tert-butyl 3-[(1R,2S,5S)-2-hydroxy-1-methyl-5-[(2-methylpropan-2-yl)oxy]-2-(2-phenylethynyl)cyclopentyl]propanoate 在
lithium aluminium tetrahydride 作用下,
生成 (1S,3aS,3bS,4S,10bS,12aR)-1-tert-Butoxy-3a-hydroxy-12a-methyl-4-phenyl-1,2,3,3a,3b,4,10b,11,12,12a-decahydro-5-oxa-indeno[5,4-a]fluoren-10-one