The regioisomeric 1H(2H)-pyrazolo[3,4-d]pyrimidine N-1- and N-2-(2 `-deoxy-beta-D-ribofuranosides)

Autor(en): He, JL
Seela, F
Eickmeier, H
Reuter, H 
Stichwörter: BASES; Chemistry; Chemistry, Multidisciplinary; Crystallography
Erscheinungsdatum: 2002
Herausgeber: BLACKWELL MUNKSGAARD
Journal: ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
Volumen: 58
Ausgabe: 10
Startseite: O593-O595
Zusammenfassung: 
In the title regioisomeric nucleosides, alternatively called 1-(2-deoxy-beta-D-erythro-furanosyl)-1H-pyrazolo[3,4-d]pyrimidine, C10H12N4O3, (II), and 2-(2-deoxy-beta-D-erythro-furanosyl)-2H-pyrazolo[3,4-d]pyrimidine, C10H12N4O3, (III), the conformations of the glycosylic bonds are anti [-100.4 (2)degrees for (II) and 15.0 (2)degrees for (III)]. Both nucleosides adopt an S-type sugar pucker, which is C2'-endo-C3'-exo (T-2(3)) for (II) and 3'-exo (between E-3 and T-4(3)) for (III).
ISSN: 01082701
DOI: 10.1107/S0108270102014944

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