3-(4-fluorobenzoyl)-4-oxopiperidine-1-carboxylic acid tert-butyl ester 、 2-methyl-pyrrolidine-1-carboxamidine trifluoroacetic acid 在
potassium carbonate 作用下,
以
乙腈 为溶剂,
反应 15.0h,
以81%的产率得到4-(4-fluoro-phenyl)-2-(2-methyl-pyrrolidin-1-yl)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine-6-carboxylic acid tert-butyl ester