2-[1-benzyloxy-2-(8-benzyloxy-9-benzyloxymethyl-3-hydroxy-2,3,4,7,8,9-hexahydro-oxonin-2-yl)-ethyl]-7-(4-bromo-benzyloxy)-6-(4-bromo-benzyloxymethyl)-2,9-dimethyl-octahydro-1,5-dioxa-benzocycloocten-3-one 在
三乙基硅烷 、
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 30.0h,
以70%的产率得到(1R,3S,5Z,8R,9S,11R,13S,14S,16R,18S,20S,21R,23S)-8,13-dibenzyloxy-9-benzyloxymethyl-20-(4-bromobenzyloxy)-21-(4-bromobenzyloxymethyl)-14,18-dimethyl-2,10,15,22-tetraoxatetracyclo[12.10.0
3,11.0
16,23]-tetracos-5-ene