New chemical constituents of roots of Urtica triangularis HAND-MASS.
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.
Yan
Xing-Guo
XG
College of Bioengineering, Dalian University, Dalian Development Zone, Dalian, China.
Jia
Jing-Ming
JM
Tang
Ling
L
Shi
Li-Ying
LY
Wang
Yong-Qi
YQ
Feng
Bao-Min
BM
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*
D007202:Indicators and Reagents