 min. The mixture was stirred at 0 0C for 90 min. The mixture was diluted into
dichloromethane (300 mL) and the resulting organic phase was washed with aqueous saturated
NaHC03 solution (300 mL) and brine (300 mL). The organic layer was dried over Na2S04,
filtered, concentrated in vacuo. The product was purified by silica gel tography (40% to
60% ethyl e/hexanes gradient) giving 24.7 g of product as a white solid: 1H NMR (300
MHz, CDClg) 5 8.50 (d, J = 3.0 Hz, 1H), 7.77 (dd, J: 6.8, 3.0 Hz, 1H); LCMS Gradient 10-
90%, 0.1% formic acid, 5 minutes, C18/ACN, ion Time = 2.50 minutes, (M+H) 157.06.
ion of S-fluoro-lH-pyrazolo[3,4-b]pyridinamine (132a)
To the mixture of 2-chlorofluoropyridinecarbonitrile, 13121, (29.6 g, 157.1 mmol) in
n-butanol (492 mL) was added hydrazine hydrate (76.4 mL, 1.6 mol). This mixture was heated
to reflux for 4.5 h and cooled down. n-Butanol was d under reduced pressure and water
(300 mL) was added resulting in a yellow precipitate. The suspension was filtered and washed
with water twice, followed by a MTBE wash. The yellow solid was dried in a vacuum oven to
give 18 g of the desired product: 1H NMR (300 MHz, DMSO-d6) 8 12.08 (s, 1H), 8.38 (dd, J:
2.7, 1.9 Hz, 1H), 7.97 (dd, J: 8.8, 2.7 Hz, 1H), 5.56 (s, 2H). LCMS nt , 0.1%
formic acid, 5 minutes, C18/ACN, Retention Time = 1.25 s (M+H) 152.95.
Formation of 3-br0m0flu0r0-lH-pyrazolo[3,4-b]pyridine (133a)
To a mixture of 5-fluoro-1H—pyrazolo[3,4-b]pyridinamine, 13221, (0.88 g, 5.79 mmol)
in bromoform (8.8 mL) was added tert—butyl nitrite (1.38 mL, 11.57 mmol). This mixture was
heated to 61 0C for 1 h and then heated to 90 0C for an additional hour. The mixture was cooled
to room temperature and bromoform was removed under reduced pressure. The resulting crude
residue was purified by silica gel chromatography (5-50% ethyl acetate/hexanes) to afford 970
mg of the desired t as a white solid: 1H NMR (300 MHz, DMSO-d6) 5 14.22 (s, 1H),
8.67 (dd, J: 2.7, 1.9 Hz, 1H), 8.07 (dd, J: 8.2, 2.7 Hz, 1H); LCMS Gradient 10-90%, 0.1%
formic acid, 5 minutes, C18/ACN, Retention Time = 2.42 minutes (M+H) 216.11.
Formation of 0flu0r0trityl-lH-pyrazolo[3,4-b]pyridine (134a)
A mixture of 3-bromofluoro-1H—pyrazolo[3,4-b]pyridine, 13321, (0.97 g, 4.49 mmol)
and K2C03 (1.86 g, 13.47 mmol) in DMF (9.7 mL) was cooled to 0 0C.
Chlorodiphenylmethylbenzene (1.38 g, 4.94 mmol) was added. The mixture was d at room
temperature overnight. The mixture was diluted into ethyl acetate (40 mL) and water (30 mL)
and the layers were separated. The organic layer was washed with brine, dried over Na2S04,
filtered and concentrated in vacuo. The product was purified by silica gel chromatography (40%
ethyl acetate/hexanes) to afford 1.68 g of the desired product as a white solid: 1H NMR (300
MHz, DMSO-d6) 5 8.45 — 8.38 (m, 1H), 8.04 (dd, J: 8.0, 2.7 Hz, 1H), 7.35 — 7.16 (m, 15H);
LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 3.03
minutes (M+H) 459.46.
Formation of 5-flu0r0(4,4,5,5-tetramethyl-1,3,2-di0xab0rolanyl)trityl—1H-
pyrazolo[3,4-b]pyridine (135a)
A solution of 3-bromofiuorotrityl-pyrazolo[3,4-b]pyridine, 134a (3.43 g, 7.48
mmol), KOAc (2.20 g, 22.45 mmol) and 5-tetramethyl(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,3,2-dioxaborolane (2.85 g, 11.23 mmol) in DMF (50 ml) was ed
under a stream of nitrogen for 40 min. To the mixture was added f)2Clz (0.610 g, 0.748
mmol) The reaction mixture was heated at 100 0C for 90 minutes. The reaction mixture was
filtered through a pad of Celite. To the resulting filtrate was added ether and brine. The c
phase was dried over MgSO4, filtered and concentrated in vacuo to afford 4.0 g crude product
that was used in the next step without fiarther purification (note, the product decomposes if
purification is attempted via silica gel chromatography).
Formation of 5-flu0r0(4-(methylthi0)pyrimidinyl)trityl-1H-pyrazolo[3,4-b]pyridine
(136a)
A solution of 2-chloromethylsulfanyl-pyrimidine (0.25 g, 1.56 mmol), K3PO4 (0.99 g,
4.67 mmol) and 5-fiuoro-3 -(4,4,5 ,5 -tetramethyl-1,3 ,2-dioxaborolanyl)trityl- 1H-
pyrazolo[3,4-b]pyridine, 135a, (0.87 g, 1.71 mmol) in water (1 mL) and 2-methyltetrahydrofi1ran
(9 mL) was ed under a stream of nitrogen for 15 minutes. Then, Pd2(dba)3 (0.04 g, 0.05
mmol) was added and the mixture was degassed for an onal 2-3 minutes. The vessel was
sealed and heated to 95 0C overnight. After ting the layers, the organic phase was washed
with water. The resulting solid was filtered and washed with ether and MeTHF. Filtered
through PSA cartridge with MeOH/dichloromethane mixture to give the desired product as a
white solid: LCMS Gradient 60-98%, 0.1% formic acid, 7min, C4/ACN, Retention Time = 2.68
min (M+Na) 526.1.
Formation of S-fluor0(4-(methylsulfinyl)pyrimidinyl)—1-trityl-1H-pyrazolo [3,4-
b]pyridine (137a)
To a cold (0 0C) e of 5-fluoro(4-(methylthio)pyrimidinyl)trityl-1H-
pyrazolo[3,4-b]pyridine, 135a, (0.70 g, 1.38 mmol) in dichloromethane (10.4 mL) was added
mCPBA (0.43 g, 1.93 mmol). After 30 minutes, the mixture was diluted with dichloromethane
and washed with 2N NaOH and brine. The organic phase was brine dried over Na2S04, filtered
and stripped down twice with CH3CN to afford 660 mg of desired t that was used without
further purification: LCMS Gradient 60-98%, 0.1% formic acid, 7min, C4/ACN, Retention Time
= 2.68 minutes (M+H) 520.
(R)—3-((2-(5-flu0r0trityl-1H-pyrazolo [3,4-b] pyridinyl)pyrimidinyl)amino)—4,4-
ylpentanoic acid (138a).
A d suspension of 5-fiuoro(4-(methylsulfinyl)pyrimidinyl)trityl-1H-
indazole, 137a, (0.09 g, 0.18 mmol), (3R)—3-amino-4,4-dimethyl-pentanoic acid (0.05 g, 0.36
mmol) and Na2C03 (0.76 g, 0.72 mmol) in acetonitrile (0.62 mL) and F (0.31 mL) was
heated to 125 CC in microwave reactor for 1 hour. After cooling to room temperature, the
—104—
mixture was diluted with EtOAc, neutralized with HCl (0.72 mL of 2 M solution, 1.42 mmol)
and the product was extracted with several portions of EtOAc and CH2C12. Evaporation of the
combined organic phases provided 109 mg of the desired crude product which was used in the
next reaction without further purification: LCMS Gradient 10-90%, 0.1% trifluoroacetic acid, 5
minutes, C18/ACN, Retention Time = 3.08 minutes (M+H) .
(R)((2-(5-flu0r0-lH-pyrazolo [3,4-b] nyl)pyrimidinyl)amino)—4,4-
dimethylpentanoic acid (48)
To a solution of crude (R)((2-(5-fluorotrityl-1H—pyrazolo[3,4-b]pyridin
yl)pyrimidinyl)amino)-4,4-dimethylpentanoic acid, 1383, (0.11 g, 0.21 mmol) in CHzClz was
added triethylsilane (0.15 mL, 0.94 mmol) followed by trifluoroacetic acid (0.15 mL, 1.95
mmol). After ng the resulting solution at room temperature for 1 hour, the reaction mixture
was kept below 5 0C overnight (refrigerator). The mixture was then allowed to warm to room
temperature and kept at that temperature for an additional 5 hours. The on was d with
toluene and trated in vacuo. Trituration with EtZO followed by preparative HPLC
purification provided 15 mg of the desired product as the TFA salt. 1H NMR indicated a 3 to 1
e of atropisomers: 1H NMR (400 MHz, MeOD, major isomer) 8 8.63 - 8.45 (m, 2H), 7.96
(d, J: 7.3 Hz, 2H), 6.66 (d, J: 7.3 Hz, 2H), 4.95 (d, J: 10.6 Hz, 2H), 2.84 (dd, J: 15.4, 2.4
Hz, 2H), 2.44 (dd, J = 15.9, 10.7 Hz, 2H), 0.98 (s, 9H); LCMS Gradient 10-90%, 0.1%
trifluoroacetic acid, 5 minutes, C18/ACN, Retention Time = 2.12 minutes (M+H) 359.02.
Pre aration 0 Com ound 42
Synthetic Scheme 21
F O
0 o .. OEt
H2N OEt ’- jOEt NH
a NH b NC /
NC , \
\ N _=
N —>
F :
2 /
CI U 02% \
\ I U
8’0 N N
33a 143a Fm ‘Ts 144a
N, "l
F F
,. fioa ..
NH NH
NC NC
C \ [(1 d \ \Oj’OH
_= [G E
F = F =
—’ _’
/ /
I \ I \ U \ \
N N N N
H H
145a 42
(a) 2-chloro-5,6-difluoropyridinecarbonitrile, Eth, THF, EtOH; (b) 5-fluoro(ptolylsulfonyl
)(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)pyrrolo[2,3-b]pyridine, 721, X-
phos, Pd2(dba)3, K3P04, 2-methyl THF, H20, 130 0C; c) NaOMe, THF; d) LiOH, THF, H20.
Formation of (R)-ethyl 3-(6-chlor0cyan0flu0r0pyridinylamin0)—3-(1-
methylcyclopentyl)pr0pan0ate (143a)
To a solution of c ethyl 3-amino(1-methylcyclopentyl)propanoate, 3321, (0.40 g,
2.01 mmol) and 2,6-dichlorofluoro-pyridinecarbonitrile (0.46 g, 2.41 mmol) in THF (20
mL) was added triethylamine (0.67 mL, 4.82 mmol). The reaction e was stirred at 90 0C
in a pressure tube for 18 hours. The reaction mixture was filtered and the resulting filtrate was
trated in vacuo. The product was purified by silica gel chromatography
(25%EtOAc/Hexanes) to afford 380 mg of the desired product as a racemic mixture: 1H NMR
(400 MHz, CDC13) 8 7.31 (d, J: 9.7 Hz, 1H), 5.56 (d, J: 8.9 Hz, 1H), 4.68 (td, J: 9.6, 3.6 Hz,
1H), 4.07 (q, .1: 7.1 Hz, 2H), 2.68 (dd, J: 14.8, 3.7 Hz, 1H), 2.46 (dd, J: 14.8, 9.3 Hz, 1H),
1.77 — 1.62 (m, 4H), 1.61 — 1.49 (m, 2H), 1.47 — 1.37 (m, 1H), 1.35 — 1.26 (m, 1H), 1.19 (t, J:
7.1 Hz, 3H), 1.01 (s, 3H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN,
Retention Time = 3.81 minutes (M+H) 354.98. The racemic mixture was ted to SFC
chiral separation to give the indiVidual enantiomers, 143a and 143b. The (R)-enantiomer, 143a,
was taken forward into the next synthetic step.
Formation of (R)—ethyl 3-(5-cyan0flu0r0(5-flu0r0t0syl—lH-pyrrolo[2,3-b]pyridin
yl)pyridinylamin0)(1-methylcyclopentyl)pr0panoate (144a)
A solution of o(p-tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-dioxaborolan
rolo[2,3-b]pyridine, 7a, (0.155 g, 0.373 mmol), racemic ethyl 3-[(6-chlorocyano
fluoropyridyl)amino](1-methylcyclopentyl)propanoate, 143a, (0.120 g, 0.339 mmol) and
K3P04 (0.288 g, 1.357 mmol) in 2-methyl THF (10.0 mL) and H20 (0.24 mL) was ed
under a stream of nitrogen for 30 minutes. To the mixture was added X-phos (0.020 g, 0.041
mmol) and Pd2(dba)3 (0.008 g, 0.008 mmol). The reaction mixture was stirred at 130 0C in a
pressure tube for 45 minutes. The organic phase was filtered through a pad of celite and
concentrated in vacuo. The resulting crude al was d by silica gel chromatography
(30% EtOAc/Hexanes) to afford 150 mg of the desired product: 1H NMR (400 MHz, CDClg) 5
8.67 (s, 1H), 8.44 (dt, .1: 15.3, 7.7 Hz, 1H), 8.37 (d, J: 1.5 Hz, 1H), 8.13 (t, J: 7.6 Hz, 2H),
7.41 (d, J: 10.3 Hz, 1H), 7.32 (d, J: 7.5 Hz, 2H), 5.38 (t, J: 9.7 Hz, 1H), 4.89 (td, J: 10.1,
3.3 Hz, 1H), 4.02 — 3.91 (m, 2H), 2.74 (dd, J: 15.1, 3.5 Hz, 1H), 2.52 (dd, J: 15.1, 10.2 Hz,
1H), 2.40 (s, 3H), 1.61 (ddt, J: 32.0, 20.7, 7.7 Hz, 7H), 1.49 — 1.30 (m, 3H), 1.27 (t, J: 7.1 Hz,
3H), 1.08 — 0.97 (m, 3H). LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN,
Retention Time = 4.22 min (M+H) 608.29.
Formation of thyl 3-(5-cyan0flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridin
yl)pyridinylamin0)(1-methylcyclopentyl)pr0panoate (145a)
To a solution of c ethyl 3-(5-cyanofluoro(5-fluorotosyl-1H—pyrrolo[2,3-
b]pyridinyl)pyridinylamino)(1-methylcyclopentyl)propanoate, 144a, (0.150 g, 0.247
mmol) in THF (20 mL) was added sodium methoxide (0.053 mL of 25% wt solution in MeOH,
0.247 mmol). The reaction e was stirred at room temperature for 5 minutes. The reaction
mixture was diluted with aqueous saturated NaHC03 solution and EtOAc. The organic phase
was dried over MgSO4, filtered and concentrated in vacuo. The product was purified by silica
gel chromatography (40% EtOAc/Hexanes) to afford 90 mg of the d product as a mixture
of ethyl and methyl esters. The mixture was taken onto the next step without further
purification: 1H NMR (400 MHz, CDClg) 5 10.18 (s, 1H), 8.65 (dd, J: 9.6, 2.5 Hz, 1H), 8.48
(d, J: 2.8 Hz, 1H), 8.32 (s, 1H), 7.37 (t, J: 14.1 Hz, 1H), 5.38 (d, J: 7.9 Hz, 1H), 5.02 (td, J:
9.8, 3.5 Hz, 1H), 3.54 (s, 3H), 2.80 (dt, .1: 15.8, 7.9 Hz, 1H), 2.57 (dd, J: 14.9, 9.8 Hz, 1H),
1.80 — 1.57 (m, 7H), 1.43 (ddd, J: 24.5, 14.1, 6.0 Hz, 3H), 1.08 (s, 3H); LCMS Gradient 10-
90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 3.60 minutes (M+H) 440.26.
Formation of (R)—3-(5-cyan0flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridinyl)pyridin
ylamino)—3-(1-methylcyclopentyl)pr0pan0ic acid (42)
To a solution of racemic methyl yanofluoro(5-fluoro-lH—pyrrolo[2,3-b]pyridin-
3-yl)pyridinylamino)(1-methylcyclopentyl)propanoate, 14521, (0.090 g, 0.204 mmol) in
THF (30 mL) was added a solution of lithium hydroxide (0.035 g, 0.819 mmol) in H20 (10 mL).
The reaction mixture was stirred at 70 OC overnight. The organic phase was removed under
reduced pressure and the resulting residue was d by preparatory HPLC. The appropriate
HPLC ons were extracted with EtOAc, and the solvent was removed under reduced
pressure: 1H NMR (400 MHz, MeOD) 8 8.64 (dd, J: 8.4, 2.4 Hz, 1H), 8.57 (s, 1H), 8.24 (d, J:
4.4 Hz, 1H), 5.19 (d, J: 8.7 Hz, 1H), 2.78 (qd, J: 15.9, 6.6 Hz, 2H), 1.85 — 1.57 (m, 6H), 1.48
(dd, J: 11.8, 6.0 Hz, 1H), 1.36 (dt, J: 12.0, 6.0 Hz, 1H), 1.11 (s, 3H); LCMS Gradient 10-90%,
0.1% formic acid, 5 minutes, C18/ACN, ion Time = 3.21 minutes (M+H) 426.25.
Pre aration 0 Com ounds 5 6 and 12
Synthetic Scheme 22
F o
O 0 OEt
’— CE
HZN OEt NH
a NH b
/ N\Féi/ N
\ N
CI I
\ ,N
B’0 N N
33a 147a F
\ 148a
| \ ‘Tr
/ 135a
N N
Fé’ O o
OEt /¢§7 OH
N / N N / N
c \ d \
N N
F —> F
/ /
\ \
\ I ,N \ I IN
N N N N
H H
149a 12
(a) Eth, THF, EtOH; (b) 5-fluoro(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)trityl-1H-
pyrazolo[3,4-b]pyridine, 135a, X-phos, Pd2(dba)3, K3P04, 2-methyl THF, H20, 135 0C; (c)
Et3SiH, TFA, CH2C12; (d) LiOH, THF, H20.
Formation of (+/-)-ethyl 3-(2-chlor0flu0r0pyrimidinylamin0)(1-
methylcyclopentyl)pr0pan0ate (147a)
To a solution of 2,4-dichlorofluoro-pyrimidine (0.184 g, 1.100 mmol) and c
ethyl 3-amino(1-methylcyclopentyl)propanoate, 3321, (0.199 g, 1.000 mmol) in THF (10 mL)
and ethanol (1 mL) was added triethylamine (0.307 mL, 2.200 mmol). The reaction e was
stirred at 70 0C for 5 hours. The mixture was filtered and the filtrate was concentrated in vacuo.
The resulting residue was purified via silica gel chromatography (25%EtOAc/Hexanes) to afford
180 mg ofthe desired product: 1H NMR (400 MHz, CDClg) 8 7.88 (d, J: 2.7 Hz, 1H), 5.54 (d,
J: 9.2 Hz, 1H), 4.74 — 4.54 (m, 1H), 4.08 (q, J: 7.2 Hz, 2H), 2.68 (dd, J: 14.8, 3.7 Hz, 1H),
2.46 (dd, J: 14.8, 9.3 Hz, 1H), 1.69 (dd, J: 12.8, 8.8 Hz, 4H), 1.63 — 1.50 (m, 2H), 1.46 — 1.38
(m, 1H), 1.37 — 1.23 (m, 1H), 1.23 — 1.14 (m, 3H), 1.00 (s, 3H). LCMS Gradient , 0.1%
formic acid, 5 minutes, C18/ACN, Retention Time = 3.54 minutes (M+H) 330.17.
