(3R,5S)-5-{[9-(4-methoxy-butyl)-9H-xanthen-9-ylmethyl]-carbamoyl}-piperidine-1,3-dicarboxylic acid 1-tert-butyl ester 、
ethyl-(6-methoxy-pyridin-2-ylmethyl)-amine 以
三乙胺 为溶剂,
生成 (3R,5S)-3-[ethyl-(6-methoxy-pyridin-2-ylmethyl)-carbamoyl]-5-{[9-(4-methoxy-butyl)-9H-xanthen-9-ylmethyl]-carbamoyl}-piperidine-1-carboxylic acid tert-butyl ester