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N-(3,4-Dimethyl-phen-yl)-4-hydr-oxy-2-methyl-2H-1,2-benzothia-zine-3-carboxamide 1,1-dioxide.

ABSTRACT: 1,2-Benzothia-zines similar to the title compound, C(18)H(18)N(2)O(4)S, are well known in the literature for their biological activities and are used as medicines in the treatment of inflammation and rheumatoid arthritis. The thia-zine ring adopts a distorted half-chair conformation. The enolic H atom is involved in an intra-molecular O-H⋯O hydrogen bond, forming a six-membered ring. In the crystal, mol-ecules arrange themselves into centrosymmetric dimers by means of pairs of weak inter-molecular N-H⋯O hydrogen bonds.

SUBMITTER: Siddiqui WA

PROVIDER: S-EPMC2968962 | biostudies-literature |

REPOSITORIES: biostudies-literature

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N-(2,3-Dimethyl-phen-yl)-4-hydr-oxy-2-methyl-2H-1,2-benzothia-zine-3-carboxamide 1,1-dioxide.

Project description:In the crystal structure of the title compound, C(18)H(18)N(2)O(4)S, the thia-zine ring adopts a distorted half-chair conformation. 1,2-Benzothia-zines of this kind have a wide range of biological activities and are mainly used as medicines in the treatment of inflammation and rheumatoid arthritis. The enolic H atom is involved in an intra-molecular O-H?O hydrogen bond, forming a six-membered ring. The mol-ecules arrange themselves into centrosymmetric dimers by means of inter-molecular N-H?O hydrogen bonds. A weak inter-molcular C-H?O inter-action is also present.

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Project description:In the title compound, C(13)H(15)NO(5)S, the thia-zine ring adopts a distorted half-chair conformation. The enolic H atom is involved in an intra-molecular O-H?O hydrogen bond, forming a six-membered ring. In the crystal, mol-ecules are linked through weak inter-molecular C-H?O hydrogen bonds, resulting in zigzag chains lying along the c axis.

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