Methanesulfonic acid (2S,3S,6S)-3-dimethylcarbamoylmethyl-6-methoxy-3,6-dihydro-2H-pyran-2-ylmethyl ester
(2S,4aR,8aS)-2-Methoxy-octahydro-pyrano[2,3-c]pyridine-7-carboxylic acid benzyl ester
(4aR,8aS)-4,4a,5,6,8,8a-Hexahydro-pyrano[2,3-c]pyridine-7-carboxylic acid benzyl ester
(2S,4aR,8aS)-2-Methoxy-hexahydro-pyrano[2,3-c]pyridin-6-one
(3S,4S)-3-Hydroxy-4-(2-hydroxy-ethyl)-piperidine-1-carboxylic acid benzyl ester