(3aS,4S,4aS,7R,9S,9aS)-methyl 4-hydroxy-9-methanesulfonyloxy-2,2-dimethyl-8-oxo-octahydro-1,3-dioxa-5-thia-7a-azacyclopenta[f]azulene-7-carboxylate 、
溴甲苯 在
sodium hydride 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 2.5h,
以72%的产率得到methyl (1S,2S,3S,7S,8S,11R)-5,5-dimethyl-8-methylsulfonyloxy-9-oxo-2-phenylmethoxy-4,6-dioxa-13-thia-10-azatricyclo[8.3.0.03,7]tridecane-11-carboxylate