(5S,2E)-5-tetrahydropyranyloxy-2-hexenoic acid

(E)-(S)-5-[(S)-3-((E)-(S)-5-Hydroxy-hex-2-enoyloxy)-butyryloxy]-4-oxo-hex-2-enoic acid

(S)-3-(Tetrahydro-pyran-2-yloxy)-butyric acid (S)-1-furan-2-yl-ethyl ester

(E)-(S)-5-Hydroxy-hex-2-enoic acid (S)-2-((S)-1-furan-2-yl-ethoxycarbonyl)-1-methyl-ethyl ester

(E)-(S)-5-Hydroxy-hex-2-enoic acid (S)-1-methyl-2-((E)-(S)-1-methyl-2,5-dioxo-pent-3-enyloxycarbonyl)-ethyl ester