organic compounds
4-Hydroxy-3-(3-methoxybenzoyl)-2-[(3-methoxybenzoyl)methyl]-2H-1,2-benzothiazine 1,1-dioxide
aInstitute of Chemistry, University of the Punjab, Lahore 54590, Pakistan, bInstitute of Chemistry, University of the Punjab, Lahore-54590, Applied Chemistry Research Centre, PCSIR Laboratories Complex, Lahore 54600, Pakistan, cInstitute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan, and dDepartment of Chemistry, The University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
*Correspondence e-mail: drhamidlatif@yahoo.com
In the title compound, C25H21NO7S, the heterocyclic thiazine ring adopts a half-chair conformation, with the S and N atoms displaced by −0.284 (3) and 0.411 (3) Å, respectively, from the plane formed by the remaining ring atoms; the puckering parameters are: Q = 0.4576 (13) Å, θ = 58.6 (2) and φ = 34.3 (3)°. The structure is devoid of any classical hydrogen bonds. However, intramolecular C—H⋯N and O—H⋯O hydrogen bonds result in six-membered rings and intermolecular C—H⋯O interactions stabilize the crystal structure.
Related literature
For the biological applications of benzothiazines, see: Lombardino et al. (1972); Zinnes et al. (1982); Zia-ur-Rehman et al. (2005); Turck et al. (1996); Ahmad et al. (2010). For related structures, see: Siddiqui et al. (2008). For puckering parameters, see: Cremer & Pople (1975).
Experimental
Crystal data
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Refinement
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Data collection: COLLECT (Hooft, 1998); cell HKL DENZO (Otwinowski & Minor, 1997); data reduction: SCALEPACK (Otwinowski & Minor, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536810031673/jh2194sup1.cif
contains datablocks Global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810031673/jh2194Isup2.hkl
4-Hydroxy-1,1-dioxido-2H-1,2-benzothiazin-3-yl)(3-methoxyphenyl) methanone (2 g, 6.0 mmol), K2CO3 (1.24 g, 9.0 mmol), 3-methoxyphenacyl bromide (1.42 g, 6.2 mmol) and acetonitrile (25 ml) were refluxed for 6 h. The completion of reaction was monitored by TLC. After cooling to room temperature, the reaction mixture was poured into ice cold water. Yellow precipitates obtained were filtered, washed with cold water and dried. The crystals suitable for crystallographic study were grown from a solution of methanol and chloroform (1:1).
The H-atoms were located from difference Fourier maps and were included in the
at geometrically idealized positions in riding-model approximation with O—H = 0.84 Å and C—H = 0.95–0.99 Å; the Uiso(H) were allowed at 1.2Ueq(C) or 1.5Ueq(O). The final difference map was essentially featurless.Oxicams are non steroidal anti-inflammatory drugs (NSAID's) that posses benzothiazine nucleus (Lombardino et al., 1972; Zinnes et al., 1982). Versatile biological activities are associated with benzothiazine derivatives, e.g., anti-microbial (Zia-ur-Rehman et al., 2005), analgesic (Turck et al., 1996), antioxidant (Ahmad et al., 2010), etc. In this paper, we report the synthesis and
of the title compound.The structure of the title compound contains independent molecules separated by normal van der Waals distances (Fig. 1). The heterocyclic thiazine ring adopts a half-chair conformation, with atoms S1 and N1 displaced by -0.284 (3) and 0.411 (3) Å, respectively, from the plane formed by atoms C1/C6/C7/C8; the puckering parameters (Cremer & Pople, 1975) are: Q = 0.4576 (13) Å, θ = 58.6 (2)° and φ = 34.3 (3)°. Similar conformations of the corresponding rings have been reported in some closely related compounds (Siddiqui et al., 2008). The carbon fragments C1–C15 and C17–C24 are more or less planar individually and lie at an angle 77.17 (2)° with rest to each other.
The structure is devoid of any classical hydrogen bonds. However, intramolecular interactions C15—H15···N1 and O3—H3O···O4 resulting in six membered rings and intermolecular interactions of the type C—H···O are present (Tab. 1).
For the biological applications of benzothiazines, see: Lombardino et al. (1972); Zinnes et al. (1982); Zia-ur-Rehman et al. (2005); Turck et al. (1996); Ahmad et al. (2010). For related structures, see: Siddiqui et al. (2008). For puckering parameters, see: Cremer & Pople (1975).
Data collection: COLLECT (Hooft, 1998); cell
HKL DENZO (Otwinowski & Minor, 1997); data reduction: SCALEPACK (Otwinowski & Minor, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The title molecule plotted with the displacement ellipsoids at 50% probability level (Farrugia, 1997). |
C25H21NO7S | Z = 2 |
Mr = 479.49 | F(000) = 500 |
Triclinic, P1 | Dx = 1.487 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 10.3169 (2) Å | Cell parameters from 4699 reflections |
b = 10.6923 (3) Å | θ = 1.0–27.5° |
c = 11.6867 (3) Å | µ = 0.20 mm−1 |
α = 115.5965 (11)° | T = 173 K |
β = 105.8041 (14)° | Prism, yellow |
γ = 97.6128 (13)° | 0.24 × 0.16 × 0.08 mm |
V = 1071.22 (5) Å3 |
Nonius KappaCCD diffractometer | 4860 independent reflections |
Radiation source: fine-focus sealed tube | 4419 reflections with (I) > 2.0 σ(I) |
Graphite monochromator | Rint = 0.021 |
ω and φ scans | θmax = 27.5°, θmin = 2.1° |
Absorption correction: multi-scan (SORTAV; Blessing, 1997) | h = −13→13 |
Tmin = 0.953, Tmax = 0.984 | k = −13→13 |
9164 measured reflections | l = −15→15 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.038 | Hydrogen site location: difference Fourier map |
wR(F2) = 0.098 | H-atom parameters constrained |
S = 1.07 | w = 1/[σ2(Fo2) + (0.0352P)2 + 0.7607P] where P = (Fo2 + 2Fc2)/3 |
4860 reflections | (Δ/σ)max < 0.001 |
310 parameters | Δρmax = 0.37 e Å−3 |
0 restraints | Δρmin = −0.42 e Å−3 |
C25H21NO7S | γ = 97.6128 (13)° |
Mr = 479.49 | V = 1071.22 (5) Å3 |
Triclinic, P1 | Z = 2 |
a = 10.3169 (2) Å | Mo Kα radiation |
b = 10.6923 (3) Å | µ = 0.20 mm−1 |
c = 11.6867 (3) Å | T = 173 K |
α = 115.5965 (11)° | 0.24 × 0.16 × 0.08 mm |
β = 105.8041 (14)° |
Nonius KappaCCD diffractometer | 4860 independent reflections |
Absorption correction: multi-scan (SORTAV; Blessing, 1997) | 4419 reflections with (I) > 2.0 σ(I) |
Tmin = 0.953, Tmax = 0.984 | Rint = 0.021 |
9164 measured reflections |
R[F2 > 2σ(F2)] = 0.038 | 0 restraints |
wR(F2) = 0.098 | H-atom parameters constrained |
S = 1.07 | Δρmax = 0.37 e Å−3 |
4860 reflections | Δρmin = −0.42 e Å−3 |
310 parameters |
Experimental. Yield: 2.44 g, 85%, m.p. 434–435 K, IR (KBr, νmax): 2972, 1708, 1331, 1172 cm-1, EI—MS (m/z): 479.0 |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
