1,3-di-O-benzylidene-2,4,6-tri-O-p-methoxybenzyl-D-perseitol-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69%的产率得到2,3,5-tri-O-p-methoxybenzyl-1,4-dideoxy-1,4-[(2S,3S,4R,5R,6S)-5,7-benzylidene-2,4,6-tri-O-p-methoxybenzyl-3-(sulfooxy)heptyl]-(R)-epi-sulfoniumylidine-D-arabinitol inner salt