KNI-272

**Semantic type:** Amino Acid, Peptide, or Protein|Pharmacologic Substance

**Definition:** A synthetic peptide-based antiviral agent. As a peptidomimetic substrate containing an unnatural amino acid, allophenylnorstatine, KNI-272 selectively binds to and inhibits the human immunodeficiency virus (HIV) 1 and 2 proteases, thereby preventing cleavage of the gag-pol viral polyprotein and resulting in the release of immature, noninfectious virions. (NCI04)

**Synonyms:** - 4-Thiazolidinecarboxamide, N-(1,1-dimethylethyl)-3- [2-hydroxy-3-[[2-[[(5-isoquinolinyloxy)acetyl]amino]-3- (methylthio)-1-oxopropyl]amino]-1-oxo-4-phenylbutyl]-,[4R-[3[2S*, 3S*(R*)],4R*]]