2-O-acetyl-4-azido-3-O-benzyl-4,6-dideoxy-α-D-mannopyranosyl chloride 、
octyl 2,3,4-tri-O-benzyl-β-D-glucopyranoside 在
molecular sieve 、
silver trifluoromethanesulfonate 作用下,
以
二氯甲烷 为溶剂,
以67.6%的产率得到Acetic acid (2S,3S,4S,5R,6R)-5-azido-4-benzyloxy-6-methyl-2-((2R,3R,4S,5R,6R)-3,4,5-tris-benzyloxy-6-octyloxy-tetrahydro-pyran-2-ylmethoxy)-tetrahydro-pyran-3-yl ester