organic compounds
4-Methoxy-N-[6-methyl-2,3-dihydro-1,3-benzothiazol-2-ylidene]benzenesulfonamide
aFacultad de Farmacia, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001 Col Chamilpa CP 62100, Cuernavaca Mor., Mexico, bUnidad de Biomedicina, FES Iztacala, Universidad Nacional Autónoma de, Mexico, Tlalnepantla, Méx. 54090, Mexico, and cCentro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos. Av. Universidad 1001 Col., Chamilpa, CP 62100, Cuernavaca Mor., Mexico
*Correspondence e-mail: tlahuext@ciq.uaem.mx
The title compound, C15H14N2O3S2, is of interest with respect to its biological activity. The is stabilized by intermolecular N—H⋯N, C—H⋯O and C—H⋯π hydrogen-bonding interactions, as well as offset π–π interactions [distance between the centroids of the aryl and thiazole rings of adjacent molecules of 3.954 (2) Å].
Related literature
For related literature, see: Su et al. (2006); Vicker et al. (2007); Siddiqui et al. (2007); Adams et al. (1996); Bernstein et al. (1995); Desiraju (1991); Hanton et al. (1992); Hunter (1994).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2000); cell SAINT-Plus-NT (Bruker, 2000); data reduction: SAINT-Plus-NT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL-NT (Bruker, 2000); software used to prepare material for publication: PLATON (Spek, 2003) and publCIF (Westrip, 2008).
Supporting information
https://doi.org/10.1107/S1600536807065312/at2516sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536807065312/at2516Isup2.hkl
To a solution of 2-amino-6-methylbenzothiazole (0.0030 mol) in dichloromethane (10 ml) were added triethylamine (1.1 eq), and a catalytic amount of dimethylaminopyridine (DMAP). After stirring at room temperature for 15 min, a solution of 4-methoxybenzenesulfonyl chloride (0.0033 mol, 1.1 eq) in 5 ml of dichloromethane was added droopingly. The reaction mixture was stirred at 313 K under nitrogen atmosphere for 6 h. After complete conversion as indicated by TLC, the solvent was removed in vacuo, the residue was neutralized with saturated NaHCO3 solution, and the aqueous layer was extracted with ethyl acetate (3 x 15 ml), washed with water (3 x 20 ml), and dried over anhydrous Na2SO4. The solvent was evaporated in vacuo to give a yellow solid (m.p. 534.4 K). Single crystals of (I) were obtained from acetonitrile.
The hydrogen H1 was located in a difference Fourier map and was refined freely. The other H atoms were constrained to the riding-model approximation [C—Haryl = 0.93 Å, Uiso(Haryl) = 1.2 Ueq(Caryl); C—Hmethyl = 0.96 Å, Uiso(H) = 1.5 Ueq(Cmethyl)].
Benzothiazole benzenesulfonamides are selective inhibitors of 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1). They have a considerable potential use for the treatment of metabolic diseases, such as diabetes mellitus type 2 or obesity (Su et al., 2006; Vicker et al., 2007). This kind of compounds have also shown anticonvulsant activity (Siddiqui et al., 2007).
In order to assist our knowledge about the electronic and steric requirements to shown antihyperglycemic activity, we have determined the
of the title compound, which is a new chemical entity with potential use in the treatment of diabetes.The title compound (I) crystallizes in the centrosymmetric monoclinic π-facial hydrogen bonds between the methoxy group (C14) and C8—C13 benzene ring (O—CH3···π) (Hanton et al., 1992; Adams et al., 1996, Desiraju, 1991). The distance between C14 and the ring centroid (Cg3) is 3.433 (3) Å (Fig. 2, Table 2).
