(4R,5S)-3-((2R,3S,E)-3-hydroxy-2-methylhex-4-enoyl)-4-methyl-5-phenyloxazolidin-2-one

(4R,5S)-3-((2R,3S,E)-3-((tert-butyldimethylsilyl)oxy)-2-methylhex-4-enoyl)-4-methyl-5-phenyloxazolidin-2-one

(4R,5S)-4-((tert-butyldimethylsilyl)oxy)-5-methyl-6-((triethylsilyl)oxy)hexane-2,3-diol

allyl ((S,2E,4E)-6-(allyloxy)-1-((2R,5S,7R,8S)-2-butyl-8-methyl-7-((E)-3-methyl-4-oxobut-2-en-1-yl)-1,6-dioxaspiro[4.5]decan-2-yl)-4-methyl-6-oxohexa-2,4-dien-1-yl) succinate

allyl ((S,2E,4E)-6-(allyloxy)-1-((2R,5S,7R,8S)-2-butyl-7-((E)-4-hydroxy-3-methylbut-2-en-1-yl)-8-methyl-1,6-dioxaspiro[4.5]decan-2-yl)-4-methyl-6-oxohexa-2,4-dien-1-yl) succinate