NZ258723A - 17<beta>-carbonyl-androsta-3,5-diene-3-carboxylic acid derivatives - Google Patents

Description

New Zealand Paient Spedficaiion for Paient Number £58723 New Zealand No. 258723 International No. PCTAJS93/11241 Priority D«t©(a): Complete Specification Filad: Cfesa: (.?).

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NO DRAWINGS NEW ZEALAND PATENTS ACT 1953 COMPLETE SPECIFICATION Title of Invention: 17-alpha and 17-beta substituted acyi-3-carboxy-3,5-dienes and use in inhibiting 5-alpha-reductase Name, address and nationality of applicant(s) as in international application form: SMITHKLINE BEECHAM CORPORATION, a Pennsylvania corporation of One Franklin Plaza, Philadelphia, Pennsylvania 19103, United States of America PCI7US93/11241 17-ALPHA AND 17-BETA SUBSTITUTED ACYL-3-CARB0XY-3.5-DIENES AND USE IN INHIBITING 5-ALPHA-REDUCTASE FIELD OF TFTR INVENTION The present invention relates to certain novel 17a and 1713 substituted acyl-3-carboxy 3,5-diene steroidal compounds, pharmaceutical compositions containing these compounds, and methods for using these compounds to inhibit steroid 5-a-reductase. Also invented are novel intermediates and processes useful in preparing these compounds. 587; - ft DESCRIPTION OF RFT ATF.U ART The class of steroidal hormones known as androgens is responsible for the physical characteristics that differentiate males from females. Of the several organs that produce androgens, the testes produce these 15 hormones in the greatest amounts. Centers in the brain exert primary control over the level of androgen production. Numerous physical manifestations and disease states result when ineffective control results in excessive androgen hormone production. For example, acne vulgaris, seborrhea, female hirsutism, male pattern baldness and prostate 20 diseases such as benign prostatic hypertropy are correlated with elevated androgen levels. Additionally, the reduction of androgen levels has been shown to have a therapeutic effect on prostate cancer.

Testosterone is the principal androgen secreted by the testes and is the primary androgenic steroid in the plasma of males. It now is 25 known that 5-a-reduced androgens are the active hormones in some tissues such as the prostate and sebaceous gland. Circulating testosterone thus serves as a prohormone for dihydrotestosterone (DHT), its 5-a-reduced analogue, in these tissues but not in others such as muscle and testes. Steroid 5-a-reductase is a Nicotinamide Adenine 30 dinucleotide Phosphate(NADPH)dependent enzyme that converts testosterone to DHT. The importance of this enzyme in male development was dramatically underscored by the discovery of a genetic steroid 5-a-reductase deficiency in male pseudohermaphrodites. Imperato-McGinley, J., fit (1979), J. Steroid Diochem. 11:637-648.

Recognition of the importance of elevated DHT levels in various disease states has stimulated many efforts to synthesize inhibitors of this enzyme. Among the most potent inhibitors identified to date are 3-carboxy-androsta-3,5-diene steroidal derivatives.

A number of 5-a-reductase inhibitors are known in the art. For 5 example, 1. Bioinorpranic Chemistry. 17, pp. 372-376 (1986), by B. W. Metcalf, et al. describes the inhibition of human steroid 5a reductase (EC 1.3.1.30) by 3 androstene-3-carboxylic acids; 2. Biochemistry (1990) Vol. 29, pp. 2815-2824, by M. A. Levy, et 10 al, MA. Levy, et al. describes the mechanism of enzyme inhibitor interation in the inhibition or rat liver steroid 5a reductase by 3-androstene-3-carboxylic acids; 3. J. Med. Cheirv (1990) Vol. 33, pp. 943-950 (1990), by DA Holt, et al, describes the inhibition of steroid 5a reductase by unsaturated 3- carboxysteroids; 4. J. Steroid Biochem. Vol. 34, Nos. 1-6, pp. 571-575 (1989), by M. A. Levy, et al, describes the interaction mechanism between rat prostatic steroid 5-alpha reductase and 3-carboxy-17B-substituted steroids; . J. Med. Chem. (1990) Vol. 33, pp. 937-942, by DA Holt, et al, 20 describes the new steroid class of A ring aryl carboxylic acids; 6. TIPS (December 1989) Vol. 10, pp. 491-495, by D.W. Metcalf, et al, describes the effect of inhibitors of steroid 5a reductase in benign prostatic hyperplasia, male pattern baldness and acne; and 7. EPO Publn. No. 0 289 327. to F A. Holt, et al. (SmithKline 25 Beckxnan) describes steroidal 3-carboxylic acid derivatives as useful 5a reductase inhibitors. 8. EPO Publn. No. 0 343 954 A3, to DA.. Holt, et al., (SmithKline Beckman) describes steroidal 3-carboxylic acid derivatives as useful 5-a-reductase inhibitors. 9. EPO Publn. No. 0 465 142 Al. to G.H. Rasmusson, et al, (Merck & Co. Inc.) describes steroidal 3-carboxylic acid derivatives as useful 5a-reductase inhibitors.

However, none of the above references specifically suggest that any of 35 the novel steroidal 17a or 17B-substituted acyl-3-carboxy-androsta-3,5-diene compounds of the present invention would have utility as potent testosterone 5-a-reductase inhibitors.

WO 94/11386 PCT/US93/11241 SUMMARY OF THE INVENTION This invention relates to a compound of the formula I: z o II -C-A-R in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-12 carbon atoms: and R is substituted alkvl, cycloalkyl or aiyl where 10 a) substituted alkyl is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-12 carbon atoms substituted with one or more substituents selected from the group consisting of: aryloxy, alkoxy, acyloxy, amino, N-acylamino, nitro, cyano, oxo, halogen, -C(0)0R6 and -S(0)nR5, where r6 is hydrogen or alkyl, n is 0-2 and R5 is hydrogen, cycloalkyl, C6-Ci2aiyl, substituted cycloalkyl, substituted Cg-C^aryl, alkyl or alkyl substituted with one or more 20 substituents Belectsd from the group consisting of: alkoxy, acyloxy, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, aryloxy, -C(0)0R6, -S(0)nR?, nitro, cyano, halogen, Cg-C^aTyl, substituted C6-Ci2aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R? is hydrogen or alkyl; b) cycloalkyl is nonaromatic, unsaturated or saturated, cyclic or polycyclic C3*Ci2» optionally containing one or more heteroatoms, and optionally substituted with one or more substituents selected from the group consisting of: aryloxy, aryl, alkyl, alkoxy, acyloxy, cycloalkyl, substituted cycloalkyl, amino, N-acylamino, nitro, cyano, oxo, hydroxy, 30 halogen, -C(0)0R®, -S(0)nR^, protected -OH and alkyl substituted with one or more substituents selected from che group consisting of: alkoxy, acyloxy, Cg-Ci2aryl. substituted Cg-Cif/aryl, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, -C(0)0R®, -S(0)nR^, aryloxy, nitro, cyano, halogen and protected -OH, where R6 is hydrogen or alkyl, n is 0-2, R7 is hydrogen or alkyl and R5 is hydrogen, cycloalkyl, C6-Ci2aryl, substituted cycloalkyl, substituted Cg-C^aryl, alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, 10 cycloalkyl, substituted cycloalkyl, aryloxy, amino, N-acylamino, oxo, hydroxy, -C(0)0R6, -S(0)nR7, nitro, cyano, halogen, C6-Ci2aryl, substituted Cg-C^aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R? is hydrogen or alkyl; and c) aryl is cyclic or polycyclic aromatic C3-C12, optionally containing 15 one or more heteroatoms, provided that when C is 3 the aromatic ring contains at least two heteroatoms, and when C is 4 the aromatic zing contains at least one heteroatom, and optionally substituted with one or more substituents selected from the group consisting of: aryloxy, cycloalkyl, substituted cycloalkyl, alkyl, C6-Ci2aiyl, alkoxy, acyloxy, 20 substituted C6-Ci2aryl, amino, N-acylamino, nitro, cyano, halogen, hydroxy, -C(0)0R®, -S(0)nR5, protected -OH and alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, Cg-C^aryl, substituted Cg-C^aiyl, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, -C(0)0R®, -S(0)nR?, 25 aryloxy, nitro, cyano, halogen and protected -OH, where R6 is hydrogen or alkyl, n is 0-2, B7 is hydrogen or alkyl and 30 R5 is hydrogen, cycloalkyl, C6-Ci2arylt substituted cycloalkyl, substituted Cg-C^aryl, alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, aryloxy, amino, N-acylamino, oxo, hydroxy, -C(0)0R®, -S(0)nR?, nitro, cyano, cycloalkyl, substituted cycloalkyl, halogen, Cg-C^aryl, 35 substituted Cg-C^aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R? is hydrogen or alkyl; and pharmaceutical^ acceptable salts, hydrates, solvates and esters thereof.

WO 94/11386 PCT/US93/11241 The invention also is a method for inhibiting 5-a-reductase activity in mammals, including humans, that comprises administering to a subject an effective amount of a presently invented 5-a-reductase 5 inhibiting compound. In a further aspect of the invention there are provided novel intermediates and novel processes useful in preparing the presently invented 5-a-reductase inhibiting compounds. Included in the present invention are pharmaceutical compositions comprising a pharmaceutical carrier and compounds useful in the methods of the 10 invention. Also included in the present invention are methods of coadministering the presently invented 5-a-reductase inhibiting compounds with further active ingredients.

DETAILED DESCRIPTION OF THE TNVF.NTTON 15 The compounds of this invention that inhibit 5-a-reductase have the following Formula (I): Z o II -C-A-R in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-12 carbon atoms; and R is substituted alkyl, cycloalkyl or aryl where a) substituted alkyl is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-12 carbon atoms 25 substituted with one or more substituents selected from the group consisting of: aryloxy, alkoxy, acyloxy, amino, N-acylamino, nitro, cyano, oxo, halogen, -C(0)0R® and -S(0)nR^, where R6 is hydrogen or alkyl, n is 0-2 and R5 is hydrogen, cycloalkyl, C6-Ci2aryU substituted cycloalkyl, substituted C6-Ci2aryl. alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, aryloxy, -CCOOR®, -S(0)nR?, nitro, cyano, halogen, Cg-C^aiyl, substituted Cg-Cj^aryl and protected -OH, where R® is hydrogen or 5 alkyl, n is 0-2 and R? is hydrogen or alkyl; b) cycloalkyl is nonaromatic, unsaturated or saturated, cyclic or polycyclic C3-Ci2» optionally containing one or more heteroatoms, and optionally substituted with one or more substituents selected from the group consisting of: aryloxy, aryl, alkyl, alkoxy, acyloxy, cycloalkyl, substituted cycloalkyl, amino, N-acylamino, nitro, cyano, oxo, hydroxy, halogen, -C(0)0R6, -S(0)nR5, protected -OH and alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, Cg-Ci2aryl. substituted Cg-Ci2aryU amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, -C(0)0R®, -S(0)nR7, 15 aryloxy, nitro, cyano, halogen and protected -OH, where R6 is hydrogen or alkyl, n is 0-2, R7 is hydrogen or alkyl and 20 R5 is hydrogen, cycloalkyl, Cg-C^aryl, substituted cycloalkyl, substituted Cg-Cj^aryl. alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, cycloalkyl, substituted cycloalkyl, aryloxy, amino, N-acylamino, oxo, hydroxy, -C(0)0R6, -S(0)nR7, nitro, cyano, halogen, C6-Ci2aryl, 25 substituted Cg-C^aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R? is hydrogen or alkyl; and c) aryl is cyclic or polycyclic aromatic C3-Ci2» optionally containing one or more heteroatoms, provided that when C is 3 the aromatic ring contains at least two heteroatoms, and when C is 4 the aromatic ring contains at least one heteroatom, and optionally substituted with one or more substituents selected from the group consisting of: aryloxy, cycloalkyl, substituted cycloalkyl, alkyl, Cg-Ci2aryl» alkoxy, acyloxy, substituted Cg-Cj^aryl, amino, N-acylamino, nitro, cyano, halogen, hydroxy, -C(0)OR®, -S(0)nR®, protected -OH and alkyl substituted with 35 one or more substituents selected from the group consisting of: alkoxy, acyloxy, Cg-Ci2aryl» substituted Cg-C^aryl, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, -C(0)0R®, -S(0)nR7, aryloxy, nitro, cyano, halogen and protected -OH, where R® is hydrogen or alkyl, n is 0-2, R? is hydrogen or alkyl and R5 is hydrogen, cycloalkyl, Cg-Ci2aryl» substituted cycloalkyl, substituted Cg-C]^31^. alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, 10 aryloxy, amino, N-acylamino, oxo, hydroxy, -C(0)0R®, -S(0)nR?, nitro, cyano, cycloalkyl, substituted cycloalkyl, halogen, Cg-Ci2aTyl> substituted Cg-C^aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R? is hydrogen or alkyl; and pharmaceutically acceptable salts, hydrates, solvates and esters thereof.

Preferred among the presently invented Formula (I) compounds are those in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 2-12 carbon atoms.

Preferred among the presently invented compounds are those having 20 the following Formula (H): % C-A-R H-O-C^ ^ ^ (IX) in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-12 carbon atoms; and R is substituted alkyl, cycloalkyl or aryl where 25 a) substituted alkyl is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-12 carbon atoms substituted with one or more substituents selected from the group consisting of: aryloxy, alkoxy, acyloxy, amino, N-acylamino, nitro, cyano, oxo, halogen, -C(0)0R6 and -S(0)nR^, where R6 is hydrogen or alkyl, n is 0-2 and R5 is hydrogen, cycloalkyl, Cg-C^aryl, substituted cycloalkyl, substituted Cg-Ci2aryl, alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, 5 aryloxy, -C(0)0R®, -S(0)nR7, nitro, cyano, halogen, Cg-Ci2aryl» substituted Cg-Ci2aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R7 is hydrogen or alkyl; b) cycloalkyl is nonaromatic, unsaturated or saturated, cyclic or polycyclic C3~Cx2> optionally containing one or more heteroatoms, and optionally substituted with one or more substituents selected from the group consisting of: aiyloxy, aryl, alkyl, alkoxy, acyloxy, cycloalkyl, substituted cycloalkyl, amino, N-acylamino, nitro, cyano, oxo, hydroxy, halogen, -C(0)0R®, -S(0)nR^, protected -OH and alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, 15 acyloxy, Cg-Ci2aryl, substituted C6-Ci2aryl, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, -C(0)0R®, -S(0)nR7, aryloxy, nitro, cyano, halogen and protected -OH, where R® is hydrogen or alkyl, n is 0-2, R7 is hydrogen or alkyl and R5 is hydrogen, cycloalkyl, Cg-C^aryl, substituted cycloalkyl, substituted Cg-C^aryl, alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, 25 cycloalkyl, substituted cycloalkyl, aryloxy, amino, N-acylamino, oxo, hydroxy, -C(0)0R®, -S(0)nR7, nitro, cyano, halogen, Cg-C^aiyl, substituted Cg-Ci2aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R7 is hydrogen or alkyl; and c) aryl is cyclic or polycyclic aromatic C3-Ci2» optionally containing 30 one or more heteroatoms, provided that when C is 3 the aromatic ring contains at least two heteroatoms, and when C is 4 the aromatic ring contains at least one heteroatom, and optionally substituted with one or more substituents selected from the group consisting of: aryloxy, cycloalkyl, substituted cycloalkyl, alkyl, Cg-Ci2aryl, alkoxy, acyloxy, 35 substituted Cg-Ci2aryl, amino, N-acylamino, nitro, cyano, halogen, hydroxy, -C(0)0R®, -S(0)nR^, protected -OH and alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, C6-Ci2aryl» substituted Cg-C^aiyl, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, -C(0)0R®, -S(0)nR7, aryloxy, nitro, cyano, halogen and protected -OH, where R® is hydrogen or alkyl, n is 0-2, R7 is hydrogen or alkyl and R5 is hydrogen, cycloalkyl, C6-Ci2aryl, substituted cycloalkyl, substituted C6-Ci2aryl» alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, aiyloxy, amino, N-acylamino, oxo, hydroxy, -C(0)0R®, -S(0)nR7, nitro, cyano, cycloalkyl, substituted cycloalkyl, halogen, Cg-C^aryl, substituted Cg-Ci2aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R7 is hydrogen or alkyl; and pharmaceutically acceptable salts, hydrates, solvates and esters thereof.

Preferred among the presently invented Formula II compounds are those in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 2-12 carbon atoms.

Preferred among the presently invented Formula n compounds are those in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-6 carbon atoms and R is a) a linear or branched, saturated or unsaturated hydrocarbon chain containing 1-12 carbon atoms substituted with one or more substituents selected from the group consisting of: -OC6-Ci2aryl» carboxy, -OCi-C4alkyl, halogen and -S(0)I1R7, where n is 0-2 and E7 is hydrogen or C 1^4 alkyl; b) C3-C8 nonaromatic, unsaturated or saturated, cycloalkyl, optionally substituted with one or more substituents selected from the group consisting of: -OCg-Ci2aryl» -(CH2)mOH, -OCi-C4alkyl, Cg-C^aiyl, Ci-C4alkyl, trifiuoromethyl, halogen, -(CH2)pCOOH, -S(0)nR7 and protected -OH, where m is 0-4, p is 0-3, n is 0-2 and R7 is hydrogen or C 1.4alkyl; or c) C4-Ci2aryl' optionally containing one or more heteroatoms, provided that when C is 4 the aromatic ring contains at least one ' heteroatom, and optionally substituted with one or more substituents selected from the group consisting of: -OCg-C^aryl, -(CH2)mOH, C6-Ci2aryl, C1-C4 alkyl,-0Ci-C4alkyl, trifluoromethyl, halogen, -(CH2)pCOOH, -S(0)nR7 and protected -OH, where m is 0-4, p is 0-3, n is 0-2 and R7 is hydrogen or C 1.4alkyl; and pharmaceutically acceptable salts, hydrates, solvates and esters thereof.

Preferred among said Formula II compounds are those in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from2-6 carbon atoms.

Particularly preferred among Formula II compounds are those in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-4 carbon atoms and R is a) a linear or branched hydrocarbon chain containing 1-6 carbon atoms substituted with one or more halogens, b) C3-C8 nonaromatic, unsaturated or saturated cycloalkyl, optionally substituted with one or more substituents selected from the group consisting of: halogen, thio, methylsulfonyl, methylsulfoxyl, methylthio, carboxy, hydroxy, trifluoromethyl, phenoxy and methoxy or c) C4-Ci2aryl, optionally containing one more heteroatoms, provided that when C is 4 the aromatic ring contains at least one heteroatom, and optionally substituted with one or more substituents selected from the group consisting of: halogen, thio, methylsulfonyl, methylsulfoxyl, methylthio, car boxy, hydroxy, trifluoromethyl, phenoxy and methoxy and pharmaceutically acceptable salts, hydrates, solvates and esters thereof.

Preferred among said Formula II compounds are those in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 2-4 carbon atoms.

Particularly preferred among Formula II compounds are those in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-4 carbon atoms and R is a) CF3 b) C5-C7 cycloalkyl or c) C4-C12 aryl. optionally containing one or more heteroatoms, provided that when C is 4 the aromatic ring contains at least one heteroatom, and optionally substituted with one or more substituents selected from the group consisting of: halogen, thio, methylsulfonyl, methylsulfoxyl, methylthio, carboxy, hydroxy, trifluoromethyl, phenoxy and methoxy and pharmaceutically acceptable salts, hydrates, solvates and esters thereof.

Preferred among said Formula II compounds are those in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 2-4 carbon atoms.

Particularly preferred among formula II compounds are: 17B-(phenylpropylcarbonyl)-androsta-3,5-diene-3-carboxylic acid, 10 17B-(benzylcarbonyl)-androsta-3,5-diene-3-carboxylic acid, 17B-(cyclohexylethylcarbonyl)-androsta-3,5-diene-3-carboxylic acid, acid. 17B-(phenethylcarbonyl)-androsta-3,5-diene-3-carboxylic acid, 17B-( 5,5,5-trifluoro- 1-oxopentyl )-androsta-3,5-diene-3-carboxylic 17B-(2-cyclohexyl-l-oxoethyl)-androsta-3,5-diene-3-carboxylic acid, 17B-(3-methyl-3-phenyl-l-oxobutyl)-androsta-3,5-diene-3-carboxylic acid, 17B-(3-(4-methoxy phenyl)-l-oxopropyl)-androsta-3,5-diene-3-20 carboxylic acid, 17B-(3-(4-hydroxy phenyl)-l-oxopropyl)-androsta-3,5-diene-3-carboxylic acid, 17B-(4-fluorophenethylcarbonyl)-androst-3,5-diene-3-carboxylic acid and 17B-(2,6-difluorobenzylcarbonyl)-androsta-3,5-diene-3-carboxylic acid and pharmaceutically acceptable salts, hydrates, solvates and esters thereof.

The term "a", as used herein, follows standard chemical 30 terminology and means down or that the corresponding substituent is attached below the plane of the paper.

The term "B", as used herein, follows standard chemical terminology and means up or that the corresponding substituent is attached above the plane of the paper.

By the term "protected hydroxy" or "protected -OH" as used herein, is meant the alcoholic or carboxylic-OH groups which can be protected by conventional blocking groups in the art as described in "Protective Groups In Organic Synthesis" by Theodora W. Greene, Wiley-Interscience, 1981, New York. Preferred are the triorganosilyl groups, e.g. t-butyldimethylsilyl, phenyldimethylsilyl, diphenyimethylsilyl, and the like.

As used herein Cx-Cy is meant a moiety having from x to y carbons.

By the term "aryl" as used herein, unless otherwise defined, is meant cyclic or polycyclic aromatic C3-C12, optionally containing one or more heteroatoms, provided that when C is 3 the aromatic ring contains at 10 least two heteroatoms and when C is 4 the aromatic ring contains at least one heteroatom, and optionally substituted with one or more substituents selected from the group consisting of: alkyl, Cg-Ci2 aryl, substituted cycloalkyl, substituted Cg-Ci2aryl» aryloxy, hydroxy, alkoxy, cycloalkyl, acyloxy, amino, N-acylamino, nitro, cyano, halogen, 15 -C(0)0R®, -S(0)nR5, protected -OH and alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, Cg-C^aryl, substituted Cg-C^aiyl, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, -C(0)0R®, -S(0)nR7, aryloxy, nitro, cyano, halogen, and protected -OH, where R® is hydrogen or alkyl, n is 20 0-2, R7 is hydrogen or alkyl and R«> is hydrogen, cycloalkyl, Cg-Ci2aiyl. substituted cycloalkyl, substituted Cg-C^aryl, alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, aryloxy, amino, N-acylamino, oxo, hydroxy, -C(0)0R®, -S(0)nR7, nitro, cyano, cycloalkyl, substituted 25 cycloalkyl, halogen, Cg-Ci2aryl» substituted Cg-Cj^aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R7 is hydrogen or alkyl.

Examples of aryl and substituted aiyl substituents as used herein include: phenyl, naphthyl, furanyl, biphenyl, hydroxyphenyl, pyridyl, 30 fluorophenyl, dihydroxyphenyl, methylenedioxyphenyl, dimethylhydroxyphenyl, methoxyphenyl, trifluoromethylphenyl carboxymethylphenyl, phenoxyphenyl, methyl sulfonylphenyl, methylthiophenyl, difluorophenyl, carboxyphenyl, methylsulfoxylphenyl and thiophenyl.

Preferred examples of aryl and substituted aryl substituents as used herein include: phenyl, 4-fluorophenyl, 2,6-difluorophenyl, 1-naphthyl, 4-biphenyl, 4-methoxyphenyl, 4-phenoxyphenyl, 4- WO 94/11386 PCT/US93/11241 trifluoromethylphenyl, 4-methylsulfonylphenyl, 4-methylthiophenyl, 3,5-difluorophenyl, 4-hydroxyphenyl, 4-carboxyphenyl, 2-furanyl, 4-methylsulfoxylphenyl, 3-thiophenyl, 2-pyridyl, 3-pyridyl, 4-pyridyl and 3,4-methylenedioxyphenyl.

By the term "Cg-C^ aryl" as used herein, unless otherwise defined, is meant phenyl, naphthyl, 3,4-methylenedioxyphenyl, pyridyl, or biphenyl.

By the term "substituted" as used herein, unless otherwise defined, is meant that the subject chemical moiety has one or more 10 substituents selected from the group consisting of: hydroxy alkyl, alkoxy, acyloxy, alkyl, amino, N-acylamino, hydroxy, -(CH2)gC(0)0R®, -S(0)nR7, nitro, cyano, halogen, trifluoromethyl and protected -OH, where g is 0-6, R® is hydrogen or alkyl, n is 0-2, and R7 is hydrogen or alkyl.

By the term "alkoxy" as used herein is meant -Oalkyl where alkyl is as described herein including -OCH3 and -OC(CH3)2CH3.

The term "cycloalkyl" as used herein unless otherwise defined, is meant a nonaromatic, unsaturated or saturated, cyclic or polycyclic C3-Ci2.

Examples of cycloalkyl and substituted cycloalkyl substituents as used herein include: cyclohexyl, 4-hydroxy-cyclohexyl, 2-ethylcyclohexyl, propyl 4-methoxycyclohexyl, 4-methoxycyclohexyl, 4-carboxycyclohexyl and cyclopentyl.

By the term "acyloxy" as used herein is meant -0C(0)alkyl where 25 alkyl is as described herein. Examples of acyloxy substituents as used herein include: -0C(0)CH3, -0C(0)CH(CH3)2 and -0C(0)(CH2)3CH3.

By the term "N-acylamino" as used herein is meant -NCH)C(0)alkyl, where alkyl is as described herein. Examples of N-acylamino substituents as used herein include: -N(H)C(0)CH3, 30 -N(H)C(0)CH(CH3)2 and -N(HX)(0)(CH2)3CH3.

By the term "aryloxy" as used herein is meant -OC6-Ci2aryl where Cg-Ci2aryl is phenyl, naphthyl, 3.4-methylenedioxyphenyl, pyridyl or biphenyl optionally substituted with one or more substituents selected from the group consisting of: alkyl, hydroxyalkyl, alkoxy, 35 trifuloromethyl, acyloxy, amino, N-acylamino, hydroxy, -(CH2)gC(0)0R®, -S(0)nR7, nitro, cyano, halogen and protected -OH, where g is 0-6, R® is hydrogen or alkyl, n is 0-2 and R7 is hydrogen or alkyl. Examples of aryloxy substituents as used herein include: phenoxy, 4-fluorophenyloxy and biphenyloxy.

By the term "heteroatom" as used herein is meant oxygen, nitrogen or sulfur.

By the term "halogen" as used herein is meant a substituent selected from bromide, iodide, chloride and fluoride.

By the term "alkyl" and derivatives thereof and in all carbon chains as used herein is meant a linear or branched, saturated or unsaturated hydrocarbon chain having Cj-Ci2 carbon atoms. Examples 10 of alkyl substituents as used herein include: -CH3, -CH2-CH3, -CH2-CH2-CH3) -CH(CH3)2, -C(CH3)3, -(CH2)3-CH3, -CH2-CH(CH3)2 and -CH(CH3)-CH2-CH3, -CH=CH2.

By the term "treating" and derivatives thereof as used herein, is meant prophylatic or therapeutic therapy.

By the term "metal-catalyzed coupling reaction" as used herein is meant that the prepared 3-trifluoromethyl sulfonylate or 3-fluorosulfonylate compound is reacted in a suitable organic solvent; preferably dimethylsulfoxide, toluene, dichloroethane, dimethylformamide or THF; with a base, preferably a tertiaryamine 20 base such as triethylamine, pyridine or tributylamine; a C^-Cg alcohol (when an ester is desired) or a Cj-Cg carboxylic acid salt, preferably KOAc (when an acid is desired) and a phosphine, such as bis(diphenylphosphino)alkane, preferably 1,3 bis(diphenylphosphino)propane, tri-o-tolyphosphine or 1,1-25 bis(diphenylphosphino)ferrocene (dppf)) and a metal catalyst, preferably a palladium catalyst such as palladium (II) acetate or palladium (II) chloride or bis(triphenylphosphine) palladium II acetate, thereby forming a metalated complex, and subsequently adding a coupling reagent.

