A new simple and efficientone-step procedure for the preparation of 3-substituted-4-hydroxyquinolin-2-one derivatives was developed. Product isolation is simple, isolated yields are good to excellent and this method tolerates a variety of substitution patterns.
The present invention relates to compounds of the formula (I),
salts thereof, to pharmaceutical compositions containing them and their use in medicine. In particular, the invention relates to compounds as activators of AMPK.
A new series of substituted quinoline and pyridinederivatives 6a-h are synthesized by the coupling of hydrazide derivatives 4a-b with substituted carboxylic acids 5a-c in the presence of N,N,N’,N’-tetramethyl-o-(benzotriazol-1-yl) uranium tetrafluoroborate TBTU as a coupling agent and lutidine as a base. The newly synthesized compounds 6a–l is characterized by analytical NMR and mass spectral data