Acta Crystallographica Section E (Jul 2012)

rac-Dimethyl 5-oxo-2-[(2,4,4-trimethylpentan-2-yl)amino]-4,5-dihydropyrano[3,2-c]chromene-3,4-dicarboxylate

  • S. Antony Inglebert,
  • Yuvaraj Arun,
  • K. Sethusankar,
  • Paramasivam T. Perumal

DOI
https://doi.org/10.1107/S1600536812027596
Journal volume & issue
Vol. 68, no. 7
pp. o2177 – o2177

Abstract

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The title compound, C24H29NO7, is asymmetric with a chiral centre located in the pyran ring and crystallizes as a racemate. The coumarin ring system and the fused pyran ring make a dihedral angle of 10.46 (8)°. A short intramolecular N—H...O hydrogen bond between the amino group and the vicinal carbonyl group generates an S(6) ring. Intermolecular C—H...O interactions contribute to the stability of the crystal structure.