quinine 、
(S)-N-(1-(1H-benzo[d][1,2,3]triazol-1-yl)-4-methyl-1-oxopentan-2-yl)-1-ethyl-7-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxamide 在
potassium carbonate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以69%的产率得到(2S)-(1R)-(6-methoxyquinolin-4-yl)(5-vinylquinuclidin-2-yl)-methyl-2-(1-ethyl-7-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxamido)-4-methylpentanoate