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
CCDC references: 1957251; 1957252
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-1
H-2
λ6,1-\
benzothiazine-3-carboxamide (1A)
top
Crystal data top
C17H16N2O4S | Dx = 1.411 Mg m−3 |
Mr = 344.38 | Mo Kα radiation, λ = 0.71073 Å |
Trigonal, P32 | Cell parameters from 4175 reflections |
a = 8.3729 (2) Å | θ = 3.5–30.8° |
c = 20.0206 (6) Å | µ = 0.22 mm−1 |
V = 1215.51 (7) Å3 | T = 293 K |
Z = 3 | Block, colorless |
F(000) = 540 | 0.30 × 0.14 × 0.13 mm |
Data collection top
Agilent Xcalibur Sapphire3 diffractometer | 4446 independent reflections |
Radiation source: Enhance (Mo) X-ray Source | 3787 reflections with I > 2σ(I) |
Detector resolution: 16.1827 pixels mm-1 | Rint = 0.022 |
ω scans | θmax = 30.0°, θmin = 3.0° |
Absorption correction: multi-scan (CrysAlis RED; Agilent, 2012) | h = −10→11 |
Tmin = 0.974, Tmax = 1.000 | k = −11→9 |
12429 measured reflections | l = −21→28 |
Refinement top
Refinement on F2 | Hydrogen site location: mixed |
Least-squares matrix: full | H 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 = 1.04 | Δρmax = 0.19 e Å−3 |
4446 reflections | Δρmin = −0.26 e Å−3 |
231 parameters | Absolute structure: Flack x determined using 1505 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons et al., 2013) |
1 restraint | Absolute 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 | x | y | z | Uiso*/Ueq | |
S1 | 1.00522 (10) | 0.52328 (8) | 0.06771 (3) | 0.04135 (15) | |
O1 | 0.7732 (3) | 0.0045 (2) | 0.11781 (9) | 0.0485 (5) | |
H1O | 0.722 (6) | 0.022 (6) | 0.154 (2) | 0.077 (12)* | |
O2 | 0.7127 (3) | 0.1748 (2) | 0.20978 (8) | 0.0475 (4) | |
O3 | 1.1918 (3) | 0.5878 (3) | 0.08652 (10) | 0.0570 (5) | |
O4 | 0.9361 (4) | 0.6481 (3) | 0.07392 (11) | 0.0619 (6) | |
N1 | 0.9764 (4) | 0.4573 (3) | −0.00925 (10) | 0.0449 (5) | |
H1N | 0.930 (6) | 0.493 (6) | −0.036 (2) | 0.084 (13)* | |
N2 | 0.7901 (4) | 0.4729 (4) | 0.19574 (11) | 0.0495 (6) | |
H2N | 0.823 (4) | 0.563 (5) | 0.1679 (17) | 0.054 (9)* | |
C1 | 0.9804 (4) | 0.2970 (4) | −0.02674 (12) | 0.0399 (5) | |
C2 | 1.0313 (4) | 0.2796 (4) | −0.09147 (12) | 0.0522 (7) | |
H2 | 1.063178 | 0.373389 | −0.122522 | 0.063* | |
C3 | 1.0338 (5) | 0.1211 (5) | −0.10885 (14) | 0.0585 (8) | |
H3 | 1.063457 | 0.106584 | −0.152342 | 0.070* | |
C4 | 0.9929 (5) | −0.0150 (4) | −0.06268 (15) | 0.0572 (7) | |
H4 | 1.000927 | −0.118202 | −0.074474 | 0.069* | |
C5 | 0.9399 (4) | 0.0003 (4) | 0.00128 (14) | 0.0476 (6) | |
H5 | 0.910375 | −0.093572 | 0.032098 | 0.057* | |
C6 | 0.9304 (3) | 0.1554 (3) | 0.01969 (11) | 0.0370 (5) | |
C7 | 0.8568 (3) | 0.1631 (3) | 0.08478 (11) | 0.0355 (5) | |
C8 | 0.8665 (3) | 0.3195 (3) | 0.11064 (11) | 0.0357 (5) | |
C9 | 0.7844 (3) | 0.3184 (3) | 0.17522 (11) | 0.0380 (5) | |
C10 | 0.7393 (4) | 0.5035 (4) | 0.26062 (12) | 0.0465 (6) | |
