benzyl 4-[2-(5-(benzyloxy)-1H-indol-3-yl)-2-oxoethyl]piperidine-1-carboxylate 、 2-(N-Cbz-piperidin-4-yl)propionic acid chloride 在
benzyl 4-(3-[5-(benzyloxy)-1H-indol-3-yl]-3-oxopropyl)piperidine-1-carboxylate 、 crude product 、 silica 、 petroleum ether ethyl acetate 作用下,
以Compound 11 was obtained as a slightly yellow solid (2815 mg, 5.67 mmol, 87%)的产率得到benzyl 4-(3-[5-(benzyloxy)-1H-indol-3-yl]-3-oxopropyl)piperidine-1-carboxylate