- A novel class of cycloalkano[b]pyridines as potent and orally active opioid receptor-like 1 antagonists with minimal binding affinity to the hERG K + channel
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A series of compounds based on 7-{[4-(2-methylphenyl)piperidin-1-yl]methyl} -6,7,8,9-tetrahydro-5H-cyclohepta[b]pyridine-9-ol ((-)-8b), a potent and selective opioid receptor-like 1 (ORL1) antagonist, was prepared and evaluated using structure-activity relationship studies with the aim of removing its affinity to human ether-a-go-go related gene (hERG) K+ channel. From these studies, 101 was identified as an optimized structure with respect to ORL1 antagonist activity, and affinity to the hERG K+channel. Furthermore, 101 showed good in vivo antagonism with a wide therapeutic index in regards to adverse cardiovascular effects.
- Yoshizumi, Takashi,Takahashi, Hirobumi,Miyazoe, Hiroshi,Sugimoto, Yuichi,Tsujita, Tomohiro,Kato, Tetsuya,Ito, Hirokatsu,Kawamoto, Hiroshi,Hirayama, Mioko,Ichikawa, Daisuke,Azuma-Kanoh, Tomoko,Ozaki, Satoshi,Shibata, Yoshihiro,Tani, Takeshi,Chiba, Masato,Ishii, Yasuyuki,Okuda, Shoki,Tadano, Kiyoshi,Fukuroda, Takahiro,Okamoto, Osamu,Ohta, Hisashi
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supporting information; experimental part
p. 4021 - 4029
(2009/05/26)
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- CYCLOALKANOPYRIDINE DERIVATIVE
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Provided are cycloalkanopyridine derivatives of formula [I]: [wherein the symbols are the same as those stated in the description]. The compounds act as a nociceptin receptor antagonist, and are useful as medicines for diseases associated with a nociceptin receptor, for example, as a reliever against tolerance to a narcotic analgesic; a reliever against dependence on or addiction to a narcotic analgesic; an analgesic enhancer; an antiobesitic or appetite suppressor; a treating or prophylactic agent for cognitive impairment and dementia/amnesia; an agent for treating developmental cognitive abnormality; a remedy for schizophrenia; an agent for treating neurodegenerative diseases; an anti-depressant or treating agent for affective disorder; a treating or prophylactic agent for diabetes insipidus; a treating or prophylactic agent for polyuria; or a remedy for hypotension.
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