Porous Organic Polymer-Derived Nanopalladium Catalysts for Chemoselective Synthesis of Antitumor Benzofuro[2,3-<i>b</i>]pyrazine from 2-Bromophenol and Isonitriles
作者:Mao-Rui Wang、Li Deng、Guo-Chen Liu、Ling Wen、Jin-Ge Wang、Ke-Bin Huang、Hai-Tao Tang、Ying-Ming Pan
DOI:10.1021/acs.orglett.9b01230
日期:2019.7.5
An efficient strategy for the synthesis of benzofuro[2,3-b]pyrazines was developed. These tricyclic scaffolds were formed through a multistep cascade sequence, which includes double insertion of isonitriles and chemoselective bicyclization. In this reaction, a nanopalladium was used as a recyclable catalyst. Product 3w exhibited excellent anticancer activity toward T-24 (IC50 = 12.5 +/- 0.9 mu M) and HeLa (IC50 = 14.7 +/- 1.6 mu M) cells. We also explored the action mechanism of 3w on T-24 cells.