(R)-2-Isopropyl-5-[(3S,4S,10R,13R,14S,17R)-4,13,14-trimethyl-3-(tetrahydro-pyran-2-yloxy)-tetradecahydro-cyclopropa[9,10]cyclopenta[a]phenanthren-17-yl]-hexanoic acid methyl ester 在
lithium aluminium tetrahydride 作用下,
以
乙醚 为溶剂,
反应 5.0h,
以14 mg的产率得到(R)-2-Isopropyl-5-[(3S,4S,10R,13R,14S,17R)-4,13,14-trimethyl-3-(tetrahydro-pyran-2-yloxy)-tetradecahydro-cyclopropa[9,10]cyclopenta[a]phenanthren-17-yl]-hexan-1-ol