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The High-Anti Conformation of 7-Halogenated 8-Aza-7-deaza-2′-deoxy-guanosines: A Study of the Influence of Modified Bases on the Sugar Structure of Nucleosides

✍ Scribed by Frank Seela; Georg Becher; Helmut Rosemeyer; Hans Reuter; Guido Kastner; Igor A. Mikhailopulo

Publisher: John Wiley and Sons
Year: 1999
Tongue: German
Weight: 303 KB
Volume: 82
Category: Article
ISSN: 0018-019X
DOI: 10.1002/(sici)1522-2675(19990113)82:1<105::aid-hlca105>3.0.co;2-3

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Oligonucleotides Containing Pyrazolo[3,4-d]pyrimidines: The Influence of 7-Substituted 8-Aza-7-deaza-2′-deoxyguanosines on the Duplex Structure and Stability

✍ Frank Seela; Georg Becher 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 German ⚖ 186 KB

Oligonucleotides containing 7-substituted 8-aza-7-deazaguanines ( 6-amino-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-ones) were prepared by automated solid-phase synthesis. A series of 7-alkynylated 8aza-7-deaza-2'-deoxyguanosines (see 4a ± d) were synthesized with the 7-iodonucleoside 3c as starting