Synthesis of derivatives of the new heterocyclic system pyrimido[5′,4′:5,6]pyrido[3,2-b]indole
✍ Scribed by S. Yu. Ryabova; L. M. Alekseeva; N. S. Masterova; V. G. Granik
- Publisher
- Springer
- Year
- 2007
- Tongue
- English
- Weight
- 455 KB
- Volume
- 56
- Category
- Article
- ISSN
- 1573-9171
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## Abstract A new bridgehead nitrogen hetero‐ cycle viz. 11‐carboethoxy‐9‐oxo‐pyrimido[3′2′:3,4]‐1,2,4‐triazino[5,6‐b]indole **3** has been synthesized from 3‐azido‐5H‐1,2,4‐triazino[5,6‐b]indole **2** by its reaction with diethyl fumerate. The intermediate **2** was obtained by treating 3‐hydrazin