octyl 3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranoside 、
ethyl 3,4-di-O-benzyl-6-O-(2,3,4,6-tetra-O-benzyl-α-D-mannopyranosyl)-2-O-(2-propenyl)-1-thio-α-D-mannopyranoside 在
camphor-10-sulfonic acid 作用下,
以
二氯甲烷 为溶剂,
以25%的产率得到octyl 3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranoside-ethyl 3',4'-di-O-benzyl-6'-O-(2",3",4",6"-tetra-O-benzyl-α-D-mannopyranosyl)-2-O-(2-propenyl)-1'-thio-α-D-mannopyranoside-2',4-isopropylidene acetal