(4aS,8S)-3-Iodomethyl-8-(2-oxo-propyl)-hexahydro-pyrido[1,2-c][1,3]oxazin-1-one

methyl (2S,6S)-2-[(2S)-2,3-dihydroxypropyl]-6-prop-2-enylpiperidinecarboxylate

methyl (2S,6S)-2-[(2R)-2-hydroxypentyl]-6-prop-2-enylpiperidinecarboxylate

(4aS,8S)-8-(2,3-Dihydroxy-propyl)-3-iodomethyl-hexahydro-pyrido[1,2-c][1,3]oxazin-1-one

(2R,6R)-1-benzyl-2,6-bis(3-hydroxypropyl)piperidine