(2R,3S)-N-tert-butyloxycarboryl-3-isobutylisoserine benzyl ester

(2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-acetoxy-9,11-dihydroxy-6-((methoxycarbonyl)oxy)-4a,8,13,13-tetramethyl-5-oxo-4-((triethylsilyl)oxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate

(4S,5R)-3-(tert-butoxycarbonyl)-4-isobutyl-2-(4-methoxyphenyl)oxazolidine-5-carboxylic acid