Received 31 March 2012
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-HO and C-HO interactions, the former resulting in molecular chains along the b axis and the latter forming inversion dimers.
Data collection: SMART (Bruker, 1998); cell refinement: SAINT-Plus (Bruker, 1998); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and CAMERON (Watkin et al., 1996); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: PV2529 ).
NSB is thankful to the University Grants Commission (UGC), India, for financial assistance.
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