已开发了钴催化的萘甲酰胺的CH羰基化反应,用于合成苯并[ cd ]吲哚-2(1 H)-一个支架。该反应采用无痕导向基团,并使用苯甲酸1,3,5-三甲酸三乙酯作为CO源,以中等至高收率提供各种游离的(NH)-苯并[ cd ]吲哚-2(1 H)-(高达88%)。使用该方案,也完成了BET溴结构域抑制剂A和B的总合成。
Aristoxazole Analogues. Conversion of 8-Nitro-1-naphthoic Acid to 2-Methylnaphtho[1,2-<i>d</i>]oxazole-9-carboxylic Acid: Comments on the Chemical Mechanism of Formation of DNA Adducts by the Aristolochic Acids
作者:Horacio A. Priestap、Manuel A. Barbieri、Francis Johnson
DOI:10.1021/np300137f
日期:2012.7.27
2-Methylnaphtho[1,2-d]oxazole-9-carboxylic acid was obtained by reduction of 8-nitro-1-naphthoic acid with zinc–aceticacid. This naphthoxazole is a condensation product between an 8-nitro-1-naphthoic acidreduction intermediate and acetic acid and is a lower homologue of aristoxazole, a similar condensation product of aristolochic acid I with acetic acid that was previously reported. Both oxazoles
2-甲基萘[1,2- d ]恶唑-9-羧酸是通过用锌-乙酸还原8-硝基-1-萘甲酸而获得的。该萘恶唑是8-硝基-1-萘甲酸还原中间体和乙酸之间的缩合产物,并且是马兜铃唑的较低同系物,后者是先前报道的马兜铃酸I与乙酸的类似缩合产物。据信这两种恶唑都是通过常见的氮/碳共离子机理而产生的,该机理可能与导致马兜铃酸-DNA-加合物的机理有关。