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Ticagrelor

Ticagrelor.

General Information:

Ticagrelor is an oral antiplatelet drug that is used with low dose aspirin to decrease the risk of myocardial infarction and stroke in patients with acute coronary syndromes. Ticagrelor has been linked to rare instances of hypersensitivity reactions accompanied by mild liver injury.Ticagrelor is a triazolopyrimidine that is an adenosine isostere; the cyclopentane ring is similar to ribose and the nitrogen-rich [1,2,3]triazolo[4,5-d]pyrimidine moiety resembles the nucleobase adenine. A platelet aggregation inhibitor which is used for prevention of thromboembolic events in patients with acute coronary syndrome. It has a role as a platelet aggregation inhibitor and a P2Y12 receptor antagonist. It is a member of triazolopyrimidines, an organofluorine compound, an aryl sulfide, a secondary amino compound and a hydroxyether.

 

Therapeutic Category

The drug falls under the therapeutic category of Anti – Coagulants.

Product Characteristics:

IUPAC Name:

(1S,2S,3R,5S)-3-[7-[[(1R,2S)-2-(3,4-difluorophenyl)cyclopropyl]amino]-5-propylsulfanyltriazolo[4,5-d]pyrimidin-3-yl]-5-(2-hydroxyethoxy)cyclopentane-1,2-diol

Molecular Weight:

522.6 g/mol

Molecular Formula:

C23H28F2N6O4S

Molecular Structure:


Mechanism of Action:

Ticagrelor, a cyclopentyltriazolopyrimidine derivative, is a nonthienopyridine, P2Y12 platelet adenosine diphosphate (ADP)-receptor antagonist. In contrast to the thienopyridines (e.g., clopidogrelprasugrel), ticagrelor binds reversibly to the P2Y12 ADPreceptor and does not require hepatic transformation to exert its pharmacologic effect. Ticagrelor exhibits noncompetitive and reversible binding to the P2Y12 platelet ADP receptor, preventing signal transduction of the cyclic adenosine monophosphate (cAMP) pathway. This results in reduced exposure of fibrinogen binding sites to the platelet glycoprotein (GP) IIb/IIIa complex and subsequent inhibition of platelet activation and aggregation. In addition to platelet ADP-receptor blockade, ticagrelor inhibits reuptake of adenosine into erythrocytes, a mechanism that may account for some of the beneficial cardiovascular effects of the drug, while potentially contributing to some of its adverse effects (e.g., dyspnea, ventricular pauses).