ethyl (2E,6S,7S)-8-tert-butyldimethylsiloxy-2,6-dimethyl-7-[(phenoxythiocarbonyl)oxy]-2-octenoate

(2S,3S)-(+)-erythro-3-methylbutane-1,2,4-triol 1,2-acetonide

ethyl (4S,5S)-5,6-isopropylidene-4-methylhexanoate

(1S,2R,3S)-2-(tert-butyldimethylsiloxymethyl)-1-[(1S)-1-(ethoxycarbonyl)ethyl]-3-methylcyclopentane

ethyl (4S,5S,2E)-5,6-isopropylidene-4-methylhexanoate