WO1997036592A1 - Inhibitors of farnesyl-protein transferase - Google Patents

Inhibitors of farnesyl-protein transferase Download PDF

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Publication number
WO1997036592A1
WO1997036592A1 PCT/US1997/005049 US9705049W WO9736592A1 WO 1997036592 A1 WO1997036592 A1 WO 1997036592A1 US 9705049 W US9705049 W US 9705049W WO 9736592 A1 WO9736592 A1 WO 9736592A1
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aryl
substituted
alkyl
unsubstituted
heterocycle
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PCT/US1997/005049
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French (fr)
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Samuel L. Graham
Theresa M. Williams
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Merck & Co., Inc.
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Priority claimed from GBGB9613600.7A external-priority patent/GB9613600D0/en
Application filed by Merck & Co., Inc. filed Critical Merck & Co., Inc.
Priority to EP97917083A priority Critical patent/EP0904080A4/en
Priority to JP9535434A priority patent/JP2000507579A/en
Priority to AU25524/97A priority patent/AU707139B2/en
Publication of WO1997036592A1 publication Critical patent/WO1997036592A1/en

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
    • C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
    • C07D403/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond
    • 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
    • A61K31/496—Non-condensed piperazines containing further heterocyclic rings, e.g. rifampin, thiothixene or sparfloxacin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P13/00—Drugs for disorders of the urinary system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P13/00—Drugs for disorders of the urinary system
    • A61P13/12—Drugs for disorders of the urinary system of the kidneys
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P27/00—Drugs for disorders of the senses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P27/00—Drugs for disorders of the senses
    • A61P27/02—Ophthalmic agents
    • 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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond

Definitions

  • Ras proteins are part of a signalling pathway that links cell surface growth factor receptors to nuclear signals initiating cellular proliferation.
  • Biological and biochemical studies of Ras action indicate that Ras functions like a G-regulatory protein.
  • Ras In the inactive state, Ras is bound to GDP.
  • Ras Upon growth factor receptor activation Ras is induced to exchange GDP for GTP and undergoes a conformational change.
  • the GTP-bound form of Ras propagates the growth stimulatory signal until the signal is terminated by the intrinsic GTPase activity of Ras, which returns the protein to its inactive GDP bound form (D.R. Lowy and D.M.
  • Mutated ras genes (Ha-ras, Ki4a-ras, Ki4b-ras and N-ras) are found in many human cancers, including colorectal carcinoma, exocrine pancreatic carcinoma, and myeloid leukemias. The protein products of these genes are defective in their GTPase activity and constitutively transmit a growth stimulatory signal.
  • Ras must be localized to the plasma membrane for both normal and oncogenic functions. At least 3 post-translational modifications are involved with Ras membrane localization, and all 3 modifications occur at the C-terminus of Ras.
  • the Ras C-terminus contains a sequence motif termed a "CAAX” or "Cys-Aaa 1 -Aaa 2 -Xaa” box (Cys is cysteine, Aaa is an aliphatic amino acid, the Xaa is any amino acid) (Willumsen et al., Nature 310:583-586 (1984)).
  • this motif serves as a signal sequence for the enzymes farnesyl-protein transferase or geranylgeranyI-protein transferase, which catalyze the alkylation of the cysteine residue of the CAAX motif with a C 15 or C 20 isoprenoid, respectively.
  • the Ras protein is one of several proteins that are known to undergo post-translational farnesylation.
  • farnesylated proteins include the Ras-related GTP-binding proteins such as Rho, fungal mating factors, the nuclear lamins, and the gamma subunit of transducin. James, et al., J. Biol. Chem. 269, 14182 (1994) have identified a peroxisome associated protein Pxf which is also farnesylated. James, et al., have also suggested that there are farnesylated proteins of unknown structure and function in addition to those listed above.
  • Farnesyl-protein transferase utilizes farnesyl pyrophosphate to covalently modify the Cys thiol group of the Ras CAAX box with a farnesyl group (Reiss et al., Cell, 62:81 -88 (1990); Schaber et al., J. Biol Chem., 265: 14701-14704 (1990); Schafer et al., Science, 249:1133-1139 (1990); Marine et al., Proc. Natl. Acad. Sci USA, 87:7541-7545 (1990)).
  • Inhibition of farnesyl pyrophosphate biosynthesis by inhibiting HMG-CoA reductase blocks Ras membrane localization in cultured cells.
  • direct inhibition of farnesyl- protein transferase would be more specific and attended by fewer side effects than would occur with the required dose of a general inhibitor of isoprene biosynthesis.
  • FPTase farnesyl-protein transferase
  • FPP farnesyl diphosphate
  • Ras protein substrates
  • the peptide derived inhibitors that have been described are generally cysteine containing molecules that are related to the CAAX motif that is the signal for protein prenylation. (Schaber et al., ibid; Reiss et al., ibid; Reiss et al., PNAS, 88:732-736 (1991)).
  • Such inhibitors may inhibit protein prenylation while serving as alternate substrates for the farnesyl-protein transferase enzyme, or may be purely competitive inhibitors (U.S.
  • Patent 5,141 ,851 University of Texas; N.E. Kohl et al., Science, 260:1934-1937 (1993); Graham, et al., J. Med. Chem., 37, 725 (1994)).
  • deletion of the thiol from a CAAX derivative has been shown to dramatically reduce the inhibitory potency of the compound.
  • the thiol group potentially places limitations on the therapeutic application of FPTase inhibitors with respect to pharmacokinetics, pharmacodynamics and toxicity. Therefore, a functional replacement for the thiol is desirable.
  • transferase inhibitors are inhibitors of proliferation of vascular smooth muscle cells and are therefore useful in the prevention and therapy of arteriosclerosis and diabetic disturbance of blood vessels (JP H7- 112930).
  • an object of this invention to develop peptidomimetic compounds that do not have a thiol moiety, and that will inhibit farnesyl-protein transferase and thus, the post-translational farnesylation of proteins. It is a further object of this invention to develop chemotherapeutic compositions containing the compounds of this invention and methods for producing the compounds of this invention.
  • the present invention comprises peptidomimetic piperazine-containing compounds which inhibit the farnesyl-protein transferase.
  • the instant compounds lack a thiol moiety and thus offer unique advantages in terms of improved pharmacokinetic behavior in animals, prevention of thiol-dependent chemical reactions, such as rapid autoxidation and disulfide formation with endogenous thiols, and reduced systemic toxicity.
  • chemotherapeutic compositions containing these farnesyl transferase inhibitors and methods for their production are further contained in this invention.
  • the compounds of this invention are useful in the inhibition of farnesyl-protein transferase and the farnesylation of the oncogene protein Ras.
  • the inhibitors of farnesyl-protein transferase are illustrated by the formula A:
  • R 1 a is selected from:
  • substitutent on the substituted C 1 -C 6 alky is selected from unsubstituted or substituted aryl, heterocyclic, C 3 -C 10 cycloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, R 10 O-,
  • R 2 and R 3 are independently selected from: H; unsubstituted or substituted C 1 -8 alkyl, unsubstituted or substituted C 2-8 alkenyl, unsubstituted or substituted C 2-8 alkynyl, unsubstituted or substituted aryl, unsubstituted or substituted heterocycle, wherein the substituted group is substituted with one or more of:
  • R 2 and R 3 are attached to the same C atom and are combined to form (CH 2 ) u - wherein one of the carbon atoms is optionally replaced by a moiety selected from: O, S(O) m , -NC(O)-, and -N(COR 10 )- ;
  • R 4 is selected from H and CH 3 ; and any two of R 2 , R 3 and R 4 are optionally attached to the same carbon atom;
  • R 6 , R 7 and R 7a are independently selected from: H; C 1 -4 alkyl, C 3 -6 cycloalkyl, heterocycle, aryl, aroyl, heteroaroyl, arylsulfonyl, heteroarylsulfonyl, unsubstituted or substituted with:
  • R 6 and R 7 may be joined in a ring;
  • R 7 and R 7a may be joined in a ring;
  • R 6a is selected from: C 1 -4 alkyl, C 3-6 cycloalkyl, heterocycle, aryl, unsubstituted or substituted with:
  • R 8 is independently selected from:
  • cyanophenyl heterocycle, C 3 -C 10 cycloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, perfluoroalkyl, F, Cl, Br, R 10 O-, R 1 1 S(O) m -, R 10 C(O)NH-, (R 10 ) 2 NC(O)-, R 10 2 N- C(NR 10 )-, CN, R 10 C(O)-, N 3 , -N(R 10 ) 2 , or R 10 OC(O)NH-;
  • R 9 is selected from:
  • R 10 is independently selected from hydrogen, C 1 -C 6 alkyl, benzyl and aryl; R 1 1 is independently selected from C 1 -C 6 alkyl and aryl;
  • G is selected from H 2 and O;
  • V is selected from: a) hydrogen
  • V is not hydrogen if A 1 is S(O) m and V is not hydrogen if A 1 is a bond, n is 0 and A 2 is S(O) m ,
  • W is a heterocycle
  • Z is selected from: a unsubstituted or substituted group selected from aryl or heteroaryl, wherein the substituted group is substituted with one or more of the following:
  • n 0, 1 , 2, 3 or 4;
  • q 1 or 2;
  • r is 0 to 5, provided that r is 0 when V is hydrogen; and s is 0 or 1 ; or the pharmaceutically acceptable salts thereof.
  • R 1 a is selected from:
  • substitutent on the substituted C 1 -C 6 alkyl is selected from unsubstituted or substituted aryl, heterocyclic, C 3 -C 10 cycloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, R 10 O-, R 1 1 S(O) m -, R 10 C(O)NR 10 -, (R 10 ) 2 NC(O)-, R 10 2 N- C(NR 10 )-, CN, R 10 C(O)-, N 3 , -N(R 10 ) 2 , and R 11 OC(O)- NR 10 -;
  • R 2 and R 3 are independently selected from: H; unsubstituted or
  • R 2 and R 3 are attached to the same C atom and are combined to form (CH 2 ) u - wherein one of the carbon atoms is optionally replaced by a moiety selected from: O, S(O) m , -NC(O)-, and -N(COR 10 )- ;
  • R 4 is selected from H and CH 3 ; and any two of R 2 , R 3 and R 4 are optionally attached to the same carbon atom;
  • R 6 , R 7 and R 7a are independently selected from: H; C 1 -4 alkyl, C 3-6 cycloalkyl, heterocycle, aryl, aroyl, heteroaroyl, arylsulfonyl, heteroarylsulfonyl, unsubstituted or substituted with:
  • R 7 and R 7a may be joined in a ring;
  • R 6a is selected from: C 1 -4 alkyl, C 3-6 cycloalkyl, heterocycle, aryl, unsubstituted or substituted with:
  • R 8 is independently selected from:
  • cyanophenyl heterocycle, C 3 -C 10 cycloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, perfluoroalkyl, F, Cl, Br, R 10 O-, R 1 1 S(O) m -, R 10 C(O)NH-, (R 10 ) 2 NC(O)-, R 10 2 N- C(NR 10 )-, CN, R 10 C(O)-, N 3 , -N(R 10 ) 2 , or R 10 OC(O)NH-;
  • R 9 is selected from:
  • R 10 is independently selected from hydrogen, C 1 -C 6 alkyl, benzyl and aryl; R 1 1 is independently selected from C 1 -C 6 alkyl and aryl;
  • V is selected from:
  • V is not hydrogen if A 1 is S(O) m and V is not hydrogen if A 1 is a bond, n is 0 and A 2 is S(O) m ;
  • W is a heterocycle
  • Z is selected from: a unsubstituted or substituted group selected from aryl or heteroaryl, wherein the substituted group is substituted with one or more of the following:
  • n 0, 1 , 2, 3 or 4;
  • q 1 or 2;
  • r is 0 to 5, provided that r is 0 when V is hydrogen; and s is 1 ; or the pharmaceutically acceptable salts thereof.
  • the inhibitors of farnesyl-protein transferase are illustrated by the formula A: V
  • R 1 a is independently selected from: hydrogen or C 1 -C 6 alkyl
  • R 1 b is independently selected from:
  • substitutent on the substituted C 1 -C 6 alkyl is selected from unsubstituted or substituted aryl, heterocycle, cycloalkyl, alkenyl, R 10 O- and -N(R 10 ) 2 ;
  • R 3 and R 4 are independently selected from H and CH 3 ;
  • R 2 is H
  • R 6 , R 7 and R 7a are independently selected from:
  • R 6a is selected from:
  • R 8 is independently selected from:
  • perfluoroalkyl F, Cl, R 10 O-, R 10 C(O)NR 10 -, CN, NO 2 ,
  • R 9 is selected from:
  • perfluoroalkyl F, Cl, R 10 O-, R 1 1 S(O) m -, R 10 C(O)NR 1 0 -, CN, (R 10 ) 2 N-C(NR 10 )-, R 10 C(O)-, -N(R 10 ) 2 , or
  • R 1 1 OC(O)NR 10 -;
  • R 10 is independently selected from hydrogen, C 1 -C 6 alkyl, benzyl and aryl;
  • R 1 1 is independently selected from C 1 -C 6 alkyl and aryl;
  • heterocycle selected from pyrrolidinyl, imidazolyl,
  • V is not hydrogen if A 1 is S(O) m and V is not hydrogen if A 1 is a bond, n is 0 and A 2 is S(O) m ;
  • W is a heterocycle selected from pyrrolidinyl, imidazolyl, pyridinyl, thiazolyl, pyridonyl, 2-oxopiperidinyl, indolyl, quinolinyl, or isoquinolinyl;
  • Z is mono- or bicyclic aryl, mono- or bicyclic heteroaryl, mono- or bicyclic arylmethyl, mono- or bicyclic heteroarylmethyl, mono- or bicyclic arylsulfonyl, mono- or bicyclic heteroarylsulfonyl, unsubstituted or substituted with one or two of the following: 1 ) C 1 -4 alkyl, unsubstituted or substituted with:
  • n 0, 1, 2, 3 or 4;
  • p 0, 1 , 2, 3 or 4;
  • r is 0 to 5, provided that r is 0 when V is hydrogen;
  • s is 0 or 1 ;
  • the inhibitors of farnesyl-protein transferase are illustrated by the formula C:
  • R 3 and R 4 are independently selected from H and CH 3 ;
  • R 2 is H
  • R 6 and R 7 are independently selected from:
  • R 6a is selected from:
  • R 8 is independently selected from:
  • perfluoroalkyl F, Cl, R 10 O-, R 10 C(O)NR 10 -, CN, NO 2 , (R 10 ) 2 N-C(NR 10 )-, R 10 C(O)-, -N(R 10 ) 2 , or R 1 1 OC(O)NR 10 -, and
  • R 10 is independently selected from hydrogen, C 1 -C 6 alkyl, benzyl and aryl;
  • R 1 1 is independently selected from C 1 -C 6 alkyl and aryl;
  • Z is mono- or bicyclic aryl, mono- or bicyclic heteroaryl, mono- or bicyclic arylmethyl, mono- or bicyclic heteroarylmethyl, mono- or bicyclic arylsulfonyl, mono- or bicyclic heteroarylsulfonyl, unsubstituted or substituted with one or two of the following: 1 ) C 1 -4 alkyl, unsubstituted or substituted with a) C 1 -4 alkoxy,
  • R 2 , R 3 and R 4 are independently selected from: hydrogen or C 1 -C 6 alkyl
  • Z is mono- or bicyclic aryl, mono- or bicyclic heteroaryl, mono- or bicyclic arylmethyl, mono- or bicyclic
  • heteroarylmethyl mono- or bicyclic arylsulfonyl, mono- or bicyclic heteroarylsulfonyl, unsubstituted or substituted with one or two of the following:
  • the preferred compounds of this invention are as follows: 4-[1 -(4-methoxybenzyl)imidazol-2-yl]-1-(2-chlorophenyl)-piperazin-2- one and
  • the compounds of the present invention may have asymmetric centers and occur as racemates, racemic mixtures, and as individual diastereomers, with all possible isomers, including optical isomers, being included in the present invention.