P21/c. The is stabilized by strong hydrogen-bonding interactions N1—H1···N2, and weak hydrogen bonding interactions C—H···O, which are forming R22(8) motifs (Bernstein et al., 1995) Fig. 1, Table 2. In the crystal packing there are alsoThe π-π interactions between two adjacent molecules, with a distance between the centroids of the C1—C6 benzene ring (Cg2) and (S2/C7/N1/C2/C1) benzothiazol ring (Cg1) of 3.954 (2) Å (Fig. 2). This interaction is favourable by effect of polarization of the sulfonamid group (Hunter, 1994).
is also stabilized by offsetFor related literature, see: Su et al. (2006); Vicker et al. (2007); Siddiqui et al. (2007); Adams et al. (1996); Bernstein et al. (1995); Desiraju (1991); Hanton et al. (1992); Hunter (1994).
Data collection: SMART (Bruker, 2000); cell
SAINT-Plus-NT (Bruker, 2000); data reduction: SAINT-Plus-NT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 2000); software used to prepare material for publication: PLATON (Spek, 2003) and publCIF (Westrip, 2008).Fig. 1. The molecular structure of (I) showing 50% probability displacement ellipsoids, H atoms are shown as small spheres of arbitrary radius and the atomic numbering. The intermolecular hydrogen bonds N—H···N and C—H···O, which are forming the R22(8) motifs are shown as dotted lines. | |
Fig. 2. A view of the π-facial hydrogen bonds (OCH3···π) and offset π-π interactions. Dashed lines indicate the interaction between methoxy group (C14) and centroid Cg3, as well as between centroids (Cg1, Cg2). |
C15H14N2O3S2 | F(000) = 696 |
Mr = 334.40 | Dx = 1.496 Mg m−3 |
Monoclinic, P21/c | Melting point: 534.4 K |
Hall symbol: -P 2ybc | Mo Kα radiation, λ = 0.71073 Å |
a = 12.0173 (15) Å | Cell parameters from 2617 reflections |
b = 16.211 (2) Å | θ = 1.7–25.0° |
c = 7.7377 (10) Å | µ = 0.37 mm−1 |
β = 99.973 (2)° | T = 273 K |
V = 1484.6 (3) Å3 | Rectangular prism, yellow |
Z = 4 | 0.57 × 0.16 × 0.10 mm |
Bruker SMART APEX CCD area-detector diffractometer | 2617 independent reflections |
Radiation source: fine-focus sealed tube | 2440 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.032 |
Detector resolution: 8.3 pixels mm-1 | θmax = 25.0°, θmin = 1.7° |
φ and ω scans | h = −14→14 |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | k = −19→18 |
Tmin = 0.816, Tmax = 0.964 | l = −9→9 |
12102 measured reflections |
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)] = 0.048 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.117 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.15 | w = 1/[σ2(Fo2) + (0.0504P)2 + 0.9002P] where P = (Fo2 + 2Fc2)/3 |
