Structure-activity relationship of a series of diaminoalkyl substituted benzimidazole as neuropeptide Y Y1 receptor antagonists |
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| Authors: | Zarrinmayeh H Zimmerman D M Cantrell B E Schober D A Bruns R F Gackenheimer S L Ornstein P L Hipskind P A Britton T C Gehlert D R |
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| Affiliation: | Eli Lilly and Company, Lilly Research Laboratories, Lilly Corporate Center, Indianapolis, IN 46285, USA. |
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| Abstract: | 
A series of benzimidazoles (4) was synthesized and evaluated in vitro as potent and selective NPY Y1 receptor antagonists. Substitution of the piperidine nitrogen of 4 with appropriate R groups resulted in compounds with more than 80-fold higher affinity at the Y receptor compared to the parent compound 5 (R = H). The most potent benzimidazole in this series was 21 (Ki = 0.052 nM). |
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