Irregular linear sesquiterpene dilactones from Anthemis auriculata Boiss.
Seven new irregular linear sesquiterpene lactones, epi-antheindurolide A (1), epi-antheindurolide A-5,6-oxide (2), 5-hydroxy-5,6-dihydro-6,13-dehydro-epi-antheinduro lide A (3), 5-hydroperoxy-5,6-dihydro-6,13-dehydro-epi-antheindurolide A (4), epi-antheindurolide B (5), 6-hydroxy-5,6-dihydro-4,5-dehydro-epi-antheindurolide A (6) and 6-hydroperoxy-5,6-dihydro-4,5-dehydro-epi-antheindurolide A (7), were isolated from the flowers of Anthemis auriculata Bioss. Their structures were established by spectroscopic techniques. The discussed compounds were found to be stereoisomers of recently reported lactones for A. arvensis.
Todorova
Milka
M
Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria. todorova@orgchm.bas.bg
Staneva
Jordanka
J
Denkova
Pavleta
P
Evstatieva
Ljuba
L
D031166:Anthemis / Q000737:chemistry*; D035264:Flowers / Q000737:chemistry; D007783:Lactones / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D012717:Sesquiterpenes / Q000737:chemistry*; D013237:Stereoisomerism
D007783:Lactones; D012717:Sesquiterpenes; C534120:epi-antheindurolide A