ISOLASI DAN ELUSIDASI STRUKTUR TRITERPENOID KULIT BATANG SURIAN Toona sinensis DAN UJI TERHADAP HAMA Crosidolomia pavonana
TryterpenoidÂ compoundÂ (3-hydroxyeupha-7-ene)Â wereÂ isolatedÂ fromÂ hexaneÂ fractionÂ theÂ steamÂ barkÂ ofÂ ToonaÂ sinensisÂ (Meliaceae).Â TheÂ structuresÂ ofÂ theseÂ compoundsÂ wereÂ establishedÂ baseÂ onÂ spectroscopicÂ evidence,Â includingÂ UV,Â IR,Â 3C-NMR,Â 1H-NMR,Â HMBC,Â HMQCÂ andÂ COSYÂ spectraÂ andÂ literatureÂ surveyÂ thisÂ isÂ newÂ compoundÂ inÂ familyÂ Meliaceae.Â InsectÂ activityÂ ofÂ theÂ hexaneÂ fractionÂ (1.0%)Â andÂ againstÂ CrosidolomiaÂ pavonanaÂ wereÂ tested.Â TheÂ activityÂ ofÂ hexaneÂ wereÂ mortalityÂ (37.5%),Â antifeedingÂ (75.5%).Â TheÂ activityÂ ofÂ theÂ 3-hydroxyeupha-7-eneÂ showedÂ mortalityÂ (52.0%),Â Lc50;Â 0.39847Â andÂ Lt50;Â 5.53931.
Keywords:Â ToonaÂ sinensisÂ (Meliaceae),Â 3-hydroxyeupha-7-ene,Â CrosidolomiaÂ pavonana,Â Antifeeding,Â MortalityÂ Lc50Â andÂ Lt50
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