Covalent Inhibitor
Library

Covalent Compounds
Small Molecules for Covalent Drug Discovery

 

Highlights
  • High quality, small molecule compounds with covalent warheads
  • Custom select from more than 70,000 compounds
Background

In the drug discovery literature spirocyclic compounds have demonstrated broad utility across a range of target classes including enzymes, GPCRs and protein-protein interactions. For example, AMG-8718 is a secretase inhibitor for Alzheimer’s disease; Compound 4, an inhibitor of acetyl CoA carboxylase, a target for treatment of metabolic syndrome; ETX0914, a DNA gyrase inhibitor which entered clinical trials for the treatment of gonorrhea; MK-1602, a calcitonin gene-related peptide antagonist, reported to have completed Phase 2 clinical trials for the treatment of migraine; Rolapitant, a neurokinin 1 receptor antagonist approved in 2015 for the treatment of delayed-phase chemotherapy-induced nausea and vomiting; Ledipasvir, which binds to the HCV NS5A protein, approved in 2014 for the treatment of hepatitis C; and MI-77301, a spirooxindole p53/MDM2 protein-protein interaction inhibitor that progressed into Phase 1 clinical trials in 2012.

The increased synthetic complexity of spirocyclic compounds has resulted in spirocyclic compounds being less well represented in the drug discovery patent literature and in small molecule screening offerings compared to non-spirocyclic compounds. Thus, where synthesis allows, designing spirocyclic systems into screening molecules is an attractive approach to achieve novelty and more 3D character. In addition, spirocycles composed of six-membered or smaller rings are either rigid or have a limited number of well-defined conformations; this attribute makes spirocyclic compounds well suited to structure-based drug design where spirocyclic scaffolds can be used to accurately position functional groups within a binding site targeting specific protein-ligand interactions.

Characteristics

Covalent Library compounds are lead-like and drug-like and have the following physiochemical and calculated property averages:

  • Molecular Weight Average: 363
  • Fsp3 Average: 0.6
  • clogP: Average: 1.5
  • TPSA: Average: 67
  • H-bond Donor Count Average = 0.9
  • H-bond Acceptor Count Average = 4.1
  • Rotatable Bond Count Average = 3.6
Format
  • Download structures and custom select compounds from the Covalent Library SDfiles
  • Compounds can be provided in 96-well and 384-well format
  • Amounts as low as 0.25 micromole (25ul of 10mM DMSO solution) available
  • Compounds are available as DMSO solutions or dry in micromole or mg amounts

For more information or a file of compound structures, please contact ChemBridge Sales