(4aR,4bS,5S,6aS,6bS,9aR,10aS,10bS)-6b-glycoloyl-5-hydroxy-4a,6a-dimethyl-8-propyl-3,4,4a,4b,5,6,6a,6b,9a,10,10a,10b,11,12-tetradecahydro-2H-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-2-one 、
叔丁基二甲基氯硅烷 在
吡啶 作用下,
以
二氯甲烷 为溶剂,
以82%的产率得到(4aR,4bS,5S,6aS,6bS,9aR,10aS,10bS)-6b-({[tert-butyl(dimethyl)silyl]oxy}acetyl)-5-hydroxy-4a,6a-dimethyl-8-propyl-3,4,4a,4b,5,6,6a,6b,9a,10,10a,10b,11,12-tetradecahydro-2H-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-2-one