title: A new sesquiterpene isolated from Lindera aggregata (SIMS) KOSTERM.
abstract: A new sesquiterpene, neolindenenonelactone (1), was first isolated from the dried roots of Lindera aggregata (SIMS) KOSTERM., along with four known compounds, linderane (2), isolinderalactone (3), linderalactone (4), and 8-hydroxylindestenolide (5). Their chemical structures were elucidated using spectral analysis of fast atom bombardment mass spectroscopy, one-dimensional nuclear magnetic resonance spectroscopy and two-dimensional-nuclear magnetic resonance spectroscopy including (1)H-NMR, (13)C-NMR, distortionless enhancement by polarization transfer, heteronuclear multiple-bond coherence, and single-crystal X-ray diffraction techniques.
authors.affiliation: Department of Chinese Materia Medica and Natural Products, National Institute for the Control of Pharmaceutical and Biological Products, Beijing, PR China.
authors.forename: Xian-Long
authors.initials: XL
authors.lastname: Cheng
authors.forename: Shuang-Cheng
authors.initials: SC
authors.lastname: Ma
authors.forename: Feng
authors.initials: F
authors.lastname: Wei
authors.forename: Gang-Li
authors.initials: GL
authors.lastname: Wang
authors.forename: Xin-Yue
authors.initials: XY
authors.lastname: Xiao
authors.forename: Rui-Chao
authors.initials: RC
authors.lastname: Lin
mesh_terms: D018360:Crystallography, X-Ray; D027443:Lindera / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D018517:Plant Roots / Q000737:chemistry; D012717:Sesquiterpenes / Q000737:chemistry* / Q000302:isolation & purification; D021241:Spectrometry, Mass, Electrospray Ionization; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet