(2R,6S)-6-[(4S)-4-benzyloxy-3,3-dimethyl-2-oxohex-5-enyl]-2-[(tert-butyldiphenylsilyloxy)methyl]-4-methyl-4,1''-epoxytetrahydropyran

(3S,11R,6E)-3-benzyloxy-11-(tert-butyldimethylsilyloxy)-4,4-dimethyl-12-[(2-trimethylsilylethoxy)methoxy]-9-[(E)-trimethylsilylmethylidene]dodeca-1,6-dien-5-one

(2R,6R)-6-[(4S)-4-benzyloxy-3,3-dimethyl-2-oxohex-5-enyl]-2-[(tert-butyldiphenylsilyloxy)methyl]-4-methylidenetetrahydropyran