Abstract:
:A set of 30 substituted 5,5'-diphenyl-2-thioxoimidazolidin-4-one (thiohydantoins) derivatives was synthesized, and their affinity for the human CB(1) cannabinoid receptor has been evaluated. These compounds are derived from the previously described cannabinoid ligands 5,5'-diphenylimidazolidine-2,4-dione (hydantoins). The replacement of the oxygen by a sulfur leads to an increase of the affinity while the function-i.e., inverse agonism-determined by [(35)S]GTPgammaS experiments remains unaffected. Finally, to evaluate the molecular parameters that could influence the affinity of the thiohydantoins, molecular electrostatic potential as well as lipophilicity calculations were undertaken on representative thiohydantoins and hydantoins derivatives. In conclusion, 5,5'-bis-(4-iodophenyl)-3-butyl-2-thioxoimidazolidin-4-one (31) and 3-allyl-5,5'-bis(4-bromophenyl)-2-thioxoimidazolidin-4-one (32) possess the highest affinity for the CB(1) cannabinoid receptor described to date for the hydantoin and thiohydantoins series when compared in a same bioassay.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Muccioli GG,Martin D,Scriba GK,Poppitz W,Poupaert JH,Wouters J,Lambert DMdoi
10.1021/jm049263kkeywords:
subject
Has Abstractpub_date
2005-04-07 00:00:00pages
2509-17issue
7eissn
0022-2623issn
1520-4804journal_volume
48pub_type
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