Antifertility agents. 11. Secosteroids. 5. Synthesis of 9,11-secoestradiol
作者:Pannalal Kole、Suprabhat Ray、Ved P. Kamboj、Nitya Anand
DOI:10.1021/jm00241a026
日期:1975.7
9,11-Secoestradiol (9) and 11-hydroxy-9,11-secoestradiol (12) have been synthesized starting from 17-acetoxyestradiol 3-methyl ether (1) and found to possess significant antifertility activity in rats. 3-Methoxy-9,11-seco-9-oxo-17beta-acetoxyestra-1,3,5(10)-trien-11-oic acid (2), prepared by CrO3 oxidation of 1, on hydrogenolysis gave methyl 17beta-hydroxy-3-methoxy-9,11-secoestra-1,3,5(10)-triene-11-carboxylate
从17-乙酰氧基雌二醇3-甲基醚(1)开始合成了9,11-雌二醇(9)和11-羟基-9,11-仲雌二醇(12),发现它们在大鼠中具有显着的抗生育活性。3-甲氧基-9,11-seco-9-oxo-17beta-acetoxyestra-1,3,5(10)-trien-11-oic acid(2),由CrO3氧化1,在氢解后制得甲基17beta-羟基-3-甲氧基-9,11-仲骨架-1,3,5(10)-三烯-11-羧酸酯(3)。用LiAlH4处理3的17-O-THP衍生物,得到17β-(O-四氢吡喃基)-3-甲氧基-11-羟基-9,11-仲-1,3,5(10)-三烯(5) 。LiAlH4还原时5的11-O-甲磺酸酯,然后在碱条件下进行弱酸处理和脱甲基,得到9。LiAlH4还原3时得到9,11-seco-11-羟基雌二醇3-甲基醚(11),脱甲基时得到9 ,11-seco-11-羟基雌二醇(12)。