NMR spectral assignments of isoprenylated flavanones from Sophora tonkinensis.
The phytochemical investigation of extracts from the roots of Sophora tonkinensis yielded three new isoprenylated flavanones, the tonkinochromanes F (2), G (3), and H (5), along with four known compounds. Structural elucidation of the compounds were established on the basis of spectral data, particularly by the use of 1D NMR and several 2D shift-correlated NMR pulse sequences ((1)H-(1)H COSY, HSQC, HMBC, and ROESY).
Li
Xing-Nuo
XN
School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, PR China.
Lu
Zhi-Qiang
ZQ
Chen
Guang-Tong
GT
Yan
Hai-Xia
HX
Sha
Na
N
Guan
Shu-Hong
SH
Yang
Min
M
Hua
Hui-Ming
HM
Wu
Li-Jun
LJ
Guo
De-An
DA
D002247:Carbon Isotopes; D044950:Flavanones / Q000737:chemistry* / Q000302:isolation & purification; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000592:standards*; D008968:Molecular Conformation; D018517:Plant Roots / Q000737:chemistry; D011522:Protons; D012015:Reference Standards; D029909:Sophora / Q000737:chemistry*; D013237:Stereoisomerism
D002247:Carbon Isotopes; D044950:Flavanones; D005419:Flavonoids; D011522:Protons; C461819:sophoranone