1,6,7,8,9,9a-hexahydropyrido[2,1-c][1,4]oxazine-3,4-dione

L-哌啶-2-甲酸

benzyl (2S)-2-(hydroxymethyl)piperidine-1-carboxylate

2-(Chloromethyl)piperidine hydrochloride (1:1)

1-甲基-2-哌啶甲醇