Lipophilic Isosteres of a π–π Stacking Interaction: New Inhibitors of the Bcl-2-Bak Protein–Protein Interaction

ACS Medicinal Chemistry Letters
2012.0

Abstract

The discovery of new Bcl-2 protein-protein interaction antagonists is described. We replaced the northern fragment of ABT737 (π-π stacking interactions) with structurally simplified hydrophobic cage structures with much reduced conformational flexibility and rotational freedom. The binding mode of the compounds was elucidated by X-ray crystallography, and the compounds showed excellent oral bioavailability and clearance in rat PK studies.

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