methyl O-(3-O-acetyl-2,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1<*>2)-O-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1<*>2)-O-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1<*>3)-2,4,6-tri-O-benzyl-α-D-mannopyranoside 在
sodium methylate 作用下,
以
甲醇 为溶剂,
以94%的产率得到methyl O-(2,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1<*>2)-O-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1<*>2)-O-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1<*>3)-2,4,6-tri-O-benzyl-α-D-mannopyranoside