methyl (2S,3S,4S,5R,6R)-5-acetyloxy-6-[(2R,3S,4R,5R)-5-azido-2-(4-oxopentanoyloxymethyl)-4-phenylmethoxy-6-(2,2,2-trichloroethanimidoyl)oxyoxan-3-yl]oxy-3-(9H-fluoren-9-ylmethoxycarbonyloxy)-4-phenylmethoxyoxane-2-carboxylate 、
在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
以65%的产率得到N-(benzyl)-benzyloxycarbonyl-5-aminopentyl O-[(methyl 2-O-acetyl-3-O-benzyl-4-O-(9-fluorenylmethoxycarbonyl)-β-D-glucopyranosyluronate)-(1->4)-O-(2-azido-3-O-benzyl-2-deoxy-6-O-levulinoyl-α-D-glucopyranoside)-(1->4)-O-(methyl 2-O-acetyl-3-O-benzyl-α-L-idopyranosyluronate)-(1->4)-O-(2-azido-3-O-benzy-2-deoxy-6-O-levulinoyl-α-D-glucopyranoside)-(1->4)-O-(methyl 2-O-acetyl-3-O-benzyl-β-D-glucopyranosyluronate)]-(1->4)-O-2-azido-3-O-benzyl-2-deoxy-6-O-levulinoyl-α-D-glucopyranoside