Structure elucidation and NMR spectral assignment of five new xanthones from the bark of Garcinia xanthochymus.
Five new xanthones, namely Garcinexanthones A-E (1-5), were isolated from the barks of Garcinia xanthochymus. Their structures were elucidated by spectral analysis, primarily NMR, MS, and UV. The complete assignments of the (1)H NMR and (13)C NMR chemical shifts for the compounds were achieved by using 1D and 2D NMR techniques, including DEPT, HSQC, and HMBC NMR experiments.
Chen
Yu
Y
Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, Central China Normal University, 152 Luoyu Road, Wuhan 430079, PR China.
Zhong
Fangfang
F
He
Hongwu
H
Hu
Yun
Y
Zhu
Dan
D
Yang
Guangzhong
G
D029760:Garcinia / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D013058:Mass Spectrometry; D015394:Molecular Structure; D024301:Plant Bark / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D044004:Xanthones / Q000737:chemistry*
D044004:Xanthones