Acetic acid (3S,8R,10R,13S,16R,17S)-3-acetoxy-10,13-dimethyl-16-(toluene-4-sulfonyloxymethyl)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl ester 在
lithium aluminium tetrahydride 作用下,
以
四氢呋喃 为溶剂,
以87.8%的产率得到16-methylandrost-5-ene-3β,17-diol