Abstract
In the title compound, C17H15NO5S, the benzene ring of the fused-ring system is twisted by 11.67 (6)° with respect to the thiazine ring. The atoms of the four-atom methyl ester group and the phenyl ring of the benzyl unit are inclined at 16.50 (7) and 44.52 (3)° with respect to the thiazine ring. An intramolecular O—H⋯O hydrogen bond gives rise to a six-membered S(6) ring motif. In the crystal, molecules are extended through a C—H⋯O interaction along the a axis. C—H⋯π interactions are also observed.
Highlights
In the title compound, C17H15NO5S, the benzene ring of the fused-ring system is twisted by 11.67 (6) with respect to the thiazine ring
Molecules are extended through a C—HÁ Á ÁO interaction along the a axis
Cg1 is the centroid of the C1–C6 ring
Summary
Key indicators: single-crystal X-ray study; T = 173 K; mean (C–C) = 0.002 A; R factor = 0.042; wR factor = 0.119; data-to-parameter ratio = 16.8. C17H15NO5S, the benzene ring of the fused-ring system is twisted by 11.67 (6) with respect to the thiazine ring. The atoms of the four-atom methyl ester group and the phenyl ring of the benzyl unit are inclined at 16.50 (7) and 44.52 (3) with respect to the thiazine ring. Molecules are extended through a C—HÁ Á ÁO interaction along the a axis. Related literature For the biological properties of benzothiazines, see: Zia-urRehman et al (2005, 2006). See: Arshad et al (2009). For graph-set notation, see: Bernstein et al (1995)
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