乙酸酐 、 4,6-O-ethylidene-1,2-O-isopropylidene-3-O<3,4,6-tri-O-benzyl-2-O-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-α-D-mannopyranosyl>-α-D-galactopyranose 生成
1,2,4,6-tetra-O-acetyl-3-O-<3,4,6-tri-O-acetyl-2-O-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl)-α-D-mannopyranosyl>-D-galactopyranose