Abstract
The structures of the isomeric nucleosides 4-nitro-1-(beta-D-ribofuranosyl)-1H-indazole, C(12)H(13)N(3)O(6), (I), and 4-nitro-2-(beta-D-ribofuranosyl)-2H-indazole, C(12)H(13)N(3)O(6), (II), have been determined. For compound (I), the conformation of the glycosylic bond is anti [chi = -93.6 (6) degrees ] and the sugar puckering is C2'-exo-C3'-endo. Compound (II) shows two conformations in the crystalline state which differ mainly in the sugar pucker; type 1 adopts the C2'-endo-C3'-exo sugar puckering associated with a syn base orientation [chi = 43.7 (6) degrees ] and type 2 shows C2'-exo-C3'-endo sugar puckering accompanied by a somewhat different syn base orientation [chi = 13.8 (6) degrees ].
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Acta Crystallographica Section C Crystal Structure Communications
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
