(3R,6S)-Hydroxymethyl-2,5-dimethoxy-3,6-dimethyl-3,6-dihydropyrazin

(+)-(2S)-N-(3'-Hydroxypropyl)-3-hydroxy-2-methyl-2-[(4S)-2-oxo-4-phenyl-1,3-oxazolidin-3-yl]propionamide

(1R,4S,7R,8S)-1,4,11,11-tetramethyl-4-(hydroxymethyl)-6-oxa-3-aza-tricyclo[6.2.1.02,7]undec-2-en-5-one

(2R,4S)-methyl 2-tert-butyl-3-formyl-4-methyloxazolidine-4-carboxylate

(S)-2-azido-3-hydroxy-2-methylpropanoic acid