ethyl (2E,4E,6E,8S,9S)-9-((tert-butyldimethylsilyl)oxy)-6,8-dimethyl-11-oxoundeca-2,4,6-trienoate

ethyl (2Z,5S,6S,7E,9Z)-5-((tert-butyldimethylsilyl)oxy)-10-iodo-6,8-dimethyldeca-2,7,9-trienoate

ethyl (2E,4E,6E,8S,9S)-9-((tert-butyldimethylsilyl)oxy)-11-hydroxy-6,8-dimethylundeca-2,4,6-trienoate

methyl (2E,5S,6S,7E,9Z)-5-((tert-butyldimethylsilyl)oxy)-10-iodo-2-methoxy-6,8-dimethyldeca-2,7,9-trienoate

1-ethyl 13-methyl (2E,4E,6E,8S,9S,11E)-9-((tert-butyldimethylsilyl)oxy)-12-methoxy-6,8-dimethyltrideca-2,4,6,11-tetraenedioate