(E)-(7S,9R,10S)-7-Allyl-4,9-bis-(tert-butyl-dimethyl-silanyloxy)-10-methyl-7,8,9,10,11,14-hexahydro-6-oxa-benzocyclododecen-5-one

(E)-(7S,9R,10S)-7-Allyl-9-(tert-butyl-diphenyl-silanyloxy)-10-methyl-4-triisopropylsilanyloxy-7,8,9,10,11,14-hexahydro-6-oxa-benzocyclododecen-5-one

(E)-(7S,9R,10S)-9-(tert-Butyl-diphenyl-silanyloxy)-7-(3-hydroxy-propyl)-10-methyl-4-triisopropylsilanyloxy-7,8,9,10,11,14-hexahydro-6-oxa-benzocyclododecen-5-one