  • any variable e.g. aryl, heterocycle, R 1 , R 2 etc.
  • its definition on each occurence is independent at every other occurence.
  • combinations of substituents/or variables are permissible only if such combinations result in stable compounds.
  • alkyl is intended to include both branched and straight-chain saturated aliphatic hydrocarbon groups having the specified number of carbon atoms; “alkoxy” represents an alkyl group of indicated number of carbon atoms attached through an oxygen bridge.
  • Halogen or “halo” as used herein means fluoro, chloro, bromo and iodo.
  • aryl is intended to mean any stable monocyclic or bicyclic carbon ring of up to 7 members in each ring, wherein at least one ring is aromatic.
  • aryl elements include phenyl, naphthyl, tetrahydronaphthyl, indanyl, biphenyl, phenanthryl, anthryl or acenaphthyl.
  • heterocycle or heterocyclic represents a stable 5- to 7-membered monocyclic or stable 8- to 1 1 - membered bicyclic heterocyclic ring which is either saturated or unsaturated, and which consists of carbon atoms and from one to four heteroatoms selected from the group consisting of N, O, and S, and including any bicyclic group in which any of the above-defined heterocyclic rings is fused to a benzene ring.
  • the heterocyclic ring may be attached at any heteroatom or carbon atom which results in the creation of a stable structure.
  • heterocyclic elements include, but are not limited to, azepinyl, benzimidazolyl, benzisoxazolyl, benzofurazanyl, benzopyranyl, benzothiopyranyl, benzofuryl,
  • heteroaryl is intended to mean any stable monocyclic or bicyclic carbon ring of up to 7 members in each ring, wherein at least one ring is aromatic and wherein from one to four carbon atoms are replaced by heteroatoms selected from the group consisting of N, O, and S.
  • heterocyclic elements include, but are not limited to, benzimidazolyl, benzisoxazolyl, benzofurazanyl, benzopyranyl, benzothiopyranyl, benzofuryl,
  • the substituted group intended to mean a substituted C 1 -8 alkyl, substituted C 2-8 alkenyl, substituted C 2-8 alkynyl, substituted aryl or substituted heterocycle from which the substitutent(s) R 2 and R 3 are selected.
  • the substituted C 1 -8 alkyl, substituted C 3-6 cycloalkyl, substituted aroyl, substituted aryl, substituted heteroaroyl, substituted arylsulfonyl, substituted heteroarylsulfonyl and substituted heterocycle include moieties containing from 1 to 3 substitutents in addition to the point of attachment to the rest of the compound.
  • such substitutents are selected from the group which includes but is not limited to F, Cl, Br, CF 3 , NH 2 , N(C 1 -C 6 alkyl) 2 , NO 2 , CN, (C 1 -C 6 alkyl)O-, -OH, (C 1 -C 6 alkyl)S(O) m -, (C 1 -C 6 alkyl)C(O)NH-, H 2 N-C(NH)-, (C 1 -C 6 alkyl)C(O)-, (C 1 -C 6 alkyl)OC(O)-, N 3 ,(C 1 -C 6 alkyl)OC(O)NH-, phenyl, pyridyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, thienyl, furyl, isothiazolyl and C 1 -C 20 alkyl.
  • cyclic moieties When R 2 and R 3 are combined to form - (CH 2 ) u -, cyclic moieties are formed. Examples of such cyclic moieties include, but are not limited to:
  • cyclic moieties may optionally include a heteroatom(s).
  • heteroatom-containing cyclic moieties include, but are not limited to:
  • R 1 a is selected from: hydrogen, -N(R 10 ) 2 , R 10 C(O)NR 10 - or unsubstituted or substituted C 1 -C 6 alkyl wherein the substituent on the substituted C 1 -C 6 alkyl is selected from unsubstituted or substituted phenyl, -N(R 10 ) 2 , R 10 O- and R 10 C(O)NR 10 -.
  • R 2 is selected from: H, and an unsubstituted or substituted group, the group selected from C 1 -8 alkyl, C 2-8 alkenyl and C 2-8 alkynyl;
  • substituted group is substituted with one or more of:
  • R 3 is selected from: hydrogen and C 1 -C 6 alkyl.
  • R 4 is hydrogen
  • R 6 , R 7 and R 7a is selected from: hydrogen, unsubstituted or substituted C 1 -C 6 alkyl, unsubstituted or substituted aryl and unsubstituted or substituted cycloalkyl.
  • R 6a is unsubstituted or substituted C 1 -C 6 alkyl, unsubstituted or substituted aryl and unsubstituted or substituted cycloalkyl.
  • R 9 is hydrogen or methyl. Most preferably, R 9 is hydrogen.
  • R 10 is selected from H, C 1 -C 6 alkyl and benzyl.
  • a 1 and A 2 are independently selected from: a bond, -C(O)NR 10 -, -NR 10 C(O)-, O, -N(R 10 )-, -S(O) 2 N(R 10 )- and- N(R 10 )S(O) 2 -.
  • V is selected from hydrogen, heterocycle and aryl. More preferably, V is phenyl.
  • Y is selected from unsubstituted or substituted phenyl, unsubstituted or substituted naphthyl, unsubstituted or
  • Y is unsubstituted or substituted phenyl.
  • Z is selected from unsubstituted or substituted phenyl, unsubstituted or substituted naphthyl, unsubstituted or
  • Z is unsubstituted or substituted phenyl.
  • W is selected from imidazolinyl, imidazolyl, oxazolyl, pyrazolyl, pyrrolidinyl, thiazolyl and pyridyl. More preferably, W is selected from imidazolyl and pyridyl.
  • n and r are independently 0, 1. or 2.
  • s is 0.
  • q is 1.
  • any substituent or variable e.g., R 1 a , R 9 , n, etc.
  • -N(R 10 ) 2 represents -NHH, -NHCH 3 , -NHC 2 H 5 , etc.
  • substituents and substitution patterns on the compounds of the instant invention can be selected by one of ordinary skill in the art to provide compounds that are chemically stable and that can be readily synthesized by techniques known in the art, as well as those methods set forth below, from readily available starting materials.
  • the pharmaceutically acceptable salts of the compounds of this invention include the conventional non-toxic salts of the compounds of this invention as formed, e.g., from non-toxic inorganic or organic acids.
  • such conventional non-toxic salts include those derived from inorganic acids such as hydrochloric, hydrobromic, sulfuric, sulfamic, phosphoric, nitric and the like: and the salts prepared from organic acids such as acetic, propionic, succinic, glycolic, stearic, lactic, malic, tartaric, citric, ascorbic, pamoic, maleic, hydroxymaleic, phenylacetic, glutamic, benzoic, salicylic, sulfanilic, 2-acetoxy-benzoic, fumaric, toluenesulfonic, methanesulfonic, ethane disulfonic, oxalic, isethionic, trifluoroacetic and the like.
  • the pharmaceutically acceptable salts of the compounds of this invention can be synthesized from the compounds of this invention which contain a basic moiety by conventional chemical methods.
  • the salts are prepared either by ion exchange chromato graph y or by reacting the free base with stoichiometric amounts or with an excess of the desired salt-forming inorganic or organic acid in a suitable solvent or various combinations of solvents.
  • Reactions used to generate the compounds of this invention are prepared by employing reactions as shown in the Schemes 1-22, in addition to other standard manipulations such as ester hydrolysis, cleavage of protecting groups, etc., as may be known in the literature or exemplified in the experimental procedures.
  • Boc-protected amino acids I available commercially or by procedures known to those skilled in the art, can be coupled to N-aryl amino acid esters using a variety of dehydrating agents such as DCC (dicyclohexycarbodiimide) or EDC ⁇ HCl (1-ethyl-3-(3-dimethyl- aminopropyl)carbodiimide hydrochloride) in a solvent such as methyl- ene chloride , chloroform, dichloroethane, or in dimethylformamide.
  • dehydrating agents such as DCC (dicyclohexycarbodiimide) or EDC ⁇ HCl (1-ethyl-3-(3-dimethyl- aminopropyl)carbodiimide hydrochloride) in a solvent such as methyl- ene chloride , chloroform, dichloroethane, or in dimethylformamide.
  • the product II is then deprotected with acid, for example hydrogen chloride in chloroform or ethyl acetate, or trifluoroacetic acid in methylene chloride, and cyclized under weakly basic conditions to give the diketopiperazine III. Reduction of III with lithium aluminum hydride in refluxing ether gives the piperazine IV.
  • acid for example hydrogen chloride in chloroform or ethyl acetate, or trifluoroacetic acid in methylene chloride
  • Scheme 2 illustrates the incorporation of a hetercyclic moiety on the remaining unsubstituted nitrogen of the piperazine.
  • intermediate IV is treated with the isothiocyanate V, followed by methylation provides the thioimidate VI.
  • Scheme 2a illustrates incorporation of the preferred imidazolyl moiety on a nitrogen of a piperazinone.
  • a suitably substituted aniline is N-alkylated sequentially with a protected
  • acetaldehyde and a haloacetyl moiety Reductive alkylation with an aminoimidazole, followed by base treatment provides the 1 -phenyl- 4-imidazolyl-piperazin-2-one. The imidazolyl can then be substituted with a suitably substituted benzyl moiety.
  • XII is illustrated in Scheme 3.
  • a suitably substituted benzaldehyde is coupled to 4-chloropyridine to provide the pyridylphenylmethanol IX. Removal of the hydroxyl moiety followed by oxidation of the pyridinyl nitrogen provide intermediate X. Intermediate X is then reacted with the piperazine IV to provide the instant compound XII.
  • Reaction Scheme 5 provides an illustrative example the synthesis of compounds of the instant invention wherein the substituents R 2 and R 3 are combined to form - (CH 2 )u -.
  • 1-aminocyclohexane-1-carboxylic acid XVI can be converted to the spiropiperazine XVIII essentially according to the procedures outlined in Schemes 1.
  • the piperazine intermediate XVIII can be carried on to final products as described in Schemes 2-3.
  • Scheme 6 illustrates the use of an optionally substituted homoserine lactone XXI to prepare a Boc-protected piperazinone XXII.
  • Intermediate XXII may be reduced, deprotected and reductively alkylated or acylated as illustrated in the previous Schemes.
  • intermediate XXIII may be mesylated and displaced by a suitable nucleophile, such as the sodium salt of ethane thiol, to provide an intermediate XXIV.
  • Intermediate XXIII may also be oxidized to provide the carboxylic acid on intermediate XXV, which can be utilized form an ester or amide moiety.
  • Amino acids of the general formula XXVI which have a sidechain not found in natural amino acids may be prepared by the reactions illustrated in Scheme 18 starting with the readily prepared imine XXVII.
  • the instant compounds are useful as pharmaceutical a gents for mammals, especially for humans. These compounds may be administered to patients for use in the treatment of cancer.
  • Examples of the type of cancer which may be treated with the compounds of this invention include, but are not limited to, colorectal carcinoma, exocrine pancreatic carcinoma, myeloid leukemias and neurological tumors. Such tumors may arise by mutations in the ras genes themselves, mutations in the proteins that can regulate Ras activity (i.e.,
  • NF-1 neurofibromin
  • the compounds of the instant invention inhibit farnesyl- protein transferase and the farnesylation of the oncogene protein Ras.
  • the instant compounds may also inhibit tumor angiogenesis, thereby affecting the growth of tumors (J. Rak et al. Cancer Research, 55:4575- 4580 (1995)).
  • the compounds of this invention are also useful for inhibiting other proliferative diseases, both benign and malignant, wherein Ras proteins are aberrantly activated as a result of oncogenic mutation in other genes (i.e., the Ras gene itself is not activated by mutation to an oncogenic form) with said inhibition being accomplished by the administration of an effective amount of the compounds of the invention to a mammal in need of such treatment.
  • a component of NF-1 is a benign proliferative disorder.
  • the instant compounds may also be useful in the treatment of certain viral infections, in particular in the treatment of hepatitis delta and related viruses (J.S. Glenn et al. Science, 256:1331-1333 (1992).
  • the compounds of the instant invention are also useful in the prevention of restenosis after percutaneous transluminal coronary angioplasty by inhibiting neointimal formation (C. Indolfi et al. Nature medicine, 1:541-545(1995).
  • the instant compounds may also be useful in the treatment and prevention of polycystic kidney disease (D.L. Schaffner et al. American Journal of Pathology, 142: 1051 -1060 (1993) and B. Cowley, Jr. et al.FASEB Journal, 2:A3160 (1988)).
  • the instant compounds may also be useful for the treatment of fungal infections.
  • the compounds of this invention may be administered to mammals, preferably humans, either alone or, preferably, in combination with pharmaceutically acceptable carriers or diluents, optionally with known adjuvants, such as alum, in a pharmaceutical composition, according to standard pharmaceutical practice.
  • the compounds can be administered orally or parenterally, including the intravenous, intramuscular, intraperitoneal, subcutaneous, rectal and topical routes of administration.
  • the selected compound may be administered, for example, in the form of tablets or capsules, or as an aqueous solution or suspension.
  • carriers which are commonly used include lactose and com starch, and lubricating agents, such as magnesium stearate, are commonly added.
  • useful diluents include lactose and dried com starch.
  • aqueous suspensions are required for oral use, the active ingredient is combined with emulsifying and suspending agents. If desired, certain sweetening and/or flavoring agents may be added.
  • sterile solutions of the active ingredient are usually prepared, and the pH of the solutions should be suitably adjusted and buffered.
  • the total concentration of solutes should be controlled in order to render the preparation isotonic.
  • the compounds of the instant invention may also be co- administered with other well known therapeutic agents that are selected for their particular usefulness against the condition that is being treated.
  • the instant compounds may be useful in combination with known anti-cancer and cytotoxic agents.
