Benzoic acid (2R,3R)-2,3-dihydroxy-3-(6-hydroxy-7-methyl-5-methylene-8,10-dioxo-2-oxa-7,9-diaza-bicyclo[4.2.2]dec-1-yl)-2-methyl-propyl ester 、
碘甲烷 在
potassium carbonate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 30.0h,
以22%的产率得到Benzoic acid (R)-2-hydroxy-2-(6-hydroxy-9-methyl-1-methylcarbamoyl-5-methylene-10-oxo-2,7-dioxa-9-aza-bicyclo[4.2.2]dec-8-yl)-propyl ester