Formation of (+/-)-ethyl 3-(5-flu0r0(5-flu0r0trityl-1H—pyrazolo[3,4-b]pyridin
yl)pyrimidinylamin0)(1-methylcyclopentyl)pr0pan0ate (1483)
A solution of K3P04 (0.464 g, 2.183 mmol), racemic ethyl 3-[(2-chlorofluoropyrimidinyl
)amino](1-methylcyclopentyl)propanoate, 147a, (0.180 g, 0.546 mmol) and 5-
fluoro-3 -(4,4,5 ,5 -tetramethyl- 1 ,3 ,2-dioxaborolanyl)trityl-pyrazolo [3 ,4-b]pyridine, 135a,
(303.4 mg, 0.6004 mmol) in 2-Methyl THF (3.240 mL) and H20 (0.360 mL) was degassed under
a stream of nitrogen for 30 s. To this mixture was added X-phos (0.031 g, 0.066 mmol)
and Pd2(dba)3 (0.013 g, 0.014 mmol). The reaction mixture was stirred at 135 0C in a pressure
tube for 1 hour. The organic phase was filtered through a pad of celite and concentrated in
vacuo. The resulting residue was purified by silica gel chromatography (30% EtOAc/Hexanes) to
afford 240 mg of the desired product: 1H NMR (400 MHZ, CDClg) 5 8.55 (dd, J: 8.5, 2.7 Hz,
1H), 8.15 (d, J: 2.4 Hz, 2H), 7.27 (dd, J: 11.0, 5.0 Hz, 15H), 5.38 (d, J: 9.7 Hz, 1H), 4.89
(dd, J: 9.7, 6.0 Hz, 1H), 3.99 (q, .1: 7.1 Hz, 2H), 2.73 (dd, J: 14.7, 3.8 Hz, 1H), 2.52 (dd, J:
14.8, 9.4 Hz, 1H), 1.68 (dd, J: 12.0, 6.6 Hz, 2H), 1.64 — 1.52 (m, 4H), 1.47 — 1.36 (m, 1H), 1.30
(dt, J: 14.3, 7.2 Hz, 2H), 1.11 — 0.99 (m, 4H). LCMS Gradient 60-98%, formic acid, 7 minutes,
C18/can, Retention Time = 3.24 minutes (M+H) 672.85.
Formation of (+/-)-ethyl 3-(5-flu0r0(5-flu0r0-lH-pyrazolo[3,4-b]pyridinyl)pyrimidin-
4-ylamin0)(1-methylcyclopentyl)pr0pan0ate (149a)
To a solution of racemic ethyl 3-[[5-fiuoro(5-fiuorotrityl-pyrazolo[3,4-b]pyridin
yl)pyrimidinyl]amino](1-methylcyclopentyl)propanoate, 148a, (0.240 g, 0.357 mmol) in
dichloromethane (20 mL) was added triethylsilane (0.285 mL, 1.784 mmol) followed by
trifluoroacetic acid (0.275 mL, 3.567 mmol). The on mixture was stirred at room
temperature ght. The on e was concentrated in vacuo and the resulting crude
e was purified by silica gel chromatography (5% MeOH/CHzClz) to afford the desired
product: 1H NMR (400 MHz, CDClg) 5 11.80 (s, 2H), 8.59 (d, J: 12.3 Hz, 2H), 8.48 (d, J: 7.9
Hz, 1H), 6.60 (d, J: 8.3 Hz, 1H), 5.07 (s, 1H), 4.09 (q, J: 7.0 Hz, 2H), 2.97 — 2.59 (m, 2H),
1.70 (dd, J: 27.7, 13.9 Hz, 6H), 1.57 — 1.33 (m, 2H), 1.16 (dd, J: 18.1, 11.1 Hz, 6H); LCMS
Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, ion Time = 2.97 minutes
(M+H) 431.24.
Formation of (+/-)(5-flu0r0(5-flu0r0—lH-pyrazolo[3,4-b]pyridinyl)pyrimidin
ylamin0)(1-methylcyclopentyl)pr0pan0ic acid (12)
To a solution of racemic ethyl 3-[[5-fiuoro(5-fiuoro-1H—pyrazolo[3,4-b]pyridin
yl)pyrimidinyl]amino](1-methylcyclopentyl)propanoate, 149a, (0.110 g, 0.256 mmol) in
THF (30 mL) was added a solution of lithium hydroxide e (0.043g, 1.022 mmol) in H20
(20 mL). The reaction mixture was stirred at 70 0C overnight. The organic solvent was removed
under reduced pressure and the remaining aqueous phase was used directly in the ation via
preparatory HPLC. The resulting HPLC fractions were extracted with EtOAc. The organic
phase was dried over MgSO4, filtered and the solvent was removed under reduced pressure to
afford the d product: 1H NMR (400 MHz, MeOD) 8 8.64 (dd, J = 8.4, 2.4 Hz, 1H), 8.57 (s,
1H), 8.24 (d, J: 4.4 Hz, 1H), 5.19 (d, J: 8.7 Hz, 1H), 2.78 (qd, J: 15.9, 6.6 Hz, 2H), 1.85 —
1.57 (m, 6H), 1.48 (dd, J: 11.8, 6.0 Hz, 1H), 1.36 (dt, J: 12.0, 6.0 Hz, 1H), 1.11 (s, 3H).
LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.37 min,
(M+H) 403.22.
The ing compounds can be prepared in a similar fashion as the procedure described
above for Compound 12:
PS’ O
/I\ 7
\ ,N
N N
(R)((5-flu0r0(5-flu0r0-lH-pyrazolo ]pyridinyl)pyrimidinyl)amin0)-4,4-
dimethylpentanoic acid (5)
Compound 5 was synthesized in a manner similar to compound 12, starting with
nd 6a: 1H NMR (400 MHz, d6-DMSO) 8 12.65 (s, 1H), 9.43 (s, 1H), 9.15 (s, 1H), 8.44
(d, J = 4.7 Hz, 1H), 8.41 — 8.29 (m, 2H), 3.93 (s, 1H), 3.54 (s, 1H), 1.19 (d, J: 20.0 Hz, 9H);
LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.70 min,
(M+H) 393.32.
(R)((3,5-diflu0r0(5-flu0r0-lH-pyrazolo [3,4-b]pyridinyl)pyridinyl)amin0)-4,4-
dimethylpentanoic acid (6)
nd 6 was synthesized in a manner similar to compound 12, utilizing (R)-ethyl 3-
((6-bromo-3,5-difluoropyridinyl)amino)-4,4-dimethylpentanoate as the intermediate for the
Suzuki ng. (R)-ethyl 3-((6-bromo-3,5-difluoropyridinyl)amino)-4,4-dimethyl-
pentanoate was prepared in the same fashion as ediate, 143a, utilizing 2-bromo-3,5,6-
trifluoropyridine as the starting material instead of 2-chloro-5,6-difluoropyridinecarbonitrile:
1H NMR (400 MHz, CDClg) 5 8.31 (d, J: 6.4 Hz, 1H), 8.06 (s, 1H), 7.06 (t, J: 9.7 Hz, 1H),
4.58 (s, 2H), 2.80 (d, J: 13.2 Hz, 1H), 2.29 (dd, J: 13.3, 8.7 Hz, 1H), 0.98 (s, 9H).; LCMS
Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.92 min, (M+H)
394.19.
96 / '
I2 97
(R)((2-(5-chlor0-lH-pyrazolo[3,4-b]pyridinyl)flu0r0pyrimidinyl)amino)—4,4-
dimethylpentanoic acid (97) and methylester (96)
Compounds 96 and 97 were synthesized in a manner similar to compound 12, starting
with compound 6a: 1H NMR (300 MHz, MeOD) for Compound 97: 8 8.95 (d, J = 2.3 Hz, 1H),
WO 19828 2012/049097
8.66 (d, J: 2.3 Hz, 1H), 8.35 (d, J: 5.2 Hz, 1H), 5.12 (dd, J: 10.7, 2.9 Hz, 1H), 2.93 (dd, J:
16.5, 2.9 Hz, 1H), 2.73 (dd, J: 16.4, 10.7 Hz, 1H), 1.10 (s, 9H); LCMS Gradient 10-90%, 0.1%
formic acid, 5 minutes, C18/ACN, Retention Time = 2.79 min, (M+H) 407.37.
Pre aration 0 Com ounds 54 56 and 53
tic Scheme 23
F F F
fl a O
z b c
N / CI —> N / NH —> NF87/
\ \ N\H4>*OE1 —.
N N NH >\’N N 34%
CI CI 78 CI 7’\ ‘B—O
151a 152a \/ I
153a
N N.
F F
N\ N NH}OE1‘N d N‘ N NH}OE1‘N 9
/ 7K F30
I \ I \ 7K
\ \
N N N N
154a H 155a
.2 o
N /
\ N\H4>*OH
F C3
\ N7<N
N N
(a) tert—butylhydrazine-HCl, Eth, THF, EtOH; (b) 2-bromoethyl acetate, K2C03, CH3CN; (c) 3-
(4,4,5 ,5 -tetramethyl-1 ,3 ,2-dioxaborolanyl)tosyl-5 -(trifiuoromethyl)— 1H-pyrrolo [2,3 -
b]pyridine, 153a, X-phos, Pd2(dba)3, K3P04, THF, H20; (d) TBAF/THF; (e) LiOH, H20, THF.
Formation of 4-(2-tert-butylhydrazinyl)chlor0-S-fluoropyrimidine (1513)
To a solution of 2,4-dichlorofiuoro-pyrimidine (1.84 g, 11.00 mmol) and tert-
butylhydrazine hydrochloride (1.25 g, 10.00 mmol) in THF (50 mL) and EtOH (5 mL) was
added triethylamine (4.18 mL, 30.00 mmol). The reaction mixture was stirred at room
temperature overnight. The reaction e was filtered to remove triethylamine HCl salt and
the filtrate concentrated in vacuo. The resulting residue was purified by silica gel
tography (EtOAc/Hexanes) to afford 1.7g of the desired product: 1H NMR (400 MHZ,
CDClg) 8 7.82 (d, J: 2.8 Hz, 1H), 6.47 (s, 1H), 4.60 (d, J: 5.8 Hz, 1H), 1.09 (s, 9H). LCMS
Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.19 minutes
(M+H) 218.81.
Formation of ethyl 2-(1-tert-butyl(2-chlor0flu0r0pyrimidinyl)hydrazinyl)ethanoate
(1523)
To a suspension of 4-(2-tert—butylhydrazinyl)chlorofiuoropyrimidine, 15121, (1.50 g,
6.86 mmol) in itrile (68 mL) was added 2-bromoethyl acetate (0.84 mL, 7.55 mmol) and
K2C03 (2.28 g, 16.46 mmol). The reaction mixture was stirred at room temperature overnight.
The mixture was diluted into EtOAc and brine. The organic phase was dried over MgSO4,
filtered and concentrated in vacuo. The residue was purified by silica gel chromatography
(30%EtOAc/Hexanes) to afford 1 g of the d product: 1H NMR (400 MHz, CDClg) 8 7.96
(d, J: 3.1 Hz, 1H), 4.16 (dt, J: 7.1, 5.9 Hz, 2H), 3.74 (s, 2H), 1.30 — 1.23 (m, 3H), 1.20 (s, 9H).
LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, N, Retention Time = 2.69
minutes (M+H) 305.09.
Formation of ethyl 2-(1-tert-butyl—2—(5-flu0r0-2—(1-t0syl(triflu0r0methyl)—lH-pyrrolo[2,3-
b]pyridinyl)pyrimidinyl)hydrazinyl)ethan0ate (154a)
Boronate ester, 153a, was ed in same fashion as boronate ester, 7a, (see Synthetic
Scheme 4) using 3-bromo(trifiuoromethyl)-1H—pyrrolo[2,3-b]pyridine instead of 3-bromo
fiuoro- 1H—pyrrolo [2,3 -b]pyridine.
A solution of 1-(p-tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)
(trifiuoromethyl)pyrrolo[2,3-b]pyridine, 153a, (0.551 g, 1.181 mmol), ethyl 2-(1-tert—butyl(2-
fiuoropyrimidinyl)hydrazinyl)ethanoate, 152a, (0.300 g, 0.984 mmol) and K3P04
(0.627 g, 2.953 mmol) in 2-MethleHF (26 mL) and H20 (5 mL) was degassed under a stream
of nitrogen for 45 minutes. To the reaction mixture was added X-phos (0.056 g, 0.118 mmol)
and a)3 (0.022 g, 0.025 mmol). The reaction mixture was heated at 120 0C for 75 minutes.
The aqueous phase was removed and the organic phase was filtered through a pad of celite,
concentrated in vacuo and purified by silica gel chromatography (30% EtOAc/Hexanes) to afford
540 mg of the desired product: 1H NMR (400 MHz, CDClg) 8 9.49 (s, 1H), 8.71 (t, J: 7.0 Hz,
1H), 8.63 (d, J: 11.1 Hz, 1H), 8.16 — 8.11 (m, 3H), 7.31 (d, J: 8.2 Hz, 2H), 7.11 (d, J: 21.4
Hz, 1H), 4.10 (dd, J: 13.4, 6.3 Hz, 2H), 3.79 (s, 2H), 2.39 (s, 3H), 1.24 (s, 9H), 1.17 (t, J: 7.1
Hz, 3H); LCMS Gradient , 0.1% formic acid, 5 minutes, C18/ACN, Retention Time =
4.18 minutes (M+H) 609.37.
Formation of ethyl tert-butyl)—2-(5-flu0r0(5-(triflu0r0methyl)-lH-pyrrolo[2,3-
b]pyridinyl)pyrimidinyl)hydrazinyl)acetate (155a)
To a solution of ethyl 2-(1-tert—butyl(5-fiuoro(1-tosyl(trifiuoromethyl)-1H-
pyrrolo[2,3-b]pyridinyl)pyrimidinyl)hydrazinyl)ethanoate, 154a, (0.54 g, 0.89 mmol) in
THF (20 mL) was added tetrabutylammonium fluoride (1.78 mL of 1 M, 1.78 mmol). The
reaction mixture was stirred at room temperature for 30 s. The reaction mixture was
diluted into EtOAc and brine. The organic phase was dried over MgSO4, filtered and
concentrated in vacuo. The resulting residue was purified Via silica gel chromatography
(70%EtOAc/Hexanes) to afford 300 mg of the desired product. 1H NMR (400 MHz, CDClg) 5
.59 (s, 1H), 9.55 (s, 1H), 8.66 (s, 1H), 8.29 (d, J: 2.2 Hz, 1H), 8.13 (dd, J: 3.8, 1.5 Hz, 1H),
7.14 (s, 1H), 4.20 — 4.04 (m, 2H), 3.85 (s, 2H), 1.28 (d, J = 9.1 Hz, 9H), 1.19 (dt, J: 7.1, 3.6 Hz,
3H). LCMS Gradient , 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.93
min, (M+H) 455.43.
Formation of 2-(1-(tert-butyl)(5-flu0r0(5-(triflu0r0methyl)—lH-pyrrolo[2,3-b]pyridin-
3-yl)pyrimidinyl)hydrazinyl)acetic acid (54)
To a solution of ethyl 2-[tert—butyl-[[5-fiuoro[5-(trifiuoromethyl)-1H—pyrrolo[2,3-
b]pyridinyl]pyrimidinyl]amino]amino]acetate, 155a, (0.200 g, 0.440 mmol) in THF (40
mL) was added a solution of m hydroxide hydrate (0.074 g, 1.760 mmol) in H20 (4 mL).
The on mixture was stirred at room temperature overnight. The reaction mixture
concentrated in vacuo to remove the THF. The remaining aqueous phase was diluted to 8 mL
and the solution was used directly in a preparatory HPLC. The product precipicated when the
fraction was concentrated on rotavaporator. The solid was filtered and dried in desiccator with
P205 to afford 120mg of the desired t: 1H NMR (400 MHZ, d6-DMSO) 5 12.65 (s, 1H),
12.41 (s, 1H), 9.28 (s, 1H), 8.86 (s, 1H), 8.65 (s, 1H), 8.30 (d, J: 3.5 Hz, 2H), 3.97 — 3.70 (m,
1H), 3.51 (s, 1H), 1.18 (s, 9H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes,
C18/ACN, Retention Time = 2.92 min, (M+H) 427.40
The ing compounds can be prepared in a similar fashion as the procedure described
above for Compound 54:
NWN‘HfOH,. o
N N
N N
Formation of 2-(1-(tert-butyl)(2-(5-chlor0-lH-pyrrolo[2,3-b]pyridinyl)—5-
fluor0pyrimidinyl)hydrazinyl)acetic acid-TFA (trifluoro acetic acid) salt (56)
1H NMR (400 MHz, d6-DMSO) 8 12.65 (s, 1H), 9.43 (s, 1H), 9.15 (s, 1H), 8.44 (d, J =
4.7 Hz, 1H), 8.41 — 8.29 (m, 2H), 3.93 (s, 1H), 3.54 (s, 1H), 1.19 (d, J: 20.0 Hz, 9H); LCMS
nt 10-90%, 0.1% formic acid, 5 s, C18/ACN, ion Time = 2.70 min, (M+H)
393.32.
Formation of 2-(1-(tert-butyl)(5-flu0r0(5—flu0r0—1H-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)hydrazinyl)acetic acid— TFA salt (53)
1H NMR (400 MHz, d6-DMSO) 8 12.57 (s, 1H), 9.40 (s, 1H), 8.88 (s, 1H), 8.40 (d, J =
18.7 Hz, 2H), 8.34 (s, 1H), 3.93 (s, 1H), 3.52 (s, 1H), 1.20 (s, 9H); LCMS Gradient 10-90%,
0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.50 min, (M+H) 377.42.
Pre aration 0 Com ounds 7 8 and 18
Synthetic Scheme 24
159a 1 8
(a) 2,6-dich10r0fiu0r0-pyridinecarb0nitri1e, Eth, acetonitrile; (b) 5-fiu0r0(pt01y1su1f0ny1
)-3 -(4,4,5 ,5 -tetramethy1— 1 ,3 ,2-dioxab0r01any1)pyrr010 [2,3 -b]pyridine, 7a,
Pd2(dba)3, X-Phos, K3P04, 2-MeTHF, H20, 125 0C; (c) LiOH, THF, H20
Formation of ethyl 3-[(6-chlorocyanofluoropyridyl)amino]-4,4—dimethyl-hexanoate
(158a)
A on of ethyl 3-amin0-4,4-dimethy1—hexanoate, 27a, (0.24 g, 1.28 mmol), 2,6-
dich10rofiuoro-pyridinecarbonitri1e (0.29 g, 1.53 mmol) and Eth (0.43 mL, 3.07 mmol) in
acetonitrile (4.8 mL) was stirred at 70 0C overnight. The reaction e was concentrated in
vacuo and purified by silica gel chromatography (10-40% EtOAc/Hexanes gradient) to provide
205 mg of ethyl 3-[(6-ch10rocyanofiu0r0pyridy1)amin0]-4,4-dimethy1—hexan0ate; LCMS
Gradient 10-90%, 0.1% formic acid, 5 minutes, N, Retention Time = 3.75 minutes
(M+H) 342.04.
Formation of ethyl 3-[[5-cyanofluoro[S-fluoro(p-tolylsulfonyl)pyrrolo[2,3-
b]pyridinyl]pyridyl]amino]-4,4-dimethyl-hexanoate (159a)
A solution of ethyl 3-[(6-ch10rocyanofiu0r0pyridy1)amin0]-4,4-dimethy1—
hexanoate, 158a, (0.21 g, 0.600 mmol)
, o(p-t01y1su1f0ny1)(4,4,5,5-tetramethy1—
1,3,2-di0xaborolany1)pyrr010[2,3-b]pyridine, 7a, (0.30 g, 0.72 mmol) and K3PO4 (0.51 g, 2.40
mmol) in 2-methy1 THF (20.5 mL) a n d H20 (2.7 mL) was degassed for 45 minutes and d
with X-phos (0.03 g, 0.07 mmol) and Pd2(dba)3 (0.01 g, 0.02 mmol). The reaction vessel was
sealed and heated to 125 0C for 90 minutes. After cooling to room temperature, the aqueous
phase was removed and the organic phase was filtered and concentrated in vacuo. The crude
residue was purified by silica gel chromatography (0-40% EtOAc/Hexanes nt) to provide
270 mg of the desired product: 1H NMR (400 MHz, CDC13) 8 8.69 (s, 1H), 8.51 (dd, J: 9.1, 2.7
Hz, 1H), 8.37 (d, J: 1.8 Hz, 1H), 8.15 (d, J: 8.4 Hz, 2H), 7.41 (d, J: 10.3 Hz, 1H), 7.33 (d, J:
8.1 Hz, 2H), 5.28 - 5.22 (m, 1H), 4.92 (td, J: 10.4, 3.2 Hz, 1H), 4.03 - 3.91 (m, 2H), 2.75 (dd, J
= 14.9, 3.5 Hz, 1H), 2.45 (dd, J: 12.6, 8.2 Hz, 1H), 2.40 (s, .1: 4.7 Hz, 3H), 1.36 (q, .1: 7.4 Hz,
2H), 1.01 (t, J: 7.1 Hz, 3H), 0.92 (d, J: 8.8 Hz, 6H), 0.88 (t, J: 7.5 Hz, 3H). LCMS Gradient
-90%, 0.1% formic acid, 5 minutes, N, Retention Time = 2.86 minutes (M+H) 596.02.
