(6R,7R)-7-(2-Chloro-acetylamino)-3-(5-methyl-[1,3,4]thiadiazol-2-ylsulfanylmethyl)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 、
2-thio-4-oxo-5,6-dimethyl-3,4-dihydrothieno<2,3-d>pyrimidine potassium salt 在
potassium hydrogencarbonate 作用下,
以
水 、
N,N-二甲基甲酰胺 为溶剂,
反应 2.5h,
以80%的产率得到Potassium; (6R,7R)-7-[2-(5,6-dimethyl-4-oxo-3,4-dihydro-thieno[2,3-d]pyrimidin-2-ylsulfanyl)-acetylamino]-3-(5-methyl-[1,3,4]thiadiazol-2-ylsulfanylmethyl)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylate