allyl 2-acetamido-2-deoxy-3,6-di-O-benzyl-α-D-glucopyranoside 、 O-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl)-(1->3)-O-(2,4,6-tri-O-acetyl-β-D-mannopyranosyl)-(1->4)-2-methyl-3,6-di-O-acetyl-1,2-dideoxy-α-D-glucopyrano-<2,1-d>-2-oxazoline 在
对甲苯磺酸 作用下,
以
1,2-二氯乙烷 、
甲苯 为溶剂,
反应 7.0h,
以22%的产率得到allyl O-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl)-(1<*>3)-O-(2,4,6-tri-O-acetyl-β-D-mannopyranosyl)-(1<*>4)-O-(2-acetamido-3,6-di-O-acetyl-2-deoxy-β-D-glucopyranosyl)-(1<*>4)-2-acetamido-3,6-di-O-benzyl-2-deoxy-α-D-glucopyranoside