By the term "coupling reagent" as used herein is meant a compound which is capable of reacting with said metalated complex to form an ester or a carboxylic acid substituent. Carbon monoxide is a preferred coupling reagent which when added to the metal-catalyzed coupling reaction, as described herein, yields the desired ester or 35 carboxylic acid group.

Compounds of Formula (I) and compounds of Formula (V) are included in the pharmaceutical compositions of the invention and used PCI7US93/11241 in the methods of the invention. Where a -COOH or -OH group is present, pharmaceutically acceptable esters can be employed, for example methyl, ethyl, pivaloyloxymethyl, and the like for -COOH, and acetate maleate and the like for -OH, and those esters known in the art 5 for modifying solubility or hydrolysis characteristics for use as sustained release or prodrug formulations.

The term "a-receptor antagonist", as used herein, refers to a known class of alpha-andrenergic receptor antagonist comounds, such as 10 described in Lafferty, et al. U.S. Patent No. 4,963,547, which are utilized in treating vascular disorders such as diabetes, cardiovascular disease, benign prostatic hypertrophy and ocular hypertension.

Preferred alpha-andrenergic receptor antagonists for use in the compositions and methods of the invention include amsulosin, terazosin, 15 doxazosin, alfuzosin, indoramin, prazosin, 7-chloro-2-ethyl-3,4,5,6-tetrahydro-4-methylthieno[4,3,2-ef][3]-benzazepine and 8- {3-[4-( 2-methoxyphenyl)- l-piperazinyl]-propylcarbamoyl}-3-methyl-4-oxo-2-phenyl-4H-l-benzopyran.

By the term "amsulosin" as used herein is meant a compound of 20 the structure H HjNC^S OCH2CH3 and salts, hydrates and solvates thereof.

Chemically, amsulosin is designated as (-MR)-5-[2-[[2-(0-ethoxyphenoxy)ethyl]amino]propyl]-2-methcxybenzenesulfonaxnide. 25 Amsulosin is disclosed in U.S. Patent Number 4,703,063 and claimed in U.S. Patent Number 4,987,152 as being useful in treating lower urinary tract dysfunction.

By the term "terazosin" as used herein is meant a compound of the structure ch^Y^YnY CH30'^^\^'N o II j^N'C N 2) NH2 and salts, hydrates and solvates thereof.

Chemically, terazosin is designated as l-(4-amino-6,7-dimethoxy-2 quinazolinyl)-4-[(tetrahydro-2-furoyl)carbonyl]piperazine. Terazosin is disclosed in U.S. Patent Number 4,251,532.

By the term doxazosin as used herein is meant a compound of the formula H,CO KjGO T0DO and salts, hydrates and solvates thereof.

Chemically "doxazosin" is designated as l-(4-amino-6,7- dimethoxy-2-quinazolinyl)-4-[(2,3-dihydro-l,4-benzodioxin-2-yl)carbonyl]-piperazine.

Doxazosin is discolsed in U.S. Patent Number 4,188,390.

By the term "alfuzosin" as used herein is meant a compound of the 15 formula CH3 NHZ and salts, hydrates and solvates thereof.

Chemically alfuzosin is designated as N-[3-[(4-amino-6,7-dimathoxy-2-quinazolinyl)methylamino]propyl]tetrahydro-2-20 furancarboxamide.

Alfuzosin is disclosed in U.S. Patent Number 4,315,007.

By the term "indoramin" as used herein is meant a compound fo the formula - 16 94/11386 H and salts, hydrates and solvates thereof.

Chemically indoramin as designated N-[[l-[2-(lH-indol-3-yl )ethyl]-4-piperidinyl]benzamine.

Indoramin is disclosed in U.S. Patent Number 3,527,761.

By the term "prazosin" as used herein is meant a compound of the NH2 and salts, hydrates and solvates thereof.

Chemically prazosin is designated as l-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furanylcarbonyl)piperazine.

Prazosin is disclosed in U.S. Patent Number 3,511,836. "7-chloro-2-ethyl-3,4,5,6-tetrahydro-4-methylthieno[4t3,2-efi-[3]ben za zepine" as used herein is meant a compound of the structure and salts, hydrates and solvates thereof. 7-chloro-2-ethyl-3,4,5,6-tetrahydro-4-methylthieno[4,3,2-ef]-[3]benzazepine is disclosed in U.S. Patent No. 5,006,521. Additionally, all compounds disclosed in U.S. Patent No. 5,006,521 as alpha-adrenergic receptor antagonist are preferred alpha-adrenergic receptor antagonist as used herein. "8-{3-[4-(2-methoxyphenyl)-l-piperazinyl]-propylcarbamoyl}-3-methyl-4-oxo-2-phenyl-4H-l-benzopyran" as used herein is meant a compound of the structure formula CH2CH3 I-CHj 0 and salts, hydrates and solvates thereof. 8-{3-[4-(2-methoxyphenyl)-l-piperazinyl]-propylcarbamoyl}-3-methyl-4-oxo-2-phenyl-4H-l-benzopyran is disclosed in EPO Publn. No. 0558245 Al, to Leonardi, et al., (Recordati S.A.).

Additionally all compopunds disclosed in EPO Publn. No. 0558245 Al, as alpha-adrenergic receptor antagonists are preferred alpha-adrenergic receptor antagonists as used herein.

Persons skilled in the art can readily determine if a compound 10 other than one specifically referred to herein is a alpha-andrenergic receptor antagonist by utilizing the assay described in Lafferty I. Thus, all such compounds are included within the scope of the term "alpha-andrenergic receptor antagonist" as used herein.

By the term "minoxidil" as used herein is meant the compound of the formula: O / /NH2 chemically minoxidil is designated as 2,4-pyrimidineadiamine, 6-(l-piperidinyl)-,3-03ride. Minoxidil is the active ingredient in Rogaine® 20 which is sold as topical solution for stimulating hair growth by the Upjohn Company, Kalamazoo, Michigan.

The term "aromatase inhibitor", as used herein, refers to a known class of compounds, steroidal and non-steroidal, which prevent the 25 conversion of androgens to estrogens, such as described in Gormley et al.

International Publication Number WO 92/18132. Aromatase inhibitors are disclosed in Gormley et al. as having utility in treating benign prostatic hyperplasia when used in combination with a 5-a-reductase inhibitor.

A preferred aromatase inhibitor for use in the compositions and methods of the invention 4-(5,6,7,8-tetrahydroimidazo-[l,5-a]pyridin-5-yl)benzonitrile (fadrazole). Fadrazole is disclosed in U.S. Patent No. 4,728,645. Additionally, all compounds disclosed in Gormley, et al. International Publication No. WO 92/18132 as having aromatase 10 inhibiting activity are preferred aromatase inhibitors as used herein.

As used herein, when a 5-a-reductase inhibitor, as described herein and a further active ingredient or ingredients are utilized together, said 5-a-reductase inhibitor car. be co-administered with said further active ingredient or ingredients.

By the term "co-administering" and derivatives thereof as used herein is meant either simultaneous administration or any manner of separate sequential administration of a 5-a-reductase inhibiting compound, as described herein, and a further active ingredient or ingredients, such as other compounds known to treat the disease states 20 of acne vulgaris, seborrhea, female hirsutism, male pattern baldness, benign prostate hypertrophy or prostatic adenocarcinoma or compounds known to have utility when used in combination with 5-a-reductase inhibitors. Preferably, if the administration is not simultaneous, the compounds are administered in a clo3e time proximity to each other. 25 Furthermore, it does not matter if the compounds are administered in the same dosage form, e.g. one compound may be administered topically and another compound may be administered orally.

Formula (II) compounds are prepared as shown in Schemes I, II and HI wherein A is as described in Formula (II). As used herein R® is 30 R or moieties which can be converted to those of R by chemical reactions readily is known to those of skill in the art, such as described in Derek Barton and U.D. Ollis, Comprehensive Organic Chemistry: The Synthesis and Reactions of Organic Compounds. Pub: Pergamon Press (1979), provided that R® does not include any such moieties that render 35 inoperative the Schemes I, II or III processes. As demonstrated in the following Examples, reactions to convert R® to R are performed on products of the synthetic pathways of Schemes I, II or III or where appropriate or preferable, on certain intermediates in these synthetic pathways. For example, methylthio substituents can be converted to the methylsulfonyl by oxidation. Methoxy substituents can be converted to the hydroxy by treatment with boron tribromide. Hydroxy substituents 5 can be converted to the carboxy by reaction with a trihaloalkylsulfonic anhydride, such as trifluoromethanesulfonic anhydride, followed by a metal catalyzed coupling reaction.

The novel compounds of Formula (II) of the present invention can 10 be prepared by methods outlined in schemes 1-3 below and in the examples from the known and readily available steroid acid of the structure (X): (X) or from the known steroid acid o -NHtBu H02C which is prepared as described in U.S. Patent No. 5,017,568.

Scheme I o II 8 (b) ? . C-A-R (c) O II a (d) Scheme I outlines formation of Formula II compounds. As used in scheme I compound (b) is prepared from compound (a) by treating (a) with halogen-Vilsmeier reagent, described hereinbelow, in an appropriate solvent, preferably methylene chloride followed by quenching with excess Grignard reagent, described hereinbelow. The 3-cyano derivative (c) is produced by treating (b) with a cyanating reagent, described hereinbelow, in an appropriate solvent, preferably 5 dimethylformamide. The 17-acyl derivative (c) is saponified, described hereinbelow, to yield compounds (d).

Scheme II in Scheme IIA and R® are as described in Formula IV, Rl is CF3O2SO-or FO2SO-. As used in scheme II in the alkylation process (step C), the pyridylthio ester is reacted with an Li-AR^ or an XMgAR® (X=C1, Br) Grignard reagent (as described hereinbelow), preferably phenylpropylmagnesiwn bromide, benzy]magnesium chloride, cyclohexylethylmagnesium bromide, 4-fluorophenethyhnagnesium bromide, phenethylmagnesium bromide, 2,2-5 dimethylphenethylmagnesium bromide, cyclohexylmethylmagnesium bromide, 4,4,4 trifluorobutylmagnesium bromide, 2-(4-methoxypheny 1 )ethylmagnesium chloride or 2,6-difluorobenzylmagnesium bromide in tetrahydrofuran to form the desired product, preferably 17C-(phenylpropylcarbonyl)-androsta-3,5-10 diene-3-carboxylic acid, 17B-(benzylcarbonyl)-androsta-3,5-diene-3-carboxylic acid, 17B-(cyclohexylethylcarbonyl)-androsta-3,5-diene-3-carboxylic acid, 17[5-(4-fluorophenethylcarbonyl)-androsta-3,5-diene-3-carboxylic acid, 17B-(phenethylcarbonyl)-androsta-3,5-diene-3-carboxylic acid, 17 B-(3-methyl-3-phenyl- l-oxobutyl)-androsta-3,5-diene-3-carboxylic 15 acid, 17B-(2-cyclohexyl-l-oxoethyl)-androsta-3,5-diene-3-carboxylic acid, 17B-( 5,5,5-trifluoro- l-oxopentyl)-androsta-3,5-diene-3-carboxylic acid, 17 B-(3-(4-methoxy phenyl )-l-oxopropyl)-androsta-3,5-diene-3-carboxylic acid and 17B-(2,6-difluorobenzylcarbonyl)-androsta-3,5-diene-3-carboxylic acid respectively, in one or two steps.

In Route 1, the enone acid (a) is converted to the 3-trifluoromethylsulfonylate or 3-fluorosulfonylate derivative (e) (step A) by treating (a) with trifluoromethylsulfonyl anhydride or fluorosulfonic anhydride and an amine base, such as pyridine, preferably 2,5 di-t-butyl-25 3-methyl-pyridine, in an appropriate organic solvent, preferably dichloromethane at about -20°C to 20°C, preferably 0°.

The activated ester (f) is produced (step B) by treating (e) with 2,2-dithiopyridyl and triphenylphosphine in an appropriate organic solvent solution preferably, tetrahydrofuran/toluene at room temperature for 30 about 8-14 hours.

The 17-acyl derivative (g) is produced (step C) by treating (f) with a Grignard reagent, described hereinbelow, in tetrahydrofuran or diethyl ether solvent, at a temperature of about -50 to -70°, for 1-16 hours.

The 3-alkyl ester (j) is produced (step D) by treating (g) under 35 carbonylation conditions, preferably by bubbling carbon monoxide gas through a solution of (g) in an appropriate organic solvent, preferably methanol, containing palladium acetate catalyst, triphenylphosphine, and a tertiary organic amine preferably triethylamine at about room temperature for 1-16 hours. Compound (j) next is reacted with a suitable base, preferably potassium carbonate and acidified (step F) to yield compounds (d).

Compounds (d) can also be produced (step H) by treating (g) under carboxylation conditions, preferably by bubbling carbon monoxide gas through a solution of (g) in appropriate non-alcoholic solvent, preferably DMF, containing a palladium catalyst, preferably bis(triphenylphoshine)palladium II diacetate, and a carboxylate salt, 10 preferably potassium acetate, preferably at increased temperatures.

Note that, if R® is aroyl, which also contains a protected hydroxy group, e.g. with dimethyl-t-butyl-silyl, this may be removed by treating with tetrabutylammonium floride in an appropriate, organic solvent, preferably tetrahydrofuran with a small amount of added acetic acid, 15 from 0°C to reflux for 1-4 hours prior to carrying out step F.

Route 2 involves converting the starting steroidal acid (a) to the 3-trifluoromethylsulfonylate or the 3-fluorosulfonylate derivative (e) by the above-described step A; carbonylating (e) to (h) by step D; forming the activated 2-pyridylthio ester (i) by step B; forming the 17-acyl compound 20 (j) by step C; and hydrolyzing the 3-ester to the 3 acid final product (d) by step F.

Route 3 involves converting the starting steroid acid (a) to the 3-trifluoromethylsulfonylate or the 3-fluorosulfonylate derivative (e) by the above-described step A. The 3-cyano derivative (k) is produced (step E) 25 by treating (e) with a cyanating agent (as described hereinbelow) in an appropriate solvent, preferably dimethylformamide. The activated 2-pyridylthio derivative (1) is prepared from (k) by step B. Forming the 17-acyl compound (c) involves reacting (1) by step C. The 17-acyl derivative (c) is saponified (step G) (as described herein) to yield compounds (d).

PCf/US93/11241 Scheme in -NHtBu HOjC PhMe; f j T ) - xXr MeOjC' CHO (1) MAR (M=MgBr) grignard reagent (m) (n) (o) NaClOjj, t-BuOH, H20, NaH2P04 2-methyl-2-butene, THF Scheme m outlines formation of Formula 11 compounds.

As used in Scheme III, compound (1) is prepared from compound (k) by treatment with phosphorusoxychloride in toluene followed by treatment with methanol.

Formula (1) compounds are reacted with a reducing agent, preferably diisobutylaluminum hydride, to yield formula (m) compounds.

Formula (n) compounds are produced by treating formula (m) compounds with a Grignard Reagent (as described in Scheme II) in tetrahydrofuran or diethylether solvent, at a temperature of about -50°C to -70°C, for 1-16 hours.

WO 94/11386 PCT/US93/11241 Formula (o) compounds are prepared by oxidation of formula (n) compounds. Preferably said oxidation will utilize tetrapropylammonium peruthenate or a Jone's reagent.

Formula (d) compounds are prepared by oxidation of formula (o) 5 compounds. Preferably said oxidation will utilize sodium chlorite.

As used herein Grignard reagents of the type, XMgAR®, for all of the species included within the scope of this invention, are available or can be made readily by one skilled in the art.

For example, where a AR® is hydroxyphenyl, this can be derived 10 by starting with an appropriate bromophenol, e.g. p-bromophenol, protecting the phenolic-OH with a conventional blocking group, e.g. triorganosilyl, i.e. t-butyldimethylsilyl, carrying out the Grignard reaction and then deblocking the silyl group by the use of, e.g. refluxing aqueous tetrabutylammonium fluoride.

For a AR® being hydroxyethylphenyl, the same blocking procedure can be analogously conducted starting with the appropriate hydroxyalkyl bromophenol, e.g. p-hydroxymethylbromobenzene, or p-hydroxymethylbromobenzene, or p-hydroxyethylbromobenzene.

Where a AR® is carboxyphenyl, this can be obtained by the 20 chromic acid oxidation of the appropriate hydroxymethylbenzene, e.g. p-bromo-hydroxymethylbenzene, formed as described above.

Where a AR® is -Oalkyl, the appropriate bromo-Oalkyl benzene, e.g. p-methoxybromobenzene, is utilized for the Grignard reaction.

Other halo substituted benzenes to form the appropriate Grignard 25 reagent useful in the instant invention will be obvious to one skilled in the art from this disclosures.

Formula 1 compounds in which Z is in the a position are prepared from compounds which contain the corresponding (3 substituent by the General Method below.

General Method A To a stirrred solution cf a substituted 17P steroidal 5a-reductase inhibiting compound of Formula (II) in an appropriate solvent, preferably ethylene glycol or dimethyl sulfoxide, is added a base such as 5 a hydroxide or alkoxide base, preferably sodium hydroxide, potassium hydroxide or sodium methoxide, at a temperature over 100°C preferably at reflux temperatures to yield the corresponding a epimer, after isolation and work up.

In determining the appropriate solvent for conducting the 10 epimerization, dimethyl sulfoxide or other non-reactive high boiling solvents are preferred when the starting 17B 5a-reductase inhibiting steroidal compound contains reactive substituents or reactive unsaturated bonds that are, for example, subject to nucleophilic attack and ethylene glycol, or other reactive high boiling solvents can be used 15 when the reactivity of the substituents or any unsaturated bonds of the starting 17B 5a-reductase inhibiting steroidal compound is not a consideration.

Also within the scope of the present invention are the ketone reduction products of Formula (I) compounds, the secondary alcohols of 20 the formula: (V) wherein Y is a or B OH I -C-A-R a linear or branched, saturated or unsaturated hydrocarbon chain 25 containing from 1-12 carbon atoms; and R is substituted alkyl, cycloalkyl or aryl, where a) substituted alkyl is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-12 carbon atoms substituted with one or more substituents selected from the group 30 consisting of: aryloxy, alkoxy, acyloxy, amino, N-acylamino, nitro, cyano, oxo, halogen, -C(0)0R® and -S(0)nR^, where R® is hydrogen or alkyl, n is 0-2 and R5 is hydrogen, cycloalkyl, Cg-C^aryl, substituted cycloalkyl, 5 substituted C6*Ci2aTyl» alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, aryloxy, -C(0)0R®, -S(0)nR7, nitro, cj'ano, halogen, C6-Ci2aryl» substituted Cg-Ci2aryl and protected -OH, where R® is hydrogen or 10 alkyl, n is 0-2 and R7 is hydrogen or alkyl; b) cycloalkyl is nonaromatic, unsaturated or saturated, cyclic or polycyclic C3-Ci2» optionally containing one or more heteroatoms, and optionally substituted with one or more substituents selected from the group consisting of: aryloxy, aryl, alkyl, alkoxy, acyloxy, cycloalkyl, substituted cycloalkyl, amino, N-acylamino, nitro, cyano, oxo, hydroxy, halogen, -C(0)0R®, -S(0)nR^, protected -OH and alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, Cg-C^aiyl, substituted Cg-Ci2aryl, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, -C(0)0R®, -S(0)nR7, 20 aryloxy, nitro, cyano, halogen and protected -OH, where R6 is hydrogen or alkyl, n is 0-2, R7 is hydrogen or alkyl and 25 R5 is hydrogen, cycloalkyl, C6-Ci2aryl, substituted cycloalkyl, substituted Cg-Ci2aTyl» alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, cycloalkyl, substituted cycloalkyl, aryloxy, amino, N-acylamino, oxo, hydroxy, -C(0)0R®, -S(0)nR7, nitro, cyano, halogen, Cg-C^aryl, 30 substituted Cg-C^aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R7 is hydrogen or alkyl; and c) aryl is cyclic or polycyclic aromatic C3-C121 optionally containing one or more heteroatoms, provided that when C is 3 the aromatic ring contains at least two heteroatoms, and when C is 4 the aromatic ring contains at least one heteroatom, and optionally substituted with one or more substituents selected from the group consisting of: aryloxy, cycloalkyl, substituted cycloalkyl, alkyl, C6*Ci2aryl» alkoxy, acyloxy, substituted Ce-Ci2aryl. amino, N-acylamino, nitro, cyano, halogen, hydroxy, -C(0)0R®, -S(0)nR®, protected -OH and alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, Ce-Ci2aryl. substituted Cg-C^aryl, amino, N-acylamino, oxo, 5 hydroxy, cycloalkyl, substituted cycloalkyl, -C(0)0R®, -S(0)nR7, aryloxy, nitro, cyano, halogen and protected -OH, where R® is hydrogen or alkyl, n is 0-2, R7 is hydrogen or alkyl and R5 is hydrogen, cycloalkyl, C6-Ci2aryl» substituted cycloalkyl, substituted Cg-Cj^ryl. alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, aryloxy, amino, N-acylamino, oxo, hydroxy, -C(0)0R6, -S(0)nR7, nitro, 15 cyano, cycloalkyl, substituted cycloalkyl, halogen, Cg-Cj^aryl. substituted C£-Ci2aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R7 is hydrogen or alkyl; and phazxnaceutically acceptable salts, hydrates solvates and esters thereof.

Preferred among the presently invented ketone reduction products described above are those in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 2-12 carbon atoms.

Particularly preferred among the presently invented ketone reduction products described above are the secondary alcohols wherein the 17 25 OH I -C-A-R substituent is attached in the 13 position.

These compounds can be made by conventional sodium 30 borohydride reduction of the carbonyl attached to A without epimerization or reducing the carboxyl in Ring A or the 3,5-double bonds. If the R substituent contains a carbonyl function, it can be selectively blocked and then regenerated after the borohydride reduction by conventional methods.

The borohydride reduction can be carried out in e.g. water or aqueous methanol, at a temperature of room temperature to 50 °C and WO 94/11386 PCT/US93/11241 the product then isolated and purified by conventional means. The compounds are also active as 5-alpha reductase inhibitors.

By the term "halogen-Vilsmeier reagent" as used herein is meant a halogenated disubstituted formamide reagent of the structure: 9 r \ / >N=C / \ R X® Y wherein R^ and RlO are independently selected from an alkyl, aryl or arylalkyl group; and X is Br or I; and y is a counter ion, which is prepared by a) reacting, preferably at reduced temperatures, a chloride 10 source such as oxalyl chloride or thionyl chloride, with a disubstituted formamide reagent, such as a dialkyl substitued formamide reagent preferably dimethylformamide, in an appropriate solvent, preferably methylene chloride, to form a chloro-Vilsmeier reagent, said chloro-Vilsmeier reagent being reacted in situ, preferably at reduced 15 temperatures, with a bromide source or an iodine source, preferably hydrogen bromide gas or b) reacting, preferably at reduced temperatures, a bromide source or an iodide source, preferably oxalyl bromide, with a disubstituted formamide reagent, such as a dialkyl substituted formamide reagent preferably dimethylformamide in an appropriate solvent, preferably methylene chloride.

By the term "reduced temperature" as used herein is meant below 25 25°C, preferably between -15 and 15°C, most preferably between 0 and 10°C.

By the term "cyanating reagent" as used herein and in the claims is meant a compound or reagents which are capable of reacting with a halogenated moiety to form a cyanated moiety under appropriate 30 conditions.

Preferably said cyanated moiety is prepared by reacting the corresponding halogenated moiety with a cyanating agent in an appropriate solvent, such as N,N-dimethyl-N,N-propylene urea (DMPU), N,N-dimethylformamide (DMF) or N-methyl-2-pyrrolidinone (NMP), 35 preferably DMF, at increased temperatures.

WO 94/11386 PCT/US93/11241 By the term "saponifying" and derivatives thereof as used herein and in the claims is meant a compound or reagent or a series of reagents which are capable of reacting with a nitrile to form a carboxylic acid substituted moiety under appropriate conditions. Preferably said 5 carboxylic acid substituted moiety is prepared by reacting the corresponding cyanated moiety with a hydroxide base, preferably aqueous sodium hydroxide, in an appropriate solvent, such as; ethylene glycol, isopropyl alcohol or ethanol, preferably ethanol, at increased temperatures with subsequent acidification.

By the term "increased temperatures" as used herein and in the claims is meant above 25°C, preferably at reflux temperatures.

Preferably cyanating reagents for use in the presently disclosed processes utilize cyanide complexes such as described in Richard C. Larock, Comphrehensive Organic Transformations: A Quid? tp 15 Functional Group Preparations. Pub: VCH Publishers, Inc. (1989) P. 861. An example of a cyanide complex as used herein is the in situ co-mixture of KCN, NiBr2(PPh3)2, Zn, PPI13. Other examples include: Co(CN)34; K4Ni2(CH)6, KCN; KCN, cat Pd(PPh3)4; Co(CN)35'; CuCN and NaCu(CN)2- As used herein the term "NaCu(CN)2" refers to the reagent 20 formed by co-mixing CuCN and NaCN in situ.

Preferred among the above cyanating complexes are CuCN and NaCu(CN)2.

Particularly preferred among the above cyanating complexes is NaCu(CN)2.

Preferably said NaCu(CN)2 complex is prepared by adding 1 molar equivalent of sodium cyanide to cuprous cyanide in situ.

By the term "solvent" or "appropriate solvent" as used herein and the in the claims is meant a solvent such as methylene chloride, ethylene 30 chloride, chloroform, ethylene glycol, carbon tetrachloride, tetrahydrofuran (THF), ethyl ether, toluene, ethyl acetate, hexane, dimethylsulfoxide (DMSO), N,N'-dimethyl-N,N'-propylene urea, N-methyl-2-pyrrolidinone, methanol, isopropylalcohol, dimethylformamide (DMF), water, pyridine, quinoline or ethanol.

WO 94/11386 PCT/US93/11241 Pharmaceutically acceptable salts, hydrates and solvates of Formula (I) and Formula (V) compoimds are formed, where appropriate, by methods well known to those of skill in the art.

In preparing the presently invented compounds of Formula (I), novel intermediates of the following Formula (HD are synthesized; 2 r an) in which R2 is 2-thiopyridylcarbonyl and R^ is fluorosulfonyloxy or cyano.

Also, prepared in synthesizing the presently invented Formula (I) compounds were novel intermediates of the Formula (IV): O ii .

C-A-R (IV) in which A is as defined in Formula (II) and R® is R as defined in Formula (II) or moieties which can be converted to those of R by known 15 reactions such as desired in Derek Barton and U.S. OUis, Comprehensive Organic Chemicstv: The Synthesis and Reactions of Organic Compounds. Pub: Pergamon Press (1979), and R^ is fluorosulfonyloxy, halogen, cyano, or -CHO.

Also prepared in synthesing the presently invented Formula I compoimds were novel intermediates of the structure CHO (VI) 32 Also prepared in synthesing the presently invented Formula I compounds were novel intermediates of the Formula (VII) a -A-R (VII) in which A and are as defined in Formula (TV).

A preferred process for preparing a compound of Formula (II) C-A-R O II H-OC^ ^ (II) in which A is a linear or branched, saturated or unsaturated 10 hydrocarbon containing from 1-12 carbon atoms; and R is as defined in Formula (II) above and pharmaceutically acceptable salts, hydrates, solvates and esters thereof comprises reacting a compound of the formula C-A-R (VHI) in which A and R® are as defined in Formula (IV) with fluorosulfonic anhydride and a base, preferably, 2,5-t-butyl-3-methyl-pyridine, in a solvent, preferably dichloromethane, to form a compound of the formula F°2S0' in which A and R® are as described above and subsequently reacting said compound in a metal-catalyzed coupling reaction in the presence of an approrpirate coupling reagent, preferably, carbon monoxide followed by an optional, if applicable, hydrolysis reaction and optionally, if applicable converting R® to R, to form a compound of Formula II, and thereafter optionally forming a pharmaceutically acceptable salt, hydrate or solvate thereof.

The above formula (VIII) compounds are prepared by first activating the 17-position carboxyic acid substituent of compounds of structure (X, as described herein, preferably with an acid chloride, such as thionylchloride or by forming a thiopyridylester by reaction with 2,2-dithiopyridyl, and then treating with a Grignard reagent as described herein.