  • the instant compounds may be useful in combination with agents that are effective in the treatment and prevention of NF- 1 , restenosis, polycystic kidney disease, infections of hepatitis delta and related viruses and fungal infections.
  • Such combination products employ the compounds of this invention within the dosage range described below and the other pharmaceutically active agent(s) within its approved dosage range.
  • Compounds of the instant invention may alternatively be used sequentially with known pharmaceutically acceptable agent(s) when a combination formulation is inappropriate.
  • the present invention also encompasses a pharmaceutical composition useful in the treatment of cancer, comprising the
  • compositions of this invention include aqueous solutions comprising compounds of this invention and pharmacologically acceptable carriers, e.g., saline, at a pH level, e.g., 7.4.
  • pharmacologically acceptable carriers e.g., saline
  • the solutions may be introduced into a patient's blood-stream by local bolus injection.
  • composition is intended to encompass a product comprising the specified ingredients in the specific amounts, as well as any product which results, directly or indirectly, from combination of the specific ingredients in the specified amounts.
  • the daily dosage will normally be determined by the prescribing physician with the dosage generally varying according to the age, weight, and response of the individual patient, as well as the severity of the patient's symptoms.
  • a suitable amount of compound is administered to a mammal undergoing treatment for cancer.
  • Administration occurs in an amount between about 0.1 mg/kg of body weight to about 60 mg/kg of body weight per day, preferably of between 0.5 mg/kg of body weight to about 40 mg/kg of body weight per day.
  • the compounds of the instant invention are also useful as a component in an assay to rapidly determine the presence and quantity of farnesyl-protein transferase (FPTase) in a composition.
  • FPTase farnesyl-protein transferase
  • mixtures which comprise a known substrate of FPTase (for example a tetrapeptide having a cysteine at the amine terminus) and farnesyl pyrophosphate and, in one of the mixtures, a compound of the instant invention.
  • FPTase for example a tetrapeptide having a cysteine at the amine terminus
  • farnesyl pyrophosphate for example a tetrapeptide having a cysteine at the amine terminus
  • the chemical content of the assay mixtures may be determined by well known immunological, radiochemical or chromatographic techniques. Because the compounds of the instant invention are selective inhibitors of FPTase, absence or quantitative reduction of the amount of substrate in the assay mixture without the compound of the instant invention relative to the presence of the unchanged substrate in the assay containing the instant compound is indicative of the presence of
  • potent inhibitor compounds of the instant invention may be used in an active site titration assay to determine the quantity of enzyme in the sample.
  • a series of samples composed of aliquots of a tissue extract containing an unknown amount of farnesyl- protein transferase, an excess amount of a known substrate of FPTase (for example a tetrapeptide having a cysteine at the amine terminus) and farnesyl pyrophosphate are incubated for an appropriate period of time in the presence of varying concentrations of a compound of the instant invention.
  • concentration of a sufficiently potent inhibitor i.e., one that has a Ki substantially smaller than the concentration of enzyme in the assay vessel
  • concentration of a sufficiently potent inhibitor i.e., one that has a Ki substantially smaller than the concentration of enzyme in the assay vessel
  • Step A Synthesis of 4-[5-(4-methoxyphenyl)-2-thia-4-aza-pent-3- en-3-yl]-1-(2-chlorophenyl)-piperazin-2-one
  • Step B 4-[1-(4-methoxybenzyl)-imidazol-2-yl]-1 -(2-chlorophenyl)- piperazin-2-one.
  • step A The product of step A is treated with aminoacetaldehyde dimethyl acetal (1.5 molar equivalents) in isopropanol.
  • the intermediate guanidine is refluxed in isopropanol and hydrochloric acid to give the title compound.
  • Step A 4-Chloro-3-(4-methoxybenzyl)pyridine.
  • 4-Chloropyridine is treated sequentially with LDA (1.1 molar equivalents) and 4-methoxybenzaldehyde (1 molar equivalent).
  • LDA 1.1 molar equivalents
  • 4-methoxybenzaldehyde 1 molar equivalent.
  • the resulting carbinol is isolated and deoxygenated with triethylsilane (10 molar equivalents) and 50% trifluoroacetic acid in methylene chloride to provide the title compound.
  • Step B 4-Chloro-3-(4-methoxybenzyl)pyridine-N-oxide
  • step A The product of step A is oxidized to the title compound with m-chloroperoxybenzoic acid (1.1 molar equivalents).
  • Step C 4-[3-(4-methoxybenzyl)pyrid-4-yl]-1 -(2-chlorophenyl)- piperazin-2-one.
  • step B The product of step B is heated with 1-(2-chIorophenyl)- piperazin-2-one (1 molar equivalent).
  • the crude N-oxide of 4-[3-(4- methoxybenzyl)pyrid-4-yl]-1 -(2-chlorophenyl)-piperazin-2-one is deoxygenated by treatment with triphenylphosphine (2 molar
  • Bovine FPTase was assayed in a volume of 100 ⁇ l containing 100 mM N-(2- hydroxy ethyl) piperazine-N'-(2-ethane sulfonic acid) (HEPES), pH 7.4, 5 mM MgCl 2 , 5 mM dithiothreitol (DTT), 100 mM [ 3 H]-farnesyl diphosphate ([ 3 H]-FPP; 740 CBq/mmol, New England Nuclear), 650 nM Ras-CVLS and 10 ⁇ g/ml FPTase at 31 °C for 60 min. Reactions were initiated with FPTase and stopped with 1 ml of 1.0 M HCL in ethanol.
  • Precipitates were collected onto filter-mats using a TomTec Mach II cell harvestor, washed with 100% ethanol, dried and counted in an LKB ⁇ - plate counter.
  • the assay was linear with respect to both substrates, FPTase levels and time; less than 10% of the [ 3 H]-FTP was utilized during the reaction period.
  • Purified compounds were dissolved in 100% dimethyl sulfoxide (DMSO) and were diluted 20-fold into the assay. Percentage inhibition is measured by the amount of
  • the compounds of the instant invention are tested for inhibitory activity against human FPTase by the assay described above.
  • the cell line used in this assay is a v-ras line derived from either Ratl or NIH3T3 cells, which expressed viral Ha-ras p21.
  • the assay is performed essentially as described in DeClue, J.E. et al., Cancer Research 51 :712-717. (1991 ). Cells in 10 cm dishes at 50-75% confluency are treated with the test compound (final concentration of solvent, methanol or dimethyl sulfoxide, is 0.1%).
  • the cells After 4 hours at 37°C, the cells are labelled in 3 ml methionine-free DMEM supplemeted with 10% regular DMEM, 2% fetal bovine serum and 400 mCi[ 35 S]methionine (1000 Ci/mmol). After an additional 20 hours, the cells are lysed in 1 ml lysis buffer (1 % NP40/20 mM HEPES, pH 7.5/5 mM MgCl 2 /1mM DTT/10 mg/ml aprotinen/2 mg/ml leupeptin/2 mg/ml antipain/0.5 mM PMSF) and the lysates cleared by centrifugation at 100,000 x g for 45 min.
  • 1 ml lysis buffer (1 % NP40/20 mM HEPES, pH 7.5/5 mM MgCl 2 /1mM DTT/10 mg/ml aprotinen/2 mg/ml leupeptin/2 mg/ml antipain/0.5 mM PMSF
  • Aliqqots of lysates containing equal numbers of acid-precipitable counts are bought to 1 ml with IP buffer (lysis buffer lacking DTT) and immunoprecipitated with the ras-specific monoclonal antibody Y13-259 (Furth, M.E. et al., J. Virol. 43:294-304, (1982)). Following a 2 hour antibody incubation at 4°C, 200 ml of a 25% suspension of protein A-Sepharose coated with rabbit anti rat IgG is added for 45 min.
  • the immunoprecipitates are washed four times with IP buffer (20 nM HEPES, pH 7.5/1 mM EDTA/1 % Triton X- 100.0.5% deoxycholate/0.1 %/SDS/0.1 M NaCl) boiled in SDS-PAGE sample buffer and loaded on 13% acrylamide gels. When the dye front reached the bottom, the gel is fixed, soaked in Enlightening, dried and autoradiographed. The intensities of the bands corresponding to farnesylated and nonfarnesylated ras proteins are compared to IP buffer (20 nM HEPES, pH 7.5/1 mM EDTA/1 % Triton X- 100.0.5% deoxycholate/0.1 %/SDS/0.1 M NaCl) boiled in SDS-PAGE sample buffer and loaded on 13% acrylamide gels. When the dye front reached the bottom, the gel is fixed, soaked in Enlightening, dried and autoradiographed. The intensities of the bands corresponding to
  • Rat 1 cells transformed with either v-ras, v-raf, or v-mos are seeded at a density of 1 x 10 4 cells per plate (35 mm in diameter) in a 0.3% top agarose layer in medium A (Dulbecco's modified Eagle's medium supplemented with 10% fetal bovine serum) over a bottom agarose layer (0.6%). Both layers contain 0.1 % methanol or an appropriate concentration of the instant compound (dissolved in methanol at 1000 times the final concentration used in the assay).
  • the cells are fed twice weekly with 0.5 ml of medium A containing 0.1 % methanol or the concentration of the instant compound. Photomicrographs are taken 16 days after the cultures are seeded and comparisons are made.

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Abstract

The present invention is directed to compounds which inhibit farnesyl-protein transferase (FTase) and the farnesylation of the oncogene protein Ras. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for inhibiting farnesyl-protein transferase and the farnesylation of the oncogene protein Ras.

Description

TITLE OF THE INVENTION
INHIBITORS OF FARNESYL-PROTEIN TRANSFERASE
BACKGROUND OF THE INVENTION
The Ras proteins (Ha-Ras, Ki4a-Ras, Ki4b-Ras and N-Ras) are part of a signalling pathway that links cell surface growth factor receptors to nuclear signals initiating cellular proliferation. Biological and biochemical studies of Ras action indicate that Ras functions like a G-regulatory protein. In the inactive state, Ras is bound to GDP. Upon growth factor receptor activation Ras is induced to exchange GDP for GTP and undergoes a conformational change. The GTP-bound form of Ras propagates the growth stimulatory signal until the signal is terminated by the intrinsic GTPase activity of Ras, which returns the protein to its inactive GDP bound form (D.R. Lowy and D.M.
Willumsen, Ann. Rev. Biochem. 62:851-891 (1993)). Mutated ras genes (Ha-ras, Ki4a-ras, Ki4b-ras and N-ras) are found in many human cancers, including colorectal carcinoma, exocrine pancreatic carcinoma, and myeloid leukemias. The protein products of these genes are defective in their GTPase activity and constitutively transmit a growth stimulatory signal.
Ras must be localized to the plasma membrane for both normal and oncogenic functions. At least 3 post-translational modifications are involved with Ras membrane localization, and all 3 modifications occur at the C-terminus of Ras. The Ras C-terminus contains a sequence motif termed a "CAAX" or "Cys-Aaa1-Aaa2-Xaa" box (Cys is cysteine, Aaa is an aliphatic amino acid, the Xaa is any amino acid) (Willumsen et al., Nature 310:583-586 (1984)). Depending on the specific sequence, this motif serves as a signal sequence for the enzymes farnesyl-protein transferase or geranylgeranyI-protein transferase, which catalyze the alkylation of the cysteine residue of the CAAX motif with a C15 or C20 isoprenoid, respectively. (S. Clarke., Ann. Rev. Biochem. 61 :355-386 (1992); W.R. Schafer and J. Rine, Ann. Rev. Genetics 30:209-231 (1992)). The Ras protein is one of several proteins that are known to undergo post-translational farnesylation. Other farnesylated proteins include the Ras-related GTP-binding proteins such as Rho, fungal mating factors, the nuclear lamins, and the gamma subunit of transducin. James, et al., J. Biol. Chem. 269, 14182 (1994) have identified a peroxisome associated protein Pxf which is also farnesylated. James, et al., have also suggested that there are farnesylated proteins of unknown structure and function in addition to those listed above.
Inhibition of farnesyl-protein transferase has been shown to block the growth of Ras -transformed cells in soft agar and to modify other aspects of their transformed phenotype. It has also been demonstrated that certain inhibitors of farnesyl-protein transferase selectively block the processing of the Ras oncoprotein intracellularly (N.E. Kohl et al., Science, 260:1934-1937 (1993) and G.L. James et al., Science, 260:1937-1942 (1993). Recently, it has been shown that an inhibitor of farnesyl-protein transferase blocks the growth of ras-dependent tumors in nude mice (N.E. Kohl et al., Proc. Natl. Acad. Sci U.S.A., 91 :9141 - 9145 (1994) and induces regression of mammary and salivary
carcinomas in ras transgenic mice (N.E. Kohl et al., Nature Medicine, 1 :792-797 (1995).
Indirect inhibition of farnesyl-protein transferase i n vivo has been demonstrated with lovastatin (Merck & Co., Rahway, NJ) and compactin (Hancock et al., ibid; Casey et al., ibid; Schafer et al., Science 245:319 (1989)). These drugs inhibit HMG-CoA reductase, the rate limiting enzyme for the production of polyisoprenoids including farnesyl pyrophosphate. Farnesyl-protein transferase utilizes farnesyl pyrophosphate to covalently modify the Cys thiol group of the Ras CAAX box with a farnesyl group (Reiss et al., Cell, 62:81 -88 (1990); Schaber et al., J. Biol Chem., 265: 14701-14704 (1990); Schafer et al., Science, 249:1133-1139 (1990); Marine et al., Proc. Natl. Acad. Sci USA, 87:7541-7545 (1990)). Inhibition of farnesyl pyrophosphate biosynthesis by inhibiting HMG-CoA reductase blocks Ras membrane localization in cultured cells. However, direct inhibition of farnesyl- protein transferase would be more specific and attended by fewer side effects than would occur with the required dose of a general inhibitor of isoprene biosynthesis.
Inhibitors of farnesyl-protein transferase (FPTase) have been described in two general classes. The first are analogs of farnesyl diphosphate (FPP), while the second class of inhibitors is related to the protein substrates (e.g., Ras) for the enzyme. The peptide derived inhibitors that have been described are generally cysteine containing molecules that are related to the CAAX motif that is the signal for protein prenylation. (Schaber et al., ibid; Reiss et al., ibid; Reiss et al., PNAS, 88:732-736 (1991)). Such inhibitors may inhibit protein prenylation while serving as alternate substrates for the farnesyl-protein transferase enzyme, or may be purely competitive inhibitors (U.S.
Patent 5,141 ,851 , University of Texas; N.E. Kohl et al., Science, 260:1934-1937 (1993); Graham, et al., J. Med. Chem., 37, 725 (1994)). In general, deletion of the thiol from a CAAX derivative has been shown to dramatically reduce the inhibitory potency of the compound. However, the thiol group potentially places limitations on the therapeutic application of FPTase inhibitors with respect to pharmacokinetics, pharmacodynamics and toxicity. Therefore, a functional replacement for the thiol is desirable.
