叔丁基二甲基氯硅烷 、
(2,4,6-tri-O-benzoyl-3-O-levulinoyl-β-D-galactopyranosyl)-(1->3)-2-O-acetyl-N-benzyloxycarbonyl-1,5-dideoxy-1,5-imino-D-glucitol 在
吡啶 作用下,
以
二氯甲烷 为溶剂,
以92%的产率得到(2,4,6-tri-O-benzoyl-3-O-levulinoyl-β-D-galactopyranosyl)-(1->3)-2-O-acetyl-N-benzyloxycarbonyl-6-O-tert-butyldimethylsilyl-1,5-dideoxy-1,5-imino-D-glucitol