A preferred process for preparing a compound of Formula II O II C-A-R rjC£5 in which A and R are a defined above and pharmaceutically acceptable salts, hydrates, solvates and esters thereof comprises reacting, at a reduced temperature, a compound of the formula COOH in the presence of a halogen-Vilsmeier reagent and a solvent then quenching with Grignard reagent to form a compound of the formula PCI7US93/11241 C-A-R Halogen- in which A and R® are as described in Formula (IV) and subsequently, in an appropriate solvent, reacting said compound with a cyanating reagent to form a compound of the formula ? .

C-A-R N = in which A and R® are as defined above and subsequently saponifying said compound and optionally, if applicable, converting R® to R, to form a compound of Formula II and thereafter optionally forming a pharmaceutically acceptable salt, hydrate or solvate.

A process for the preparation of a compound of the Formula C-A-R HOCC in whk h A and R are as defined in Formula (II); and pharmaceutically acceptable salts, hydrates, solvates and esters thereof which comprises either i) oxidation of a compound of the Formula (VII) ohc- v v (vn) in which A and are as defined in Formula (TV) or (ii) reacting a compound of the Formula (XI) 0 (XI) in which A and R® are as described above, in a metal-catalyzed coupling reaction in the presence of an appropriate coupling reagent, preferably, 10 carbon monoxide followed by an optional, if applicable, hydrolysis reaction or (iii) hydrolyzing a compound of the Formula (XII) CveakytO ° (XII) in which A and R® are as described above, and optionally, if applicable, converting R® to R and thereafter optionally forming a pharmaceutically acceptable salt, hydrate or solvate thereof.

Because the presently invented pharmaceutically active 20 compounds inhibit steroid 5-a-reductase activity, they have therapeutic WO 94/11386 PCT/US93/11241 utility in treating diseases and conditions wherein decreases in DHT activity produces the desired therapeutic effect. Such diseases and conditions include acne vulgaris, seborrhea, female hirsutism, male pattern baldness, prostate diseases such as benign prostatic 5 hypertrophy, and prostatic adenocarcinoma.

In determining potency in inhibiting the human 5a-reductase enzyme, the following procedure was employed: Preparation of membrane particulates used as source for recombinant 10 steroid 5a-reductase isozyme 1.

Chinese hamster ovary (CHO) cells containing expressed, recombinant human steroid 5a-reductase isoenzyme 1 (Andersson, S., Bennan, D.M., Jenkins, E.P., and Russell, D.W. (1991) Nature 354 159-161) were homogenized in 20 xnM potassium phosphate, pH 6.5, 15 buffer containing 0.33 M sucrose, 1 mM dithiothreitol, and 50 jiM NADPH (buffer A) using a Dounce glass-to-glass hand homogenizer (Kontes Glass Co., Vineland, N.J.). Membrane particulates were isolated by centrifugation (100,000 x g at 4°C for 60 minutes) and resuspended in 20 mM potassium phosphate, pH 6.5, containing 20% 20 glycerol, 1 mM dithiothreitol, and 50 jiM NADPH (buffer B). The suspended particulate solution was stored at -80°C.

Preparation of prostatic membrane particulates used as source for steroid 5rc-reductase isozyme^.

Frozen human prostates were thawed and minced into small pieces ( Brinkmann Polytron (Sybron Corp., Westbuiy, New York). The solution was sonicated for 3 to 5 minutes with a Sonifier (Branson Sonic Power Co.) followed by hand homogenization in a Dounce hand homogenizer. Prostatic particles were obtained by differential 30 centrifugation at 600 or 1000 x g for 20 minutes and 140,000 x g for 60 minutes at 4°C. The pellet obtained from the 140,000 x g centrifugation was washed with 5 to 10 tissue volumes of the buffer described above and centrifuged at 140,000 x g. The resulting pellet was suspended in buffer B and the particulate suspension was stored at -80°C.

Prpnarfltinn of mpmhrane particulates used as source for recombinant steroid 5-a-reductase isozyme 2.

Chinese hamster ovary (CHO) cells containing expressed, recombinant human steroid 5-a-reductase isozyme 2 were homogenized 5 in 20 mM potassium phosphate, pH 6.5, buffer containing 0.33 M sucrose, ImM dithiothreitol, and 50 pM NADPH (buffer A) using a Douce hand homogenizer. Membrane particulates containing the recombinant human enzyme were isolated by centrifugation (100,000 x g at 4°C for 60 minutes) and resuspended in 20 mM potassium 10 phosphate, pH 6.5 containing 20% glycerol, ImM dithiothreitol, and 50 pM NADPH (buffer B). The suspended particulate solution was stored at -80°C until used.

Assay for enzvmes activities and inhibitors potency. 15 A constant amount of [^C]testosterone (50 to 55 mCi/mmol) in ethanol and varying amounts of potential inhibitor in ethanol were deposited in test tubes and concentrated to dryness in vacuo. To each tube was added buffer, 10 pL (recombinant isoenzyme 1 or isoenzyme 2) or 20 pL (isoenzyme 2 from human prostate tissue) of 10 mM NADPH 20 and an aliquot of a steroid 5a-reductase preparation to a final volume of 0.5 mL. Assays for human steroid 5a-reductase isoenzyme 1 were conducted with a sample of the recombinant protein expressed in CHO cells in 50 mM phosphate buffer, pH 7.5 while assays of isoenzyme 2 were conducted with a suspension of human prostatic particulates 25 and/or recombinant protein expressed in CHO cells in 50 mM citrate buffer at pH 5.0.

After incubating the solution at 37°C for 20 or 30 minutes the reaction was quenched by the addition of 4 mL ethyl acetate and 0.25 pmol each of testosterone, 5a-dihydrotestosterone, androstanediol, and 30 androstanedione as carriers. The organic layer was removed to a second test tube and evaporated to dryness in a Speed Vac. The residue was dissolved in 40 pL chloroform, spotted on an individual lane of a 20 x 20 cm prechannelled silica gel TLC plate (Si 250F-PA, Baker Chemical) and developed twice with acetone:chloroform (1:9). The radiochemical 35 content in the bands of the substrate and the products was determined with a BIOSCAN Imaging Scanner (Bioscan Inc., Washington, D.C.). The percent of recovered radiolabel converted to product was calculated, from which enzyme activity was determined. All incubations were conducted such that no more than 20% of the substrate (testosterone) was consumed.

The experimentally obtained data was computer fit to a linear 5 function by plotting the reciprocal of the enzyme activity (1/velocity) against the variable inhibitor concentration; apparent inhibition constants (Kj app) were determined by the Dixon analysis (Dixon, M. (1953).

The value for the* inhibition constant (Ki) was calculated from 10 known procedures (Lt y, M. (1989), Biochemistry. 29:2815-2824).

The pharmaceutically active compounds within the scope of this invention are useful in inhibiting steroid 5-a-reductase in a mammal, including humans, in need thereof.

Compounds within the scope of this invention have been tested and have shown an activity of from 85 Ki(nM) to 2 Ki(nM) against isozyme 1 and an activity of from 7 Ki(nM) to 0.2 Ki(nM) against isozyme 2. Particularly preferred among the compounds of the invention and the compounds used in the invented pharmaceutical compositions and 20 invented methods are 17B-(phenylpropylcarbonyl)-androsta-3,5-diene-3-carboxylic acid, 17B-(benzylcarbonyl)-androsta-3,5-diene-3-carboxylic acid, 17fl-(cyclohexylethylcarbonyl)-androsta-3,5-diene-3-carboxylic acid, 17B-(5,5,5-trifluoro-l-oxopentyl)-androsta-3,5-diene-3-carboxylic acid, 17B-(2-cydohexyl-l-oxoethyl)-androsta-3,5-diene-3-carboxylic add, 17B-25 (3-methyl-3-phenyl-l-oxobutyl)-androsta-3,5-diene-3-carboxylic add, 17G-(phenethylcarbonyl)-androst-3,5-diene-3-carboxylic add, 17B-(3-(4-methoxy phenyl)-l-oxopropyl)-androsta-3,5-diene-3-carboxylic add, 17B-(3-(4-hydroxy phenyl)-l-oxopropyl)-androsta-3,5-diene-3-carboxylic add, 17B-(4-fluorophenethylcarbonyl)-androsta-3,5-diene-3-carboyxlic add 30 and 17B-(2,6-difluorobenzylcarbonyl)-androsta-3,5-diene-3-carboxylic add.

The pharmaceutically active compounds of the present invention are incorporated into convenient dosage forms such as capsules, tablets, or injectable preparations. Solid or liquid pharmaceutical carriers are 35 employed. Solid carriers include, starch, lactose, caldum sulfate dihydrate, terra alba, sucrose, talc, gelatin, agar, pectin, acada, magnesium stearate, and stearic add. Liquid carriers indude syrup, PCI7US93/I124I peanut oil, olive oil, saline, and water. Similarly, the carrier or diluent may include any prolonged release material, such as glyceryl monostearate or glyceryl distearate, alone or with a wax. The amount of solid carrier varies widely but, preferably, will be from about 25 mg to 5 about 1 g per dosage unit. When a liquid carrier is used, the preparation will be in the form of a syrup, elixir, emulsion, soft gelatin capsule, sterile injectable liquid such as an ampoule, or an aqueous or nonaqueous liquid suspension.

The pharmaceutical preparations are made following conventional 10 techniques of a pharmaceutical chemist involving mixing, granulating, and compressing, when necessary, for tablet forms, or mixing, filling and dissolving the ingreidents, as appropriate, to give the desired oral or parenteral products.

Doses of the presently invented pharmaceutically active compounds in a pharmaceutical dosage unit as described above will be an efficacious, nontoxic quantity preferably selected from the range of 0.01 -1000 mg/kg of active compound, preferably 0.1 -100 mg/kg. When treating a human patient in need of steroid 5-a-reductase inhibition, the 20 selected dose is administered preferably from 1-6 times daily, orally or parenterally. Preferred forms of parenteral administration include topically, rectally, transdermally, by injection and continuously by infusion. Oral dosage units for human administration preferably contain from 0.1 to 500 mg of active compound. Oral administration, 25 which uses lower dosages is preferred. Parenteral administration, at high dosages, however, also can be used when safe and convenient for the patient.

The method of this invention of inhibiting steroid 5-a-reductase activity in mammals, including humans, comprises administering to a 30 subject in need of such inhibition an effective steroid 5-a-reductase inhibiting amount of a pharmaceutically active compound of the present invention.

The invention also provides for the use of a compound of Formula (I) or a compound of Formula (V) in the manufacture of a medicament 35 for use in the inhibition of steroid 5-a-reductase.

The invention also provides for a pharmaceutical composition for use in the treatment of benign prostate hypertrophy which comprises a compound of Formula I or a compound of Formula (V) and a pharmaceutically acceptable carrier.

The invention also provides for a pharmaceutical composition for use in the treatment of prostatic adenocarcinoma which comprises a 5 compound of Formula I or a compound of Formula (V) and a pharmaceutically acceptable carrier.

The invention also provides for a process for preparing a pharmaceutical composition containing a pharmaceutically acceptable carrier or diluent and a compound of Formula I or a compound of 10 Formula (V) which comprises bringing the compound of Formula I or the compound of Formula (V) into association with the pharmaceutically acceptable carrier or diluent.

No unacceptable topological effects are expected when compounds of the invention are administered in accordance with the 15 present invention.

In addition, the pharmaceutically active compounds of the present invention can be co-administered with further active ingredients, such as other compoimds known to treat the disease states of acne vulgaris, seborrhea, female hirsutism, male pattern baldness, benign prostate 20 hypertrophy or prostatic adenocarcinoma or compounds known to have utility when used in combination with 5-a-reductase inhibitors. Particularly preferred is the co-administration of a 5-a-reductase inhibitor, as disclosed herein, and minoxidil for use in the treatment of male pattern baldness. Particularly preferred is the co-administration 25 of a 5a-reductase inhibitor, as disclosed herein, and a a-receptor antagonist for use in the treatment of benign prostatic hypertrophy. Preferred is the co-administration of a 5-a-reductase inhibitor, as disclosed herein, and an aromatase inhibitor for use in the treatment of benign prostatic hypertrophy. Preferred is the co-administration of a 5-30 a-reductase inhibitor, as disclosed herein, a a -receptor antagonist and an aromatase inhibitor for use in the treatment of benign prostatic hypertrophy.

Without further elaboration, it is believed that one skilled in the art can, using the preceding description, utilize the present invention to 35 its fullest extent. The following Examples are, therefore, to be construed as merely illustrative and not a limitation of the scope of the present invention in any way.

