title: New chemical constituents of roots of Urtica triangularis HAND-MASS.
abstract: Studies on the chemical constituents of roots of Urtica triangularis HAND-MASS have led to the isolation of four new compounds. The structures, including the absolute configurations, of these constituents have been elucidated through spectral studies including (1)H-NMR, (13)C-NMR, 2D-NMR experiments (heteronuclear single-quantum coherence, heteronuclear multiple bonding connectivity and nuclear Overhauser effect spectroscopy), high resolution mass spectroscopy (HR-MS) and circular dichroism as (-)-4-methoxy-8'-acetyl olivil, (-)-4-methoxy-8'-acetyl olivil-4-O-alpha-arabinopyronosyl-(1-->6)-beta-glucopyranoside, (-)-olivil-9-O-beta-glucopyranoside and cyclo-olivil-9-O-beta-glucopyranoside.
authors.affiliation: College of Bioengineering, Dalian University, Dalian Development Zone, Dalian, China.
authors.forename: Xing-Guo
authors.initials: XG
authors.lastname: Yan
authors.forename: Jing-Ming
authors.initials: JM
authors.lastname: Jia
authors.forename: Ling
authors.initials: L
authors.lastname: Tang
authors.forename: Li-Ying
authors.initials: LY
authors.lastname: Shi
authors.forename: Yong-Qi
authors.initials: YQ
authors.lastname: Wang
authors.forename: Bao-Min
authors.initials: BM
authors.lastname: Feng
mesh_terms: D002942:Circular Dichroism; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008968:Molecular Conformation; D018517:Plant Roots / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization; D027003:Urticaceae / Q000737:chemistry*
chemical_list: D007202:Indicators and Reagents