ethyl 2-{2-[(tert-butoxycarbonyl)(methyl)amino]ethyl}-5-methoxy-1H-indole-3-carboxylate

ethyl 5-[methyl(tert-butoxycarbonyl)amino]-3-oxopentanoate

ethyl 5-[(tert-butoxycarbonyl)(methyl)amino]-3-[(4-methoxyphenyl)amino]pent-2-enoate

4-氧代哌啶酮盐酸盐