Inhibitors of the Hepatitis C Virus NS3 Protease with Basic Amine Functionality at the P3-Amino Acid N-Terminus: Discovery and Optimization of a New Series of P2−P4 Macrocycles
作者:Steven Harper、Marco Ferrara、Benedetta Crescenzi、Marco Pompei、Maria Cecilia Palumbi、Jillian M. DiMuzio、Monica Donghi、Fabrizio Fiore、Uwe Koch、Nigel J. Liverton、Silvia Pesci、Alessia Petrocchi、Michael Rowley、Vincenzo Summa、Cristina Gardelli
DOI:10.1021/jm900372w
日期:2009.8.13
In a follow-Lip to our recent disclosure of P2-P4 macrocyclic inhibitors of the hepatitis C virus (HCV) NS3 protease (e.g., 1, Chart 1), we report a new but related compound series featuring a basic amine at the N-terminus of the P3-amino acid residue. Replacement of the electroneutral P3-amino acid capping group (which is a feature of almost all tripeptide-like inhibitors of NS3 reported to date) with a basic group is not only tolerated but can result in advantageous cell based potency. Optimization of this new class of P3-amine based inhibitors gave compounds such as 25 and 26 that combine excellent cell based activity with pharmacokinetic properties that are attractive for an antiviral targeting HCV.