It has recently been reported that farnesyl-protein
transferase inhibitors are inhibitors of proliferation of vascular smooth muscle cells and are therefore useful in the prevention and therapy of arteriosclerosis and diabetic disturbance of blood vessels (JP H7- 112930).
It has recently been disclosed that certain tricyclic
compounds which optionally incorporate a piperidine moiety are inhibitors of FPTase (WO 95/10514, WO 95/10515 and WO 95/10516). Imidazole-containing inhibitors of farnesyl protein transferase have also been disclosed (WO 95/09001 and EP 0 675 112 Al).
It is, therefore, an object of this invention to develop peptidomimetic compounds that do not have a thiol moiety, and that will inhibit farnesyl-protein transferase and thus, the post-translational farnesylation of proteins. It is a further object of this invention to develop chemotherapeutic compositions containing the compounds of this invention and methods for producing the compounds of this invention.
SUMMARY OF THE INVENTION
The present invention comprises peptidomimetic piperazine-containing compounds which inhibit the farnesyl-protein transferase. The instant compounds lack a thiol moiety and thus offer unique advantages in terms of improved pharmacokinetic behavior in animals, prevention of thiol-dependent chemical reactions, such as rapid autoxidation and disulfide formation with endogenous thiols, and reduced systemic toxicity. Further contained in this invention are chemotherapeutic compositions containing these farnesyl transferase inhibitors and methods for their production.
The compounds of this invention are illustrated by the formulas A and B:
Figure imgf000006_0001
DETAILED DESCRIPTION OF THE INVENTION
The compounds of this invention are useful in the inhibition of farnesyl-protein transferase and the farnesylation of the oncogene protein Ras. In a first embodiment of this invention, the inhibitors of farnesyl-protein transferase are illustrated by the formula A:
Figure imgf000007_0001
wherein:
R 1 a is selected from:
a) hydrogen,
b) aryl, heterocycle, C3-C10 cycloalkyl, C2-C6 alkenyl,
C2-C6 alkynyl, R10O-, R1 1 S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N-C(NR10)-, CN, NO2, R10C(O)-, N3, -N(R10)2, or R1 1OC(O)NR10-,
c) unsubstituted or substituted C1 -C6 alkyl wherein the
substitutent on the substituted C1 -C6 alky] is selected from unsubstituted or substituted aryl, heterocyclic, C3-C10 cycloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, R10O-,
R1 1S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N- C(NR10)-, CN, R10C(O)-, N3, -N(R10)2, and R1 1OC(O)- NR10-;
R2 and R3 are independently selected from: H; unsubstituted or substituted C1 -8 alkyl, unsubstituted or substituted C2-8 alkenyl, unsubstituted or substituted C2-8 alkynyl, unsubstituted or substituted aryl, unsubstituted or substituted heterocycle,
Figure imgf000007_0002
wherein the substituted group is substituted with one or more of:
1) aryl or heterocycle, unsubstituted or substituted with: a) C1 -4 alkyl,
b) (CH2)pOR6,
c) (CH2)pNR6R7,
d) halogen,
e) CN,
f) aryl or heteroaryl,
g) perfluoro- C1 -4 alkyl, or
h) SR6a, S(O)R6a, SO2R6a,
2) C3 -6 cycloalkyl,
3) OR6,
4) SR6a, S(O)R6a, or SO2R6a,
Figure imgf000008_0001
Figure imgf000009_0001
15) N3,
16) F, or
17) perfluoro- C1 -4-alkyl; or R2 and R3 are attached to the same C atom and are combined to form (CH2)u - wherein one of the carbon atoms is optionally replaced by a moiety selected from: O, S(O)m, -NC(O)-, and -N(COR10)- ;
R4 is selected from H and CH3; and any two of R2, R3 and R4 are optionally attached to the same carbon atom; R6, R7 and R7a are independently selected from: H; C1 -4 alkyl, C3 -6 cycloalkyl, heterocycle, aryl, aroyl, heteroaroyl, arylsulfonyl, heteroarylsulfonyl, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) aryl or heterocycle,
c) halogen,
d) HO,
Figure imgf000010_0001
f) —SO2R11 , or
g) N(R10)2; or R6 and R7 may be joined in a ring;
R7 and R7a may be joined in a ring; R6a is selected from: C1 -4 alkyl, C3-6 cycloalkyl, heterocycle, aryl, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) aryl or heterocycle,
c) halogen,
d) HO,
Figure imgf000010_0002
f) —SO2R11 , or g) N(R10)2;
R8 is independently selected from:
a) hydrogen,
b) aryl, heterocycle, C3-C10 cycloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, perfluoroalkyl, F, Cl, Br, R10O-,
R1 1S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N- C(NR10)-, CN, NO2, R10C(O)-, N3, -N(R10)2, or
R1 1OC(O)NR10-, and
c) C1-C6 alkyl unsubstituted or substituted by aryl,
cyanophenyl, heterocycle, C3-C10 cycloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, perfluoroalkyl, F, Cl, Br, R 10O-, R1 1S(O)m-, R10C(O)NH-, (R10)2NC(O)-, R 10 2N- C(NR10)-, CN, R10C(O)-, N3, -N(R10)2, or R10OC(O)NH-;
R9 is selected from:
a) hydrogen,
b) alkenyl, alkynyl, perfluoroalkyl, F, Cl, Br, R10O-,
R1 1S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R 10 2N-
C(NR10)-, CN, NO2 , R10C(O)-, N3, -N(R10)2, or
R1 1OC(O)NR10-, and
c) C1 -C6 alkyl unsubstituted or substituted by perfluoroalkyl, F, Cl, Br, R10O-, R1 1S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N-C(NR10)-, CN, R10C(O)-, N3,
-N(R10)2, or R1 1 OC(O)NR10-; R10 is independently selected from hydrogen, C1 -C6 alkyl, benzyl and aryl; R1 1 is independently selected from C1-C6 alkyl and aryl;
A1 and A2 are independently selected from: a bond, -CH=CH-, -C=C-,
-C(O)-, -C(O)NR10-, -NR10C(O)-, O, -N(R10)-,
-S(O)2N(R10)-, -N(R10)S(O)2-, or S(O)m;
G is selected from H2 and O;
V is selected from: a) hydrogen,
b) heterocycle,
c) aryl,
d) C1 -C20 alkyl wherein from 0 to 4 carbon atoms are
replaced with a a heteroatom selected from O, S, and N, and
e) C2-C20 alkenyl,
provided that V is not hydrogen if A1 is S(O)m and V is not hydrogen if A1 is a bond, n is 0 and A2 is S(O)m,
W is a heterocycle;
Z is selected from: a unsubstituted or substituted group selected from aryl or heteroaryl, wherein the substituted group is substituted with one or more of the following:
a) C1 -4 alkyl, unsubstituted or substituted with:
C1 -4 alkoxy, NR6R7, C3-6 cycloalkyl, aryl, heterocycle, HO, -S(O)mR6a, or -C(O)NR6R7, b) aryl or heterocycle,
c) halogen,
d) OR6,
e) NR6R7,
f) CN,
g) NO2,
h) CF3;
i) -S(O)mR6a,
j) -C(O)NR6R7, or
k) C3-C6 cycloalkyl; ; m is 0, 1 or 2;
n is 0, 1 , 2, 3 or 4;
q is 1 or 2;
r is 0 to 5, provided that r is 0 when V is hydrogen; and s is 0 or 1 ; or the pharmaceutically acceptable salts thereof.
In a second embodiment of this invention, the inhibitors of farnesyl-protein transferase are illustrated by the formula B:
Figure imgf000013_0001
wherein:
R1 a is selected from:
a) hydrogen,
b) aryl, heterocycle, C3-C10 cycloalkyl, C2-C6 alkenyl,
C2-C6 alkynyl, R10O-, R1 1 S(O)m-, R10C(O)NR10-,
(R10)2NC(O)-, R1 0 2N-C(NR10)-, CN, NO2, R10C(O)-, N3, -N(R10)2, or R1 1 OC(O)NR10-,
c) unsubstituted or substituted C1 -C6 alkyl wherein the
substitutent on the substituted C1-C6 alkyl is selected from unsubstituted or substituted aryl, heterocyclic, C3-C10 cycloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, R10O-, R1 1S(O)m-, R 10C(O)NR10-, (R10)2NC(O)-, R 10 2N- C(NR10)-, CN, R10C(O)-, N3, -N(R10)2, and R11OC(O)- NR10-; R2 and R3 are independently selected from: H; unsubstituted or
substituted C1 -8 alkyl, unsubstituted or substituted C2-8 alkenyl,
unsubstituted or substituted C2-8 alkynyl, unsubstituted or substituted aryl, unsubstituted or substituted heterocycle,
Figure imgf000013_0002
wherein the substituted group is substituted with one or more of:
1) aryl or heterocycle, unsubstituted or substituted with: a) C1 -4 alkyl,
b) (CH2)pOR6,
c) (CH2)pNR6R7,
d) halogen,
e) CN,
f) aryl or heteroaryl,
g) perfluoro-C1 -4 alkyl, or
h) SR6a, S(O)R6a, SO2R6a,
2) C3-6 cycloalkyl,
3) OR6,
4) SR6a, S(O)R6a, or SO2R6a,
5) — NR6R7
Figure imgf000014_0001
r
Figure imgf000015_0001
15) N3,
16) F, or
17) perfluoro-C1-4-alkyl; or R2 and R3 are attached to the same C atom and are combined to form (CH2)u - wherein one of the carbon atoms is optionally replaced by a moiety selected from: O, S(O)m, -NC(O)-, and -N(COR10)- ;
R4 is selected from H and CH3; and any two of R2, R3 and R4 are optionally attached to the same carbon atom; R6, R7 and R7a are independently selected from: H; C1 -4 alkyl, C3-6 cycloalkyl, heterocycle, aryl, aroyl, heteroaroyl, arylsulfonyl, heteroarylsulfonyl, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) aryl or heterocycle,
c) halogen,
d) HO,
Figure imgf000016_0001
f) —SO2R1 1 , or g) N(R10)2; or R6 and R7 may be joined in a ring;
R7 and R7a may be joined in a ring; R6a is selected from: C1 -4 alkyl, C3-6 cycloalkyl, heterocycle, aryl, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) aryl or heterocycle,
c) halogen,
d) HO,
Figure imgf000016_0002
f) —SO2R11 , or g) N(R10)2; R8 is independently selected from:
a) hydrogen,
b) aryl, heterocycle, C3-C10 cycloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, perfluoroalkyl, F, Cl, Br, R10O-,
R1 1S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N- C(NR10)-, CN, NO2, R10C(O)-, N3, -N(R10)2, or
R1 1OC(O)NR10-, and
c) C1-C6 alkyl unsubstituted or substituted by aryl,
cyanophenyl, heterocycle, C3-C10 cycloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, perfluoroalkyl, F, Cl, Br, R10O-, R1 1S(O)m-, R10C(O)NH-, (R10)2NC(O)-, R10 2N- C(NR10)-, CN, R10C(O)-, N3, -N(R10)2, or R10OC(O)NH-;
R9 is selected from:
a) hydrogen,
b) alkenyl, alkynyl, perfluoroalkyl, F, Cl, Br, R10O-,
R1 1S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N-
C(NR10)-, CN, NO2, R10C(O)-, N3, -N(R10)2, or
R1 1OC(O)NR10-, and
c) C1-C6 alkyl unsubstituted or substituted by perfluoroalkyl, F, Cl, Br, R10O-, R1 1S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N-C(NR10)-, CN, R10C(O)-, N3,
-N(R10)2, or R1 1 OC(O)NR10-; R10 is independently selected from hydrogen, C1 -C6 alkyl, benzyl and aryl; R1 1 is independently selected from C1-C6 alkyl and aryl;
A1 and A2 are independently selected from: a bond, -CH=CH-, -C≡C-,
-C(O)-, -C(O)NR10-, -NR10C(O)-, O, -N(R10).,
-S(O)2N(R 10)-, -N(R10)S(O)2-, or S(O)m;
V is selected from:
a) hydrogen,
b) heterocycle, c) aryl,
d) C1 -C20 alkyl wherein from 0 to 4 carbon atoms are
replaced with a a heteroatom selected from O, S, and N, and
e) C2-C20 alkenyl,
provided that V is not hydrogen if A1 is S(O)m and V is not hydrogen if A1 is a bond, n is 0 and A2 is S(O)m;
W is a heterocycle;
Z is selected from: a unsubstituted or substituted group selected from aryl or heteroaryl, wherein the substituted group is substituted with one or more of the following:
a) C1 -4 alkyl, unsubstituted or substituted with:
C1 -4 alkoxy, NR6R7, C3-6 cycloalkyl, aryl, heterocycle, HO, -S(O)mR6a, or -C(O)NR6R7, b) aryl or heterocycle,
c) halogen,
d) OR6,
e) NR6R7,
f) CN,
g) NO2,
h) CF3;
i) -S(O)mR6a,
j) -C(O)NR6R7, or
k) C3-C6 cycloalkyl; ; m is 0, 1 or 2;
n is 0, 1 , 2, 3 or 4;
q is 1 or 2;
r is 0 to 5, provided that r is 0 when V is hydrogen; and s is 1 ; or the pharmaceutically acceptable salts thereof. In a preferred embodiment of this invention, the inhibitors of farnesyl-protein transferase are illustrated by the formula A: V
Figure imgf000019_0001
wherein:
R 1 a is independently selected from: hydrogen or C1 -C6 alkyl;
R1 b is independently selected from:
a) hydrogen,
b) aryl, heterocycle, cycloalkyl, R 10O-, -N(R10)2 or C2-C6 alkenyl,
c) unsubstituted or substituted C1 -C6 alkyl wherein the
substitutent on the substituted C1-C6 alkyl is selected from unsubstituted or substituted aryl, heterocycle, cycloalkyl, alkenyl, R10O- and -N(R10)2; R3 and R4 are independently selected from H and CH3;
R2 is H;
Figure imgf000019_0002
C1 -5 alkyl, unbranched or branched, unsubstituted or substituted with one or more of:
1 ) aryl,
2) heterocycle,
3) OR6, 4) SR6a, SO2R6a, or
Figure imgf000020_0001
and any two of R2, R3, R4, and R5 are optionally attached to the same carbon atom; R6, R7 and R7a are independently selected from:
H; C1 -4 alkyl, C3-6 cycloalkyl, aryl, heterocycle, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) halogen, or
c) aryl or heterocycle; R6a is selected from:
C1 -4 alkyl or C3-6 cycloalkyl,
unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) halogen, or
