benzyl 2-O-[(3-O-allyl-2,4,6-tri-O-benzoyl-α-D-mannopyranosyl)-(1->3)-(2,4,6-tri-O-benzoyl-α-D-mannopyranosyl)-(1->3)-(2,4,6-tri-O-benzoyl-α-Dmannopyranosyl)]-3,4,6-tri-O-benzyl-α-D-mannopyranoside 在
甲醇 、
sodium 作用下,
以
甲醇 为溶剂,
以64%的产率得到benzyl (3-O-allyl-α-D-mannopyranosyl)-(1->3)-(α-D-mannopyranosyl)-(1->3)-(α-D-mannopyranosyl)-(1->2)-(3,4,6-tri-O-benzyl-α-D-mannopyranoside)