Optimization of Small-Molecule Inhibitors of Influenza Virus Polymerase: From Thiophene-3-Carboxamide to Polyamido Scaffolds
摘要:
Influenza virus infections represent a serious concern to public health, being characterized by high morbidity and significant mortality. To date, compounds targeting the viral ion-channel M2 or the viral neuraminidase are the drugs available for treatment of influenza, but the emergence of drug-resistant viral mutants renders the search for novel targets and their possible inhibitors a major priority. Recently, we I I demonstrated that the viral RNA-dependent RNA polymerase (RdRP) complex can be an optimal target of protein protein disruption by small molecules, with thiophene-3-carboxamide derivatives emerging as promising candidates for the development of new anti-influenza drugs with broad-spectrum activity. Here, we report a further dissection of the thiophene-3-carboxamide structure. By using a GRID molecular interaction field (MIF)-based scaffold-hopping approach, more potent and nontoxic polyamido derivatives were identified, highlighting a new space in the chemical variability of RdRP inhibitors. Finally, a possible pharmacophoric model highlighting the key features required for RdRP inhibition is proposed.
Synthesis and anticancer activity of N-substituted 2-arylquinazolinones bearing trans-stilbene scaffold
摘要:
A novel series of 2-arylquinazolinones 7a-o bearing trans-stilbene moiety were designed, synthesized, and evaluated against human breast cancer cell lines including human breast adenocarcinoma (MCF-7 and MDA-MB-231) and human ductal breast epithelial tumor (T-47D). Among the tested compounds, the sec-butyl derivative 7h showed the best profile of activity (IC50 < 5 mu M) against all cell lines, being 2-fold more potent than standard drug, etoposide. Our investigation revealed that the cytotoxic activity was significantly affected by N3-alkyl substituents. Furthermore, the morphological analysis by acridine orange/ethidium bromide double staining test and flow cytometry analysis indicated that the prototype compound 7h can induce apoptosis in MCF-7 and MDA-MB-231 cells. (C) 2015 Elsevier Masson SAS. All rights reserved.
Metal-free oxidative synthesis of quinazolinones via dual amination of sp<sup>3</sup> C–H bonds
作者:Dan Zhao、Teng Wang、Jian-Xin Li
DOI:10.1039/c4cc02648a
日期:——
A novel metal-free synthesis of quinazolinones via dual amination of sp3 C–H bonds was developed. The sp3 carbon in methylarenes or adjacent to a heteroatom in DMSO, DMF or DMA was used as the one carbon synthon.
Gold(I)-Catalyzed Tandem Transformation: A Simple Approach for the Synthesis of Pyrrolo/Pyrido[2,1-<i>a</i>][1,3]benzoxazinones and Pyrrolo/Pyrido[2,1-<i>a</i>]quinazolinones
作者:Enguang Feng、Yu Zhou、Dengyou Zhang、Lei Zhang、Haifeng Sun、Hualiang Jiang、Hong Liu
DOI:10.1021/jo100228u
日期:2010.5.21
pyrrolo/pyrido[2,1-a][1,3]benzoxazinones and pyrrolo/pyrido[2,1-a]quinazolinones from 2-amino benzoic acids and 2-amino benzamides via a gold(I)-catalyzedtandemcoupling/cyclization process. The tricyclic or polycyclic molecular architectures were constructed in one pot with the formation of three new bonds.
我们已经开发了一种简单的方法,可通过2-氨基苯甲酸和2-氨基苯甲酰胺合成吡咯并/吡啶并[ 2,1- a ] [1,3]苯并恶嗪酮和吡咯并/吡啶并[ 2,1- a ]喹唑啉酮金(I)催化的串联偶联/环化过程。一环构建了三环或多环分子结构,形成了三个新的键。
A Facile Synthesis of 6H-[1,3,5]Triazino[2,1-b]quinazolin-6-ones
Triazinoquinazolinone derivatives are synthesized by cyclization of aminobenzamide-substituted triazine compounds in the presence of a proton source such as trifluoroacetic acid or hydrochloric acid. The reaction is mild, general, and gives high yield (>90%) of the cyclized product. This procedure allows, for the first time, access to triazinoquinazolinone compounds bearing different functionalities
Novel benzoazoles, benzoazines, benzothiazoles, benzothiazines and other related compounds possessing a 2,4-dihydroxyphenyl moiety were prepared. The compounds were obtained by the reaction of sulfinylbis[(2,4-dihydroxyphenyl)methanethione]s with the appropriate heterocyclic amines or hydrazines. The structures of the compounds were proved by IR, 1H NMR, and mass spectral data. Human cancer lines,
制备了具有2,4-二羟基苯基部分的新型苯并唑,苯并嗪,苯并噻唑,苯并噻嗪和其他相关化合物。通过亚磺酰基双[(2,4-二羟基苯基)甲硫基]与适当的杂环胺或肼的反应获得化合物。化合物的结构通过IR,1 H NMR和质谱数据证明。人类癌症系, 念珠菌 属和植物致病真菌被用于评估化合物的生物效价。另外,通过计算机估计了类药物性质。
Imidazoline derivatives as alpha-1A adrenoceptor ligands
申请人:Bigham Eric Cleveland
公开号:US06884801B1
公开(公告)日:2005-04-26
Compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof are disclosed. Such compounds are useful in the treatment of Alpha-1A mediated diseases or conditions such as urinary incontinence.