title: Three new flavonoids and antiallergic, anti-inflammatory constituents from the heartwood of Dalbergia odorifera.
abstract: Three new flavonoids, (3R)-4'-methoxy-2',3,7-trihydroxyisoflavanone (11), 7-methoxy-3,3',4',6-tetrahydroxyflavone (18), and 2',7-dihydroxy-4',5'-dimethoxyisoflavone (22), were isolated from the heartwood of Dalbergia odorifera T. Chen. (Leguminosae), together with twenty-two known compounds, (S)-4-methoxydalbergione (1), cearoin (2), medicarpin (3), formononetin (4), sativanone (5), 3-hydroxy-9-methoxy-coumestan (6), meliotocarpan A (7), isoliquiritigenin (8), stevein (9), liquiritigenin (10), 3',4',7-trihydroxyflavanone (12), butein (13), 3'-hydroxymelanettin (14), koparin (15), bowdichione (16), fisetin (17), melanettin (19), sulfuretin (20), 3'-hydroxydaidzein (21), 3'-O-methylviolanone (23), xenognosin B (24), and dalbergin (25). These flavonoids were evaluated in antiallergic and anti-inflammatory tests. The results showed that (S)-4-methoxydalbergione (1) and cearoin (2) exhibited antiallergic activity while (S)-4-methoxydalbergione (1), cearoin (2), butein (13), koparin (15), bowdichione (16), 3'-O-methylviolanone (23), and xenognosin B (24) showed significant anti-inflammatory activity.
authors.affiliation: Graduate Institute of Pharmaceutical Chemistry, China Medical College, Taichung, Taiwan, R.O.C.
authors.forename: S C
authors.initials: SC
authors.lastname: Chan
authors.forename: Y S
authors.initials: YS
authors.lastname: Chang
authors.forename: J P
authors.initials: JP
authors.lastname: Wang
authors.forename: S C
authors.initials: SC
authors.lastname: Chen
authors.forename: S C
authors.initials: SC
authors.lastname: Kuo
mesh_terms: D000818:Animals; D018926:Anti-Allergic Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D008407:Mast Cells / Q000166:cytology / Q000187:drug effects*; D008516:Medicine, Chinese Traditional; D015394:Molecular Structure; D009504:Neutrophils / Q000187:drug effects / Q000502:physiology*; D010946:Plants, Medicinal; D051381:Rats; D017207:Rats, Sprague-Dawley; D013481:Superoxides / Q000097:blood; D013624:Taiwan
chemical_list: D018926:Anti-Allergic Agents; D000894:Anti-Inflammatory Agents, Non-Steroidal; D005419:Flavonoids; D013481:Superoxides