C11 | 0.8485 (5) | 0.5192 (4) | 0.31508 (15) | 0.0555 (7) | |
C12 | 0.7994 (7) | 0.5637 (5) | 0.37604 (16) | 0.0769 (11) | |
H12 | 0.868211 | 0.574471 | 0.413963 | 0.092* | |
C13 | 0.6526 (7) | 0.5917 (5) | 0.38125 (18) | 0.0800 (12) | |
H13 | 0.623733 | 0.622367 | 0.422398 | 0.096* | |
C14 | 0.5493 (6) | 0.5754 (5) | 0.32740 (18) | 0.0702 (9) | |
H14 | 0.449314 | 0.594212 | 0.332012 | 0.084* | |
C15 | 0.5889 (5) | 0.5313 (4) | 0.26530 (15) | 0.0558 (7) | |
C16 | 1.0125 (6) | 0.4951 (6) | 0.3090 (2) | 0.0798 (11) | |
H16C | 0.972589 | 0.366799 | 0.302999 | 0.120* | |
H16B | 1.085557 | 0.539301 | 0.348859 | 0.120* | |
H16A | 1.084992 | 0.563763 | 0.271243 | 0.120* | |
C17 | 0.4744 (6) | 0.5181 (8) | 0.2058 (2) | 0.0894 (13) | |
H17C | 0.553719 | 0.591218 | 0.169992 | 0.134* | |
H17B | 0.392562 | 0.562898 | 0.217393 | 0.134* | |
H17A | 0.403684 | 0.391825 | 0.191737 | 0.134* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
S1 | 0.0566 (4) | 0.0343 (3) | 0.0352 (2) | 0.0242 (3) | 0.0058 (2) | 0.0060 (2) |
O1 | 0.0662 (13) | 0.0356 (9) | 0.0441 (10) | 0.0258 (9) | 0.0120 (9) | 0.0088 (7) |
O2 | 0.0582 (12) | 0.0434 (10) | 0.0406 (9) | 0.0251 (9) | 0.0138 (8) | 0.0080 (8) |
O3 | 0.0507 (11) | 0.0506 (12) | 0.0513 (11) | 0.0116 (9) | −0.0003 (9) | 0.0041 (9) |
O4 | 0.1044 (18) | 0.0473 (10) | 0.0526 (11) | 0.0518 (12) | 0.0177 (11) | 0.0121 (8) |
N1 | 0.0680 (15) | 0.0482 (12) | 0.0302 (10) | 0.0378 (12) | 0.0007 (9) | 0.0068 (8) |
N2 | 0.0709 (16) | 0.0501 (13) | 0.0404 (11) | 0.0399 (12) | 0.0142 (11) | 0.0055 (9) |
C1 | 0.0478 (14) | 0.0454 (13) | 0.0321 (10) | 0.0276 (11) | −0.0014 (9) | −0.0003 (9) |
C2 | 0.0662 (19) | 0.0601 (17) | 0.0323 (11) | 0.0330 (15) | 0.0038 (11) | 0.0010 (11) |
C3 | 0.072 (2) | 0.0692 (19) | 0.0392 (14) | 0.0388 (17) | 0.0070 (13) | −0.0089 (13) |
C4 | 0.071 (2) | 0.0527 (17) | 0.0546 (16) | 0.0357 (16) | 0.0040 (14) | −0.0120 (13) |
C5 | 0.0573 (16) | 0.0422 (14) | 0.0472 (13) | 0.0278 (13) | 0.0026 (11) | −0.0022 (11) |
C6 | 0.0418 (12) | 0.0379 (12) | 0.0350 (10) | 0.0225 (10) | −0.0007 (9) | −0.0010 (9) |
C7 | 0.0403 (12) | 0.0343 (11) | 0.0348 (10) | 0.0209 (10) | 0.0018 (9) | 0.0047 (8) |
C8 | 0.0421 (12) | 0.0349 (11) | 0.0342 (10) | 0.0224 (10) | 0.0040 (9) | 0.0040 (8) |
C9 | 0.0407 (12) | 0.0419 (12) | 0.0350 (11) | 0.0234 (11) | 0.0046 (9) | 0.0038 (9) |
C10 | 0.0604 (16) | 0.0419 (13) | 0.0403 (12) | 0.0279 (13) | 0.0079 (11) | −0.0023 (10) |
C11 | 0.074 (2) | 0.0424 (15) | 0.0498 (14) | 0.0290 (15) | −0.0042 (13) | −0.0005 (12) |
C12 | 0.127 (3) | 0.057 (2) | 0.0428 (15) | 0.043 (2) | −0.0130 (19) | −0.0041 (13) |
C13 | 0.124 (3) | 0.063 (2) | 0.0522 (19) | 0.047 (2) | 0.026 (2) | −0.0041 (15) |
C14 | 0.082 (2) | 0.063 (2) | 0.069 (2) | 0.0384 (19) | 0.0248 (18) | −0.0076 (16) |
