Date Published: May 01, 2012
Publisher: International Union of Crystallography
Author(s): Nikhath Fathima, H Nagarajaiah, Noor Shahina Begum.
In the title compound, C17H20N2O4S, the aryl ring is positioned perpendicular to the dihydropyrimidine ring, the dihedral angle between the ring planes being 77.48 (9)°. The carboxylate and methyl groups are in a cis conformation with respect to the C=C bond. The dihydropyrimidine ring adopts a twist-boat conformation. The crystal structure is stabilized by N—H⋯O and C—H⋯O interactions, the former resulting in molecular chains along the b axis and the latter forming inversion dimers.
For the biological activity of dihydropyrimidines, see: Kappe (2000 ▶). For a related structure, see: Begum & Vasundhara (2009 ▶).