S1 | 0.29020 (4) | 0.27269 (4) | 0.29750 (3) | 0.01827 (10) | |
O1 | 0.23063 (12) | 0.17819 (13) | 0.33899 (11) | 0.0256 (2) | |
O2 | 0.33929 (12) | 0.42553 (12) | 0.39028 (11) | 0.0259 (2) | |
O3 | 0.23349 (13) | −0.08669 (12) | −0.08736 (11) | 0.0273 (3) | |
H3O | 0.2898 | −0.1328 | −0.0726 | 0.041* | |
O4 | 0.42851 (13) | −0.14158 (13) | 0.03455 (12) | 0.0320 (3) | |
O5 | 0.70078 (13) | 0.17729 (14) | 0.64535 (12) | 0.0310 (3) | |
O6 | 0.42789 (11) | 0.38168 (13) | 0.12184 (12) | 0.0281 (3) | |
O7 | 1.04913 (12) | 0.66025 (14) | 0.44194 (12) | 0.0313 (3) | |
N1 | 0.41973 (12) | 0.22081 (13) | 0.25537 (12) | 0.0175 (2) | |
C1 | 0.16599 (15) | 0.23577 (16) | 0.14140 (15) | 0.0195 (3) | |
C2 | 0.07019 (16) | 0.31470 (18) | 0.14134 (17) | 0.0251 (3) | |
H2 | 0.0773 | 0.3954 | 0.2236 | 0.030* | |
C3 | −0.03709 (17) | 0.27353 (19) | 0.01822 (18) | 0.0277 (3) | |
H3 | −0.1043 | 0.3261 | 0.0163 | 0.033* | |
C4 | −0.04588 (16) | 0.15639 (18) | −0.10117 (16) | 0.0260 (3) | |
H4 | −0.1208 | 0.1274 | −0.1842 | 0.031* | |
C5 | 0.05357 (16) | 0.08082 (17) | −0.10094 (15) | 0.0231 (3) | |
H5 | 0.0480 | 0.0024 | −0.1840 | 0.028* | |
C6 | 0.16194 (15) | 0.11974 (16) | 0.02119 (15) | 0.0193 (3) | |
C8 | 0.38133 (15) | 0.07832 (15) | 0.14093 (14) | 0.0185 (3) | |
C7 | 0.26316 (15) | 0.03505 (16) | 0.02289 (15) | 0.0198 (3) | |
C9 | 0.45739 (16) | −0.02239 (16) | 0.14564 (15) | 0.0219 (3) | |
C10 | 0.56820 (16) | −0.00465 (16) | 0.26834 (16) | 0.0218 (3) | |
C11 | 0.65958 (18) | −0.09010 (18) | 0.24566 (18) | 0.0278 (3) | |
H11 | 0.6521 | −0.1530 | 0.1552 | 0.033* | |
C12 | 0.76153 (19) | −0.0826 (2) | 0.35613 (19) | 0.0337 (4) | |
H12 | 0.8241 | −0.1403 | 0.3408 | 0.040* | |
C13 | 0.77297 (18) | 0.0075 (2) | 0.48786 (18) | 0.0311 (4) | |
H13 | 0.8431 | 0.0116 | 0.5626 | 0.037* | |
C14 | 0.68140 (17) | 0.09261 (17) | 0.51133 (16) | 0.0245 (3) | |
C15 | 0.57875 (16) | 0.08652 (16) | 0.40222 (16) | 0.0223 (3) | |
H15 | 0.5159 | 0.1438 | 0.4180 | 0.027* | |
C16 | 0.6187 (2) | 0.2765 (2) | 0.67580 (18) | 0.0354 (4) | |
H16A | 0.6443 | 0.3321 | 0.7749 | 0.043* | |
H16B | 0.5186 | 0.2226 | 0.6324 | 0.043* | |
H16C | 0.6370 | 0.3429 | 0.6410 | 0.043* | |
C17 | 0.54988 (15) | 0.32707 (16) | 0.29135 (15) | 0.0194 (3) | |
H17A | 0.6254 | 0.2789 | 0.2869 | 0.023* | |
H17B | 0.5774 | 0.4045 | 0.3870 | 0.023* | |
C18 | 0.54062 (15) | 0.39652 (16) | 0.20087 (15) | 0.0194 (3) | |
