(4S)-isobutyl-(5S)-(2-methoxycarbonyl-1-methyl-5-oxo-pyrrolidin-3-yl)-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester

(4S,5S)-5-[(2R,3R)-2-((S)-1-Butylcarbamoyl-2-methyl-propylcarbamoyl)-1-methyl-5-oxo-pyrrolidin-3-yl]-4-isobutyl-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester

(4S,5S)-5-[(2S,3S)-2-((S)-1-Butylcarbamoyl-2-methyl-propylcarbamoyl)-1-methyl-5-oxo-pyrrolidin-3-yl]-4-isobutyl-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester

(5R)-formyl-(4S)-isobutyl-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester