3-methoxy-19-norpregna-1,3,5(10),16-tetraen-20-one 在
dimethyl sulfide borane 、 (R)-(+)-tetrahydro-1-methyl-1H,3H-pyrrolo[1,2-c][1,3,2]oxazaborole 作用下,
反应 0.5h,
以95%的产率得到(1S)-1-[(8S,9S,13S,14S)-3-methoxy-13-methyl-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-17-yl]ethanol