title: Antiviral flavonoid-type C-glycosides from the flowers of Trollius chinensis.
abstract: Two new flavonoid-type C-glycosides, trollisin I (= (1S)-1,5-anhydro-1-[2-(3,4-dihydroxyphenyl)-5-hydroxy-7-methoxy-4-oxo-4H-[1]benzopyran-8-yl]-2-O-(2-methylbutanoyl)-D-glucitol; 1) and its 2-O-benzoyl congener trollisin II (2), were isolated from Trollius chinensis Bunge, together with the two known compounds 2''-O-(2'''-methylbutanoyl)isoswertisin (3) and vitexin galactoside (4). All compounds were identified by HR-ESI-MS and in-depth NMR-spectroscopic analyses. In antiviral assays, compound 3 was found to be moderately active towards influenza virus A.
authors.affiliation: The State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100083, PR China. sqcai@bjmu.edu.cn
authors.forename: Shao-Qing
authors.initials: SQ
authors.lastname: Cai
authors.forename: Rufeng
authors.initials: R
authors.lastname: Wang
authors.forename: Xiuwei
authors.initials: X
authors.lastname: Yang
authors.forename: Mingying
authors.initials: M
authors.lastname: Shang
authors.forename: Chaomei
authors.initials: C
authors.lastname: Ma
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Shoyama
mesh_terms: D000818:Animals; D000998:Antiviral Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D002460:Cell Line; D004285:Dogs; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D035264:Flowers; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D008826:Microbial Sensitivity Tests; D010946:Plants, Medicinal
chemical_list: D000998:Antiviral Agents; D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D006027:Glycosides