EP0638080A1 - PYRIMIDINE 7-BISUBSTITUEE-METHYL-4-OXO-3H -, 5H --PYRROLO 3,2-d -], UTILISATION PHARMACEUTIQUE ET COMPOSITIONS CONTENANT LADITE PYRIMIDINE - Google Patents

PYRIMIDINE 7-BISUBSTITUEE-METHYL-4-OXO-3H -, 5H --PYRROLO 3,2-d -], UTILISATION PHARMACEUTIQUE ET COMPOSITIONS CONTENANT LADITE PYRIMIDINE

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Publication number
EP0638080A1
EP0638080A1 EP93912081A EP93912081A EP0638080A1 EP 0638080 A1 EP0638080 A1 EP 0638080A1 EP 93912081 A EP93912081 A EP 93912081A EP 93912081 A EP93912081 A EP 93912081A EP 0638080 A1 EP0638080 A1 EP 0638080A1
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EP
European Patent Office
Prior art keywords
cyclo
inhibitor
ethyl
mammalian
effective amount
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EP93912081A
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German (de)
English (en)
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EP0638080A4 (fr
Inventor
Shri Niwas
John A. Secrist, Iii
John A. Montgomery
Mark David Erion
Wayne C. Guida
Steve E. Ealick
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Biocryst Pharmaceuticals Inc
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Biocryst Pharmaceuticals Inc
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Publication of EP0638080A1 publication Critical patent/EP0638080A1/fr
Publication of EP0638080A4 publication Critical patent/EP0638080A4/fr
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/04—Ortho-condensed systems
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00—Carboxylic acid nitriles
    • C07C255/01—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms
    • C07C255/32—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring
    • C07C255/35—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring the carbon skeleton being further substituted by halogen atoms, or by nitro or nitroso groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00—Carboxylic acid nitriles
    • C07C255/01—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms
    • C07C255/32—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring
    • C07C255/40—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring the carbon skeleton being further substituted by doubly-bound oxygen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00—Carboxylic acid nitriles
    • C07C255/01—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms
    • C07C255/32—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring
    • C07C255/42—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring the carbon skeleton being further substituted by singly-bound nitrogen atoms, not being further bound to other hetero atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D207/30—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members
    • C07D207/34—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • 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

Definitions

  • the present invention relates to derivatives of 4-oxo- 3H,5H-pyrrolo[3,2-d]pyrimidine.
  • it relates to 4- oxo-3H,5H-pyrrolo[3,2-d]pyrimidinederivativessubstitutedatthe 7-position.
  • Purine nucleoside phosphorylase catalyzes the phosphorolysis of purine nucleosides in a reversible reaction. Individuals who are deficient in PNP exhibit impaired T-cell development, resulting in lowered cell-mediated immunity, but normal B-cell development, resulting in normal humoral immunity. Accordingly, specific inhibitors of PNP that selectively inhibit T-cell development without damaging humoral immunity could be potentially effective against disorders in which activated T- cells are pathogenic.
  • the present invention is a compound of the formula
  • R 1 is H, NH 2 , or OCH 3
  • R 2 is an optionally substituted cyclic group optionally containing one or more heteroatoms
  • R 3 and R 4 are independently H or C-,_ 4 alkyl
  • m is 0-4
  • n is 0-6, p is
  • X is CN , CSNH 2 , PO (OH) 2 , COOH , S0 2 NH 2 , NH 2 , OH , CNHNH 2 , tetrazole, triazole or COR 5 where R 5 is C-,_ 4 alkyl, CF 3 , NH 2 , or
  • 0C-,. 4 alkyl, and Y is O or NH.
  • the compound of the present invention is useful as a PNP inhibitor.
  • a pharmaceutical composition for the selective suppression of mammalian T-cell immunity comprising an pharmaceutically effective amount of the compound of the present invention and a pharmaceutically acceptable carrier or diluent and a method for the selective suppression of mammalian T-cell immunity without diminished effect on humoral immunity comprising administering to a subject a ' pharmaceutically effective amount of the compound of the present invention.
  • the optionally substituted cyclic group (hereinafter referred to as cyclo) recited for the above formula includes aromatic, heteroaromatic, alicyclic, and heteroalicyclic groups preferably containing five to nine atoms.
  • Preferred optional substituents include halogen, hydroxy, alkoxy, alkyl, and trifluoro ethyl.
