(4aS,6S,8aR)-5-Benzyl-6-[(Z)-9-(2-ethyl-[1,3]dioxolan-2-yl)-non-2-enyl]-2,2-dimethyl-hexahydro-[1,3]dioxino[5,4-b]pyridine

(2S,3S,6R)-3-Benzyloxy-6-(2-hydroxy-ethyl)-2-methyl-piperidine-1-carboxylic acid methyl ester

(2S,3S,6S)-6-Methoxycarbonylmethyl-3-methoxymethoxy-2-methyl-piperidine-1-carboxylic acid methyl ester

(2S,3S,6R)-3-Benzyloxy-6-methoxycarbonylmethyl-2-methyl-piperidine-1-carboxylic acid methyl ester

Acetic acid (2S,3R)-2-acetoxymethyl-1-benzyl-6-oxo-piperidin-3-yl ester