Synthesis of 2-arylindole derivatives and evaluation as nitric oxide synthase and NFκB inhibitors
作者:Xufen Yu、Eun-Jung Park、Tamara P. Kondratyuk、John M. Pezzuto、Dianqing Sun
DOI:10.1039/c2ob26456k
日期:——
small molecule drug-like inhibitors blocking both nitricoxide synthase and NFκB could offer a synergistic therapeutic approach in the prevention and treatment of inflammation and cancer. During the course of evaluating the biological potential of a commercial compound library, 2-phenylindole (1) displayed inhibitory activity against nitrite production and NFκB with IC50 values of 38.1 ± 1.8 and 25.4
A copper-catalyzed process for the synthesis of substituted quinazolinesfrom benzonitriles and 2-ethynylanilines using molecular oxygen (O2) as sole oxidant is described. The mild catalytic system enabled the effective cleavage of the C–C triple bond and construction of new C–N and C–C bonds in one operation. Furthermore, the compound N,N-dimethyl-4-(2-(4-(trifluoromethyl)phenyl)quinazolin-4-yl)aniline
An efficient nickel-catalyzed intramolecular direct arylation of imines with challenging aryl chlorides has been developed. The versatile nickel catalysis made use of easily accessible imines and delivered diversely decorated 2-arylindoles of considerable importance to biological and medicinal chemistry.
Pd/β-cyclodextrin-catalyzed C–H functionalization in water: a greener approach to regioselective arylation of (NH)-indoles with aryl bromides
作者:Peng Xu、Xin Hong Duan
DOI:10.1039/d1nj03400f
日期:——
A greener and more practical strategy for the site-selective C–H arylation of (NH)-indoles via coupling of (hetero)aryl bromides was developed, in which β-cyclodextrin, acting as both a ligand for Na2PdCl4 and a host for indoles, enables the reactions to occur easily in water. The key advantage of this method is the ingenious merging of aqueous homogeneous catalysis and ligand mediation, leading to
开发了一种更环保、更实用的策略,用于通过(杂)芳基溴化物的偶联对 (NH)-吲哚进行位点选择性 C-H 芳基化,其中 β-环糊精作为 Na 2 PdCl 4的配体和吲哚的宿主,使反应在水中容易发生。这种方法的关键优势是水相均相催化和配体介导的巧妙融合,导致具有广泛底物范围和官能团耐受性的 C3-芳基吲哚的高度区域选择性形成。此外,区域选择性可以通过改变碱基的性质而从 C3 位切换到 C2 位,而无需使用 ArI 作为底物。
Synthesis of Indoles via Domino Reactions of 2-Methoxytoluene and Nitriles
2-Arylindoles are privileged structures widely present in biologically active molecules. New sustainable synthetic routes toward their synthesis are, therefore, in high demand. Herein, a mixed base-promoted benzylic C–H deprotonation of commercially available ortho-anisoles, addition of the resulting anion to benzonitriles, and SNAr to displace the methoxy group provide indoles. A diverse array of
2-Arylindoles 是广泛存在于生物活性分子中的特殊结构。因此,对其合成的新的可持续合成路线的需求量很大。在此,混合碱促进市售邻苯甲醚的苄基 C-H 去质子化,将所得阴离子添加到苯甲腈,以及用于置换甲氧基的S N Ar 提供吲哚。在不添加过渡金属催化剂的情况下,以良好的产率(>30 个实例,产率高达 99%)制备了多种多样的 2-芳基吲哚。