Évaluation de l'activité inhibitrice calcique d'une série de benzylphosphonates de diéthyle
摘要:
Thirty-nine diethyl benzylphosphonates related to Fostedil were evaluated as calcium antagonists, using the inhibition test on aortic contraction in the rabbit, which was more selective than the negative inotropic activity test on guinea-pig left atrial muscle. Six compounds were found to have weak activity compared with Fostedil. Structure-activity relationships indicated a certain lipophilic influence; no correlation was found with electronic parameters. The prerequisite structure to obtain active products seems to require 2 conjugated aromatic rings separated by an optimal distance.
SELF-ASSEMBLING PEPTIDES BEARING ORGANIC ELECTRONIC FUNCTIONALITY AND APPLICATIONS EMPLOYING THE SAME
申请人:Tovar John Dayton
公开号:US20120101022A1
公开(公告)日:2012-04-26
The aqueous self-assembly of oligopeptide-flanked π-conjugated molecules into discrete one-dimensional nanostructures is described. Unique to these molecules is the fact that the π-conjugated unit has been directly embedded within the peptide backbone by way of a synthetic amino acid with π-functionality that is compatible with standard Fmoc-based peptide synthesis or by way of a diacid or other bis(electrophile) that can covalently cross-link peptide chains presented on a synthesis support. The peptide-based molecular designs enforce intimate π-π communication within the aggregates after charge-screening and self-assembly, making these nanostructures attractive for optical or electronic applications in biological environments. In other embodiments, a convenient method to incorporate π-electron units into peptides that assemble into amyloid-like supramolecular polymers is disclosed. Self-assembly manipulates these “electronic peptides” into delocalized sub-10 nm one dimensional (1-D) nanostructures under completely aqueous conditions.
Provided are certain benzothiazole, imidazothiazole, imidazopyrimidine and imidazopyridine compounds, including, for example: formula (I) and pharmaceutically and physiologically acceptable salts, hydrates, and solvates thereof. Such compounds can be used as diagnostic ligands or labels of tau protein and PHF.
Provided are certain benzothiazole, imidazothiazole, imidazopyrimidine and imidazopyridine compounds, including, for example: formula (I) and pharmaceutically and physiologically acceptable salts, hydrates, and solvates thereof. Such compounds can be used as diagnostic ligands or labels of tau protein and PHF.