Formation of 3-[[5-cyanofluoro(5-fluoro-lH-pyrrolo[2,3-b]pyridinyl)—2-
pyridyl]amino]-4,4-dimethyl-hexanoic acid (18)
Ethyl 3 -[[5 -cyano-3 -fluoro[5 -fluoro(p-tolylsulfonyl)pyrrolo [2,3 -b]pyridin-3 -yl]
pyridyl]amino]-4,4-dimethyl-hexanoate, 159a, (0.27 g, 0.45 mmol) was dissolved in THF (7 mL)
and treated with LiOH (4.50 mL of 1 M, 4.50 mmol). The reaction e was heated to 70 °C
for 10 hours. After cooling to room temperature, water (20 mL) and ethyl acetate (20 mL) were
added and the layers were separated. The aqueous layer was brought to a neutral pH by addition
of 1N HCl, and the resulting precipitate was collected by ion, washed with water and
concentrated in vacuo to provide 77 mg of the desired product: 1H NMR (400 MHz, DMSO-d6)
8 12.37 (s, 1H), 12.12 (s, 1H), 8.75 (d, J: 9.9 Hz, 1H), 8.32 (s, 2H), 7.83 (d, J: 11.4 Hz, 1H),
7.48 (d, J: 9.5 Hz, 1H), 5.00 (t, J: 9.1 Hz, 1H), 2.71 - 2.54 (m, 2H), 1.30 (d, J: 7.4 Hz, 2H),
0.80 (t, J = 18.7 Hz, 9H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN,
Retention Time = 3.14 minutes (M+H) 414.31.
The following compounds can be prepared in a similar fashion as the procedure described
above for Compound 18:
NC\/NH OH
F N5
[\ 7‘
Formation of (R)(5-cyan0flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridinyl)pyridin
ylamino)—4,4-dimethylpentanoic acid (7)
1H NMR (400 MHz, MeOD) 8 8.81 (dd, J: 9.8, 2.7 Hz, 1H), 8.36 (s, 1H), 8.20 (s, 1H),
7.53 (d, J: 11.0 Hz, 1H), 5.04 (d, J: 8.7 Hz, 1H), 2.80 (dd, J: 15.2, 2.5 Hz, 1H), 2.59 (dd, J:
.0, 11.0 Hz, 1H), 0.99 (s, 9H); LCMS nt 10-90%, 0.1% formic acid, 5 minutes,
N, Retention Time = 3.0 minutes (M+H) .
NC\/NH OH
F/ s
\ [\U
Formation of (R)—3-(5-cyan0flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridinyl)pyridin
ylamino)—3-(1-methylcyclopentyl)pr0pan0ic acid (8)
1H NMR (300 MHz, CDClg) 8 10.70 (s, 1H), 8.42 (dd, J: 9.6, 2.6 Hz, 1H), 8.05 (s, 1H),
7.73 (s, 1H), 7.40 (t, J: 8.4 Hz, 1H), 5.32 (d, J: 6.6 Hz, 1H), 4.83 (t, J: 9.4 Hz, 1H), 2.89 (d, J
= 5.3 Hz, 1H), 2.34 (dd, J: 12.8, 9.6 Hz, 1H), 1.92
— 1.37 (m, 8H), 1.32 — 1.24 (m, 1H), 1.20 —
1.06 (m, 3H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time
= 3.27 minutes (M+H) 426.31.
Pre aration 0 Com ound 55
Synthetic Scheme 25
—114—
WO 19828
(a) (i) NH3, HBTU, THF, (ii) 2N LiOH, MeOH; (b) TFAA, pyridine; (c) Bu3SnN3, dioxane,
130 0C;
Formation of (+/-)(5-fluoro(5-fluoro-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
ylamino)-4,4-dimethylpentanamide (164a)
To a on of racemic 3-(5-fluor0(5-flu0r0t0syl-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinylamin0)—4,4-dimethylpentanoic acid, 163a, (0.50 g, 0.94 mmol) in 15 mL of
THF was added HBTU (0.36 g, 0.95 mmol). The reaction was stirred for 15 minutes and then
ammonia gas was bubbled through for 5 minutes. The reaction was allowed to stir for 12 hours
and then concentrated to dryness. The residue was redissolved in 20 mL of MeOH and treated
with 3 mL of 2N LiOH. The on was warmed to 60 0C for 3 hours and then concentrated to
dryness. The residue was purified by silica gel chromatography (EtOAc) to afford 250 mg of
desired product: LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, N, Retention
Time = 1.78 minutes (M+H) 375.45.
Formation of (+/-)(5-fluoro(5-fluoro-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
ylamino)—4,4-dimethylpentanenitrile (165a)
A solution of racemic 3-(5-fluoro(5-fluoro-1H—pyrrolo[2,3-b]pyridinyl)pyrimidin-
ino)-4,4-dimethylpentanamide, 164a, (0.250 g, 0.668 mmol) in pyridine was cooled to 0
CC and treated with trifluoroacetic acid anhydride (0.278 mL, 2.003 mmol). After 2 hours at 0
0C, the reaction was concentrated to s and the residue was purified by silica gel
chromatography ) to afford 150 mg of desired product: LCMS Gradient 10-90%, 0.1%
formic acid, 5 minutes, C18/ACN, Retention Time = 2.41 minutes (M+H) 357.47.
Formation of (+/-)-N-(3,3-dimethyl(2H-tetrazolyl)butanyl)fluoro(5-fluoro-1H-
pyrrolo[2,3-b]pyridinyl)pyrimidinamine (55)
To a solution of racemic 3-(5-flu0r0(5-fluoro-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinylamin0)—4,4-dimethylpentanenitrile, 165a, (0.150 g, 0.420 mmol) in 10 mL of
dioxane was added azido-tributylstannane (0.221 g, 0.668 mmol). The reaction vessel was
sealed and warmed to 130 0C for 12 hours. Upon g, the reaction was concentrated to
dryness and the resulting residue was purified by silica gel chromatography to afford 48 mg of
desired product: 1H NMR (300.0 MHz, d6-DMSO) 8 12.23 (s, H), 8.49 (d, J: 9.6 Hz, H), 8.26 -
8.05 (m, H), 4.03 (d, J: 7.1 Hz, H), 3.48 - 3.35 (m, H), 3.17 (s, H), 2.50 (s, H), 1.99 (s, H), 1.13
(dt, J = 25.1, 8.0 Hz, H), 1.01 (s, H), 0.96 (s, H) and 0.87 (d, J = 6.6 Hz, H) ppm; LCMS
Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 1.94 minutes
(M+H) .
Pre aration 0 Com ounds 60 and 61
Synthetic Scheme 26
170a
Ts 60
(a) utylbromoacetate, K2C03, acetone; (b) Oxone, water, MeOH; (c) 5-fluoro(p-
tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)pyrrolo[2,3-b]pyridine, 7, K3PO4
X-Phos, Pd2(dba)3, 2-Me THF, water, 120 0C; (d) 25% NaOMe, MeOH; (e) TFA, CHzClz, 50 0C.
ion of (S)-tert-Butyl 2-(2-(2-chlor0fluor0pyrimidinylamin0)—3,3-dimethyl-
butylthi0)ethan0ate (168a)
To a ng suspension of (S)((2-chlorofluoropyrimidinyl)amino)-3,3-
dimethylbutane-l-thiol, 773, (1.50 g, 5.69 mmol) and K2C03 (2.36 g, 17.06 mmol) in acetone
(15 mL) was added tert—butyl cetate (1.26 mL, 8.53 mmol). The suspension was stirred
at room ature for 18 hours. The resulting solid was filtered, washed with acetone and the
filtrate was concentrated under reduced pressure. The crude residue was purified by silica gel
chromatography (0-30% EtOAc/Hexanes gradient) to afford 1.6 g of the desired product as an
off-white solid: LCMS nt 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, ion
Time = 3.81 minutes (M+H) 378.06.
Formation of (S)-tert-Butyl 2-(2-(2-chlor0flu0r0pyrimidinylamin0)—3,3-dimethylbutyl-
sulfonyl)ethanoate (169a)
Oxone (5.37 g, 8.73 mmol) was added to a solution of (S)—tert—Butyl 2-(2-(2-chloro
fluoropyrimidinylamino)-3,3-dimethyl-butylthio)ethanoate, 1683, (1.10 g, 2.91 mmol) in
methanol (50 mL) and water (20 mL) and the solution was stirred 3 hours at room temperature.
The solution was concentrated in vacuo to give a white residue that was dissolved in water (100
mL). The aqueous layer was extracted with EtOAc (3X 50 mL) and the combined organic phases
was dried (MgSO4), filtered and concentrated in vacuo to afford 750 mg of the d product as
a white solid: LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time
= 1.29 minutes (M+H) 410.19.
Formation of (S)-tert—Butyl 2-(2-(5-fluoro(5-fluorotosyl-1H-pyrrolo[2,3-b]pyridin
yl)pyrimidinylamino)-3,3-dimethylbutylsulfonyl)ethanoate (170a)
A solution of 5-flu0r0(p-tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-di0xab0rolan
yl)pyrrolo[2,3-b]pyridine, 7a, (0.76 g, 1.83 mmol), (S)—tert—Butyl 2-(2-(2-chloro
fluoropyrimidinylamino)-3,3-dimethylbutyl-sulfonyl)ethanoate, 169a, (0.75 g, 1.83 mmol)
and K3PO4 (0.93 g, 4.39 mmol) in 2-methyl THF (10 mL) and water (2 mL) was degassed under
a stream of nitrogen for 30 minutes. X-Phos (0.06 g, 0.12 mmol) and Pd2(dba)3 (0.03 g, 0.03
mmol) were added and the reaction mixture was heated at 115 0C in a pressure vial for 2.5 hours.
The reaction mixture was cooled to room temperature, filtered and concentrated in vacuo. The
residue was dissolved in EtOAc (50 mL) and washed with water. The organic layer was dried
), filtered and concentrated in vacuo. The crude product was purified via silica gel
chromatography (0-60% EtOAc/Hexanes gradient) to afford 1.0 g of the d t as a
foamy solid: LCMS Gradient 60-98% ACN/water, 0.9% formic acid, 7 minutes, C4, Retention
Time = 2.39 s (M+H) 564.34.
Formation of (S)-2—(2—(5-fluoro(5-fluoro—lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
ylamino)—3,3-dimethylbutylsulfonyl)ethanoic acid (60)
To a solution of (S)-tert—butyl 2-(2-(5-fiuoro(5-fiuorotosyl-1H—pyrrolo[2,3-
b]pyridinyl)pyrimidinylamin0)—3,3-dimethylbutylsulf0nyl)ethanoate, 170a, (1.00 g, 1.50
mmol) in THF (50 mL) was added NaOMe (1.30 mL of 25% on in MeOH, 1.45 mmol).
The yellow colored solution was stirred at room temperature for 30 minutes and then the mixture
was diluted with aqueous saturated NH4C1 solution. The solvent was removed under d
pressure and the residue was dissolved in water (50 mL). The aqueous layer was extracted with
EtOAc (3x50 mL) and dried (MgSO4), filtered and concentrated in vacuo. The product was
purified by silica gel chromatography (0-10% MeOH/CHgClz gradient) to afford 0.50 g of the
detosylated ester intermediate as a white solid.
The ester (0.50 g) was dissolved in CHzClz (4 mL) and roacetic acid (2 mL) was
added. The solution was heated at 50 0C for 2 hours. The solvent was evaporated under reduced
pressure. The residue was diluted with water (10 mL) and the solution was neutralized with
aqueous ted NaHC03 solution. The aqueous phase was extracted with EtOAc (3x 10 mL),
dried (MgSO4), filtered and trated in vacuo. The crude product was purified by silica gel
chromatography (0-15% MeOH/CHzClz gradient) to afford 204 mg of the desired product, 60, as
a white solid: LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time
= 2.01 minutes (M+H) 454.21.
The following compounds can be prepared in the same fashion using the procedure
described above:
\ \—/ —>/~—OH
CI 71 o
N N
(2-(2-(5-chloro-lH-pyrrolo ] pyridinyl)—5-fluoropyrimidinylamino)—3,3-
dimethylbutylsulfonyl)ethanoic acid (61)
1H NMR (300 MHz, MeOD) 8 8.95 (s, 1H), 8.29 - 8.14 (m, 2H), 8.08 (d, J: 4.0 Hz, 1H),
.26 (m, 1H), 4.21 (d, J: 15.3 Hz, 1H), 3.92 (dd, J: 30.0, 14.5 Hz, 2H), 3.77 - 3.57 (m, 1H),
1.10 (s, 9H); LCMS Gradient 60-98% ACN/water, 0.9% formic acid, 7 minutes, C4, Retention
Time = 2.23 minutes (M+H) 470.14.
Pre aration 0 Com ound 64
Synthetic Scheme 28
Nfi’NH ,— O
.— O O
O a “‘th j/ b
N \./\S N 5
‘ S
7\ n 7a
CI 7\ Cl 0
168a 175a
F F
Nfi—N.— H O
j’o ,— O
\:/\ c
\ NW“
N \ \e/\
F j "S —> N
F ,,s
N N
‘ N
176a
Ts H 64
(a) Oxone, MeOH; (b) 5-fiuoro(p-tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-dioxaborolan
yl)pyrrolo[2,3-b]pyridine, 7a, K3PO4 X-Phos, Pd2(dba)3, 2-Me THF, water, 120 0C; (c) NaOMe,
MeOH, THF.
Formation of tert-butyl-((S)—2(2-chlor0flu0r0pyrimidinylamin0)—3,3-
dimethylbutylsulfinyl)ethan0ate (1753)
Oxone (1.04 g, 1.69 mmol) was added to a stirring solution of (S)—tert—Butyl 2-(2-(2-
chlorofiuoropyrimidinylamino)-3,3-dimethyl-butylthio)ethanoate, 1683, (0.53 g, 1.41
mmol) in ol (20 mL). The solution was d for 15 minutes at room ature. The
solution was concentrated to give white residue which was dissolved in water (50 mL). The
aqueous layer was extracted with EtOAc (3x 25 mL) and the organic layer was dried (MgSO4),
d and concentrated in vacuo to give 540 mg of the desired product as a white solid: LCMS
Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 3.05 minutes
(M+H) 394.28.
tert-Butyl 2—((S)(5-flu0r0(5-flu0r0t0syl—1H-pyrrolo[2,3-b]pyridinyl)pyrimidin
ylamino)—3,3-dimethylbutylsulfinyl)ethanoate (176a)
A on of 5-fiuoro(p-tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-dioxaborolan
rolo[2,3-b]pyridine, 7a, (0.66 g, 1.58 mmol), tert—butyl((S)—2(2-chlorofiuoropyrimidin-
4-ylamino)-3,3-dimethylbutylsulfinyl)ethanoate, 17521, (0.50 g, 1.27 mmol) and K3PO4 (0.65 g,
3.05 mmol) in yl THF (10 mL) and water (2 mL) was degassed under a stream of nitrogen
for 30 minutes. X-Phos (0.04 g, 0.08 mmol) and Pd2(dba)3(0.02 g, 0.02 mmol) were added and
the reaction mixture was heated at 115 0C in a pressure vial for 4 hours. The reaction mixture
was cooled to room temperature, filtered and concentrated in vacuo. The residue was dissolved
in EtOAc (50 mL) and washed with water. The organic layer was dried (MgSO4), filtered and
concentrated in vacuo. The crude residue was purified by silica gel chromatography (0-60%
EtOAc/Hexanes nt) to afford 450 mg of the desired product as a white foamy solid:
LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 3.91
minutes (M+H) 648.40.
2-((S)(5-flu0r0(5-flu0ro-lH-pyrrolo [2,3-b] nyl)pyrimidinylamin0)—3,3-
dimethylbutylsulfinyl)ethan0ic acid (64)
To a solution of tert—butyl (5-fluoro(5-fluorotosyl-1H-pyrrolo[2,3-
b]pyridinyl)pyrimidinylamino)-3,3-dimethylbutylsulfinyl)ethanoate, 17621, (0.42 g, 0.64
mmol) in THF(10 mL) was added NaOMe (0.21 mL of 25% solution in MeOH, 0.96 mmol).
The on was stirred at room temperature for 30 minutes. Aqueous saturated NH4C1 solution
was added and the solvent was removed under reduced pressure. The residue was dissolved in
water (20 mL) and the aqueous layer was extracted with EtOAc (3 x 20 mL). The ed
organic phases were dried (MgSO4), filtered and concentrated in vacuo. The residue was
purified by silica gel chromatography (0-15% MeOH/CHgClz gradient) to afford 36 mg of the
desired product as a white solid: 1H NMR (400 MHz, MeOD) 8 8.60 - 8.52 (m, 1H), 8.46 (s,
1H), 8.32 (d, J: 5.3 Hz, 2H), 5.16 (m, 2H), 4.00 (d, J: 14.7 Hz, 1H), 3.80 (d, J: 14.7 Hz, 1H),
3.59(d, J = 13.9, 1H), 1.12 (s, 9H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes,
C18/ACN, Retention Time = 1.93 minutes (M+H) .
Pre aration 0 Com ounds 66 67 72 and 73
Synthetic Scheme 29
F F F
_, 0 HO
a ng HO
N\ / NL>—H , N\FS’/ NUCF3+ N‘N NUCF3
H of m5
CI 7\ CI”a“
180a 181a
//§’NH~' HO
"‘ HO
F 5 C N s
18°a—’ /: \ 7\ F
/ 7\
7a \N
N \ I
\ 182a N m 66
first diastereomer
' HO
,_ HO
F s d N s
“"a—’ / F
I \ 7\ / 7\
7a \N I \
N \
\ 184a N N
Ts H
second diastereomer
(a) i.TMS-CF3, CsF, THF, ii. TFA, CHzClz; (b) 5-fluoro(p-tolylsulfonyl)(4,4,5,5-
tetramethyl-l,3,2-dioxaborolanyl)pyrrolo[2,3-b]pyridine, 7a, X-phos, Pd2(dba)3, K3P04, 120
0C; (c) NaOMe, THF; (d) TBAF, THF.
Formation of (4R)—4-((2-chlorofluoropyrimidinyl)amino)—1,1,1-trifluoro-5,5-
dimethylhexan-Z-ol (180a) and (181a)
To a solution of (3R)[(2-chlorofiuoro-pyrimidinyl)amin0]-4,4-dimethyl-pentanal
(0.212 g, 0.817 mmol) and oromethyl)trimethylsilane (1.96 mL, 0.980 mmol) in THF (20
mL) was added cesium fluoride (0.001 g, 0.008 mmol). The reaction mixture was stirred at room
temperature for 1 hour. The reaction mixture was diluted into brine and EtOAc. The organic
phase was dried over MgSO4, filtered and concentrated in vacuo. The crude residue was purified
Via silica gel chromatography (EtOAc/Hexanes) to afford 190 mg of the silylated l. This
intermediate was diluted with dichloromethane (10 mL) and trifluoroacetic acid (1 mL) was
added to the mixture. The reaction mixture was stirred at room temperature for 30 minutes. The
reaction mixture was trated in vacuo and the resulting residue was purified Via silica gel
tography (60%EtOAc/Hexanes) to afford 60 mg of diastereomer 180a and 100 mg of
diastereomer 181a. Each diastereomer was taken on separately through the remaining synthetic
sequence.
Diastereomer, 180a: 1H NMR (400 MHZ, CDClg) 5 7.93 (dd, J: 43.4, 2.6 HZ, 1H), 5.10
(d, J: 8.9 HZ, 1H), 4.13 (dd, J: 15.8, 5.8 HZ, 1H), 3.94 — 3.71 (m, 1H), 2.05 (ddd, J: 13.7, 9.2,
2.1 HZ, 1H), 1.64 (t, J: 12.9 HZ, 1H), 1.05 (s, 9H); LCMS Gradient 10-90%, 0.1% formic acid,
minutes, C18/ACN, Retention Time = 3.18 minutes (M+H) 330.42.
