methyl 3-O-(2-O-acetyl-3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-2,4-di-O-benzyl-6-O-<2,6-di-O-(2-O-acetyl-3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-3,4-di-O-benzyl-α-D-mannopyranosyl>-α-D-mannopyranoside 在
sodium methylate 作用下,
以
四氢呋喃 、
甲醇 为溶剂,
反应 16.0h,
以78.3%的产率得到methyl 2,4-di-O-benzyl-6-O-<3,4-di-O-benzyl-2,6-di-O-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-α-D-mannopyranosyl>-3-O-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-α-D-mannopyranoside