Oxidation of estradiol dipropionate (1) with chromium(VI) oxide-3,5-dimethylpyrazole complex yielded 9α-hydroxy-6-oxoestra-1,3,5(10)-triene-3,17β-diyl dipropionate (2) and 6-oxoestra-1,3,5(10)-triene-3,17β-diyl dipropionate (3). Dehydration of compound 2 with phosphorus(V) oxide or acetic anhydride gave 6-oxoestra-1,3,5(10),9(11)-tetraene-3,17β-diyl dipropionate (5). Reduction of compounds 2 and 5 with sodium borohydride afforded 3,6β,9α-trihydroxyestra-1,3,5(10)-triene-17β-yl propionate (4) and 3,6β-dihydroxyestra-1,3,5(10),9(11)-tetraene-17β-yl propionate (6), respectively. The action of thionyl chloride on compound 2 yielded 6-hydroxyestra-1,3,5(10),6,8-pentaene-3,17β-diyl dipropionate (7). Biological tests in vivo of these compounds showed a moderate antiestrogenic activity of compound 4.
雌二醇二丙酸酯(1)在铬(VI)氧化物-3,5-二甲基吡唑配合物的作用下生成了9α-羟基-6-氧基雌甾-1,3,5(10)-三烯-3,17β-二丙酸二丙酸酯(2)和6-氧基雌甾-1,3,5(10)-三烯-3,17β-二丙酸二丙酸酯(3)。化合物2经过磷(V)氧化物或乙酸酐的脱水反应得到了6-氧基雌甾-1,3,5(10),9(11)-四烯-3,17β-二丙酸二丙酸酯(5)。化合物2和5经过硼氢化钠还原分别得到了3,6β,9α-三羟基雌甾-1,3,5(10)-三烯-17β-基丙酸酯(4)和3,6β-二羟基雌甾-1,3,5(10),9(11)-四烯-17β-基丙酸酯(6)。硫酰氯对化合物2的作用产生了6-羟基雌甾-1,3,5(10),6,8-五烯-3,17β-二丙酸二丙酸酯(7)。这些化合物的体内生物学测试显示化合物4具有中等的抗雌激素活性。