(2S,6R)-2-(2-hydroxyethyl)-6-methylpiperidine-1-carboxylic acid tert-butyl ester

(2R,3aS,6aS,9aR)-2-methyldecahydropyrido[2,1,6-de]quinolizin-1(2H)-one

2-((2S,6S)-1-(tert-butoxycarbonyl)-6-((R)-2-methyl-4-oxopentyl)piperidin-2-yl)acetic acid