(1S,2R)-2-[1-(tert-butyl)-1,1-dimethylsilyl]oxy-1-methyl-3-butenyl (4R,5S)-5-(benzyloxy)-4-[1-(tert-butyl)-1,1-dimethylsilyl]oxyhexanoate

(1S,2R)-2-[1-(tert-butyl)-1,1-dimethylsilyl]oxy-1-methyl-3-butenyl (4R,5S)-4-[1-(tert-butyl)-1,1-dimethylsilyl]oxy-5-hydroxyhexanoate

(1R)-3-((1S,2R)-2-[1-(tert-butyl)-1,1-dimethylsilyl]oxy-5-[((1S,2R)-2-[1-(tert-butyl)-1,1-dimethylsilyl]oxy-1-methyl-3-butenyl)oxy]-1-methyl-5-oxopentyloxy)-1-methyl-3-oxopropyl acrylate

(1R)-3-[((1S,2R)-2-hydroxy-5-[(1S,2R)-2-hydroxy-1-methyl-3-butenyl]oxy-1-methyl-5-oxopentyl)oxy]-1-methyl-3-oxopropyl acrylate

(1S,2R)-2-[1-(tert-butyl)-1,1-dimethylsilyl]oxy-1-methyl-3-butenyl (E,5S)-5-[(4-methoxybenzyl)oxy]-2-hexenoate