2-substituted-e-fused-(1,2,4)triazolo(1,5-c)pyrimidines, pharmaceutical compositions, and uses thereof
- Book ID
- 123496468
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 81 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0306-3623
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๐ SIMILAR VOLUMES
## Abstract Some new 1,2,3โtriazolo[4,5โ__e__]โ1,2,4โtriazolo[3,4โ__c__]pyrimidmes were prepared starting from the corresponding 1,2,3โtriazolo[4,5โ__d__]pyrimidines __via__ the formation of the 1,2,4โtriazole ring. Thus suitable hydrazino derivatives 6 were condensed with triethyl orthoformate, tr
## Abstract The 7โchloroโ3โ(2โchlorobenzyl)โ and 7โchloroโ3โ(2โfluorobenzyl)โ1,2,3โtriazolo[4,5โ__d__]pyrimidines (**1** and **4**), by nucleophilic replacement with some hydrazides, gave the corresponding 7โhydrazidoderivatives (**2aโe** and **5aโe**). These, by heating in Dowtherm, underwent an i