作者:Shengrong Li、Edward J. Parish、Carla Rodriguez-Valenzuela、Angela M.H. Brodie
DOI:10.1016/s0968-0896(98)00097-2
日期:1998.9
A novel class of steroidal A/B ring isoxazoles have been prepared by two independent reaction schemes using 3 beta,17 beta-diacetoxyandrost-5-ene (1) and 3 beta,17 beta-diacetoxyandrost-4-en-6-one (4) as synthetic precursors. The key common intermediate in these syntheses, 3 beta,17 beta-diacetoxyandrost-4-eno[6,5,4-c,d] isoxazole (3), was prepared by synthetic methods described in both schemes. Further
已通过两个独立的反应方案,分别使用3 beta,17 beta-diacetoxyandrost-5-ene(1)和3 beta,17 beta-diacetoxyandrost-4-en-6-one(1)制备了一类新型的甾体A / B环异恶唑。 4)作为合成前体。通过两种方案中所述的合成方法,制备了这些合成中的关键常用中间体3 beta,17 beta-diacetoxyandrost-4-eno [6,5,4-c,d]异恶唑(3)。对3的进一步化学修饰得到3 beta,17 beta-dihydroxyandrost-4-eno [6,5,4-c,d]异恶唑(6)和androst-3,17-dione-4-eno [6,5,4 -c,d]异恶唑(7)和17个β-羟基雄烷-3-一-4-eno [6,5,4-c,d]异恶唑(9)。进行人类胎盘雌激素合成酶(芳香化酶)生物测定,得出以下IC50值,其酶活性降低了50%:6,120