Structural elucidation of four new furostanol saponins from Tupistra chinensis by 1D and 2D NMR spectroscopy.
Four new furostanol saponins (1-4), two pairs of diastereoisomers, were isolated from methanolic extracts of Tupistra chinensis rhizomes and their structures were assigned from (1)H and (13)C NMR spectra, DEPT, and by 2D COSY, NOESY, HMQC, and HMBC experiments.
Zou
Kun
K
Hubei Key Laboratory of Natural Products Research and Development, College of Chemistry and Life Science, China Three Gorges University, Yichang 443002, PR China. kzou@ctgu.edu.cn
Wang
Jun-zhi
JZ
Guo
Zhi-yong
ZY
Du
Ming
M
Wu
Jun
J
Zhou
Yuan
Y
Dan
Fei-jun
FJ
Liu
Chuang
C
D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D019684:Magnoliopsida / Q000737:chemistry; D000432:Methanol; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry; D012503:Saponins / Q000737:chemistry*; D013237:Stereoisomerism; D013261:Sterols / Q000737:chemistry*
D010936:Plant Extracts; D012503:Saponins; D013261:Sterols; C521858:furostanol saponin I; D000432:Methanol