methyl O-(2-[6-(methylamino)pyridin-2-yl]ethyl)-L-tyrosinate 、
1,2-Pyrrolidinedicarboxylic acid, 1-(1,1-dimethylethyl) ester 、
2-(1H-Benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate 、
sodium hydroxide 以
N,N-二甲基甲酰胺 为溶剂,
反应 7.0h,
以to afford methyl N-[(1-(tert-butoxycarbonyl)pyrrolidin-2-yl)carbonyl]-O-{2-[6-(methylamino)pyridin-2-yl]ethyl}-L-tyrosinate as a solid (520 mg, 65%)的产率得到methyl N-[(1-(tert-butoxycarbonyl)pyrrolidin-2-yl)carbonyl]-O-{2-[6-(methylamino)pyridin-2-yl]ethyl}-L-tyrosinate