title: New limonoids from the seeds of a Krishna mangrove, Xylocarpus granatum.
abstract: Two new mexicanolides, named granatumins H and I (1 and 2, resp.), and two phragmalins, named granatumins J and K (3 and 4, resp.), were isolated from the seeds of an Indian mangrove, Xylocarpus moluccensis, collected from the swamps of Krishna estuary, Andhra Pradesh. The structures of these limonoids were established on the basis of spectroscopic data. Granatumin J (3) is a highly oxidized phragmalin with five AcO groups, whereas granatumin K (4) is the first phragmalin found in nature with conjugated C(8)C(30) and C(14)C(15) bonds.
authors.affiliation: College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, P. R. China.
authors.forename: Hongliang
authors.initials: H
authors.lastname: Chen
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.forename: Min-Yi
authors.initials: MY
authors.lastname: Li
authors.forename: Tirumani
authors.initials: T
authors.lastname: Satyanandamurty
authors.forename: Jun
authors.initials: J
authors.lastname: Wu
mesh_terms: D036701:Limonins / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D029582:Meliaceae / Q000737:chemistry*; D008968:Molecular Conformation; D012639:Seeds / Q000737:chemistry
chemical_list: D036701:Limonins; C583756:granatumin H; C583757:granatumin I