1,5-anhydro-2,3,4,6-tetra-O-benzyl-5-thio-D-glucitol 、
2,4-O-benzylidene-L-erythritol-1,3-cyclic sulfate 在
potassium carbonate 作用下,
以
various solvent(s) 为溶剂,
反应 84.0h,
生成 2,3,4,6-tetra-O-benzyl-1,5-dideoxy-1,5-[[(2S,3S)-2,4-O-benzylidene-2,4-dihydroxy-3-(sulfooxy)butyl]-(R)-episulfoniumylidene]-D-glucitol inner salt 、 2,3,4,6-tetra-O-benzyl-1,5-dideoxy-1,5-[[(2S,3S)-2,4-O-benzylidene-2,4-dihydroxy-3-(sulfooxy)butyl]-(S)-episulfoniumylidene]-D-glucitol inner salt