(4S,5S,6R)-2,4-dihydroxy-6-(1,1-dimethylethyl)dimethylsiloxy-5-ethenyl-2,4-O-(1-methylethylidine)-undecanenitrile 、
(2S,4S,6S,8S)-bis-C-4,8-cyano-1-iodo-2:4,6:8-bis-O-(1-methylethylidine)-6-O-phenylmethyl-decane-2,4,6,8,10-pentol 在
lithium diethylamide 作用下,
以
四氢呋喃 为溶剂,
反应 17.0h,
以80%的产率得到(3S,5S,7S,9S,11S,13S,14S,15R)-1-O-phenylmethyl-3,7,11-tris-C-cyano-15-O-(1,1-dimethylethyl)dimethylsilyl-14-ethenyl-3:5,7:9,11:13-tris-O-(1-methylethylidine)-eicosane-1,3,5,7,9,11,13,15-octol