Ethyl 2,7,7-trimethyl-4-(1-methyl-1H-indol-3-yl)-5-oxo-1,4,5,6,7,8-hexa-hydro-quinoline-3-carboxyl-ate

Sema Oztürk Yildirim; Ray J Butcher; Miyase Gözde Gündüz; Ahmed El-Khouly; Rahime Simşek; Cihat Safak

doi:10.1107/S1600536812047976

Ethyl 2,7,7-trimethyl-4-(1-methyl-1H-indol-3-yl)-5-oxo-1,4,5,6,7,8-hexa-hydro-quinoline-3-carboxyl-ate

Acta Crystallogr Sect E Struct Rep Online. 2013 Jan 1;69(Pt 1):o40-1. doi: 10.1107/S1600536812047976. Epub 2012 Dec 8.

Authors

Sema Oztürk Yildirim¹, Ray J Butcher, Miyase Gözde Gündüz, Ahmed El-Khouly, Rahime Simşek, Cihat Safak

Affiliation

¹ Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA ; Department of Physics, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey.

Abstract

In the title mol-ecule, C24H28N2O3, the cyclo-hexene ring is in a sofa conformation and the 1,4-dihydro-pyridine 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 mol-ecules 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 R2(2)(18) rings. A weak intra-molecular C-H⋯O hydrogen bond is also observed.