6-Acyl-4-aryl/alkyl-5,7-dihydroxycoumarins as anti-inflammatory agents
2006; Elsevier BV; Volume: 14; Issue: 13 Linguagem: Inglês
10.1016/j.bmc.2006.02.042
ISSN1464-3391
AutoresChun‐Mao Lin, Sheng‐Tung Huang, Fu-Wei Lee, Hsien‐Saw Kuo, Mei-Hsiang Lin,
Tópico(s)Plant chemical constituents analysis
ResumoA series of coumarin derivatives were synthesized in two steps from phloroglucinol. The anti-inflammatory activities of these derivatives were evaluated by means of inhibiting NO production in LPS-induced RAW 264.7 cells. Derivatives 3, 8, 10, 11, and 13 exhibited low micromolar levels of anti-inflammatory activities, and these derivatives also protected DNA against hydroxyl radical attack. Coumarin derivative 8 was the most potent derivative among those tested herein against NO production in LPS-induced RAW 264.7 cells with an IC50 value of 7.6 μM, and it effectively reduced the hydroxyl radical production by 50% at 100 μM in the electron spin resonance study.
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