title: Three new insecticidal sesquiterpene polyol esters from Celastrus angulatus.
abstract: Three new insecticidal sesquiterpene polyol esters with dihydro-beta-agarofuran skeletons, Kupiteng esters A (1), B (2) and C (3), were isolated from the methanol extracts of the root bark of Celastrus angulatus and their structures elucidated by analyses of MS and NMR spectral data. The insecticidal activities of these compounds against the 4th instar larvae of Mythimna separata were evaluated. The KD50 values of compounds 1-3, were 260.2, 445.5 and 1260.0 microg x g(-1), respectively.
authors.affiliation: Institute of Pesticide Science, Northwest A&F University, Yangling, Shaanxi 712100, China.
authors.forename: Shaopeng
authors.initials: S
authors.lastname: Wei
authors.forename: Minchang
authors.initials: M
authors.lastname: Wang
authors.forename: Zhiqin
authors.initials: Z
authors.lastname: Ji
authors.forename: Baojun
authors.initials: B
authors.lastname: Shi
authors.forename: Shengkun
authors.initials: S
authors.lastname: Li
authors.forename: Jiwen
authors.initials: J
authors.lastname: Zhang
mesh_terms: D000818:Animals; D031247:Celastrus / Q000737:chemistry*; D002681:China; D007313:Insecta; D007306:Insecticides / Q000302:isolation & purification* / Q000633:toxicity*; D007814:Larva; D009682:Magnetic Resonance Spectroscopy; D024301:Plant Bark / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry / Q000633:toxicity; D018517:Plant Roots / Q000737:chemistry; D012717:Sesquiterpenes / Q000302:isolation & purification* / Q000633:toxicity*; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet
chemical_list: D007306:Insecticides; D010936:Plant Extracts; D012717:Sesquiterpenes; C549304:kupiteng ester A; C549305:kupiteng ester B; C549306:kupiteng ester C