Journal
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
Volume 62, Issue -, Pages 256-269Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ejmech.2012.12.056
Keywords
Cannabinoids; CB1 receptor; Fluorinated ligands; Food intake
Categories
Funding
- MIUR [DM 28141]
- Sardegna Ricerche - Sardinian Regional Council
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In spite of rimonabant's withdrawal from the European market due to its adverse effects, interest in the development of drugs based on CB1 antagonists is revamping on the basis of the peculiar properties of this class of compounds. In particular, new strategies have been proposed for the treatment of obesity and/or related risk factors through CB1, antagonists, i.e. by the development of selectively peripherally acting agents or by the identification of neutral CB1 antagonists. New compounds based on the lead 031 antagonist/inverse agonist rimonabant have been synthesized with focus on obtaining neutral CB1 antagonists. Amongst the new derivatives described in this paper, the mixture of the two enantiomers (+/-)-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-3-(2-cyclohexyl-1-hydroxyethyl)-4-methyl-1H-pyrazole ((+/-)-5), and compound 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-3-[(4-2-cyclohexyl-1-fluorovinyl]-4-methyl-1H-pyrazole ((Z)-6), showed interesting pharmacological profiles. According to the preliminary pharmacological evaluation, these novel pyrazole derivatives showed in fact both neutral CB1 antagonism behaviour and significant in vivo activity towards food intake. (C) 2013 Elsevier Masson SAS. All rights reserved.
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