quinine 、
(S)-N-(1-(1H-benzo[d][1,2,3]triazol-1-yl)-3-methyl-1-oxobutan-2-yl)-5-ethyl-8-oxo-5,8-dihydro-[1,3]dioxolo[4,5-g]quinoline-7-carboxamide 在
potassium carbonate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以68%的产率得到(2S)-(1R)-(6-methoxyquinolin-4-yl)(5-vinylquinuclidin-2-yl)-methyl 2-(5-ethyl-8-oxo-5,8-dihydro-[1,3]dioxolo[4,5-g]quinoline-7-carboxamido)-3-methylbutanoate