Rapid discovery and structure-activity profiling of novel inhibitors of human immunodeficiency virus type 1 protease enabled by the copper(I)-catalyzed synthesis of 1,2,3-triazoles and their further functionalization

J Med Chem. 2006 Dec 28;49(26):7697-710. doi: 10.1021/jm060754+.

Abstract

Building from the results of a computational screen of a range of triazole-containing compounds for binding efficiency to human immunodeficiency virus type 1 protease (HIV-1-Pr), a novel series of potent inhibitors has been developed. The copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC), which provides ready access to 1,4-disubstituted-1,2,3-triazoles, was used to unite a focused library of azide-containing fragments with a diverse array of functionalized alkyne-containing building blocks. In combination with direct screening of the crude reaction products, this method led to the rapid identification of a lead structure and readily enabled optimization of both azide and alkyne fragments. Replacement of the triazole with a range of alternative linkers led to greatly reduced protease inhibition; however, further functionalization of the triazoles at the 5-position gave a series of compounds with increased activity, exhibiting Ki values as low as 8 nM.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Combinatorial Chemistry Techniques
  • Computer Simulation
  • Copper / pharmacology*
  • Crystallography, X-Ray
  • HIV Infections / drug therapy
  • HIV Protease / chemistry
  • HIV Protease / drug effects*
  • HIV Protease Inhibitors / chemical synthesis
  • HIV Protease Inhibitors / chemistry
  • HIV Protease Inhibitors / pharmacology*
  • HIV-1 / drug effects
  • HIV-1 / enzymology*
  • Humans
  • Models, Molecular
  • Molecular Structure
  • Structure-Activity Relationship
  • Triazoles / chemical synthesis*
  • Triazoles / chemistry
  • Triazoles / pharmacology
  • Virus Replication

Substances

  • HIV Protease Inhibitors
  • Triazoles
  • Copper
  • HIV Protease