2617 reflections | (Δ/σ)max = 0.001 |
205 parameters | Δρmax = 0.41 e Å−3 |
0 restraints | Δρmin = −0.20 e Å−3 |
C15H14N2O3S2 | V = 1484.6 (3) Å3 |
Mr = 334.40 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 12.0173 (15) Å | µ = 0.37 mm−1 |
b = 16.211 (2) Å | T = 273 K |
c = 7.7377 (10) Å | 0.57 × 0.16 × 0.10 mm |
β = 99.973 (2)° |
Bruker SMART APEX CCD area-detector diffractometer | 2617 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | 2440 reflections with I > 2σ(I) |
Tmin = 0.816, Tmax = 0.964 | Rint = 0.032 |
12102 measured reflections |
R[F2 > 2σ(F2)] = 0.048 | 0 restraints |
wR(F2) = 0.117 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.15 | Δρmax = 0.41 e Å−3 |
2617 reflections | Δρmin = −0.20 e Å−3 |
205 parameters |
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 | ||
C1 | 0.1795 (2) | 0.78238 (17) | 0.4365 (3) | 0.0450 (6) | |
C2 | 0.0744 (2) | 0.80223 (16) | 0.4774 (3) | 0.0422 (6) | |
C3 | −0.0003 (2) | 0.74059 (17) | 0.5022 (4) | 0.0512 (7) | |
H3 | −0.0704 | 0.7531 | 0.5307 | 0.061* | |
C4 | 0.0318 (3) | 0.66009 (18) | 0.4836 (4) | 0.0556 (7) | |
H4 | −0.0185 | 0.6183 | 0.4993 | 0.067* | |
C5 | 0.1359 (3) | 0.63832 (18) | 0.4425 (4) | 0.0524 (7) | |
C6 | 0.2108 (2) | 0.70089 (18) | 0.4188 (4) | 0.0498 (7) | |
H6 | 0.2812 | 0.6883 | 0.3913 | 0.060* | |
C7 | 0.1455 (2) | 0.93390 (16) | 0.4535 (3) | 0.0402 (6) | |
C8 | 0.3207 (2) | 1.09049 (15) | 0.6440 (3) | 0.0385 (6) | |
C9 | 0.4280 (2) | 1.05758 (17) | 0.6913 (4) | 0.0455 (6) | |
H9 | 0.4576 | 1.0234 | 0.6139 | 0.055* | |
C10 | 0.4905 (2) | 1.07537 (17) | 0.8519 (4) | 0.0469 (6) | |
H10 | 0.5630 | 1.0540 | 0.8824 | 0.056* | |
C11 | 0.4465 (2) | 1.12510 (15) | 0.9704 (3) | 0.0408 (6) | |
C12 | 0.3377 (2) | 1.15595 (17) | 0.9262 (4) | 0.0451 (6) | |
H12 | 0.3068 | 1.1877 | 1.0061 | 0.054* | |
C13 | 0.2755 (2) | 1.13914 (16) | 0.7626 (4) | 0.0440 (6) | |
H13 | 0.2030 | 1.1605 | 0.7316 | 0.053* | |
C14 | 0.4823 (3) | 1.1987 (2) | 1.2418 (4) | 0.0591 (8) | |
H14A | 0.4687 | 1.2510 | 1.1838 | 0.089* | |
H14B | 0.5405 | 1.2046 | 1.3429 | 0.089* | |
H14C | 0.4141 | 1.1798 | 1.2778 | 0.089* | |
C15 | 0.1682 (3) | 0.54964 (19) | 0.4239 (4) | 0.0669 (9) | |
H15A | 0.1849 | 0.5246 | 0.5379 | 0.100* | |
H15B | 0.2337 | 0.5469 | 0.3686 | 0.100* | |
H15C | 0.1068 | 0.5208 | 0.3534 | 0.100* | |
H1 | −0.003 (2) | 0.9100 (16) | 0.509 (3) | 0.046 (8)* | |
N1 | 0.05952 (18) | 0.88679 (13) | 0.4860 (3) | 0.0426 (5) | |