WO 94/1138o PCI7US93/11241 EXAMPLE 1-corresponding to Scheme I 17B-(PhenethvlcarhoTiv])-androsta-3-5-diene-3-carhoxvlic acid (i). 17 P-(Phenethylcarbonyl)-androsta-3-bromo-3,5-diene A flask under nitrogen atmosphere is charged with 100 mL of methylene chloride and 6.12 mL (2.5 molar equivalents) of dimethylformamide. The soludon is cooled to 0-5°C, and treated with 6.9 mL (2.5 molar equivalents) of oxalyl chloride while maintaining the temperature between 0-10°C. A white precipitate fanned. After stirring for one hour, 50.1 grams (19.6 molar equivalents) of hydrogen bromide gas is 10 bubbled through the solution while maintaining the temperature between 0-10°C. The suspension becomes a clear colorless solution. The solution is degassed by reducing the solution volume by about one-half by vacuum distillation and restoring to its original volume with methylene chloride. This concentration/refill procedure is repeated. Androst-4-en-3-one-17b-carboxylic acid. 10.0 grams (1 molar equivalent), 15 is added to the resulting white suspension and the mixture is warmed to room temperature and stirred for 2 hours. The reaction mixture is quenched into a vessel containing 100 mL of methylene chloride and 1 molar equivalent of phenethylmagnesium bromide while maintaining the temperature between 0-10°C. The mixture is stixred for 30 minutes. About 100 mL of water is added and the 20 biphase mixture is filtered through a pad of Celite. The organic phase is separated and reduced to about half its volume by vacuum distillation. The solution is restored to its original volume with acetone. This concentration/fill procedure is repeated twice more. The resulting acetone solution (about 300 mL) is warmed to about 50°C and was treated with about 100 mL of water to precipitate the product. The suspension is 25 cooled, and the product, 17B-(phenethylcarbonyl)-androsta-3-bromo-3,5-dienc, is isolated by filtration and dried. (ii) 17p-(Phenethylcarbonyl)-androsta-3-cyano-3,5-diene A stirred mixture of 17B-(phenethylcarbonyl>androsta-3-bromo-3,5-diene 30 (50 grams, 1 molar equivalent), cuprous cyanide (11.0 grams, 1 molar equivalents), and dimethylformamide (200 mL) is heated to reflux for 3.5 hours. The reaction is cooled to 90-100°C and quenched with stirring into a solution of 100 mL of conc. aqueous ammonia and 200 mL of water. The reaction flask is rinsed out with 25 mL of 35 dimethylformamide, which is also added to the quench solution. The resulting suspension is extracted twice with 200 mL portions of methylene chloride, and the organic extracts is filtered through a pad of celite. The organic phase is washed with three 200 ttiT. portions of 50/50 v/v conc. aqueous ammonia/water, followed by two 200 mL portions of water. The organic phase is concentrated under vacuum to 150 mL and 250 mL of ethanol is added. The solution is again concentrated under 5 vacuum to 150 mL, and 250 mL of ethanol is added. The solution is concentrated under vacuum to 300 mL, and 30 mL of water is added to induce crystallization. The resulting suspension is chilled for 2 hours at 0-5°C. The solid product is collected by filtration and is dried at 65°C under vacuum to afford 17C-(phenethylcarbonyl)-androsta-3-cyano-3,5-10 diene. (iii) 17B-(phenethylcarbonyl)-androsta-3,5-diene-3-carboxylic acid A mixture of 17B-(phenethylcarbonyl)-androsta-3-cyano-3,5-diene (20.0 grams, 1 molar equivalent), 50% aqueous sodium hydroxide (80 mL, 30 molar equivalents), and ethanol (200 mL) is heated to reflux for 15 18 hours. The reaction suspension is cooled to 50°C and is added to a stirred mixture of 6N hydrochloric arid (30': mL) and methylene chloride (200 mL). The final pH of the aqueous phase is 1.5-2.0. The organic phase is separated and the aqueous phase is reextracted with 250 mL of methylene chloride. The combined organic phases are stirred with 2 20 grams of decolorizing charcoal for one hour and are filtered through a pad of celite. The organic phase was concentrated under vacuum to 120 mL and 200 mL of ethyl acetate is added. The suspension is again concentrated under vacuum to 120 mL and 200 mL of ehtyl acetate is added. The resulting suspension is concentrated under vacuum to a 25 final volume of 120 mL and is heated at reflux for 2 hours. The suspension is chilled at 0~5°C for two hours and filtered. The solid product is dried under vacuum at 65°C to afford 17B-(phenethylcarbonyl)-androsta-3,5-diene-3-carboxylic arid.

EXAMPLE 2-corresnonding to Scheme TT 17B-(PhenethvlcarbonvlVandrosta-3.5-diene-3-carhoxvli r AriH (i). 3-(trifluoromethanesulfonyloxy)-androst-3,5-diene-17B-carboxylic acid A solution of androst-4-en-3-one-17B-carboxylic acid (8.0 g; 25 mmol), 2,6-di-t-butyl-4-methyl pyridine (16.6 g; 62 mmol) and trifluoroxnethane 35 sulfonic anhydride (11 ml; 66 mmol) in methylene chloride was stirred at 5°C for 20 hours. The organic solvent was evaporated and the residue is dissolved in tetrahydrofuran water (99.5:0.5) with 4-dimethylaminopyridine (9.0 g) which upon acidification with hydrochloric acid followed by conventional workup yield 13 grams of the title compound (92% yield). MP 182°C. (ii). S-(2-pyridyl)-3-(trifluoromethanesulfonyloxy)-androsta-3,5-diene-17B-thiocarboxylate A solution of S-Ctrifluoromethanesulfonyloxyi-androsta-S.S-diene-lTB-carboxylic acid (6.2 g; 14.9 mmol), triphenylphosphine (9.92 g; 38 mmol) and, 2,2'-dipyridyl disulfide (8.68 g; 39.5 mmol) in CH2CL2 (50 ml) was 10 stirred under nitrogen for 20 hours. The reaction mixture was concentrated and the residue was passed directly through silica gel and appropriate fractions evaporated to yield 4.0 g of the title compound (50% yield). MP 120-122°C. (iii). 17C-(Phenethylcarbonyl)-androsta-3,5-diene-3-trifluoromethane sulfonate To a solution of S-(2-pyridyl)-3-(trifluoromethanesulfonyloxy)-androsta-3,5-diene-17£-thiocarboxylate (0.3 g; 0.56 mmol) in tetrahydrofuran (20 ml) at about -50°C was added phenethylmagnesium 20 bromide (1.6 mmol). The reaction mixture was warmed to about -10°C, and diluted with a saturated aqueous ammonium chloride solution. Conventional workup with subsequent isolation by column chromatography yielded 166 mg of the title compound (60% yield). MP 98-99°C. (iv) 17B-(Phcnethylcarbonyl)-androsta-3,5-diene-3-carboxylic acid A mixture of 17B-(phenethylcarbonyl)-androsta-3,5-diene-3-trifluoromethane sulfonate (0.125 g; 0.23 mmol), potassium acetate (0.130 g; 1.32 mmol) and bis(triphenylphosphine) palladium (II) diacetate (0.015 g; 0.02 mmol) in DMF (3ml) was purged with carbon monoxide for 2 minutes 30 and stirred under a CO ballon at 60°C for 2 hours. Reaction was diluted with water, acidified with 0.5 NHC1 and extracted with ethylacetate and ethyl acetate extracts washed with water, dried (MgS04) and evaporated under vacuum. The residue was chromatographed on a silica gel column eluting with hexane: ethylacetate: acetic acid 70:30:1. The solid obtained 35 was recrystalized from acetonitrile to give 17 mg (17%) of white solid. MP 218-220°C.

EXAMPLE 3 - corresponding to Scheme II 17B-(4-Fluorophenethv]carhonvlVandrosta-3.5-diene-3-carboxvlic Acid The title compound is prepared according to Example 2 (i-iv) by substituting 4-fluorophenethylmagnesiuxn bromide for 5 phenethylmagnesium bromide in step iii.

EXAMPLE 4 - corresponding to Scheme II 17B-(Phenvlpropylcarbonv1landrosta-3.5-diene-3-carbo?cv]ic Acid The title compound was prepared according to Example 2 (i-iv) by 10 substituting phenylpropylmagnesium bromide for phenethylmagnesium bromide in step iii. MP 208-210°C.

EXAMPLE 5 - corresponding to Scheme II 17B-raeT^lcarhnnvlVaTidTOBta-3.5-diene-3-carbcixvlic Arid 15 The title compound was prepared according to Example 2 (i-iv) by substituting benzylmagnesium chloride for phenethylmagnesium bromide in step iii. MP 258°C.

EXAMPLE 6 - corresponding to Scheme II 20 17B-(Cvclohexvlethvlcarbon vl Vandrosta.3 5-digne-S-rarhnrvKc Anr.

The title compound was prepared according to Example 2 (i-iv) by substituting cyclohexylethylmagnesium bromide for phenethylmagnesium bromide in step iii. MP247°C.

EXAMPLE 7-corresPonding to Scheme IT! 17B-(2.6-difluorobenzvlcarbonvlVandrosta-3S-<iiene-3-carfaoxvlic acid The title compound is prepared according to Example 10 (i-v) by substituting 2,6-difluorobenzylmagneshun bromide for 4,4,4-trifluorobutylmagnesium bromide in step iii.

EXAMPLE 8-correspondinp to Scheme IT 17B-(phenethvlcarbonvlVandrosta-3.5-diene-3-carboxvlic Acid (i). 3-(fluorosulfonyloxy)-androsta-3,5-diene-17fl-carboxylic acid A solution of androsta-4-en-3-one-17B-carboxylic acid, 2,6-di-t-butyl-35 4-methyl pyridine and fluorosulfonic anhydride in methylene chloride is stirred at 5°C for 20 hours. The reaction mixture is washed with aqueous hydrochloric acid and water. The organic phase is concentrated and the resulting residue is purified by column chromatography to yield the title compound. (ii). S-(2-pyridyl)-3-(fluorosudfonyloxy)-androsta-3,5-diene-17C-5 thiocarboxylate A solution of 3-(fluorosulfonyloxy)-androsta-3,5-diene-17B-carboxylic acid, triphenylphosphine and, 2,2'-dipyridyl disulfide in toluene is stirred under nitrogen for 20 hours. The reaction mixture is concentrated and the residue is passed directly through silica gel and appropriate fractions 10 evaporated to yield title comopund. (iii). 17B-(Phenethylcarbonyl)-androsta-3,5-diene-3-fluorosulfonate To a solution of S-(2-pyridyl>3-(fluorosulfonyloxy)-androsta-3,5-diene-17B-thiocarboxylate in tetrahydrofuran at about -50°C is added 15 phenethylmagnesium bromide. The reaction mixture is warmed to about -10 °C and diluted with a saturated aqueous ammonium chloride solution. Conventional workup with subsequent isolation by column chromatography yields title compound. (iv). Methyl 17B-(phenethylcarbonyl)-androsta-3,5-diene-3-carboxylate A solution of 17£-(phenethylcarbonyl)-androsta-3,5-diene-3-fluorosulfonate, triphenyl phosphine, palladium 11 acetate, triethylamine, methanol and dimethyl formamide is stirred vigorously under a carbon monoxide atmosphere for 20 hours. Conventional workup with subsequent 25 isolation by column chromatography yields title compound. (v). 17B-(phenethylcarbonyl)-androsta-3,5-diene-3-carboxylic acid A mixture of methyl 17B-(phenethylcarbonyl)-androsta-3,5-diene-3-30 carboyxlate, K2CO3, water and methanol is heated at reflux for about 5 hours. Acidification followed by conventional workup yields title compound.

EXAMPLE 9-correspondiiig to Scheme IT 17B-(Phenethvlcarbonvl)-androsta-3.5-diene-3-carboxvlic Acid 35 (i). 3-(Fluorosulfonyloxy)-androsta-3,5-diene-17B-carboxylic acid. The title compound is prepared according to Example 8(i). (ii). 3-Cyano-androsta-3,5-diene-17B-carboxylic acid.

A solution of 3-(fluorosulfonyloxy)-androsta-3,5-diene-17B-carboxylic acid in dimethylformaide is treated with an excess of cuprous cyanide at reflux. The reaction solution is quenched into aqueous 5 ammonia and is filtered. The filtered solids are dissolved in methylene chloride/aqueous hydrochloric acid. Conventional workup and isolation by column chromatography yields the title compound. (iii). S-(2-pyridyl)-3-cyano-androsta-3,5-diene-17fl-thiocarboxylate. 10 The title compound is prepared according to Example 2(ii) by substituting 3-cyano-androsta-3,5-diene-17B-carboxylic acid, prepared as in Example 9(ii), for 3-(trifluoromethanesulfonyloxy)-androsta-3,5-diene-17B-carboxylic acid. (iv). 3-cyano-17B-(Phenethylcarbonyl)-androsta-3,5-diene.

The title compound is prepared according to Example 2(iii) by substituting S-(2-pyridyl)-3-cyano-androsta-3,5-diene-17B-thiocarboxylate, as prepared in Example 9(iii), for S-(2-pyridyl)-3-(trifluoromethanesulfonyloxy )-androsta-3,5-diene- 17B-thiocarboxylate. (v) 17B-(Phenthylcarbonyl)-androsta-3,5-diene-3-carboxylic acid.

A mixture of 3-cyano-17B-(phenthylcarbonyl)-androsta-3,5-diene excess sodium hydrochloride and ethanol is heated at reflux. The resulting mixture is quenched with aqueous hydrochloric acid, and is 25 extracted with methylene chloride. Conventional workup and isolation by column chromatography yields the title compound.

Example 10 - corresponding to Scheme ITT 17B-(5.5.5-trifluoro-l-oxopentvl)-androsta-3.5-diene-3-carhoxvlic acid i) methyl 17p-cyano-androsta-3,5-diene-3-carboxylate Phosophorus oxychloride (40ml, 429 mmol) was added to a solution of (17P)- 17-N-t-butyl carboxamidyl androsta-3,5-diene-3-carboxylic acid (15.5 g, 39 mmol) in benzene (500 ml) and was heated to 35 reflux. After 12 h the reaction was treated with MeOH (10 ml), then aqueous NaHCC>3, extracted with CH2CI2. dried (MgS04), filtered, concentrated, chromatographed (silica gel, 20% EtOAc/hexanes), and recrystallized (EtOAc/hexanes) to yield the title compound as a yellow solid. ii) 17P-carboxaldehydo- androsta-3,5-diene-3-methanol Diisobutyl aluminum hydride (1.0 M in toluene, 60ml, 60 mmol) was added to a solution of methyl (17P)-17-cyano androsta-3,5-diene-3-carboxylate (lOg, 29 mmol) in toluene (200 ml) at RT. After 3.5 h, the reaction was quenched with aqueous H2SO4 (700 ml) and was stirred for 2 h. The organic layer was extracted with brine, H2O, then was dried 10 (MgS04), filtered, concentrated, and chromatographed (20% EtOAc/hexanes) to yield the title compound as a yellow solid. iii) 17fS-(5,5,5-trifluoro-l-hydroxypentyl)-androsta-3,5-diene-3-methanol 4,4,4-trifluorobutyl magnesium bromide (0.25 M in THF, 4.0 ml, 15 1.0 mmol) was added to a solution of (17P)-17-carboxaldehydo- androsta-3,5-diene-3-methsinol (50 mg, 0.16 mmol) in THF at 0 degrees C. After 0.5 h the reaction was quenched with aqueous ammonium chloride, the aqueous layer was extracted with EtOAc, the combined organic extracts were dried (MgS04), filtered, concentrated, and chromatographed (silica 20 gel, 20% EtOAc) to yield the title compound. iv) 17 (M5,5,5-trifluoro- l-oxopentyl)-androsta-3,5-diene-3-carboxaldehyde Tetrapropyl Ammonium perruthenate (10 mg, 0.028 mmol) was 25 added to a solution of (17p)-17-(5,5,5-trifluoro-l-hydroxypentyl)-androsta-3,5-diene-3-methanol (65 mg, 0.15 mmol) and 4-methylmorpholine N-oxide (80 mg, 0.68 mmol) in CH2CI2 (2.0 ml) at RT. After lh the reaction was flash chromatographed (silica gel, 20% EtOAc/ 80% hexanes) to yield the title compound. v) 17P-(5,5,5-trifluoro-l-oxopentyl)-androsta-3,5-diene-3-carboxylic acid Sodium chlorite (53 mg, 0.6 mmol) was added to a mixture of 17p-(5,5,5-trifluoro-l-oxopentyl)-£Lndrosta-3,5-diene-3-carboxaldehyde (50 mg, 0.12 mmol), sodium phosphate, monobasic monohydrate (140 mg, 35 1.18 mmol) in 2-methyl-2-butene in THF (2.0M, 3.0 ml), H2O (0.5 ml), and t-butanol (0.5 ml) at RT. After 6h acetic acid (3.0 ml) was added, then the aqueous layer was extracted with EtOAc (10 ml), the combined organic extracts were dried (MgSO.4), filtered, concentrated, and flash chromatographed (silica gel, 1% AcOH/ 19% EtOAc/ 80% hexanes) to yield the title compound as a white waxy solid. ESMS m/e 439 [M+H]+ 17B-(2-cvclohexvl-l-oxoethvl)-androsta-3.5-dienp-3-carhoYvlic arid i) 17(M2-cyclohexyl-l-oxoethyl)-androsta-3,5-diene-3-carboxylic acid Following the procedure of Example 10 (i)-(v), except substituting 10 cyclohexyl methyl magnesium bromide for 4,4,4-trifluorobutyl magnesium bromide in step iii, the title compound was prepared as a white solid MP 257°C Dec. MS (DCI/NH3) m/e 425 [M+H]+.

