Discovery of a benzimidazole series of ADAMTS-5 (aggrecanase-2) inhibitors by scaffold hopping
摘要:
We describe a medicinal chemistry approach to generate a series of benzimidazoles bearing thiazolidin-4-one using scaffold hopping from thiazole 1, our previously described thiazole. Our goal was to discover a potent and permeable small-molecule ADAMTS-5 inhibitor. The results suggest that small compound 22 shows promise as a potent small-molecule ADAMTS-5 inhibitor with good permeability. (C) 2013 Elsevier Masson SAS. All rights reserved.
Heating 3-formylchromone with a variety of benzimidazoles and imidazoles in N,N-dimethylformamide in the presence of chlorotrimethylsilane as a promoter and water-scavenger gave functionalized pyrido[1,2-a]benzimidazoles and imidazo[1,2-a]pyridines.