c) aryl or heterocycle;
R8 is independently selected from:
a) hydrogen,
b) C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, C1 -C6
perfluoroalkyl, F, Cl, R10O-, R10C(O)NR10-, CN, NO2,
(R10)2N-C(NR10)-, R10C(O)-, -N(R10)2, or R11OC(O)NR10-, and
c) C1-C6 alkyl substituted by C1 -C6 perfluoroalkyl, R 10O-, R10C(O)NR10-, (R1 0)2N-C(NR10)-, R10C(O)-,
-N(R10)2, or R 1 1 OC(O)NR10-;
R9 is selected from:
a) hydrogen, b) C2-C6 alkenyl, C2-C6 alkynyl, C1 -C6 perfluoroalkyl, F, Cl, R10O-, R1 1 S(O)m-, R10C(O)NR10-, CN, NO2, (R10)2N-C(NR10)-, R10C(O)-, -N(R10)2, or
R1 1OC(O)NR10-, and
c) C1 -C6 alkyl unsubstituted or substituted by C1 -C6
perfluoroalkyl, F, Cl, R10O-, R 1 1 S(O)m-, R10C(O)NR 1 0-, CN, (R10)2N-C(NR10)-, R10C(O)-, -N(R10)2, or
R1 1 OC(O)NR10-; R10 is independently selected from hydrogen, C1-C6 alkyl, benzyl and aryl; R1 1 is independently selected from C1 -C6 alkyl and aryl;
A1 and A2 are independently selected from: a bond, -CH=CH-, -C≡C-,
-C(O)-, -C(O)NR10-, O, -N(R10)-, or S(O)m;
G is selected from H2 and O; V is selected from:
a) hydrogen,
b) heterocycle selected from pyrrolidinyl, imidazolyl,
pyridinyl, thiazolyl, pyridonyl, 2-oxopiperidinyl, indolyl, quinolinyl, isoquinolinyl, and thienyl,
c) aryl,
d) C1-C20 alkyl wherein from 0 to 4 carbon atoms are
replaced with a a heteroatom selected from O, S, and N, and
e) C2-C20 alkenyl, and
provided that V is not hydrogen if A1 is S(O)m and V is not hydrogen if A 1 is a bond, n is 0 and A2 is S(O)m; W is a heterocycle selected from pyrrolidinyl, imidazolyl, pyridinyl, thiazolyl, pyridonyl, 2-oxopiperidinyl, indolyl, quinolinyl, or isoquinolinyl; Z is mono- or bicyclic aryl, mono- or bicyclic heteroaryl, mono- or bicyclic arylmethyl, mono- or bicyclic heteroarylmethyl, mono- or bicyclic arylsulfonyl, mono- or bicyclic heteroarylsulfonyl, unsubstituted or substituted with one or two of the following: 1 ) C1 -4 alkyl, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) NR6R7,
c) C3-6 cycloalkyl,
d) aryl or heterocycle,
e) HO,
f) -S(O)mR6, or
g) -C(O)NR6R7,
2) aryl or heterocycle,
3) halogen,
4) OR6,
5) NR6R7,
6) CN,
7) NO2,
8) CF3;
9) -S(O)mR6,
10) -C(O)NR6R7, or
1 1 ) C3-C6 cycloalkyl; m is 0, 1 or 2;
n is 0, 1, 2, 3 or 4;
p is 0, 1 , 2, 3 or 4;
r is 0 to 5, provided that r is 0 when V is hydrogen;
s is 0 or 1 ;
t is 0 or 1 ; and u is 4 or 5; or the pharmaceutically acceptable salts thereof. In a more preferred embodiment of this invention, the inhibitors of farnesyl-protein transferase are illustrated by the formula C:
Figure imgf000023_0001
wherein: R3 and R4 are independently selected from H and CH3;
R2 is H;
Figure imgf000023_0002
C1 -5 alkyl, unbranched or branched, unsubstituted or substituted with one or more of:
1 ) aryl,
2) heterocycle,
3) OR6,
4) SR6a, SO2R6a, or
Figure imgf000023_0003
and R2 and R3 are optionally attached to the same carbon atom; R6 and R7 are independently selected from:
H; C1 -4 alkyl, C3-6 cycloalkyl, aryl, heterocycle, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) halogen, or
c) aryl or heterocycle;
R6a is selected from:
C1 -4 alkyl or C3-6 cycloalkyl,
unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) halogen, or
c) aryl or heterocycle; R8 is independently selected from:
a) hydrogen,
b) C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, C1 -C6
perfluoroalkyl, F, Cl, R10O-, R10C(O)NR10-, CN, NO2, (R10)2N-C(NR10)-, R10C(O)-, -N(R10)2, or R1 1OC(O)NR10-, and
c) C1 -C6 alkyl substituted by C1 -C6 perfluoroalkyl, R10O-, R10C(O)NR10-, (R10)2N-C(NR10)-, R10C(O)-,
-N(R10)2, or R1 1 OC(O)NR10-; R10 is independently selected from hydrogen, C1 -C6 alkyl, benzyl and aryl;
R 1 1 is independently selected from C1 -C6 alkyl and aryl; Z is mono- or bicyclic aryl, mono- or bicyclic heteroaryl, mono- or bicyclic arylmethyl, mono- or bicyclic heteroarylmethyl, mono- or bicyclic arylsulfonyl, mono- or bicyclic heteroarylsulfonyl, unsubstituted or substituted with one or two of the following: 1 ) C1 -4 alkyl, unsubstituted or substituted with a) C1 -4 alkoxy,
b) NR6R7,
c) C3-6 cycloalkyl,
d) aryl or heterocycle,
e) HO,
f) -S(O)mR6, or
g) -C(O)NR6R7,
2) aryl or heterocycle,
3) halogen,
4) OR6,
5) NR6R7,
6) CN,
7) NO2,
8) CF3;
9) -S(O)mR6,
10) -C(O)NR6R7, or
1 1 ) C3-C6 cycloalkyl; m is 0, 1 or 2; and or the pharmaceutically acceptable salts thereof.
In a second more preferred embodiment of this invention, the inhibitors of farnesyl-protein transferase are illustrated by the formula D:
Figure imgf000025_0001
wherein: R2, R3 and R4 are independently selected from: hydrogen or C 1 -C6 alkyl;
Z is mono- or bicyclic aryl, mono- or bicyclic heteroaryl, mono- or bicyclic arylmethyl, mono- or bicyclic
heteroarylmethyl, mono- or bicyclic arylsulfonyl, mono- or bicyclic heteroarylsulfonyl, unsubstituted or substituted with one or two of the following:
1 ) C1 -4 alkyl, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) NR6R7,
c) C3-6 cycloalkyl,
d) aryl or heterocycle,
e) HO,
f) -S(O)mR6, or
g) -C(O)NR6R7,
2) aryl or heterocycle,
3) halogen,
4) OR6,
5) NR6R7,
6) CN,
7) NO2,
8) CF3;
9) -S(O)mR6,
10) -C(O)NR6R7, or
1 1 ) C3-C6 cycloalkyl; m is 0, 1 or 2; and or the pharmaceutically acceptable salts thereof.
The preferred compounds of this invention are as follows: 4-[1 -(4-methoxybenzyl)imidazol-2-yl]-1-(2-chlorophenyl)-piperazin-2- one and
4-[3-(4-methoxybenzyl)pyrid-4-yl]-1-(2-chlorophenyl)-piperazin-2-one or the pharmaceutically acceptable salts or optical isomers thereof.
The compounds of the present invention may have asymmetric centers and occur as racemates, racemic mixtures, and as individual diastereomers, with all possible isomers, including optical isomers, being included in the present invention. When any variable (e.g. aryl, heterocycle, R1 , R2 etc.) occurs more than one time in any constituent, its definition on each occurence is independent at every other occurence. Also, combinations of substituents/or variables are permissible only if such combinations result in stable compounds.
As used herein, "alkyl" is intended to include both branched and straight-chain saturated aliphatic hydrocarbon groups having the specified number of carbon atoms; "alkoxy" represents an alkyl group of indicated number of carbon atoms attached through an oxygen bridge. "Halogen" or "halo" as used herein means fluoro, chloro, bromo and iodo.
As used herein, "aryl" is intended to mean any stable monocyclic or bicyclic carbon ring of up to 7 members in each ring, wherein at least one ring is aromatic. Examples of such aryl elements include phenyl, naphthyl, tetrahydronaphthyl, indanyl, biphenyl, phenanthryl, anthryl or acenaphthyl.
The term heterocycle or heterocyclic, as used herein, represents a stable 5- to 7-membered monocyclic or stable 8- to 1 1 - membered bicyclic heterocyclic ring which is either saturated or unsaturated, and which consists of carbon atoms and from one to four heteroatoms selected from the group consisting of N, O, and S, and including any bicyclic group in which any of the above-defined heterocyclic rings is fused to a benzene ring. The heterocyclic ring may be attached at any heteroatom or carbon atom which results in the creation of a stable structure. Examples of such heterocyclic elements include, but are not limited to, azepinyl, benzimidazolyl, benzisoxazolyl, benzofurazanyl, benzopyranyl, benzothiopyranyl, benzofuryl,
benzothiazolyl, benzothienyl, benzoxazolyl, chromanyl, cinnolinyl, dihydrobenzofuryl, dihydrobenzothienyl, dihydrobenzothiopyranyl, dihydrobenzothiopyranyl sulfone, furyl, imidazolidinyl, imidazolinyl, imidazolyl, indolinyl, indolyl, isochromanyl, isoindolinyl, isoquinolinyl, isothiazolidinyl, isothiazolyl, isothiazolidinyl, morpholinyl,
naphthyridinyl, oxadiazolyl, 2-oxoazepinyl, oxazolyl, 2-oxopiperazinyl, 2-oxopiperdinyl, 2-oxopyrrolidinyl, piperidyl, piperazinyl, pyridyl, pyrazinyl, pyrazolidinyl, pyrazolyl, pyridazinyl, pyrimidinyl,
pyrrolidinyl, pyrrolyl, quinazolinyl, quinolinyl, quinoxalinyl,
tetrahydrofuryl, tetrahydroisoquinolinyl, tetrahydroquinolinyl, thiamorpholinyl, thiamorpholinyl sulfoxide, thiazolyl, thiazolinyl, thienofuryl, thienothienyl, and thienyl.
As used herein, "heteroaryl" is intended to mean any stable monocyclic or bicyclic carbon ring of up to 7 members in each ring, wherein at least one ring is aromatic and wherein from one to four carbon atoms are replaced by heteroatoms selected from the group consisting of N, O, and S. Examples of such heterocyclic elements include, but are not limited to, benzimidazolyl, benzisoxazolyl, benzofurazanyl, benzopyranyl, benzothiopyranyl, benzofuryl,
benzothiazolyl, benzothienyl, benzoxazolyl, chromanyl, cinnolinyl, dihydrobenzofuryl, dihydrobenzothienyl, dihydrobenzothiopyranyl, dihydrobenzothiopyranyl sulfone, furyl, imidazolyl, indolinyl, indolyl, isochromanyl, isoindolinyl, isoquinolinyl, isothiazolyl, naphthyridinyl, oxadiazolyl, pyridyl, pyrazinyl, pyrazolyl, pyridazinyl, pyrimidinyl, pyrrolyl, quinazolinyl, quinolinyl, quinoxalinyl,
tetrahydroisoquinolinyl, tetrahydroquinolinyl, thiazolyl, thienofuryl, thienothienyl, and thienyl.
As used herein in the definition of R2 and R3, the term "the substituted group" intended to mean a substituted C1 -8 alkyl, substituted C2-8 alkenyl, substituted C2-8 alkynyl, substituted aryl or substituted heterocycle from which the substitutent(s) R2 and R3 are selected.
As used herein in the definition of R6, R6a, R7 and R7a, the substituted C1 -8 alkyl, substituted C3-6 cycloalkyl, substituted aroyl, substituted aryl, substituted heteroaroyl, substituted arylsulfonyl, substituted heteroarylsulfonyl and substituted heterocycle include moieties containing from 1 to 3 substitutents in addition to the point of attachment to the rest of the compound. Preferably, such substitutents are selected from the group which includes but is not limited to F, Cl, Br, CF3, NH2, N(C1 -C6 alkyl)2, NO2, CN, (C1 -C6 alkyl)O-, -OH, (C1 -C6 alkyl)S(O)m-, (C1 -C6 alkyl)C(O)NH-, H2N-C(NH)-, (C1 -C6 alkyl)C(O)-, (C1 -C6 alkyl)OC(O)-, N3,(C1 -C6 alkyl)OC(O)NH-, phenyl, pyridyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, thienyl, furyl, isothiazolyl and C1 -C20 alkyl.
When R2 and R3 are combined to form - (CH2)u -, cyclic moieties are formed. Examples of such cyclic moieties include, but are not limited to:
Figure imgf000029_0001
In addition, such cyclic moieties may optionally include a heteroatom(s). Examples of such heteroatom-containing cyclic moieties include, but are not limited to:
j
Figure imgf000029_0002
Lines drawn into the ring systems from substituents
(such as from R2, R3, R4 etc.) indicate that the indicated bond may be attached to any of the substitutable ring carbon atoms.
Preferably, R1 a is selected from: hydrogen, -N(R10)2, R10C(O)NR10- or unsubstituted or substituted C1 -C6 alkyl wherein the substituent on the substituted C1 -C6 alkyl is selected from unsubstituted or substituted phenyl, -N(R10)2, R10O- and R10C(O)NR10-.
Preferably, R2 is selected from: H,
Figure imgf000030_0001
and an unsubstituted or substituted group, the group selected from C1 -8 alkyl, C2-8 alkenyl and C2-8 alkynyl;
wherein the substituted group is substituted with one or more of:
1) aryl or heterocycle, unsubstituted or substituted with: a) C1 -4 alkyl,
b) (CH2)pOR6,
c) (CH2)pNR6R7,
d) halogen,
2) C3-6 cycloalkyl,
3) OR6,
4) SR6a, S(O)R6a, SO2R6a,
5) — NR6R7
Figure imgf000030_0002
Figure imgf000031_0001
15) N3, or
16) F. Preferably, R3 is selected from: hydrogen and C1 -C6 alkyl.
Preferably, R4 is hydrogen.
Preferably, R6, R7 and R7a is selected from: hydrogen, unsubstituted or substituted C1-C6 alkyl, unsubstituted or substituted aryl and unsubstituted or substituted cycloalkyl.
Preferably, R6a is unsubstituted or substituted C1 -C6 alkyl, unsubstituted or substituted aryl and unsubstituted or substituted cycloalkyl.
Preferably, R9 is hydrogen or methyl. Most preferably, R9 is hydrogen. Preferably, R10 is selected from H, C1 -C6 alkyl and benzyl.
Preferably, A1 and A2 are independently selected from: a bond, -C(O)NR10-, -NR10C(O)-, O, -N(R10)-, -S(O)2N(R10)- and- N(R10)S(O)2-.
Preferably, V is selected from hydrogen, heterocycle and aryl. More preferably, V is phenyl.
