7-deaza-2 `-deoxyisoguanosine adopts the form of an N1-H,2-keto tautomer
Autor(en): | Seela, F Wei, CF Reuter, H Kastner, G |
Stichwörter: | Chemistry; Chemistry, Multidisciplinary; CRYSTAL-STRUCTURE; Crystallography; ISOGUANINE; NUCLEOSIDES; OLIGONUCLEOTIDES | Erscheinungsdatum: | 1999 | Herausgeber: | MUNKSGAARD INT PUBL LTD | Journal: | ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | Volumen: | 55 | Ausgabe: | 8 | Startseite: | 1335 | Seitenende: | 1337 | Zusammenfassung: | The structure of the title hydrate [4-amino-7-(2-deoxy-beta-D-erythro-pentofuranosyl)-3,7-dihydro-2H-pyrr olo[2,3-d]pyrimidin-2-one hydrate, C11H14N4O4. H2O], an analogue of 2'-deoxyisoguanosine, was determined by single-crystal X-ray diffraction. The glycosylic torsion angle [chi = -118.3(3)degrees] is in the anti conformation range and the sugar ring adopts a C1'-exo pucker. The molecule shows the N1-H,2-keto-6-amino tautomeric form in the solid state. |
ISSN: | 01082701 | DOI: | 10.1107/S0108270199005685 |
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geprüft am 18.05.2024