1,2,4-tri-O-benzyl-3,6-O-methylene-D-glycero-D-galacto-heptitol-5,7-cyclic sulfate 、
(2R,3S,4S)-3,4-bis((4-methoxybenzyl)oxy)-2-(((4-methoxybenzyl)oxy)methyl)tetrahydrothiophene 在
potassium carbonate 作用下,
以
六氟异丙醇 为溶剂,
反应 168.0h,
以61%的产率得到(4S,5S,6R,7R)-6-(benzyloxy)-4-(((1S,2R,3S,4S)-3,4-bis((4-methoxybenzyl)oxy)-2-(((4-methoxybenzyl)oxy)methyl)tetrahydro-1H-thiophen-1-ium-1-yl)methyl)-7-((S)-1,2-bis(benzyloxy)ethyl)-1,3-dioxepan-5-yl sulfate