17-azolyl steroids useful as androgen synthesis inhibitors
申请人:The University of Maryland, Baltimore
公开号:US05994335A1
公开(公告)日:1999-11-30
Androgen synthesis inhibitors, as well as methods for the use of the same to reduce plasma levels of testosterone and/or dyhydrotestosterone, and to treat prostate cancer and benign prostatic hypertrophy, are disclosed.
Novel 17-azolyl steroids useful as androgen synthesis inhibitors
申请人:——
公开号:US20010001099A1
公开(公告)日:2001-05-10
Androgen synthesis inhibitors, as well as methods for the use of the same to reduce plasma levels of testosterone and/or dyhydrotestosterone, and to treat prostate cancer and benign prostatic hypertrophy, are disclosed.
17-Azolyl steroids useful as androgren synthesis inhibitors
申请人:The University of Marylsnd, Baltimore
公开号:US06200965B1
公开(公告)日:2001-03-13
Androgen synthesis inhibitors, as well as methods for the use of the same to reduce plasma levels of testosterone and/or dyhydrotestosterone, and to treat prostate cancer and benign prostatic hypertrophy, are disclosed.
Nucleophilic vinylic “addition-elimination” substitution reaction of 3β-acetoxy-17-chloro-16-formylandrosta-5,16-diene: A novel and general route to 17-substituted steroids. Part 1 - synthesis of novel 17-azolyl-Δ16 steroids; inhibitors of 17α-hydroxylase/17, 20-lyase (17α-lyase)
作者:Vincent C.O. Njar、Gregory T. Klus、Angela M.H. Brodie
DOI:10.1016/s0960-894x(96)00512-4
日期:1996.11
We have discovered that chlorine in 3 beta-acetoxy-17-chloro-16-formylandrosta-5,16-diene (1) can be smoothly displaced by nitrogen heterocyclic nucleophiles (het(-)) to give heretofore unknown 17-substituted-Delta(16) steroids in high yields (73-92%). This enabled us to synthesize novel 3 beta-hydroxy-17-(1H-1,2,4-triazol-1-yl)androsta-5,16-diene (4) and 3 beta-hydroxy-17-(1H-imidazol-1-yl)androsta-5,16-diene (7), both of which are potent inhibitors of rat testicular 17 alpha-lyase. Spectroscopic studies with a modified form of human 17 alpha-lyase indicates that the inhibition process involves coordination of steroidal azole nitrogen to the heme-iron of the enzyme. Copyright (C) 1996 Elsevier Science Ltd
NOVEL PRODRUGS OF C-17-HETEROARYL STEROIDAL CYP17 INHIBITORS/ANTIANDROGENS: SYNTHESIS, IN VITRO BIOLOGICAL ACTIVITIES, PHARMACOKINETICS AND ANTITUMOR ACTIVITY
申请人:Njar Vincent C.O.
公开号:US20110118219A1
公开(公告)日:2011-05-19
Prodrugs of steroidal C-17 benzoazoles, pyrimidinoazoles(azabenzoazoles) and diazines. Methods of synthesis are also described, whereby a prodrug group is substituted for a functional group at A ring portion of the ABC ring structure of the steroid. Suitable prodrug groups include amino acid groups, succinate groups, phosphate groups, or sulfamate groups. The prodrugs of the disclosed compounds allow for improved oral bioavailability of the compounds that are inhibitors of human CYP17 enzyme as well as potent antagonists of both wild type and mutant androgen receptors (AR). The compounds and the corresponding prodrugs are useful for the treatment of conditions such as human prostate cancer, breast cancer, and prostate hyperplasia.