Synthesis, biological activity, and evaluation of the mode of action of novel antitubercular benzofurobenzopyrans substituted on A ring
作者:Aikaterini Termentzi、Inana Khouri、Thomas Gaslonde、Soizic Prado、Brigitte Saint-Joanis、Fabienne Bardou、Elsa P. Amanatiadou、Ioannis S. Vizirianakis、Jana Kordulakova、Mary Jackson、Roland Brosch、Yves L. Janin、Mamadou Daffé、François Tillequin、Sylvie Michel
DOI:10.1016/j.ejmech.2010.09.048
日期:2010.12
2-chloroanilines (13–17) with 1,4-benzoquinone (18), reduction of the intermediate phenylbenzoquinones 19–22 to dihydroxybiphenyls, cyclisation to halo-2-hydroxydibenzofurans 24–27, and construction of the pyran ring by thermal rearrangement of the corresponding dimethylpropargyl ethers 35–38. Palladium catalyzed nucleophilic aromatic substitution permitted conversion of the halo to the corresponding hydroxy
抗分枝杆菌3,3-二甲基-3 H-苯并呋喃[3,2- f ] [1]苯并吡喃的缩合反应可合成8、9、10和11-卤代,羟基和甲氧基衍生物。的2-氯苯胺(重氮盐13 - 17与1,4-苯醌()18),还原中间体phenylbenzoquinones的19 - 22到二羟基联苯,环化卤代-2- hydroxydibenzofurans 24 - 27,并吡喃环的结构通过相应的二甲基炔丙基醚35 – 38的热重排。钯催化的亲核芳族取代使卤素转化为相应的羟基衍生物,该羟基衍生物被甲基化为甲氧基-3,3-二甲基-3 H-苯并呋喃[3,2- f ] [1]苯并吡喃。发现在A环上取代的所有化合物对牛分枝杆菌BCG和强毒株结核分枝杆菌H37Rv比参考化合物1更有效。为了证实对分枝杆菌细胞壁生物合成有影响的初步假设,研究了活性最高的衍生物对分支固醇的合成的影响。线性9-甲氧基-2,2-二甲基-2 H-苯并呋喃[2