title: Complete assignments of 1H and 13C NMR data for rings A,B-seco limonoids from the seed of Aphanamixis polystachya.
abstract: Seven rings A,B-seco limonoids 1-7 were isolated from the EtOH extract of the seed of Aphanamixis polystachya. Their structures were identified as rohituka-7 (1), dregeana-1 (2), rohituka-15 (3), Tr-B (4), rohituka-3 (5), rohituka-5 (6), and rohituka-14 (7) by MS and NMR spectroscopy. The complete assignment of proton and carbon signals was achieved by 1D and 2D NMR experiments including DEPT, HSQC, 1H--1H COSY, HMBC, and NOESY.
authors.affiliation: Department of Food Science and Human Nutrition, Clemson University, Clemson, SC 29634, USA. huapinz@Clemson.edu
authors.forename: Huaping
authors.initials: H
authors.lastname: Zhang
authors.forename: Feng
authors.initials: F
authors.lastname: Chen
authors.forename: Xi
authors.initials: X
authors.lastname: Wang
authors.forename: Dagang
authors.initials: D
authors.lastname: Wu
authors.forename: Qing
authors.initials: Q
authors.lastname: Chen
mesh_terms: D002247:Carbon Isotopes; D006859:Hydrogen; D036701:Limonins / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D029582:Meliaceae / Q000737:chemistry*; D015394:Molecular Structure; D012639:Seeds / Q000737:chemistry
chemical_list: D002247:Carbon Isotopes; D036701:Limonins; D006859:Hydrogen