Acta Crystallographica, Section C: Crystal Structure Communications p. 1947 - 1950 (1999)
Update date:2022-08-11
Topics:
Seela, Frank
Zulauf, Matthias
Reuter, Hans
Kastner, Guido
The structures of 4-amino-1-(2-deoxy-β-D-erythro-pentofuranosyl)-1H-pyrazolo[3,4-d] pyrimidine, (I), and 4-amino-1-(2-deoxy-α-D-erythro-pentofuranosyl)-1H-pyrazolo[3,4-d] pyrimidine, (II), both C10H13N5O3, have been determined. The sugar puckering of both compounds is C-2′-endo-C-3′exo (2′T3′) (S-type sugar). The N-glycosidic torsion angle χ1 is in me anti range [-106.3 (2)° for (I) and 111.5 (3)° for (II)] and the crystal structure is stabilized by hydrogen bonds.
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