Acetic acid (Z)-(S)-3-{(2R,3R,5S,6S)-6-[(2E,4E)-5-((3S,4S,5S,7S)-7-iodomethyl-4-triethylsilanyloxy-1,6-dioxa-spiro[2.5]oct-5-yl)-3-methyl-penta-2,4-dienyl]-2,5-dimethyl-tetrahydro-pyran-3-ylcarbamoyl}-1-methyl-allyl ester

N-{(2R,3R,5S,6S)-6-[(2E,4E)-5-((3R,4R,5R,7R)-7-Iodomethyl-4-triethylsilanyloxy-1,6-dioxa-spiro[2.5]oct-5-yl)-3-methyl-penta-2,4-dienyl]-2,5-dimethyl-tetrahydro-pyran-3-yl}-acetamide

Acetic acid (Z)-(S)-3-{(2R,3R,5S,6S)-2,5-dimethyl-6-[(2E,4E)-3-methyl-5-((3R,4R,5R,7S)-7-methyl-4-triethylsilanyloxy-1,6-dioxa-spiro[2.5]oct-5-yl)-penta-2,4-dienyl]-tetrahydro-pyran-3-ylcarbamoyl}-1-methyl-allyl ester

Acetic acid (Z)-(S)-3-{(2R,3R,5S,6S)-6-[(2E,4E)-5-((4S,5R,7R)-7-iodomethyl-4-triethylsilanyloxy-6-oxa-spiro[2.5]oct-5-yl)-3-methyl-penta-2,4-dienyl]-2,5-dimethyl-tetrahydro-pyran-3-ylcarbamoyl}-1-methyl-allyl ester