  • Exemplary substituents include chloro, fluoro, methoxy, ethoxy, propoxy, butoxy, methyl, ethyl, propyl, and butyl.
  • Preferred heteroatoms include oxygen, nitrogen, and sulfur, which can be present in combination in the same group.
  • the preferred aromatic and heteroaromatic groups are phenyl, 2- or 3-rthienyl, 2- or 3-furanyl, 2-, 3-, or 4-pyridinyl, 2- or 3- pyrrolyl, 2-, 4-, or 5-thiazolyl, 2-pyrazinyl, 3- or 4-pyridazinyl, and 3-, 4-, or 5-pyrazolyl.
  • the preferred alicyclic and heteroalicyclic groups are 1- or 2-adamantyl, cyclohexyl, cycloheptyl, 2- or 3-tetrahydrofuranyl, 2- or 3-tetrahydrothienyl, 2- or 3-tetrahydropyranyl, 2-, 3-, or 4-piperidinyl, 3- or 4-pyrazolidinyl, 2-, 4-, or 5-thiazolidinyl, 2- or 3-piperazinyl, 2- or 3-morpholinyl, or 3- or 4-hexahydropyridazinyl.
  • Examples include compounds wherein R 1 is NH 2 or H, R 2 is phenyl, 3-chlorophenyl, or 3,4-dicholorophenyl, and (CR 3 R 4 ) n -(Y) p -(CH 2 ) m -X is CH 2 CH 2 CN? CH 2 CH 2 COOH,' CH 2 CH 2 CH 2 OH CH 2 CH 2 CH 2 CN; CH 2 CH 2 CH 2 COOH; CH 2 CH 2 CH 2 CH 2 OH, or substituents where an oxygen atom replaces one or more of the methylene groups.
  • compositions suitable for enteral such as oral or rectal, transdermal and parenteral administration to mammals including man, which are useful to inhibit purine nucleoside phosphorylase activity and for the treatment of disorders responsive thereto, comprising an effective amount of a pharmacologically active compound of the invention, alone or in combination, with one or more pharmaceutically acceptable carriers.
  • Preferred pharmaceutical compositions are tablets and gelatin capsules comprising the active ingredient together with a) diluents, e.g., lactose, dextrose, sucrose, annitol, sorbitol, cellulose and/or glycine; b) lubricants, e.g., silica, talcum, stearic acid, its magnesium or calcium salt and/or polyethyleneglycol; for tablets also c) binders, e.g., magnesium aluminum silicate, starch paste, gelatin, tragacanth, methylcellulose, sodium carboxymethylcellulose and/or polyvinylpyrrolidone; if desired d) disintegrants, e.g., starches, agar, alginic acid or its sodium salt, or effervescent mixtures; and/or e) absorbents, colorants, flavors and sweeteners.
  • diluents e.g., lactose, dextrose, sucrose
  • compositions are preferably aqueous isotonic solutions or suspensions, and suppositories are advantageously prepared from fatty emulsions or suspensions.
  • Said compositions may be sterilized and/or contain adjuvants, such as preserving, stabilizing, wetting or emulsifying agents, solution promoters, salts for regulating the osmotic pressure and/or buffers. In addition, they may also contain other therapeutically valuable substances.
  • Said compositions are prepared according to conventional mixing, granulating or coating methods, respectively, and contain about 0.1 to 75%, preferably about 1 to 50%, of the active ingredient.
  • transdermal devices are in the form of a bandage comprising a backing member, a reservoir containing the compound optionally with carriers, optionally a rate controlling barrier to deliver the compound to the skin of the host at a controlled and predetermined rate over a prolonged period of time, and means to secure the device to the skin.
  • the first step of the method involves reacting an optionally substituted cyclic aldehyde with cyanoacetic acid at a molar ratio of about l/l to 1/5 in the presence of ammonium acetate at about reflux temperature for about 10 hours to 8 days to make a 3-cyclo-substituted pentanedinitrile as an intermediate.
  • the 3- cyclo-pentanedinitrile is reacted with an alkyl formate such as ethyl formate and a strong base such as the metal-containing bases sodium hydride or sodium alkoxide, e.g. , sodium methoxide, at a molar ratio of about 1-2/3-6/1-3 and at a temperature of about 20-65°C for about 10 hours to 8 days to make a 3- ⁇ yclo- 2-formylpentanedinitrile as a further intermediate.
