(2S)-N-(cyanomethyl)-2-<(R)-1-(dimethoxymethyl)-1-hydroxyethyl>pyrrolidine

(7S,8R,8aS)-8-(benzyloxy)-7-hydroxy-8-methyl-6-(E)-<(2R)-2-methylpentylidene>octahydroindolizidine

[(S)-2-((1R,2R)-1-Benzyloxy-2-hydroxy-1-methyl-oct-3-ynyl)-pyrrolidin-1-yl]-acetonitrile

(1R,7aS)-1-Methyl-3-oxo-tetrahydro-pyrrolo[1,2-c]oxazole-1-carbaldehyde

(1R,7aS)-1-Dimethoxymethyl-1-methyl-tetrahydro-pyrrolo[1,2-c]oxazole