Ciluprevir was a drug used experimentally in the treatment of hepatitis C. It is manufactured by Boehringer Ingelheim and developed under the research code of BILN 2061. It was the first-in-class NS3/4A protease inhibitor to enter clinical development and tested in human. Ciluprevir is a potent competitive reversible inhibitor of NS3/4A protease from HCV genotype 1a (Ki = 0.3 nM) and 1b (Ki = 0.66 nM). It shows good selectivity for NS3 protease against representative serine and cysteine proteases, human leukocyte elastase and cathepsin B (IC50 > 30 μM).
{{Drugbox | IUPAC_name = (2R,6S,12Z,13aS,14aR,16aS)-6-[(Cyclopentyloxycarbonyl)amino]-2-({7-methoxy-2-[(propan-2-ylamino)-1,3-thiazol-4-yl]quinolin- 4-yl}oxy)-5,16-dioxo-1,2,3,6,7,8,9,10,11,13a,14,15,16,16a-tetradecahydrocyclopropa[e]pyrrolo[1,2-a][1,4]diazacyclopentadecine-14a(5H)-carboxylic acid | image = Ciluprevir.svg | image_class = skin-invert-image | width = 285 | alt = | caption =
| tradename = | pregnancy_AU = | pregnancy_US = | pregnancy_category = | legal_AU = | legal_CA = | legal_UK = | legal_US = | legal_status = Development terminated | routes_of_administration = By mouth
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).