Studies on the 4-benzoylpyridine-3-carboxamide entity as a fragment model of the Isoniazid–NAD adduct
作者:Sylvain Broussy、Vania Bernardes-Génisson、Heinz Gornitzka、Jean Bernadou、Bernard Meunier
DOI:10.1039/b415439h
日期:——
An ortho-metallationâelectrophilic substitution sequence was employed as a key step to build the 4-benzoylpyridine framework. It was found that 4-benzoylpyridine-3-carboxamide and an N-pyridyl alkylated derivative both exist in a unique cyclized hemiamidal structure, not in the usually expected keto-amide open form. These structures represent fragment models of the IsoniazidâNAD adducts involved in the mechanism of action of the antituberculous drug Isoniazid.
构建 4-苯甲酰基吡啶框架的关键步骤是采用正交金属化亲电取代序列。研究发现,4-苯甲酰基吡啶-3-甲酰胺和一种 N-吡啶烷基化衍生物都以独特的环化半酰胺结构存在,而不是通常预期的酮酰胺开放形式。这些结构代表了参与抗结核药物异烟肼作用机制的异烟肼-NAD加合物的片段模型。