Rapid synthesis of internal peptidyl α-ketoamides by on resin oxidation for the construction of rhomboid protease inhibitors?

RSC Advances Pub Date: 2021-01-20 DOI: 10.1039/D0RA10614C

Abstract

Rhomboid proteases are intramembrane serine proteases, which are involved in a wide variety of biological processes and have been implied in various human diseases. Recently, peptidyl α-ketoamides have been reported as rhomboid inhibitors with high potency and selectivity – owing to their interaction with both the primed and non-primed site of the target protease. However, their synthesis has been performed by solution phase chemistry. Here, we report a solid phase strategy towards ketoamides as rhomboid protease inhibitors, allowing rapid synthesis and optimization. We found that the primed site binding part of inhibitors is crucial for potency.

Graphical abstract: Rapid synthesis of internal peptidyl α-ketoamides by on resin oxidation for the construction of rhomboid protease inhibitors
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