Novel Peptidomimetic Hepatitis C Virus NS3/4A Protease Inhibitors Spanning the P2-P1' Region.

Lampa AK, Bergman SM, Gustafsson SS, Alogheli H, Akerblom EB, Lindeberg GG, Svensson RM, Artursson P, Danielson UH, Karlén A, Sandström A

ACS Med Chem Lett 5 (3) 249-254 [2014-03-13; online 2013-08-02]

Herein, novel hepatitis C virus NS3/4A protease inhibitors based on a P2 pyrimidinyloxyphenylglycine in combination with various regioisomers of an aryl acyl sulfonamide functionality in P1 are presented. The P1' 4-(trifluoromethyl)phenyl side chain was shown to be particularly beneficial in terms of inhibitory potency. Several inhibitors with K i-values in the nanomolar range were developed and included identification of promising P3-truncated inhibitors spanning from P2-P1'. Of several different P2 capping groups that were evaluated, a preference for the sterically congested Boc group was revealed. The inhibitors were found to retain inhibitory potencies for A156T, D168V, and R155K variants of the protease. Furthermore, in vitro pharmacokinetic profiling showed several beneficial effects on metabolic stability as well as on apparent intestinal permeability from both P3 truncation and the use of the P1' 4-(trifluoromethyl)phenyl side chain.

Chemical Biology Consortium Sweden (CBCS) [Collaborative]

PubMed 24900813

DOI 10.1021/ml400217r

Crossref 10.1021/ml400217r

pmc: PMC4027635

Uppsala Drug Optimization and Pharmaceutical Profiling (UDOPP)
ADME of Therapeutics (UDOPP)

Publications 9.5.0