3,4-bis[(2-methoxyethoxy)methoxy]benzoic acid 、
(6R,7R)-7-<2-(Z)-(2-trityl-amino-thiazol-4-yl)-3-(dimethoxy-phosphoryl)-acryloylamino>-3-chloromethyl-8-oxo-5-thia-1-azabicyclo<4.2.0>oct-2-ene-2-carboxylic acid p-methoxybenzyl ester 在
sodium iodide 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以21%的产率得到(6R,7R)-3-(3,4-Dihydroxy-benzoyloxymethyl)-7-{(Z)-3-(dimethoxy-phosphoryl)-2-[2-(trityl-amino)-thiazol-4-yl]-acryloylamino}-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 4-methoxy-benzyl ester