Preferably, Y is selected from unsubstituted or substituted phenyl, unsubstituted or substituted naphthyl, unsubstituted or
substituted pyridyl, unsubstituted or substituted furanyl and
unsubstituted or substituted thienyl. More preferably, Y is unsubstituted or substituted phenyl.
Preferably, Z is selected from unsubstituted or substituted phenyl, unsubstituted or substituted naphthyl, unsubstituted or
substituted pyridyl, unsubstituted or substituted furanyl and
unsubstituted or substituted thienyl. More preferably, Z is unsubstituted or substituted phenyl.
Preferably, W is selected from imidazolinyl, imidazolyl, oxazolyl, pyrazolyl, pyrrolidinyl, thiazolyl and pyridyl. More preferably, W is selected from imidazolyl and pyridyl.
Preferably, n and r are independently 0, 1. or 2.
Preferably s is 0.
Preferably q is 1.
Preferably, the moiety
Figure imgf000032_0001
is selected from:
Figure imgf000033_0001
It is intended that the definition of any substituent or variable (e.g., R1 a, R9, n, etc.) at a particular location in a molecule be independent of its definitions elsewhere in that molecule. Thus, -N(R 10)2 represents -NHH, -NHCH3, -NHC2H5, etc. It is understood that substituents and substitution patterns on the compounds of the instant invention can be selected by one of ordinary skill in the art to provide compounds that are chemically stable and that can be readily synthesized by techniques known in the art, as well as those methods set forth below, from readily available starting materials.
The pharmaceutically acceptable salts of the compounds of this invention include the conventional non-toxic salts of the compounds of this invention as formed, e.g., from non-toxic inorganic or organic acids. For example, such conventional non-toxic salts include those derived from inorganic acids such as hydrochloric, hydrobromic, sulfuric, sulfamic, phosphoric, nitric and the like: and the salts prepared from organic acids such as acetic, propionic, succinic, glycolic, stearic, lactic, malic, tartaric, citric, ascorbic, pamoic, maleic, hydroxymaleic, phenylacetic, glutamic, benzoic, salicylic, sulfanilic, 2-acetoxy-benzoic, fumaric, toluenesulfonic, methanesulfonic, ethane disulfonic, oxalic, isethionic, trifluoroacetic and the like.
The pharmaceutically acceptable salts of the compounds of this invention can be synthesized from the compounds of this invention which contain a basic moiety by conventional chemical methods. Generally, the salts are prepared either by ion exchange chromato graph y or by reacting the free base with stoichiometric amounts or with an excess of the desired salt-forming inorganic or organic acid in a suitable solvent or various combinations of solvents. Reactions used to generate the compounds of this invention are prepared by employing reactions as shown in the Schemes 1-22, in addition to other standard manipulations such as ester hydrolysis, cleavage of protecting groups, etc., as may be known in the literature or exemplified in the experimental procedures. Substituents R, Ra and Rb, as shown in the Schemes, represent the substituents R2, R3, R4 and R5; however their point of attachment to the ring is illustrative only and is not meant to be limiting.
These reactions may be employed in a linear sequence to provide the compounds of the invention or they may be used to synthesize fragments which are subsequently joined by the alkylation reactions described in the Schemes.
Synopsis of Schemes 1-16:
The requisite intermediates are in some cases commercially available, or can be prepared according to literature procedures, for the most part. In Scheme 1, for example, the synthesis of suitably substituted piperazines is outlined, and is essentially that described by J. S. Kiely and S. R. Priebe in Organic Preparations and Proceedings Int., 1990, 22, 761-768. Boc-protected amino acids I, available commercially or by procedures known to those skilled in the art, can be coupled to N-aryl amino acid esters using a variety of dehydrating agents such as DCC (dicyclohexycarbodiimide) or EDC·HCl (1-ethyl-3-(3-dimethyl- aminopropyl)carbodiimide hydrochloride) in a solvent such as methyl- ene chloride , chloroform, dichloroethane, or in dimethylformamide. The product II is then deprotected with acid, for example hydrogen chloride in chloroform or ethyl acetate, or trifluoroacetic acid in methylene chloride, and cyclized under weakly basic conditions to give the diketopiperazine III. Reduction of III with lithium aluminum hydride in refluxing ether gives the piperazine IV.
Scheme 2 illustrates the incorporation of a hetercyclic moiety on the remaining unsubstituted nitrogen of the piperazine.
Thus, intermediate IV is treated with the isothiocyanate V, followed by methylation provides the thioimidate VI. Displacement of the methyl thiol moiety with an appropriately substituted amine followed by cyclization provides the N-imidazolyl piperazine VIII.
Scheme 2a illustrates incorporation of the preferred imidazolyl moiety on a nitrogen of a piperazinone. Thus, a suitably substituted aniline is N-alkylated sequentially with a protected
acetaldehyde and a haloacetyl moiety. Reductive alkylation with an aminoimidazole, followed by base treatment provides the 1 -phenyl- 4-imidazolyl-piperazin-2-one. The imidazolyl can then be substituted with a suitably substituted benzyl moiety.
Preparation of the corresponding N-pyridyl piperazine
XII is illustrated in Scheme 3. A suitably substituted benzaldehyde is coupled to 4-chloropyridine to provide the pyridylphenylmethanol IX. Removal of the hydroxyl moiety followed by oxidation of the pyridinyl nitrogen provide intermediate X. Intermediate X is then reacted with the piperazine IV to provide the instant compound XII.
Depending on the identity of the amino acid I, various side chains can be incorporated into the piperazine. For example when I is the Boc-protected β-benzyl ester of aspartic acid, the intermediate diketopiperazine XIII where n= 1 and R=benzyl is obtained, as shown in Scheme 4. Subsequent lithium aluminum hydride reduction reduces the ester to the alcohol XIV, which can then be reacted with a variety of alkylating agents such as an alkyl iodide, under basic conditions, for example, sodium hydride in dimethylformamide or tetrahydrofuran. The resulting ether XV can then be carried on to final products as described in Schemes 2 and 3.
Reaction Scheme 5 provides an illustrative example the synthesis of compounds of the instant invention wherein the substituents R2 and R3 are combined to form - (CH2)u -. For example, 1-aminocyclohexane-1-carboxylic acid XVI can be converted to the spiropiperazine XVIII essentially according to the procedures outlined in Schemes 1. The piperazine intermediate XVIII can be carried on to final products as described in Schemes 2-3.
Scheme 6 illustrates the use of an optionally substituted homoserine lactone XXI to prepare a Boc-protected piperazinone XXII. Intermediate XXII may be reduced, deprotected and reductively alkylated or acylated as illustrated in the previous Schemes.
Alternatively, the hydroxyl moiety of intermediate XXIII may be mesylated and displaced by a suitable nucleophile, such as the sodium salt of ethane thiol, to provide an intermediate XXIV. Intermediate XXIII may also be oxidized to provide the carboxylic acid on intermediate XXV, which can be utilized form an ester or amide moiety.
Amino acids of the general formula XXVI which have a sidechain not found in natural amino acids may be prepared by the reactions illustrated in Scheme 18 starting with the readily prepared imine XXVII.
Figure imgf000037_0001
Figure imgf000038_0001
Figure imgf000039_0001
Figure imgf000040_0001
Figure imgf000041_0001
Figure imgf000042_0001
Figure imgf000043_0001
Figure imgf000044_0001
Figure imgf000045_0001
Figure imgf000046_0001
Figure imgf000047_0001
The instant compounds are useful as pharmaceutical a gents for mammals, especially for humans. These compounds may be administered to patients for use in the treatment of cancer. Examples of the type of cancer which may be treated with the compounds of this invention include, but are not limited to, colorectal carcinoma, exocrine pancreatic carcinoma, myeloid leukemias and neurological tumors. Such tumors may arise by mutations in the ras genes themselves, mutations in the proteins that can regulate Ras activity (i.e.,
neurofibromin (NF-1 ), neu, scr, abl, lck, fyn) or by other mechanisms.
The compounds of the instant invention inhibit farnesyl- protein transferase and the farnesylation of the oncogene protein Ras. The instant compounds may also inhibit tumor angiogenesis, thereby affecting the growth of tumors (J. Rak et al. Cancer Research, 55:4575- 4580 (1995)). Such anti-angiogenesis properties of the instant
compounds may also be useful in the treatment of certain forms of blindness related to retinal vascularization.
The compounds of this invention are also useful for inhibiting other proliferative diseases, both benign and malignant, wherein Ras proteins are aberrantly activated as a result of oncogenic mutation in other genes (i.e., the Ras gene itself is not activated by mutation to an oncogenic form) with said inhibition being accomplished by the administration of an effective amount of the compounds of the invention to a mammal in need of such treatment. For example, a component of NF-1 is a benign proliferative disorder.
The instant compounds may also be useful in the treatment of certain viral infections, in particular in the treatment of hepatitis delta and related viruses (J.S. Glenn et al. Science, 256:1331-1333 (1992).
The compounds of the instant invention are also useful in the prevention of restenosis after percutaneous transluminal coronary angioplasty by inhibiting neointimal formation (C. Indolfi et al. Nature medicine, 1:541-545(1995).
The instant compounds may also be useful in the treatment and prevention of polycystic kidney disease (D.L. Schaffner et al. American Journal of Pathology, 142: 1051 -1060 (1993) and B. Cowley, Jr. et al.FASEB Journal, 2:A3160 (1988)).
The instant compounds may also be useful for the treatment of fungal infections.
The compounds of this invention may be administered to mammals, preferably humans, either alone or, preferably, in combination with pharmaceutically acceptable carriers or diluents, optionally with known adjuvants, such as alum, in a pharmaceutical composition, according to standard pharmaceutical practice. The compounds can be administered orally or parenterally, including the intravenous, intramuscular, intraperitoneal, subcutaneous, rectal and topical routes of administration.
For oral use of a chemotherapeutic compound according to this invention, the selected compound may be administered, for example, in the form of tablets or capsules, or as an aqueous solution or suspension. In the case of tablets for oral use, carriers which are commonly used include lactose and com starch, and lubricating agents, such as magnesium stearate, are commonly added. For oral administration in capsule form, useful diluents include lactose and dried com starch. When aqueous suspensions are required for oral use, the active ingredient is combined with emulsifying and suspending agents. If desired, certain sweetening and/or flavoring agents may be added. For intramuscular, intraperitoneal, subcutaneous and intravenous use, sterile solutions of the active ingredient are usually prepared, and the pH of the solutions should be suitably adjusted and buffered. For intravenous use, the total concentration of solutes should be controlled in order to render the preparation isotonic.
The compounds of the instant invention may also be co- administered with other well known therapeutic agents that are selected for their particular usefulness against the condition that is being treated. For example, the instant compounds may be useful in combination with known anti-cancer and cytotoxic agents. Similarly, the instant compounds may be useful in combination with agents that are effective in the treatment and prevention of NF- 1 , restenosis, polycystic kidney disease, infections of hepatitis delta and related viruses and fungal infections.
If formulated as a fixed dose, such combination products employ the compounds of this invention within the dosage range described below and the other pharmaceutically active agent(s) within its approved dosage range. Compounds of the instant invention may alternatively be used sequentially with known pharmaceutically acceptable agent(s) when a combination formulation is inappropriate.
The present invention also encompasses a pharmaceutical composition useful in the treatment of cancer, comprising the
administration of a therapeutical ly effective amount of the compounds of this invention, with or without pharmaceutically acceptable carriers or diluents. Suitable compositions of this invention include aqueous solutions comprising compounds of this invention and pharmacologically acceptable carriers, e.g., saline, at a pH level, e.g., 7.4. The solutions may be introduced into a patient's blood-stream by local bolus injection.
As used herein, the term "composition" is intended to encompass a product comprising the specified ingredients in the specific amounts, as well as any product which results, directly or indirectly, from combination of the specific ingredients in the specified amounts.
When a compound according to this invention is administered into a human subject, the daily dosage will normally be determined by the prescribing physician with the dosage generally varying according to the age, weight, and response of the individual patient, as well as the severity of the patient's symptoms.
In one exemplary application, a suitable amount of compound is administered to a mammal undergoing treatment for cancer. Administration occurs in an amount between about 0.1 mg/kg of body weight to about 60 mg/kg of body weight per day, preferably of between 0.5 mg/kg of body weight to about 40 mg/kg of body weight per day.
The compounds of the instant invention are also useful as a component in an assay to rapidly determine the presence and quantity of farnesyl-protein transferase (FPTase) in a composition. Thus the composition to be tested may be divided and the two
portions contacted with mixtures which comprise a known substrate of FPTase (for example a tetrapeptide having a cysteine at the amine terminus) and farnesyl pyrophosphate and, in one of the mixtures, a compound of the instant invention. After the assay mixtures are incubated for an sufficient period of time, well known in the art, to allow the FPTase to farnesylate the substrate, the chemical content of the assay mixtures may be determined by well known immunological, radiochemical or chromatographic techniques. Because the compounds of the instant invention are selective inhibitors of FPTase, absence or quantitative reduction of the amount of substrate in the assay mixture without the compound of the instant invention relative to the presence of the unchanged substrate in the assay containing the instant compound is indicative of the presence of
FPTase in the composition to be tested.
It would be readily apparent to one of ordinary skill in the art that such an assay as described above would be useful in identifying tissue samples which contain farnesyl-protein transferase and quantitating the enzyme. Thus, potent inhibitor compounds of the instant invention may be used in an active site titration assay to determine the quantity of enzyme in the sample. A series of samples composed of aliquots of a tissue extract containing an unknown amount of farnesyl- protein transferase, an excess amount of a known substrate of FPTase (for example a tetrapeptide having a cysteine at the amine terminus) and farnesyl pyrophosphate are incubated for an appropriate period of time in the presence of varying concentrations of a compound of the instant invention. The concentration of a sufficiently potent inhibitor (i.e., one that has a Ki substantially smaller than the concentration of enzyme in the assay vessel) required to inhibit the enzymatic activity of the sample by 50% is approximately equal to half of the concentration of the enzyme in that particular sample. EXAMPLES
Examples provided are intended to assist in a further understanding of the invention. Particular materials employed, species and conditions are intended to be further illustrative of the invention and not limitative of the reasonable scope thereof.
EXAMPLE 1 Preparation of 4-[ 1 -(4-methoxybenzyl)imidazol-2-yl]-1-(2- chlorophenyl)-piperazin-2-one.
Step A: Synthesis of 4-[5-(4-methoxyphenyl)-2-thia-4-aza-pent-3- en-3-yl]-1-(2-chlorophenyl)-piperazin-2-one
Modifying the method of Poisson, et al., (Tetrahedron
Letters 32, 5325 (1991 )), p-methoxybenzyl isothiocyanate (1 molar equivalent) and 1-(2-chlorophenyl)-piperazine-2-one are heated in toluene at 50°C for 6 h. Without purification the product is S-methyl- ated by treatment with methyl iodide (3 molar equivalents) to furnish the title compound.
Step B: 4-[1-(4-methoxybenzyl)-imidazol-2-yl]-1 -(2-chlorophenyl)- piperazin-2-one.
The product of step A is treated with aminoacetaldehyde dimethyl acetal (1.5 molar equivalents) in isopropanol. The intermediate guanidine is refluxed in isopropanol and hydrochloric acid to give the title compound.
EXAMPLE 2
Preparation of 4-[3-(4-methoxybenzyl)pyrid-4-yl]- 1-(2-chlorophenyl)- piperazin-2-one.
Step A: 4-Chloro-3-(4-methoxybenzyl)pyridine. 4-Chloropyridine is treated sequentially with LDA (1.1 molar equivalents) and 4-methoxybenzaldehyde (1 molar equivalent). The resulting carbinol is isolated and deoxygenated with triethylsilane (10 molar equivalents) and 50% trifluoroacetic acid in methylene chloride to provide the title compound.
Step B: 4-Chloro-3-(4-methoxybenzyl)pyridine-N-oxide
The product of step A is oxidized to the title compound with m-chloroperoxybenzoic acid (1.1 molar equivalents).
Step C: 4-[3-(4-methoxybenzyl)pyrid-4-yl]-1 -(2-chlorophenyl)- piperazin-2-one.
The product of step B is heated with 1-(2-chIorophenyl)- piperazin-2-one (1 molar equivalent). The crude N-oxide of 4-[3-(4- methoxybenzyl)pyrid-4-yl]-1 -(2-chlorophenyl)-piperazin-2-one is deoxygenated by treatment with triphenylphosphine (2 molar
equivalents) to provide the title compound.
EXAMPLE 3
In vitro inhibition of ras farnesyl transferase
Assays of farnesyl-protein transferase. Partially purified bovine FPTase and Ras peptides (Ras-CVLS, Ras-CVIM and Ras-CAIL) were prepared as described by Schaber et al., J. Biol. Chem. 265:14701 - 14704 (1990), Pompliano, et al., Biochemistry 31 :3800 (1992) and Gibbs et al., PNAS U.S.A. 86:6630-6634 (1989), respectively. Bovine FPTase was assayed in a volume of 100 μl containing 100 mM N-(2- hydroxy ethyl) piperazine-N'-(2-ethane sulfonic acid) (HEPES), pH 7.4, 5 mM MgCl2, 5 mM dithiothreitol (DTT), 100 mM [3H]-farnesyl diphosphate ([3H]-FPP; 740 CBq/mmol, New England Nuclear), 650 nM Ras-CVLS and 10 μg/ml FPTase at 31 °C for 60 min. Reactions were initiated with FPTase and stopped with 1 ml of 1.0 M HCL in ethanol. Precipitates were collected onto filter-mats using a TomTec Mach II cell harvestor, washed with 100% ethanol, dried and counted in an LKB β- plate counter. The assay was linear with respect to both substrates, FPTase levels and time; less than 10% of the [3H]-FTP was utilized during the reaction period. Purified compounds were dissolved in 100% dimethyl sulfoxide (DMSO) and were diluted 20-fold into the assay. Percentage inhibition is measured by the amount of
incorporation of radioactivity in the presence of the test compound when compared to the amount of incorporation in the absence of the test compound.
Human FPTase was prepared as described by Omer
et al., Biochemistry 32:5167-5176 (1993). Human FPTase activity was assayed as described above with the exception that 0.1 % (w/v) polyethylene glycol 20,000, 10 μM ZnCl2 and 100 nm Ras-CVIM were added to the reaction mixture. Reactions were performed for 30 min., stopped with 100 μl of 30% (v/v) trichloroacetic acid (TCA) in ethanol and processed as described above for the bovine enzyme.
The compounds of the instant invention are tested for inhibitory activity against human FPTase by the assay described above.
EXAMPLE 4
In vivo ras farnesylation assay
The cell line used in this assay is a v-ras line derived from either Ratl or NIH3T3 cells, which expressed viral Ha-ras p21. The assay is performed essentially as described in DeClue, J.E. et al., Cancer Research 51 :712-717. (1991 ). Cells in 10 cm dishes at 50-75% confluency are treated with the test compound (final concentration of solvent, methanol or dimethyl sulfoxide, is 0.1%). After 4 hours at 37°C, the cells are labelled in 3 ml methionine-free DMEM supplemeted with 10% regular DMEM, 2% fetal bovine serum and 400 mCi[35S]methionine (1000 Ci/mmol). After an additional 20 hours, the cells are lysed in 1 ml lysis buffer (1 % NP40/20 mM HEPES, pH 7.5/5 mM MgCl2/1mM DTT/10 mg/ml aprotinen/2 mg/ml leupeptin/2 mg/ml antipain/0.5 mM PMSF) and the lysates cleared by centrifugation at 100,000 x g for 45 min. Aliqqots of lysates containing equal numbers of acid-precipitable counts are bought to 1 ml with IP buffer (lysis buffer lacking DTT) and immunoprecipitated with the ras-specific monoclonal antibody Y13-259 (Furth, M.E. et al., J. Virol. 43:294-304, (1982)). Following a 2 hour antibody incubation at 4°C, 200 ml of a 25% suspension of protein A-Sepharose coated with rabbit anti rat IgG is added for 45 min. The immunoprecipitates are washed four times with IP buffer (20 nM HEPES, pH 7.5/1 mM EDTA/1 % Triton X- 100.0.5% deoxycholate/0.1 %/SDS/0.1 M NaCl) boiled in SDS-PAGE sample buffer and loaded on 13% acrylamide gels. When the dye front reached the bottom, the gel is fixed, soaked in Enlightening, dried and autoradiographed. The intensities of the bands corresponding to farnesylated and nonfarnesylated ras proteins are compared to
determine the percent inhibition of farnesyl transfer to protein. EXAMPLE 5
In vivo growth inhibition assay
To determine the biological consequences of FPTase inhibition, the effect of the compounds of the instant invention on the anchorage-independent growth of Ratl cells transformed with either a v-ras, v-raf, or v-mos oncogene is tested. Cells transformed by v-Raf and v-Mos maybe included in the analysis to evaluate the specificity of instant compounds for Ras-induced cell transformation.
Rat 1 cells transformed with either v-ras, v-raf, or v-mos are seeded at a density of 1 x 104 cells per plate (35 mm in diameter) in a 0.3% top agarose layer in medium A (Dulbecco's modified Eagle's medium supplemented with 10% fetal bovine serum) over a bottom agarose layer (0.6%). Both layers contain 0.1 % methanol or an appropriate concentration of the instant compound (dissolved in methanol at 1000 times the final concentration used in the assay). The cells are fed twice weekly with 0.5 ml of medium A containing 0.1 % methanol or the concentration of the instant compound. Photomicrographs are taken 16 days after the cultures are seeded and comparisons are made.

Claims

WHAT IS CLAIMED IS:
1. A compound which inhibits farnesyl-protein transferase of the formula A: Λ
Figure imgf000056_0001
wherein:
R1 a is selected from:
a) hydrogen,
b) aryl, heterocycle, C3-C10 cycloalkyl, C2-C6 alkenyl,
C2-C6 alkynyl, R10O-, R1 1S(O)m-, R10C(O)NR10-,
(R10)2NC(O)-, R10 2N-C(NR10)-, CN, NO2, R10C(O)-, N3, -N(R10)2, or R1 1OC(O)NR10-,
c) unsubstituted or substituted C1-C6 alkyl wherein the
substirutent on the substituted C1-C6 alkyl is selected from unsubstituted or substituted aryl, heterocyclic, C3-C10 cycloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, R10O-, R1 1 S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N- C(NR10)-, CN, R10C(O)-, N3, -N(R10)2, and R1 1OC(O)- NR10-; R2 and R3 are independently selected from: H; unsubstituted or
substituted C1 -8 alkyl, unsubstituted or substituted C2-8 alkenyl,
unsubstituted or substituted C2-8 alkynyl, unsubstituted or substituted aryl, unsubstituted or substituted heterocycle,
Figure imgf000056_0002
wherein the substituted group is substituted with one or more of:
1 ) aryl or heterocycle, unsubstituted or substituted with: a) C1 -4 alkyl,
b) (CH2)pOR6,
c) (CH2)pNR6R7,
d) halogen,
e) CN,
f) aryl or heteroaryl,
g) perfluoro-C1 -4 alkyl, or
h) SR6a, S(O)R6a. SO2R6a,
2) C3-6 cycloalkyl,
3) OR6,
4) SR6a, S(O)R6a, or SO2R6a,
5) NR6R7
Figure imgf000057_0001
Figure imgf000058_0001
15) N3,
16) F, or
17) perfluoro-C1 -4-alkyl; or R2 and R3 are attached to the same C atom and are combined to form (CH2)u - wherein one of the carbon atoms is optionally replaced by a moiety selected from: O, S(O)m, -NC(O)-, and -N(COR10)- ;
R4 is selected from H and CH3; and any two of R2, R3 and R4 are optionally attached to the same carbon atom; R6, R7 and R7a are independently selected from: H; C1 -4 alkyl, C3-6 cycloalkyl, heterocycle, aryl, aroyl, heteroaroyl, arylsulfonyl, heteroarylsulfonyl, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) aryl or heterocycle,
c) halogen,
d) HO,
Figure imgf000059_0001
f) —SO2R11 , or g) N(R10)2; or R6 and R7 may be joined in a ring;
R7 and R7a may be joined in a ring; R6a is selected from: C1 -4 alkyl, C3-6 cycloalkyl, heterocycle, aryl, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) aryl or heterocycle,
c) halogen,
d) HO,
Figure imgf000059_0002
f) —SO2R11 , or g) N(R10)2; R8 is independently selected from:
a) hydrogen,
b) aryl, heterocycle, C3-C10 cycloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, perfluoroalkyl, F, Cl, Br, R1 0O-,
R1 1S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N- C(NR10)-, CN, NO2, R10C(O)-, N3, -N(R10)2, or
R1 1OC(O)NR10-, and
c) C1 -C6 alkyl unsubstituted or substituted by aryl,
cyanophenyl, heterocycle, C3-C10 cycloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, perfluoroalkyl, F, Cl, Br, R10O-, R1 1 S(O)m-, R10C(O)NH-, (R10)2NC(O)-, R10 2N- C(NR10)-, CN, R10C(O)-, N3, -N(R10)2, or R10OC(O)NH-; R9 is selected from:
a) hydrogen,
b) alkenyl, alkynyl, perfluoroalkyl, F, Cl, Br, R10O-,
R1 1 S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N-
C(NR10)-, CN, NO2, R10C(O)-, N3, -N(R10 )2, or
R1 1OC(O)NR10-, and
c) C1 -C6 alkyl unsubstituted or substituted by perfluoroalkyl, F, Cl, Br, R10O-, R1 1S(O)m-, R1 0C(O)NR10-, (R10)2NC(O)-, R 10 2N-C(NR10)-, CN, R10C(O)-, N3,
-N(R10)2, or R 1 1OC(O)NR10-; R10 is independently selected from hydrogen, C1-C6 alkyl, benzyl and aryl; R1 1 is independently selected from C1 -C6 alkyl and aryl;
A1 and A2 are independently selected from: a bond, -CH=CH-, -C≡C-,
-C(O)-, -C(O)NR10-, -NR10C(O)-, O, -N(R10)-,
-S(O)2N(R10)-, -N(R10)S(O)2-, or S(O)m;
G is selected from H2 and O;
V is selected from: a) hydrogen,
b) heterocycle,
c) aryl,
d) C1 -C20 alkyl wherein from 0 to 4 carbon atoms are
replaced with a a heteroatom selected from O, S, and N, and
e) C2-C20 alkenyl,
provided that V is not hydrogen if A1 is S(O)m and V is not hydrogen if A1 is a bond, n is 0 and A2 is S(O)m;
W is a heterocycle;
Z is selected from: a unsubstituted or substituted group selected from aryl or heteroaryl, wherein the substituted group is substituted with one or more of the following:
a) C1 -4 alkyl, unsubstituted or substituted with:
C1 -4 alkoxy, NR6R7, C3-6 cycloalkyl, aryl, heterocycle, HO, -S(O)mR6a, or -C(O)NR6R7, b) aryl or heterocycle,
c) halogen,
d) OR6,
e) NR6R7,
f) CN,
g) NO2,
h) CF3;
i) -S(O)mR6a,
j) -C(O)NR6R7, or
k) C3-C6 cycloalkyl; ; m is 0, 1 or 2;
n is 0, 1 , 2, 3 or 4;
q is 1 or 2;
r is 0 to 5, provided that r is 0 when V is hydrogen; and s is 0 or 1 ; or a pharmaceutically acceptable salt thereof.
