Anti-Influenza Drug Discovery: Structure−Activity Relationship and Mechanistic Insight into Novel Angelicin Derivatives
作者:Jiann-Yih Yeh、Mohane Selvaraj Coumar、Jim-Tong Horng、Hui-Yi Shiao、Fu-Ming Kuo、Hui-Ling Lee、In-Chun Chen、Chun-Wei Chang、Wen-Fang Tang、Sung-Nain Tseng、Chi-Jene Chen、Shin-Ru Shih、John T.-A. Hsu、Chun-Chen Liao、Yu-Sheng Chao、Hsing-Pang Hsieh
DOI:10.1021/jm901570x
日期:2010.2.25
By using a cell-based high throughput screening campaign,a novel angelicin derivative 6a was identified to inhibit influenza A (H1N1) virus induced Cytopathic effect in Madin-Darby canine kidney cell culture in low micromolar range. Detailed structure-activity relationship studies of 6a revealed that the angelicin scaffold is essential for activity in pharmacophore B, while meta-substituted phenyl/2-thiophene rings are optimal ill pharmacophore A and C. The optimized lead 4-methyl-9-phenyl-8-(thiophene-2-carbonyl)-furo[2,3-h]chromen-2-one (8g, IC50 = 70 nM) showed 64-fold enhanced activity compared to the high throughput screening (HTS) hit 6a. Also, 8g was found effective in case of influenza A (H3N2) and influenza B virus strains similar to approved anti-influenza drug zanamivir (4). Preliminary mechanistic studies suggest that these compounds act as anti-influenza agents by inhibiting ribonucleoprotein (RNP) complex associated activity and have the potential to be developed further, Which Could form the basis for developing additional defense against influenza pandemics.