C15 | 0.0611 (18) | 0.0527 (16) | 0.0582 (16) | 0.0319 (15) | 0.0080 (14) | −0.0099 (13) |
C16 | 0.079 (3) | 0.071 (2) | 0.096 (3) | 0.042 (2) | −0.028 (2) | −0.010 (2) |
C17 | 0.093 (3) | 0.120 (4) | 0.087 (3) | 0.077 (3) | −0.017 (2) | −0.028 (3) |
Geometric parameters (Å, º) top
S1—O3 | 1.425 (2) | C5—H5 | 0.9300 |
S1—O4 | 1.431 (2) | C6—C7 | 1.457 (3) |
S1—N1 | 1.614 (2) | C7—C8 | 1.372 (3) |
S1—C8 | 1.737 (2) | C8—C9 | 1.463 (3) |
O1—C7 | 1.327 (3) | C10—C11 | 1.386 (4) |
O1—H1O | 0.89 (4) | C10—C15 | 1.394 (4) |
O2—C9 | 1.251 (3) | C11—C12 | 1.397 (5) |
N1—C1 | 1.404 (3) | C11—C16 | 1.489 (6) |
N1—H1N | 0.81 (5) | C12—C13 | 1.366 (6) |
N2—C9 | 1.334 (3) | C12—H12 | 0.9300 |
N2—C10 | 1.429 (3) | C13—C14 | 1.346 (6) |
N2—H2N | 0.86 (4) | C13—H13 | 0.9300 |
C1—C2 | 1.394 (3) | C14—C15 | 1.384 (4) |
C1—C6 | 1.396 (3) | C14—H14 | 0.9300 |
C2—C3 | 1.382 (4) | C15—C17 | 1.499 (5) |
C2—H2 | 0.9300 | C16—H16C | 0.9600 |
C3—C4 | 1.371 (5) | C16—H16B | 0.9600 |
C3—H3 | 0.9300 | C16—H16A | 0.9600 |
C4—C5 | 1.382 (4) | C17—H17C | 0.9600 |
C4—H4 | 0.9300 | C17—H17B | 0.9600 |
C5—C6 | 1.390 (3) | C17—H17A | 0.9600 |
| | | |
O3—S1—O4 | 117.87 (15) | C7—C8—S1 | 116.25 (17) |
O3—S1—N1 | 109.27 (13) | C9—C8—S1 | 121.66 (18) |
O4—S1—N1 | 106.68 (13) | O2—C9—N2 | 122.0 (2) |
O3—S1—C8 | 108.02 (12) | O2—C9—C8 | 119.5 (2) |
O4—S1—C8 | 111.01 (13) | N2—C9—C8 | 118.5 (2) |
N1—S1—C8 | 102.95 (12) | C11—C10—C15 | 122.6 (3) |
C7—O1—H1O | 107 (3) | C11—C10—N2 | 119.4 (3) |
C1—N1—S1 | 119.64 (17) | C15—C10—N2 | 117.8 (3) |
C1—N1—H1N | 116 (3) | C10—C11—C12 | 116.4 (3) |
S1—N1—H1N | 122 (3) | C10—C11—C16 | 122.1 (3) |
C9—N2—C10 | 125.7 (2) | C12—C11—C16 | 121.5 (3) |
C9—N2—H2N | 119 (2) | C13—C12—C11 | 121.5 (3) |
C10—N2—H2N | 115 (2) | C13—C12—H12 | 119.2 |
C2—C1—C6 | 120.5 (2) | C11—C12—H12 | 119.2 |
C2—C1—N1 | 119.1 (2) | C14—C13—C12 | 120.6 (3) |
C6—C1—N1 | 120.4 (2) | C14—C13—H13 | 119.7 |
C3—C2—C1 | 119.1 (3) | C12—C13—H13 | 119.7 |
C3—C2—H2 | 120.4 | C13—C14—C15 | 121.3 (4) |
C1—C2—H2 | 120.4 | C13—C14—H14 | 119.4 |
C4—C3—C2 | 120.7 (2) | C15—C14—H14 | 119.4 |
C4—C3—H3 | 119.6 | C14—C15—C10 | 117.5 (3) |
C2—C3—H3 | 119.6 | C14—C15—C17 | 120.3 (3) |
C3—C4—C5 | 120.4 (3) | C10—C15—C17 | 122.2 (3) |
C3—C4—H4 | 119.8 | C11—C16—H16C | 109.5 |
C5—C4—H4 | 119.8 | C11—C16—H16B | 109.5 |
C4—C5—C6 | 120.2 (3) | H16C—C16—H16B | 109.5 |
C4—C5—H5 | 119.9 | C11—C16—H16A | 109.5 |
C6—C5—H5 | 119.9 | H16C—C16—H16A | 109.5 |
C5—C6—C1 | 119.0 (2) | H16B—C16—H16A | 109.5 |
C5—C6—C7 | 120.1 (2) | C15—C17—H17C | 109.5 |
C1—C6—C7 | 120.8 (2) | C15—C17—H17B | 109.5 |
O1—C7—C8 | 121.1 (2) | H17C—C17—H17B | 109.5 |
O1—C7—C6 | 115.1 (2) | C15—C17—H17A | 109.5 |
C8—C7—C6 | 123.7 (2) | H17C—C17—H17A | 109.5 |
C7—C8—C9 | 121.6 (2) | H17B—C17—H17A | 109.5 |
| | | |
O3—S1—N1—C1 | 70.0 (2) | N1—S1—C8—C7 | 35.3 (2) |
O4—S1—N1—C1 | −161.5 (2) | O3—S1—C8—C9 | 92.1 (2) |
