Acta Crystallographica Section E (Jan 2013)

Ethyl 2,7,7-trimethyl-4-(1-methyl-1H-indol-3-yl)-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate

  • Cihat Şafak,
  • Rahime Şimşek,
  • Ahmed El-Khouly,
  • Miyase Gözde Gündüz,
  • Ray J. Butcher,
  • Sema Öztürk Yildirim

DOI
https://doi.org/10.1107/S1600536812047976
Journal volume & issue
Vol. 69, no. 1
pp. o40 – o41

Abstract

Read online

In the title molecule, C24H28N2O3, the cyclohexene ring is in a sofa conformation and the 1,4-dihydropyridine ring is in a slight boat conformation. In the indole ring system, the pyrrole and benzene rings form a dihedral angle of 2.63 (7)°. In the crystal, N—H...O hydrogen bonds connect the molecules into C(6) chains parallel to the b axis and pairs of weak C—H...O hydrogen bonds link inversion-related chains into a ladder motif through R22(18) rings. A weak intramolecular C—H...O hydrogen bond is also observed.