C19 | 0.67638 (15) | 0.48054 (16) | 0.21338 (15) | 0.0199 (3) | |
C20 | 0.79776 (16) | 0.53606 (16) | 0.33060 (15) | 0.0216 (3) | |
H20 | 0.7942 | 0.5258 | 0.4066 | 0.026* | |
C21 | 0.92400 (15) | 0.60661 (16) | 0.33434 (16) | 0.0222 (3) | |
C22 | 0.92881 (17) | 0.62253 (17) | 0.22334 (17) | 0.0250 (3) | |
H22 | 1.0154 | 0.6691 | 0.2257 | 0.030* | |
C23 | 0.80723 (17) | 0.57047 (18) | 0.10920 (17) | 0.0263 (3) | |
H23 | 0.8104 | 0.5839 | 0.0347 | 0.032* | |
C24 | 0.68086 (16) | 0.49892 (17) | 0.10313 (16) | 0.0233 (3) | |
H24 | 0.5980 | 0.4627 | 0.0245 | 0.028* | |
C25 | 1.04318 (18) | 0.7108 (2) | 0.57431 (17) | 0.0323 (4) | |
H25A | 1.1368 | 0.7708 | 0.6436 | 0.039* | |
H25B | 1.0120 | 0.6279 | 0.5859 | 0.039* | |
H25C | 0.9767 | 0.7687 | 0.5845 | 0.039* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.01845 (17) | 0.01876 (18) | 0.01474 (17) | 0.00516 (13) | 0.00559 (13) | 0.00620 (14) |
O1 | 0.0246 (5) | 0.0319 (6) | 0.0240 (6) | 0.0064 (5) | 0.0112 (4) | 0.0160 (5) |
O2 | 0.0275 (6) | 0.0205 (6) | 0.0193 (5) | 0.0081 (4) | 0.0047 (4) | 0.0030 (4) |
O3 | 0.0335 (6) | 0.0221 (6) | 0.0177 (5) | 0.0075 (5) | 0.0065 (5) | 0.0045 (5) |
O4 | 0.0389 (7) | 0.0217 (6) | 0.0249 (6) | 0.0131 (5) | 0.0092 (5) | 0.0028 (5) |
O5 | 0.0354 (6) | 0.0343 (7) | 0.0230 (6) | 0.0139 (5) | 0.0076 (5) | 0.0147 (5) |
O6 | 0.0193 (5) | 0.0358 (7) | 0.0315 (6) | 0.0052 (5) | 0.0049 (5) | 0.0220 (5) |
O7 | 0.0183 (5) | 0.0408 (7) | 0.0251 (6) | 0.0006 (5) | 0.0046 (5) | 0.0123 (5) |
N1 | 0.0169 (6) | 0.0149 (6) | 0.0167 (6) | 0.0026 (4) | 0.0053 (5) | 0.0056 (5) |
C1 | 0.0163 (6) | 0.0218 (7) | 0.0184 (7) | 0.0026 (5) | 0.0047 (5) | 0.0101 (6) |
C2 | 0.0231 (7) | 0.0268 (8) | 0.0246 (8) | 0.0079 (6) | 0.0087 (6) | 0.0117 (7) |
C3 | 0.0218 (7) | 0.0316 (9) | 0.0335 (9) | 0.0092 (6) | 0.0082 (7) | 0.0200 (7) |
C4 | 0.0201 (7) | 0.0302 (8) | 0.0246 (8) | 0.0003 (6) | 0.0017 (6) | 0.0166 (7) |
C5 | 0.0225 (7) | 0.0236 (8) | 0.0176 (7) | −0.0006 (6) | 0.0041 (6) | 0.0093 (6) |
C6 | 0.0187 (7) | 0.0188 (7) | 0.0179 (7) | 0.0007 (5) | 0.0052 (5) | 0.0091 (6) |
C8 | 0.0202 (7) | 0.0164 (7) | 0.0174 (7) | 0.0035 (5) | 0.0080 (5) | 0.0068 (6) |
C7 | 0.0231 (7) | 0.0180 (7) | 0.0169 (7) | 0.0028 (6) | 0.0085 (6) | 0.0077 (6) |
C9 | 0.0241 (7) | 0.0189 (7) | 0.0212 (7) | 0.0043 (6) | 0.0093 (6) | 0.0084 (6) |
C10 | 0.0236 (7) | 0.0190 (7) | 0.0257 (8) | 0.0066 (6) | 0.0101 (6) | 0.0126 (6) |
C11 | 0.0347 (9) | 0.0244 (8) | 0.0300 (8) | 0.0136 (7) | 0.0163 (7) | 0.0141 (7) |
