NDLI: Theoretical studies, synthesis, and biological activity of 1-[(4-methylphenyl)sulfonyl]-5-oxo-2,3,4,5-tetrahydro-1H-1-benzazepine-4-carbonitrile (C9) as a non-peptide antagonist of the arginine vasopressin V1a and V2 receptors

Content Provider	Springer Nature Link
Author	Contreras Romo, M. Citlalli Correa Basurto, José Padilla Martínez, Itzia Martínez Archundia, Marlet Martínez Ramos, Federico Ślusarz, Magdalena J. López Pérez, Gilberto Quintanar Stepha, Andrés
Copyright Year	2013
Abstract	In this work, the synthesis of 1-[(4-methylphenyl)sulfonyl]-5-oxo-2,3,4,5-tetrahydro-1H-1-benzazepine-4-carbonitrile (C9) and the study of its biological activity as a new putative antagonist of vasopressin receptors are described. The chemical identification of the compound C9 was confirmed using 1H and 13C nuclear magnetic resonance. This compound contains a moiety core similar to those of vaptans; therefore, we decided to study the compound’s binding on vasopressin receptors (V1aR and V2R), whose models were built, refined by molecular dynamics simulations, and validated through docking studies. The biological effects of C9 on vascular smooth muscle (VSM) contractility and aquaresis were also tested. Rat aortic rings were used to test the inhibitory effect of C9 (0.0, 5.9, 59, and 590 μM) on AVP-induced VSM contraction (10 μM). The inhibition of the antidiuretic effect of vasopressin (50 μU/kg) by C9 (100 μg/kg) was determined using a water load test in rats. The results showed that C9 inhibits aortic rings’ contraction in a concentration-dependent manner, whereas C9 exhibited an aquaretic effect on urine flow. Docking studies showed that C9 reaches the vaptan binding site via the V1a and V2 receptors, which explains the similarity in their biological effects. The results indicate that C9 functions as an antagonist on both V1aR and V2R.
Starting Page	1581
Ending Page	1590
Page Count	10
File Format	PDF
ISSN	10542523
Journal	Medicinal Chemistry Research
Volume Number	23
Issue Number	3
e-ISSN	15548120
Language	English
Publisher	Springer US
Publisher Date	2013-09-04
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	1-[(4-Methyl phenyl)sulfonyl]-5-oxo-2,3,4,5-tetrahydro-1H-1-benzazepine-4-carbonitrile Vaptans Docking Molecular dynamic Vasopressin Vasopressin receptors Pharmacology/Toxicology Biochemistry Cell Biology
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Pharmacology, Toxicology and Pharmaceutics

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