N2 | 0.13799 (17) | 1.01569 (13) | 0.4570 (3) | 0.0434 (5) | |
O1 | 0.31808 (16) | 1.03121 (12) | 0.3323 (2) | 0.0513 (5) | |
O2 | 0.19594 (16) | 1.14977 (12) | 0.3663 (3) | 0.0563 (5) | |
O3 | 0.51706 (16) | 1.14040 (12) | 1.1242 (3) | 0.0541 (5) | |
S1 | 0.24400 (5) | 1.07274 (4) | 0.43153 (8) | 0.0417 (2) | |
S2 | 0.25626 (5) | 0.87158 (5) | 0.40816 (9) | 0.0480 (2) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0430 (14) | 0.0497 (16) | 0.0401 (14) | 0.0028 (12) | 0.0015 (11) | −0.0023 (12) |
C2 | 0.0412 (13) | 0.0448 (15) | 0.0388 (13) | 0.0035 (12) | 0.0014 (11) | −0.0044 (11) |
C3 | 0.0462 (15) | 0.0451 (16) | 0.0613 (17) | −0.0012 (13) | 0.0062 (13) | −0.0020 (14) |
C4 | 0.0613 (18) | 0.0438 (16) | 0.0585 (18) | −0.0095 (14) | 0.0017 (14) | 0.0016 (13) |
C5 | 0.0669 (18) | 0.0441 (16) | 0.0414 (15) | 0.0084 (14) | −0.0041 (13) | −0.0028 (12) |
C6 | 0.0512 (16) | 0.0512 (17) | 0.0457 (15) | 0.0115 (13) | 0.0042 (12) | −0.0017 (12) |
C7 | 0.0334 (12) | 0.0466 (15) | 0.0395 (13) | −0.0003 (11) | 0.0039 (10) | −0.0051 (11) |
C8 | 0.0346 (12) | 0.0335 (13) | 0.0491 (14) | −0.0050 (10) | 0.0119 (11) | −0.0019 (11) |
C9 | 0.0432 (14) | 0.0447 (15) | 0.0512 (15) | 0.0082 (12) | 0.0150 (12) | −0.0060 (12) |
C10 | 0.0392 (14) | 0.0462 (16) | 0.0561 (16) | 0.0104 (12) | 0.0106 (12) | −0.0031 (12) |
C11 | 0.0416 (13) | 0.0344 (13) | 0.0472 (14) | −0.0011 (11) | 0.0097 (11) | 0.0001 (11) |
C12 | 0.0418 (14) | 0.0442 (15) | 0.0526 (16) | 0.0034 (12) | 0.0173 (12) | −0.0077 (12) |
C13 | 0.0313 (12) | 0.0462 (15) | 0.0557 (16) | 0.0038 (11) | 0.0108 (11) | −0.0052 (12) |
C14 | 0.0651 (19) | 0.0595 (19) | 0.0521 (17) | 0.0015 (15) | 0.0086 (14) | −0.0137 (14) |
C15 | 0.090 (2) | 0.0467 (18) | 0.0602 (19) | 0.0139 (17) | 0.0018 (17) | −0.0001 (15) |
N1 | 0.0339 (11) | 0.0405 (13) | 0.0538 (13) | 0.0021 (10) | 0.0084 (10) | −0.0054 (10) |
N2 | 0.0348 (11) | 0.0393 (12) | 0.0568 (13) | −0.0015 (9) | 0.0098 (10) | −0.0064 (10) |
O1 | 0.0471 (10) | 0.0587 (13) | 0.0518 (11) | −0.0061 (9) | 0.0184 (9) | −0.0104 (9) |
O2 | 0.0562 (12) | 0.0495 (12) | 0.0611 (12) | 0.0012 (9) | 0.0046 (10) | 0.0077 (9) |
O3 | 0.0507 (11) | 0.0564 (12) | 0.0532 (11) | 0.0081 (9) | 0.0031 (9) | −0.0098 (9) |
S1 | 0.0377 (3) | 0.0418 (4) | 0.0469 (4) | −0.0029 (3) | 0.0109 (3) | −0.0028 (3) |
S2 | 0.0389 (4) | 0.0487 (4) | 0.0582 (4) | 0.0048 (3) | 0.0137 (3) | −0.0031 (3) |
C1—C6 | 1.387 (4) | C9—H9 | 0.9300 |
C1—C2 | 1.391 (4) | C10—C11 | 1.392 (4) |
C1—S2 | 1.749 (3) | C10—H10 | 0.9300 |
C2—C3 | 1.378 (4) | C11—O3 | 1.359 (3) |
