methyl 3-O-<2-O-(2-O-acetyl-3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-3,4,6-tri-O-benzyl-α-D-mannopyranosyl>-6-O-<3,6-di-O-(2-O-acetyl-3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-2,4-di-O-benzyl-α-D-mannopyranosyl>-2,4-di-O-benzyl-α-D-mannopyranoside 在
sodium methylate 作用下,
以
四氢呋喃 、
甲醇 为溶剂,
反应 7.0h,
以96.3%的产率得到methyl 2,4-di-O-benzyl-3-O-<3,4,6-tri-O-benzyl-2-O-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-α-D-mannopyranosyl>-6-O-<2,4-di-O-benzyl-3,6-di-O-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-α-D-mannopyranosyl>-α-D-mannopyranoside