Synthesis of Analogues of Congo Red and Evaluation of Their Anti-Prion Activity
作者:Shane Sellarajah、Tamuna Lekishvili、Claire Bowring、Andrew R. Thompsett、Helene Rudyk、Christopher R. Birkett、David R. Brown、Ian H. Gilbert
DOI:10.1021/jm049922t
日期:2004.10.1
No cure as of yet exists for any of the transmissible spongiform encephalopathies. In this paper, we describe the synthesis of analogues of Congo red and evaluation against a cellular model of infection, the SMB (scrapie mouse brain) persistently infected cell line, for their ability to inhibit the infectivity of the abnormal form of prion protein (PrP-res). The compounds have also been tested for their ability to inhibit the polymerization of PrPC by PrP-res. A number of analogues showed inhibition of PrP-res infectivity at nanomolar concentrations. Several analogues show promise; the most active compound, 2a, inhibits the formation of PrP-res in SMB cells with an EC50 of 25-50 nM.
Activity of diimidazoline amides against African trypanosomiasis
作者:Yuxiang Dong、Xiaofang Wang、Monica Cal、Marcel Kaiser、Jonathan L. Vennerstrom
DOI:10.1016/j.bmcl.2013.12.064
日期:2014.2
diimidazoline mono- and diamides that were as potent as pentamidine against Trypanosoma brucei rhodesiense in vitro. All of these were also less cytotoxic than pentamidine, but none was as effective as the latter in a T. brucei rhodesiense-infected mouse model. A single imidazoline may be sufficient for high antitrypanosomal activity provided that a second weak base functional group is present.