title: Xanthones from the stems of Cratoxylum cochinchinense.
abstract: Four new xanthones, 1-methoxy-3,7,8-trihydroxyxanthone (1), 1-methoxy-4,7,8-trihydroxyxanthone (2), 1-methoxy-4,7-dihydroxyxanthone (3), and 1,4-dimethoxy-2,7-dihydroxyxanthone (4) were isolated from the stems of Cratoxylum cochinchinense along with four known xanthones (5-8). The structures of new compounds were determined by extensive spectroscopic analyses, mainly 1D and 2D NMR and HRESIMS data.
authors.affiliation: Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, 510632, China.
authors.forename: Yinghui
authors.initials: Y
authors.lastname: Duan
authors.forename: Yi
authors.initials: Y
authors.lastname: Dai
authors.forename: Liuyuan
authors.initials: L
authors.lastname: Chen
authors.forename: Mingli
authors.initials: M
authors.lastname: Liu
authors.forename: Yaolan
authors.initials: Y
authors.lastname: Li
authors.forename: Xinsheng
authors.initials: X
authors.lastname: Yao
mesh_terms: D028084:Clusiaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D018547:Plant Stems / Q000737:chemistry*; D011522:Protons; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D011522:Protons; D044004:Xanthones