(6R,7R)-7-(2-Amino-4-thiazoleglyoxylamido)-3-[[[2-(hydroxycarbamoyl)-5-methyl-s-triazolo[1,5-a]pyrimidin-7-yl]thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid 、 2-[(aminooxy)methyl]-5-hydroxy-3-methyl-4(3H)-pyrimidinone 、
甲烷磺酸 在
水 、
乙醚 作用下,
以
N,N-二甲基乙酰胺 为溶剂,
反应 20.25h,
以There are obtained 48 mg of (6R,7R)-7-[(Z)-2-(2-amino-4-thiazolyl)-2-[[(1,6-dihydro-5-hydroxy-1-methyl-6-oxo-2-pyrimidinyl)methoxy]imino]acetamido]-3-[ [[2-(hydroxycarbamoyl)-5-methyl-s-triazolo[1,5-a]pyrimidin-7-yl]thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid as a beige powder的产率得到(6R,7R)-7-[(Z)-2-(2-amino-4-thiazolyl)-2-[[(1,6-dihydro-5-hydroxy-1-methyl-6-oxo-2-pyrimidinyl)methoxy]imino]acetamido]-3-[[[2-(hydroxycarbamoyl)-5-methyl-s-triazolo[1,5-a]pyrimidin-7-yl]thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid