1,6-anhydro-2,3-di-O-benzyl-β-D-mannopyranose 、 6-O-acetyl-2,4-di-O-benzyl-3-O-(6-O-acetyl-2-azido-3,4-di-O-benzyl-2-deoxy-β-D-glucopyranosyl)-α-D-galactopyranosyl bromide 以67%的产率得到Acetic acid (2R,3S,4S,5R,6S)-4-((2S,3R,4R,5S,6R)-6-acetoxymethyl-3-azido-4,5-bis-benzyloxy-tetrahydro-pyran-2-yloxy)-3,5-bis-benzyloxy-6-((1R,2R,3S,4S,5R)-3,4-bis-benzyloxy-6,8-dioxa-bicyclo[3.2.1]oct-2-yloxy)-tetrahydro-pyran-2-ylmethyl ester