  • an alkyl formate such as ethyl formate
  • a strong base such as the metal-containing bases sodium hydride or sodium alkoxide, e.g. , sodium methoxide
  • the next step involves reacting the 3-cyclo-2-formylpentanedinitrile with a glycine alkyl ester hydrochloride and sodium or ammonium acetate at a molar ratio of about 1-2/1.5-4/1.5-4 and at a temperature of about 20-60"C for about 10-48 hours to make methyl N-[(3-cyclo-2,4-dicyano)-2-butenyl]glyc.ine as an intermediate.
  • the methyl N-[(3-cyclo-2,4-dicyano)-2- butenyl]glycine is reacted with an alkyl chlorofor ate such as ethyl chloroformate and l r 5-diazabicyclo[4.3.0]non-5-ene (DBN) or l,8-diazabicyclo[5.4.0]undec-7-ene (DBU) at a molar ratio of about 1-2/1.5-5/1.5-4 and at a temperature of about 0-50°C for about 10 hours to 10 days to make methyl 3-amino-4-(2-cyano-l- cyclo-ethyl)-l-ethyl-lH-pyrrole-l,2-dicarboxylate as an intermediate.
  • an alkyl chlorofor ate such as ethyl chloroformate and l r 5-diazabicyclo[4.3.0]non-5-ene (DBN) or l,8-d
  • the next step involves reacting the methyl 3- amino-4-(2-cyano-l-cyclo-ethyl) -1-ethyl-lH-pyrrole-l,2- dicarboxylate with a base such as sodium carbonate at a molar ratio of about 2/1 to 1/5 and at about room temperature for about 10-48 hours to make methyl 3-amino-4-(2-cyano-l-cyclo-ethyl)- lH-pyrrole-2-carboxylate as an intermediate.
  • a base such as sodium carbonate
  • the methyl 3-amino-4-(2-cyano-l-cyclo-ethyl)-lH-pyrrole-2- carboxylate is reacted with benzoylisothiocyanate at a molar ratio of about 2/1 to 1/2 and at about room temperature for about 30 minutes to 3 hours to make N-benzoyl-N'-[4-(2-cyano-l-cyclo- ethyl)-2-methoxycarbonyl-lH-pyrrol-3-yl]thiourea as an intermediate.
  • the next step reacts the N-benzoyl-N_L-[4-(2- cyano-l-cyclo-ethyl)-2-methoxycarbonyl-lH-pyrrol-4-3-yl]thiourea with an alkyl halide such as methyl iodide at a molar ratio of about 1/1 to 1/6 and at a temperature of about 0-30°C for about 10 minutes to 10 hours to make N-benzoyl-N'-[4-(2-cyano-i-cyclo- ethyl)-2-methoxycarbonyl-lH-pyrrol-3-yl]S-methylthiourea as an intermediate.
  • an alkyl halide such as methyl iodide
  • the N-benzoyl-N'- ⁇ 4-(2- cyano-1-cyclo-ethyl) -2-methoxycarbonyl-lIl-pyrrol-3-yl]-S.- methylthiourea (about 1-2 mol) is reacted with methanolic or ethanolic ammonia at a ratio of about 1/1 to 1/20 and at a temperature of about 20-130°C for about 16-60 hours to make a mixture of a 2-amino compound of the present invention 3-cyclo- 3-[2-amino-4-oxo-3H_-5H_-pyrrolo[3 , 2-d_]pyrimidin-7- yl]propanenitrile and a 3-cyclo-3-[2-methylmercapto-4-oxo-3H,5H- pyrrolo[3,2-d]pyrimidin-7-yl]propanenitrile a ⁇ an intermediate in making another compound of the present invention.
  • an oxidizing agent such as permanganate or hydrogen peroxide
  • the 3-cyclo-3-[2-methylsulfonyl-4-oxo-3H,5H- pyrrolo[3,2-d]pyrimidin-7-yl]propanenitrile is reacted with a sodium alkoxide such as sodium methoxide at a molar ratio of about 1/1 to 1/10 and at a temperature of about 25-100°C for about 1-48 hours to make a 2-methoxy compound of the present invention 3-cyclo-3-[2-methoxy-4-oxo-3H,5H-pyrrolo[3 , 2- d]pyrimidin-7-yl]propanenitrile.
  • a method of making a compound of the present invention wherein R 1 is hydrogen is reacted with dimethylformamide dimethyl acetal at a molar ratio of about 1/1 to 1/4 and at a temperature of about 25-100°C for about 1-10 days to make methyl 4-(2-cyano-l-cyclo-ethyl)-3-[N- (dimethyla inomethylene)amino]-lH-pyrrole-2-carboxylate as an intermediate.
