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Volumn 23, Issue 7, 2013, Pages 2212-2216

Synthesis, structure-activity relationship studies, and identification of novel 5,6,7,8-tetrahydroimidazo[1,5-a]pyrazine derivatives as dual orexin receptor antagonists. Part 1

Author keywords

5,6,7,8 Tetrahydroimidazo 1,5 a pyrazine; G protein coupled receptors; Neuropeptides; Orexin receptors; Sleep

Indexed keywords

5,6,7,8 TETRAHYDROIMIDAZO[1,5 A]PYRAZINE DERIVATIVE; ALMOREXANT; IMIDAZOLE DERIVATIVE; OREXIN 1 RECEPTOR; OREXIN 2 RECEPTOR; OREXIN RECEPTOR ANTAGONIST; PYRAZOLO TETRAHYDROPYRIDINE DERIVATIVE; RECEPTOR BLOCKING AGENT; TETRAHYDROISOQUINOLINE; UNCLASSIFIED DRUG;

EID: 84875219067     PISSN: 0960894X     EISSN: 14643405     Source Type: Journal    
DOI: 10.1016/j.bmcl.2013.01.088     Document Type: Article
Times cited : (11)

References (34)
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    • For recent reviews on the medicinal chemistry of orexin antagonists
    • For recent reviews on the medicinal chemistry of orexin antagonists: A.J. Roecker, and P.J. Coleman Curr. Top. Med. Chem. 8 2008 977
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    • 2R.
    • 2R.
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    • 84875211125 scopus 로고    scopus 로고
    • Previous structure-activity relationship studies in the tetrahydroisoquinoline and pyrazolo-tetrahydropyridine series have indicated that two substituents are mandatory for the aryl or heterocycle moiety in order to reach potent affinities with both orexin receptors. Imidazoles were considered as a valuable heterocyclic replacement for the dimethoxyphenyl moiety due to the fact that they can be conveniently disubstituted, and the versatile chemistry of imidazoles allows the introduction of diverse substituents having different electronic properties.
    • Previous structure-activity relationship studies in the tetrahydroisoquinoline and pyrazolo-tetrahydropyridine series have indicated that two substituents are mandatory for the aryl or heterocycle moiety in order to reach potent affinities with both orexin receptors. Imidazoles were considered as a valuable heterocyclic replacement for the dimethoxyphenyl moiety due to the fact that they can be conveniently disubstituted, and the versatile chemistry of imidazoles allows the introduction of diverse substituents having different electronic properties.
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    • 84875219974 scopus 로고    scopus 로고
    • 2-Substituted imidazoles 1 used for the investigations are either commercially available or specifically synthesized (Scheme 3). Substituents R corresponding to these 2-substituted imidazoles 1 are listed in Table 2.
    • 2-Substituted imidazoles 1 used for the investigations are either commercially available or specifically synthesized (Scheme 3). Substituents R corresponding to these 2-substituted imidazoles 1 are listed in Table 2.
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    • Polyhalogenated imidazoles undergo halogen/magnesium or halogen/lithium exchange in a specific sequence (C2 > C5 > C4), under the appropriate reaction conditions
    • Polyhalogenated imidazoles undergo halogen/magnesium or halogen/lithium exchange in a specific sequence (C2 > C5 > C4), under the appropriate reaction conditions: B. Iddon, and B.L. Lim J. Chem. Soc., Perkin Trans. 1 4 1983 735
    • (1983) J. Chem. Soc., Perkin Trans. 1 , vol.4 , pp. 735
    • Iddon, B.1    Lim, B.L.2
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    • 78650166294 scopus 로고    scopus 로고
    • For recent reviews on Pictet-Spengler reaction
    • For recent reviews on Pictet-Spengler reaction: K. Pulka Curr. Opin. Drug Discov. Dev. 13 2010 669
    • (2010) Curr. Opin. Drug Discov. Dev. , vol.13 , pp. 669
    • Pulka, K.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.