12,13-bismethylene-12,13-secoepothilone

(4S,7R,8S,9S,16S)-4,8-bis-(tert-butyldimethylsilanyloxy)-5,5,7,9-tetramethyl-16-[(E)-1-methyl-2-(2-methyl-1,3-thiazol-4-yl)-1-vinyl]-(13Z)-1-oxacyclohexadec-13-ene-2,6-dione

(S)-5-((tert-butyldimethylsilyl)oxy)-4,4-dimethyl-7-((triethylsilyl)oxy)heptan-3-one

(1S)-1-[(E)-1-Methyl-2-(2-methyl-1,3-thiazol-4-yl)-1-ethenyl]-3-butenyl (3S,6R,7S,8S)-3,7-di-[tert-butyldimethylsilyloxy]-4,4,6,8-tetramethyl-5-oxo-12-tridecenoate