title: Two new insecticidal sesquiterpene polyol esters from Celastrus angulatus.
abstract: Two new insecticidal sesquiterpene polyol esters with a beta-dihydroagarofuran sesquiterpene skeleton, celangulatin A (1), B (2), and two known compounds, celangulin IV (3) and V (4), were isolated from the leaves of Celastrus angulatus by bioassay-guided fractionation. Their chemical structures were elucidated mainly by analyses of the NMR and MS spectral data. Their insecticidal activities against Mythimna separate were demonstrated with the KD50 value of 68.5 and 215.8 microg g(-1), respectively.
authors.affiliation: Department of Applied Chemistry, China Agricultural University, Beijing 100094, People's Republic of China. mwang@unmc.edu
authors.forename: Wang
authors.initials: W
authors.lastname: Mingan
authors.forename: Wu
authors.initials: W
authors.lastname: Wenjun
authors.forename: Zhu
authors.initials: Z
authors.lastname: Jingbo
authors.forename: Ji
authors.initials: J
authors.lastname: Zhiqing
authors.forename: Zhou
authors.initials: Z
authors.lastname: Wenming
mesh_terms: D000818:Animals; D031247:Celastrus / Q000737:chemistry*; D004952:Esters / Q000737:chemistry / Q000302:isolation & purification*; D007313:Insecta / Q000254:growth & development; D007306:Insecticides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018515:Plant Leaves / Q000737:chemistry; D011108:Polymers / Q000737:chemistry / Q000302:isolation & purification; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D004952:Esters; D007306:Insecticides; D011108:Polymers; D012717:Sesquiterpenes; C024617:polyol