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Elsevier, Journal of Fluorine Chemistry, (167), p. 184-191, 2014

DOI: 10.1016/j.jfluchem.2014.07.010

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Pyrazoles with a “click” 4-[N-(4-fluorobutyl)-1,2,3-triazole] substituent in position 3 are nanomolar CB1 receptor ligands

This paper is available in a repository.
This paper is available in a repository.

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Abstract

Replacement of the 3-carbonylaminopiperidine substitutent with a “click” 4-[N-(4-fluorobutyl)-(1,2,3-triazolyl)] group in Rimonabant-type pyrazoles produced a novel class of nanomolar CB1 receptor ligands. Molecule 1d is the most promising lead with a Ki = 23 nM for CB1, which is very close to that displayed by Rimonabant (SR141716), and fairly good CB1/CB2 selectivity (Ki CB2/Ki CB1 = 35.5), thus representing a promising candidate for [18F]radiolabeling and PET Imaging studies of the CB1 receptor.