Novel functionalized melamine-based nitroheterocycles: synthesis and activity against trypanosomatid parasites
作者:Alessandro Baliani、Valerie Peal、Ludovic Gros、Reto Brun、Marcel Kaiser、Michael P. Barrett、Ian H. Gilbert
DOI:10.1039/b813394h
日期:——
Human African trypanosomiasis (HAT), caused by the protozoan parasite Trypanosoma brucei spp., is a major health problem in sub-Saharan Africa. New drugs are urgently required for the disease. Selective uptake of toxic compounds into trypanosomes has been achieved by exploiting plasma membrane transporters. For example, the P2 aminopurine transporter, along with other transporters, selectively concentrates melamine and benzamidine moieties into trypanosomes. We have previously reported the use of the melamine motif to selectively target nitrofuran to the trypanosome. In this paper we report the further investigation of the structure activity relationships and the effect of the introduction of different functionalized substituents onto the melamine unit. Most of the compounds tested in vitro for their trypanocidal activity showed activities in the submicromolar range against T. b. rhodesiense.
人类非洲锥虫病(HAT),由原生动物寄生虫布氏锥虫引起,是撒哈拉以南非洲地区的一个主要健康问题。该疾病急需新药。通过利用细胞膜转运蛋白,已经实现了将毒性化合物选择性摄取进入锥虫体内。例如,P2氨基嘌呤转运蛋白以及其他转运蛋白,能够将蜜胺和苄胺基团选择性聚集到锥虫体内。我们之前报道了利用蜜胺基序选择性靶向硝呋喃至锥虫的方法。在本篇论文中,我们进一步研究了结构活性关系,并探究了将不同功能化取代基引入蜜胺单元的影响。大部分在体外测试的化合物对罗德西亚布氏锥虫显示出亚微摩尔级别的杀锥虫活性。