173334-57-1 Categories: , ,
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Product Details:

  • Product Name: Aliskiren
  • CAS #: 173334-57-1
  • Mode of Action:

    Renin is secreted by the kidney in response to decreases in blood volume and renal perfusion. Renin cleaves angiotensinogen to form the inactive decapeptide angiotensin I (Ang I). Ang I is converted to the active octapeptide angiotensin II (Ang II) by ACE and non‐ACE pathways. Ang II is a powerful vasoconstrictor and leads to the release of catecholamines from the adrenal medulla and prejunctional nerve endings. It also promotes aldosterone secretion and sodium reabsorption. Together, these effects increase blood pressure. Ang II also inhibits renin release, thus providing a negative feedback to the system. This cycle, from renin through angiotensin to aldosterone and its associated negative feedback loop, is known as the renin‐angiotensin‐aldosterone system (RAAS). Aliskiren is a direct renin inhibitor, decreasing plasma renin activity (PRA) and inhibiting the conversion of angiotensinogen to Ang I. Whether aliskiren affects other RAAS components, e.g., ACE or non‐ACE pathways, is not known. All agents that inhibit the RAAS, including renin inhibitors, suppress the negative feedback loop, leading to a compensatory rise in plasma renin concentration. When this rise occurs during treatment with ACEIs and ARBs, the result is increased levels of PRA. During treatment with aliskiren, however, the effect of increased renin levels is blocked so that PRA, Ang I and Ang II are all reduced, whether aliskiren is used as monotherapy or in combination with other antihypertensive agents.

  • Pharmacodynamics:

    In placebo controlled clinical trials, plasma renin activity (PRA) was decreased in a range of 50% to 80%. This reduction in PRA was not dose‐related and did not correlate with blood pressure reductions. The clinical implications of the differences in effect on PRA are not known.

  • Metabolism:

    Approximately 80% of the drug in plasma following oral administration is unchanged. Cytochrome P450 (CYP) 3A4 oxidation produces two major metabolites that account for approximately 5% of the drug in plasma. Aliskiren is eliminated primarily through the biliary/fecal route as unchanged drug and, to a lesser extent, via oxidative metabolism via CYP3A4. Only 0.6% of the oral dose is recovered in urine.

  • Toxicity:

    The most likely manifestation of overdosage would be hypotension.

  • ATC: C09XA02
  • DrugBank: DB09026
  • Formula: C30-H53-N3-O6
  • Molecular Mass: 551.7637
  • Synonyms: (2S,4S,5S,7S)-5-Amino-N-(2-carbamoyl)-2-methylpropyl)-4-hydroxy-2-isopropyl-7-(4-methoxy-3-(3-methoxypropoxy)benzyl)-8-methylnonamide, Aliskiren, CGP 60536, CGP60536B, Enviage, HSDB 7843, Rasilez, Riprazo, SPP 100, SPP100, Sprimeo, UNII-502FWN4Q32
  • SMILES: CC(C)[C@@H](Cc1ccc(c(c1)OCCCOC)OC)C[C@@H]([C@H](C[C@H](C(C)C)C(=O)NCC(C)(C)C(=O)N)O)N
  • InChl: 1S/C30H53N3O6/c1-19(2)22(14-21-10-11-26(38-8)27(15-21)39-13-9-12-37-7)16-24(31)25(34)17-23(20(3)4)28(35)33-18-30(5,6)29(32)36/h10-11,15,19-20,22-25,34H,9,12-14,16-18,31H2,1-8H3,(H2,32,36)(H,33,35)/t22-,23+,24-,25-/m0/s1
  • General Reference:

    1. Vaidyanathan S, Jarugula V, Dieterich HA, Howard D, Dole WP: Clinical pharmacokinetics and pharmacodynamics of aliskiren. Clin Pharmacokinet. 2008;47(8):515-31. Pubmed
    2. Gradman AH, Schmieder RE, Lins RL, Nussberger J, Chiang Y, Bedigian MP: Aliskiren, a novel orally effective renin inhibitor, provides dose-dependent antihypertensive efficacy and placebo-like tolerability in hypertensive patients. Circulation. 2005 Mar 1;111(8):1012-8. Epub 2005 Feb 21. Pubmed
    3. Staessen JA, Li Y, Richart T: Oral renin inhibitors. Lancet. 2006 Oct 21;368(9545):1449-56. Pubmed

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