(4E,6E)-(2R,3S)-8-((2R,3S,6S,8S,9R)-8-Ethynyl-3,9-dimethyl-1,7-dioxa-spiro[5.5]undec-2-yl)-3-hydroxy-1-((S)-4-isopropyl-2-thioxo-oxazolidin-3-yl)-2,6-dimethyl-octa-4,6-dien-1-one

(2E,4E)-6-((2R,3S,6S,8S,9R)-8-Ethynyl-3,9-dimethyl-1,7-dioxa-spiro[5.5]undec-2-yl)-4-methyl-hexa-2,4-dienal

((2S,6R)-6-{(R)-4-Hydroxy-5-[(2R,3S,6R,8R,9S)-9-methoxy-8-(4-methoxy-benzyloxymethyl)-3-methyl-1,7-dioxa-spiro[5.5]undec-4-en-2-yl]-2-oxo-pentyl}-tetrahydro-pyran-2-yl)-acetic acid methyl ester

((2S,6R)-6-{(2S,4S)-2,4-Dihydroxy-5-[(2R,3S,6R,8R,9S)-9-methoxy-8-(4-methoxy-benzyloxymethyl)-3-methyl-1,7-dioxa-spiro[5.5]undec-4-en-2-yl]-pentyl}-tetrahydro-pyran-2-yl)-acetic acid methyl ester

tert-Butyl-[2-((2R,3S,6S,8S,9R)-8-ethynyl-3,9-dimethyl-1,7-dioxa-spiro[5.5]undec-2-yl)-ethoxy]-dimethyl-silane