抗疟疾的吡啶并[1,2- a ]苯并咪唑类化合物:铅优化,寄生虫生命周期阶段概况,机理评估,杀伤动力学和在小鼠模型中的体内口服功效
摘要:
对最近鉴定出的吡啶并[1,2- a ]苯并咪唑(PBI)抗疟药的进一步结构-活性关系(SAR)研究已导致鉴定出有效的,代谢稳定的化合物,从而在伯氏疟原虫小鼠模型中具有改善的体内口服功效以及针对寄生虫肝脏和配子细胞阶段的额外活性,使其成为临床前开发的潜在候选者。抑制hezozoin的形成可能有助于其作用机理。
抗疟疾的吡啶并[1,2- a ]苯并咪唑类化合物:铅优化,寄生虫生命周期阶段概况,机理评估,杀伤动力学和在小鼠模型中的体内口服功效
摘要:
对最近鉴定出的吡啶并[1,2- a ]苯并咪唑(PBI)抗疟药的进一步结构-活性关系(SAR)研究已导致鉴定出有效的,代谢稳定的化合物,从而在伯氏疟原虫小鼠模型中具有改善的体内口服功效以及针对寄生虫肝脏和配子细胞阶段的额外活性,使其成为临床前开发的潜在候选者。抑制hezozoin的形成可能有助于其作用机理。
A facile synthesis and microtubule-destabilizing properties of 4-(1H-benzo[d]imidazol-2-yl)-furazan-3-amines
作者:Andrei I. Stepanov、Alexander A. Astrat'ev、Aleksei B. Sheremetev、Nataliya K. Lagutina、Nadezhda V. Palysaeva、Aleksei Yu. Tyurin、Nataliya S. Aleksandrova、Nataliya P. Sadchikova、Kyrill Yu. Suponitsky、Olga P. Atamanenko、Leonid D. Konyushkin、Roman V. Semenov、Sergei I. Firgang、Alex S. Kiselyov、Marina N. Semenova、Victor V. Semenov
DOI:10.1016/j.ejmech.2015.02.051
日期:2015.4
4-(1H-benzo[d]imidazol-2-yl)-furazan-3-amines (BIFAs) were prepared in good yields (60–90% for each reaction step) via a novel procedure from aminofurazanyl hydroximoyl chlorides and o-diaminobenzenes. The synthetic sequence was run under mild reaction conditions, it was robust and did not require extensive purification of intermediates or final products. Furthermore, there was no need for protection of reactive moieties
Inhibition of the cellular function of perforin by 1-amino-2,4-dicyanopyrido[1,2-a]benzimidazoles
作者:Dani M. Lyons、Kristiina M. Huttunen、Kylie A. Browne、Annette Ciccone、Joseph A. Trapani、William A. Denny、Julie A. Spicer
DOI:10.1016/j.bmc.2011.05.013
日期:2011.7
A high throughput screen showed the ability of a 1-amino-2,4-dicyanopyrido[1,2-a]benzimidazole analogue to directly inhibit the lytic activity of the pore-forming protein perforin. A series of analogues were prepared to study structure-activity relationships (SAR) for the this activity, either directly added to cells or released in situ by KHYG-1 NK cells, at non-toxic concentrations. These studies showed that the pyridobenzimidazole moiety was required for effective activity, with strongly basic centres disfavoured. This class of compounds was relatively unaffected by the addition of serum, which was not the case for a previous class of direct inhibitors. (C) 2011 Elsevier Ltd. All rights reserved.