Synthesis and structure-activity relationships of pyrazolo[4,3-d]pyrimidin-7-ones as adenosine receptor antagonists
作者:Harriet W. Hamilton、Daniel F. Ortwine、Donald F. Worth、James A. Bristol
DOI:10.1021/jm00384a016
日期:1987.1
5-substituted pyrazolo[4,3-d]pyrimidines that were synthesized during the course of the analysis. With use of the correlation as a guide, one additional 5-phenylpyrazolo[4,3-d]pyrimidine containing a 4-[[(dimethylamino)ethyl]amino]sulfonyl substituent to improve aqueous solubility was prepared. On the basis of the high correlation between adenosinebinding affinities of analogously substituted xanthines and pyrazolo-[4
Reduction of aromatic nitrocompounds by sodium borohydride in methanol in the presence of sodium methoxide
作者:Jerzy Suwiński、Pawel Wagner、Elizabeth M. Holt
DOI:10.1016/0040-4020(96)00491-7
日期:1996.7
The paper presents the results of the reduction of 4-nitroimidazoles, 4-nitropyrazoles and 3-nitropyridines by sodiumborohydride or sodium borodeuteride in methanol in the presence of sodium methoxide, 1-Substituted 4-nitroimidazoles yield oximes of 4-imidazolidinones, the nitropyrazoles and nitropyridines yield respective azoxy compounds. The reaction mechanism proposed in the work makes allowances
Imidazo(1,2-c)pyrazolo(3,4-e)pyrimidines and their production
申请人:WARNER-LAMBERT COMPANY
公开号:EP0095289A2
公开(公告)日:1983-11-30
Alkylimidazo[1,2-c]pyrazolo[3,4-e]pyrimidines and pharmaceutically acceptable salts are described. These compounds are useful as antipsychotic agents; processes for their preparation, and pharmaceutical compositions which contain them are also described.
Alkylimidazo[1,2-c]pyrazolo[3,4-e]pyrimidines and pharmaceutically acceptable salts are described. These compounds are antipsychotic agents. Methods for their preparation, pharmaceutical compositions which contain them and methods for using said compositions are also described.
Substituierte Tetraazatricyclen, Verfahren zu ihrer Herstellung und ihre Verwendung
申请人:Byk Gulden Lomberg Chemische Fabrik GmbH
公开号:EP0064775A1
公开(公告)日:1982-11-17
Substituierte Pyrazolobenzodiazepinone der allgemeinen Formel
worin R1 einen Alkylrest mit 1 bis 4 Kohlenstoffatomen, R2 ein Wasserstoffatom oder einen Alkylrest mit 1 bis 4 Kohlenstoffatomen, R3 ein Wasserstoffatom oder die Gruppe -CO-A-R4, R4 ein Halogenatom und A eine geradkettige oder verzweigte Alkylengruppe mit 1 bis 5 Kohlenstoffatomen bedeuten, und ihre Säureadditionssalze sind neue Verbindungen. Sie stellen Zwischenprodukte dar. Verfahren zur Herstellung der neuen Verbindungen sowie der Zwischenprodukte werden angegeben.