Synthesis and biological evaluation of novel 2′,4′,5′-trimethoxyflavonol derivatives as anti-inflammatory and antimicrobial agents
作者:Girish D. Hatnapure、Ashish P. Keche、Atish H. Rodge、Rajesh H. Tale、Satish S. Birajdar、Mahendra J. Pawar、Vandana M. Kamble
DOI:10.1007/s00044-013-0651-z
日期:2014.1
A series of novel 3-hydroxy-2-(2,4,5-trimethoxyphenyl)-4H-chromen-4-one (flavonol) derivatives (2a-u) of biological interest have been prepared via CLAISEN-SCHMIDT condensation followed by ALGAR-FLYNN-OYAMADA reaction and to search for the potent nonsteroidal anti-inflammatory agents from this novel series. All the synthesized compounds have been screened for their in vitro proinflammatory cytokines tumor necrosis factor (TNF-alpha) and interleukin-6 (IL-6) inhibitory activity along with antimicrobial activity. As many as three compounds viz. 2h, 2l, and 2q from this novel series were found to be potent TNF-alpha and IL-6 inhibitor (up to 72-81 % TNF-alpha and 86-92 % IL-6 inhibitory activity) but at 10 mu M concentration as compared with the standard dexamethasone (71 % TNF-alpha and 84 % IL-6 inhibitory activities at 1 mu M concentration). While the compounds 2d, 2m, 2n, and 2s were found to be potent antimicrobial agent showing even 2-2.5-fold more potency than that of standard ciprofloxacin and miconazole at the same MIC value of 10 mu g/mL.