氯磺酰异氰酸酯 、
1,2-O-isopropylidene-3-O-methyl-6-O-methylsulfonyl-5-O-(prop-1'-enyl)-α-D-glucofuranose 在
sodium carbonate 作用下,
以
甲苯 为溶剂,
生成 (3'R,4'S)-1,2-O-isopropylidene-3-O-methyl-5-O-(3'-methyl-2'-oxoazetidin-4'-yl)-6-O-methylsulfonyl-α-D-glucofuranose 、 (3'S,4'R)-1,2-O-isopropylidene-3-O-methyl-5-O-(3'-methyl-2'-oxoazetidin-4'-yl)-6-O-methylsulfonyl-α-D-glucofuranose