  • the next step involves reacting the methyl 4-(2- cyano-1-cyclo-ethyl)-3-[N-(dimethylaminomethylene)amino]-1H- pyrrole-2-carboxylate with methanolic or ethanolic ammonia at a molar ratio of about 1/1 to 1/20 and at a temperature of about 20-130*C for about 10-68 hours to make the compound of the present invention 3-cyclo-3-[4-oxo-3H,5H-pyrrolo[3,2-d]pyrimidin- 7-yl]propanenitrile.
  • variations of the aforesaid procedures are useful in making the variety of compounds of the present invention without departing from the spirit thereof.
  • the present invention provides a method of inhibiting purine nucleoside phosphorylase activity in mammals and treating diseases and conditions responsive thereto, e.g., autoimmune disorders, rejection of transplantation, or psoriasis, which comprises administering to a mammal in need thereof an effective amount of a compound of the invention or of a pharmaceutical composition comprising a said compound in combination with one or more pharmaceutically acceptable carriers.
  • diseases and conditions responsive thereto e.g., autoimmune disorders, rejection of transplantation, or psoriasis
  • a further aspect of the invention relates to a method of inhibiting the phosphorolysis and metabolic breakdown of antiviral or antitumor purine nucleosides in mammals which comprises administering in conjunction therewith to a mammal in need thereof, either separately or in combination therewith, an effective purine nucleoside phosphorylase inhibiting amount of a compound of the invention or of a said compound in combination with one or more pharmaceutically acceptable carriers.
  • such relates to a method of inhibiting the phosphorolysis and metabolic breakdown of purine nucleosides known in the art, e.g., of 2'-deoxyguanosine, 2',3'- dideoxyinosine, 2' ,3'-dideoxyguanosine or 2' ,3'-dideoxyadenosine.
  • the invention thus relates to a method of potentiating the antiviral or antitumor effect of 2' or 3 f - monodeoxypurinenucleosides or of 2 ' ,3'-dideoxypurine nucleosides in mammals which comprises administering in conjunction therewith to a mammal in need thereof, either separately or in combination with a said nucleoside, an effective purine nucleoside phosphorylase inhibiting amount of a compound of the invention preferably in combination with one or more pharmaceutically acceptable carriers.
  • such relates to a method of enhancing or potentiating the effect of 2' ,3'-dideoxypurine nucleosides known in the art, e.g., of 2' ,3'-dideoxyinosine, 2' ,3'-dideoxyguanosine or 2'-3'-dideoxyadenosine for the treatment of retrovirus infections, e.g., HIV-retrovirus infections (acquired immunodeficiency syndrome, AIDS).
  • retrovirus infections e.g., HIV-retrovirus infections (acquired immunodeficiency syndrome, AIDS).
  • 2' ,3'- Dideoxypurine nucleosides are known in the art as inhibitors of HIV retrovirus infectivity and to be metabolically degraded by PNP, e.g., as described in Biochemical Pharmacology 22, 3797 (1987) . Such are administered at a pharmaceutically acceptable dose which is effective in inhibiting HIV-retrovirus infections. Preferably the lowest possible effective dose is used.
  • the pharmaceutically acceptable effective dosage of active compound of the invention to be administered is dependent on the species of warm-blooded animal (mammal) , the body weight, age and individual condition, and on the form of administration.
  • the pharmaceutical composition may be oral, parenteral, suppository or other form which delivers the compound of the present invention into the bloodstream of a mammal to be treated.
  • An oral form has from about 1 to about 150 mg of the compound of the present invention for an adult (50 to 70 kg) which is mixed together with pharmaceutically acceptable diluents such as lactose.
  • pharmaceutically acceptable diluents such as lactose.
  • 25 mg of the compound of the present invention is mixed together with 192 mg lactose, 80 mg modified starch and 3 mg magnesium stearate.
  • injectable forms of the compound are also contemplated for administration.
  • the present invention is also useful with other therapeutic agents.
  • a daily dosage of the compound of the present invention for a human weighing 50 to 70 kg of 1-50 mg/kg inhibits metabolic destruction of certain anticancer agents such as 3-2'-deoxy-6- thioguanosine and antiviral agents such as 2' ,3'-dideoxyinosine, an anti-AIDS drug.
  • anticancer agents such as 3-2'-deoxy-6- thioguanosine and antiviral agents such as 2' ,3'-dideoxyinosine, an anti-AIDS drug.
