Complete assignments of 1H and 13C NMR data for rings A,B-seco limonoids from the seed of Aphanamixis polystachya.
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.
Zhang
Huaping
H
Department of Food Science and Human Nutrition, Clemson University, Clemson, SC 29634, USA. huapinz@Clemson.edu
Chen
Feng
F
Wang
Xi
X
Wu
Dagang
D
Chen
Qing
Q
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
D002247:Carbon Isotopes; D036701:Limonins; D006859:Hydrogen