N-[(9H-fluoren-9-yl)-methoxycarbonyl]-O-(2-azido-6-O-[tert-butyldiphenylsilyl]-2-deoxy-α-D-galactopyranosyl)-L-serine tert-butyl ester 在
对甲苯磺酸 作用下,
以
二氯甲烷 为溶剂,
反应 43.5h,
生成 N-[(9H-fluoren-9-yl)-methoxycarbonyl]-O-{[methyl (5'-acetamido-7',8',9'-tri-O-acetyl-4'O,5'N-carbonyl-3’,5’-dideoxy-D-glycero-α-D-galacto-2’-nonulopyranosyl)onate]-(2’-6)-(2-azido-2-deoxy-3,4-Oisopropylidene-α-D-galactopyranosyl)}-L-serine tert-butyl ester