Two new insecticidal sesquiterpene polyol esters from Celastrus angulatus.
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.
Mingan
Wang
W
Department of Applied Chemistry, China Agricultural University, Beijing 100094, People's Republic of China. mwang@unmc.edu
Wenjun
Wu
W
Jingbo
Zhu
Z
Zhiqing
Ji
J
Wenming
Zhou
Z
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
D004952:Esters; D007306:Insecticides; D011108:Polymers; D012717:Sesquiterpenes; C024617:polyol