(1R,5R,7R)-7-allyl-1-((R)-1-(tert-butyldiphenylsilyloxy)propan-2-yl)-6-oxaspiro[4.5]decan-10-one

(E)-ethyl 4-((1R,5S,7R)-1-((R)-1-(tert-butyldiphenylsilyloxy)propan-2-yl)-6-oxaspiro[4.5]decan-7-yl)-2-methylbut-2-enoate

ethyl (2E)-4-[(1R,5S,7R)-1-[(2R)-1-hydroxypropan-2-yl]-6-oxaspiro[4.5]decan-7-yl]-2-methylbut-2-enoate

ethyl (2E)-4-[(1R,5S,7R)-1-[(2S)-but-3-en-2-yl]-6-oxaspiro[4.5]decan-7-yl]-2-methylbut-2-enoate

tert-butyldiphenyl[(2R)-2-[(1R,5S,7S)-7-propyl-6-oxaspiro[4.5]decan-1-yl]propoxy]silane