(2R,3S,4R,5S,8S,9S,10R,13R,14S,17R)-17-((R)-1,5-Dimethyl-hexyl)-10,13-dimethyl-hexadecahydro-20-oxa-cyclopropa[2,3]cyclopenta[a]phenanthrene-4,5-diol 在
lithium aluminium tetrahydride 作用下,
以
四氢呋喃 为溶剂,
以92.5%的产率得到(3R,4R,5S,8S,9S,10R,13R,14S,17R)-17-((R)-1,5-Dimethyl-hexyl)-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthrene-3,4,5-triol