(3Z,5S,6S,7S,8Z,11S,12R,13S,14S,15S,16Z)-6,12-bis-(t-butyldimethylsilyloxy)-14-carbamoyioxy-5,7,9,11,13,15-hexamethylnonadeca-3,8,16,18-tetraen-2-one 、
methyl (2R,3S,4R)-3-triethylsilyloxy-2,4-dimethyl-5-oxopentanoate 在
氯代二环己基硼烷 、
三乙胺 作用下,
以
乙醚 为溶剂,
反应 20.17h,
生成 methyl(2R,3S,4S,5S,8Z,10S,11S,12S,13Z,16S,17R,18S,19S,20S,21Z,)-7,11-bis(t-butyldimethylsilyloxy)-19-carbamoyloxy-3-triethylsilyloxy-5-hydroxy-2,4,10,12,14,16,18,20-octamethyl-7-oxotetracosa-8,13,21,23-tetraenoate