(S)-2-Bromo-propionic acid isobutyl ester 、
(5S,6R,7R)-5-Benzo[1,3]dioxol-5-yl-7-(2-hydroxy-4-methoxy-phenyl)-6,7-dihydro-5H-[1]pyrindine-6-carboxylic acid tert-butyl ester 在
potassium carbonate 、 potassium iodide 作用下,
以
丁酮 为溶剂,
生成 (5S,6R,7R)-5-Benzo[1,3]dioxol-5-yl-7-[2-((R)-1-isobutoxycarbonyl-ethoxy)-4-methoxy-phenyl]-6,7-dihydro-5H-[1]pyrindine-6-carboxylic acid tert-butyl ester 、 (5S,6R,7R)-5-Benzo[1,3]dioxol-5-yl-7-[2-((S)-1-isobutoxycarbonyl-ethoxy)-4-methoxy-phenyl]-6,7-dihydro-5H-[1]pyrindine-6-carboxylic acid tert-butyl ester