benzyl 2,3,4-tri-O-benzoyl-6-deoxy-6-fluoro-α-D-mannopyranosyl-(1→3)-2-O-benzoyl-4-O-benzyl-β-D-mannopyranosyl-(1→4)-3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranoside 、
[(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,
反应 16.0h,
以73%的产率得到benzyl 2,3,4-tri-O-benzoyl-6-deoxy-6-fluoro-α-D-mannopyranosyl-(1→3)-[2,3,4,6-tetra-O-benzoyl-α-D-mannopyranosyl-(1→6)]-2-O-benzoyl-4-O-benzyl-β-D-mannopyranosyl-(1→4)-3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranoside