(6R,7R)-3-acetoxymethyl-7-{[1-(7-chloro-quinolin-4-yl)-piperidine-4-carbonyl]-amino}-5,8-dioxo-5λ4-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 在
三氯化磷 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 1.0h,
以83%的产率得到(6R,7R)-3-acetoxymethyl-7-{[1-(7-chloro-quinolin-4-yl)-piperidine-4-carbonyl]-amino}-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester