(4S,5S,9S,10S,11R,Z)-11-(tert-butyldimethylsilyloxy)-4,10-dimethyl-7-methylene-5,9-bis[(S)-1-phenylethoxy]tridec-2-en-3-yl benzoate 在
methyllithium lithium bromide 作用下,
以
乙醚 为溶剂,
反应 2.0h,
以75%的产率得到(4S,5S)-7-{(2S,3S,4R)-4-{[tert-butyl(dimethyl)silyl]oxy}-3-methyl-2-[(1S)-1-phenylethoxy]hexyl}-4-methyl-5-[(1S)-1-phenylethoxy]oct-7-en-3-one