Diastereomer, 181a: 1H NMR (400 MHZ, CDClg) 5 7.79 (d, J: 2.7 HZ, 1H), 5.30 (d, J:
11.6 HZ, 1H), 4.22 — 4.07 (m, 2H), 2.19 (ddd, J: 28.7, 15.3, 13.4 HZ, 1H), 1.74 — 1.59 (m, 1H),
1.04 (s, 9H). LCMS nt 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time
= 3.26 s (M+H) 330.42.
Formation of (4R)-1,1,1-trifluoro((5—fluoro(5-fluorotosyl-1H-pyrrolo[2,3-b]pyridin-
3-yl)pyrimidinyl)amino)-5,5-dimethylhexanol (182a)
A on of 5-fiu0r0(p-tolylsulf0nyl)(4,4,5,5-tetramethyl-1,3,2-di0xab0rolan
yl)pyrrolo[2,3-b]pyridine (0.091 g, 0.218 mmol), 7a, (4R)[(2-chlor0fiuor0-pyrimidin
yl)amin0]—1,1,1-trifiu0ro-5,5-dimethyl-hexanol, 180a, (0.060 g, 0.182 mmol) and K3P04
(0.116 g, 0.546 mmol) in 2-methyl THF (5 mL) and H20 (1.5 mL) was degassed under a stream
of nitrogen for 45 minutes. To the reaction e was added X-phos (0.010 g, 0.022 mmol)
and Pd2(dba)3 (0.004 g, 0.005 mmol). The on mixture was stirred at 120 0C in a pressure
tube for 2 hours. The aqueous phase was removed. The organic phase was filtered through a
pad of celite and concentrated in vacuo. The resulting residue was purified Via silica gel
chromatography OAc/Hexanes) to afford 60 mg of the desired product: 1H NMR (400
MHZ, CDCl3) 5 8.41 (s, 1H), 8.37 (dd, J: 8.9, 2.8 HZ, 1H), 8.24 (t, J: 8.7 HZ, 1H), 8.16 (d, J:
2.9 HZ, 1H), 8.00 (d, J: 8.4 HZ, 2H), 7.24 (d, J: 8.1 HZ, 2H), 4.92 (t, J: 7.8 HZ, 2H), 4.44 (t, J
= 10.3 HZ, 1H), 4.06 (s, 1H), 2.34 (s, 3H), 2.13 (dt, J: 13.6, 4.9 HZ, 1H), 1.66 (dd, J: 23.0, 9.3
HZ, 1H), 1.07 (d, J = 8.4 HZ, 9H). LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes,
Cl8/ACN, Retention Time = 4.02 min (M+H) 584.41.
The second reomeric alcohol, 181a, was also reacted in the same fashion to produce
the diastereomeric Suzuki product. 184a: 1H NMR (400 MHZ, CDClg) 5 8.53 (s, 1H), 8.47 (dt, J
= 11.5, 5.7 HZ, 1H), 8.30 (d, J: 1.9 HZ, 1H), 8.11 — 8.06 (m, 1H), 7.29 — 7.24 (m, 1H), 5.30 —
.21 (m, 1H), 4.61 (d, J: 4.1 HZ, 1H), 4.29 — 4.16 (m, 2H), 2.43 — 2.33 (m, 4H), 1.75 —1.66(m,
1H), 1.09 (d, J = 10.8 HZ, 9H). LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes,
C18/ACN, ion Time = 4.02 minutes (M+H) 584.44.
Formation of ,1,1-trifluoro((5—fluoro(5-fluoro-lH-pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amino)—5,5-dimethylhexanol (66 and 67)
To a solution of (4R)-1,1,1-triflu0r0((5-flu0r0(5-flu0rot0syl-1H—pyrrolo[2,3-
dinyl)pyrimidinyl)amin0)-5,5-dimethylhexanol, 182a, (0.053 g, 0.091 mmol) was
added NaOMe (0.019 g of 25% on in MeOH, 0.091 mmol). The reaction mixture was
stirred at room ature for 5 minutes. The reaction mixture was diluted into EtOAc and
aqueous saturated NaHC03 solution. The organic phase was dried over MgSO4, filtered and
concentrated in vacuo. The crude residue was purified by silica gel chromatography
(EtOAc/Hexanes) to afford 26 mg of the desired product, 66: 1H NMR (400 MHz, CDClg) 8
9.40 (s, 1H), 8.47 (dd, J: 9.3, 2.7 Hz, 1H), 8.15 (s, 1H), 8.10 (d, J: 2.7 Hz, 1H), 7.99 (d, J:
2.8 Hz, 1H), 5.54 (s, 1H), 4.84 (d, J: 7.5 Hz, 1H), 4.23 (t, J: 9.9 Hz, 1H), 3.91 (s, 1H), 2.07 —
1.97 (m, 1H), 1.62 (t, J: 13.0 Hz, 1H), 1.01 (s, 9H); LCMS nt 10-90%, 0.1% formic acid,
s, C18/ACN, Retention Time = 2.42 minutes (M+H) 430.44.
The second reomeric product, 67, was made by removal of the tosyl-protecting group
on intermediate, 1843, using the following procedure:
To a solution of (4R)—1,1,1-trifluor0[[5-flu0r0[5-flu0ro(p-
ulfonyl)pyrrolo[2,3-b]pyridinyl]pyrimidinyl]amin0]-5,5-dimethyl-hexanol, 184a,
(0.060 g, 0.103 mmol) in THF (5 mL) was added tetrabutylammonium fluoride (0.411 mL of 1
M solution, 0.412 mmol) at room temperature. The reaction mixture was stirred at room
temperature for 30 minutes. The reaction e was diluted into EtOAc and aqueous saturated
NaHC03 solution. The organic phase was dried over MgSO4, filtered and concentrated in vacuo.
The residue was purified by silica gel chromatography (50% EtOAc/Hexanes) to afford 30mg of
desired product. 1H NMR (400 MHz, CDClg) 8 10.15 (s, 1H), 8.49 (dd, J: 9.3, 2.6 Hz, 1H),
8.16 (s, 1H), 8.10 (d, J: 2.6 Hz, 1H), 8.06 (d, J: 3.0 Hz, 1H), 5.30 (d, J: 15.0 Hz, 1H), 5.19 —
.10 (m, 1H), 4.32 — 4.24 (m, 1H), 4.23 — 4.17 (m, 1H), 2.37 (dt, J: 14.9, 3.4 Hz, 1H), 1.85 —
1.71 (m, 2H), 1.09 (s, 9H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN,
Retention Time = 2.37 minutes (M+H) 430.47.
The following two diastereomers can be prepared in a similar fashion as the procedure
described above:
F F
iHO HO
N\ NH
,j J N\i,fi Mil—7*
F F
/ /
\ l ‘ I \ l ‘
\ I \
N H N
72 H 73
(4R)—4-((5-Fluoro(5-fluoro-lH-pyrrolo [2,3-b]pyridinyl)pyrimidinyl)amino)-5,5-
dimethylhexan-Z-ol (72 and 73)
Diastereomer 72: 1H NMR (400 MHz, CDC13) 8 9.99 (s, 1H), 8.60 (dd, J: 9.4, 2.7 Hz, 1H),
8.26 (s, 1H), 8.20 (d, J: 2.6 Hz, 1H), 8.10 (d, J: 3.2 Hz, 1H), 5.06 (t, J: 12.3 Hz, 1H), 4.28
(dd, J: 9.6, 7.2 Hz, 1H), 3.96 (d, J: 5.7 Hz, 1H), 2.71 (s, 1H), 1.97 (ddd, J: 14.2, 5.8, 2.9 Hz,
1H), 1.66-1.58 (m, 1H), 1.28 (dd, J = 6.5, 5.5 Hz, 4H), 1.04 (d, J = 10.1 Hz, 9H); LCMS
Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 1.93 minutes
(M+H) 376.46.
W0 2013/019828
reomer 73: 1H NMR (400 MHz, CDClg) 8 10.81 (s, 1H), 8.47 (dd, J: 9.3, 2.7 Hz, 1H),
8.14 (s, 1H), 8.05 (dd, J: 8.4, 2.9 Hz, 2H), 4.95 (s, 1H), 4.81 (d, J: 8.3 Hz, 1H), 4.31-4.14 (m,
1H), 3.72 (dd, J: 8.9, 6.0 Hz, 1H), 1.83-1.70 (m, 1H), 1.48-1.32 (m, 1H), 1.24-1.11 (m, 4H),
0.98 (s, 9H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time
= 2.01 minutes (M+H) 376.46.
Pre aration 0 Com ounds 70 and 71
Synthetic Scheme 30
F F F F
o ,, HO OH
_, HO OH
N/N'\'l_>_H_, a,N/NH——>N/Nl\'l_)_/b _,
\ N/N\H_)—/
\—/— \
‘ >\’N >\/N N
CI 7\ CI CI 7\‘ CI 7?
188a 189a 190a
first diastereomer second diastereomer
F F
FS’ HO OH HO OH
N / NW
\ N\ N|\-I_)—/
c N ,1 [\1
F .
S d
189a —> / 7\ —>
1 \
73 \N \
N fr? 7
\T 191a IZ/ 70, 71
(a) Pth-Br, LiHMDS, THF; (b) OsO4, 4-methylmorpholine e, THF, H20; (c) X-phos,
Pd2(dba)3, K3P04, 2-methyl THF, H20; (d) MeONa, THF; (e) 5-fiuoro(p-tolylsulfonyl)
(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)pyrrolo[2,3-b]pyridine, 7a, X-phos, Pd2(dba)3,
K3P04, 2-methyl THF, H20, 120 0C; (i) MeONa, THF
Formation of (R)chlor0-N—(2,2-dimethylhex-S-enyl)flu0r0pyrimidinamine
(18821):
To a solution of methyl(triphenyl)phosphonium bromide (0.983 g, 2.753 mmol) in THF
(40 mL) was added LiHMDS (2.753 mL of 1 M on, 2.753 mmol). The reaction mixture
was stirred at room temperature for 1 hour. A solution of (3R)[(2-chlorofiuoro-pyrimidin-
4-yl)amino]-4,4-dimethyl-pentanal (0.550 g, 2.118 mmol) in THF (20 mL) was added to the
reaction mixture resulting in significant precipitate formation. The reaction mixture was stirred
at room temperature for 45 minutes. The reaction mixture was diluted into EtOAc and aqueous
saturated NH4C1 solution. The organic phase was separated, dried over MgSO4, filtered and
concentrated in vacuo. The resulting residue was purified by silica gel chromatography
(EtOAc/Hexanes) to afford 180 mg of desired product: 1H NMR (400 MHz, CDClg) 8 7.80 (d, J
= 2.8 Hz, 1H), 5.76
— 5.60 (m, 1H), 5.05 — 4.91 (m, 2H), 4.82 (t, J: 22.1 Hz, 1H), 4.26 — 4.11
(m, 1H), 2.58 — 2.48 (m, 1H), 2.07 — 1.92 (m, 1H), 0.94 (s, 9H); LCMS Gradient , 0.1%
formic acid, 5 minutes, N, Retention Time = 3.60minutes (M+H) 258.38.
Formation of (4R)((2-chlor0fluor0pyrimidinyl)amin0)-5,5-dimethylhexane-1,2-diol
(189a) and (19021):
To a on of (R)chloro-N-(2,2-dimethylhexenyl)fiuoropyrimidinamine,
18821, (0.140 g, 0.543 mmol) in THF (10 mL) and H20 (10 mL) was added osmium tetraoxide
(0.138 g, 0.014 mmol) and 4-methylmorpholineoxide (0.085 mL, 0.815 mmol). The reaction
mixture was stirred at room ature for 2.5 hours. The mixture was d with aqueous
saturated g. The resulting mixture was stirred for 20 minutes and extracted with EtOAc.
The organic phase was dried over MgSO4, filtered and concentrated in vacuo. The resulting
residue was purified by silica gel chromatography (MeOH/CH2C12) to afford 90 mg of the first
diastereomer, 1893, and 65 mg of the second diastereomer, 1903.
Di3stere0mer 1893: 1H NMR (400 MHz, CDClg) 8 7.86 (d, J: 2.6 Hz, 1H), 5.00 (d, J
= 9.2 Hz, 1H), 4.17 (s, 1H), 4.08 — 3.96 (m, 1H), 3.49 (dd, J: 19.2, 8.4 Hz, 3H), 2.15 (s, 1H),
1.74 (ddd, J: 13.2, 10.8, 2.2 Hz, 1H), 1.27 (dd, J: 19.3, 7.0 Hz, 1H), 0.92 (d, J: 10.5 Hz, 9H);
LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.24
minutes (M+H) 292.36.
Di3stere0mer 1903: 1H NMR (400 MHz, CDClg) 8 7.88 (d, J: 2.7 Hz, 1H), 5.29 (d, J:
8.9 Hz, 1H), 4.12 — 4.02 (m, 1H), 3.74 (d, J: 9.0 Hz, 2H), 3.50 (s, 1H), 3.22 (s, 1H), 2.12 (s,
1H), 1.95 (dt, .1: 14.7, 4.2 Hz, 1H), 1.56 (ddd, J: 14.8, 9.2, 7.4 Hz, 1H), 0.99 (s, 9H); LCMS
Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.24 minutes
(M+H) 292.39.
Formation of (4R)—4-((5-flu0r0(5-flu0r0t0syl-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)3min0)—5,5-dimethylhex3ne—1,2-diol (1913)
To a solution of (4R)[(2-chlorofiuoro-pyrimidinyl)amino]-5,5-dimethyl-hexane-
1,2-diol, 1893, (0.090 g, 0.309 mmol), 5-fiuoro(p-tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)pyrrolo[2,3-b]pyridine (0.167 g, 0.401 mmol) and K3PO4 (0.196 g, 0.926
mmol) in 2-Methyl THF (15 mL) and H20 (2 mL) was degassed under a stream of nitrogen for
45 minutes. To the reaction mixture was added X-phos (0.018 g, 0.037 mmol) and Pd2(dba)3
(0.007 g, 0.008 mmol). The reaction mixture was stirred at 120 0C in a pressure tube for 2 hours.
The aqueous phase was removed and the c phase was d through a pad of celite and
concentrated in vacuo. The ing crude material was purified by silica gel tography
(60%EtOAc/Hexanes) to afford 140 mg of the desired product, 1913: 1H NMR (400 MHz,
CDCl3) 5 8.51 (dt, J: 7.6, 3.8 Hz, 1H), 8.48 (s, 1H), 8.32 (d, J: 1.7 Hz, 1H), 8.12 (dd, J: 7.2,
.7 Hz, 3H), 7.30 (d, J: 8.1 Hz, 2H), 4.99 (d, J: 10.1 Hz, 1H), 4.42 — 4.28 (m, 2H), 3.72 — 3.47
(m, 3H), 2.40 (s, 3H), 2.19 — 2.09 (m, 1H), 1.97 — 1.83 (m, 1H), 1.49 — 1.34 (m, 1H), 1.06 (s,
9H); LCMS nt 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 3.53
minutes (M+H) 546.49.
The second diastereomeric 1,2-diol, 1903, was also reacted in the same fashion to
produce the diastereomeric Suzuki product. 1933: 1H NMR (400 MHz, CDClg) 8 8.56 — 8.49
(m, 2H), 8.32 (dd, J: 2.8, 1.1Hz, 1H), 8.15 — 8.02 (m, 3H), 7.30 (d, J: 9.2 Hz, 2H), 5.21 — 5.12
(m, 1H), 4.27 (td, J: 9.7, 3.0 Hz, 1H), 3.93 — 3.74 (m, 2H), 3.55 (d, J: 7.7 Hz, 1H), 3.11 (s,
1H), 2.39 (s, 3H), 2.01 (m, 1H), 1.65 — 1.50 (m, 1H), 1.05 (s, 9H). LCMS Gradient 10-90%,
0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 3.54 minutes (M+H) 546.49.
Form3ti0n of (4R)—4-((5-flu0r0(5-flu0r0—lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)3min0)—5,5-dimethylhex3ne—1,2-diol (70, 71)
To a on of (4R)—4-[[5-fluoro[5-fluoro(p-tolylsulfonyl)pyrrolo[2,3-b]pyridin
yl]pyrimidinyl]amino]-5,5-dimethyl-hexane-1,2-diol, 1913, (0.140 g, 0.257 mmol) in THF
(10 mL) was added sodium methoxide (0.055 g of 25% w/w solution, 0.257 mmol). The
reaction e was stirred at room temperature for 5 minutes. The reaction e was
d into EtOAc and aqueous saturated NaHC03 solution. The organic phase was dried over
MgSO4, filtered and concentrated in vacuo. The crude residue was purified Via silica gel
chromatography (MeOH/CHZClz) followed by ative HPLC to afford 10 mg pure desired
product: 1H NMR (400 MHz, d6-DMSO) 5 8.61 (dd, J: 9.9, 2.6 Hz, 1H), 8.26 (s, 1H), 8.18 (s,
1H), 8.11 (d, J: 4.1 Hz, 1H), 4.66 (d, J: 10.4 Hz, 1H), 4.43 (s, 1H), 4.29 (d, J: 4.1 Hz, 1H),
4.04 (s, 1H), 3.35 (s, 1H), 3.26 (d, J: 6.1 Hz, 2H), 1.69 (t, J: 12.3 Hz, 1H), 1.59 — 1.45 (m,
1H), 0.96 (s, 9H). LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention
Time = 1.76 minutes (M+H) 392.46.
The second diastereomeric 1,2-diol, 1933, was also reacted in the same fashion to
produce the diastereomeric final product: 1H NMR (400 MHz, CDC13) 8 8.61 (dd, J = 9.6, 2.7
Hz, 1H), 8.17 (s, 2H), 8.01 (d, J: 4.1 Hz, 1H), 4.53 (d, J: 10.0 Hz, 1H), 3.75 — 3.56 (m, 2H),
3.48 (dd, J: 11.0, 6.3 Hz, 1H), 2.08 — 1.97 (m, 1H), 1.75 (dt, J: 28.7, 9.4 Hz, 1H), 1.04 (s, 9H).
LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 1.79
minutes (M+H) .
Pre arationo Com ounds 75 76 79 85 93 and 95
Synthetic Scheme 31
o o o o c
FC3 FC3 b
OH _a> DB _> iN\,\1
NH OEt
of ._
CF3 ‘2‘0
‘N/ \
195a 196a 7“
INF 197a [Q
(a) i. carbonyl diimidazole, CH2C12; ii. ium ethyl malonate, MgClz, DMAP, Eth, THF,
CH3CN; (b) i. ammonium acetate, EtOH, reflux; ii. sodium cyanoborohydride, AcOH, EtOAc;
iii. chlorofluoropyrimidine, 1PerEt, EtOH; (c) 5-fluoro(p-tolylsulfonyl)—3-(4,4,5,5-
tetramethyl-l,3,2-dioxaborolanyl)pyrrolo[2,3-b]pyridine, 7a, X-phos, Pd2(dba)3, K3P04, 2-
methyl THF, H20, 135 OC, microwave; (d) LiOH, MeOH, 65 0C.
Formation of ethyl 3-0x0(1-(triflu0r0methyl)cyclopentyl)pr0pan0ate (195a).
To a on of 1-(trifluoromethyl)cyclopentanecarboxylic acid (1.30 g, 7.14 mmol) in
dichloromethane (14 mL) was added carbonyl azole (5.46 g, 33.68 mmol). After stirring 5
hours at room temperature, the reaction was concentrated in vacuo to a residue.
In another flask, 3-ethoxyoxo-propanoate (Potassium Ion) (2.03 g, 11.90 mmol) was
mixed with dichloromagnesium (1.13 g, 11.90 mmol) and DMAP (72.65 mg, 0.59 mmol) in THF
(23.13 mL) and acetonitrile (11.57 mL). After 3 hours, the above crude on in THF (10 mL)
was added, followed by triethylamine (1.66 mL, 11.90 mmol). The reaction was allowed to stir
at 25 0C for 8 hours. The crude product was isolated by extracting into ethyl acetate (2 x 100
mL) vs 1N HCl (100 mL), dried over sodium sulfate and concentrated in vacuo to afford 1.0 g of
—124—
the desired product as a yellow oil: 1H NMR (300 MHz, CDClg) 8 12.58 (s, H), 5.32 (s, H), 4.27
- 4.18 (m, 2 H), 2.33 - 2.14 (m, 2 H), 2.05 - 1.85 (m, 4 H), 1.77 - 1.69 (m, 2 H) and 1.30 (td, J:
7.1, 3.2 Hz, 3 H) ppm.