C12 | 0.0360 (9) | 0.0369 (10) | 0.0411 (10) | 0.0229 (8) | 0.0188 (8) | 0.0237 (8) |
C13 | 0.0301 (9) | 0.0352 (9) | 0.0335 (9) | 0.0148 (7) | 0.0087 (7) | 0.0218 (8) |
C14 | 0.0261 (8) | 0.0243 (8) | 0.0262 (8) | 0.0070 (6) | 0.0095 (6) | 0.0151 (7) |
C15 | 0.0236 (7) | 0.0208 (7) | 0.0260 (8) | 0.0081 (6) | 0.0095 (6) | 0.0137 (6) |
C16 | 0.0469 (11) | 0.0305 (9) | 0.0256 (8) | 0.0165 (8) | 0.0121 (8) | 0.0103 (7) |
C17 | 0.0167 (6) | 0.0182 (7) | 0.0192 (7) | 0.0012 (5) | 0.0037 (5) | 0.0085 (6) |
C18 | 0.0193 (7) | 0.0175 (7) | 0.0190 (7) | 0.0049 (5) | 0.0060 (5) | 0.0076 (6) |
C19 | 0.0197 (7) | 0.0177 (7) | 0.0227 (7) | 0.0056 (5) | 0.0085 (6) | 0.0099 (6) |
C20 | 0.0217 (7) | 0.0208 (7) | 0.0210 (7) | 0.0048 (6) | 0.0074 (6) | 0.0099 (6) |
C21 | 0.0191 (7) | 0.0197 (7) | 0.0238 (7) | 0.0046 (6) | 0.0065 (6) | 0.0086 (6) |
C22 | 0.0244 (8) | 0.0224 (7) | 0.0302 (8) | 0.0053 (6) | 0.0129 (6) | 0.0134 (7) |
C23 | 0.0306 (8) | 0.0274 (8) | 0.0276 (8) | 0.0084 (7) | 0.0144 (7) | 0.0169 (7) |
C24 | 0.0236 (7) | 0.0245 (8) | 0.0230 (7) | 0.0071 (6) | 0.0074 (6) | 0.0133 (6) |
C25 | 0.0263 (8) | 0.0363 (9) | 0.0233 (8) | 0.0068 (7) | 0.0041 (6) | 0.0090 (7) |
S1—O2 | 1.4329 (11) | C10—C15 | 1.404 (2) |
S1—O1 | 1.4334 (11) | C11—C12 | 1.389 (2) |
S1—N1 | 1.6294 (12) | C11—H11 | 0.9500 |
S1—C1 | 1.7597 (15) | C12—C13 | 1.379 (3) |
O3—C7 | 1.2956 (18) | C12—H12 | 0.9500 |
O3—H3O | 0.8400 | C13—C14 | 1.396 (2) |
O4—C9 | 1.2875 (19) | C13—H13 | 0.9500 |
O5—C14 | 1.367 (2) | C14—C15 | 1.388 (2) |
O5—C16 | 1.430 (2) | C15—H15 | 0.9500 |
O6—C18 | 1.2126 (18) | C16—H16A | 0.9800 |
O7—C21 | 1.3686 (18) | C16—H16B | 0.9800 |
O7—C25 | 1.424 (2) | C16—H16C | 0.9800 |
N1—C8 | 1.4344 (18) | C17—C18 | 1.523 (2) |
N1—C17 | 1.4651 (17) | C17—H17A | 0.9900 |
C1—C2 | 1.382 (2) | C17—H17B | 0.9900 |
C1—C6 | 1.401 (2) | C18—C19 | 1.494 (2) |
C2—C3 | 1.395 (2) | C19—C24 | 1.396 (2) |
C2—H2 | 0.9500 | C19—C20 | 1.401 (2) |
C3—C4 | 1.384 (2) | C20—C21 | 1.396 (2) |
C3—H3 | 0.9500 | C20—H20 | 0.9500 |
C4—C5 | 1.388 (2) | C21—C22 | 1.392 (2) |
C4—H4 | 0.9500 | C22—C23 | 1.387 (2) |
C5—C6 | 1.398 (2) | C22—H22 | 0.9500 |
C5—H5 | 0.9500 | C23—C24 | 1.389 (2) |
C6—C7 | 1.472 (2) | C23—H23 | 0.9500 |
C8—C7 | 1.409 (2) | C24—H24 | 0.9500 |
C8—C9 | 1.425 (2) | C25—H25A | 0.9800 |
C9—C10 | 1.488 (2) | C25—H25B | 0.9800 |
C10—C11 | 1.396 (2) | C25—H25C | 0.9800 |
O2—S1—O1 | 118.83 (7) | C12—C13—C14 | 119.97 (16) |
O2—S1—N1 | 108.34 (7) | C12—C13—H13 | 120.0 |