C8—S1—N1—C1 | −44.6 (2) | O4—S1—C8—C9 | −38.6 (2) |
S1—N1—C1—C2 | −153.8 (2) | N1—S1—C8—C9 | −152.4 (2) |
S1—N1—C1—C6 | 27.5 (4) | C10—N2—C9—O2 | 8.2 (4) |
C6—C1—C2—C3 | −0.7 (4) | C10—N2—C9—C8 | −171.2 (3) |
N1—C1—C2—C3 | −179.5 (3) | C7—C8—C9—O2 | 4.3 (4) |
C1—C2—C3—C4 | −2.2 (5) | S1—C8—C9—O2 | −167.6 (2) |
C2—C3—C4—C5 | 3.1 (5) | C7—C8—C9—N2 | −176.4 (2) |
C3—C4—C5—C6 | −1.1 (5) | S1—C8—C9—N2 | 11.7 (3) |
C4—C5—C6—C1 | −1.8 (4) | C9—N2—C10—C11 | 69.3 (4) |
C4—C5—C6—C7 | 173.8 (3) | C9—N2—C10—C15 | −115.8 (3) |
C2—C1—C6—C5 | 2.7 (4) | C15—C10—C11—C12 | 0.4 (4) |
N1—C1—C6—C5 | −178.5 (2) | N2—C10—C11—C12 | 175.0 (3) |
C2—C1—C6—C7 | −172.9 (2) | C15—C10—C11—C16 | −178.0 (3) |
N1—C1—C6—C7 | 5.9 (4) | N2—C10—C11—C16 | −3.4 (4) |
C5—C6—C7—O1 | −11.3 (3) | C10—C11—C12—C13 | −0.6 (5) |
C1—C6—C7—O1 | 164.2 (2) | C16—C11—C12—C13 | 177.8 (4) |
C5—C6—C7—C8 | 170.4 (3) | C11—C12—C13—C14 | 0.6 (6) |
C1—C6—C7—C8 | −14.1 (4) | C12—C13—C14—C15 | −0.5 (6) |
O1—C7—C8—C9 | −0.5 (4) | C13—C14—C15—C10 | 0.3 (5) |
C6—C7—C8—C9 | 177.7 (2) | C13—C14—C15—C17 | −178.6 (4) |
O1—C7—C8—S1 | 171.8 (2) | C11—C10—C15—C14 | −0.3 (5) |
C6—C7—C8—S1 | −10.0 (3) | N2—C10—C15—C14 | −175.0 (3) |
O3—S1—C8—C7 | −80.2 (2) | C11—C10—C15—C17 | 178.6 (4) |
O4—S1—C8—C7 | 149.1 (2) | N2—C10—C15—C17 | 3.9 (5) |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1O···O2 | 0.89 (4) | 1.73 (5) | 2.530 (3) | 148 (4) |
N2—H2N···O4 | 0.86 (4) | 2.07 (4) | 2.793 (3) | 141 (3) |
N1—H1N···O2i | 0.81 (5) | 2.07 (5) | 2.855 (3) | 164 (4) |
Symmetry code: (i) −y+1, x−y, z−1/3. |
N-(2,6-Dimethylphenyl)-4-hydroxy-2,2-dioxo-1
H-2
λ6,1-\
benzothiazine-3-carboxamide (1B)
top
Crystal data top
C17H16N2O4S | Dx = 1.411 Mg m−3 |
Mr = 344.38 | Mo Kα radiation, λ = 0.71073 Å |
Trigonal, P31 | Cell parameters from 2136 reflections |
a = 8.3735 (3) Å | θ = 4.1–29.8° |
c = 20.0299 (8) Å | µ = 0.22 mm−1 |
V = 1216.25 (10) Å3 | T = 293 K |
Z = 3 | Block, colorless |
F(000) = 540 | 0.20 × 0.10 × 0.10 mm |
Data collection top
Xcalibur, Sapphire3 diffractometer | 4687 independent reflections |
Radiation source: Enhance (Mo) X-ray Source | 3771 reflections with I > 2σ(I) |
Detector resolution: 16.1827 pixels mm-1 | Rint = 0.054 |
ω scans | θmax = 30.0°, θmin = 3.0° |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2013) | h = −11→11 |
Tmin = 0.646, Tmax = 1.000 | k = −11→11 |
12184 measured reflections | l = −28→27 |
Refinement top
Refinement on F2 | H 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) = 0.102 | Δρmax = 0.27 e Å−3 |
S = 1.00 | Δρmin = −0.21 e Å−3 |
4687 reflections | Extinction correction: SHELXL2016 (Sheldrick, 2015b), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
232 parameters | Extinction coefficient: 0.011 (3) |
1 restraint | Absolute structure: Flack x determined using 1397 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons et al., 2013) |
Hydrogen site location: mixed | Absolute 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 | x | y | z | Uiso*/Ueq | |
S1 | 0.32812 (12) | 0.14350 (10) | 0.44036 (3) | 0.0416 (2) | |
O1 | 0.5600 (3) | 0.6621 (3) | 0.39035 (12) | 0.0489 (6) | |
H1O | 0.611 (6) | 0.648 (6) | 0.353 (2) | 0.065 (12)* | |
O2 | 0.6209 (3) | 0.4920 (3) | 0.29834 (10) | 0.0476 (6) | |
O3 | 0.3975 (4) | 0.0190 (3) | 0.43428 (13) | 0.0617 (7) | |
O4 | 0.1418 (3) | 0.0781 (3) | 0.42140 (11) | 0.0569 (6) | |
N1 | 0.3562 (4) | 0.2091 (4) | 0.51740 (12) | 0.0453 (6) | |
H1N | 0.411 (6) | 0.180 (6) | 0.543 (2) | 0.069 (13)* | |
N2 | 0.5431 (4) | 0.1938 (4) | 0.31231 (14) | 0.0499 (7) | |
H2N | 0.513 (5) | 0.107 (6) | 0.339 (2) | 0.061 (12)* | |
C1 | 0.3526 (4) | 0.3697 (4) | 0.53486 (14) | 0.0397 (7) | |
C2 | 0.3021 (5) | 0.3878 (5) | 0.59942 (15) | 0.0531 (9) | |
H2 | 0.270219 | 0.293987 | 0.630462 | 0.064* | |
C3 | 0.2996 (6) | 0.5459 (6) | 0.61700 (16) | 0.0585 (10) | |
H3 | 0.270322 | 0.560566 | 0.660507 | 0.070* | |
C4 | 0.3402 (5) | 0.6812 (5) | 0.57072 (18) | 0.0573 (9) | |
H4 | 0.331902 | 0.784352 | 0.582398 | 0.069* | |
C5 | 0.3932 (5) | 0.6660 (4) | 0.50695 (17) | 0.0478 (7) | |
H5 | 0.422781 | 0.760027 | 0.476209 | 0.057* | |
C6 | 0.4026 (4) | 0.5110 (4) | 0.48837 (13) | 0.0369 (6) | |
C7 | 0.4762 (4) | 0.5034 (4) | 0.42343 (14) | 0.0360 (6) | |
C8 | 0.4672 (4) | 0.3474 (4) | 0.39742 (14) | 0.0360 (6) | |
C9 | 0.5490 (4) | 0.3483 (4) | 0.33303 (13) | 0.0372 (6) | |
C10 | 0.5940 (5) | 0.1636 (4) | 0.24751 (15) | 0.0464 (7) | |
C11 | 0.4850 (6) | 0.1478 (5) | 0.19313 (18) | 0.0576 (9) | |
C12 | 0.5340 (8) | 0.1029 (6) | 0.1320 (2) | 0.0773 (13) | |
H12 | 0.464938 | 0.091789 | 0.094165 | 0.093* | |
C13 | 0.6808 (8) | 0.0753 (6) | 0.1268 (2) | 0.0800 (14) | |
H13 | 0.709859 | 0.044930 | 0.085694 | 0.096* | |
C14 | 0.7843 (6) | 0.0915 (6) | 0.1809 (2) | 0.0697 (11) | |
H14 | 0.884443 | 0.073037 | 0.176330 | 0.084* | |
C15 | 0.7440 (5) | 0.1350 (5) | 0.24254 (18) | 0.0554 (9) | |
C16 | 0.3195 (6) | 0.1712 (6) | 0.1990 (3) | 0.0793 (13) | |
H16A | 0.243247 | 0.120691 | 0.160201 | 0.119* | |
H16B | 0.358730 | 0.299962 | 0.202585 | 0.119* | |
H16C | 0.250428 | 0.107872 | 0.238123 | 0.119* | |
C17 | 0.8586 (7) | 0.1481 (8) | 0.3022 (3) | 0.0888 (15) | |
H17A | 0.942780 | 0.106442 | 0.290292 | 0.133* | |
H17B | 0.779481 | 0.072420 | 0.337556 | 0.133* | |
H17C | 0.926866 | 0.273935 | 0.316989 | 0.133* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
S1 | 0.0570 (5) | 0.0346 (4) | 0.0354 (3) | 0.0247 (4) | 0.0055 (3) | 0.0055 (3) |
O1 | 0.0650 (15) | 0.0365 (12) | 0.0453 (12) | 0.0255 (11) | 0.0128 (12) | 0.0087 (10) |
O2 | 0.0576 (14) | 0.0457 (13) | 0.0411 (11) | 0.0270 (11) | 0.0133 (10) | 0.0085 (10) |
O3 | 0.102 (2) | 0.0482 (13) | 0.0524 (13) | 0.0509 (14) | 0.0151 (13) | 0.0107 (11) |
O4 | 0.0524 (14) | 0.0502 (14) | 0.0506 (13) | 0.0125 (11) | −0.0008 (11) | 0.0046 (11) |
N1 | 0.0666 (19) | 0.0485 (15) | 0.0327 (12) | 0.0377 (15) | −0.0004 (12) | 0.0065 (11) |
N2 | 0.0696 (19) | 0.0509 (17) | 0.0417 (14) | 0.0394 (15) | 0.0141 (14) | 0.0057 (13) |
C1 | 0.0461 (17) | 0.0440 (17) | 0.0329 (12) | 0.0254 (14) | −0.0019 (13) | −0.0017 (12) |
C2 | 0.067 (2) | 0.060 (2) | 0.0342 (14) | 0.0332 (19) | 0.0037 (15) | 0.0017 (15) |
C3 | 0.072 (3) | 0.067 (2) | 0.0393 (17) | 0.036 (2) | 0.0069 (16) | −0.0093 (17) |
C4 | 0.067 (2) | 0.055 (2) | 0.056 (2) | 0.0348 (19) | 0.0049 (18) | −0.0106 (17) |
C5 | 0.058 (2) | 0.0424 (17) | 0.0477 (16) | 0.0289 (16) | 0.0048 (15) | −0.0006 (14) |
C6 | 0.0396 (14) | 0.0366 (14) | 0.0360 (13) | 0.0201 (12) | −0.0001 (12) | −0.0010 (12) |
C7 | 0.0403 (15) | 0.0327 (14) | 0.0366 (13) | 0.0194 (12) | 0.0002 (12) | 0.0048 (11) |
C8 | 0.0438 (15) | 0.0351 (14) | 0.0340 (12) | 0.0233 (12) | 0.0035 (12) | 0.0043 (11) |
C9 | 0.0414 (15) | 0.0403 (15) | 0.0341 (14) | 0.0236 (13) | 0.0022 (12) | 0.0037 (12) |
C10 | 0.059 (2) | 0.0413 (16) | 0.0418 (15) | 0.0270 (16) | 0.0096 (15) | −0.0016 (13) |
C11 | 0.077 (3) | 0.0451 (19) | 0.0514 (18) | 0.0314 (19) | −0.0052 (18) | −0.0005 (16) |
C12 | 0.127 (4) | 0.057 (2) | 0.0437 (19) | 0.043 (3) | −0.012 (2) | −0.0032 (17) |
C13 | 0.126 (4) | 0.062 (3) | 0.053 (2) | 0.048 (3) | 0.026 (3) | −0.0038 (19) |
C14 | 0.077 (3) | 0.064 (2) | 0.070 (3) | 0.037 (2) | 0.022 (2) | −0.008 (2) |
C15 | 0.059 (2) | 0.0499 (19) | 0.058 (2) | 0.0285 (17) | 0.0068 (17) | −0.0110 (16) |
C16 | 0.077 (3) | 0.071 (3) | 0.097 (3) | 0.043 (2) | −0.027 (3) | −0.010 (3) |
C17 | 0.092 (3) | 0.121 (4) | 0.085 (3) | 0.077 (3) | −0.017 (3) | −0.028 (3) |
Geometric parameters (Å, º) top
S1—O4 | 1.423 (3) | C5—H5 | 0.9300 |
S1—O3 | 1.430 (3) | C6—C7 | 1.454 (4) |
S1—N1 | 1.615 (3) | C7—C8 | 1.373 (4) |
S1—C8 | 1.739 (3) | C8—C9 | 1.459 (4) |
O1—C7 | 1.329 (3) | C10—C11 | 1.384 (5) |
O1—H1O | 0.89 (4) | C10—C15 | 1.395 (5) |
O2—C9 | 1.253 (3) | C11—C12 | 1.400 (6) |
N1—C1 | 1.405 (4) | C11—C16 | 1.499 (6) |
N1—H1N | 0.80 (5) | C12—C13 | 1.364 (7) |
N2—C9 | 1.335 (4) | C12—H12 | 0.9300 |
N2—C10 | 1.428 (4) | C13—C14 | 1.350 (7) |
N2—H2N | 0.84 (4) | C13—H13 | 0.9300 |
C1—C2 | 1.392 (4) | C14—C15 | 1.377 (5) |
C1—C6 | 1.395 (4) | C14—H14 | 0.9300 |
C2—C3 | 1.380 (5) | C15—C17 | 1.502 (6) |
C2—H2 | 0.9300 | C16—H16A | 0.9600 |
C3—C4 | 1.369 (5) | C16—H16B | 0.9600 |
C3—H3 | 0.9300 | C16—H16C | 0.9600 |
C4—C5 | 1.379 (5) | C17—H17A | 0.9600 |
C4—H4 | 0.9300 | C17—H17B | 0.9600 |
C5—C6 | 1.390 (4) | C17—H17C | 0.9600 |
| | | |
O4—S1—O3 | 117.65 (17) | C7—C8—S1 | 116.0 (2) |
O4—S1—N1 | 109.32 (16) | C9—C8—S1 | 121.6 (2) |
O3—S1—N1 | 106.64 (15) | O2—C9—N2 | 121.7 (3) |
O4—S1—C8 | 108.24 (14) | O2—C9—C8 | 119.6 (3) |
O3—S1—C8 | 110.91 (15) | N2—C9—C8 | 118.7 (3) |
N1—S1—C8 | 103.09 (15) | C11—C10—C15 | 122.3 (3) |
C7—O1—H1O | 109 (3) | C11—C10—N2 | 119.4 (3) |
C1—N1—S1 | 119.6 (2) | C15—C10—N2 | 118.0 (3) |
C1—N1—H1N | 115 (3) | C10—C11—C12 | 116.5 (4) |
S1—N1—H1N | 121 (3) | C10—C11—C16 | 122.3 (3) |
C9—N2—C10 | 125.8 (3) | C12—C11—C16 | 121.2 (4) |
C9—N2—H2N | 119 (3) | C13—C12—C11 | 121.5 (4) |
C10—N2—H2N | 115 (3) | C13—C12—H12 | 119.3 |
C2—C1—C6 | 120.5 (3) | C11—C12—H12 | 119.3 |
C2—C1—N1 | 119.2 (3) | C14—C13—C12 | 120.6 (4) |
C6—C1—N1 | 120.3 (3) | C14—C13—H13 | 119.7 |
C3—C2—C1 | 119.5 (3) | C12—C13—H13 | 119.7 |
C3—C2—H2 | 120.3 | C13—C14—C15 | 121.1 (4) |
C1—C2—H2 | 120.3 | C13—C14—H14 | 119.5 |
C4—C3—C2 | 120.3 (3) | C15—C14—H14 | 119.5 |
C4—C3—H3 | 119.8 | C14—C15—C10 | 118.0 (4) |
C2—C3—H3 | 119.8 | C14—C15—C17 | 120.1 (4) |
C3—C4—C5 | 120.6 (3) | C10—C15—C17 | 121.9 (3) |
C3—C4—H4 | 119.7 | C11—C16—H16A | 109.5 |
C5—C4—H4 | 119.7 | C11—C16—H16B | 109.5 |
C4—C5—C6 | 120.4 (3) | H16A—C16—H16B | 109.5 |
C4—C5—H5 | 119.8 | C11—C16—H16C | 109.5 |
C6—C5—H5 | 119.8 | H16A—C16—H16C | 109.5 |
C5—C6—C1 | 118.7 (3) | H16B—C16—H16C | 109.5 |
C5—C6—C7 | 120.2 (3) | C15—C17—H17A | 109.5 |
C1—C6—C7 | 120.9 (3) | C15—C17—H17B | 109.5 |
O1—C7—C8 | 120.9 (3) | H17A—C17—H17B | 109.5 |
O1—C7—C6 | 115.2 (2) | C15—C17—H17C | 109.5 |
C8—C7—C6 | 123.9 (3) | H17A—C17—H17C | 109.5 |
C7—C8—C9 | 121.9 (3) | H17B—C17—H17C | 109.5 |
| | | |
O4—S1—N1—C1 | −70.5 (3) | N1—S1—C8—C7 | −35.3 (3) |
O3—S1—N1—C1 | 161.3 (3) | O4—S1—C8—C9 | −91.7 (3) |
C8—S1—N1—C1 | 44.4 (3) | O3—S1—C8—C9 | 38.8 (3) |
S1—N1—C1—C2 | 154.1 (3) | N1—S1—C8—C9 | 152.6 (2) |
S1—N1—C1—C6 | −27.1 (4) | C10—N2—C9—O2 | −8.0 (5) |
C6—C1—C2—C3 | 0.8 (5) | C10—N2—C9—C8 | 171.2 (3) |
N1—C1—C2—C3 | 179.5 (3) | C7—C8—C9—O2 | −4.1 (4) |
C1—C2—C3—C4 | 2.3 (6) | S1—C8—C9—O2 | 167.6 (2) |
C2—C3—C4—C5 | −3.4 (6) | C7—C8—C9—N2 | 176.7 (3) |
C3—C4—C5—C6 | 1.3 (6) | S1—C8—C9—N2 | −11.7 (4) |
C4—C5—C6—C1 | 1.7 (5) | C9—N2—C10—C11 | −69.6 (5) |
C4—C5—C6—C7 | −173.7 (3) | C9—N2—C10—C15 | 115.9 (4) |
C2—C1—C6—C5 | −2.8 (5) | C15—C10—C11—C12 | −0.6 (5) |
N1—C1—C6—C5 | 178.5 (3) | N2—C10—C11—C12 | −174.8 (3) |
C2—C1—C6—C7 | 172.7 (3) | C15—C10—C11—C16 | 177.5 (4) |
N1—C1—C6—C7 | −6.0 (5) | N2—C10—C11—C16 | 3.3 (5) |
C5—C6—C7—O1 | 11.2 (4) | C10—C11—C12—C13 | 0.4 (6) |
C1—C6—C7—O1 | −164.2 (3) | C16—C11—C12—C13 | −177.7 (4) |
C5—C6—C7—C8 | −170.6 (3) | C11—C12—C13—C14 | −0.4 (7) |
C1—C6—C7—C8 | 14.0 (4) | C12—C13—C14—C15 | 0.5 (7) |
O1—C7—C8—C9 | 0.3 (4) | C13—C14—C15—C10 | −0.6 (6) |
C6—C7—C8—C9 | −177.8 (3) | C13—C14—C15—C17 | 178.6 (4) |
O1—C7—C8—S1 | −171.8 (2) | C11—C10—C15—C14 | 0.7 (5) |
C6—C7—C8—S1 | 10.1 (4) | N2—C10—C15—C14 | 175.0 (3) |
O4—S1—C8—C7 | 80.4 (3) | C11—C10—C15—C17 | −178.5 (4) |
