(4S,6R)-6-[(ethenesulfonyl)oxy]nona-1,8-dien-4-yl (E)-but-2-enoate

(S)-6-{[(R)-2,2-dioxo-5,6-dihydro-1,2-oxathiin-6-yl]methyl}-5,6-dihydro-2H-pyran-2-one

(4R,6R)-4-(dimethylphenylsilyl)-6-{[(6S)-4-(dimethylphenylsilyl)-2,2-dioxo-1,2-oxathian-6-yl]methyl}-3,4,5,6-tetrahydro-2H-pyran-2-one

(4R,6R)-4-(dimethylphenylsilyl)-6-[(R)-2-hydroxypent-4-en-1-yl]-3,4,5,6-tetrahydro-2H-pyran-2-one

(4S,6S)-4-{[(4R,4R)-4-(dimethylphenylsilyl)-6-oxo-3,4,5,6-tetrahydro-2H-pyran-2-yl]methyl}-6-(iodomethyl)-1,3-dioxan-2-one