C2—N1 | 1.385 (3) | C11—C12 | 1.387 (4) |
C3—C4 | 1.375 (4) | C12—C13 | 1.381 (4) |
C3—H3 | 0.9300 | C12—H12 | 0.9300 |
C4—C5 | 1.388 (4) | C13—H13 | 0.9300 |
C4—H4 | 0.9300 | C14—O3 | 1.424 (3) |
C5—C6 | 1.389 (4) | C14—H14A | 0.9600 |
C5—C15 | 1.502 (4) | C14—H14B | 0.9600 |
C6—H6 | 0.9300 | C14—H14C | 0.9600 |
C7—N2 | 1.330 (3) | C15—H15A | 0.9600 |
C7—N1 | 1.343 (3) | C15—H15B | 0.9600 |
C7—S2 | 1.754 (3) | C15—H15C | 0.9600 |
C8—C9 | 1.385 (4) | N1—H1 | 0.89 (3) |
C8—C13 | 1.390 (3) | N2—S1 | 1.614 (2) |
C8—S1 | 1.764 (3) | O1—S1 | 1.4394 (19) |
C9—C10 | 1.367 (4) | O2—S1 | 1.431 (2) |
C6—C1—C2 | 121.0 (3) | C12—C11—C10 | 119.7 (2) |
C6—C1—S2 | 128.1 (2) | C13—C12—C11 | 119.5 (2) |
C2—C1—S2 | 110.9 (2) | C13—C12—H12 | 120.2 |
C3—C2—N1 | 128.2 (2) | C11—C12—H12 | 120.2 |
C3—C2—C1 | 120.1 (3) | C12—C13—C8 | 120.4 (2) |
N1—C2—C1 | 111.7 (2) | C12—C13—H13 | 119.8 |
C4—C3—C2 | 118.2 (3) | C8—C13—H13 | 119.8 |
C4—C3—H3 | 120.9 | O3—C14—H14A | 109.5 |
C2—C3—H3 | 120.9 | O3—C14—H14B | 109.5 |
C3—C4—C5 | 123.0 (3) | H14A—C14—H14B | 109.5 |
C3—C4—H4 | 118.5 | O3—C14—H14C | 109.5 |
C5—C4—H4 | 118.5 | H14A—C14—H14C | 109.5 |
C4—C5—C6 | 118.3 (3) | H14B—C14—H14C | 109.5 |
C4—C5—C15 | 121.6 (3) | C5—C15—H15A | 109.5 |
C6—C5—C15 | 120.1 (3) | C5—C15—H15B | 109.5 |
C1—C6—C5 | 119.3 (3) | H15A—C15—H15B | 109.5 |
C1—C6—H6 | 120.4 | C5—C15—H15C | 109.5 |
C5—C6—H6 | 120.4 | H15A—C15—H15C | 109.5 |
N2—C7—N1 | 120.4 (2) | H15B—C15—H15C | 109.5 |
N2—C7—S2 | 129.42 (19) | C7—N1—C2 | 116.3 (2) |
N1—C7—S2 | 110.18 (19) | C7—N1—H1 | 120.3 (17) |
C9—C8—C13 | 119.8 (2) | C2—N1—H1 | 123.4 (17) |
C9—C8—S1 | 119.73 (19) | C7—N2—S1 | 120.74 (17) |
C13—C8—S1 | 120.45 (19) | C11—O3—C14 | 118.2 (2) |
C10—C9—C8 | 119.9 (2) | O2—S1—O1 | 117.99 (12) |
C10—C9—H9 | 120.1 | O2—S1—N2 | 105.33 (12) |
C8—C9—H9 | 120.1 | O1—S1—N2 | 111.79 (11) |
C9—C10—C11 | 120.7 (2) | O2—S1—C8 | 107.49 (12) |
C9—C10—H10 | 119.7 | O1—S1—C8 | 107.55 (12) |
C11—C10—H10 | 119.7 | N2—S1—C8 | 106.02 (12) |
O3—C11—C12 | 124.7 (2) | C1—S2—C7 | 90.91 (12) |
O3—C11—C10 | 115.6 (2) | ||
C6—C1—C2—C3 | 0.4 (4) | S1—C8—C13—C12 | −177.1 (2) |
S2—C1—C2—C3 | 178.9 (2) | N2—C7—N1—C2 | 179.3 (2) |
C6—C1—C2—N1 | −179.0 (2) | S2—C7—N1—C2 | −0.1 (3) |
S2—C1—C2—N1 | −0.5 (3) | C3—C2—N1—C7 | −179.0 (3) |
N1—C2—C3—C4 | 178.7 (3) | C1—C2—N1—C7 | 0.4 (3) |
C1—C2—C3—C4 | −0.6 (4) | N1—C7—N2—S1 | 175.70 (19) |
C2—C3—C4—C5 | 0.5 (4) | S2—C7—N2—S1 | −5.1 (3) |
C3—C4—C5—C6 | −0.1 (4) | C12—C11—O3—C14 | −6.8 (4) |
C3—C4—C5—C15 | 179.8 (3) | C10—C11—O3—C14 | 172.5 (2) |
C2—C1—C6—C5 | −0.1 (4) | C7—N2—S1—O2 | 155.3 (2) |
S2—C1—C6—C5 | −178.3 (2) | C7—N2—S1—O1 | 25.9 (2) |
C4—C5—C6—C1 | −0.1 (4) | C7—N2—S1—C8 | −91.0 (2) |
C15—C5—C6—C1 | −180.0 (3) | C9—C8—S1—O2 | −134.5 (2) |
C13—C8—C9—C10 | −2.2 (4) | C13—C8—S1—O2 | 43.7 (2) |
S1—C8—C9—C10 | 176.0 (2) | C9—C8—S1—O1 | −6.5 (2) |
C8—C9—C10—C11 | 1.2 (4) | C13—C8—S1—O1 | 171.7 (2) |
C9—C10—C11—O3 | −178.4 (2) | C9—C8—S1—N2 | 113.2 (2) |
C9—C10—C11—C12 | 1.0 (4) | C13—C8—S1—N2 | −68.6 (2) |
O3—C11—C12—C13 | 177.1 (2) | C6—C1—S2—C7 | 178.7 (3) |
C10—C11—C12—C13 | −2.1 (4) | C2—C1—S2—C7 | 0.4 (2) |
C11—C12—C13—C8 | 1.1 (4) | N2—C7—S2—C1 | −179.5 (2) |
C9—C8—C13—C12 | 1.1 (4) | N1—C7—S2—C1 | −0.15 (19) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···N2i | 0.89 (2) | 2.07 (2) | 2.948 (3) | 169 (2) |
C3—H3···O2i | 0.93 | 2.41 | 3.248 (3) | 150 |
C6—H6···O3ii | 0.93 | 2.57 | 3.485 (3) | 169 |
C9—H9···O1 | 0.93 | 2.51 | 2.894 (3) | 105 |
C14—H14A···Cg3iii | 0.93 | 2.76 | 3.433 (3) | 128 |
Symmetry codes: (i) −x, −y+2, −z+1; (ii) −x+1, y−1/2, −z+3/2; (iii) x, −y+3/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | C15H14N2O3S2 |
Mr | 334.40 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 273 |
a, b, c (Å) | 12.0173 (15), 16.211 (2), 7.7377 (10) |
β (°) | 99.973 (2) |
V (Å3) | 1484.6 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.37 |
Crystal size (mm) | 0.57 × 0.16 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2003) |
Tmin, Tmax | 0.816, 0.964 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 12102, 2617, 2440 |
Rint | 0.032 |
(sin θ/λ)max (Å−1) | 0.594 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.048, 0.117, 1.15 |
No. of reflections | 2617 |
No. of parameters | 205 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.41, −0.20 |
Computer programs: SMART (Bruker, 2000), SAINT-Plus-NT (Bruker, 2000), SAINT-Plus-NT, SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Bruker, 2000), PLATON (Spek, 2003) and publCIF (Westrip, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···N2i | 0.89 (2) | 2.07 (2) | 2.948 (3) | 169 (2) |
C3—H3···O2i | 0.93 | 2.41 | 3.248 (3) | 150 |
C6—H6···O3ii | 0.93 | 2.57 | 3.485 (3) | 169 |
C9—H9···O1 | 0.93 | 2.51 | 2.894 (3) | 105 |
C14—H14A···Cg3iii | 0.93 | 2.76 | 3.433 (3) | 128 |
Symmetry codes: (i) −x, −y+2, −z+1; (ii) −x+1, y−1/2, −z+3/2; (iii) x, −y+3/2, z−1/2. |
Acknowledgements
This work was supported by CONACyT under grants 55591 and 3562P-E; PAPCA (FESI-UNAM), PAPIIT IN 203205 (DGAPA-UNAM).