Formation of (+/-)-ethyl hlor0flu0r0pyrimidinylamin0)(1-(triflu0r0methyl)—
cyclopentyl)propanoate (196a)
A solution of ethyl 3-oxo(1-(trifluoromethyl)cyclopentyl)propanoate, 195a, (0.500 g,
1.982 mmol) and ammonium acetate (0.458 g, 5.946 mmol) in EtOH (20 mL) was warmed to
reflux for 3 hours. The crude reaction was concentrated in vacuo to a residue and redissolved in
EtOAc (20 mL). The new mixture was cooled to 0 0C, and acetic acid (0.338 mL, 5.946 mmol)
and sodium cyanoborohydride (0.498 g, 7.928 mmol, 4 equiv) were added to the e. The
reaction was allowed to warm to room temperature and stirred overnight. The reaction was
quenched with aqueous ted sodium bicarbonate solution (10 mL) and extracted with ethyl
acetate (2 x 20 mL). The organic phase was concentrated in vacuo and redissolved in EtOH (20
mL). To the solution was added 2,4-dichlorofluoro-pyrimidine (0.496 g, 2.973 mmol) and
N,N—diisopropylethylamine base (2.0 mL). The reaction was refluxed for 12 hours and then
concentrated in vacuo. The residue was purified by silica gel chromatography ) yielding
84 mg of the desired product as a yellow oil: LCMS Gradient 10-90%, 0.1% formic acid, 5
minutes, C18/ACN, Retention Time = 3.54 minutes (M+H) 384.40.
Formation of ethyl 3-(5-flu0r0(5-flu0r0t0syl—1H-pyrrolo[2,3-b]pyridin
yl)pyrimidinylamin0)(1-(triflu0r0methyl)cyclopentyl)pr0pan0ate (197a)
To a solution of c ethyl 3-(2-chlorofluoropyrimidinylamino)—3-(1-
(trifluoromethyl)cyclopentyl)propanoate, 196a, (0.084 g, 0.219 mmol) in THF (10 mL) and
water (1 mL) was added 5-fluoro(p-tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-
2-yl)pyrrolo[2,3-b]pyridine, 7a, (0.137 g, 0.328 mmol) and potassium phosphate (0.140 g, 0.657
mmol). The resulting mixture was degassed under a stream of nitrogen for 10 minutes. To the
reaction was then added X-Phos (0.010 g, 0.021 mmol) and Pd2(dba)3 (0.010 g, 0.011 mmol).
The reaction was ated for 15 minutes at 135 CC in a microwave. The resulting mixture was
concentrated in vacuo to a brown oil which was d by silica gel chromatography
(EtOAc/CHzClz) to afford 80 mg of the desired product as a pale yellow solid: LCMS Gradient
-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 4.22 minutes (M+H) 638.42.
Formation of (+/-)(5-fluoro-Z-(S-fluoro-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
o)—3-(1-(trifluoromethyl)cyclopentyl)pr0pan0ic acid (75)
To a solution of racemic ethyl 3-(5-fluoro(5-fluorotosyl-1H—pyrrolo[2,3-b]pyridin-
yrimidinylamino)(1-(trifluoromethyl)cyclopentyl)propanoate, 197a, (0.080 g, 0.120
mmol) in THF (10 mL) was added lithium hydroxide (2 mL of 2N solution). The reaction was
refluxed for 3 hours and cooled to room temperature. The non aqueous solvent was removed
under reduced pressure and the aqueous layer was adjusted to pH 4. The aqueous layer was
extracted with ethyl acetate (2 x 20 mL). The ed organic phases concentrated in vacuo to
afford 16 mg of the desired product as a pale yellow solid: 1H NMR (300 MHz, d6-DMSO) 8
8.51 (s, H), 8.25 - 7.97 (m, 2 H), 7.58 - 7.42 (m, 2 H), 7.12 (d, J: 7.5 Hz, H), 4.35 (m, H), 2.85
(m, 2 H) and 1.27 - 0.70 (m, 8 H) ppm; LCMS Gradient , 0.1% formic acid, 5 minutes,
C18/ACN, Retention Time = 2.55 minutes (M+H) 456.45.
The following analogs can be prepared in a r fashion as the procedure described
above Compound 75:
H 79
(+/-)-5,5,5-Triflu0r0(5-flu0r0(5-flu0r0-1H-pyrrolo[2,3-b]pyridinyl)pyrimidin
ylamino)—4,4-dimethylpentanoic acid (79)
1H NMR (300 MHz, MeOD) 8 8.66 (d, J: 8.9 Hz, H), 8.29 (s, H), 8.22 - 8.18 (m, 2 H),
4.16 - 4.06 (m, H), 2.97 (s, H), 2.92 (s, H), and 1.27 - 1.21 (m, 6 H) ppm; LCMS Gradient 10-
90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.22 minutes (M+H) 430.41.
H 76
(+/-)Fluor0((5-flu0r0(S-fluoro-lH-pyrrolo [2,3-b] pyridinyl)pyrimidin
n0)—4,4-dimethylpentan0ic acid (76)
1H NMR (300 MHz, MeOD) 8 8.70 (dd, J: 9.7, 2.8 Hz, 1H), 8.15 (dd, J: 6.1, 4.0 Hz,
2H), 8.02 (d, J = 4.1 Hz, 1H), 5.23 (dd, J: 10.7, 3.1 Hz, 1H), 4.30 (d, J: 47.9 Hz, 2H), 3.63 (d,
J: 18.2 Hz, 1H), 3.31 (dt, J: 3.3, 1.6 Hz, 3H), 2.83 (dd, J: 15.3, 3.3 Hz, 1H), 2.63 (dd, J:
.3, 10.8 Hz, 1H), 1.07 (s, 6H); LCMS nt 10-90%, 0.1% formic acid, 5 minutes,
C18/ACN, (M+H) 394.
N ,
\ N\H_>—OH
\ D
N fi 91
(R)((5-flu0r0(5-flu0r0-lH-pyrrolo [2,3-b]pyridinyl)pyrimidinyl)amino)—3-(1-
methylcyclopr0pyl)pr0pan0ic acid (91)
LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, (M+H) 374.
WO 19828
H 93
(+/-)((5-Flu0r0(5—flu0r0—lH-pyrrolo [2,3-b] pyridinyl)pyrimidinyl)amino)—3-(1-
(trifluor0methyl)cyclopropyl)pr0panoic acid (93)
LCMS nt 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.37
minutes (M+H) 428.49.
N/\/$*NH/ O
FYr?\
N H 95
(+/-)(Bicyclo[2.2.1]heptanyl)(5-flu0r0(5-flu0r0-lH-pyrrolo[2,3-b]pyridin
yl)pyrimidinylamin0)propanoic acid (95)
1H NMR (400 MHz, CDgOD) 5 8.62 (dd, J: 9.3, 2.6 Hz, 1H), 8.48 (t, J: 5.4 Hz, 1H),
8.32 (s, 1H), 8.29 (d, J: 5.5 Hz, 1H), 5.42 (dd, J: 10.0, 3.4 Hz, 1H), 2.84 (m, 2H), 2.18 (s, 1H),
1.65 (m, 4H), 1.39 (m, 6H); LCMS Gradient 10-90%, 0.1% formic acid, 5 s, C18/ACN,
Retention Time = 2.12 minutes (M+H) 414.28.
H 84
(+/-)Fluor0((5-flu0r0(5-flu0ro-1H-pyrrolo [2,3-b] pyridinyl)pyrimidin
yl)amin0)(flu0r0methyl)methylpentan0ic acid (84)
1H NMR (300 MHz, MeOD) 8 8.67 (dd, J: 9.6, 2.8 Hz, 1H), 8.16 (m, 2H), 8.04 (d, J:
4.0 Hz, 1H), 5.38 (dd, J: 10.8, 3.2 Hz, 1H), 4.72 - 4.23 (m, 4H), 2.86 (dd, J: 15.5, 3.3 Hz, 1H),
2.70 (dd, J = 15.5, 10.9 Hz, 1H), 1.15(s, 3H); LCMS Gradient 10-90%, 0.1% formic acid, 5
minutes, C18/ACN, (M+H) 412.
(+/-)((5-chlor0(5-flu0r0-lH-pyrrolo ] nyl)pyrimidinyl)amin0)-4,4-
dimethylpentanoic acid (85)
Carboxylic acid, 203, was prepared in same fashion as carboxylic acid, 4, (see Synthetic
Scheme 1) using 5-chloro(5-chloro(methylsulfinyl)pyrimidinyl)tosyl-1H-pyrrolo[2,3-
b]pyridine instead of sulfoxide, 1: 1H NMR (400 MHZ, MeOD) 5 8.68 (dd, J: 9.3, 2.7 Hz, 1H),
8.47 (s, 1H), 8.38 (s, 1H), 8.32 (s, 1H), 5.17 (dd, J: 9.8, 3.5 Hz, 1H), 2.87 (m, 2H), 1.06 (s, 9H);
LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.1 minutes
(M+H) 383.38.
Pre arationo Com ounds 77 78 83 86 and 94
tic Scheme 32
o H2N o
H _a, 0E1 _. F‘S—NH
QTQ\N_/N\‘Bo 205a 206a 7a
9”ng 951915780;\ \
NTS N N
H H
207a 880”
(a) NH4OAc, malonic acid, EtOH, reflux; (b) 2,4-dichlorofluoropyrimidine, iPerEt, THF,
MeOH, 95 0C; (c) 5-fluoro(p-tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-dioxaborolan
yl)pyrrolo[2,3-b]pyridine, K3PO4 X-Phos, Pd2(dba)3, 2-MeTHF, water, 120 0C; (d) 4N HCl,
CH3CN, 65 0C; (e) LiOH, water, THF.
Formation of (+/-)-ethylamin0(1-methylcyclohexyl)pr0pan0ate (205a)
A on of 1-methylcyclohexanecarbaldehyde (2.75 g, 21.79 mmol), malonic acid
(2.27 g, 21.79 mmol) and ammonium acetate (3.36 g, 43.58 mmol) in absolute ethanol (5 mL)
was heated at reflux for 4 hours. The solid was filtered and washed with ethanol (10 mL). The
filtrate was concentrated in vacuo to give a thick oil that was diluted with CHZClz (50 mL). The
precipitated solid was filtered and the filtrate was concentrated in vacuo to afford 4.3 grams of a
yellow oil. Concentrated sulfuric acid (1.16 mL, 21.79 mmol) was added to a solution of the
crude material in absolute l (25 mL) and the mixture was refluxed for 12 hours. The
solution was cooled to room temperature and concentrated in vacuo to give a thick oil. Water
(10 mL) was added and the solution was neutralized with 2N NaOH. The aqueous layer was
extracted with EtOAc (3x 25 mL), dried (MgSO4), filtered and concentrated in vacuo to afford
2.4 grams of desired product: LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN,
Retention Time = 1.54 minutes (M+H) 214.14.
Formation of (+/-)-ethyl 3-(2-chlor0flu0rropyrimidinylamin0)(1-
methylcyclohexyl)pr0pan0ate (206a)
A mixture of 2,4-dichlorofluoro-pyrimidine (1.83 g, 85.33 mmol), racemic 3-
amino(1-methylcyclohexyl)propanoate, 205a, (2.34 g, 11.0 mmol) and MN-
diisopropylethylamine (4.79 g, 27.50 mmol) in THF (40 mL) and methanol (10 mL) was heated
at 95 0C for 3 hours. The solution was cooled to room temperature and the t was
evaporated under reduced pressure. The crude residue was purified by silica gel tography
(0-60% EtOAc/Hexanes gradient) to afford 620 mg of the desired product as a white foamy
solid: 1H NMR (400 MHz, CDC13)5 7.80 (d, J: 2.6 Hz, 1H), 5.37 (m, 1H), 4.59 (m, 1H), 4.00
(q, 7.2 Hz, 2H), 2.62 (dd, J: 14.7, 3.8 Hz, 1H), 1.67(m,1H),1.17 (m, 10H), 1.10 (t, J: 7.1 Hz,
3H), 0.85 (s, 3H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention
Time = 3.69 minutes (M+H) 344.39.
Formation of ethyl 3-(5-flu0r0(5-flu0r0t0syl—1H—pyrrolo[2,3-b]pyridin
yl)pyrimidin-4ylamin0)—3-(1- cyclohexyl)pr0pan0ate (207a)
A solution of 5-fluoro(p-tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-dioxaborolan
yl)pyrrolo[2,3-b]pyridine, 7a, (0.51 g, 1.22 mmol), racemic ethyl 3-(2-chloro
fluorropyrimidinylamino)(1-methylcyclohexyl)propanoate, 206a, (0.35 g, 1.02 mmol) and
K3P04 (0.52 g, 2.44 mmol) in 2-methyl THF (8 mL) and water (2 mL) was degassed under a
stream of nitrogen for 30 minutes. X-Phos (0.03 g, 0.07 mmol) and Pd2(dba)3 (0.02 g, 0.02
mmol) were added and the resulting mixture was heated at 115 0C in a re vial for 4 hours.
The reaction mixture was cooled to room temperature, filtered and concentrated in vacuo. The
residue was dissolved in EtOAc (50 mL) and washed with water. The c layer was dried
(MgSO4), filtered and concentrated in vacuo. The crude residue was purified via silica gel
chromatography (0-35% EtOAc/Hexanes gradient) to afford 486 mg of the desired product as a
white solid: 1H NMR (400 MHz, CDClg) 5 8.50 (m, 1H), 8.48 (s, 1H), 8.24 (d, J: 1.7 Hz, 1H),
8.01 (m, 3H), 7.20(m, 2H), 5.12 (m, 1H), 4.88 (m, 1H), 3.89(q, J: 7.4 Hz, 2H), 2.71 (dd, J:
14.5, 3.8 Hz, 1H), 2.39 ? 2.32 (m, 1H), 2.31 (s, 3H), 1.60-1.32 (m 10H), 0.95 (t, J=7.4 3H).
0.87 (s, 3H); LCMS Gradient 60-98%, 0.1% formic acid, 7 minutes, C18/ACN, ion Time
= 2.81 minutes (M+H) 599.19.
Formation of (+/-)-ethyl 3-(5-flu0r0(5—flu0r0-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
ylamino)—3-(1-methylcyclohexyl)pr0pan0ate (77)
To a solution of ethyl 3-(5-fluoro(5-fluorotosyl-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidin-4ylamino)(1- methylcyclohexyl)propanoate, 207a, (0.49 mg, 0.81 mmol) in
CH3CN (3 mL) was added HCl (2.0 mL of 4M solution in dioxane, 8.1 mmol). The solution was
heated at 70 0C for 3 hours and then cooled to room temperature. The solvent was removed
under reduced pressure and the product was lized with s saturated NaHC03
solution. The precipitate was ted with EtOAc (3x10 mL). The solvent was dried (MgSO4),
filtered and concentrated in vacuo. The crude residue was ed by silica gel chromatography
(0-70%EtOAc/Hexanes nt) to afford 230 mg of the desired product as an off-white solid:
1H NMR (400 MHz,CDC13)8 9.55 (s, 1H), 8.58 (dd, J: 9.3, 2.5 Hz, 1H), 8.18 (s, 2H), 8.00 (d,
J: 2.7 Hz, 1H), 5.13 (brs, 1H), 4.95 (t, J: 8.2 Hz, 1H), 3.84 (m, 2H), 2.72 (m, 1H), 2.38 (m,
1H), 1.67 - 1.15 (m, 10H), 0.94 (m, 3H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes,
C18/ACN, ion Time = 2.77 s (M+H) 444.36.
3-(5-flu0r0(5-flu0r0-lH-pyrrolo [2,3-b] pyridinyl)pyrimidinylamin0)(1-
methylcyclohexyl)propan0ic acid (78)
LiOH (0.118 mg, 4.927 mmol) was added to a solution of ethyl 3-(5-fluoro(5-fluoro-
1H—pyrrolo [2,3 -b]pyridin-3 -yl)pyrimidinylamino)-3 -(1 -methylcyclohexyl)-propanoate, 77,
(0.23 g, 0.49 mmol) in water (5 mL) and THF (5 mL). The solution was stirred at 95 0C for 18
hours and then cooled to room temperature. The t was removed under reduced pressure.
The residue was diluted with water (10 mL) and neutralized with 2N HCl. The ing
precipitate was extracted with EtOAc (3x10 mL). The organic phase was dried (MgSO4),
filtered and concentrated in vacuo to afford 210 mg of the desired product as an off-white solid:
1H NMR (400 MHz, CDgOD) 5 8.78 (dd, J: 9.7, 2.7 Hz, 1H), 8.16 (s, 2H), 7.99 (d, J: 4.1 Hz,
1H), 5.20 (d, J: 9.9 Hz, 1H), 2.86 - 2.69 (m, 1H), 2.53 (dd, J: 14.7, 11.0 Hz, 1H), 1.76 - 1.56
(m, 2H), 1.53 (m, 4H), 1.29 (m, 4H), 1.02 (s, 3H); LCMS Gradient 10-90%, 0.1% formic acid, 5
minutes, C18/ACN, Retention Time = 2.20 s (M+H) 416.27.
i o
N/NH OH
\ [\
NM 83
(+/-)(2-(5-Chlor0-lH-pyrrolo [2,3-b]pyridinyl)—5-flu0r0pyrimidinylamin0)—3-(1-
cyclohexyl)propan0ic acid (83)
Compound 83 was synthesized in a manner similar to 3-(5-fluoro(5-fluoro-1H-
pyrrolo[2,3-b]pyridinyl)pyrimidinylamino)(1-methylcyclohexyl)propanoic acid, 78,
using 5 -chloro(p-tolylsulfonyl)-3 -(4,4,5 ,5 -tetramethyl- 1 ,3 ,2-dioxaborolanyl)pyrrolo [2,3 -
b]pyridine instead of boronate ester, 7a: 1H NMR (400 MHz, MeOD) 5 9.05 (d, J = 2.1 Hz, 1H),
8.39 - 8.24 (m, 2H), 8.16 (d, J: 4.9 Hz, 1H), 5.23 (d, J: 10.4 Hz, 1H), 2.86 (d, J: 15.6 Hz,
1H), 2.65 (m, 1H), 1.58 (m, 7H), 1.37 (m, 3H), 1.05 (s, 3H); LCMS Gradient 10-90%, 0.1%
formic acid, 5 minutes, C18/ACN, Retention Time = 2.37 minutes (M+H) 442.36.
.. o
N/NH OH
\ ]\
NHN 86
3-(1-Adamantyl)—3-[[5-flu0r0(5-flu0r0-1H-pyrr010[2,3-b]pyridinyl)pyrimidin
yl]amin0]pr0pi0nic acid (86)
nd 86 was synthesized in a manner similar to 3-(5-fluoro(5-fluoro-1H-
pyrrolo[2,3-b]pyridinyl)pyrimidinylamino)(1-methylcyclohexyl)propanoic acid, 78,
using adamantinecarbaldehyde as the ng material: 1H NMR (400 MHz, CDgOD) 5 8.75
(dd, J: 9.7, 2.7 Hz, 1H), 8.18 (s, 2H), 8.00 (d, J: 4.2 Hz, 1H), 2.81 (dd, J: 15.2, 3.1 Hz, 1H),
2.55 (dd, J: 15.2, 10.8 Hz, 1H), 2.00 (m, 3H), 1.82 -1.49 (m, 12H); LCMS Gradient 10-90%,
0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.40 minutes (M+H) 454.34.
..— O
N /NH OH
\ [\
NHN 94
(+/-)(1-Adamantyl)—3-[[2-(5-chlor0-1H-pyrr010[2,3-b]pyridinyl)—5-flu0r0-pyrimidin
yl]amin0]pr0pan0ic acid (94)
Compound 94 was synthesized in a manner similar to 3-(1-Adamantyl)[[5-fluoro(5-
fluoro-1H—pyrrolo[2,3-b]pyridinyl)pyrimidinyl]amino]propionic acid, 86, using 5-chloro
(p-tolylsulfonyl)-3 -(4,4,5 ,5 -tetramethyl- 1 ,3 ,2-dioxaborolanyl)pyrrolo [2,3 -b]pyridine d
of boronate ester, 73: 1H NMR (400 MHz, CDgOD) 8 9.02 (d, J: 2.3 Hz, 1H), 8.40 - 8.24 (m,
2H), 8.18 (d, J: 5.0 Hz, 1H), 4.91 (d, J: 11.6 Hz, 1H), 2.88 (dd, J: 16.0, 2.8 Hz, 1H), 2.65
(dd, J: 15.9, 11.0 Hz, 1H), 2.01 (s, 3H), 1.77 (dd, J: 27.9, 11.9 Hz, 12H); LCMS Gradient 10-
90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time = 2.60 minutes (M+H) 470.27.
