Design, synthesis and evaluation of 1,2-benzisothiazol-3-one derivatives as potent caspase-3 inhibitors

Bioorg Med Chem. 2013 Jun 1;21(11):2960-7. doi: 10.1016/j.bmc.2013.03.075. Epub 2013 Apr 6.

Abstract

A number of 1,2-benzisothiazol-3-one derivatives were prepared through structural modification of the original compound from high-throughput screening. Some analogues (e.g., 6b, 6r, 6s and 6w) were identified as novel and potent caspase inhibitors with IC50 of nanomolar. Structure-activity relationship (SAR) studies for caspase-3 inhibition were evaluated in vitro. Molecular modeling studies provided further insight into the interaction of this class of compounds with activated caspase-3. The present small molecule caspase-3 inhibitor with novel structures different from structures of known caspase inhibitors revealed a new direction for therapeutic strategies directed against diseases involving abnormally up-regulated apoptosis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Caspase 3 / chemistry*
  • Caspase Inhibitors / chemical synthesis*
  • Caspase Inhibitors / chemistry
  • Drug Design
  • Enzyme Assays
  • High-Throughput Screening Assays
  • Humans
  • Molecular Docking Simulation
  • Recombinant Proteins / chemistry
  • Structure-Activity Relationship
  • Thiazoles / chemical synthesis*
  • Thiazoles / chemistry

Substances

  • Caspase Inhibitors
  • Recombinant Proteins
  • Thiazoles
  • Caspase 3
  • 1,2-benzisothiazoline-3-one