N-[6-(2-hydroxyethoxy)-5-(2-methoxyphenoxy)-2-[2-(2H-tetrazol-5-yl)pyridin-4-yl]pyrimidin-4-yl]-5-propan-2-ylpyridine-2-sulfonamide

Names

[ Name ]:
N-[6-(2-hydroxyethoxy)-5-(2-methoxyphenoxy)-2-[2-(2H-tetrazol-5-yl)pyridin-4-yl]pyrimidin-4-yl]-5-propan-2-ylpyridine-2-sulfonamide

[Synonym ]:
N-[6-(2-Hydroxyethoxy)-5-(o-methoxyphenoxy)-2-[2-(1H-tetrazol-5-yl)-4-pyridyl]-4-pyrimidinyl]-5-isopropyl-2-pyridinesulfonamide
tezosentan
2-pyridinesulfonamide, N-[6-(2-hydroxyethoxy)-5-(2-methoxyphenoxy)-2-[2-(1H-tetrazol-5-yl)-4-pyridinyl]-4-pyrimidinyl]-5-(1-methylethyl)-
N-{6-(2-hydroxyethoxy)-5-(2-methoxyphenoxy)-2-[2-(1H-tetrazol-5-yl)pyridin-4-yl]pyrimidin-4-yl}-5-(propan-2-yl)pyridine-2-sulfonamide
2-Pyridinesulfonamide, N-[6-(2-hydroxyethoxy)-5-(2-methoxyphenoxy)-2-[2-(2H-tetrazol-5-yl)-4-pyridinyl]-4-pyrimidinyl]-5-(1-methylethyl)-
N-{6-(2-Hydroxyethoxy)-5-(2-methoxyphenoxy)-2-[2-(1H-tetrazol-5-yl)-4-pyridinyl]-4-pyrimidinyl}-5-isopropyl-2-pyridinesulfonamide
N-{6-(2-hydroxyethoxy)-5-(2-methoxyphenoxy)-2-[2-(2H-tetrazol-5-yl)pyridin-4-yl]pyrimidin-4-yl}-5-(propan-2-yl)pyridine-2-sulfonamide
2-Pyridinesulfonamide,N-(6-(2-hydroxyethoxy)-5-(2-methoxyphenoxy)-2-(2-(1H-tetrazol-5-yl)-4-pyridinyl)-4-pyrimidinyl)-5-(1-methylethyl)
N-{6-(2-Hydroxyethoxy)-5-(2-methoxyphenoxy)-2-[2-(2H-tetrazol-5-yl)pyridin-4-yl]pyrimidin-4-yl}-5-isopropylpyridine-2-sulfonamide
Tezosentan [INN]
N-(6-(2-Hydroxyethoxy)-5-(2-methoxyphenoxy)-2-(2-(1H-tetrazol-5-yl)-4-pyridinyl)-4-pyrimidinyl)-5-(1-methylethyl)-2-pyridinesulfonamide

Biological Activity

[Description]:

Tezosentan (RO 610612) is an endothelin (ET) receptor antagonist, with pA2s of 9.5, 7.7 for ETA and ETB receptors, respectively.

[Related Catalog]:

Signaling Pathways >> GPCR/G Protein >> Endothelin Receptor

Research Areas >> Neurological Disease

Research Areas >> Cancer

Research Areas >> Cardiovascular Disease

[Target]

ETA:9.5 (pA2)

ETB:7.7 (pA2)

[In Vitro]

Affinity of Tezosentan for the ET receptors is assessed in different cells and tissues. Tezosentan inhibits the specific 125I-labeled ET-1 binding to ETA receptors with an inhibitory potency (Ki) of 0.3 nM on CHO cells and of 18 nM on membranes of baculovirus-infected insect cells. Similarly, Tezosentan inhibits the specific binding of 125I-labeled ET-1, ET-3, or sarafotoxin S6c to ETB receptors with an inhibitory affinity of 10 to 21 nM. Tezosentan up to a concentration of 1 μM did not exhibit any binding inhibitory activity in 27 radioligand binding assays different from ET binding. On H1 central, 5-hydroxytryptamine2A, and vasopressin V1 receptors, Tezosentan (1 μM) induces a weak inhibition of less than 20%[1].

[In Vivo]

In pithed Wistar rats, Tezosentan dose-dependently inhibits the pressor effect of big ET-1 (P<0.001 at all doses). At the lowest dose tested of 1 mg/kg, Tezosentan inhibits the pressor effect of the various doses of big ET-1 by 50 to 80%. Tezosentan has no effect by itself on blood pressure in these pithed rats. Tezosentan is very effective in a rat model of acute renal failure. ET antagonists have been shown to prevent the vasoconstriction and the renal failure that follow acute renal ischemia in rats[1].

[Animal admin]

Rats[1] A pseudocrush syndrome is simulated by injection of i.m. glycerol. A control group does not receive glycerol and is used as a reference. Tezosentan or bosentan for comparison or saline as control is injected as two bolus i.v. doses of 10 mg/kg 1 h and 20 min before glycerol. Rats are allowed to recover for 2 h and then are placed in individual metabolic cages for 48 h. Blood samples withdraw from a catheter placed in the abdominal aorta and urine free of food and feces are collected at 24 and 48 h. Plasma and urinary creatinine levels are measured with a centrifugal analyzer. Renal function is assessed by calculating creatinine clearance at 24 and 48 h after glycerol administration[1].

[References]

[1]. Clozel M, et al. Pharmacology of tezosentan, new endothelin receptor antagonist designed for parenteral use. J Pharmacol Exp Ther. 1999 Aug;290(2):840-6.

[Related Small Molecules]

Chemical & Physical Properties

[ Density]:
1.4±0.1 g/cm3

[ Boiling Point ]:
761.2±70.0 °C at 760 mmHg

[ Molecular Formula ]:
C₂₇H₂₇N₉O₆S

[ Molecular Weight ]:
605.625

[ Flash Point ]:
414.2±35.7 °C

[ Exact Mass ]:
605.180481

[ PSA ]:
208.49000

[ LogP ]:
0.89

[ Vapour Pressure ]:
0.0±2.7 mmHg at 25°C

[ Index of Refraction ]:
1.634