6-aminopenicillanic acid pivaloyloxymethyl ester tosylate salt 、
1-(7-chloro-quinolin-4-yl)-piperidine-4-carboxylic acid 在
N-甲基吗啉 、 benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 24.25h,
以23%的产率得到(2S,5R,6R)-6-{[1-(7-chloro-quinolin-4-yl)-piperidine-4-carbonyl]-amino}-3,3-dimethyl-7-oxo-4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid 2,2-dimethyl-propionyl-oxymethyl ester