2-(2-Thienyl)-5,6-dihydroxy-4-carboxypyrimidines as Inhibitors of the Hepatitis C Virus NS5B Polymerase: Discovery, SAR, Modeling, and Mutagenesis
作者:Uwe Koch、Barbara Attenni、Savina Malancona、Stefania Colarusso、Immacolata Conte、Marcello Di Filippo、Steven Harper、Barbara Pacini、Claudia Giomini、Steven Thomas、Ilario Incitti、Licia Tomei、Raffaele De Francesco、Sergio Altamura、Victor G. Matassa、Frank Narjes
DOI:10.1021/jm051064t
日期:2006.3.1
Infections caused by hepatitis C virus (HCV) are a significant world health problem for which novel therapies are in urgent demand. The polymerase of HCV is responsible for the replication of viral RNA. We recently disclosed dihydroxypyrimidine carboxylates 2 as novel, reversible inhibitors of the HCV NS5B polymerase. This series was further developed into 5,6-dihydroxy-2-(2-thienyl)pyrimidine-4-carboxylic acids such as 34 (EC50 9.3 mu M), which now show activity in the cell-based HCV replication assay. The structure-activity relationship of these inhibitors is discussed in the context of their physicochemical properties and of the polymerase crystal structure. We also report the results of mutagenesis experiments which support the proposed binding model, which involves pyrophosphate-like chelation of the active site Mg ions.
4,5-Dihydroxypyrimidine Methyl Carboxylates, Carboxylic Acids, and Carboxamides as Inhibitors of Human Cytomegalovirus pUL89 Endonuclease
作者:Tianyu He、Tiffany C. Edwards、Jiashu Xie、Hideki Aihara、Robert J. Geraghty、Zhengqiang Wang
DOI:10.1021/acs.jmedchem.2c00203
日期:2022.4.14
Humancytomegalovirus (HCMV) terminase complex entails a metal-dependent endonuclease at the C-terminus of pUL89 (pUL89-C). We report herein the design, synthesis, and characterization of dihydroxypyrimidine (DHP) acid (14), methyl ester (13), and amide (15) subtypes as inhibitors of HCMV pUL89-C. All analogs synthesized were tested in an endonuclease assay and a thermal shift assay (TSA) and subjected