17-Imidazolyl, Pyrazolyl, and Isoxazolyl Androstene Derivatives. Novel Steroidal Inhibitors of Human Cytochrome C<sub>l7,20</sub>-Lyase (P450<sub>17α</sub>)
作者:Yang-zhi Ling、Ji-song Li、Yang Liu、Katsuya Kato、Gregory T. Klus、Angela Brodie
DOI:10.1021/jm970337k
日期:1997.9.1
report the synthesis and activity of novel 17-imidazolyl, pyrazolyl, and isoxazolyl androstene derivatives as potential agents for the treatment of prostatic cancer. A number of 17-(4'-Imidazolyl) derivatives were prepared by condensing the corresponding 17-ketol acetate side chain with aldehyde and ammonium hydroxide. The 17 beta-(4'imidazolyl) derivatives (2a, 2e, 4a, 4c) were found to be potent inhibitors
我们最近描述了许多P450(17 alpha)抑制剂,P450(17 alpha)是雄激素生物合成的关键酶。在这里,我们报告新型17-咪唑基,吡唑基和异恶唑基雄烯酮衍生物的合成和活性,作为治疗前列腺癌的潜在药物。通过将相应的17-酮醇乙酸酯侧链与醛和氢氧化铵缩合来制备许多17-(4'-咪唑基)衍生物。发现17种β-(4'咪唑基)衍生物(2a,2e,4a,4c)是人睾丸P450(17α)的有效抑制剂,其活性比酮康唑更大。咪唑环和类固醇D环之间的并置似乎对提供抑制特性很重要,具有17个β-(2'-咪唑基)环(9a,10)或20个β-(2'-咪唑基)环的化合物(12),是弱抑制剂,而不是17β-(4'-咪唑基)环(2a,4a)。在17-(4'-咪唑基)衍生物中,引入17α-羟基(4b)和16α,17α-环氧基(2d)降低了效价(2a-> 2d; lC50 66-> 430 nM; 4a-> 4b;