Imidazo[1,2-a]pyridines. II. Ozonolysis of imidazo[1,2-a]pyridines and synthesis of cardiotonic agents

Article abstract of DOI:10.1248/cpb.40.666

The metabolite of loprinone (E-1020) in dogs, 5-(2-aminopyridin-5-yl)-1,2-dihydro-6-methyl-2-oxo-3-pyridine carbonitrile (9), was prepared via ozonolysis of imidazo[1,2-a]pyridinylpyridines and evaluated for positive inotropic activity. Its potency was le