PubMed · 4697473
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E Grasso, A Vaccari, U Flauto. 1973-02-25. [Hypocalcemic convulsions].. https://pubmed.ncbi.nlm.nih.gov/4697473/
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Novel tetrahydrodiazabenzazulene derivatives, designed from the lead compound 1 discovered by screening of our in-house chemical library, were prepared and found to be potent neuropeptide Y-Y5 (NPY-Y5) receptor antagonists. The structure-activity relationships are described. Compounds 7 (FR240662) and 16 (FR252384) were especially attractive owing to their high affinities for the NPY-Y5 receptors, oral absorption and permeability to brain.
A series of noncovalent tripeptidic thrombin inhibitors incorporating amidrazone, amine and amidine functions at P1 was investigated. While the amidrazone and the amine series displayed limited oral absorption, the amidine series demonstrated generally good oral absorption and strong antithrombotic activity; the single-digit picomolar K(i) achieved from this series is among the best yet reported. The present work highlights the benzamidine compound 11f (LB30812) that exhibits excellent overall profiles of potency, oral absorption and antithrombotic efficacy.
The synthesis and biological activity of analogues containing spiro piperidinylpyridine and pyrrolidinylpyridine templates are described. The potent activity of these compounds as platelet aggregation inhibitors demonstrates the utility of the spiro structures as central template for nonpeptide RGD mimics.