(R)-3-(tert-butoxycarbonylamino)-4-(tritylthio)but-1-en-2-yl trifluoromethanesulfonate

(R)-tert-butyl (1-(tritylthio)but-3-en-2-yl)carbamate

(R)-3-((3S,5S)-6-(tert-butyldiphenylsilyloxy)-3,5-dimethylhexanoyl)-4-phenyloxazolidin-2-one

(R)-N-((3S,5S)-3,5-Dimethyl-6-oxo-hexyl)-2,N-dimethyl-butyramide

(2R)-N-methyl-N-((3S,5S)-3,5-dimethyl-6-hydroxy-hex-1-yl)-2-methylbutyramide