5-Butyl-2-ethyl-4-[2'-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]-2H-pyrazole-3-carboxylic acid ethyl ester 在
sodium hydroxide 作用下,
以
甲醇 为溶剂,
反应 3.0h,
以89%的产率得到3-butyl-1-ethyl-4-[[2'-(1H-tetrazol-5-yl) [1,1'-biphenyl]-4-yl]methyl]-1H-pyrazole-5-carboxylic acid