Acetic acid (2S,3S,4S,5R,6R)-4,5-diacetoxy-2-acetoxymethyl-6-[(1R,2R,3S,5R,6S)-3,5-diazido-2-((2R,3R,4R,5R,6R)-3-azido-6-azidomethyl-4,5-bis-benzyloxy-tetrahydro-pyran-2-yloxy)-6-benzyloxy-cyclohexyloxy]-2-methyl-tetrahydro-pyran-3-yl ester 在
甲醇 、
sodium methylate 、
四丁基碘化铵 、 sodium hydride 作用下,
以
四氢呋喃 为溶剂,
生成
(2S,3S,4S,5R,6R)-3,4,5-Tris-benzyloxy-2-benzyloxymethyl-6-[(1R,2R,3S,5R,6S)-3,5-diazido-2-((2R,3R,4R,5R,6R)-3-azido-6-azidomethyl-4,5-bis-benzyloxy-tetrahydro-pyran-2-yloxy)-6-benzyloxy-cyclohexyloxy]-2-methyl-tetrahydro-pyran