4,4,14α-trimethyl-5α-pregnane-3,11,20-trione 在
lithium aluminium tetrahydride 作用下,
以
乙醚 为溶剂,
以650 mg的产率得到(3S,5R,8R,9S,10S,11S,13R,14S,17S)-17-(1-hydroxyethyl)-4,4,10,13,14-pentamethyl-2,3,5,6,7,8,9,11,12,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-3,11-diol