Regioselectivity of glycosylation reaction of 4,6-BIS(methylthio)-pyrazolo-[3,4-d] pyrimidine with D-xylofuranosyl- and D-glucofuranosyl sugars
✍ Scribed by K. Avasthi; K. Deo; Neeraj Garg; D.S. Bhakuni
- Book ID
- 108477079
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 257 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0960-894X
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## Osnabriick (25.11.93
## Abstract Pyrazolo‐[3,4‐__d__]pyrimidine‐4,6‐diones **5** and pyrazolo[4,3‐__d__]pyrimidine‐5,7‐diones **7** were synthesized by Curtius rearrangement of pyrazolic mono‐esters **2** and **3** followed by hetero‐cyclization __via__ the ureas derivatives **4** and **6** under alkaline conditions.
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