An easy synthesis of 5-functionally substituted ethyl 4-amino-1-aryl- pyrazolo-3-carboxylates: interesting precursors to sildenafil analogues

3-Oxo-2-arylhydrazononitriles 1a-c react readily with chloroacetonitrile, ethyl chloroacetate, and with phenacyl chloride to give 4-aminopyrazoles 4a-e. The pyrazolo[4,3-d]pyrimidine derivatives 7 and 10 are synthesized via reaction of the aminopyrazole 4b with phenylisothiocyanate and DMFDMA/NH(4)O...

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Detalles Bibliográficos
Autores principales: Ghozlan, Said A S, Badahdah, Khadija O, Abdelhamid, Ismail A
Formato: Texto
Lenguaje:English
Publicado: Beilstein-Institut 2007
Materias:
Full Research Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1885264/
https://www.ncbi.nlm.nih.gov/pubmed/17470302
http://dx.doi.org/10.1186/1860-5397-3-15

Internet

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1885264/
https://www.ncbi.nlm.nih.gov/pubmed/17470302
http://dx.doi.org/10.1186/1860-5397-3-15

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