Pre aration 0 Com ound 68
tic Scheme 33
F F F ,N
b — r
Ni a / NH OMS N / NH N3 _, N / NH N
H y \H H ‘H y
0' 7“\ C' 7\ 7°\
75;,l 216a 217a
or? —’FC ijHd NfgiNHNNJAOHN
F /\ \OB\O \/N/\7\N
218a H N’ m\z/ 68
(a) NaNg, DMF, 70 0C; (b) propargyl alcohol, THF, toluene, 120 0C; (c) 5-fluoro(p-
tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)pyrrolo[2,3-b]pyridine, K3P04, X-
Phos, Pd2(dba)3, 2-MeTHF, water, 120 0C; (d) 4N HCl, CH3CN, 65 0C.
Formation of (S)-N-(1-azido-3,3-dimethylbutanyl)—2-chlorofluoropyrimidinamine
(216a)
A mixture of (S)((2-chlor0fiuoropyrimidinyl)amino)-3,3-dimethylbutyl
methanesulfonate, 75a, (2.37 g, 7.26 mmol) and sodium aZide (1.89 g, 29.07 mmol) in DMF (50
mL) was heated at 70 0C for 6 hours. The reaction mixture was cooled to room temperature and
poured into water. The aqueous phase was extracted with EtOAc (2x 25 mL), dried (MgSO4),
filtered and concentrated in vacuo. The crude product was purified Via silica gel
chromatography (0-20% EtOAc/Hexanes gradient) to afford 1.2 g of the desired product as a
white crystalline solid: 1H NMR (400 MHZ, CDClg) 8 7.86 (dd, J: 2.6, 1.1 HZ, 1H), 5.07 (m,
1H), 4.32-4.09 (m, 1H), 3.60 (dd, J: 12.8, 3.9 HZ, 1H), 3.34 (dd, J: 12.8, 7.6 HZ, 1H), 0.96 (m,
9H); LCMS Gradient 10-90%, 0.1% formic acid, 5 s, C18/ACN, Retention Time = 3.28
s (M+H) 273.14.
Formation of -(2-((2-chlorofluoropyrimidinyl)amino)-3,3-dimethylbutyl)—1H-
1,2,3-triazolyl)methanol (217a)
A mixture of propynol (0.22 g, 3.85 mmol) and (S)-N-(1-aZid0-3,3-dimethylbutan-
2-chlorofiu0ropyrimidinamine, 216a, (0.21 g, 0.77 mmol) in THF (4 mL) and toluene
(4 mL) was heated in a pressure Vial at 120 0C for 8 hours. The reaction mixture was cooled to
room temperature and concentrated under reduced pressure. The crude product which contained
two regioisomers was purified by silica gel chromatography (0-5% MeOH/CHzClz gradient) to
afford 100 mg of desired regioisomer, 217a, as well as 70 mg of the minor regioisomer (5-
hydroxymethyl triazole).
4-Hydr0xymethyl triazole somer 217a: 1H NMR (400 MHZ, CDClg) 5 7.71 (d, J =
2.6 HZ, 1H), 7.19 (s, 1H), 5.31 -5.16 (m, 1H), 4.86 (m, 1H), 4.79-4.60 (m, 2H), 4.44 (m, 1H),
1.07 (s, 9H); LCMS Gradient 10-90%, 0.1% formic acid, 5 minutes, C18/ACN, Retention Time
= 2.26 minutes (M+H) 329.31.
Formation of (S)-(1-(2-((5-fluoro(5-fluorotosyl-1H-pyrrolo [2,3-b]pyridin
yl)pyrimidinyl)amino)-3,3-dimethylbutyl)—1H-1,2,3-triazolyl)methanol (218a)
A solution of 5-fiu0r0(p-tolylsulfonyl)(4,4,5,5-tetramethyl-1,3,2-di0xab0rolan
yl)pyrrolo[2,3-b]pyridine, 7a, (0.158 g, 0.380 mmol), (S)-(1-(2-((2-chlorofiuoropyrimidin
yl)amin0)-3,3-dimethylbutyl)—1H—1,2,3-triaZ01yl)methanol, 217a, (0.100 g, 0.304 mmol) and
K3PO4 (0.520 g, 2.440 mmol) in 2-methyl THF (8 mL) and water (2 mL) was ed under a
stream of nitrogen for 30 minutes. X-Phos (0.008 g, 0.018 mmol) and Pd2(dba)3 (0.006 g, 0.006
mmol) were added and the on mixture was heated at 115 0C in a pressure Vial for 4 hours.
The reaction mixture was cooled to room temperature and filtered. The e was concentrated
in vacuo. The residue was dissolved in EtOAc (50 mL) and washed with water. The organic
layer was dried (MgSO4), filtered concentrated in vacuo. The crude residue was purified Via
silica gel chromatography (0-70% EtOAc/Hexanes gradient) to afford 120 mg of the desired
product as a white foamy solid: 1H NMR (400 MHZ, CDClg) 5 8.37 , 8.33 (s, 1H), 8.21 (s,
1H), 8.03 (d, J: 8.4 HZ, 2H), 7.90 (d, J: 3.0 HZ, 1H), 5.37(m, 1H), 4.92 ? 4.83 (m, 1H), 4.78 -
4.69 (m, 2H), 4.44 (dd, J: 13.9, 11.3 HZ, 1H), 2.32 (s, 3H), 1.11 (s, 9H); LCMS Gradient 60-
98%, 0.1% formic acid, 7 minutes, N, Retention Time = 1.29 minutes (M+H) 583.33
Formation of -(2-((5-fluoro(5-fluoro-lH-pyrrolo[2,3-b]pyridinyl)pyrimidin
yl)amino)—3,3-dimethylbutyl)—1H-1,2,3-triazolyl)methanol (68)
To a solution of (S)-(1-(2-((5-fluoro(5-fluorotosyl-1H—pyrrolo[2,3-b]pyridin
yl)pyrimidinyl)amino)-3,3-dimethylbutyl)-1H-1,2,3-triazolyl)methanol, 2183, (0.11 g, 0.19
mmol) in THF (5 mL) was added NaOMe (0.17 mL of 25% solution in MeOH, 0.75 mmol).
After ng the reaction mixture at room temperature for 30 minutes, the mixture was diluted
into aqueous saturated NH4C1 solution(5 mL) and EtOAc (10 mL). The organic layer was
separated, dried (MgSO4), filtered concentrated in vacuo. The crude product was purified by
silica gel chromatography (0-10% MGOH/CH2C12) to afford 41 mg of the desired product as an
off-white solid: 1H NMR (400 MHz, CDgOD) 5 8.51 (d, J: 8.0 Hz, 1H), 8.16 (s, 1H), 8.09 (s,
1H), 7.93 (d, J: 3.5 Hz, 1H), 7.38 (s, 1H), 5.08 (m, 1H), 5.00-4.90 (m, 1H), 4.74 (s, 2H), 4.60
(m, 1H), 1.2 (s, 9H); LCMS Gradient 10-90%, 0.1% formic acid, 5 s, C18/ACN,
Retention Time = 1.90 minutes (M+H) 429.26.
Examgle 2: Influenza Antiviral Assay
Antiviral assays were performed using two cell-based methods:
A 384-well microtiter plate modification of the standard cytopathic effect (CPE) assay
method was developed, similar to that of Noah, et al. (Antiviral Res. 73:50-60, 2006). Briefly,
MDCK cells were incubated with test compounds and influenza A virus (A/P1V8/3 4), at a low
multiplicity of infection (approximate MOI=0.005), for 72 hours at 37°C, and cell viability was
measured using ATP detection (CellTiter Glo, Promega Inc.). Control wells containing cells and
virus show cell death while wells containing cells, virus, and active antiviral compounds show
cell survival (cell protection). Different trations of test compounds were evaluated, in
quadruplicate, for e, over a range from approximately 20 uM to 1 nM. Dose-response
curves were prepared using standard 4-parameter curve fitting methods, and the concentration of
test compound resulting in 50% cell tion, or cell survival equivalent to 50% of the
uninfected wells, was reported as the ICso.
A second cell-based antiviral assay was developed that depends on the lication of
virus-specific RNA molecules in the infected cells, with RNA levels being directly measured
using the branched-chain DNA (bDNA), hybridization method (Wagaman et al, J. Virol Meth,
105:105-114, 2002). In this assay, cells are initially infected in wells of a 96-well microtiter
plate, the virus is allowed to replicate in the infected cells and spread to additional rounds of
cells, then the cells are lysed and viral RNA t is ed. This assay is stopped earlier
that the CPE assay, usually after 18-36 hours, while all the target cells are still . Viral
RNA is quantitated by ization of well lysates to specific ucleotide probes fixed to
wells of an assay plate, then amplification of the signal by ization with additional probes
linked to a er enzyme, ing to the kit manufacturer’s instructions (Quantigene 1.0,
Panomics, Inc.). Minus-strand viral RNA is measured using probes designed for the consensus
type A hemagglutination gene. l wells containing cells and virus were used to define the
100% viral replication level, and esponse curves for antiviral test compounds were
analyzed using 4-parameter curve fitting methods. The concentration of test compound resulting
in viral RNA levels equal to that of 50% of the control wells were reported as EC50.
Virus and Cell culture methods: Madin-Darby Canine Kidney cells (CCL-34 American
Type Culture Collection) were maintained in Dulbecco’s Modfied Eagle Medium (DMEM)
mented with 2mM L-glutamine, l,000U/ml penicillin, l,000 ug/ml streptomycin, 10 mM
HEPES, and 10% fetal bovine . For the CPE assay, the day before the assay, cells were
suspended by trypsinization and 10,000cells per well were distributed to wells of a 384 well plate
in 50 ul. On the day of the assay, adherent cells were washed with three changes ofDMEM
containing lug/ml TPCK-treated trypsin, without fetal bovine serum. Assays were ted with
the addition of 30 TCID50 of virus and test compound, in medium containing 1 ug/ml TPCK-
d trypsin, in a final volume of 50 ul. Plates were incubated for 72 hours at 37°C in a
humidified, 5% C02 atmosphere. Alternatively, cells were grown in DMEM + fetal bovine
serum as above, but on the day of the assay they were trypsinized, washed 2 times and suspended
in serum-free EX-Cell MDCK cell medium (SAFC Biosciences, Lenexa, KS) and plated into
wells at 20,000 cells per well. These wells were then used for assay after 5 hours of incubation,
t the need for washing.
Influenza virus, strain A/PIVS/34 (tissue culture adapted) was obtained from ATCC (VR—
1469). Low-passage virus stocks were prepared in MDCK cells using standard methods (WHO
Manual on Animal Influenza Diagnosis and Surveillance, 2002), and TCID50 measurements were
performed by testing serial dilutions on MDCK cells in the 384-well CPE assay format, above,
and calculating s using the Karber method.
Mean IC50 values (mean all) for certain specific compounds are summarized in Table l:
A: IC50 (mean all) < 0.3 uM;
B 0.3 uM S IC50 (mean all) 5 3.3 uM;
C ICso (mean all) > 3.3 uM.
Mean EC50 values (mean all) for certain compounds are also summarized in Table l:
A: EC50 (mean all) < 0.3 uM;
B 0.3 uM S EC50 (mean all) 5 3.3uM;
C EC50 (mean all) > 3.3 uM.
Mean EC99 values (mean all) for certain compounds are also summarized in Table l:
—134—
A: EC99 (mean all) < 0.3 uM;
B 0.3 uM S EC99 (mean all) 5 3.3uM;
C EC99 (mean all) > 3.3 uM.
Some exemplary data are as follows: Compound 1: IC50=0.006 uM, EC50=0.009 uM,
EC99=0.0094 uM; Compound 2: IC50=0.004 uM, EC50=0.009 uM, .0063 uM; Compound
6: IC50=0.004 uM, EC50=0.015 uM, EC99=0.082 uM; Compound 69: IC50=2.31 uM, EC50=0.8
uM, EC99=8.4 uM; Compound 76: IC50=0.423 uM, EC50=0.25 uM, EC99=l.4 uM.
For comparison purposes, some nds disclosed in W02005/095400 were also
tested against influenza Virus using the bDNA and MDCK cell protection assays described
above, and their mean ICso, ECso, and EC99 values are ized in Table 2.
Table l: ICso, ECso, NMR and LCMS Data of Compounds of Invention.
bDNA bDNA
Compound LCMS
nos. RT
12.25 (s, 1H): 12.0 (bs, 1H): 8.8 (s,
1H): 8.3 (s, 1H): 8.25 (s, 1H); 8.1 (s,
2 07
1H): 7.45 (d, 1H); 4.75 (t, 1H); 2.5 (m, '
2H), 1.0 (s, 9H).
12.25(s,1H): 12.0 (bs, 1H): 8.6 (d,
1H): 8.3 (s, 1H): 8.2 (s, 1H); 8.15 (s,
1 92
1H): 7.45 (d, 1H); 4.8 (t, 1H); 2.5 (m, '
2H), 1.0 (s, 9H).
2.06
1.93
1H NMR (300 MHz, MeOD) d 8.60 (d,
J = 7.7 Hz, 2H), 8.33 (s, 1H), 5.08 (t, J
= 17.2 Hz, 1H), 2.93 (dd, J = 16.3, 2.8 2.17
Hz, 1H), 2.73 (dd, J =16.3, 10.6 Hz,
1H), 1.08 (s, 9H).
-l35-
1H NMR (400 MHz, CDCI3) d 8.31 (d,
J = 6.4 Hz, 1H), 8.06 (s, 1H), 7.06 (t, J
6 A = 9.7 Hz, 1H), 4.58 (s, 2H), 2.80 (d, J 394.19 2.92
= 13.2 Hz, 1H), 2.29 (dd, J = 13.3, 8.7
Hz,1H),098(s,9H)
1H NMR (300 MHz, MeOD) ? 8.86
(dd, J = 9.8, 2.8 Hz, 1H), 8.37 (s, 1H),
8.26 - 8.14 (m, 1H), 7.53 (d, J = 11.0
7 A Hz, 1H), 5.04 (dd, J = 11.0, 2.9 Hz, 2.99
1H), 2.81 (dd, J = 15.4, 3.0 Hz,1H),
2.60 (dd, J =15.4,11.0 Hz, 1H), 0.99
(diastereomer
A ZJ
ofCompound
9 A 2.04
1H NMR (400 MHz, MeOD) ? 8.60 (s,
1H), 8.44 (s, 1H), 8.23 (d, J = 5.3 Hz,
1° A 2'02
1H), 8.16 (s, 1H), 5.15 (m, 1H), 3.39
(d, J: 8 Hz, 2H), 1.08(s 9H).
1H NMR (400 MHz, MeOD) ? 8.44 (s,
1H), 8.34 (dd, J = 9.2, 2.6 Hz, 1H),
11 A 8.22 (d,J=5.7 Hz, 1H), 8.13(s, 1H), 1.91
.16 (d, J = 4.1 Hz, 1H), 3.46 - 3.33
m, 3H 1.10
, d, J = 19.9 Hz, 10H.
1H NMR (400 MHz, MeOD) ? 8.64
(dd, J = 8.4, 2.4 Hz, 1H), 8.57 (s, 1H),
8.24 (d, J = 4.4 Hz, 1H), 5.19 (d, J =
12 A 8.7 Hz, 1H), 2.78 (qd, J = 15.9, 6.6 2.37
Hz, 2H), 1.85 - 1.57 (m, 6H), 1.48 (dd,
J = 11.8, 6.0 Hz, 1H), 1.36 (dt, J =
)Hz,1H),111(s,3H)
1H NMR (400 MHz, MeOD) ? 8.64
(dd, J = 8.4, 2.4 Hz, 1H), 8.57 (s, 1H),
8.24 (d, J = 4.4 Hz, 1H), 5.19 (d, J =
13 A 8.7 Hz, 1H), 2.78 (qd, J =15.9,6.6 3.21
Hz, 2H), 1.85 - 1.57 (m, 6H), 1.48 (dd,
J =11.8,6.0 Hz,1H),1.36(dt,J =
12.0, 6.0 Hz, 1H 1.11
, s, 3H.
(diastereomer
B 402.38 2.12
ofCompound
16 A 390.35 2.03
WO 19828
17 B B C 389.97 2.03
1H NMR (400 MHz, DMSO) ? 12.37
(s, 1H), 12.12 (s, 1H), 8.75 (d, J = 9.9
Hz, 1H), 8.32 (s, 2H), 7.83 (d, J =
11.4 Hz, 1H), 7.48 (d,J=9.5 Hz, 1H), 3.14
.00 (t, J = 9.1 Hz, 1H), 2.71 - 2.54
(m, 2H), 1.30 (d, J = 7.4 Hz, 2H), 0.80
(t, J = 18.7 Hz, 9H).
1H NMR (400 MHz, CDCI3) ? 9.75 (s,
1H), 8.12 (d, J = 9.3 Hz, 1H), 7.94
(s,1H), 7.73 (s, 2H), 7.87 (brs, 1H), 1.98
4.93 - 4.78 (m, 2H), 3.08 (m, 1H),
2.78 (s, 3H), 0.99 (m, 9H).
1H NMR (400 MHz, DMSO) ? 12.23
(s, 1H), 11.93 (s, 1H), 8.48 (d, J = 9.9
Hz, 1H), 8.33 - 8.07 (m, 3H), 7.18 (d,
J = 9.3 Hz, 1H), 4.39 (t, J = 10.2 Hz, 2.14
1H), 2.38 - 2.07 (m, 2H), 1.99 - 1.92
(m, 1H), 1.80- 1.84 (m, 1H), 1.00 (d,
J = 20.2 Hz, 9H).
1H NMR (400 MHz, MeOD) ? 8.68
(dd, J = 9.8, 2.5 Hz, 1H), 8.24 - 8.11
(m, 2H), 8.03 (d, J = 3.8 Hz, 1H), 5.12
(d, J = 8.5 Hz, 1H), 3.48 (d, J = 9.2
Hz, 2H), 2.80 - 2.47 (m, 1H), 0.88 -
1H NMR (400 MHz, MeOD) ? 8.85 (d,
J = 9.3,1H), 8.47 (s, 1H), 8.34 (m,
2H), 5.28 (d, J = 10.4 Hz, 1H), 3.55 1.98
(dt, J = 14.5, 13.0 Hz, 2H), 1.20 - 1.03
(m, 9H).
1H NMR (400 MHz, DMSO) ? 12.23
(s, 1H), 8.44 (d, J = 7.8 Hz, 1H), 8.32
- 8.08 (m, 3H), 7.18 (d, J = 9.8 Hz,
1H), 4.38 (t, J =10.4 Hz, 1H), 4.00 - 2.41
3.87 (m, 2H), 2.41 - 2.13 (m, 2H),
2.08- 1.93 (m, 1H), 1.87 - 1.85 (m,
1H 1.08 -0.84
, m, 12H.
1H NMR (400 MHz, CDCI3) ? 10.27
(brs, 1H), 8.25 (d, J = 9.4 Hz, 1H),
8.17 (s, 1H), 8.11 (s, 1H), 7.23 (d, J =
.3 Hz, 1H), 5.20 (d, J = 9.8 Hz, 1H), 3.08
4.41 (t, J = 7.4 Hz, 1H), 4.09 (d, J =
11.3 Hz, 1H), 3.82 - 3.58 (m, 1H),
0.99 (d, J = 19.5 Hz, 9H).
1H NMR (400 MHz, MeOD) ? 9.26
(dd, J = 9.0, 2.2 Hz, 1H), 8.43 (s, 1H),
A A A 8.22 (s, 1H), 7.66 - 7.35 (m, 1H), 5.00 436 2.54
(m, 1H), 3.45 - 3.17 (m, 2H), 1.03(m,
9H).
1H NMR (400 MHz, CDCI3) ? 9.68 (s,
1H), 6.45 - 8.33 (m, 1H), 6.17 (d, J =
2.8 Hz, 1H), 7.66 (s, 1H), 7.36 (d, J =
.3 Hz, 1H), 6.47 (d, J = 4.9 Hz, 1H),
2.97
.11 (d, J = 7.6 Hz, 1H), 4.90 (d, J =
.4 Hz, 1H), 3.52 (s, 1H), 3.04 (dd, J
= 15.0, 10.5 Hz, 1H), 2.67 (d, J = 5.0
Hz, 3H 1.02
, s, 9H.