Example 12 - corresponding to Scheme in 15 17B-(3-methvl-3-phenvM-oxobutvl)-androsta-3.5-diene-3-carboxvlic acid i) 17p-(3-methyl-3-phenyl-l-oxobutyl)-andrceta-3,5-diene-3-carboxylic acid Following the procedure of Example 10 (i)-(v), except substituting 2-methyl, 2-phenyl propyl magnesium bromide for 4,4,4-trifluorobutyl 20 magnesium bromide in step iii, the title compound was prepared as a white solid MP 192°C Dec. MS (DCI/NH3) m/e 461 [M+H]+- EXAMPLE 13-corrffSPondingto Schema ITT. 17fi-(3-( 4-methoxv phenvlV1-nxmiropvl)-androsta-3.5-diene-3-carboxvlic i) 173-(3-(4-methoxy phenyl)-l-oxopropyl)-androsta-3,5-diene-3-carboxylic arid Following the procedure of Example 10(iMv), except subtituting 2-(4-methoxy phenyl) ethyl magnesium chloride for 4,4,4-trifluorobutyl 30 magnesium bromide in step iii, the title compound was prepared as a white solid MS(DCI/NH3>m/e 463[M+H]+.

EXAMPLE 14-functional group interchange of Example 13 17B-(3-(4-hvdroxv phenvl)-l-oxoproPvl)-androsta-3.5-diene-3-carboxvlic 35 acid Boron tribromide (0.4 ml, 0.4 mr ji, 1.0 M in CH2CI2) was added dropwise to a solution of 17B-(3-(4-methoxy phenyl)-1-oxopropyl)- Example 11 - corresponding to Scheme in arid WO 94/11386 PCT/US93/11241 • androsta-3,5-diene-3-carboxylic acid (60 mg, 0.129 mmol) in CH2CI2 (2.0 ml) at 0°C and was stirred for 0.5 hours, then was warmed to room temperature and was stirred an additional 2.5 hours. The reaction was quenched with 0.5 N HCL (5.0 ml), then was extracted with CH2CI2 (2 X 5 10 ml). The combined organic extracts were dried (MgS04), filtered, concentrated in vacuo, and chromatographed (silica gel, 1% AcOH/ 19% EtOAc/ 80% hexanes) to yield the title compound as a yellow solid MS (DCI/NH3) m/e 449 [M+H3+.

Example 15-corresponriing to General Method A. 17g-(t>henet.hv1paThnnvlVaTidrosta-3.5-diene-3-carboxvlic Acid Into a 250 ml 3-neck round bottom ilask is placed 17B-(phenethylcarbonyl)-androsta-3,5-diene-3-carboxylic acid and an excess of sodium hydroxide. To the flask is added dimethyl sulfoxide as a 15 solvent. The mixture is heated to reflux for 3 hours. Standard workup followed by isolation by preparative HPLC yields title compound.

Example if? 17B-r3-(4-fluorophenvlVl-oxoproTiv11-3.5-andmstadiene-3-carboxvlicacid 20 (i) S-(2-pyridyl)-androst-4-ene-3-one-17B-thiocarboxylate A mixture of 3-oxo-4-androstene-17B-carboxylic acid (0.95 g, 3 mmol), triphenylphosphine (1.6 g, 6 mmol), 2,2'-dipyridyl disulfide (1.32 g, 6 mmol) and toluene (250 ml) was stirred under argon at room temperature overnight. The resulting homogeneous solution was 25 concentrated in vacuo, and chromatographed (silica gel, 30% EtOAc in hexanes) to give 0.87 g (71%) of white solid. (ii) 17B-[3-(4-fluorophenyl)-l-oxopropyl]-androst-4-ene-3-one p-fluorophenylethylmagnesium bromide (5 mmol in 10 ml THF) was 30 added slowly to a solution of S-(2-pyridyl)-l-androst-4-ene-3-one-17B-thiocarboxylate (1.2 g. 3 mmol) in THF (30 ml) at -78°C. After 30 minutes the mixture was quenched with saturated NH4CI and extracted with EtOAc. The organic extract was washed with brine, dried (MgS04), filtered, concentrated in vacuo, and chromatographed (silica gel, 15% 35 EtOAc in hexanes 20% EtOAc in hexanes) to give an oil, 0.78 (62%). (iii) Trifluoromethyl-17B-[3-(4-fluorophenyl)- 1-oxopropyl ]-androsta-3,5-diene-3-sulfonate To a solution of 17B-[3-(4-fluorophenyl)-l-oxopropyl]-androst-4-ene-3-one (0.77 g, 1.8 mmol) and 2,6-di-tert-butyl-4-methylpyridine (0.51 5 g, 2.5 mmol) in CH2CI2 (20 ml) was slowly added trifluoromethanesulfonic anhydride (0.75 g, 2.7 mmol). After stirring for 2 hours at room temperature, the reaction mixture was washed with dilute HC1, water, dilute NaHC03, brine, dried (MgS04), filtered, concentrated in vacuo, and chromatographed (silica gel, hexanes 5% -> 10 EtOAc in hexanes) to give 0.44 g of white solid (44% yield). (iv) 17B-[3-(4-fluorophenyl)-l-oxopropyl]-3,5-androstadiene-3-carboxylic acid A mixture of trifluoromethyl- 17B-[3-(4-fluorophenyl)-l-oxopropyl]-15 androsta-3,5-diene-3-sulfonate (0.28 g, 0.5 mmol), palladium (II) acetate (5.6 mg, 0.025 mmol), triphenylphosphine (13 mg, 0.05 mmol), potassium acetate (0.19 g, 2 mmol) and DMF (6 ml) was heated at 60°C under an atmosphere of CO for 2.5 hours. The cooled mixture was diluted with ice water, acidified with dilute HC1 and extracted with CH2CI2. The 20 organic extract was washed with water, brine, dried (MgS04), filtered, concentrated in vacuo, and chromatographed (silica gel, 1% AcOH/19% EtOAc/80% hexanes) to yield the title compound 0.12 g (53%). Recrystallized from methanol-acetone. mp 220-220°C analysis for C29H35FO3 0.25 H2O (455.1) Cal'd Found C 76.54 76.61 H 7.86 7.88 MS (DCI/NH3) m/e 451 [M+H]+ EXAMPLE 17 17B-ri(R)-hvdroxv-3-phenvlpropvl1-androata-3.5-diene-3-carhnxvliR arid and t7B-ri(SVhvdroxv-3-phenvlproT)vl]-androsta-3.5-diene-3-carboxvlic 30 acid (i) A solution of 17B-(phenethylcarbonyl)-androsta-3,5-diene-3-carboyxlic acid (50 mg in 10 ml of MeOH and 1 ml of H2O) prepared according to Example 2(i-iv) is treated with 2 eq of LiBH4. The mixture is warmed to 40°C and stirred overnight. EtOAc is added and the WO 94/11386 PCT/US93/11241 mixture is filtered, dried and concentrated. Chromatography (silica gel, eluting 30% EtOAc in hexane with 0.5% HOAc) provides the title compounds of undetermined C-20 stereochemistry. (ii) Pure (R) and (S) forms are obtained by separation techniques readily available and known to those of skill in the art.

Example 18 An oral dosage form for administering Formula I coxnounds is 10 produced by screening, mixing, and filling into hard gelatin capsules the ingredients in the proportions shown in Table 1, below.

Table I Ingredients Amounts 17B-(phenethylcarbonyl)- 50 mg androsta-3,5-diene-3-carboxylic acid magnesium stearate 5 mg lactose 75 mg EXAMPLF, 19 The sucrose, calcium sulfate dihydrate and Formula (I) compound shown in Table II below, are mixed and granulated in the proportions shown with a 10% gelatin solution. The wet granules are screened, dried, mixed with the starch, talc and stearic acid, screened and 20 compressed into a tablet.

Table n Ingredients Amounts 17B-(phenethylcarbonyl)- 100 mg androsta-3,5-diene-3-carboxylic acid calcium sulfate dihydrate 150 mg sucrose 20 mg starch 10 mg talc 5 mg stearic acid 3 mg Example 20 17B-(phenethylcarbonyl)-androsta-3,5-diene-3-carbo3cylic acid, 75 5 mg, is dispursed in 25 ml of normal saline to prepare an injectable preparation.

While the preferred embodiments of the invention are illustrated by the above, it is to be understood that the invention is not limited to 10 the precise instructions herein disclosed and that the right to all modifications comming within the scope of the following claims is reserved. 8723

Claims (46)

WHAT WE CLAIM IS:

1. A compound represented by the formula: Z ? H-O-C^ (I) 5 wherein Z is a or fi o II -C-A-R in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-12 carbon atoms; and R is substituted alkyl, cycloalkyl or aryl, where 10 a) substituted alkyl is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-12 carbon atoms substituted with one or more substituents selected from the group consisting of: aryloxy, alkoxy, acyloxy, aniino, N-acylamino, nitro, cyano, oxo, halogen,-C(0)0R6 and-S(0)nR*>, 15 where R6 is hydrogen or alkyl, n is 0-2 and R^ is hydrogen, cycloalkyl, Cg-C^aryl. substituted cycloalkyl, substituted C6-Ci2aryl, alkyl or alkyl substituted with one or more 20 substituents selected from the group consisting of: alkoxy, acyloxy, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, aryloxy, -C(0)0R6, -S(0)nR^, nitro, cyano, halogen, Gg-Ci2aryl» substituted C6-Ci2aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R? is hydrogen or alkyl; 25 b) cycloalkyl is nonaromatic, unsaturated or saturated, cyclic or polycyclic C3-Ci2> optionally containing one or more heteroatoms, £uid optionally substituted with one or more substituents selected from the group consisting of: aryloxy, aryl, alkyl, alkoxy, acyloxy, cycloalkyl, substituted cycloalkyl, amino, N-acylamino, nitro, cyano, oxo, hydroxy, 30 halogen, -C(0)0R6, -S(0)nR5, protected -OH and alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, Cg-C^aryl, substituted C0-Ci2aryl, amino, N-acylamino, oxo, -54- ! 1 5 MM TO 258723 hydroxy, cycloalkyl, substituted cycloalkyl, -C(0)0R®, -S(0)nR^, aryloxy, nitro, cyano, halogen and protected -OH, where R6 is hydrogen or alkyl, 5 n is 0-2, R? is hydrogen or alkyl and R5 is hydrogen, cycloalkyl, C6-Ci2aryl» substituted cycloalkyl, substituted Cg-C^aryl, alkyl or alkyl substituted with one or more substituents selected from the. group consisting of: alkoxy, acyloxy, 10 cycloalkyl, substituted cycloalkyl, aryloxy, amino, N-acylamino, oxo, hydroxy, -C(0)0R®, -SCO^R?, nitro, cyano, halogen, Cg-Cigaryl, substituted Cg-Cx2aryl and protected -OH, where R^ is hydrogen or alkyl, n is 0-2 and R? is hydrogen or alkyl; and c) aryl is cyclic or polycyclic aromatic C3-C12, optionally containing 15 one or more heteroatoms, provided that when C is 3 the aromatic ring contains at least two heteroatoms, and when C is 4 the aromatic ring -contains at least one heteroatom, and optionally substituted with one or more substituents selected from the group consisting of: aryloxy, cycloalkyl, substituted cycloalkyl, alkyl, C6-Ci2aiyl, alkoxy, acyloxy, 20 substituted C6-Ci2aiyl, amino, N-acylamino, nitro, cyano, halogen, hydroxy, -C(0)0R®, -S(0)nR5, protected -OH and alkyl substituted with one or more substituents selected from the group consisting ofi alkoxy, acyloxy, Cg-Ci2ary^» substituted Cg-C^aiyl, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, -CXOOR^. -SCO^R?, 25 aryloxy, nitro, cyano, halogen and protected -OH; where R6 is hydrogen or alkyl, n is 0-2, R*7 is hydrogen or alkyl and 30 R5 is hydrogen, cycloalkyl, Cg-Ci2aryl» substituted cycloalkyl,-substituted C6-Qi2aryl, alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, aryloxy, amino, N-acylamino, oxo, hydroxy, -C(0)0R®, -SCO)nR7, nitro, cyano, cycloalkyl, substituted cycloalkyl, halogen, Cg-C^aryl, 35 substituted Cg-C^aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R? is hydrogen or alkyl; and pharmaceutically acceptable salts, hydrates, solvates and esters thereof. -55- NEW ZEALAND 1 5 IWY 1995 PATENT OF"rice 258723

2. A compound of Claim 1 of the Formula >(>A"R (ID in which A and R are as defined in claim 1; and pharmaceutically 5 acceptable salts, hydrates, solvates and esters thereof.