2. A compound which inhibits farnesyl-protein transferase of the formula B :
Figure imgf000062_0001
wherein:
R1 a is selected from:
a) hydrogen,
b) aryl, heterocycle, C3-C10 cycloalkyl, C2-C6 alkenyl,
C2-C6 alkynyl, R10O-, R11S(O)m-, R10C(O)NR10-,
(R10)2NC(O)-, R10 2N-C(NR10)-, CN, NO2, R10C(O)-, N3, -N(R10)2, or R1 10C(O)NR10-,
c) unsubstituted or substituted C1 -C6 alkyl wherein the
substitutent on the substituted C1-C6 alkyl is selected from unsubstituted or substituted aryl, heterocyclic, C3-C10 cycloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, R10O-, R1 1S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N- C(NR10)-, CN, R10C(O)-, N3, -N(R10)2, and R1 1OC(O)- NR10-; R2 and R3 are independently selected from: H; unsubstituted or
substituted C1 -8 alkyl, unsubstituted or substituted C2-8 alkenyl,
unsubstituted or substituted C2-8 alkynyl, unsubstituted or substituted aryl, unsubstituted or substituted heterocycle,
Figure imgf000062_0002
wherein the substituted group is substituted with one or more of:
1) aryl or heterocycle, unsubstituted or substituted with: a) C1 -4 alkyl,
b) (CH2)pOR6,
c) (CH2)pNR6R7,
d) halogen,
e) CN,
f) aryl or heteroaryl,
g) perfluoro-C1 -4 alkyl, or
h) SR6a, S(O)R6a, SO2R6a,
2) C3-6 cycloalkyl,
3) OR6,
4) SR6a, S(O)R6a, or SO2R6a,
5) —NR6R7
Figure imgf000063_0001
Figure imgf000064_0001
15) N3,
16) F, or
17) perfluoro-C 1 -4-alkyl; or R2 and R3 are attached to the same C atom and are combined to form (CH2)u - wherein one of the carbon atoms is optionally replaced by a moiety selected from: O, S(O)m, -NC(O)-, and -N(COR10)- ;
R4 is selected from H and CH3; and any two of R2, R3 and R4 are optionally attached to the same carbon atom; R6, R7 and R7a are independently selected from: H; C1 -4 alkyl, C3-6 cycloalkyl, heterocycle, aryl, aroyl, heteroaroyl, arylsulfonyl, heteroarylsulfonyl, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) aryl or heterocycle,
c) halogen,
d) HO,
V
Figure imgf000065_0001
f) SO2R1 1 , or
g) N(R10)2; or R6 and R7 may be joined in a ring;
R7 and R7a may be joined in a ring; R6a is selected from: C1 -4 alkyl, C3-6 cycloalkyl, heterocycle, aryl, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) aryl or heterocycle,
c) halogen,
d) HO,
Figure imgf000065_0002
f) —SO2R11 , or g) N(R10)2;
R8 is independently selected from:
a) hydrogen,
b) aryl, heterocycle, C3-C10 cycloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, perfluoroalkyl, F, Cl, Br, R10O-,
R1 1S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N- C(NR10)-, CN, NO2, R1 0C(O)-, N3, -N(R10)2, or
R1 1OC(O)NR10-, and
c) C1 -C6 alkyl unsubstituted or substituted by aryl,
cyanophenyl, heterocycle, C3-C10 cycloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, perfluoroalkyl, F, Cl, Br, R10O-, R1 1S(O)m-, R10C(O)NH-, (R10)2NC(O)-, R10 2N- C(NR10)-, CN, R10C(O)-, N3, -N(R10)2, or R10OC(O)NH-; R9 is selected from:
a) hydrogen,
b) alkenyl, alkynyl, perfluoroalkyl, F, Cl, Br, R10O-,
R1 1 S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N-
C(NR10)-, CN, NO2, R10C(O)-, N3, -N(R10)2, or
R1 1OC(O)NR10-, and
c) C1 -C6 alkyl unsubstituted or substituted by perfluoroalkyl, F, Cl, Br, R10O-, R 1 1 S(O)m-, R10C(O)NR10-, (R10)2NC(O)-, R10 2N-C(NR10)-, CN, R10C(O)-, N3,
-N(R10)2, or R1 1OC(O)NR10-; R10 is independently selected from hydrogen, C1-C6 alkyl, benzyl and aryl;
R 1 1 is independently selected from C 1 -C6 alkyl and aryl;
A1 and A2 are independently selected from: a bond, -CH=CH-, -C=C-,
-C(O)-, -C(O)NR10-, -NR10C(O)-, O, -N(R10)-,
-S(O)2N(R10)-, -N(R10)S(O)2-, or S(O)m;
V is selected from:
a) hydrogen,
b) heterocycle, c) aryl,
d) C1 -C20 alkyl wherein from 0 to 4 carbon atoms are
replaced with a a heteroatom selected from O, S, and N, and
e) C2-C20 alkenyl,
provided that V is not hydrogen if A1 is S(O)m and V is not hydrogen if A1 is a bond, n is 0 and A2 is S(O)m;
W is a heterocycle;
Z is selected from: a unsubstituted or substituted group selected from aryl or heteroaryl, wherein the substituted group is substituted with one or more of the following:
a) C1 -4 alkyl, unsubstituted or substituted with:
C1 -4 alkoxy, NR6R7, C3-6 cycloalkyl, aryl, heterocycle, HO, -S(O)mR6a, or -C(O)NR6R7, b) aryl or heterocycle,
c) halogen,
d) OR6,
e) NR6R7,
f) CN,
g) NO2,
h) CF3;
i) -S(O)mR6a,
j) -C(O)NR6R7, or
k) C3-C6 cycloalkyl; ; m is 0, 1 or 2;
n is 0, 1 , 2, 3 or 4;
q is 1 or 2;
r is 0 to 5, provided that r is 0 when V is hydrogen; and s is 1 ; or a pharmaceutically acceptable salt thereof.
3. The compound according to Claim 1 of the formula A:
Figure imgf000068_0001
wherein:
R 1 a is independently selected from: hydrogen or C1 -C6 alkyl;
R1 b is independently selected from:
a) hydrogen,
b) aryl, heterocycle, cycloalkyl, R10O-, -N(R10)2 or C2-C6 alkenyl,
c) unsubstituted or substituted C1 -C6 alkyl wherein the
substitutent on the substituted C1-C6 alkyl is selected from unsubstituted or substituted aryl, heterocycle, cycloalkyl, alkenyl, R10O- and -N(R10)2; R3 and R4 are independently selected from H and CH3;
R2 is H;
Figure imgf000068_0002
or C1 -5 alkyl, unbranched or branched, unsubstituted or substituted with one or more of:
1 ) aryl,
2) heterocycle,
3) OR6,
4) SR6a, SO2R6a, or
Figure imgf000069_0001
and any two of R2, R3, R4, and R5 are optionally attached to the same carbon atom; R6, R7 and R7a are independently selected from:
H; C1 -4 alkyl, C3-6 cycloalkyl, aryl, heterocycle, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) halogen, or
c) aryl or heterocycle; R6a is selected from:
C1 -4 alkyl or C3 -6 cycloalkyl,
unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) halogen, or
c) aryl or heterocycle;
R8 is independently selected from:
a) hydrogen,
b) C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, C1 -C6
perfluoroalkyl, F, Cl, R10O-, R10C(O)NR10-, CN, NO2, (R10)2N-C(NR10)-, R10C(O)-, -N(R10)2, or R1 1OC(O)NR10-, and
c) C1-C6 alkyl substituted by C1 -C6 perfluoroalkyl, R10O-, R10C(O)NR10-, (R10)2N-C(NR10)-, R10C(O)-,
-N(R10)2, or R1 1 OC(O)NR10-; R9 is selected from:
a) hydrogen,
b) C2-C6 alkenyl, C2-C6 alkynyl, C1-C6 perfluoroalkyl, F, Cl, R10O-, R1 1 S(O)m-, R10C(O)NR10-, CN, NO2, (R10)2N-C(NR10)-, R10C(O)-, -N(R10)2, or R1 1OC(O)NR10-, and
c) C1 -C6 alkyl unsubstituted or substituted by C1 -C6
perfluoroalkyl, F, Cl, R10O-, R1 1S(O)m-, R10C(O)NR10-,
CN, (R10)2N-C(NR10)-, R10C(O)-, -N(R10)2, or
R1 1OC(O)NR10-; R10 is independently selected from hydrogen, C1-C6 alkyl, benzyl and aryl;
R 1 1 is independently selected from C1 -C6 alkyl and aryl;
A1 and A2 are independently selected from: a bond, -CH=CH-, -C≡C-,
-C(O)-, -C(O)NR1 0-, O, -N(R10)-, or S(O)m;
G is selected from H2 and O;
V is selected from:
a) hydrogen,
b) heterocycle selected from pyrrolidinyl, imidazolyl,
pyridinyl, thiazolyl, pyridonyl, 2-oxopiperidinyl, indolyl, quinolinyl, isoquinolinyl, and thienyl,
c) aryl,
d) C1 -C20 alkyl wherein from 0 to 4 carbon atoms are
replaced with a a heteroatom selected from O, S, and N, and
e) C2-C20 alkenyl, and
provided that V is not hydrogen if A1 is S(O)m and V is not hydrogen if A 1 is a bond, n is 0 and A2 is S(O)m;
W is a heterocycle selected from pyrrolidinyl, imidazolyl, pyridinyl, thiazolyl, pyridonyl, 2-oxopiperidinyl, indolyl, quinolinyl, or
isoquinolinyl; Z is mono- or bicyclic aryl. mono- or bicyclic heteroaryl, mono- or bicyclic arylmethyl, mono- or bicyclic heteroarylmethyl, mono- or bicyclic arylsulfonyl, mono- or bicyclic heteroarylsulfonyl, unsubstituted or substituted with one or two of the following:
1 ) C1 -4 alkyl, unsubstituted or substituted with: a) C1 -4 alkoxy,
b) NR6R7,
c) C3-6 cycloalkyl,
d) aryl or heterocycle,
e) HO,
f) -S(O)mR6, or
g) -C(O)NR6R7,
2) aryl or heterocycle,
3) halogen,
4) OR6,
5) NR6R7,
6) CN,
7) NO2,
8) CF3;
9) -S(O)mR6.
10) -C(O)NR6R7, or
11 ) C3-C6 cycloalkyl; m is 0, 1 or 2;
n is 0, 1 , 2, 3 or 4;
p is 0, 1, 2, 3 or 4;
r is 0 to 5, provided that r is 0 when V is hydrogen;
s is 0 or 1 ;
t is 0 or 1 ; and
u is 4 or 5; or a pharmaceutically acceptable salt thereof.
4. The compound according to Claim 1 of the formula C:
Figure imgf000072_0001
wherein: R3 and R4 are independently selected from H and CH3;
R2 is H;
Figure imgf000072_0002
or C1 -5 alkyl, unbranched or branched, unsubstituted or substituted with one or more of:
1 ) aryl,
2) heterocycle,
3) OR6,
4) SR6a, SO2R6a, or
Figure imgf000072_0003
and R2 and R3 are optionally attached to the same carbon atom; R6 and R7 are independently selected from:
H; C1 -4 alkyl, C3-6 cycloalkyl, aryl, heterocycle,
unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) halogen, or c) aryl or heterocycle;
R6a is selected from:
C1 -4 alkyl or C3-6 cycloalkyl,
unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) halogen, or
c) aryl or heterocycle; R8 is independently selected from:
a) hydrogen,
b) C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, C1 -C6
perfluoroalkyl, F, Cl, R10O-, R10C(O)NR10-, CN, NO2, (R10)2N-C(NR10)-, R10C(O)-, -N(R10)2, or R1 1OC(O)NR10-, and
c) C1-C6 alkyl substituted by C1 -C6 perfluoroalkyl, R10O-, R10C(O)NR10-, (R10)2N-C(NR10)-, R10C(O)-,
-N(R10)2, or R1 1 OC(O)NR10-; R10 is independently selected from hydrogen, C1-C6 alkyl, benzyl and aryl; R1 1 is independently selected from C1-C6 alkyl and aryl; Z is mono- or bicyclic aryl, mono- or bicyclic heteroaryl, mono- or bicyclic arylmethyl, mono- or bicyclic
heteroarylmethyl, mono- or bicyclic arylsulfonyl, mono- or bicyclic heteroarylsulfonyl, unsubstituted or substituted with one or two of the following:
1 ) C1 -4 alkyl, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) NR6R7,
c) C3-6 cycloalkyl,
d) aryl or heterocycle, e) HO,
f) -S(O)mR6, or
g) -C(O)NR6R7,
2) aryl or heterocycle,
3) halogen,
4) OR6,
5) NR6R7,
6) CN,
7) NO2,
8) CF3;
9) -S(O)mR6,
10) -C(O)NR6R7, or
1 1 ) C3-C6 cycloalkyl; m is 0, 1 or 2; and or a pharmaceutically acceptable salt thereof.
5. The compound according to Claim 1 of the formula D:
Figure imgf000074_0001
wherein: R2, R3 and R4 are independently selected from: hydrogen or C1 -C6 alkyl;
Z is mono- or bicyclic aryl, mono- or bicyclic heteroaryl,
mono- or bicyclic arylmethyl, mono- or bicyclic heteroarylmethyl, mono- or bicyclic arylsulfonyl, mono- or bicyclic heteroarylsulfonyl, unsubstituted or substituted with one or two of the following:
1 ) C1 -4 alkyl, unsubstituted or substituted with:
a) C1 -4 alkoxy,
b) NR6R7,
c) C3-6 cycloalkyl,
d) aryl or heterocycle,
e) HO,
f) -S(O)mR6, or
g) -C(O)NR6R7,
2) aryl or heterocycle,
3) halogen,
4) OR6,
5) NR6R7,
6) CN,
7) NO2,
8) CF3;
9) -S(O)mR6,
10) -C(O)NR6R7, or
1 1 ) C3-C6 cycloalkyl; m is 0, 1 or 2; and or a pharmaceutically acceptable salt thereof.
6. A compound which inhibits farnesyl-protein transferase which is: 4-[1 -(4-methoxybenzyI)imidazol-2-yl]-1 -(2-chlorophenyI)-piperazin-2- one or
4-[3-(4-methoxybenzyl)pyrid-4-yl]- 1 -(2-chlorophenyl)-piperazin-2-one or a pharmaceutically acceptable salt or optical isomer thereof.
7. A pharmaceutical composition comprising a pharmaceutical carrier, and dispersed therein, a therapeutically effective amount of a compound of Claim 1.
8. A pharmaceutical composition comprising a pharmaceutical carrier, and dispersed therein, a therapeutically effective amount of a compound of Claim 2.
9. A pharmaceutical composition comprising a pharmaceutical carrier, and dispersed therein, a therapeutically effective amount of a compound of Claim 4.
10. A pharmaceutical composition comprising a pharmaceutical carrier, and dispersed therein, a therapeutically effective amount of a compound of Claim 6.
11. A method for inhibiting farnesyl-protein transferase which comprises administering to a mammal in need thereof a
therapeutically effective amount of a composition of Claim 7.
12. A method for inhibiting farnesyl-protein transferase which comprises administering to a mammal in need thereof a
therapeutically effective amount of a composition of Claim 8.
13. A method for inhibiting farnesyl-protein transferase which comprises administering to a mammal in need thereof a
therapeutically effective amount of a composition of Claim 9.
14. A method for inhibiting farnesyl-protein transferase which comprises administering to a mammal in need thereof a
therapeutically effective amount of a composition of Claim 10.
15. A method for treating cancer which comprises administering to a mammal in need thereof a therapeutically effective amount of a composition of Claim 7.
16. A method for treating cancer which comprises administering to a mammal in need thereof a therapeutically effective amount of a composition of Claim 8.
17. A method for treating cancer which comprises administering to a mammal in need thereof a therapeutically effective amount of a composition of Claim 9.
18. A method for treating cancer which comprises administering to a mammal in need thereof a therapeutically effective amount of a composition of Claim 10.
19. A method for treating neurofibromin benign proliferative disorder which comprises administering to a mammal in need thereof a therapeutically effective amount of a composition of Claim 7.
20. A method for treating blindness related to retinal vascularization which comprises administering to a mammal in need thereof a therapeutically effective amount of a composition of Claim 7.
21. A method for treating infections from hepatitis delta and related viruses which comprises administering to a mammal in need thereof a therapeutically effective amount of a composition of Claim 7.
22. A method for preventing restenosis which comprises administering to a mammal in need thereof a therapeutically effective amount of a composition of Claim 7.
23. A method for treating polycystic kidney disease which comprises administering to a mammal in need thereof a therapeutically effective amount of a composition of Claim 7.
24. A pharmaceutical composition made by combining the compound of Claim 1 and a pharmaceutically acceptable carrier.
25. A process for making a pharmaceutical composition comprising combining a compound of Claim 1 and a pharmaceutically acceptable carrier.
PCT/US1997/005049 1996-04-03 1997-03-27 Inhibitors of farnesyl-protein transferase WO1997036592A1 (en)

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