title: Kavalactones from Piper methysticum, and their 13C NMR spectroscopic analyses.
abstract: The kavalactone, 11-methoxy-5,6-dihydroyangonin, and eight previously reported analogs along with four other aromatic compounds were isolated from the root extracts of Piper methysticum (Kava Kava). Their structural elucidations were made by 1H and 13C NMR spectroscopic assignments using COSY, HMBC and HMQC experiments.
authors.affiliation: National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, University of Mississippi, University, MS 38677, USA.
authors.forename: H Ranjith W
authors.initials: HR
authors.lastname: Dharmaratne
authors.forename: N P Dhammika
authors.initials: NP
authors.lastname: Nanayakkara
authors.forename: Ikhlas A
authors.initials: IA
authors.lastname: Khan
mesh_terms: D002247:Carbon Isotopes; D020901:Kava / Q000737:chemistry*; D007783:Lactones / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry
chemical_list: D002247:Carbon Isotopes; D007783:Lactones