The design, synthesis and biological activities of potent pyrazole-based tricyclic CB1 receptor antagonists (2) are described. The key synthetic step involves the ring closure of the lithiated alpha,gamma-keto ester adduct (4). The optimal nitroderivative (28) in this series exhibits a high CB1 receptor affinity (pK(i)=7.2) as well as very potent antagonistic activity (pA(2)=8.8) in vitro. The regioselectivity of the pyrazole ring closure is shown to depend strongly on the aromatic substitution pattern of the applied arylhydrazine.
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Eli Lilly & Co, Lilly Res Labs, Psychiat Drug Discovery, Indianapolis, IN 46285 USAEli Lilly & Co, Lilly Res Labs, Psychiat Drug Discovery, Indianapolis, IN 46285 USA
Witkin, JM
Tzavara, ET
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机构:Eli Lilly & Co, Lilly Res Labs, Psychiat Drug Discovery, Indianapolis, IN 46285 USA
Tzavara, ET
Davis, RJ
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机构:Eli Lilly & Co, Lilly Res Labs, Psychiat Drug Discovery, Indianapolis, IN 46285 USA
Davis, RJ
Li, X
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机构:Eli Lilly & Co, Lilly Res Labs, Psychiat Drug Discovery, Indianapolis, IN 46285 USA
Li, X
Nomikos, GG
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机构:Eli Lilly & Co, Lilly Res Labs, Psychiat Drug Discovery, Indianapolis, IN 46285 USA
机构:
Virginia Commonwealth Univ, Dept Pharmacol & Toxicol, Richmond, VA USA
Virginia Commonwealth Univ, Inst Drug & Alcohol Abuse, Richmond, VA USARTI Int, Analyt Chem & Pharmaceut, Discovery & Analyt Sci, Res Triangle Pk, NC 27709 USA
Beardsley, Patrick M.
Seltzman, Herbert H.
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RTI Int, Ctr Organ & Med Chem, Res Triangle Pk, NC USARTI Int, Analyt Chem & Pharmaceut, Discovery & Analyt Sci, Res Triangle Pk, NC 27709 USA
机构:
NanChang Univ Sch Pharmaceut Sci, Dept Med Chem, Nanchang, Peoples R ChinaNanChang Univ Sch Pharmaceut Sci, Dept Med Chem, Nanchang, Peoples R China
Tu, GuoGang
Xiong, Fang
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NanChang Univ, Affiliated Hosp 2, Dept Cardiol, Nanchang, Peoples R ChinaNanChang Univ Sch Pharmaceut Sci, Dept Med Chem, Nanchang, Peoples R China
Xiong, Fang
Huang, HuiMing
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NanChang Univ Sch Pharmaceut Sci, Dept Med Chem, Nanchang, Peoples R ChinaNanChang Univ Sch Pharmaceut Sci, Dept Med Chem, Nanchang, Peoples R China
Huang, HuiMing
Kuang, BinHai
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NanChang Univ Sch Pharmaceut Sci, Dept Med Chem, Nanchang, Peoples R ChinaNanChang Univ Sch Pharmaceut Sci, Dept Med Chem, Nanchang, Peoples R China
Kuang, BinHai
Li, ShaoHua
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NanChang Univ Sch Pharmaceut Sci, Dept Med Chem, Nanchang, Peoples R ChinaNanChang Univ Sch Pharmaceut Sci, Dept Med Chem, Nanchang, Peoples R China