(3R,4S,6S)-3,4,6-trimethyl-8-((R)-2-methylbutanamido)-N-((R)-1-(tritylthio)but-3-en-2-yl)octanamide

(3R,4S,6S)-8-((R)-N,2-dimethylbutanamido)-3,4,6-trimethyl-N-((R)-1-(tritylthio)but-3-en-2-yl)octanamide

(3R,4S,6S)-8-((R)-N,2-dimethylbutanamido)-3,4,6-trimethyl-N-((S)-1-(tritylthio)but-3-en-2-yl)octanamide

(3S,4S,6S)-8-((R)-N,2-dimethylbutanamido)-3,4,6-trimethyl-N-((R)-1-(tritylthio)but-3-en-2-yl)octanamide

(R)-N-((3S,5S)-6-hydroxy-3,5-dimethylhexyl)-2-methylbutanamide