Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 11 (November 2013)


organic compounds



is5309 scheme

Acta Cryst. (2013). E69, o1637    [ doi:10.1107/S1600536813027396 ]

2,15-Dioxa-7,18,19,20,23-penta­aza­hepta­cyclo­[21.6.1.117,20.01,8.03,7.09,14.024,29]hentriaconta-9,11,13,17(31),18,24,26,28-octaen-30-one

G. R. Subhashree, S. Purushothaman, R. Raghunathan, D. Velmurugan and D. Gayathri

Abstract: In the title compound, C24H23N5O3, the oxindole ring system is nearly planar, with a dihedral angle between the two fused rings of 3.3 (1)°. In the fused pyrrolo-oxazole ring system, the oxazole and pyrrolidine rings adopt envelope conformations with the spiro C atom and one of the methyl­ene C atoms, respectively, as the flap atoms. In the crystal, mol­ecules are linked into a helical chain along the b axis via C-H...O inter­actions generating R21(7) and R22(8) ring motifs.


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