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  • Title: Discovery of novel potent and selective dipeptide hepatitis C virus NS3/4A serine protease inhibitors.
    Author: Raboisson P, Lin TI, Kock Hd, Vendeville S, Vreken WV, McGowan D, Tahri A, Hu L, Lenz O, Delouvroy F, Surleraux D, Wigerinck P, Nilsson M, Rosenquist S, Samuelsson B, Simmen K.
    Journal: Bioorg Med Chem Lett; 2008 Sep 15; 18(18):5095-100. PubMed ID: 18722116.
    Abstract:
    Starting from the previously reported HCV NS3/4A protease inhibitor BILN 2061, we have used a fast-follower approach to identify a novel series of HCV NS3/4A protease inhibitors in which (i) the P3 amino moiety and its capping group have been truncated, (ii) a sulfonamide is introduced in the P1 cyclopropyl amino acid, (iii) the position 8 of the quinoline is substituted with a methyl or halo group, and (iv) the ring size of the macrocycle has been reduced to 14 atoms. SAR analysis performed with a limited set of compounds led to the identification of N-{17-[8-chloro-2-(4-isopropylthiazol-2-yl)-7-methoxyquinolin-4-yloxy]-2,14-dioxo-3,15-diazatricyclo [13.3.0.0 [Bartenschlager, R.; Lohmann, V. J. Gen. Virol. 2000, 81, 1631; Vincent Soriano, Antonio Madejon, Eugenia Vispo, Pablo Labarga, Javier Garcia-Samaniego, Luz Martin-Carbonero, Julie Sheldon, Marcelle Bottecchia, Paula Tuma, Pablo Barreiro Expert Opin. Emerg. Drugs, 2008, 13, 1-19]]octadec-7-ene-4-carbonyl}(1-methylcyclopropyl)(1-methylcyclopropyl)sulfonamide 19l an extremely potent (K(i)=0.20 nM, EC(50)=3.7 nM), selective, and orally bioavailable dipeptide NS3/4A protease inhibitor, which has features attractive for further preclinical development.
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