O-(7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate 、
3-chloro-6-(3-furanyl)-8-(trifluoromethyl)imidazo[1,2-a]pyridine-2-carboxylic acid 、 Methyl 2-(3-pyrrolidinyl)benzoate 在
2-[1-(3-chloro-6-furan-3-yl-8-trifluoromethyl-imidazo[1,2-a]pyridine-2-carbonyl)-pyrrolidin-3-yl]-benzoic acid methyl ester 作用下,
以gave 2-[1-(3-chloro-6-furan-3-yl-8-trifluoromethyl-imidazo[1,2-a]pyridine-2-carbonyl)-pyrrolidin-3-yl]-benzoic acid methyl ester (compound 338)的产率得到2-[1-(3-chloro-6-furan-3-yl-8-trifluoromethyl-imidazo[1,2-a]pyridine-2-carbonyl)-pyrrolidin-3-yl]-benzoic acid methyl ester