4-methoxyphenyl 3,4-di-O-benzoyl-α-D-mannopyranosyl-(1->6)-2-O-acetyl-3,4-di-O-benzoyl-α-D-mannopyranosyl-(1->6)-4-O-acetyl-3-O-benzoyl-α-D-mannopyranoside 、
[(2R,3R,4S,5S,6S)-3,4,5-三苯甲酰氧基-6-(2,2,2-三氯亚氨代乙酰)氧基-四氢吡喃-2-基]甲基苯甲酸酯 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
以91%的产率得到4-methoxyphenyl 2,3,4,6-tetra-O-benzoyl-α-D-mannopyranosyl-(1->6)-[2,3,4,6-tetra-O-benzoyl-α-D-mannopyranosyl-(1->2)-]-3,4-di-O-benzoyl-α-D-mannopyranosyl-(1->6)-2-O-acetyl-3,4-di-O-benzoyl-α-D-mannopyranosyl-(1->6)-[2,3,4,6-tetra-O-benzoyl-α-D-mannopyranosyl-(1->2)-]-4-O-acetyl-3-O-benzoyl-α-D-mannopyranoside