Vorapaxar is a first-in-class PAR-1 antagonistic drug based on the ent-himbacine scaffold. Detailed in this article are enantioselective and racemic routes to various novel vorapaxar analogues. Biological testing revealed these compounds to have moderate to excellent potencies against PAR-1 with the most potent analogue demonstrating an IC50 of 27 nM.
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http://dx.doi.org/10.1039/c5ob02541a | DOI Listing |
Int J Mol Sci
September 2024
Atherothrombosis Research Centre/Laboratory of Biochemistry, Department of Chemistry, University of Ioannina, 45100 Ioannina, Greece.
The omega-3 polyunsaturated fatty acids (PUFAs) Docosahexaenoic acid (DHA) and Eicosapentaenoic acid (EPA) exert multiple cardioprotective effects, influencing inflammation, platelet activation, endothelial function and lipid metabolism, besides their well-established triglyceride lowering properties. It is not uncommon for omega-3 PUFAs to be prescribed for hypertriglyceridemia, alongside antiplatelet therapy in cardiovascular disease (CVD) patients. In this regard, we studied the effect of EPA and DHA, in combination with antiplatelet drugs, in platelet aggregation and P-selectin and αβ membrane expression.
View Article and Find Full Text PDFPlatelets
December 2024
Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic.
Platelet aggregation is a complicated process mediated by different signaling pathways. As the process is highly complex and apparently redundant, the relationships between these pathways are not yet fully known. The aim of this project was to study the interconnections among seven different aggregation pathways in a group of 53 generally healthy volunteers aged 20 to 66 years.
View Article and Find Full Text PDFSemin Thromb Hemost
July 2023
Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic.
The process of platelet aggregation is often influenced by several factors including sex and age. A literature review confirmed the existence of sex-related differences in platelet aggregation. Although 68 out of 78 papers found such differences, there are still some controversies regarding these differences, which can be due to multiple factors (age, trigger, concomitant disease, sample handling, etc.
View Article and Find Full Text PDFBiotechnol Lett
December 2020
State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
The enantiomers of (4R/S)-4-hydroxy-N, N-diphenyl-2-pentynamide are key chiral synthons for the synthesis of thrombin receptor antagonists such as vorapaxar. In this paper, we report the enzymatic preparation of enantiomerically enriched (4R)-4-hydroxy-N, N-diphenyl-2-pentynamide using lipase A from Burkholderia cepacia ATCC 25416 as the catalyst. First, the lipase gene (lipA) and its chaperone gene (lipB) was cloned and expressed in Escherichia coli system.
View Article and Find Full Text PDFArterioscler Thromb Vasc Biol
August 2020
From the Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill (D.S.P., W.B.).
Objective: Platelets are critical to the formation of a hemostatic plug and the pathogenesis of atherothrombosis. Preclinical animal models, especially the mouse, provide an important platform to assess the efficacy and safety of antiplatelet drugs. However, these studies are limited by inherent differences between human and mouse platelets and the species-selectivity of many drugs.
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