Received 21 December 2012
aGroup of Physics & Chemistry, Faculty of Natural Sciences & Mathematics, State University of Tetovo, 1200 Tetovo, Macedonia,bInstitute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Arhimedova 5, 1000 Skopje, Macedonia,cInstitute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. build. 9, 1113 Sofia, Bulgaria, and dInstitute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad G. Bonchev Str. build. 107, 1113 Sofia, Bulgaria
Correspondence e-mail: email@example.com
In the title compound, C16H15N3O4, the dihedral angle between the chromane and isoxazole rings [r.m.s. deviations = 0.042 and 0.007 Å, respectively] is 20.33 (12)°. The molecular geometry is stabilized by an intramolecular N-HO hydrogen bond. In the crystal, N-HO hydrogen bonds generate chains along the c-axis direction. The crystal studied was a non-morohedral twin.
Data collection: CrysAlis PRO (Agilent, 2010); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2006); software used to prepare material for publication: WinGX (Farrugia, 2012).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: KP2443 ).
Thanks are due to Bulgarian National Science Fund of the Ministry of Education, Youth and Science for financial support (grants/contracts DRNF02/1 and DRNF02/13).
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