Benzamil
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| Benzamil | |
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| IUPAC name | 3,5-diamino-N-[(1E)- amino(benzylamino)methylidene]- 6-chloropyrazine-2-carboxamide |
| Identifiers | |
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| MeSH | |
| SMILES | Clc2nc(C(=O)\N=C(/N)NCc1ccccc1)c(N)nc2N |
| Properties | |
| Molecular formula | C13H14ClN7O |
| Molar mass | 319.75 g/mol |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Benzamil or benzyl amiloride is a sodium-calcium exchange blocker.[1][2] It is a potent analog of amiloride, and is marketed as the hydrochloride salt (benzamil hydrochloride). As amiloride, benzamil has been studied as a possible treatment for cystic fibrosis,[3] although with disappointing results.[4]
[edit] Structure
Benzamil is a benzyl group-containing analog of amiloride. Like amiloride, it is a guanidinium group-containing pyrazine derivative.
[edit] Mechanism of action
Benzamil is closly related to amiloride. By adding the benzyl group to the nitrogen of the guanidinium group the activity is increased several hundred-fold.[5]
Amiloride works by directly blocking the epithelial sodium channel (ENaC) thereby inhibiting sodium reabsorption in the distal convoluted tubules and collecting ducts in the kidneys (this mechanism is the same for triamterene). This promotes the loss of sodium and water from the body, but without depleting potassium.
[edit] References
- ^ Gomez-Sanchez, E. P.; Gomez-Sanchez C. E. (Sep 1995). "Effect of central infusion of benzamil on Dahl S rat hypertension". Am J Physiol (269(3 Pt 2)): H1044-7. PMID 7573500.
- ^ Lee, Y. S.; Sayeed, M. M. : Wurster, R. D. (6). "Intracellular Ca2+ mediates the cytotoxicity induced by bepridil and benzamil in human brain tumor cells.". : Cancer Letters 88 (1): 87–91. ISSN 0304-3835.
- ^ Rodgers HC, Knox AJ (September 1999). "The effect of topical benzamil and amiloride on nasal potential difference in cystic fibrosis". Eur. Respir. J. 14 (3): 693–6. PMID 10543294.
- ^ Hirsh AJ, Sabater JR, Zamurs A, et al (December 2004). "Evaluation of second generation amiloride analogs as therapy for cystic fibrosis lung disease". J. Pharmacol. Exp. Ther. 311 (3): 929–38. doi:. PMID 15273255.
- ^ Kleyman, T. R.; Cragoe E. J. Jr. (Oct 1988). "Amiloride and its analogs as tools in the study of ion transport". J Membr Biol 105 (1): 1–21. PMID 2852254.
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