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.
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