5,7,3',4'-tetra-O-(tert-butyldimethylsilyl)flav-3-en-3-ol 3-O-glucoside 在
甲醇 、
sodium methylate 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以82%的产率得到(2S,3R,4S,5S,6R)-2-[(R)-2-[3,4-Bis-(tert-butyl-dimethyl-silanyloxy)-phenyl]-5,7-bis-(tert-butyl-dimethyl-silanyloxy)-2H-chromen-3-yloxy]-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol