(1aS,3aR,6bR)-5-(1-methyl-1H-tetrazol-5-ylsulphanylmethyl)-1-oxo-1a,2,3,3a,4,6b-hexahydro-1H-2,6a-diazacyclobut[cd]indene-6-carboxylic acid trifluoroacetate 、
氰基乙酸N-羟基丁二酰亚胺酯 在
碳酸氢钠 作用下,
以
N-甲基乙酰胺 为溶剂,
生成
(1aS,3aR,6bR)-2-Cyanoacetyl-5-(1-methyl-1H-tetrazol-5-ylsulphanylmethyl)-1-oxo-1a,2,3,3a,4,6b-hexahydro-1H-2,6a-diazacyclobut[cd]indene-6-carboxylic acid sodium salt