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The title benzo­thia­zine-3-carboxamide, C17H16N2O4S, crystallized in two enanti­omorphic crystal forms with the space groups P32 and P31 despite the absence of a classic stereogenic atom. The mol­ecular structures are mirror images of each other. Only one sulfonyl O atom takes part in intra­molecular hydrogen bonding as a proton acceptor and this atom is different in the two enanti­omorphic structures. As a result, the S atom becomes a pseudo-stereogenic centre. This fact is worth taking into account due to the different biological activities of the enanti­omorphic forms. One form possesses a high analgesic activity, while the other form revealed a high anti-inflammatory activity.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S2053229619016450/ku3258sup1.cif
Contains datablocks 1A, 1B, global

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S2053229619016450/ku32581Asup2.hkl
Contains datablock 1A

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S2053229619016450/ku32581Bsup3.hkl
Contains datablock 1B

CCDC references: 1957251; 1957252

Computing details top

Data collection: CrysAlis CCD (Agilent, 2012) for (1A); CrysAlis PRO (Agilent, 2013) for (1B). Cell refinement: CrysAlis CCD (Agilent, 2012) for (1A); CrysAlis PRO (Agilent, 2013) for (1B). Data reduction: CrysAlis RED (Agilent, 2012) for (1A); CrysAlis PRO (Agilent, 2013) for (1B). For both structures, program(s) used to solve structure: SHELXT (Sheldrick, 2015a); program(s) used to refine structure: SHELXL2016 (Sheldrick, 2015b); software used to prepare material for publication: SHELXL2016 (Sheldrick, 2015b).

N-(2,6-Dimethylphenyl)-4-hydroxy-2,2-dioxo-1H-2λ6,1-\ benzothiazine-3-carboxamide (1A) top
Crystal data top
C17H16N2O4SDx = 1.411 Mg m3
Mr = 344.38Mo Kα radiation, λ = 0.71073 Å
Trigonal, P32Cell parameters from 4175 reflections
a = 8.3729 (2) Åθ = 3.5–30.8°
c = 20.0206 (6) ŵ = 0.22 mm1
V = 1215.51 (7) Å3T = 293 K
Z = 3Block, colorless
F(000) = 5400.30 × 0.14 × 0.13 mm
Data collection top
Agilent Xcalibur Sapphire3
diffractometer
4446 independent reflections
Radiation source: Enhance (Mo) X-ray Source3787 reflections with I > 2σ(I)
Detector resolution: 16.1827 pixels mm-1Rint = 0.022
ω scansθmax = 30.0°, θmin = 3.0°
Absorption correction: multi-scan
(CrysAlis RED; Agilent, 2012)
h = 1011
Tmin = 0.974, Tmax = 1.000k = 119
12429 measured reflectionsl = 2128
Refinement top
Refinement on F2Hydrogen site location: mixed
Least-squares matrix: fullH atoms treated by a mixture of independent and constrained refinement
R[F2 > 2σ(F2)] = 0.036 w = 1/[σ2(Fo2) + (0.0521P)2 + 0.0047P]
where P = (Fo2 + 2Fc2)/3
wR(F2) = 0.093(Δ/σ)max < 0.001
S = 1.04Δρmax = 0.19 e Å3
4446 reflectionsΔρmin = 0.26 e Å3
231 parametersAbsolute structure: Flack x determined using 1505 quotients [(I+)-(I-)]/[(I+)+(I-)] (Parsons et al., 2013)
1 restraintAbsolute structure parameter: 0.00 (6)
Special details top

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
S11.00522 (10)0.52328 (8)0.06771 (3)0.04135 (15)
O10.7732 (3)0.0045 (2)0.11781 (9)0.0485 (5)
H1O0.722 (6)0.022 (6)0.154 (2)0.077 (12)*
O20.7127 (3)0.1748 (2)0.20978 (8)0.0475 (4)
O31.1918 (3)0.5878 (3)0.08652 (10)0.0570 (5)
O40.9361 (4)0.6481 (3)0.07392 (11)0.0619 (6)
N10.9764 (4)0.4573 (3)0.00925 (10)0.0449 (5)
H1N0.930 (6)0.493 (6)0.036 (2)0.084 (13)*
N20.7901 (4)0.4729 (4)0.19574 (11)0.0495 (6)
H2N0.823 (4)0.563 (5)0.1679 (17)0.054 (9)*
C10.9804 (4)0.2970 (4)0.02674 (12)0.0399 (5)
C21.0313 (4)0.2796 (4)0.09147 (12)0.0522 (7)
H21.0631780.3733890.1225220.063*
C31.0338 (5)0.1211 (5)0.10885 (14)0.0585 (8)
H31.0634570.1065840.1523420.070*
C40.9929 (5)0.0150 (4)0.06268 (15)0.0572 (7)
H41.0009270.1182020.0744740.069*
C50.9399 (4)0.0003 (4)0.00128 (14)0.0476 (6)
H50.9103750.0935720.0320980.057*
C60.9304 (3)0.1554 (3)0.01969 (11)0.0370 (5)
C70.8568 (3)0.1631 (3)0.08478 (11)0.0355 (5)
C80.8665 (3)0.3195 (3)0.11064 (11)0.0357 (5)
C90.7844 (3)0.3184 (3)0.17522 (11)0.0380 (5)
C100.7393 (4)0.5035 (4)0.26062 (12)0.0465 (6)
C110.8485 (5)0.5192 (4)0.31508 (15)0.0555 (7)
C120.7994 (7)0.5637 (5)0.37604 (16)0.0769 (11)
H120.8682110.5744710.4139630.092*
C130.6526 (7)0.5917 (5)0.38125 (18)0.0800 (12)
H130.6237330.6223670.4223980.096*
C140.5493 (6)0.5754 (5)0.32740 (18)0.0702 (9)
H140.4493140.5942120.3320120.084*
C150.5889 (5)0.5313 (4)0.26530 (15)0.0558 (7)
C161.0125 (6)0.4951 (6)0.3090 (2)0.0798 (11)
H16C0.9725890.3667990.3029990.120*
H16B1.0855570.5393010.3488590.120*
H16A1.0849920.5637630.2712430.120*
C170.4744 (6)0.5181 (8)0.2058 (2)0.0894 (13)
H17C0.5537190.5912180.1699920.134*
H17B0.3925620.5628980.2173930.134*
H17A0.4036840.3918250.1917370.134*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
S10.0566 (4)0.0343 (3)0.0352 (2)0.0242 (3)0.0058 (2)0.0060 (2)
O10.0662 (13)0.0356 (9)0.0441 (10)0.0258 (9)0.0120 (9)0.0088 (7)
O20.0582 (12)0.0434 (10)0.0406 (9)0.0251 (9)0.0138 (8)0.0080 (8)
O30.0507 (11)0.0506 (12)0.0513 (11)0.0116 (9)0.0003 (9)0.0041 (9)
O40.1044 (18)0.0473 (10)0.0526 (11)0.0518 (12)0.0177 (11)0.0121 (8)
N10.0680 (15)0.0482 (12)0.0302 (10)0.0378 (12)0.0007 (9)0.0068 (8)
N20.0709 (16)0.0501 (13)0.0404 (11)0.0399 (12)0.0142 (11)0.0055 (9)
C10.0478 (14)0.0454 (13)0.0321 (10)0.0276 (11)0.0014 (9)0.0003 (9)
C20.0662 (19)0.0601 (17)0.0323 (11)0.0330 (15)0.0038 (11)0.0010 (11)
C30.072 (2)0.0692 (19)0.0392 (14)0.0388 (17)0.0070 (13)0.0089 (13)
C40.071 (2)0.0527 (17)0.0546 (16)0.0357 (16)0.0040 (14)0.0120 (13)
C50.0573 (16)0.0422 (14)0.0472 (13)0.0278 (13)0.0026 (11)0.0022 (11)
C60.0418 (12)0.0379 (12)0.0350 (10)0.0225 (10)0.0007 (9)0.0010 (9)
C70.0403 (12)0.0343 (11)0.0348 (10)0.0209 (10)0.0018 (9)0.0047 (8)
C80.0421 (12)0.0349 (11)0.0342 (10)0.0224 (10)0.0040 (9)0.0040 (8)
C90.0407 (12)0.0419 (12)0.0350 (11)0.0234 (11)0.0046 (9)0.0038 (9)
C100.0604 (16)0.0419 (13)0.0403 (12)0.0279 (13)0.0079 (11)0.0023 (10)
C110.074 (2)0.0424 (15)0.0498 (14)0.0290 (15)0.0042 (13)0.0005 (12)
C120.127 (3)0.057 (2)0.0428 (15)0.043 (2)0.0130 (19)0.0041 (13)
C130.124 (3)0.063 (2)0.0522 (19)0.047 (2)0.026 (2)0.0041 (15)
C140.082 (2)0.063 (2)0.069 (2)0.0384 (19)0.0248 (18)0.0076 (16)
C150.0611 (18)0.0527 (16)0.0582 (16)0.0319 (15)0.0080 (14)0.0099 (13)
C160.079 (3)0.071 (2)0.096 (3)0.042 (2)0.028 (2)0.010 (2)
C170.093 (3)0.120 (4)0.087 (3)0.077 (3)0.017 (2)0.028 (3)
Geometric parameters (Å, º) top
S1—O31.425 (2)C5—H50.9300
S1—O41.431 (2)C6—C71.457 (3)
S1—N11.614 (2)C7—C81.372 (3)
S1—C81.737 (2)C8—C91.463 (3)
O1—C71.327 (3)C10—C111.386 (4)
O1—H1O0.89 (4)C10—C151.394 (4)
O2—C91.251 (3)C11—C121.397 (5)
N1—C11.404 (3)C11—C161.489 (6)
N1—H1N0.81 (5)C12—C131.366 (6)
N2—C91.334 (3)C12—H120.9300
N2—C101.429 (3)C13—C141.346 (6)
N2—H2N0.86 (4)C13—H130.9300
C1—C21.394 (3)C14—C151.384 (4)
C1—C61.396 (3)C14—H140.9300
C2—C31.382 (4)C15—C171.499 (5)
C2—H20.9300C16—H16C0.9600
C3—C41.371 (5)C16—H16B0.9600
C3—H30.9300C16—H16A0.9600
C4—C51.382 (4)C17—H17C0.9600
C4—H40.9300C17—H17B0.9600
C5—C61.390 (3)C17—H17A0.9600
O3—S1—O4117.87 (15)C7—C8—S1116.25 (17)
O3—S1—N1109.27 (13)C9—C8—S1121.66 (18)
O4—S1—N1106.68 (13)O2—C9—N2122.0 (2)
O3—S1—C8108.02 (12)O2—C9—C8119.5 (2)
O4—S1—C8111.01 (13)N2—C9—C8118.5 (2)
N1—S1—C8102.95 (12)C11—C10—C15122.6 (3)
C7—O1—H1O107 (3)C11—C10—N2119.4 (3)
C1—N1—S1119.64 (17)C15—C10—N2117.8 (3)
C1—N1—H1N116 (3)C10—C11—C12116.4 (3)
S1—N1—H1N122 (3)C10—C11—C16122.1 (3)
C9—N2—C10125.7 (2)C12—C11—C16121.5 (3)
C9—N2—H2N119 (2)C13—C12—C11121.5 (3)
C10—N2—H2N115 (2)C13—C12—H12119.2
C2—C1—C6120.5 (2)C11—C12—H12119.2
C2—C1—N1119.1 (2)C14—C13—C12120.6 (3)
C6—C1—N1120.4 (2)C14—C13—H13119.7
C3—C2—C1119.1 (3)C12—C13—H13119.7
C3—C2—H2120.4C13—C14—C15121.3 (4)
C1—C2—H2120.4C13—C14—H14119.4
C4—C3—C2120.7 (2)C15—C14—H14119.4
C4—C3—H3119.6C14—C15—C10117.5 (3)
C2—C3—H3119.6C14—C15—C17120.3 (3)
C3—C4—C5120.4 (3)C10—C15—C17122.2 (3)
C3—C4—H4119.8C11—C16—H16C109.5
C5—C4—H4119.8C11—C16—H16B109.5
C4—C5—C6120.2 (3)H16C—C16—H16B109.5
C4—C5—H5119.9C11—C16—H16A109.5
C6—C5—H5119.9H16C—C16—H16A109.5
C5—C6—C1119.0 (2)H16B—C16—H16A109.5
C5—C6—C7120.1 (2)C15—C17—H17C109.5
C1—C6—C7120.8 (2)C15—C17—H17B109.5
O1—C7—C8121.1 (2)H17C—C17—H17B109.5
O1—C7—C6115.1 (2)C15—C17—H17A109.5
C8—C7—C6123.7 (2)H17C—C17—H17A109.5
C7—C8—C9121.6 (2)H17B—C17—H17A109.5
O3—S1—N1—C170.0 (2)N1—S1—C8—C735.3 (2)
O4—S1—N1—C1161.5 (2)O3—S1—C8—C992.1 (2)
C8—S1—N1—C144.6 (2)O4—S1—C8—C938.6 (2)
S1—N1—C1—C2153.8 (2)N1—S1—C8—C9152.4 (2)
S1—N1—C1—C627.5 (4)C10—N2—C9—O28.2 (4)
C6—C1—C2—C30.7 (4)C10—N2—C9—C8171.2 (3)
N1—C1—C2—C3179.5 (3)C7—C8—C9—O24.3 (4)
C1—C2—C3—C42.2 (5)S1—C8—C9—O2167.6 (2)
C2—C3—C4—C53.1 (5)C7—C8—C9—N2176.4 (2)
C3—C4—C5—C61.1 (5)S1—C8—C9—N211.7 (3)
C4—C5—C6—C11.8 (4)C9—N2—C10—C1169.3 (4)
C4—C5—C6—C7173.8 (3)C9—N2—C10—C15115.8 (3)
C2—C1—C6—C52.7 (4)C15—C10—C11—C120.4 (4)
N1—C1—C6—C5178.5 (2)N2—C10—C11—C12175.0 (3)
C2—C1—C6—C7172.9 (2)C15—C10—C11—C16178.0 (3)
N1—C1—C6—C75.9 (4)N2—C10—C11—C163.4 (4)
C5—C6—C7—O111.3 (3)C10—C11—C12—C130.6 (5)
C1—C6—C7—O1164.2 (2)C16—C11—C12—C13177.8 (4)
C5—C6—C7—C8170.4 (3)C11—C12—C13—C140.6 (6)
C1—C6—C7—C814.1 (4)C12—C13—C14—C150.5 (6)
O1—C7—C8—C90.5 (4)C13—C14—C15—C100.3 (5)
C6—C7—C8—C9177.7 (2)C13—C14—C15—C17178.6 (4)
O1—C7—C8—S1171.8 (2)C11—C10—C15—C140.3 (5)
C6—C7—C8—S110.0 (3)N2—C10—C15—C14175.0 (3)
O3—S1—C8—C780.2 (2)C11—C10—C15—C17178.6 (4)
O4—S1—C8—C7149.1 (2)N2—C10—C15—C173.9 (5)
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
O1—H1O···O20.89 (4)1.73 (5)2.530 (3)148 (4)
N2—H2N···O40.86 (4)2.07 (4)2.793 (3)141 (3)
N1—H1N···O2i0.81 (5)2.07 (5)2.855 (3)164 (4)
Symmetry code: (i) y+1, xy, z1/3.
N-(2,6-Dimethylphenyl)-4-hydroxy-2,2-dioxo-1H-2λ6,1-\ benzothiazine-3-carboxamide (1B) top
Crystal data top
C17H16N2O4SDx = 1.411 Mg m3
Mr = 344.38Mo Kα radiation, λ = 0.71073 Å
Trigonal, P31Cell parameters from 2136 reflections
a = 8.3735 (3) Åθ = 4.1–29.8°
c = 20.0299 (8) ŵ = 0.22 mm1
V = 1216.25 (10) Å3T = 293 K
Z = 3Block, colorless
F(000) = 5400.20 × 0.10 × 0.10 mm
Data collection top
Xcalibur, Sapphire3
diffractometer
4687 independent reflections
Radiation source: Enhance (Mo) X-ray Source3771 reflections with I > 2σ(I)
Detector resolution: 16.1827 pixels mm-1Rint = 0.054
ω scansθmax = 30.0°, θmin = 3.0°
Absorption correction: multi-scan
(CrysAlis PRO; Agilent, 2013)
h = 1111
Tmin = 0.646, Tmax = 1.000k = 1111
12184 measured reflectionsl = 2827
Refinement top
Refinement on F2H atoms treated by a mixture of independent and constrained refinement
Least-squares matrix: full w = 1/[σ2(Fo2) + (0.0406P)2]
where P = (Fo2 + 2Fc2)/3
R[F2 > 2σ(F2)] = 0.045(Δ/σ)max = 0.008
wR(F2) = 0.102Δρmax = 0.27 e Å3
S = 1.00Δρmin = 0.21 e Å3
4687 reflectionsExtinction correction: SHELXL2016 (Sheldrick, 2015b), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
232 parametersExtinction coefficient: 0.011 (3)
1 restraintAbsolute structure: Flack x determined using 1397 quotients [(I+)-(I-)]/[(I+)+(I-)] (Parsons et al., 2013)
Hydrogen site location: mixedAbsolute structure parameter: 0.00 (5)
Special details top

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
S10.32812 (12)0.14350 (10)0.44036 (3)0.0416 (2)
O10.5600 (3)0.6621 (3)0.39035 (12)0.0489 (6)
H1O0.611 (6)0.648 (6)0.353 (2)0.065 (12)*
O20.6209 (3)0.4920 (3)0.29834 (10)0.0476 (6)
O30.3975 (4)0.0190 (3)0.43428 (13)0.0617 (7)
O40.1418 (3)0.0781 (3)0.42140 (11)0.0569 (6)
N10.3562 (4)0.2091 (4)0.51740 (12)0.0453 (6)
H1N0.411 (6)0.180 (6)0.543 (2)0.069 (13)*
N20.5431 (4)0.1938 (4)0.31231 (14)0.0499 (7)
H2N0.513 (5)0.107 (6)0.339 (2)0.061 (12)*
C10.3526 (4)0.3697 (4)0.53486 (14)0.0397 (7)
C20.3021 (5)0.3878 (5)0.59942 (15)0.0531 (9)
H20.2702190.2939870.6304620.064*
C30.2996 (6)0.5459 (6)0.61700 (16)0.0585 (10)
H30.2703220.5605660.6605070.070*
C40.3402 (5)0.6812 (5)0.57072 (18)0.0573 (9)
H40.3319020.7843520.5823980.069*
C50.3932 (5)0.6660 (4)0.50695 (17)0.0478 (7)
H50.4227810.7600270.4762090.057*
C60.4026 (4)0.5110 (4)0.48837 (13)0.0369 (6)
C70.4762 (4)0.5034 (4)0.42343 (14)0.0360 (6)
C80.4672 (4)0.3474 (4)0.39742 (14)0.0360 (6)
C90.5490 (4)0.3483 (4)0.33303 (13)0.0372 (6)
C100.5940 (5)0.1636 (4)0.24751 (15)0.0464 (7)
C110.4850 (6)0.1478 (5)0.19313 (18)0.0576 (9)
C120.5340 (8)0.1029 (6)0.1320 (2)0.0773 (13)
H120.4649380.0917890.0941650.093*
C130.6808 (8)0.0753 (6)0.1268 (2)0.0800 (14)
H130.7098590.0449300.0856940.096*
C140.7843 (6)0.0915 (6)0.1809 (2)0.0697 (11)
H140.8844430.0730370.1763300.084*
C150.7440 (5)0.1350 (5)0.24254 (18)0.0554 (9)
C160.3195 (6)0.1712 (6)0.1990 (3)0.0793 (13)
H16A0.2432470.1206910.1602010.119*
H16B0.3587300.2999620.2025850.119*
H16C0.2504280.1078720.2381230.119*
C170.8586 (7)0.1481 (8)0.3022 (3)0.0888 (15)
H17A0.9427800.1064420.2902920.133*
H17B0.7794810.0724200.3375560.133*
H17C0.9268660.2739350.3169890.133*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
S10.0570 (5)0.0346 (4)0.0354 (3)0.0247 (4)0.0055 (3)0.0055 (3)
O10.0650 (15)0.0365 (12)0.0453 (12)0.0255 (11)0.0128 (12)0.0087 (10)
O20.0576 (14)0.0457 (13)0.0411 (11)0.0270 (11)0.0133 (10)0.0085 (10)
O30.102 (2)0.0482 (13)0.0524 (13)0.0509 (14)0.0151 (13)0.0107 (11)
O40.0524 (14)0.0502 (14)0.0506 (13)0.0125 (11)0.0008 (11)0.0046 (11)
N10.0666 (19)0.0485 (15)0.0327 (12)0.0377 (15)0.0004 (12)0.0065 (11)
N20.0696 (19)0.0509 (17)0.0417 (14)0.0394 (15)0.0141 (14)0.0057 (13)
C10.0461 (17)0.0440 (17)0.0329 (12)0.0254 (14)0.0019 (13)0.0017 (12)
C20.067 (2)0.060 (2)0.0342 (14)0.0332 (19)0.0037 (15)0.0017 (15)
C30.072 (3)0.067 (2)0.0393 (17)0.036 (2)0.0069 (16)0.0093 (17)
C40.067 (2)0.055 (2)0.056 (2)0.0348 (19)0.0049 (18)0.0106 (17)
C50.058 (2)0.0424 (17)0.0477 (16)0.0289 (16)0.0048 (15)0.0006 (14)
C60.0396 (14)0.0366 (14)0.0360 (13)0.0201 (12)0.0001 (12)0.0010 (12)
C70.0403 (15)0.0327 (14)0.0366 (13)0.0194 (12)0.0002 (12)0.0048 (11)
C80.0438 (15)0.0351 (14)0.0340 (12)0.0233 (12)0.0035 (12)0.0043 (11)
C90.0414 (15)0.0403 (15)0.0341 (14)0.0236 (13)0.0022 (12)0.0037 (12)
C100.059 (2)0.0413 (16)0.0418 (15)0.0270 (16)0.0096 (15)0.0016 (13)
C110.077 (3)0.0451 (19)0.0514 (18)0.0314 (19)0.0052 (18)0.0005 (16)
C120.127 (4)0.057 (2)0.0437 (19)0.043 (3)0.012 (2)0.0032 (17)
C130.126 (4)0.062 (3)0.053 (2)0.048 (3)0.026 (3)0.0038 (19)
C140.077 (3)0.064 (2)0.070 (3)0.037 (2)0.022 (2)0.008 (2)
C150.059 (2)0.0499 (19)0.058 (2)0.0285 (17)0.0068 (17)0.0110 (16)
C160.077 (3)0.071 (3)0.097 (3)0.043 (2)0.027 (3)0.010 (3)
C170.092 (3)0.121 (4)0.085 (3)0.077 (3)0.017 (3)0.028 (3)
Geometric parameters (Å, º) top
S1—O41.423 (3)C5—H50.9300
S1—O31.430 (3)C6—C71.454 (4)
S1—N11.615 (3)C7—C81.373 (4)
S1—C81.739 (3)C8—C91.459 (4)
O1—C71.329 (3)C10—C111.384 (5)
O1—H1O0.89 (4)C10—C151.395 (5)
O2—C91.253 (3)C11—C121.400 (6)
N1—C11.405 (4)C11—C161.499 (6)
N1—H1N0.80 (5)C12—C131.364 (7)
N2—C91.335 (4)C12—H120.9300
N2—C101.428 (4)C13—C141.350 (7)
N2—H2N0.84 (4)C13—H130.9300
C1—C21.392 (4)C14—C151.377 (5)
C1—C61.395 (4)C14—H140.9300
C2—C31.380 (5)C15—C171.502 (6)
C2—H20.9300C16—H16A0.9600
C3—C41.369 (5)C16—H16B0.9600
C3—H30.9300C16—H16C0.9600
C4—C51.379 (5)C17—H17A0.9600
C4—H40.9300C17—H17B0.9600
C5—C61.390 (4)C17—H17C0.9600
O4—S1—O3117.65 (17)C7—C8—S1116.0 (2)
O4—S1—N1109.32 (16)C9—C8—S1121.6 (2)
O3—S1—N1106.64 (15)O2—C9—N2121.7 (3)
O4—S1—C8108.24 (14)O2—C9—C8119.6 (3)
O3—S1—C8110.91 (15)N2—C9—C8118.7 (3)
N1—S1—C8103.09 (15)C11—C10—C15122.3 (3)
C7—O1—H1O109 (3)C11—C10—N2119.4 (3)
C1—N1—S1119.6 (2)C15—C10—N2118.0 (3)
C1—N1—H1N115 (3)C10—C11—C12116.5 (4)
S1—N1—H1N121 (3)C10—C11—C16122.3 (3)
C9—N2—C10125.8 (3)C12—C11—C16121.2 (4)
C9—N2—H2N119 (3)C13—C12—C11121.5 (4)
C10—N2—H2N115 (3)C13—C12—H12119.3
C2—C1—C6120.5 (3)C11—C12—H12119.3
C2—C1—N1119.2 (3)C14—C13—C12120.6 (4)
C6—C1—N1120.3 (3)C14—C13—H13119.7
C3—C2—C1119.5 (3)C12—C13—H13119.7
C3—C2—H2120.3C13—C14—C15121.1 (4)
C1—C2—H2120.3C13—C14—H14119.5
C4—C3—C2120.3 (3)C15—C14—H14119.5
C4—C3—H3119.8C14—C15—C10118.0 (4)
C2—C3—H3119.8C14—C15—C17120.1 (4)
C3—C4—C5120.6 (3)C10—C15—C17121.9 (3)
C3—C4—H4119.7C11—C16—H16A109.5
C5—C4—H4119.7C11—C16—H16B109.5
C4—C5—C6120.4 (3)H16A—C16—H16B109.5
C4—C5—H5119.8C11—C16—H16C109.5
C6—C5—H5119.8H16A—C16—H16C109.5
C5—C6—C1118.7 (3)H16B—C16—H16C109.5
C5—C6—C7120.2 (3)C15—C17—H17A109.5
C1—C6—C7120.9 (3)C15—C17—H17B109.5
O1—C7—C8120.9 (3)H17A—C17—H17B109.5
O1—C7—C6115.2 (2)C15—C17—H17C109.5
C8—C7—C6123.9 (3)H17A—C17—H17C109.5
C7—C8—C9121.9 (3)H17B—C17—H17C109.5
O4—S1—N1—C170.5 (3)N1—S1—C8—C735.3 (3)
O3—S1—N1—C1161.3 (3)O4—S1—C8—C991.7 (3)
C8—S1—N1—C144.4 (3)O3—S1—C8—C938.8 (3)
S1—N1—C1—C2154.1 (3)N1—S1—C8—C9152.6 (2)
S1—N1—C1—C627.1 (4)C10—N2—C9—O28.0 (5)
C6—C1—C2—C30.8 (5)C10—N2—C9—C8171.2 (3)
N1—C1—C2—C3179.5 (3)C7—C8—C9—O24.1 (4)
C1—C2—C3—C42.3 (6)S1—C8—C9—O2167.6 (2)
C2—C3—C4—C53.4 (6)C7—C8—C9—N2176.7 (3)
C3—C4—C5—C61.3 (6)S1—C8—C9—N211.7 (4)
C4—C5—C6—C11.7 (5)C9—N2—C10—C1169.6 (5)
C4—C5—C6—C7173.7 (3)C9—N2—C10—C15115.9 (4)
C2—C1—C6—C52.8 (5)C15—C10—C11—C120.6 (5)
N1—C1—C6—C5178.5 (3)N2—C10—C11—C12174.8 (3)
C2—C1—C6—C7172.7 (3)C15—C10—C11—C16177.5 (4)
N1—C1—C6—C76.0 (5)N2—C10—C11—C163.3 (5)
C5—C6—C7—O111.2 (4)C10—C11—C12—C130.4 (6)
C1—C6—C7—O1164.2 (3)C16—C11—C12—C13177.7 (4)
C5—C6—C7—C8170.6 (3)C11—C12—C13—C140.4 (7)
C1—C6—C7—C814.0 (4)C12—C13—C14—C150.5 (7)
O1—C7—C8—C90.3 (4)C13—C14—C15—C100.6 (6)
C6—C7—C8—C9177.8 (3)C13—C14—C15—C17178.6 (4)
O1—C7—C8—S1171.8 (2)C11—C10—C15—C140.7 (5)
C6—C7—C8—S110.1 (4)N2—C10—C15—C14175.0 (3)
O4—S1—C8—C780.4 (3)C11—C10—C15—C17178.5 (4)
O3—S1—C8—C7149.1 (2)N2—C10—C15—C174.2 (5)
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N2—H2N···O30.84 (4)2.09 (4)2.795 (4)141 (4)
O1—H1O···O20.89 (4)1.74 (4)2.532 (3)146 (4)
N1—H1N···O2i0.80 (5)2.09 (5)2.857 (3)161 (4)
Symmetry code: (i) y+1, xy, z+1/3.
Selected geometric parameters for molecules 1A and 1B top
ParameterMolecule 1AMolecule 1B
Ring-puckering parameters (Zefirov et al., 1990)
S0.560.56
Θ (°)52.752.8
Ψ (°)16.916.4
Atom deviation from the mean plane of the remaining atoms of the ring (Å)
S10.746 (1)-0.761 (1)
C80.178 (4)-0.195 (3)
Bond lengths (Å)
C9—O21.251 (3)1.253 (3)
O1—C71.327 (3)1.329 (4)
C7—C81.372 (3)1.373 (4)
C8—C91.463 (3)1.459 (4)
N1—C11.404 (3)1.405 (4)
Torsion angles (°)
C1—N1—S1—C8-44.6 (2)44.4 (3)
N1—S1—C8—C735.3 (2)-35.3 (3)
C10—N2—C9—C8-171.2 (3)171.2 (3)
C9—N2—C10—C1169.3 (4)-69.6 (5)
C7—C8—C9—O24.3 (4)-4.1 (5)
Geometric characteristics of the intramolecular and intermolecular hydrogen bonds (Å, °) in 1A and 1B top
InteractionD—HH···AD···AD—H···A
Structure 1A
O1—H1O···O20.89 (4)1.73 (5)2.530 (3)148 (4)
N2—H2N···O40.86 (4)2.07 (4)2.793 (3)141 (3)
N1—H1N···O2i0.81 (5)2.07 (5)2.855 (3)164 (4)
C5—H5···O4ii0.932.433.274 (5)151
C6···C14 (ππ)iiiDistance between atoms = 3.751 (4) Å
Structure 1B
O1—H1O···O20.89 (4)1.74 (4)2.532 (3)146 (4)
N2—H2N···O30.84 (4)2.09 (4)2.795 (4)141 (4)
N1—H1N···O2iv0.80 (5)2.09 (5)2.857 (3)161 (4)
C5—H5···O3v0.932.433.279 (5)151
C6···C14 (ππ)viDistance between atoms = 3.753 (6) Å
Symmetry codes: (i) -y+1, x-y, z-1/3; (ii) x, y-1, z; (iii) -x+1, x-y, z-1/3; (iv) -y+1, x-y, z+1/3; (v) x, y+1, z; (vi) -y+1, x-y, z+1/3.
Melting parameters of 1A and 1B crystals by the evidence of DSC (mean values and standard deviations are represented) top
StructureT (K)T (°C)ΔH (kJ kg-1)ΔH (kcal mol-1)
1A514,63 ± 0,25241,48 ± 0,25109,8 ± 0,89,03 ± 0,07
1B515,73 ± 0,23242,68 ± 0,23109,7 ± 0,99,02 ± 0,07
The analgesic activity of 1A, 1B and meloxicam top
ProductPain threshold on damaged extremity (g mm-2)Pain threshold on non-damaged extremity (g mm-2)Δ Pain thresholdAnalgesic activity compared to control (%)
1A428.0 ± 26.5347.5 ± 20.780.5 ± 8.61,264.7
1B431.0 ± 17.2263.0 ± 14.6168.0 ± 9.301,226.3
Meloxicam362.0 ± 34.9294.0 ± 28.868.0 ± 7.9170.2
Control422.0 ± 14.9194.0 ± 16.3228.0 ± 9.700
Notes: (1) differences statistically significant for p 0.05 versus control; (2) differences statistically significant for p 0.05 versus meloxicam.
The anti-inflammatory activity of 1A, 1B and meloxicam top
ProductVolume of damaged extremity (mm3)Volume of nondamaged extremity (mm3)Δ Volume (volume increase)Anti-inflammatory activity compared to control (%)
1A610.4 ± 53.3386.8 ± 51.9233.6 ± 27.51,222.1
1B519.2 ± 33.0405.7 ± 30.0113.5 ± 23.71,262.2
Meloxicam577.4 ± 55.9435.0 ± 44.5142.4 ± 33.2152.5
Control633.2 ± 44.3333.3 ± 27.9299.9 ± 28.20
Notes: (1) differences statistically significant for p 0.05 versus control; (2) differences statistically significant for p 0.05 versus meloxicam.
 

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