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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
2-Aryl-2,2-difluoroacetamide FKBP12 ligands: synthesis and X-ray structural studies
G M Dubowchik1, V M Vrudhula, B Dasgupta
1Bristol-Myers Squibb Pharmaceutical Research Institute, P.O. Box 5100, Wallingford, Connecticut 06492-7660, USA. gene.dubowchik@bms.com
Organic Letters
|December 12, 2001
Summary
New difluoroacetamido esters targeting FKBP12 show potent rotamase inhibition, comparable to ketoamides. Structural analysis reveals fluorine interactions critical for ligand binding and activity.
Area of Science:
- Medicinal Chemistry
- Structural Biology
- Biochemistry
Background:
- FKBP12 is a peptidyl-prolyl cis-trans isomerase involved in various cellular processes.
- FKBP12 ligands are investigated for therapeutic potential, particularly as rotamase inhibitors.
- Developing novel ligands with high affinity and specific interactions is crucial for drug discovery.
Purpose of the Study:
- To synthesize and characterize novel 2-Aryl-2,2-difluoroacetamido-proline and pipecolate esters as FKBP12 ligands.
- To evaluate the rotamase inhibitory activity of these novel compounds.
- To elucidate the structural basis of ligand-FKBP12 interactions using X-ray crystallography.
Main Methods:
- Organic synthesis of difluoroacetamido esters.
- Enzyme inhibition assays to measure rotamase activity.
- X-ray crystallography to determine the binding mode of ligands within the FKBP12 active site.
Main Results:
- The synthesized difluoroacetamido esters demonstrated high affinity for FKBP12.
- Rotamase inhibitory activity was comparable to established ketoamide inhibitors.
- X-ray studies revealed specific interactions between fluorine atoms and FKBP12 residues (Phe36, Tyr26), including a potential hydrogen bond.
Conclusions:
- 2-Aryl-2,2-difluoroacetamido esters represent a promising new class of high-affinity FKBP12 ligands.
- The observed fluorine interactions contribute to the binding affinity and inhibitory potency.
- These findings provide a structural basis for the rational design of improved FKBP12 inhibitors.
