8-(tert-butyl-dimethyl-silanyloxy)-9-(tert-butyl-dimethyl-silanyloxymethyl)-3,4a,8-trimethyl-2-pent-3-enyl-2,3,4,4a,5a,8,9,10a,11,11a-decahydro-1,5,10-trioxa-cyclohepta[b]naphthalen-3-ol 、 [7-[3-(tert-butyl-diphenyl-silanyloxy)-propyl]-4a,10a-dimethyl-3-(triethyl-silanyloxy)-5-(triisopropyl-silanyloxy)-decahydro-1,8,10-trioxa-anthracen-2-yl]-acetic acid 在
2,4,6-三氯苯甲酰氯 、
三乙胺 、
4-二甲氨基吡啶 作用下,
以
四氢呋喃 、
甲苯 为溶剂,
反应 4.0h,
以90%的产率得到[(1R,3S,5R,6S,8R,10S,12R,13S)-13-[tert-butyl(dimethyl)silyl]oxy-12-[[tert-butyl(dimethyl)silyl]oxymethyl]-3,5,13-trimethyl-6-[(Z)-pent-3-enyl]-2,7,11-trioxatricyclo[8.5.0.03,8]pentadec-14-en-5-yl] 2-[(1R,3R,5S,6R,8S,10R,12S,14S)-12-[3-[tert-butyl(diphenyl)silyl]oxypropyl]-1,3-dimethyl-5-triethylsilyloxy-14-tri(propan-2-yl)silyloxy-2,7,11-trioxatricyclo[8.4.0.03,8]tetradecan-6-yl]acetate