2,2-dimethylpropionic acid 4-({[4-(4-fluorophenyl)-5-hydroxymethyl-1-isopropyl-3-phenyl-1H-pyrrole-2-carbonyl]amino}methyl)benzyl ester 、
三苯基膦氢溴酸盐 以
二氯甲烷 为溶剂,
反应 13.5h,
以to provide desired [5-[4-(2,2-dimethyl-propionyloxymethyl)-benzylcarbamoyl]-3-(4-fluoro-phenyl)-1-isopropyl-4-phenyl-1H-pyrrol-2-ylmethyl]-triphenyl-phosphonium bromide (5.97 g, 100%) in sufficient purity for use in the next step的产率得到[5-[4-(2,2-dimethylpropionyloxymethyl)benzylcarbamoyl]-3-(4-fluorophenyl)-1-isopropyl-4-phenyl-1H-pyrrol-2-ylmethyl]triphenylphosphonium bromide