(S)-2-[(2R,3R,4R,5R,6R)-5-Azido-4-((3aR,4R,5aR,8S,9aS,9bS)-2,2-dibutyl-8-phenyl-hexahydro-1,3,5,7,9-pentaoxa-2-stanna-cyclopenta[a]naphthalen-4-yloxy)-3-hydroxy-6-methoxy-tetrahydro-pyran-2-ylmethoxy]-3-cyclohexyl-propionic acid methyl ester 、
sodium methylate 、
N,N''-[2,7-二叔丁基-9,9-二甲基-9H-氧杂蒽-4,5-二基]二[N'-丁基-硫脲] 在
cesium fluoride 作用下,
以
乙二醇二甲醚 、
甲醇 为溶剂,
反应 20.0h,
以40 mg的产率得到methyl {4,6-O-benzylidene-3-O-[(S)-2-cyclohexyl-1-(methoxycarbonyl)ethyl]-β-D-galactopyranosyl}-(1->3)-2-azido-6-O-[(S)-2-cyclohexyl-1-(methoxycarbonyl)ethyl]-2-deoxy-β-D-galactopyranoside