Page 1. Synthesis of 2-Amino-1,4-dihydro-4-quinolinones and Diaminomethylene Meldrum's Acids Derivatives as Potential Potassium Channel Openers Bénédicte Erb, Benoît Rigo* Laboratoire d'Ingénierie Moléculaire, Ecole des Hautes Etudes Industrielles, 13, rue de Toul, 59046 Lille, Cedex Bernard Pirotte ... Page 8. B. Erb, B. Rigo, B. Pirotte, and D. Couturier The structures of the new products were established by elemental analysis and spectral data. ...