%0 Journal Article %T A Short Review on Cardiotonic Steroids and Their Aminoguanidine Analogues %A Concepci¨®n P. Melero %A Manuel Medarde %A Arturo San Feliciano %J Molecules %D 2000 %I MDPI AG %R 10.3390/50100051 %X A short review on cardiotonic steroids and their analogues is presented. The natural, semisynthetic and synthetic derivatives, as well as their mechanism of action and structure-activity relationships are shown, with a special reference to aminoguanidine derivatives. %K Digitalis glycosides analogues %K structure-activity relationships %K inotropic activity %K Na+ %K K+-ATPase %K aminoguanidine analogues %U http://www.mdpi.com/1420-3049/5/1/51