(-)-(2S,5S,6R)-7-(benzyloxy)-5-(tert-butyldimethylsilyloxy)-2,6-dimethylheptan-1-ol

ethyl (+)-(4S,7S,8R,E)-9-(benzyloxy)-7-(tert-butyldimethylsilyloxy)-2,4,8-trimethylnon-2-enoate

ethyl (-)-(4S,7S,8R,E)-9-(benzyloxy)-7-hydroxy-2,4,8-trimethylnon-2-enoate

ethyl (+)-(S)-2-{(2S,3S,6S)-6-[(R)-1-(benzyloxy)propan-2-yl]-3-methyltetrahydro-2H-pyran-2-yl}-2-iodopropanoate

ethyl (+)-(R)-2-{(2S,3S,6S)-6-[(R)-1-(benzyloxy)propan-2-yl]-3-methyltetrahydro-2H-pyran-2-yl}propanoate