Mexicanolides from the seeds of a Krishna mangrove, Xylocarpus moluccensis.
Two new mexicanolides, named xylomexicanolides A and B, were isolated from the seeds of an Indian mangrove, Xylocarpus moluccensis, together with four known limonoids, khayasin, angolensic acid methyl ester, khayasin T, and 2'S-methylbutanoylproceranolide. The structures of these limonoids were established on the basis of spectroscopic data. The (13)C-NMR data of khayasin were reported for the first time. Khayasin was found to exhibit marked insecticidal activity against the fifth instar larvae of Brontispa longissima (GESTRO) at a concentration of 10 mg/l.
Zhang
Jing
J
College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China. zhing0701@sina.com
Yang
Sheng-Xin
SX
Yang
Xiao-Bo
XB
Li
Min-Yi
MY
Feng
Gang
G
Pan
Jian-Yu
JY
Satyanandamurty
Tirumani
T
Wu
Jun
J
D000818:Animals; D001517:Coleoptera / Q000187:drug effects; D007306:Insecticides / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D007814:Larva / Q000187:drug effects; D036701:Limonins / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D029582:Meliaceae / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D012639:Seeds / Q000737:chemistry*
D007306:Insecticides; D036701:Limonins