tert-butyl-{(4E)(1S,2S)-2-(4-methoxy-benzyloxy)-1-[(1E)-2-((2S)-4-methyl-3,6-dihydro-2H-pyran-2-yl)-vinyl]-6-trityloxy-hex-4-enyloxy}dimethylsilane

(E)-(1R,7S,11S,15R,17R)-11-(tert-Butyl-dimethyl-silanyloxy)-7-[(E)-(S)-1-(tert-butyl-dimethyl-silanyloxy)-3-((S)-4-methyl-3,6-dihydro-2H-pyran-2-yl)-allyl]-15-methyl-6,21-dioxa-bicyclo[15.3.1]henicosa-9,19-dien-3-yne-5,13-dione

(Z)-4-[(2R,6S)-6-((E)-4-Oxo-pent-2-enyl)-5,6-dihydro-2H-pyran-2-yl]-but-2-enoic acid methyl ester

acetic acid 4-methyl-2-methylene-5-[6-(2-oxo-ethyl)-3,6-dihydro-2H-pyran-2-yl]-pentyl ester

acetic acid 5-[6-(2-hydroxy-ethyl)-3,6-dihydro-2H-pyran-2-yl]-4-methyl-2-methylene-pentyl ester