1H NMR (400 MHz, CDCI3) ? 8.59
(dd, J = 9.7, 2.6 Hz, 1H), 8.38 (s, 1H),
8.21 (s, 1H), 7.31 (m, 1H), 5.12 (brs, 3.12
1H), 4.97 (brs, 1H), 3.33 (m, 1H), 2.70
(s, 6H), 0.95 (m, 9H).
3.12
1H NMR (400 MHz, MeOD) ? 6.71
(dd, J = 9.7, 2.6 Hz, 1H), 8.37 (s, 1H),
8.20 (s, 1H), 7.57 (d, J = 10.9 Hz,
3 05
1H), 5.08 (d, J = 6.6 Hz, 1H), 3.54 - '
3.40 (m, 2H), 3.32 (m, 5H), 3.15 (t, J
= 5.4 Hz, 2H).1.03 (s,9H)
3.27
1H NMR (400 MHz, CDCI3) ? 10.77
(brs, 1H), 8.25 (d, J = 6.4 Hz, 1H),
8.07 , 8.03 (s,1H), 7.88 (s, 1H),
1 83
.59 (brs, 1H), 4.36 (t, J = 8.3 Hz,
2H), 4.11 (m, 1H), 3.72 (m, 2H), 1.06
(s, 9H).
WO 19828
1H NMR (400 MHz, CDCI3) ? 9.89
(brs, 1H), 8.07 (d, J = 9.3 Hz, 1H),
7.89 (s, 1H), 7.66 (m, 2H), 4.95 (t, J =
33 A A A 10.2 Hz, 1H), 4.80 (d, J = 9.6 Hz, 1H), 439.3 2.25
3.38 (m, 3.18- 2.96 (m, 3H),1
, 1H),
1.35- 1.12 (m, 3H), 1.08- 0.90 (m,
9H .
.1H NMR (400 MHz, CDCI3) ? 9.84
(s, 1H), 8.10 (d, J = 9.5 Hz, 1H), 7.92
(d, J = 1.2 Hz, 1H), 7.72 (d, J = 14.2
34 A Hz, 2H), 4.92 (m, 1H), 4.81 (m, 1H), 453.44 2.42
3.41 (d, J = 15.0 Hz, 1H), 3.19 -2.84
(m, 3H), 1.59 - 1.38 (m, 3H), 0.98 (s,
9H), 0.84 (t, J = 7.4 Hz, 3H).
A 469.18 2.11
36 B 390.29 1.98
1H NMR (300 MHz, d6-DMSO) ?
12.21 (s, 1H), 8.52 (dd, J = 9.9, 2.9
Hz, 1H), 8.30 - 8.23 (m, J = 2.8, 1.5
Hz, 1H), 8.20 (d, J = 2.6 Hz, 1H), 8.12
(d,J=4.1 Hz, 1H), 7.07 (d,J=8.9
37 c
Hz, 1H), 4.53 (t, J = 5.4 Hz, 1H), 4.44
- 4.27 (m, J = 9.1, 5.8 Hz, 1H), 3.77
(ddd, J 11.0, 5.1, 3.5 Hz, 1H), 3.59
(ddd, J 11.1, 8.9, 5.8 Hz, 1H), 0.99
s, 9H .
1H NMR (300 MHz, d6-DMSO) ?
12.21 (s, 1H), 8.55 (dd, J = 10.0, 2.8
Hz, 1H), 8.29 - 8.23 (m, 1H), 8.19 (d,
J = 2.7 Hz, 1H), 8.15 (d, J = 4.0 Hz,
38 C C 1H), 7.47 (d, J = 8.4 Hz, 1H), 6.77 - 425.03 2.11
6.69 (m, 1H), 4.88 (t, J = 9.1 Hz, 1H),
3.49 - 3.36 (m, 1H), 3.36 - 3.28 (m, J
= 10.5 Hz, 1H), 2.55 (t, J = 5.6 Hz,
1H NMR (400 MHz, CDCI3) ? 9.89 (s,
1H), 8.07 (d, J = 8.9 Hz, 1H), 7.90 (s,
1H), 7.68 (s, 2H), 4.96 (t, J = 9.8 Hz,
39 A A B 1H), 4.76 (d, J = 9.8 Hz, 1H), 3.60 453.19 2.22
(dd, J = 13.0, 6.6 Hz, 1H), 3.42 (m,
1H), 3.09 - 2.86 (m, 1H), 1.20 (d, J =
4.9 Hz, 6H), 0.97 (s, 9H).
40 A A B 467.2 2.36
41 386.39 3.09
1 H NMR (300 MHz, CDCI3) ? 10.70
(s, 1H), 8.42 (dd, J = 9.6, 2.6 Hz, 1H),
8.05 (s, 1H), 7.73 (s, 1H), 7.40 (t, J =
8.4 Hz, 1H), 5.32 (d, J = 6.6 Hz, 1H),
42 426.31 3.27
4.63 (t, J = 9.4 Hz, 1H), 2.69 (d, J =
.3 Hz, 1H), 2.34 (dd, J = 12.6, 9.6
Hz, 1H), 1.92 - 1.37 (m, 6H), 1.32 -
1.24 m,1H,1.20-1.06 m,3H.
1H NMR (300 MHz, CDCI3) ? 11.16
(s, 1H), 6.70 (s, 1H), 6.04 (d, J = 3.2
Hz, 1H), 7.96 (s, 1H), 7.67 (s, 1H),
43 426.47 2.49
.02 (d, J = 6.1 Hz, 1H), 4.60 (t, J =
9.6 Hz, 1H), 2.61 (d, J = 9.9 Hz, 1H),
2.34 (t, J = 11.3 Hz, 1H), 1.14 (s, 9H).
1H NMR (400 MHz, DMSO) ? 12.26
(s, 2H), 8.55 (d, J = 9.7 Hz, 1H), 6.19
(dd, J = 8 Hz, 3H), 7.48 (d, J
44 374.02 2.1
= 6.1 Hz, 1H), 4.79 (s, 1H), 2.58 (dd,
J = 206,122 Hz, 2H), 1.65 (ddd, J =
29.4, 26.5, 21.1 Hz, 7H).
1H NMR (300 MHz, CDCI3) ? 10.42
(s, 1H), 8.47 (dd, J = 9.3, 2.7 Hz, 1H),
6.13 (d, J = 11.2 Hz, 1H), 6.10 (s,
1H), 6.04 (d, J = 3.2 Hz, 1H), 4.69 (d,
J = 9.0 Hz, 1H), 4.26 (t, J = 9.9 Hz,
45 362.39 1.89
1H), 3.65 (d, J = 9.2 Hz, 1H), 3.54 (td,
J = 11.4, 2.9 Hz, 1H), 2.17- 1.99 (m,
1H), 1.40 (dd, J =14.0, 11.9 Hz, 1H),
0.96 (d, J = 18.4 Hz, 9H), 0.90 - 0.73
1H NMR (400 MHz, CDCI3) ? 9.38 (s,
1H), 8.53 (d, J = 6.9 Hz, 1H), 8.16 (m,
46 2H), 8.06 (s, 1H), 5.09 - 4.89 (m, 1H), 410.19 2.03
3.42 - 3.31 (m, 1H), 3.11 (m, 1H),
2.84 (s, 3H), 1.00 (s, 9H).
1H NMR (400 MHz, MeOD) ? 8.70
(dd, J = 8.9, 2.3 Hz, 1H), 8.50 (s, 1H),
8.35 (s, 1H), 7.99 (d, J = 7.3 Hz, 1H),
47 6.60 (d, J = 7.2 Hz, 1H), 5.05 (d, J = 358.02 2.17
.7 Hz, 1H), 2.93 (dd, J =15.9, 1.8
Hz, 1H), 2.53 (dd, J =15.9, 11.2 Hz,
1H), 1.08 (d, J = 0.8 Hz, 9H)
—140—
1H NMR (400 MHz, MeOD) ? 8.63 -
8.45 (m, 2H), 7.96 (d, J = 7.3 Hz, 2H),
6.66 (d, J = 7.3 Hz, 2H), 4.95 (d, J =
48 35902 2'12
.6 Hz, 2H), 2.84 (dd, J = 15.4, 2.4
Hz, 2H), 2.44 (dd, J = 15.9, 10.7 Hz,
2H), 0.98 (s, 9H).
1H NMR (300 MHz, MeOD) ? 8.73 (t,
J = 5.0 Hz, 1H), 8.44 (s, 1H), 8.37 -
8.22 (m, 2H), 4.69 (dd, J = 9.9, 2.9
49 Hz, 1H), 4.11 (dd, J = 11.5, 3.1 Hz, 364.44 2.1
1H), 3.83 (dd, J =11.4, 10.0 Hz,1H),
3.32 (dt, J = 3316 Hz, 1H), 1.12 (s,
9H).
(diastereomer
of 402.45 1.98
Compounds
51 and 52)
ereomer
of 2.06
Compounds
50 and 52)
(diastereomer
of 2.16
Compounds
50 and 51)
1H NMR (400 MHz, DMSO) ? 12.57
(s, 1H), 9.40 (s, 1H), 8.88 (s, 1H),
53 8.40 (d, J = 18.7 Hz, 2H), 8.34 (s, 2.5
1H), 3.93 (s, 1H), 3.52 (s, 1H), 1.20
(s, 9H).
1H NMR (400 MHz, DMSO) ? 12.65
(s, 1H), 12.41 (s, 1H), 9.28 (s, 1H),
54 8.86 (s, 1H), 8.65 (s, 1H), 8.30 (d, J = 2.92
3.5 Hz, 2H), 3.97 - 3.70 (m, 1H), 3.51
(s, 1H), 1.18 (s, 9H)
55 400.46 1.94
—141—
WO 19828
1 H NMR (400 MHz, DMSO) ? 12.65
(s, 1H), 9.43 (s, 1H), 9.15 (s, 1H),
56 8.44 (d, J = 4.7 Hz, 1H), 8.41 - 8.29 393.32 2.7
(m, 2H), 3.93 (s, 1H), 3.54 (s, 1H),
1.19 (d, J = 20.0 Hz, 9H).
1H NMR (400 MHz, CDCI3) ? 8.05 (d,
J = 7.9 Hz, 1H), 7.81 (d, J = 2.1 Hz,
1H), 7.63 (s, 1H), 7.55 (s, 1H), 5.87 (t,
57 J = 54.9 Hz, 1H), 5.03 (t, J = 10.4 Hz, 475.23 2.26
1H), 4.86 (m, 1H), 3.68 (brs, 1H),
3.43 (m, 2H), 3.19 (m, 1H), 0.94 (s,
9H).
1H NMR (400 MHz, CDCI3) ? 8.03
(dd, J = 9.3, 2.4 Hz, 1H), 7.82 (t, J =
11.2 Hz, 1H), 7.59 (s, 1H), 7.46 (s,
58 493.31 2.37
1H), 5.07 (t, J = 10.6 Hz, 1H), 4.77
(m, 1H), 3.45 (m, 1H), 3.16 -2.99 (m,
1H), 0.97 - 0.86 (m, 9H).
1H NMR (300 MHz, MeOD) ? 8.54 (s,
1H), 8.50 - 8.18 (m, 3H), 7.18 (dd, J =
59 15.7, 7.1 Hz, 1H), 6.08 (dd, J = 15.7, 2.21
1.3 Hz, 1H), 5.21 (t, J = 22.5 Hz, 1H),
1.12 (s, 9H).
60 2.01
1H NMR (300 MHz, MeOD) ? 8.95 (s,
1H), 8.29 - 8.14 (m, 2H), 8.08 (d, J =
4.0 Hz, 1H), 5.26 (m, 1H), 4.21 (d, J =
61 2.23
.3 Hz, 1H), 3.92 (dd, J = 300,145
Hz, 2H), 3.77 - 3.57 (m, 1H), 1.10 (s,
9H).
62 416.04 2.15
63 389.06 2.08
—142—
1H NMR (400 MHz, MeOD) ? 8.60 -
8.52 (m, 1H), 8.46 (s, 1H), 8.32 (d, J =
.3 Hz, 2H), 5.16 (m, 2H), 4.00 (d, J =
64 438.25 1.93
14.7 Hz, 1H), 3.80 (d, J =14.7 Hz,
1H), 3.59(d, J = 13.9, 1H), 1.12 (s,
9H).
65 416.07 2.11
1H NMR (400 MHz, CDCI3) ? 10.15
(s, 1H), 8.49 (dd, J = 9.3, 2.6 Hz, 1H),
66 8.16 (s, 1H), 8.10 (d, J = 2.6 Hz, 1H),
(diastereomer 8.06 (d, J = 3.0 Hz, 1H), 5.30 (d, J =
A 430.47 2.37
of Compound 15.0 Hz, 1H), 5.19 -5.10 (m, 1H),
67) 4.32 - 4.24 (m, 1H), 4.23 - 4.17 (m,
1H), 2.37 (dt, J = 14.9, 3.4 Hz, 1H),
1.85-1.71 m,2H,1.09 s,9H.
1H NMR (400 MHz, CDCI3) ? 9.40 (s,
1H), 8.47 (dd, J = 9.3, 2.7 Hz, 1H),
67 8.15 (s, 1H), 8.10 (d, J = 2.7 Hz, 1H),
(diastereomer 7.99 (d, J = 2.8 Hz, 1H), 5.54 (s, 1H),
A 430.44 2.42
of Compou nd 4.84 (d, J = 7.5 Hz, 1H), 4.23 (t, J =
66) 9.9 Hz, 1H), 3.91 (s, 1H), 2.07 - 1.97
(m, 1H), 1.62 (t, J = 13.0 Hz, 1H),
1.01 (s, 9H).
1H NMR (400 MHz, MeOD) ? 8.51 (d,
J = 8.0 Hz, 1H), 8.16 (s, 1H), 8.09 (s,
1H), 7.93 (d, J = 3.5 Hz, 1H), 7.38 (s,
68 429.26 1.9
1H), 5.08 (m, 1H), 5.00 - 4.90 (m, 1H),
4.74 (s, 2H), 4.60 (m, 1H), 1.2 (s,
9H).
1H NMR (300 MHz, MeOD) ? 8.59 -
8.39 (m, 2H), 8.32 (t, J = 5.3 Hz, 2H),
69 4.59 (d, J = 9.5 Hz, 2H), 2.21 (s,1H), 426.09 1.81
1.79 (dddd, J = 28.6, 23.0, 13.2, 6.9
Hz, 3H), 1.11 (d, J = 9.5 Hz, 9H).
1H NMR (400 MHz, DMSO) ? 8.61
(dd, J = 9.9, 2.6 Hz, 1H), 8.26 (s, 1H),
70 8.18 (s, 1H), 8.11 (d, J = 4.1 Hz, 1H),
ereomer 4.66 (d, J = 10.4 Hz, 1H), 4.43 (s,
A 392.46 1.76
of Compound 1H), 4.29 (d, J = 4.1 Hz, 1H), 4.04 (s,
71) 1H), 3.35 (s, 1H), 3.26 (d, J = 6.1 Hz,
2H), 1.69 (t, J = 12.3 Hz, 1H), 1.59 -
1.45 (m, 1H), 0.96 (s, 9H).
—143—
1H NMR (400 MHz, MeOD) ? 8.61
(dd, J = 9.6, 2.7 Hz, 1H), 8.17 (s, 2H),
8.01 (d, J = 4.1 Hz, 1H), 4.53 (d, J =
(diastereomer
.0 Hz, 1H), 3.75 - 3.56 (m, 2H), 392.46 1.79
of Compound
3.48 (dd, J = 11.0, 6.3 Hz, 1H), 2.08 -
1.97 (m, 1H), 1.75 (dt, J = 26.7, 9.4
Hz, 1H), 1.04 (s, 9H).
1H NMR (400 MHz, CDCI3) ? 9.99 (s,
1H), 8.60 (dd, J = 9.4, 2.7 Hz, 1H),
6.26 (s, 1H), 6.20 (d, J = 2.6 Hz, 1H),
72 6.10 (d, J = 3.2 Hz, 1H), 5.06 (t, J =
(diastereomer 12.3 Hz, 1H), 4.28 (dd, J = 9.6, 7.2
1.93
of nd Hz, 1H), 3.96 (d, J = 5.7 Hz, 1H), 2.71
73) (s, 1H), 1.97 (ddd, J = 14.2, 5.8, 2.9
Hz, 1H), 1.66 ? 1.58 (m, 1H), 1.28
(dd, J = 6.5, 5.5 Hz, 4H), 1.04 (d, J =
.1 Hz, 9H .
1H NMR (400 MHz, CDCI3) ? 10.81
(s, 1H), 8.47 (dd, J = 9.3, 2.7 Hz, 1H),
73 6.14 (s, 1H), 8.05 (dd, J = 6.4, 2.9 Hz,
(diastereomer 2H), 4.95 (s, 1H), 4.61 (d, J = 8.3 Hz,
2.01
of Compound 1H), 4.31 ? 4.14 (m, 1H), 3.72 (dd, J =
72) 8.9, 6.0 Hz, 1H), 1.63 ? 1.70 (m, 1H),
1.46 ? 1.32 (m, 1H), 1.24 ?1.11 (m,
4H), 0.98 (s, 9H).
1H NMR (300 MHZ, MeOD) ? 8.59
(dd, J = 9.6, 2.9 Hz, 1H), 8.15 (d, J =
2.7 Hz, 2H), 8.01 (d, J = 4.1 Hz, 1H),
4.60 (dd, J = 6.3, 6.0 Hz, 1H), 2.90 -
74 1.94
2.68 (m, 2H), 1.17 (s, 3H), 0.85 (dt, J
= 9.7, 6.7 Hz, 1H), 0.64 (dt, J = 9.4,
4.9 Hz, 1H), 0.47 - 0.33 (m, 1H), 0.27
(ddd, J = 21.3,12.8,10.1Hz,1H).
75 2.55
1H NMR (300 MHZ, MeOD) ? 8.70
(dd, J = 9.7, 2.8 Hz, 1H), 8.15 (dd, J =
6.1, 4.0 Hz, 2H), 8.02 (d, J = 4.1 Hz,
1H), 5.23 (dd, J = 10.7, 3.1 Hz,1H),
76 4.30 (d, J = 47.9 Hz, 2H), 3.63 (d, J = 1.87
18.2 Hz, 1H), 3.31 (dt, J = 33,16 Hz,
3H), 2.83 (dd, J = 15.3, 3.3 Hz,1H),
2.63 (dd, J =15.3, 10.8 Hz,1H), 1.07
—144—
2012/049097
1H NMR (400 MHz, CDCI3) ? 9.55 (s,
1H), 8.58 (dd, J = 9.3, 2.5 Hz, 1H),
8.18 (s, 2H), 8.00 (d, J = 2.7 Hz, 1H),
77 5.13 (brs, 1H), 4.95 (t, J = 8.2 Hz, 444.36 2.77
1H), 3.84 (m, 2H), 2.72 (m, 1H), 2.38
(m, 1H), 1.87 - 1.15 (m, 10H), 0.94
(m, 3H).
1H NMR (400 MHz, MeOD) ? 8.78
(dd, J = 9.7, 2.7 Hz, 1H), 8.18 (s, 2H),
7.99 (d, J = 4.1 Hz, 1H), 5.20 (d, J =
78 A 9.9 Hz, 1H), 2.88 - 2.89 (m, 1H), 2.53 416.27 2.2
(dd, J =14.7, 11.0 Hz, 1H), 1.78 -
1.58 (m, 2H), 1.53 (m, 4H), 1.29 (m,
4H), 1.02 (s, 3H).
H NMR (300.0 MHz, MeOD) d 8.66
(d, J = 8.9 Hz, H), 8.29 (s, H), 8.22 -
8.18 (m, H), 5.49 (s, H), 4.16 - 4.06
79 (m, H), 2.97 (s, H), 2.92 (s, H), 2.86 - 430.41 2.22
2.78 (m, H), 2.45 (s, H), 2.06 (s, H),
1.93 (s, H), 1.80 (s, H) and 1.27 - 1.21
m, 6 H ppm
1H NMR (400 MHz, CDCI3) ? 8.88
(dd, J = 9.2, 2.8 Hz, 1H), 8.53 (d, J =
9.6 Hz, 2H), 8.43 (s, 1H), 8.38 (s, 1H),
80 406.09 2.41
.27 - 5.13 (m, 1H), 3.80 (s, 3H), 3.02
- 2.87 (m, 2H), 1.94 (s, 1H), 1.08 (s,
9H).
