The invention relates to compounds of formula (I), optionally radiolabelled with a radionuclide, and pharmaceutically acceptable salts, solvates, tautomers, N-oxides, stereoisomers and/or polymorphs thereof. Also disclosed are methods of using the compounds of formula (I) for detecting translocator protein (18 kDa) (TSPO). Further disclosed are methods of using the compounds of formula (I) for diagnosing and/or treating a disease, disorder or condition associated with TSPO.
The invention relates to compounds of formula (I), optionally radiolabelled with a radionuclide, and pharmaceutically acceptable salts, solvates, tautomers, N-oxides, stereoisomers and/or polymorphs thereof. Also disclosed are methods of using the compounds of formula (I) for detecting translocator protein (18 kDa) (TSPO). Further disclosed are methods of using the compounds of formula (I) for diagnosing and/or treating a disease, disorder or condition associated with TSPO.
Condensation of 5(3)-amino-3(5)-arylpyrazoles with 4-hydroxy-6-methylpyran-2-one leads to 5,7-dimethyl-2-arylpyrazolo[1,5-a]pyrimidines, 5-alkoxycarbonylmethyl-7-methyl-2-arylpyrazolo[1,5-a]pyrimidines and their isomeric 7-alkoxycarbonylmethyl-5-methyl-2-arylpyrazolo[1,5-a]pyrimidines. These compounds result from competitive reactions and from different cyclization pathways. Structure and mechanism of formation of these new products are reported. (C) 2011 Elsevier Ltd. All rights reserved.