title: Isoflavonoids from the roots of Campylotropis hirtella.
abstract: From the dried roots of Campylotropis hirtella (Franch.) Schindl., five novel isoflavonoids, 3( S)-7,2',4'-trihydroxy-5,5'-dimethoxy-6-(3-methylbut-2-enyl)-isoflavan ( 1), 3( S)-2',4'-dihydroxy-5,5'-dimethoxy-(6'',6''-dimethylpyrano)-(2'',3'':7,6)-isoflavan ( 2), 3( R)-5,4'-dihydroxy-2'-methoxy-3'-(3-methylbut-2-enyl)-(6'',6''-dimethylpyrano)-(7,6 : 2'',3'')-isoflavanone ( 3), 3( R)-5,4'-dihydroxy-2'-methoxy-(6'',6''-dimethylpyrano)-(7,6: 2'',3'')-isoflavanone ( 4), and 3( R)-5,4'-dihydroxy-7,2'-dimethoxy-6-geranylisoflavanone ( 5) were isolated. The structures of the compounds were elucidated on the basis of spectroscopic analysis. All isolates exhibited good immunosuppressive activities on mitogen-induced splenocyte proliferation, and their cytotoxicity on splenic lymphocytes was also tested.
authors.affiliation: School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China.
authors.forename: Qing-Yao
authors.initials: QY
authors.lastname: Shou
authors.forename: Qing
authors.initials: Q
authors.lastname: Tan
authors.forename: Zhengwu
authors.initials: Z
authors.lastname: Shen
mesh_terms: D002478:Cells, Cultured; D007887:Fabaceae / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005419:Flavonoids