tert-butyl-[3-[(1S,3R,6S,7R,9S,12R,14R,15S,17R,19R)-6-[tert-butyl(dimethyl)silyl]oxy-6,12-dimethyl-15-tri(propan-2-yl)silyloxy-17-[3-tri(propan-2-yl)silyloxypropyl]-2,8,13,18-tetraoxatetracyclo[10.8.0.03,9.014,19]icosan-7-yl]propoxy]-dimethylsilane 在
camphor-10-sulfonic acid 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
反应 1.0h,
以74%的产率得到3-[(1S,3R,6S,7R,9S,12R,14R,15S,17R,19R)-6-[tert-butyl(dimethyl)silyl]oxy-6,12-dimethyl-15-tri(propan-2-yl)silyloxy-17-[3-tri(propan-2-yl)silyloxypropyl]-2,8,13,18-tetraoxatetracyclo[10.8.0.03,9.014,19]icosan-7-yl]propan-1-ol