  • anticancer agents such as 3-2'-deoxy-6- thioguanosine
  • antiviral agents such as 2' ,3'-dideoxyinosine
  • an anti-AIDS drug an anti-AIDS drug.
  • These types of agents are known to be susceptible to cleavage. Upon cleavage, the agents lose effectiveness.
  • the compounds of the present invention are capable of reducing such cleavage. This protection, therefore, enhance
  • the heavy oil is extracted into ethyl acetate, washed with H 2 0 (1 x 100 ml) and dried (MgSO A ) .
  • the ethyl acetate layer is evaporated to give a red-brown oil (11.0 g) that is used in the next step without further purification.
  • the above compounds A and B are prepared in this Example.
  • the compound A is a compound of the present invention and the compound B is an intermediate.
  • a solution of the methylthio intermediate of Example 7 (6.90 g, 12.54 mmol) in MeOH (200 ml) is saturated at 0 °C with ammonia and heated at 100 "C for 20 h in a glass-lined stainless steel bomb. The reaction mixture is brought to room temperature and the solvent is evaporated at room temperature.
  • the compound of the present invention of Example 8 is tested for enzyme inhibition activity.
  • a purine nucleoside phosphorylase (PNP) enzyme assay is performed in which the PNP activity (IC 50 ) for the compound (8A) is found, which is determined radio ⁇ hemically by measuring the formation of [ 14 C]- hypoxanthine from [ 14 C]-inosine (see Biomedicine r 1980, 3JL, 39) using calf spleen as the enzyme source. At 1 mM phosphate the IC 50 is 0.64 ⁇ iS. and at 50 mM phosphate the IC 50 is 10 ⁇ M.
  • PNP purine nucleoside phosphorylase
  • Ar is each of the following: (1) phenyl, 2,3- dichlorophenyl, 3-methyIphenyl, and 3-methoxyphenyl, (2) thienyl
  • R 2 is each of: 10) 1-adamantyl, 11) 2-adamantyl, 12) cyclohexyl, 13) cycloheptyl, 14) cyclopentyl, 15) tetrahydrofuranyl, 16) tetrahydrothienyl, 17) tetrahydropyranyl,
  • Example 15 The compound prepared in Example 13 is tested for enzyme inhibition activity as in Example 9. At 1 mM phosphate the IC 50 is 0.023 ⁇ M and at 50 mM phosphate the IC 50 is 4.7 ⁇ M. EXAMPLE 15
  • EXAMPLE 16 The compound prepared in Example 15 is tested for enzyme inhibition activity as in Example 9. At 1 mM phosphate the IC 50 is 0.012 ⁇ M and at 50 mM phosphate the IC 50 is 0.19 ⁇ M.
  • Example 17 The compound prepared in Example 17 is tested for enzyme inhibition activity as in Example 9. At 1 mM phosphate the IC 50 is 0.20 ⁇ M and at 50 mM phosphate the IC 50 is 6.6 ⁇ M.
  • the solvent is removed on a water aspirator (30 °C) and vacuum pump (lyophilize) to give a semisolid mass which is purified on a silica gel column using CHCl 3 -MeOH as the eluent, yield 0.1 g.
  • Example 19 The compound prepared in Example 19 is tested for enzyme inhibition activity. Significant activity (IC 50 ) is found.
  • Example 21 The compound prepared in Example 21 is tested for enzyme inhibition activity as in Example 9. At 1 mM phosphate the IC 50 is 0.097 ⁇ M and at 50 mM phosphate the IC 50 is 1.0 ⁇ M. EXAMPLE 23
  • a compound of the present invention is prepared wherein X is PO(OH) 2 .
  • the nitrile group of the compound of Example 13 is converted to the corresponding amide by treatment with sulfuric acid.
  • the amide is converted to the corresponding amine, which is then converted to the corresponding pyridinium salt using a ' pyrillium salt.
  • Conversion of the salt to the corresponding halide is accomplished using sodium bromide, which is then converted to the phosphonic ester using triethyl phosphite. Hydrolysis of the ester using trimethylsilylbromide yields the corresponding phosphonic acid wherein "n" is 1 and "m" is 0.
  • EXAMPLE 24 This Example makes a compound of the present invention by stepping up the number of carbon atoms from “m” is 0 to "m” is 1.
  • the nitrile group of the compound of Example 13 is reduced to the corresponding aldehyde, which is then converted to the corresponding alcohol.
