Wielgosz-Collin G, Duflos M, Pinson P, Le Baut G, Renard P, Bennejean C, Boutin J, Boulanger M. 8-Amino-5-nitro-6-phenoxyquinolines: potential non-peptidic neuropeptide Y receptor ligands.
J Enzyme Inhib Med Chem 2002;
17:449-53. [PMID:
12683683 DOI:
10.1080/1475636021000005758]
[Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
The synthesis and pharmacological evaluation of analogues of PD 160170, a neuropeptide Y1 (NPY) receptor antagonist are reported. Phamacomodulation of this 8-amino-5-nitro-6-phenylsulfonylquinoline was carried out by replacing the sulfone moiety by oxygen. The corresponding ethers 11-16 were obtained by nucleophilic substitution of 8-acetamido-6-chloro-5-nitroquinoline 4 with phenols, followed by acidic hydrolysis of the intermediary amides 5-10. The test compounds 11-16 exerted no appreciable Y1 activity and they were also inactive in terms of Y5 receptor binding; their IC50 values were >1 microM and 10 microM, respectively. The dramatic decrease in potency resulting from replacement of the sulfone function by an ether was confirmed by IP administration of 16 to ob/ob mice; after a 4-day administration, no decrease in food consumption or weight was observed.
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