Cardiotonic agents. Synthesis and cardiovascular properties of novel 2-arylbenzimidazoles and azabenzimidazoles
摘要:
Novel 2-arylbenzimidazoles and azabenzimidazoles were synthesized, and their inotropic action was evaluated. Changes in left ventricular pressure, dP/dt max, were measured as an index of cardiac contractility. The structural features that impart optimal inotropic activity are presented. The most potent compounds were evaluated orally in conscious dogs with implanted Konigsberg pressure transducers. To investigate the mechanism of action, the most potent compounds were tested for their calcium-sensitizing properties and their potential for the inhibition of phosphodiesterase. Two compounds, 1 and 4 1, showed interesting in vitro and oral activity without side effects. They have a more potent calcium-sensitizing effect than MCI-154 and are under futher investigation.
[EN] OLIGOHETEROAROMATIC LUMINISCENT ASSEMBLIES AS HIGH-AFFINITY DNA SEQUENCE-DIRECTED LIGANDS<br/>[FR] ENSEMBLES LUMINESCENTS OLIGO-HETEROAROMATIQUES EN TANT QUE LIGANDS A ORIENTATION SEQUENTIELLE D'ADN A AFFINITE ELEVEE
申请人:UNIV SASKATCHEWAN
公开号:WO2007045096A1
公开(公告)日:2007-04-26
[EN] The present invention provides a novel class of oligoheteroaromatic assemblies with luminescence characteristics and composition based on integrated polyheterocyclic polyamide oligomers of multiple nitrogen-containing heteroaromatic of the general formula (I) This novel class of compounds of the present invention is capable of binding to targeted DNA sequence in the minor groove, and thus is useful for genomics applications. In particular, the compounds of the invention binds to the DNA at a binding stoichiometry of 2: 1 ternary complexation with very high affinity and sequence selectivity. [FR] L'invention concerne une nouvelle classe d'ensembles oligo-hétéroaromatiques présentant des caractéristiques de luminescence et une composition fondée sur des oligomères polyamides polyhétérocycliques solidaires de multiples hétéroaromatiques contenant de l'azote de formule générale (I). Cette nouvelle classe de composés peut se lier à la séquence d'ADN ciblée dans la petite rainure; elle est par conséquent utile dans des applications génomiques. Plus précisément, les composés selon l'invention se lient à l'ADN à une stoechiométrie de liaison de complexion ternaire 2:1 avec une affinité et une sélectivité séquentielle très élevées.