Transcript
![Page 1: Synthesis and Regioselective N- and O-Alkylation of 1H- or 3H-[1,2,3]Triazolo[4,5-d]pyrimidine-5,7(4H,6H)-diones (8-Azaxanthines) and Transformation of Their 3-Alkyl Derivatives into](https://reader035.vdocument.in/reader035/viewer/2022080100/575003bc1a28ab11489acd5e/html5/thumbnails/1.jpg)
2007
Fused pyrimidine derivativesR 0515 Synthesis and Regioselective N- and O-Alkylation of 1H- or 3H-[1,2,3]Triazo-
lo[4,5-d]pyrimidine-5,7(4H,6H)-diones (8-Azaxanthines) and Transformation of Their 3-Alkyl Derivatives into 1-Alkyl Isomers. — The synthesis of various title compounds is described and their behavior under various alkylating conditions is in-vestigated in detail. Highlight of the findings is a transformation of 3-alkyl derivatives such as (VII) into the corresponding 1-alkyl isomer (IX). — (ISLAM, R.; NAGAMATSU*, T.; Synthesis 2006, 24, 4167-4179; Dep. Drug Discovery Dev., Grad. Sch. Med., Dent. Pharm. Sci., Okayama Univ., Tsushima, Okayama 700, Japan; Eng.) — Mais
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![Page 2: Synthesis and Regioselective N- and O-Alkylation of 1H- or 3H-[1,2,3]Triazolo[4,5-d]pyrimidine-5,7(4H,6H)-diones (8-Azaxanthines) and Transformation of Their 3-Alkyl Derivatives into](https://reader035.vdocument.in/reader035/viewer/2022080100/575003bc1a28ab11489acd5e/html5/thumbnails/2.jpg)
2007
![Synthesis of Bridgehead-Fused 1, 2, 3-Triazolo [1, 5-C]-1 ... · Triazolo heterocycles occupy a central position in modern heterocyclic chemistry, because they form an important recognition](https://cdn.vdocument.in/doc/165x107/5f26c1b5f530c603ac1e4d7a/synthesis-of-bridgehead-fused-1-2-3-triazolo-1-5-c-1-triazolo-heterocycles.jpg)
