## Abstract For Abstract see ChemInform Abstract in Full Text.
Synthesis of Tricyclic Pyrazolo[1,5-a]pyrimidin-7(4H)-ones Featuring Regioselective Formation of the Core Structure.
✍ Scribed by Vladislav Z. Parchinsky; Olga Ushakova; Dmitry V. Kravchenko; Mikhail Krasavin
- Publisher
- John Wiley and Sons
- Year
- 2007
- Weight
- 29 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0931-7597
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✦ Synopsis
Abstract
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## Abstract A series of new 1__H__‐pyrazolo[3,4‐__d__]pyrimidin‐4(__5H__)‐one Derivatives **5** has been designed and regio‐selectively synthesized __via__ a tandem aza‐Wittig reaction. The structures of all compounds prepared have been confirmed by ^1^H NMR, IR, EI‐MS spectroscopy and elemental an
## Abstract A general synthetic approach to pyrazolo[4,3‐__d__]pyrimidines is reported. Aldehydes, arylideneanilines, carboxylic acids and orthoesters are used as one‐carbon units for bridging the two amino functions of 4‐amino‐1‐alkyl‐3‐propylpyrazole‐5‐carboxamides.