O1—S1—N1 | 108.04 (7) | C14—C13—H13 | 120.0 |
O2—S1—C1 | 110.07 (7) | O5—C14—C15 | 124.51 (15) |
O1—S1—C1 | 107.34 (7) | O5—C14—C13 | 115.40 (14) |
N1—S1—C1 | 103.07 (7) | C15—C14—C13 | 120.08 (15) |
C7—O3—H3O | 109.5 | C14—C15—C10 | 119.71 (14) |
C14—O5—C16 | 117.64 (13) | C14—C15—H15 | 120.1 |
C21—O7—C25 | 117.12 (13) | C10—C15—H15 | 120.1 |
C8—N1—C17 | 119.25 (11) | O5—C16—H16A | 109.5 |
C8—N1—S1 | 115.44 (9) | O5—C16—H16B | 109.5 |
C17—N1—S1 | 120.85 (10) | H16A—C16—H16B | 109.5 |
C2—C1—C6 | 122.10 (14) | O5—C16—H16C | 109.5 |
C2—C1—S1 | 119.57 (12) | H16A—C16—H16C | 109.5 |
C6—C1—S1 | 118.19 (11) | H16B—C16—H16C | 109.5 |
C1—C2—C3 | 118.73 (15) | N1—C17—C18 | 114.76 (12) |
C1—C2—H2 | 120.6 | N1—C17—H17A | 108.6 |
C3—C2—H2 | 120.6 | C18—C17—H17A | 108.6 |
C4—C3—C2 | 120.18 (15) | N1—C17—H17B | 108.6 |
C4—C3—H3 | 119.9 | C18—C17—H17B | 108.6 |
C2—C3—H3 | 119.9 | H17A—C17—H17B | 107.6 |
C3—C4—C5 | 120.69 (14) | O6—C18—C19 | 122.43 (14) |
C3—C4—H4 | 119.7 | O6—C18—C17 | 120.85 (13) |
C5—C4—H4 | 119.7 | C19—C18—C17 | 116.71 (12) |
C4—C5—C6 | 120.20 (15) | C24—C19—C20 | 120.41 (14) |
C4—C5—H5 | 119.9 | C24—C19—C18 | 118.28 (13) |
C6—C5—H5 | 119.9 | C20—C19—C18 | 121.27 (13) |
C5—C6—C1 | 118.03 (14) | C21—C20—C19 | 119.16 (14) |
C5—C6—C7 | 120.31 (14) | C21—C20—H20 | 120.4 |
C1—C6—C7 | 121.57 (13) | C19—C20—H20 | 120.4 |
C7—C8—C9 | 119.14 (13) | O7—C21—C22 | 115.97 (14) |
C7—C8—N1 | 119.46 (13) | O7—C21—C20 | 123.67 (14) |
C9—C8—N1 | 121.37 (13) | C22—C21—C20 | 120.34 (14) |
O3—C7—C8 | 121.27 (14) | C23—C22—C21 | 120.02 (14) |
O3—C7—C6 | 116.54 (13) | C23—C22—H22 | 120.0 |
C8—C7—C6 | 122.05 (13) | C21—C22—H22 | 120.0 |
O4—C9—C8 | 118.14 (14) | C22—C23—C24 | 120.47 (15) |
O4—C9—C10 | 115.58 (14) | C22—C23—H23 | 119.8 |
C8—C9—C10 | 126.27 (14) | C24—C23—H23 | 119.8 |
C11—C10—C15 | 119.87 (14) | C23—C24—C19 | 119.57 (14) |
C11—C10—C9 | 116.94 (14) | C23—C24—H24 | 120.2 |
C15—C10—C9 | 123.09 (14) | C19—C24—H24 | 120.2 |
C12—C11—C10 | 119.58 (16) | O7—C25—H25A | 109.5 |
C12—C11—H11 | 120.2 | O7—C25—H25B | 109.5 |
C10—C11—H11 | 120.2 | H25A—C25—H25B | 109.5 |
C13—C12—C11 | 120.78 (16) | O7—C25—H25C | 109.5 |
C13—C12—H12 | 119.6 | H25A—C25—H25C | 109.5 |
C11—C12—H12 | 119.6 | H25B—C25—H25C | 109.5 |
O2—S1—N1—C8 | −166.79 (10) | N1—C8—C9—C10 | 8.9 (2) |
O1—S1—N1—C8 | 63.25 (12) | O4—C9—C10—C11 | 20.3 (2) |
C1—S1—N1—C8 | −50.17 (12) | C8—C9—C10—C11 | −160.34 (15) |
O2—S1—N1—C17 | −10.66 (13) | O4—C9—C10—C15 | −156.17 (15) |
O1—S1—N1—C17 | −140.62 (11) | C8—C9—C10—C15 | 23.2 (2) |
