叔丁基二苯基氯硅烷 、
2,2-Dimethyl-propionic acid (2R,3S,4R,5R,6R)-3,4-bis-benzyloxy-6-[(1R,4S,5S,6R)-1,4-bis-(tert-butyl-dimethyl-silanyloxy)-10-hydroxy-6-(4-methoxy-benzyloxy)-5-methyl-2-methylene-decyl]-5-methyl-tetrahydro-pyran-2-ylmethyl ester 在
咪唑 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 0.5h,
以94%的产率得到2,2-dimethyl-propionic acid 3,4-bis-benzyloxy-6-{1-(tert-butyl-dimethyl-silanyloxy)-2-[2-(tert-butyl-dimethyl-silanyloxy)-8-(tert-butyl-diphenyl-silanyloxy)-4-(4-methoxy-benzyloxy)-3-methyl-octyl]-allyl}-5-methyl-tetrahydro-pyran-2-ylmethyl ester