Calcium Channel Blockers

Özkaya, Esen; Yazganoğlu, Kurtuluş Didem

doi:10.1007/978-1-4471-6536-1_8

Cited by 1 publication

(1 citation statement)

References 88 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They also alter the heart rate to prevent peripheral and cerebral vasospasm and reduce chest pain caused by angina pectoris. CCBs are easily identified by the suffix ''dipine'' such as Amlodipine, Arnidipine, Barnidipine, Clindipine, Isradipine and Manidipine [8][9][10]. Nifedipine is one of the most common and classic CCBs and is a first-generation dihydropyridine, often used to reduce systemic vascular resistance and arterial pressure [11,12].…”

Section: Introductionmentioning

confidence: 99%

Design, Synthesis, Molecular Modeling, and Biological Evaluation of Novel Pyrimidine Derivatives as Potential Calcium Channel Blockers

et al. 2023

View full text Add to dashboard Cite

Pyrimidines play an important role in modern medical fields. They have a wide spectrum of biological activities such as antimicrobial, anticancer, anti-allergic, anti-leishmanial, antioxidant agents and others. Moreover, in recent years, 3,4-dihydropyrimidin-2(1H)ones have attracted researchers to synthesize them via Biginelli reaction and evaluate their antihypertensive activities as bioisosters of Nifedipine, which is a famous calcium channel blocker. Our new target compounds were prepared through one-pot reaction of thiourea 1, ethyl acetoacetate 2 and/or 1H-indole-2-carbaldehyde, 2-chloroquinoline-3-carbaldehyde, 1,3-diphenyl-1H-pyrazole-4-carbaldehyde, 3a–c in acid medium (HCl) yielding pyrimidines 4a–c, which in turn were hydrolyzed to carboxylic acid derivatives 5a–c which were chlorinated by SOCl2 to give acyl chlorides 6a–c. Finally, the latter were reacted with some selected aromatic amines, namely, aniline, p-toluidine and p-nitroaniline, producing amides 7a–c, 8a–c, and 9a–c. The purity of the prepared compounds was examined via TLC monitoring, and structures were confirmed by different spectroscopic techniques such as IR, 1HNMR, 13CNMR, and mass spectroscopy. The in vivo evaluation of the antihypertensive activity revealed that compounds 4c, 7a, 7c, 8c, 9b and 9c had comparable antihypertensive properties with Nifedipine. On the other hand, the in vitro calcium channel blocking activity was evaluated by IC50 measurement and results revealed that compounds 4c, 7a, 7b, 7c, 8c, 9a, 9b, and 9c had comparable calcium channel blocking activity with the reference Nifedipine. Based on the aforementioned biological results, we selected compounds 8c and 9c to be docked onto Ryanodine and dihydropyridine receptors. Furthermore, we developed a structure–activity relationship. The designed compounds in this study show promising activity profiles in reducing blood pressure and as calcium channel blockers, and could be considered as new potential antihypertensive and/or antianginal agents.

show abstract