C1—S1—N1—C17 | 105.97 (11) | C15—C10—C11—C12 | −0.9 (2) |
O2—S1—C1—C2 | −38.43 (14) | C9—C10—C11—C12 | −177.40 (15) |
O1—S1—C1—C2 | 92.25 (13) | C10—C11—C12—C13 | 0.4 (3) |
N1—S1—C1—C2 | −153.82 (12) | C11—C12—C13—C14 | 0.0 (3) |
O2—S1—C1—C6 | 145.82 (11) | C16—O5—C14—C15 | −6.3 (2) |
O1—S1—C1—C6 | −83.50 (12) | C16—O5—C14—C13 | 174.28 (15) |
N1—S1—C1—C6 | 30.43 (13) | C12—C13—C14—O5 | 179.53 (16) |
C6—C1—C2—C3 | 2.6 (2) | C12—C13—C14—C15 | 0.1 (3) |
S1—C1—C2—C3 | −172.99 (12) | O5—C14—C15—C10 | −179.92 (14) |
C1—C2—C3—C4 | −0.5 (2) | C13—C14—C15—C10 | −0.5 (2) |
C2—C3—C4—C5 | −1.7 (2) | C11—C10—C15—C14 | 0.9 (2) |
C3—C4—C5—C6 | 1.9 (2) | C9—C10—C15—C14 | 177.24 (14) |
C4—C5—C6—C1 | 0.2 (2) | C8—N1—C17—C18 | 77.60 (17) |
C4—C5—C6—C7 | 176.77 (13) | S1—N1—C17—C18 | −77.64 (15) |
C2—C1—C6—C5 | −2.4 (2) | N1—C17—C18—O6 | 11.8 (2) |
S1—C1—C6—C5 | 173.19 (11) | N1—C17—C18—C19 | −167.24 (12) |
C2—C1—C6—C7 | −178.99 (14) | O6—C18—C19—C24 | −22.8 (2) |
S1—C1—C6—C7 | −3.36 (19) | C17—C18—C19—C24 | 156.26 (14) |
C17—N1—C8—C7 | −111.52 (15) | O6—C18—C19—C20 | 159.16 (15) |
S1—N1—C8—C7 | 45.01 (16) | C17—C18—C19—C20 | −21.8 (2) |
C17—N1—C8—C9 | 70.61 (18) | C24—C19—C20—C21 | −1.7 (2) |
S1—N1—C8—C9 | −132.85 (12) | C18—C19—C20—C21 | 176.33 (14) |
C9—C8—C7—O3 | −9.2 (2) | C25—O7—C21—C22 | 150.29 (15) |
N1—C8—C7—O3 | 172.85 (13) | C25—O7—C21—C20 | −31.4 (2) |
C9—C8—C7—C6 | 166.26 (13) | C19—C20—C21—O7 | −177.72 (14) |
N1—C8—C7—C6 | −11.6 (2) | C19—C20—C21—C22 | 0.5 (2) |
C5—C6—C7—O3 | −10.3 (2) | O7—C21—C22—C23 | 179.53 (15) |
C1—C6—C7—O3 | 166.13 (13) | C20—C21—C22—C23 | 1.2 (2) |
C5—C6—C7—C8 | 173.95 (13) | C21—C22—C23—C24 | −1.7 (2) |
C1—C6—C7—C8 | −9.6 (2) | C22—C23—C24—C19 | 0.5 (2) |
C7—C8—C9—O4 | 10.4 (2) | C20—C19—C24—C23 | 1.2 (2) |
N1—C8—C9—O4 | −171.74 (13) | C18—C19—C24—C23 | −176.90 (14) |
C7—C8—C9—C10 | −169.00 (14) |
D—H···A | D—H | H···A | D···A | D—H···A |
C25—H25C···O1i | 0.98 | 2.57 | 3.438 (2) | 147 |
C17—H17B···O2i | 0.99 | 2.26 | 3.244 (2) | 174 |
C17—H17B···O2 | 0.99 | 2.51 | 2.844 (2) | 100 |
C15—H15···N1 | 0.95 | 2.41 | 2.986 (2) | 119 |
O3—H3O···O4 | 0.84 | 1.67 | 2.428 (2) | 149 |
Symmetry code: (i) −x+1, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C25H21NO7S |
Mr | 479.49 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 173 |
a, b, c (Å) | 10.3169 (2), 10.6923 (3), 11.6867 (3) |
α, β, γ (°) | 115.5965 (11), 105.8041 (14), 97.6128 (13) |
V (Å3) | 1071.22 (5) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.20 |
Crystal size (mm) | 0.24 × 0.16 × 0.08 |
Data collection | |
Diffractometer | Nonius KappaCCD |
Absorption correction | Multi-scan (SORTAV; Blessing, 1997) |
Tmin, Tmax | 0.953, 0.984 |
No. of measured, independent and observed [(I) > 2.0 σ(I)] reflections | 9164, 4860, 4419 |
Rint | 0.021 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.038, 0.098, 1.07 |
No. of reflections | 4860 |
No. of parameters | 310 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.37, −0.42 |
Computer programs: COLLECT (Hooft, 1998), HKL DENZO (Otwinowski & Minor, 1997), SCALEPACK (Otwinowski & Minor, 1997), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997).
D—H···A | D—H | H···A | D···A | D—H···A |
C25—H25C···O1i | 0.98 | 2.57 | 3.438 (2) | 147 |
C17—H17B···O2i | 0.99 | 2.26 | 3.244 (2) | 174 |
C15—H15···N1 | 0.95 | 2.41 | 2.986 (2) | 119 |
O3—H3O···O4 | 0.84 | 1.67 | 2.428 (2) | 149 |
Symmetry code: (i) −x+1, −y+1, −z+1. |
Acknowledgements
HLS is grateful to the Institute of Chemistry, University of the Punjab, Lahore, Pakistan, for financial support.
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Oxicams are non steroidal anti-inflammatory drugs (NSAID's) that posses benzothiazine nucleus (Lombardino et al., 1972; Zinnes et al., 1982). Versatile biological activities are associated with benzothiazine derivatives, e.g., anti-microbial (Zia-ur-Rehman et al., 2005), analgesic (Turck et al., 1996), antioxidant (Ahmad et al., 2010), etc. In this paper, we report the synthesis and crystal structure of the title compound.
The structure of the title compound contains independent molecules separated by normal van der Waals distances (Fig. 1). The heterocyclic thiazine ring adopts a half-chair conformation, with atoms S1 and N1 displaced by -0.284 (3) and 0.411 (3) Å, respectively, from the plane formed by atoms C1/C6/C7/C8; the puckering parameters (Cremer & Pople, 1975) are: Q = 0.4576 (13) Å, θ = 58.6 (2)° and φ = 34.3 (3)°. Similar conformations of the corresponding rings have been reported in some closely related compounds (Siddiqui et al., 2008). The carbon fragments C1–C15 and C17–C24 are more or less planar individually and lie at an angle 77.17 (2)° with rest to each other.
The structure is devoid of any classical hydrogen bonds. However, intramolecular interactions C15—H15···N1 and O3—H3O···O4 resulting in six membered rings and intermolecular interactions of the type C—H···O are present (Tab. 1).