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Synthesis and Anticonvulsant Activity of Pyrano[4′,3′:4,5]pyrido[2,3-b]furo[3,2-d]pyrimidine and Pyrano[4′,3′:4,5]pyrido[2,3-b]furo[3,2-d]pyridine Derivatives

✍ Scribed by E. G. Paronikyan; A. Kh. Oganisyan; A. S. Noravyan; R. G. Paronikyan; I. A. Dzhagatspanyan


Book ID
110406070
Publisher
Springer
Year
2002
Tongue
English
Weight
71 KB
Volume
36
Category
Article
ISSN
0091-150X

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Ring closure reactions of pyrido[2,3-d]p
✍ Dang Van Tinh; Wolfgang Stadlbauer 📂 Article 📅 2008 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 419 KB

## Abstract magnified image The cyclocondensation of 5‐hydroxy‐pyrido[2,3‐__d__]pyrimidines **1** with malonates gives pyrano[2′,3′:4,5]‐pyrido[2,3‐__d__]pyrimidines **2**. Nitration of **1** and reduction with zinc in the presence of carboxylic acids/anhydrides gave 2‐alkyloxazolo[5′,4′:4,5]pyrid