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Synthesis of imidazo[1,2-c]pyrazolo[4,3-e]pyrimidines, pyrazolo[4,3-e]1,2,4-triazolo[1,5-c]pyrimidines and 1,2,4-triazolo[5,1-i]purines: new potent adenosine A2 receptor antagonists

✍ Scribed by F Gatta; MR Del Giudice; A Borioni; PA Borea; S Dionisotti; E Ongini


Publisher
Elsevier Science
Year
1993
Tongue
French
Weight
909 KB
Volume
28
Category
Article
ISSN
0223-5234

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1,2,3-Triazolo[4,5-e]-1,2,4-triazolo[3,4
✍ Giuliana Biagi; Irene Giorgi; Oreste Livi; Clementina Manera; Valerio Scartoni πŸ“‚ Article πŸ“… 1999 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 301 KB πŸ‘ 1 views

## Abstract Some new 1,2,3‐triazolo[4,5‐__e__]‐1,2,4‐triazolo[3,4‐__c__]pyrimidmes were prepared starting from the corresponding 1,2,3‐triazolo[4,5‐__d__]pyrimidines __via__ the formation of the 1,2,4‐triazole ring. Thus suitable hydrazino derivatives 6 were condensed with triethyl orthoformate, tr