4-Hydroxy-2-methyl-1,1-dioxo-2H-1λ6,2- benzothiazine-3-carboxylic acid hemihydrate
نویسندگان
چکیده
منابع مشابه
4-Hydroxy-2-methyl-1,1-dioxo-2H-1λ6,2- benzothiazine-3-carboxylic acid hemihydrate
In the title compound, C(10)H(9)NO(5)S·0.5H(2)O, two geometrically different organic mol-ecules are present. The benzene rings and the carboxyl-ate groups are oriented at dihedral angles of 13.44 (4) and 21.15 (18)°. In both mol-ecules, an intra-molecular O-H⋯O hydrogen bond generates an S(6) ring. In the crystal, both moleucles form inversion dimers linked by pairs of O-H⋯O hydrogen bonds to g...
متن کامل4-Methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylic Acid. Peculiarities of Preparation, Structure, and Biological Properties
In order to determine the regularities of the structure-analgesic activity relationship, the peculiarities of obtaining, the spatial structure, and biological properties of 4-methyl-2,2-dioxo-1H-2λ⁶,1-benzothiazine-3-carboxylic acid and some of its derivatives have been studied. Using nuclear magnetic resonance (NMR) spectroscopy and X-ray diffraction analysis, it has been proven that varying t...
متن کامل1,3,7-Trimethyl-2,4-dioxo-1,2,3,4-tetrahydropteridine-6-carboxylic acid hemihydrate
In the title compound, C(10)H(10)N(4)O(4)·0.5H(2)O, the two rings of the pteridine system are nearly coplanar [dihedral angle = 4.25 (9)°]. The atoms of the carboxyl group are also coplanar with the pteridine unit [r.m.s. deviation from the mean plane of the pteridine skeleton = 0.092 (2) Å]. In the crystal, the presence of the water molecule of crystallization (O atom site symmetry 2) leads to...
متن کاملMethyl 2-(but-3-enyl)-4-hydroxy-1,1-dioxo-2H-1λ6,2-benzothiazine-3-carboxylate
In the title compound, C(14)H(15)NO(5)S, the thia-zine ring adopts a sofa conformation and an intra-molecular O-H⋯O hydrogen bond forms an S(6) ring. In the crystal, molecules are linked viaC-H⋯O inter-actions.
متن کاملMethyl 4-hydroxy-1,1-dioxo-2-(2-phenylethyl)-2H-1λ6,2-benzothiazine-3-carboxylate
In the title compound, C(18)H(17)NO(5)S, the thia-zine ring adopts a half-chair conformation and the dihedral angle between the aromatic rings is 79.41 (6)°. An intra-molecular O-H⋯O hydrogen bond generates an S(6) ring. In the crystal, mol-ecules are linked by weak C-H⋯O inter-actions resulting in infinite sheets along the b and c axes.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2012
ISSN: 1600-5368
DOI: 10.1107/s1600536812004291