  • Using phosphorous tribromide the alcohol is converted to the corresponding alkyl bromide, which is then converted to the nitrile compound of the present invention wherein m is 1 using potassium cyanide.
  • EXAMPLE 25 In this example a compound of the present invention is prepared wherein "p" is 1 and "Y" is oxygen.
  • the alcohol prepared as an intermediate in the previous example is converted to the corresponding diethyl phosphonomethyl ether using diethylehloromethyl phosphonate. Removal of the ethyl groups of the ester is accomplished using trimethylsilylbromide to give the phosphonic acid.
  • a compound of the present invention is made wherein "Y" is NH and "X" is S0 2 NH 2 .
  • the nitrile group of the compound of Example 13 is reduced to the amine using standard catalytic hydrogenation with palladium in acidic media (usually 0.01 N to 1 N HCl), which is then converted to the sulfamide using sulphamoyl chloride.
  • a compound of the present invention is prepared wherein "X" is COOH and "Y" is NH by reacting the methyl amine intermediate prepared in the previous example with chloroacetic acid.
  • EXAMPLE 28 In this example a compound of the present invention is prepared wherein "X" is PO(OH) 2 and "Y" is NH by reacting the methyl amine intermediate prepared in Example 27 with diethylehloromethyl phosphonate, and reacting the resulting product with trimethylsilylbromide.
  • a compound of the present invention is prepared wherein "X" is S0 2 NH 2 and "Y" is oxygen by reacting the alcohol intermediate prepared in Example 24 with sulphamoyl chloride.
  • EXAMPLE 30 In this example a compound of the present invention is prepared wherein R 1 is H, R 2 is phenyl, R 3 and R 4 are hydrogen, m is 0, n is 1, p is 0, and X is CN.
  • a modification of the procedure disclosed in Mu-Ill Li , et al., J. Or ⁇ . Chem.. Vol. 44, No. 22, 3826 (1979) is used.
  • a mixture of the compound of Example 5 and dimethylformamide dimethyl acetal is reacted at room temperature for two days and then evaporated to dryness in vacuo. The residue is crystallized to give the pure N- (dimethylamino) ethylene derivative, which is cyclized with saturated methanolic ammonia to give the desired end product.
  • EXAMPLE 31 In this example a compound of the present invention is prepared wherein R ⁇ is 0CH 3 , R 2 is phenyl, R 3 and R 4 are hydrogen, m is 0, n is 1, p is 0, and X is CN.
  • R ⁇ is 0CH 3
  • R 2 is phenyl
  • R 3 and R 4 are hydrogen
  • m is 0,
  • n is 1
  • p is 0,
  • X is CN.
  • the S-methyl group is oxidized to methylsulfone, which then is converted to the final methoxy compound by treatment with sodium methoxide in methanol.
  • EXAMPLE 32 In this example a compound of the present invention is prepared wherein X is tetrazole.
  • the compound of Example 13 is treated with lithium azide in the presence of ammonium chloride as a catalyst in dimethylformamide (DMF) at 100 degrees C to give the desired tetrazole.
  • DMF dimethylformamide
  • a compound of the present invention is prepared wherein X is triazole.
  • the compound of Example 19 is treated with hydrazine hydrate to give the corresponding hydrazide, which is then treated with imino ether to give the desired triazole.
  • Example 10 The compound prepared in Example 10 is tested for enzyme inhibition activity as in Example 9. At 1 mM phosphate the IC 50 is 0.012 ⁇ M and at 50 mM phosphate the IC 50 is 2.0 ⁇ M.
  • an amidine compound of the present invention is prepared, i.e., wherein X in the recited generic formula is CNHNH 2 .
  • the compound A from Example 8 is reacted with sodium methoxide in methanol at room temperature for about 2 days to give a methyl-imidate intermediate.
  • the intermediate is then reacted with ammonia in methanol to give the amidine product.
  • Example 10 The compound prepared in Example 10 is hydrolyzed to the corresponding acid of the above formula in this example.
  • a solution of 3-(3-chlorophenyl)-3-(2-amino-4-oxo-3H,5H- pyrrolo(3,2-d)pyrimidin-7-yl)propanenitrile (2.0 g; 63.75 mmol) in 6N HCl (60 ml) is heated at reflux for 8 h.
  • the solvent is evaporated in vacuo and the residue is dissolved in H 2 0 (18 ml) .
  • the resulting solution is adjusted to pH -10 by cone, ammonium hydroxide and any insoluble material is removed by filtration.
