title: A new insecticidal sesquiterpene ester from Celastrus angulatus.
abstract: A new sesquiterpene polyol ester with a beta-dihydroagarofuran skeleton, NW37 (1), and three known compounds NW13 (2), NW16 (3) and NW35 (4) were isolated by bioassay-guided fractionation from the highly polar MeOH extracts of the root bark of Celastrus angulatus. Their chemical structures were elucidated mainly by analyses of MS and NMR spectral data. The insecticidal activity of compound 1 against 4th instar Mythimna separata larvae with a KD(50) value of 252.3 microg g(-1) was demonstrated.
authors.affiliation: Institute of Pesticide Science, Northwest A&F University, Yangling, Shaanxi 712100, PR China. weishaopeng8888@yahoo.com.cn
authors.forename: Shao-peng
authors.initials: SP
authors.lastname: Wei
authors.forename: Zhi-qin
authors.initials: ZQ
authors.lastname: Ji
authors.forename: Ji-wen
authors.initials: JW
authors.lastname: Zhang
mesh_terms: D000818:Animals; D031247:Celastrus / Q000033:anatomy & histology / Q000737:chemistry*; D004365:Drugs, Chinese Herbal; D004952:Esters / Q000737:chemistry* / Q000494:pharmacology; D007313:Insecta / Q000187:drug effects; D007306:Insecticides / Q000737:chemistry* / Q000494:pharmacology; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D024301:Plant Bark / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry* / Q000494:pharmacology; D018517:Plant Roots / Q000737:chemistry; D012717:Sesquiterpenes / Q000737:chemistry* / Q000494:pharmacology
chemical_list: D004365:Drugs, Chinese Herbal; D004952:Esters; D007306:Insecticides; D010936:Plant Extracts; D012717:Sesquiterpenes