References
Adams, H., Carver, F. J., Hunter, C. A., Morales, J. C. & Seward, E. M. (1996). Angew. Chem. Int. Ed. Engl. 35, 1542–1544. CSD CrossRef CAS Web of Science Google Scholar
Bernstein, J., Davis, R. E., Shimoni, L. & Chang, D.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555–1573. CrossRef CAS Web of Science Google Scholar
Bruker (2000). SMART (Version 5.618), SAINT-Plus-NT (Version 6.04) and SHELXTL-NT (Version 6.10). Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Desiraju, G. R. (1991). Acc. Chem. Res. 24, 290–296. CrossRef CAS Web of Science Google Scholar
Hanton, L. R., Hunter, C. A. & Purvis, D. H. (1992). J. Chem. Soc. Chem. Commun. pp. 1134–1136. CrossRef Web of Science Google Scholar
Hunter, C. A. (1994). Chem. Soc. Rev. pp. 101–109. CrossRef Web of Science Google Scholar
Sheldrick, G. M. (1997). SHELXS97 and SHELXL97. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2003). SADABS. Version 2.10. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Siddiqui, N., Pandeya, N. S., Khan, S. A., Stables, J., Rana, A., Alam, M., Arshad, M. F. & Bhat, M. A. (2007). Bioorg. Med. Chem. Lett. 17, 255–259. Web of Science CrossRef PubMed CAS Google Scholar
Spek, A. L. (2003). J. Appl. Cryst. 36, 7–13. Web of Science CrossRef CAS IUCr Journals Google Scholar
Su, X., Vicker, N., Ganeshapillai, D., Smith, A., Purohit, A., Reed, M. J. & Potter, B. V. L. (2006). Mol. Cell. Endocrinol. 248, 214-217. Web of Science CrossRef PubMed CAS Google Scholar
Vicker, N., Su, X., Ganeshapillai, D., Smith, A., Purohit, A., Reed, M. J. & Potter, B. V. L. (2007). J. Steroid Biochem. Mol. Biol. 104, 123–129. Web of Science CrossRef PubMed CAS Google Scholar
Westrip, S. P. (2008). publCIF. In preparation. Google Scholar
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.
Benzothiazole benzenesulfonamides are selective inhibitors of 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1). They have a considerable potential use for the treatment of metabolic diseases, such as diabetes mellitus type 2 or obesity (Su et al., 2006; Vicker et al., 2007). This kind of compounds have also shown anticonvulsant activity (Siddiqui et al., 2007).
In order to assist our knowledge about the electronic and steric requirements to shown antihyperglycemic activity, we have determined the crystal structure of the title compound, which is a new chemical entity with potential use in the treatment of diabetes.
The title compound (I) crystallizes in the centrosymmetric monoclinic space group P21/c. The crystal structure is stabilized by strong hydrogen-bonding interactions N1—H1···N2, and weak hydrogen bonding interactions C—H···O, which are forming R22(8) motifs (Bernstein et al., 1995) Fig. 1, Table 2. In the crystal packing there are also π-facial hydrogen bonds between the methoxy group (C14) and C8—C13 benzene ring (O—CH3···π) (Hanton et al., 1992; Adams et al., 1996, Desiraju, 1991). The distance between C14 and the ring centroid (Cg3) is 3.433 (3) Å (Fig. 2, Table 2).
The crystal structure is also stabilized by offset π-π interactions between two adjacent molecules, with a distance between the centroids of the C1—C6 benzene ring (Cg2) and (S2/C7/N1/C2/C1) benzothiazol ring (Cg1) of 3.954 (2) Å (Fig. 2). This interaction is favourable by effect of polarization of the sulfonamid group (Hunter, 1994).