[8-bromo-2-(3,3-dibromo-allyl)-9-ethyl-2,3,4,7,8,9-hexahydro-oxonin-3-yloxy]-tert-butyl-dimethyl-silane

[2-(2-benzyloxy-ethyl)-8-bromo-9-ethyl-2,3,4,7,8,9-hexahydro-oxonin-3-yloxy]-tert-butyl-dimethyl-silane

(Z,2S,3R,8S,9S)-8-bromo-9-ethyl-3-hydroxy-2-((Z)-pent-2-en-4-ynyl)-2,3,4,7,8,9-hexahydrooxonine

3,5-bis-trifluoromethyl-benzenesulfonic acid 9-(2-benzyloxy-ethyl)-8-(tert-butyl-dimethyl-silanyloxy)-3-(4-methoxy-benzyloxy)-2,3,4,7,8,9-hexahydro-oxonin-2-ylmethyl ester