(2S,3R,3aR,3bS,6S,6aS,7aR)-2,6-Bis-(tert-butyl-dimethyl-silanyloxy)-4,4,6a-trimethyl-3-trityloxymethyl-decahydro-cyclopenta[a]pentalene-3,3a-diol 在
氯化二乙基铝 作用下,
以
二氯甲烷 为溶剂,
以96%的产率得到(2R,3S,3aS,3bR,6R,6aR,7aS)-2,6-Bis-(tert-butyl-dimethyl-silanyloxy)-3-hydroxymethyl-4,4,6a-trimethyl-decahydro-cyclopenta[a]pentalene-3,3a-diol