identified novel small-molecule antagonists of the PACAP type I (PAC1) receptor using docking-based in silico screening followed by in vitro/vivo pharmacological assays. In the present study, we synthesized 18 novel derivatives based on the structure of PA-9, a recently developed antagonist of the PAC1 receptor, with a view to obtain a panel of compounds with more potentantagonistic and analgesic activities
Synthesis and Structure‐Activity Relationships of
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‐(4‐Benzamidino)‐Oxazolidinones: Potent and Selective Inhibitors of Kallikrein‐Related Peptidase 6
作者:Elena De Vita、Niels Smits、Helma Hurk、Elizabeth M. Beck、Joanne Hewitt、Gemma Baillie、Emily Russell、Andrew Pannifer、Véronique Hamon、Angus Morrison、Stuart P. McElroy、Philip Jones、Natalia A. Ignatenko、Nikolas Gunkel、Aubry K. Miller
DOI:10.1002/cmdc.201900536
日期:2020.1.7
AbstractKallikrein‐related peptidase 6 (KLK6) is a secreted serine protease that belongs to the family of tissue kallikreins. Aberrant expression of KLK6 has been found in different cancers and neurodegenerative diseases, and KLK6 is currently studied as a potential target in these pathologies. We report a novel series of KLK6 inhibitors discovered in a high‐throughput screen within the European Lead Factory program. Structure‐guided design based on docking studies enabled rapid progression of a hit cluster to inhibitors with improved potency, selectivity and pharmacokinetic properties. In particular, inhibitors 32 ((5R)‐3‐(4‐carbamimidoylphenyl)‐N‐((S)‐1‐(naphthalen‐1‐yl)propyl)‐2‐oxooxazolidine‐5‐carboxamide) and 34 ((5R)‐3‐(6‐carbamimidoylpyridin‐3‐yl)‐N‐((1S)‐1‐(naphthalen‐1‐yl)propyl)‐2‐oxooxazolidine‐5‐carboxamide) have single‐digit nanomolar potency against KLK6, with over 25‐fold and 100‐fold selectivities against the closely related enzyme trypsin, respectively. The most potent compound, 32, effectively reduces KLK6‐dependent invasion of HCT116 cells. The high potency in combination with good solubility and low clearance of 32 make it a good chemical probe for KLK6 target validation in vitro and potentially in vivo.