| Autor: |
Kim MS; Laboratory of Medicinal Chemistry, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Korea., Ryu H, Kang DW, Cho SH, Seo S, Park YS, Kim MY, Kwak EJ, Kim YS, Bhondwe RS, Kim HS, Park SG, Son K, Choi S, DeAndrea-Lazarus IA, Pearce LV, Blumberg PM, Frank R, Bahrenberg G, Stockhausen H, Kögel BY, Schiene K, Christoph T, Lee J |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of medicinal chemistry [J Med Chem] 2012 Oct 11; Vol. 55 (19), pp. 8392-408. Date of Electronic Publication: 2012 Sep 20. |
| DOI: |
10.1021/jm300780p |
| Abstrakt: |
A series of N-(2-amino-6-trifluoromethylpyridin-3-ylmethyl)-2-(3-fluoro-4-methylsulfonylaminophenyl)propanamides were designed combining previously identified pharmacophoric elements and evaluated as hTRPV1 antagonists. The SAR analysis indicated that specific hydrophobic interactions of the 2-amino substituents in the C-region of the ligand were critical for high hTRPV1 binding potency. In particular, compound 49S was an excellent TRPV1 antagonist (K(i(CAP)) = 0.2 nM; IC(50(pH)) = 6.3 nM) and was thus approximately 100- and 20-fold more potent, respectively, than the parent compounds 2 and 3 for capsaicin antagonism. Furthermore, it demonstrated strong analgesic activity in the rat neuropathic model superior to 2 with almost no side effects. Compound 49S antagonized capsaicin induced hypothermia in mice but showed TRPV1-related hyperthermia. The basis for the high potency of 49S compared to 2 is suggested by docking analysis with our hTRPV1 homology model in which the 4-methylpiperidinyl group in the C-region of 49S made additional hydrophobic interactions with the hydrophobic region. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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