chloromethyl pentan-3-yl carbonate 、 2-n-Propyl-5-acetyl-3-[2'-(1-trityl-1H-tetrazol-5-yl)biphenyl-4-yl]methyl-4,5,6,7-tetrahydroimidazo[4,5-c]pyridine-4-carboxylic acid 在
chloromethyl pentan-3-yl carbonate 作用下,
生成
2-n-propyl-5-acetyl-3-[2'-(1-trityl-1H-tetrazol-5-yl)biphenyl-4-yl]methyl-4,5,6,7-tetrahydroimidazo-[4,5-c]pyridine-4-carboxylic acid 3-pentyloxycarbonyloxymethyl ester