3. A compound of Claim 2 in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing €rom 1-6 carbon atoms and R is 10 a) a linear or branched, saturated or unsaturated hydrocarbon chain containing 1-12 carbon atoms substituted with one or more substituents selected from the group consisting ofi -OCg-Ci^arylj -OCi-C4alkyl, halogen, carboxy and -S(0)JS7t where n is 0-2 and R^ is hydrogen or Ci_4alkyl; 15 b) C3-C8 nonaromatic, unsaturated or saturated, cycloalkyl, optionally substituted with one or more substituents selected from the group consisting of: -OC6-Ci2aiyl, -(Ci^mOH, -OCi-C4alkyl, C6-Ci2aiyl, Ci-C4alkyl, trifluoromethyl, halogen, -(CH2)pCOOH, -S(0)nR^ and protected -OH, where m is 0-4, p is 0-3, n is 0-2 and B7 is 20 hydrogen or C3.4alkyl; or c) C4-Ci2aryl> optionally containing one or more heteroatoms, provided that when C is 4 the aromatic zing contains at least one heteroatom, and optionally substituted with one or more substituents selected from the group consisting.of: -OC6-Ci2aiyl, -(CH2)mOH, 25 C6-Ci2aryl, Ci-C4alkyl,-OCi-C4alkyl, trifluoromethyl, halogen, -(CH2>pCOOH, -S(0)nR? and protected -OH, where m is 0-4, p is Q-3, n is 0-2 and R? iB hydrogen or Ci^alkyl; and pharmaceutically acceptable salts, hydrates, solvates and esters thereof. 30

4. A compound of daiiu 3 wherein A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-4 carbon atoms and R is new zealand 1 5 MAY 1995 PATENT OFFICE 30 35 258723 a) a linear or branched, saturated or unsaturated hydrocarbon chain containing 1-6 carbon atoms substituted with one or more halogens; b) C3-C8 nonaromatic, unsaturated or saturated cycloalkyl, optionally substituted with one or more substituents selected from the

5 group consisting of: halogen, thio, methylsulfonyl, methylsulfoxyl, methylthio, carboxy, hydroxy, trifluoromethyl, phenoxy and methoxy or c) C4-C12aiyl, optionally containing one more heteroatoms, provided that when C is 4 the aromatic ring contains at least one heteroatom, and optionally substituted with one or more substituents 10 selected from the group consisting of: halogen, thio, methylsulfonyl, methylsulfoxyl, methylthio, carboxy, hydroxy, trifluoromethyl, phenoxy and methoxy and pharmaceutically acceptable salts, hydrates, solvates and esters thereof. 15 5. A compound of claim 4 wherein A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-4 carbon atoms and K is a) CF3 b) C5-C7 cycloalkyl or 20 c) C4-C12 aryl, optionally containing one or more heteroatoms, provided that when C is 4 the aromatic ring contains at least one heteroatom, and optionally substituted with one or more substituents selected from the group consisting of: halogen, thio, methylsulfonyl, methylsulfoxyl, methylthio, carboxy, hydroxy, 25 trifluoromethyl, phenoxy and methoxy and pharmaceutically acceptable salts, hydrates, solvates and esters thereof.

6. 17fl-(phenylpropylcarbonyl)-androsta-3,5-diene-3-carboxylic acid.

7. 17B-(benzylcarbonyl)-androsta-3,5-diene-3-carboxylic acid.

8. 17B-(cyclohexylethylcarbonyl)-androsta-3,5-diene-3-carboxylic acid.

9. 17fl-(4-fluorophenethylcarbonyl)-androst-3,5-diene-3-carboxylic acid. - 57 - / 258723

10. 17B-(phenethylcarbonyl)-androst-3,5-diene-3-carboxylic acid. 5

11. 17B-(5,5,5-trifluoro-l-oxopentyl)-androsta-3,5-diene-3-carboxylic acid.

12. 17B-(2-cyclohexyl-l-oxoethyl)-androsta-3,5-diene-3-carboxylic acid. 10

13. 17B-(3-methyl-3-phenyl-l-oxobutyl)-androsta-3,5-diene-3-carboxylic acid.

14. 17B-(3-(4-methoxy phenyl)-l-oxopropyl)-androsta-3,5-diene-3-15 carboxylic acid.

-15. 17B-(3-(4-hydroxy phenyl)-l-oxopropyl)-androsta-3,5-diene-3-carboxylic arid. 20

16. 17B-(2,6 difi uorobenzylcarbonyl)-androsta-3,5-diene-3- carboxylic acid. 25 in which A and R are as defiend in claim 1; and pharmaceutically acceptable salts, hydrates, solvates and esters thereof.

17. A compound of claim 1 of the formula :c-a-r

18. A compound of the formula new zealand 1 5 MAY 1995 patent office -53- 258723 wherein Y is a or B OH I -C-A-R in which A and R are as defined in claim 1; and pharmaceutically 5 acceptable salts, hydrates, solvates and esters thereof.

19. A compound of claim 18 in which the Y substituent is in the B position. 10

20. A compound of claim 18 in which the Y substituent is in the a position.

21. A compound according to claim 1 substantially as hereinbefore defined with reference to any one of the examples. 15

22. A pharmaceutical composition comprising a compound according to any one of claims 1 to 20, and a pharmaceutically acceptable carrier. 20

23. A compound according to any one of claims 1 to 20 for use in therapy.

24. A compound according to any one of claims 1 to 20 in the manufacture of a medicament for use as a steroid 5-a-reductase inhibitor. 25

25. A compound according to any one of claims 1 to 20 in the manufacture of a medicament for use in treatment to reduce prostate size.

26. A compound according to any one of claims 1 to 20 in the 30 manufacture of a medicament for use in treatment of prostatic adenocarcinoma. •59- 2587?;

27. A compound of the formula: in which 5 is 2-thiopyridylcarbonyl and R3 is fluorosulfonyloxy.

28. A compound of the formula: 10 in which A is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-12 carbon atoms; and R8 is substituted alkyl, cycloalkyl or aryl, where a) substituted alkyl is a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1-12 carbon atoms 15 substituted with one or more substituents selected from the group consisting of: aryloxy, alkoxy, acyloxy, amino, N-acylamino, nitro, cyano, oxo, halogen, -C(0)0R® and -S(0)nR5, where R6 is hydrogen or alkyl, 20 n is 0-2 and R5 is hydrogen, cycloalkyl, CQ-Ci2aryl» substituted cycloalkyl, substituted Cg-Cj^aryl, alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, 25 aryloxy, -C(0)0R69 -S(0)nR^, nitro, cyano, halogen, C6-Ci2aryl, substituted and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and R? is hydrogen or alkyl; - 60 - 258723 b) cycloalkyl is nonaromatic, unsaturated or saturated, cyclic or polycyclic C3-C121 optionally containing one or more heteroatoms, and optionally substituted with one or more substituents selected from the group consisting of: aryloxy, aryl, alkyl, alkoxy, acyloxy, cycloalkyl, 5 substituted cycloalkyl, amino, N-acylamino, nitro, cyano, oxo, hydroxy, halogen, -C(0)0R®, -S(0)nR5, protected -OH and alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, Cg-C^aiyl, substituted Cg-C^aryl, amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, -C(0)0R6, -S(0)nR?, 10 aryloxy, nitro, cyano, halogen and protected -OH, where R6 is hydrogen or alkyl, n is 0-2, R? is hydrogen or alkyl and 15 R5 is hydrogen, cycloalkyl, C6-Ci2aryl> substituted cycloalkyl, substituted C6-Ci2aryl, alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, cycloalkyl, substituted cycloalkyl, aryloxy, amino, N-acylamino, oxo, hydroxy, -C(0)0R6, -S(0)nR^, nitro, cyano, halogen, C6-Ci2axyl, 20 substituted Cg-C^aryl and protected -OH, where is hydrogen or alkyl, n is 0-2 and R? is hydrogen or alkyl; and c) aryl is cyclic or polycyclic aromatic C3-Ci2» optionally containing one or more heteroatoms, provided that when C is 3 the aromatic ring contains at least two heteroatoms, and when C is 4 the aromatic ring 25 contains at least one heteroatom, and optionally substituted with one or more substituents selected from the group consisting of: aryloxy, cycloalkyl, substituted cycloalkyl, alkyl, Cg-C^azyl, alkoxy, acyloxy, ' substituted C6:Ci2aryl, amino, N-acylamino, nitro, cyano, halogen, hydroxy, -c(0)orf>, -S(0)nR5, protected -OH and alkyl substituted with 30 one or more substituents selected from the group consisting of: alkoxy, acyloxy, Cg-Ci2aryl» substituted Cg-C^ary^ amino, N-acylamino, oxo, hydroxy, cycloalkyl, substituted cycloalkyl, -C(0)0R6, -SCOjjRT, aiyloxy, nitro, cyano, halogen and protected -OH, where 35 R6 is hydrogen or alkyl, n is 0-2, R? is hydrogen or alkyl and CI nfw zealand 1 5 MAY 1995 patent office *58 723 10 R5 i8 hydrogen, cycloalkyl, Cg-Ci2aryl» substituted cycloalkyl, substituted Cg-C^aryl, alkyl or alkyl substituted with one or more substituents selected from the group consisting of: alkoxy, acyloxy, aryloxy, amino, N-acylamino, oxo, hydroxy, -C(0)0R®, -S(0)nR7, nitro, cyano, cycloalkyl, substituted cycloalkyl, halogen, Cg-Cj^aryl, substituted Cg-Ci2aryl and protected -OH, where R® is hydrogen or alkyl, n is 0-2 and B7 is hydrogen or alkyl; or moieties which can be chemically converted into moieties a, b or c; and R^ is fluorosulfonyloxy, halogen, cyano or -CHO.

29. A compound of the structure .CHO 15

30. A compound of the formula in which A and R® are as defined in claim 28. 20

31. A process for the preparation of a compound as claimed in claim 2, which process comprises reacting a compound of the Formula O II . C-A-R NEW Zealand 1 5 MAY 1995 patent office -62- 258 in which A and R8 are as described in claim 28 with fluorosulfonic anhydride and a base, in a solvent, to form a compound of the formula in which A and R8 are as described above and subsequently reacting said compound in a metal-catalyzed coupling reaction in the presence of an appropriate coupling reagent, followed by an optional, if applicable, hydrolysis reaction and optionally, if applicable, converting R8 to R and thereafter optionally forming a pharmaceutically acceptable salt, hydrate or solvate thereof.

32. A process according to claim 31 in which, in the reaction with fluorosulfonic anhydride, the base is 2,5-di-t-butyl-3-methyl--pyridine and/or the solvent is dichloromethane.

33. A process according to claim 31 or 32 in which the appropriate coupling reagent is carbon monoxide.

34. A process for the preparation of a compound as claimed in claim 2, which process comprises either i) oxidation of a compound of the Formula CVTI) O II 8 C-A-R FOjSO C-A-R CHC (VII) in which A and arc as defined in claim 28 or (ii) reacting a compound of the Formula (XI) 11 -63 - 258723 ^ 8 c-a-r ° (XI) in which A and R8 are as described above, in a metal-catalyzed coupling reaction in the presence of an appropriate coupling reagent, followed by an optional, if applicable, hydrolysis reaction or (iii) hydrolyzing a compound of the Formula (XII) % . c-a-r ° (XII) in which A and R® are as described above, and optionally, if applicable, converting R® to R and thereafter optionally forming a pharmaceutically acceptable salt, hydrate or solvate thereof.

35. A process according to claim 34 in which the appropriate coupling reagent is carbon monoxide.

36. A process for the preparation of a compound as claimed in claim 2, which process comprises reacting, at a reduced temperature, a compound of the formula COOH in the presence of a halogen-Vilsmeier reagent and a solvent theji quenching with Grignard reagent to form a compound of the fdrmula -64 258723 i . C-A-R in which A is as defined above and R® is as described in Formula (IV) and subsequently, in an appropriate solvent, reacting said compound with a cyanating reagent to form a compound of the formula ? . C-A-R in which A and R® are as defined above and subsequently saponifying said compound and optionally, if applicable, converting R® to R, and thereafter optionally forming a pharmaceutically acceptable salt, hydrate or solvate.

37. A process for preparing a pharmaceutical composition containing a pharmaceutically acceptable carrier or diluent and an effective amount of a compound of the Formula (I) as described in claim 1 and pharmaceutically acceptable salts, hydrates, solvates and esters thereof which process comprises bringing the compound of the Formula (I) into association with the pharmaceutically acceptable carrier or diluent.

38. Use of a compound according to any one of claims 1 to 20 in the manufacture of a medicament for use in inhibiting steroid 5-a-reductase. -65- 25872 3

39. The use of a compound according to any one of claims 1 to 20 and an alpha-receptor antagonist compound in the manufacture of medicament for use in the treatment of benign prostatic hypertrophy which use consist of separate sequential or simultaneous administration of a compound according to any one of claims 1 to 20 and an alpha-receptor antagonist compound.

40. The use of a compound according to any one of claims 1 to 20 and minoxidil in the manufacture of a medicament for use in the treatment of male pattern baldness which use consist of separate sequential or simultaneous administration of a compound according to any one of claims 1 to 20 and minoxidil.

41. A compound according to claim 28 and substantially as herein described with reference to any embodiment disclosed.

42. A process according to any one of claims 31-36 and substantially as herein described with reference to any embodiment disclosed.

43. A compound when prepared by the process of any one of claims 31-36 and 42.

44. A process according to claim 37 and substantially as herein described with reference to any embodiment disclosed.

45. A pharmaceutical composition when prepared by the method of claim 37 or 44.

46. The use as claimed in any one of claims 38, 39 and 40 and substantially as herein described with reference to any embodiment disclosed. £ By the authorised agents A. J. PARK & SON .66. Per A _ 'ycz**,