17-ethylenedioxy-3-hydroxyestra-1,3,5(10)-triene-6α-O-ethoxycarbonylmethyl ether 在
盐酸 作用下,
以
丙酮 为溶剂,
反应 6.0h,
以92%的产率得到((6S,8R,9S,13S,14S)-3-Hydroxy-13-methyl-17-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-6-yloxy)-acetic acid ethyl ester