3-[(2,4-dichloro-benzoyl)-(1-methyl-piperidin-4-yl)-amino]-5-(3,3-dimethyl-but-1-ynyl)-thiophene-2-carboxylic acid methyl ester 、
单水氢氧化锂 在
4-[[2-carboxy-5-(3,3-dimethyl-but-1-ynyl)-thiophen-3-yl]-(2,4-dichloro-benzoyl)-amino]-1-methyl-piperidinium chloride 作用下,
生成 4-[[2-carboxy-5-(3,3-dimethyl-but-1-ynyl)-thiophen-3-yl]-(2,4-dichloro-benzoyl)-amino]-1-methyl-piperidinium chloride