Some 1,5-diaryl-3-methyl-1H-pyrazolo[4,5-c]isoquinolines were synthesized and tested for their ability to displace [3H]clonazepam or [3H]Ro 5-4864 from their specificbinding on the central and peripheralbenzodiazepine receptors. None of the tested compounds showed any activity as central binding inhibitors, while most of them were specific as peripheralbinding inhibitors, although they were not very
Reactions of pyrazoles and pyrazolium salts with complex metal hydrides and organometallic reagents. Synthesis of pyrazolines and pyrazolidines
作者:Purificación Cuadrado、Ana M. González-Nogal、Senén Martínez
DOI:10.1016/s0040-4020(97)00514-0
日期:1997.6
2-Pyrazolin-4-oximes have been synthesized by reaction of 4-nitroso- and 4-nitropyrazoles with complex metal hydrides and organometallic reagents. Furthermore, 4-nitropyrazolium tetrafluoroborates are reactive substrates towards organolithium and Grignard compounds leading to new and highly substituted 4-nitro-3-pyrazolines and 4-nitropyrazolidines. The formation of 3-pyrazolines is regioselective