title: Isoprenylated xanthones and flavonoids from Cudrania tricuspidata.
abstract: Further phytochemical investigation on the roots of Cudrania tricuspidata afforded a new isoprenylated xanthone, cudratricusxanthone I (1), two new isoprenylated flavanones, cudraflavanones C and D (2 and 3, resp.), and seven known compounds, 1,7-dihydroxy-3,6-dimethoxyxanthone (4), macluraxanthone C (5), cudraxanthones E, K, and L (6, 7, and 8, resp.), cudraflavanone A (9), and cudraflavone C (10). Their structures were identified by spectroscopic methods. Cudratricusxanthone H (12), macluraxanthone B (13), two xanthones previously isolated from this plant, and 5, showed significant inhibitory effects on four kinds of human digestive apparatus tumor cell lines (HCT-116, SMMC-7721, SGC-7901, and BGC-823) with IC50 values of 2.70-12.66 microM.
authors.affiliation: Department of Pharmacognosy, School of Pharmacy, Fudan University, 138 Yi Xue Yuan Road, Shanghai 200032, People's Republic of China.
authors.forename: Ying-Shu
authors.initials: YS
authors.lastname: Zou
authors.forename: Ai-Jun
authors.initials: AJ
authors.lastname: Hou
authors.forename: Guo-Fu
authors.initials: GF
authors.lastname: Zhu
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000494:pharmacology; D045744:Cell Line, Tumor; D005419:Flavonoids / Q000737:chemistry*; D006801:Humans; D020128:Inhibitory Concentration 50; D015394:Molecular Structure; D029586:Moraceae / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry; D044004:Xanthones / Q000737:chemistry*
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D005419:Flavonoids; D044004:Xanthones