  • the filtrate is then readjusted to pH -6.8.
  • the white precipitated material was collected, washed with H 2 0, and dried to yield 1.8 g of desired compound, m.p. 295-96°C dec, as a dl racemic mixture.
  • N- methylmorpholine (0.48 g, 4.75 mmol) in DMF (5 ml) is then added dropwise during 5-10 min, and the solution is kept near 0°C for 5 h. It is then allowed to warm to room temperature and is stirred overnight (18 h) .
  • a second portion of diphenylphosphonyl azide (0.36 g) , (R)d-(+)- ⁇ - ethylbenzyla ine (0.16 g) and N- methylmorpholine (0.24 g) is added at O'C and the reaction mixture is stirred for 2 days.
  • a purine nucleoside phosphorylase (PNP) enzyme assay is performed in which the inhibitory activity (IC 50 ) of the S- isomer compound is determined by measuring the formation of [ 14 C]-hypoxanthine from [ 14 C]-inosine (see Biomedicine. 1980, 33, 39) using calf spleen PNP in the presence and absence of inhibitor.
  • the IC 50 is 0.031 ⁇ M and at 1 mM phosphate, it is 0.0059 ⁇ M.
  • Example 38 The procedure described in Example 37 is repeated to prepare the above compound, (R) -3-(2-amino-4-oxo-3H, 5H_- pyrrolo[3,2-d]pyrimidin-7-yl)-3-(3-chlorophenylJpropanoic acid from Compound B (R,R-isomer) , obtained in Example 37. Yield 40%, m.p. > 280°C dec.
  • the compound prepared in Example 38 is tested for enzyme inhibition activity as in Example 37. At 50 mM phosphate the IC 50 is 0.900 ⁇ M and at 1 mM phosphate the IC 50 is 0.160 ⁇ M. Thus the S-isomer (Example 38) is ca.
  • Example 39 The compound from Example 39 (1 g) in ethanol (100 ml) is suspended in in 30% palladium on carbon (1 g) and subjected to reflux for a few minutes. Hydrazine hydrate (0.3 ml) is added with stirring an the mixture refluxed for two days. Additional hydrazine hydrate (0.3 ml) and palladium on carbon (0.5 g) are added and the mixture refluxed for an additional four days. The catalyst is removed by filtration, and the filtrate reduced to 25 ml and filtered on Whatman filter paper and evaporated to give the final product.
  • Example 10 The compound of Example 10 (6.80 g) in 6N HCl (400 ml) is refluxed for 10 h, cooled overnight, and evaporated under reduced pressure. The residue is added to methanol and evaporated and then added to toluene, which results in a white foam in nearly quantitative yield.
  • a solution of the dried white foam in anhydrous methanol (400 ml) is cooled below 0 ⁇ C in an ice salt bath under dry conditions.
  • Thienyl chloride (10.31 g) is added slowly dropwise, and the solution allowed to come to ambient temperature and stand overnight. The solvent is evaporated in vacuo, fresh methanol and toluene are added and then evaporated to aid in the removal of acid vapors.
  • a suspension of the solid in cold water (200 ml) is neutralized in IN NaOH and the solid is collected by filtration, washed with cold water, and dried in vacuo over P 2 0 5 at 110°C. Yield 6.08 g (81% from the material of Example 10) .
  • This product is of sufficient purity for use in the next step, but may recrystallize in methanol using Soxhlet apparatus to fine white crystals having a m.p. of 302-303°C (decompose) .
  • An amount of 6g of the product from the previous paragraph with 100 mg dry ammonium sulfate in hexamethyldisilazane (400 ml) is refluxed for 8 h under dry conditions.
  • the resulting clear solution is evaporated in vacuo to a viscous gum that is further dried over P 2 0 5 , which is used in the next Example without further treatment.

Abstract

Composé de la formule (I) dans laquelle R1 est H, NH¿2? ou OCH3, R?2¿ est un groupe cyclique éventuellement substitué contenant éventuellement un ou plusieurs hétéroatomes, R3 et R4 sont indépendamment H ou alkyle C¿1-4?, m est 0-4, n est 0-6, p est 0,1, X est CN, CSNH2, PO(OH)2, COOH, SO2NH2, NH2, OH, CNHNH2, tétrazole, triazole ou COR?5, R5¿ étant alkyle C¿1-4?, CF3, NH2 ou alkyle OC1-4, et Y est O ou NH, utile en tant que substance pharmaceutique.