1H NMR (300 MHz, CDCI3) ? 9.83 (s,
1H), 8.58 (dd, J = 9.3, 2.7 Hz, 1H),
8.37 (s, 1H), 8.25 (s, 1H), 8.13 (d, J =
3.3 Hz, 1H), 5.88 (s, 1H), 5.32 - 5.18
81 440.45 2.35
(m, 1H), 4.71 - 4.32 (m, 4H), 4.04 (q,
J = 7.1 Hz, 2H), 2.94 - 2.77 (m, 1H),
2.70 (dd, J = 15.1, 9.1 Hz, 1H), 1.28
,1.08- 1.04 t, J = 7.1Hz,3 H.
1H NMR (400 MHz, CDCI3) ? 9.93 (s,
1H), 8.89 (d, J = 2.1 Hz, 1H), 8.24 (d,
J: 2.4 Hz, 1H), 8.18 (s, 1H), 8.00 (d,
J = 3.4 Hz, 1H), 5.19 (m, 1H), 4.98
82 460.29 3.08
(m, 1H), 3.98 - 3.85 (m, 2H), 2.73
(dd, J = 14.3, 3.8 Hz, 1H), 2.38 (m,
1H), 1.89 - 1.23 (m, 10H), 0.93 (t, J =
1H NMR (400 MHz, MeOD) ? 9.05 (d,
J = 2.1 Hz, 1H), 8.39 - 8.24 (m, 2H),
8.18 (d, J = 4.9 Hz, 1H), 5.23 (d, J =
83 432.36 2.37
.4 Hz, 1H), 2.88 (d, J = 15.8 Hz,
1H), 2.85 (m, 1H), 1.58 (m, , 7H),
1.37 (m, 3H), 1.05 (s, 3H).
—145—
WO 19828
1H NMR (300 MHz, MeOD) ? 8.67
(dd, J = 9.6, 2.8 Hz, 1H), 8.16 (m,
2H), 6.04 (d, J = 4.0 Hz, 1H), 5.36
84 (dd, J = 10.6, 3.2 Hz, 1H), 4.72 - 4.23 412.43 1.9
(m, 4H), 2.86 (dd, J = 15.5, 3.3 Hz,
1H), 2.70 (dd, J =15.5, 10.9 Hz, 1H),
1.15 s, 3H .
1H NMR (400 MHz, MeOD) ? 8.68
(dd, J = 9.3, 2.7 Hz, 1H), 8.47 (s, 1H),
85 8.38 (s, 1H), 8.32 (s, 1H), 5.17 (dd, J 392.1 2.23
= 9.6, 3.5 Hz, 1H), 2.87 (m, 2H), 1.06
(s, 9H).
1H NMR (400 MHz, MeOD) ? 6.75
(dd, J = 9.7, 2.7 Hz, 1H), 6.16 (s, 2H),
8.00 (d, J = 4.2 Hz, 1H), 2.81 (dd, J =
86 45434 2'4
.2, 3.1 Hz, 1H), 2.55 (dd, J = 15.2,
.8 Hz, 1H), 2.00 (m, 3H), 1.62 -
1.49 (m, 12H).
87 389.13 2.02
88 388.36 2.01
89 383.38 2.1
1H NMR (300 MHz, DMSO) ? 8.68 (s,
1H), 8.43 (d, J = 14.1 Hz, 2H), 8.23
9° 3725 1'8
(3, 1H), 4.96 (s, 2H), 2.88 - 2.55 (m,
4H), 2.45 (s, 3H), 1.00 (s, 9H).
91 374.42 1.96
92 B B C 374.42 1.94
2.37
1H NMR (400 MHz, MeOD) ? 9.02 (d,
J = 2.3 Hz, 1H), 8.40 - 8.24 (m, 2H),
8.18 (d, J = 5.0 Hz, 1H), 4.91 (d, J =
11.8 Hz, 1H), 2.88 (dd, J = 18.0, 2.8 2.8
Hz, 1H), 2.85 (dd, J =15.9, 11.0 Hz,
1H), 2.01 (s, 3H), 1.77 (dd, J = 27.9,
11.9 Hz, 12H .
1H NMR (400 MHz, MeOD) ? 8.82
(dd, J = 9.3, 2.8 Hz, 1H), 8.48 (t, J =
.4 Hz, 1H), 8.32 (s, 1H), 8.29 (d, J =
2'12
.5 Hz, 1H), 5.42 (dd, J = 10.0, 3.4
Hz, 1H), 2.84 (m, 2H), 2.18 (s, 1H),
1.85 (m, 4H), 1.39 (m, 8H).
2.79
1H NMR (300 MHz, MeOD) 6 8.95 (d,
J = 2.3 Hz, 1H), 8.66 (d, J = 2.3 Hz,
1H), 8.35 (d, J = 5.2 Hz, 1H), 5.12
(dd, J: 10.7, 2.9 Hz, 1H), 2.93 (dd, J
= 16.5, 2.9 Hz, 1H), 2.73 (dd, J: 2.5
164,107 Hz, 1H), 1.10 (s, 9H);
LCMS Gradient 10-90%, 0.1% formic
acid, 5 minutes, C18/ACN, Retention
Time = 2.79 min, M+H 407.37
Table 2: ICso, ECso, NMR and LCMS Data of nds of W02005/095400
MDCKceII bDNA bDNA
Compounds
IC50(uM) EC50(uM) EC99(uM)
—147—
C1 CkTfi‘K\ N H' >20 ((3)
l |
C3 _} >20 (C) 3.38 (C) 9.37 (C)
C4 2.33 (B) 6.4 (C) >137 (C)
Example 3: In Vivo Assay
For efficacy studies, Balb/c mice (4-5 weeks of age) were challenged with 5x103
TCID50 in a total volume of 50 ul by intranasal by intranasal instillation (25 ul/nostril) under
general anesthesia (Ketamine/Xylazine). Uninfected controls were nged with tissue
e media (DMEM, 50 ul total volume). 48 hours post infection mice began treatment with
Compounds 1 and 2 at 30 mg/kg bid for 10 days. Body weights and survival is scored daily for
21 days. In addition, Whole Body Plethysmography is conducted approximately every third day
following challenge and is reported as enhanced pause (Penh). Total Survival, Percent Body
Weight Loss on post challenge day 8 and Penh on study day 6/7 are ed.
Table 3. Influneza Therapeutic Mouse Model (Dosing @ 48 hours post infection with 30 mg/kg
BID X 10 days)
Compounds t Survival Percent Weight Loss WBP (Penh; Day 6)2
(Day 8)1
1 100 26.6 1.88
Average weight loss for untreated controls on day 8 is 30-32%.
Average Penh scores for untreated controls on study day 6 or 7 is 2.2-2.5, and for uninfected
mice is ~0.35-0.45.
e 4: Synergystic/Antagonism Analyses
For synergy/antagonism analysis, test compounds were evaluated in a three day
MDCK cell CPE-based assay, infected with to Rico/8/34 at an MOI of 0.01, in
combination ments with either the neuraminidase tors oseltamivir carboxylate or
zanamivir, or the polymerase inhibitor T-705 (see, e.g., Ruruta et al., Antiviral Reasearch, 82:
95-102 (2009), “T-705 (flavipiravir) and related compounds: Novel broad-spectrum inhibitors of
RNA viral infections”), using the Bliss independence method (Macsynergy, Pritchard and
Shipman, 1990). See, e.g., Prichard, MN. and C. Shipman, Jr., A three-dimensional model to
e drag-drag interactions. Antiviral Res, 1990. 14(4-5): p. 181-205. This rd method
involves testing different concentration combinations of tors in a checkerboard fashion and
a synergy volume is calculated by comparing the observed response surface with the expected
result calculated from simple additivity of the single agents alone. Synergy volumes greater than
100 are considered strong synergy and volumes between 50 and 100 are considered te
synergy. Synergy volumes of zero represent vity and negative synergy volumes represent
antagonism n the agents.
Table 4. S ner /Anta onism Data
Combination experiments using the Bliss Independence (Macsynergy) Method
Bliss Independence Synergy Volume, Result
95% Confidence
Compound 1 + oseltamivir 360 strong synergy
Compound 1 + favipiravir 1221 strong synergy
Compound 1 +zanamivir 231 strong synergy
Compound 2 + oseltamivir 250 strong synergy
—149—
Compound 2 + favipiravir 100 synergy
Compound 2 + zanamivir 220 strong synergy
Compound 14 + oseltamivir 545 strong synergy
nd 14 + favipiravir 349 strong synergy
Compound 14 +zanamivir 255 strong synergy
Compound 57 + oseltamivir 268 strong synergy
Compound 57 + favipiravir 430 strong synergy
Compound 57 + zanamivir 171 strong synergy
Compound 87 + oseltamivir 348 strong synergy
Compound 87 + favipiravir 412 strong synergy
Compound 87 + zanamivir 2.7 insignificant
All references provided herein are incorporated herein in its entirety by reference.
As used herein, all abbreviations, symbols and conventions are consistent with those used in the
contemporary scientific ture. See, e. g., Janet S. Dodd, ed., The ACS Style Guide: A Manual
for Authors and Editors, 2nd Ed., Washington, DC: American al Society, 1997.
It is to be understood that while the invention has been described in conjunction
with the ed ption thereof, the foregoing description is intended to illustrate and not
limit the scope of the invention, which is defined by the scope of the ed claims. Other
aspects, advantages, and ations are within the scope of the following claims.
Claims (46)
1. A compound of Formula (IV): X2 R4 H R5 Z2 N R1 R3 X1 Z1 NH (IV) or a pharmaceutically acceptable salt thereof, wherein: X1 is –F, –Cl, –CF3, –CN, or –CH3; X2 is –H, –F, or –Cl; Z1 is N or CH; Z2 is N or CR0; R0 is –H, –F, or –CN; R1, R2, and R3 are each independently –CH3, –CH2F, –CF3, –C2H5, –CH2CH2F, or –CH2CF3; R4 and R5 are each independently –H; Q is R; and R is –H or C1-4 alkyl; provided that the compound of Formula (IV) is not compound (2) or a pharmaceutically acceptable salt f.
2. A compound of Formula (V): or a pharmaceutically acceptable salt thereof, wherein: X1 is –F, –Cl, –CF3, –CN, or –CH3; X2 is –H, –F, or –Cl; Z1 is N or CH; Z2 is N or CR0; R0 is –H, –F, or –CN; R1, R2, and R3 are each independently –CH3, –CH2F, –CF3, –C2H5, –CH2CH2F, or –CH2CF3; R4 and R5 are each independently –H; Q is –C(O)OR; and R is –H or C1-4 alkyl; provided that the compound of Formula (V) is not nd (2) or a pharmaceutically acceptable salt f.
3. The compound of any one of claims 1 or 2, wherein X1 is –F or –Cl.
4. The compound of any one of claims 1 or 2, wherein X2 is –F or –Cl.
5. The compound of any one of claims 1 or 2, wherein Z1 is CH.
6. The compound of any one of claims 1 or 2, wherein Z1 is N.
7. The compound of any one of claims 1 or 2, wherein Z2 is N, C-F, or C-CN.
8. The compound of any one of claims 1 or 2, wherein R1, R2, and R3 are each independently –CH3 or –C2H5.
9. The compound of any one of claims 1 or 2, wherein R is –H.
10. The compound of claim 1, wherein the compound of a (IV) is selected from 1 3 4 5 6 7 9 16 17 18 43 47 48 76 79 80 81 84 85 89 90 96 97 or a pharmaceutically acceptable salt thereof.
11. A pharmaceutical composition comprising a nd of Formula (IV) X2 R4 H R5 Z2 N R1 R3 X1 Z1 NH (IV) or a pharmaceutically acceptable salt thereof, wherein: X1 is –F, –Cl, –CF3, –CN, or –CH3; X2 is –H, –F, or –Cl; Z1 is N or CH; Z2 is N or CR0; R0 is –H, –F, or –CN; R1, R2, and R3 are each ndently –CH3, –CH2F, –CF3, –C2H5, 2F, or –CH2CF3; R4 and R5 are each independently –H; Q is –C(O)OR; and R is –H or C1-4 alkyl; provided that the compound of Formula (IV) is not compound (2) or a pharmaceutically acceptable salt thereof; and a pharmaceutically acceptable carrier, adjuvant or vehicle.
12. A pharmaceutical composition comprising a compound of Formula (V): or a pharmaceutically acceptable salt thereof, n: X1 is –F, –Cl, –CF3, –CN, or –CH3; X2 is –H, –F, or –Cl; Z1 is N or CH; Z2 is N or CR0; R0 is –H, –F, or –CN; R1, R2, and R3 are each independently –CH3, –CH2F, –CF3, –C2H5, –CH2CH2F, or –CH2CF3; R4 and R5 are each independently –H; Q is –C(O)OR; and R is –H or C1-4 alkyl; provided that the nd of Formula (V) is not compound (2) or a pharmaceutically acceptable salt thereof; and a pharmaceutically able carrier, vehicle, or adjuvant.
13. The pharmaceutical composition of any one of claims 11 or 12, wherein X1 is –F or –Cl.
14. The pharmaceutical composition of any one of claims 11 or 12, wherein X2 is –F or –Cl.
15. The pharmaceutical composition of any one of claims 11 or 12, wherein Z1 is CH.
16. The pharmaceutical composition of any one of claims 11 or 12, wherein Z1 is N.
17. The pharmaceutical composition of any one of claims 11 or 12, wherein Z2 is N, C-F, or C-CN.
18. The pharmaceutical composition of any one of claims 11 or 12, wherein R1, R2, and R3 are each independently –CH3 or –C2H5.
19. The pharmaceutical ition of any one of claims 11 or 12, wherein R is –H.
20. The pharmaceutical composition of claim 11, wherein the compound of Formula (IV) is selected from 1 3 4 5 6 7 9 16 17 18 43 47 48 76 79 80 81 84 85 89 90 96 97 or a pharmaceutically acceptable salt f.
21. A method of inhibiting the replication or reducing the number of influenza viruses in an in vitro biological sample, comprising the step of stering to said in vitro biological sample an effective amount of a compound of Formula (IV) X2 R4 H R5 Z2 N R1 R3 X1 Z1 NH (IV) or a pharmaceutically acceptable salt thereof, wherein: X1 is –F, –Cl, –CF3, –CN, or –CH3; X2 is –H, –F, or –Cl; Z1 is N or CH; Z2 is N or CR0; R0 is –H, –F, or –CN; R1, R2, and R3 are each independently –CH3, –CH2F, –CF3, –C2H5, –CH2CH2F, or –CH2CF3; R4 and R5 are each independently –H; Q is –C(O)OR; and R is –H or C1-4 alkyl; provided that the compound of Formula (IV) is not compound (2) or a pharmaceutically acceptable salt thereof.
22. A method of inhibiting the replication or reducing the number of influenza viruses in an in vitro biological sample, sing the step of administering to said in vitro biological sample an effective amount of a compound of Formula (V) or a pharmaceutically acceptable salt thereof, wherein X1 is –F, –Cl, –CF3, –CN, or –CH3; X2 is –H, –F, or –Cl; Z1 is N or CH; Z2 is N or CR0; R0 is –H, –F, or –CN; R1, R2, and R3 are each independently –CH3, –CH2F, –CF3, –C2H5, –CH2CH2F, or –CH2CF3; R4 and R5 are each independently –H; Q is –C(O)OR; and R is –H or C1-4 alkyl; provided that the compound of a (V) is not compound (2) or a pharmaceutically able salt thereof.
23. The method of any one of claims 21 or 22, wherein X1 is –F or –Cl.
24. The method of any one of claims 21 or 22, wherein X2 is –F or –Cl.
25. The method of any one of claims 21 or 22, wherein Z1 is CH.
26. The method of any one of claims 21 or 22, wherein Z1 is N.
27. The method of any one of claims 21 or 22, wherein Z2 is N, C-F, or C-CN.
28. The method of any one of claims 21 or 22, wherein R1, R2, and R3 are each independently –CH3 or –C2H5.
29. The method of any one of claims 21 or 22, wherein R is –H.
30. The method of claim 21, wherein the compound of Formula (IV) is selected from 1 3 4 5 6 7 9 16 17 18 43 47 48 76 79 80 81 84 85 89 90 96 97 or a pharmaceutically acceptable salt f.
31. Use of a compound of Formula (IV) X2 R4 H R5 Z2 N R1 R3 X1 Z1 NH (IV) or a pharmaceutically acceptable salt f, wherein X1 is –F, –Cl, –CF3, –CN, or –CH3; X2 is –H, –F, or –Cl; Z1 is N or CH; Z2 is N or CR0; R0 is –H, –F, or –CN; R1, R2, and R3 are each independently –CH3, –CH2F, –CF3, –C2H5, –CH2CH2F, or R4 and R5 are each independently –H; Q is –C(O)OR; and R is –H or C1-4 alkyl; provided that the compound of Formula (IV) is not compound (2) or a pharmaceutically acceptable salt thereof, for the preparation of a medicament for treating or preventing influenza virus infection in a patient.
32. Use of a compound of Formula (V) or a pharmaceutically acceptable salt thereof, wherein X1 is –F, –Cl, –CF3, –CN, or –CH3; X2 is –H, –F, or –Cl; Z1 is N or CH; Z2 is N or CR0; R0 is –H, –F, or –CN; R1, R2, and R3 are each independently –CH3, –CH2F, –CF3, –C2H5, –CH2CH2F, or R4 and R5 are each independently –H; Q is –C(O)OR; and R is –H or C1-4 alkyl; provided that the compound of a (V) is not compound (2) or a pharmaceutically acceptable salt thereof, in the manufacture of a medicament for treating or preventing influenza virus infection in a patient.
33. The use of any one of claims 31 or 32, wherein X 1 is –F or –Cl.
34. The use of any one of claims 31 or 32, wherein X 2 is –F or –Cl.
35. The use of any one of claims 31 or 32, wherein Z 1 is CH.
36. The use of any one of claims 31 or 32, wherein Z 1 is N.
37. The use of any one of claims 31 or 32, wherein Z 2 is N, C-F, or C-CN.
38. The use of any one of claims 31 or 32, wherein R 1, R2, and R3 are each independently – CH3 or –C2H5.
39. The use of any one of claims 31 or 32, wherein R is –H.
40. The use of claim 30, n the compound of Formula (IV) is selected from 1 3 4 5 6 7 9 16 17 18 43 47 48 76 79 80 81 84 85 89 90 96 97 or a pharmaceutically acceptable salt thereof.
41. A method of preparing a compound of Formula (IV) X2 R4 H R5 Z2 N R1 R3 X1 Z1 NH (IV) or a pharmaceutically able salt thereof, wherein X1 is –F, –Cl, –CF3, –CN, or –CH3; X2 is –H, –F, or –Cl; Z1 is N or CH; Z2 is N or CR0; R0 is –H, –F, or –CN; R1, R2, and R3 are each independently –CH3, –CH2F, –CF3, –C2H5, –CH2CH2F, or –CH2CF3; R4 and R5 are each independently –H; Q is –C(O)OR; and R is –H or C1-4 alkyl; provided that the compound of Formula (IV) is not compound (2) or a pharmaceutically acceptable salt thereof, comprising the steps of: (i) reacting a compound having the formula wherein L2 is a halogen, with compound B , wherein G is trityl, to form a compound ; and (ii) deprotecting the G group of the compound synthesized in step (i) under suitable conditions to form a nd of Formula (IV) or a pharmaceutically able salt thereof.
42. A compound according to claim 1 or claim 2, substantially as herein described with reference to any one of the examples and/or figures.
43. A pharmaceutical composition according to claim 11 or claim 12, substantially as herein bed with reference to any one of the examples and/or figures.
44. A method of inhibition according to claim 21 or claim 22, substantially as herein described with reference to any one of the examples and/or figures.
45. A use ing to claim 31 or claim 32, substantially as herein bed with reference to any one of the examples and/or figures.
46. A method of preparation according to claim 41, substantially as herein described with reference to any one of the examples and/or figures.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161513793P | 2011-08-01 | 2011-08-01 | |
US61/513,793 | 2011-08-01 | ||
NZ620086A NZ620086B2 (en) | 2011-08-01 | 2012-08-01 | Inhibitors of influenza viruses replication |
Publications (2)
Publication Number | Publication Date |
---|---|
NZ716783A NZ716783A (en) | 2017-08-25 |
NZ716783B2 true NZ716783B2 (en) | 2017-11-28 |
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