series of novel pyrazolo[3,4-d]pyrimidin-4-one derivatives were synthesized and evaluated for their anti-phosphodiesterase-5 (PDE-5) activity. A total of 28 compounds, containing alkyl and aryl groups at the 1-N and 3-C positions on the pyrazole ring, and also bearing different alkyl substituents on the piperazine ring were synthesized. Four compounds (4d, 5d, 6d, and 5o) were found to have better
作者:P. Giori、A. C. Veronese、C. B. Vicentini、M. Guarneri
DOI:10.1002/jhet.5570220434
日期:1985.7
Aryl and t-butylhydrazines react with 2-cyano-3-ethoxythiocrotonamide affording 2-cyano-3-aryl-t-butylhy-drazinothiocrotonamides. These intermediates can be easily cyclized to 4-thiocarbamoyl-5-aminopyrazoles by heating a few minutes in a strong base. Alkylhydrazines react with 2-cyano-3-ethoxythiocrotonamide yielding directly a mixture of the cyclized compounds 4-cyano-5-aminopyrazoles and 4-thio
6-heterocyclyl pyrazolo [3,4-d]pyrimidin-4-ones and compositions and
申请人:Sterling Winthrop Inc.
公开号:US05294612A1
公开(公告)日:1994-03-15
Novel 6-heterocyclyl-pyrazolo[3,4-d]pyrimidin-4-ones, useful in treating cardiovascular disease, are prepared by reacting a 5-amino-1H-pyrazole-4-carboxamide with heterocyclylcarboxaldehyde or by reacting a 5-amino-1H-pyrazole-4-carbonitrile with a heterocyclylcarboxamidine, followed by diazotization and hydrolysis of the resulting 4-amino-6-heterocyclyl-pyrazolo[3,4-d]pyrimidine.
[EN] HCV INHIBITING BI-CYCLIC PYRIMIDINES<br/>[FR] PYRIMIDINES BICYCLIQUES INHIBANT LE VHC
申请人:TIBOTEC PHARM LTD
公开号:WO2006035061A1
公开(公告)日:2006-04-06
The present invention relates to the use of bi-cyclic pyrimidines as inhibitors of HCV replication as well as their use in pharmaceutical compositions aimed to treat or combat HCV infections. In addition, the present invention relates to processes for preparation of such pharmaceutical compositions. The present invention also concerns combinat ions of the present bi-cyclic pyrimidines with other anti-HCV agents.
Bicyclicpyrimidones and their use to treat diseases
申请人:——
公开号:US20040242596A1
公开(公告)日:2004-12-02
The present invention is directed to dihydropyrimidones having formula I or II and methods of using them to induce mitotic arrest, thereby making them useful as anti-cancer agents and other diseases that can be treated by inducing mitotic arrest.
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