EP93912081A 1992-04-21 1993-03-25 PYRIMIDINE 7-BISUBSTITUEE-METHYL-4-OXO-3H -, 5H --PYRROLO 3,2-d -], UTILISATION PHARMACEUTIQUE ET COMPOSITIONS CONTENANT LADITE PYRIMIDINE. Withdrawn EP0638080A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US87144192A 1992-04-21 1992-04-21
US871441 1992-04-21
PCT/US1993/002841 WO1993021187A1 (fr) 1992-04-21 1993-03-25 PYRIMIDINE 7-BISUBSTITUEE-METHYL-4-OXO-3H^_, 5H^_-PYRROLO[3,2-d^_], UTILISATION PHARMACEUTIQUE ET COMPOSITIONS CONTENANT LADITE PYRIMIDINE

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EP0638080A1 true EP0638080A1 (fr) 1995-02-15
EP0638080A4 EP0638080A4 (fr) 1995-08-23

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EP (1) EP0638080A4 (fr)
JP (1) JPH07507062A (fr)
KR (1) KR950701335A (fr)
AU (1) AU4276693A (fr)
CA (1) CA2133346A1 (fr)
FI (1) FI944933A (fr)
HU (1) HUT71559A (fr)
NO (1) NO303637B1 (fr)
RU (1) RU94046387A (fr)
WO (1) WO1993021187A1 (fr)

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EP0986563A1 (fr) * 1997-05-29 2000-03-22 Novartis AG 2-amino-7-(1-substitue-2-hydroxyethyl)-3,5-dihydro-pyrrolo 3,2-d ] pyrimidine-4-ones
US6355244B1 (en) 1997-11-17 2002-03-12 University Of Kentucky Research Foundation Methods and compositions for the treatment of psoriasis
US6174888B1 (en) 1998-05-28 2001-01-16 Novartis Ag 2-amino-7-(1-substituted-2-hydroxyethyl)-3,5-dihydropyrrolo[3,2-D]pyrimidin-4-ones
GB0215392D0 (en) * 2002-07-03 2002-08-14 Glaxo Group Ltd Chemical compounds
EP1661897B1 (fr) * 2003-08-26 2013-12-04 Teijin Pharma Limited Derive de pyrrolopyrimidinone
US7557113B2 (en) 2003-08-26 2009-07-07 Teijin Pharma Limited Substituted pyrrolo[3,2-d]pyrimidine derivatives
MY140748A (en) 2004-12-06 2010-01-15 Astrazeneca Ab Novel pyrrolo [3,2-d] pyrimidin-4-one derivatives and their use in therapy
US7763257B2 (en) 2004-12-09 2010-07-27 Christina Juneau Compositions comprising transforming growth factor (TGF)-β1 and TGF-β2 in admixture of proteins obtained from dairy products
EP2225226B1 (fr) 2007-12-26 2016-08-17 Critical Outcome Technologies, Inc. Composés et leur utilisation dans un procédé pour le traitement du cancer
CA2730890C (fr) 2008-07-17 2018-05-15 Critical Outcome Technologies Inc. Composes inhibiteurs et procedes de traitement du cancer
EP3235818A3 (fr) 2010-04-01 2018-03-14 Critical Outcome Technologies, Inc. Composés pour le traitement du vih

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HUT61765A (en) * 1989-10-31 1993-03-01 Biocryst Inc Process for producing purine nucleoside phosphorylase inhibitors and pharmaceutical compositions comprising same as active ingredient
US5189039A (en) * 1989-11-29 1993-02-23 Biocryst, Inc. 7-disubstituted-methyl-4-oxo-3H,5H-pyrrolo[3,2d]pyrimidine and pharmaceutical uses and compositions containing the same

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See also references of WO9321187A1 *

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KR950701335A (ko) 1995-03-23
JPH07507062A (ja) 1995-08-03
HU9403021D0 (en) 1994-12-28
EP0638080A4 (fr) 1995-08-23
CA2133346A1 (fr) 1993-10-28
NO943988L (no) 1994-10-20
HUT71559A (en) 1995-12-28
FI944933A0 (fi) 1994-10-20
NO943988D0 (no) 1994-10-20
WO1993021187A1 (fr) 1993-10-28
FI944933A (fi) 1994-10-20
RU94046387A (ru) 1996-09-27
NO303637B1 (no) 1998-08-10
AU4276693A (en) 1993-11-18

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