6-Hydroxy-3,6,9-trimethyl-2-oxo-2,3,3a,5,6,9b-hexahydro-4H-furo[3′,4′:6,7]cyclohepta[1,2-b]furan-4-yl (2E)-2-methyl-2-butenoate

(2E)-2-Méthyl-2-buténoate de 6-hydroxy-3,6,9-triméthyl-2-oxo-2,3,3a,5,6,9b-hexahydro-4H-furo[3′,4′:6,7]cyclohepta[1,2-b]furan-4-yle

2-Butenoic acid, 2-methyl-, 2,3,3a,5,6,9b-hexahydro-6-hydroxy-3,6,9-trimethyl-2-oxo-4H-cyclohepta[1,2-b:6,7-c′]difuran-4-yl ester, (2E)-

6-Hydroxy-3,6,9-trimethyl-2-oxo-2,3,3a,5,6,9b-hexahydro-4H-furo[3′,4′:6,7]cyclohepta[1,2-b]furan-4-yl (2E)-2-methyl-2-butenoate

6-Hydroxy-3,6,9-trimethyl-2-oxo-2,3,3a,5,6,9b-hexahydro-4H-furo[3′,4′:6,7]cyclohepta[1,2-b]furan-4-yl-(2E)-2-methyl-2-butenoat

8-Angeloylegelolide

8a-Angeloyloxy-3-oxaartabsin