Collection of Czechoslovak Chemical Communications · 1986 · 13 citations · 0 references
Dittrichia ViscosaBioorganic ChemistryBiochemistryDeterrent ActivityNatural SciencesSecondary MetabolitePhytochemicalX-ray Structural AnalysisCorn StoresPhytochemistryPharmacologyEarlier Described Inuviscolide
In addition to the earlier described inuviscolide ( II ), the sesquiterpenic vachanic ( V ) and 2α-hydroxyisocostic ( VII ) acids, as well as carabron ( VIII ) and the so far undescribed sesquiterpenic lactone 11αH,13-dihydroconfertin were also isolated from Dittrichia viscosa (L.) GREUTER. For the last mentioned lactone the structure IX has been derived. The structure of vachanic acid ( V ) was confirmed by X-ray structural analysis. Compounds V to VII were tested for their deterrent (antifeedant) activity against selected insect pests living in corn stores, and they generally had a high activity.