4,5-dibromopentyl 4-azido-4-deoxy-2-O-methyl-3-O-(2-naphthylmethyl)-β-D-quinovopyranosyl-(1->3)-2,4-di-O-benzyl-α-L-rhamnopyranosyl-(1->3)-2,4-di-O-benzyl-α-L-rhamnopyranosyl-(1->2)-3,4-di-O-benzyl-α-L-rhamnopyranoside 在
sodium iodide 作用下,
以
丁酮 为溶剂,
反应 5.0h,
以94%的产率得到(2R,3R,4S,5R,6S)-3-azido-5-methoxy-2-methyl-6-[(2S,3S,4R,5R,6S)-2-methyl-6-[(2S,3S,4R,5R,6S)-2-methyl-6-[(2R,3R,4R,5S,6S)-6-methyl-2-pent-4-enoxy-4,5-bis(phenylmethoxy)oxan-3-yl]oxy-3,5-bis(phenylmethoxy)oxan-4-yl]oxy-3,5-bis(phenylmethoxy)oxan-4-yl]oxy-4-(naphthalen-2-ylmethoxy)oxane