O3—S1—C8—C7 | −149.1 (2) | N2—C10—C15—C17 | −4.2 (5) |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2N···O3 | 0.84 (4) | 2.09 (4) | 2.795 (4) | 141 (4) |
O1—H1O···O2 | 0.89 (4) | 1.74 (4) | 2.532 (3) | 146 (4) |
N1—H1N···O2i | 0.80 (5) | 2.09 (5) | 2.857 (3) | 161 (4) |
Symmetry code: (i) −y+1, x−y, z+1/3. |
Selected geometric parameters for molecules 1A and 1B topParameter | Molecule 1A | Molecule 1B |
Ring-puckering parameters (Zefirov et al., 1990) | | |
S | 0.56 | 0.56 |
Θ (°) | 52.7 | 52.8 |
Ψ (°) | 16.9 | 16.4 |
Atom deviation from the mean plane of the remaining atoms of the ring (Å) | | |
S1 | 0.746 (1) | -0.761 (1) |
C8 | 0.178 (4) | -0.195 (3) |
Bond lengths (Å) | | |
C9—O2 | 1.251 (3) | 1.253 (3) |
O1—C7 | 1.327 (3) | 1.329 (4) |
C7—C8 | 1.372 (3) | 1.373 (4) |
C8—C9 | 1.463 (3) | 1.459 (4) |
N1—C1 | 1.404 (3) | 1.405 (4) |
Torsion angles (°) | | |
C1—N1—S1—C8 | -44.6 (2) | 44.4 (3) |
N1—S1—C8—C7 | 35.3 (2) | -35.3 (3) |
C10—N2—C9—C8 | -171.2 (3) | 171.2 (3) |
C9—N2—C10—C11 | 69.3 (4) | -69.6 (5) |
C7—C8—C9—O2 | 4.3 (4) | -4.1 (5) |
Geometric characteristics of the intramolecular and intermolecular hydrogen
bonds (Å, °) in 1A and 1B topInteraction | D—H | H···A | D···A | D—H···A |
Structure 1A | | | | |
O1—H1O···O2 | 0.89 (4) | 1.73 (5) | 2.530 (3) | 148 (4) |
N2—H2N···O4 | 0.86 (4) | 2.07 (4) | 2.793 (3) | 141 (3) |
N1—H1N···O2i | 0.81 (5) | 2.07 (5) | 2.855 (3) | 164 (4) |
C5—H5···O4ii | 0.93 | 2.43 | 3.274 (5) | 151 |
C6···C14 (π–π)iii | Distance between atoms = 3.751 (4) Å | | | |
| | | | |
Structure 1B | | | | |
O1—H1O···O2 | 0.89 (4) | 1.74 (4) | 2.532 (3) | 146 (4) |
N2—H2N···O3 | 0.84 (4) | 2.09 (4) | 2.795 (4) | 141 (4) |
N1—H1N···O2iv | 0.80 (5) | 2.09 (5) | 2.857 (3) | 161 (4) |
C5—H5···O3v | 0.93 | 2.43 | 3.279 (5) | 151 |
C6···C14 (π–π)vi | Distance 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) topStructure | T (K) | T (°C) | ΔH (kJ kg-1) | ΔH (kcal mol-1) |
1A | 514,63 ± 0,25 | 241,48 ± 0,25 | 109,8 ± 0,8 | 9,03 ± 0,07 |
1B | 515,73 ± 0,23 | 242,68 ± 0,23 | 109,7 ± 0,9 | 9,02 ± 0,07 |
The analgesic activity of 1A, 1B and meloxicam topProduct | Pain threshold on damaged extremity (g mm-2) | Pain threshold on non-damaged extremity (g mm-2) | Δ Pain threshold | Analgesic activity compared to control (%) |
1A | 428.0 ± 26.5 | 347.5 ± 20.7 | 80.5 ± 8.61,2 | 64.7 |
1B | 431.0 ± 17.2 | 263.0 ± 14.6 | 168.0 ± 9.301,2 | 26.3 |
Meloxicam | 362.0 ± 34.9 | 294.0 ± 28.8 | 68.0 ± 7.91 | 70.2 |
Control | 422.0 ± 14.9 | 194.0 ± 16.3 | 228.0 ± 9.70 | 0 |
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 topProduct | Volume of damaged extremity (mm3) | Volume of nondamaged extremity (mm3) | Δ Volume (volume increase) | Anti-inflammatory activity compared to control (%) |
1A | 610.4 ± 53.3 | 386.8 ± 51.9 | 233.6 ± 27.51,2 | 22.1 |
1B | 519.2 ± 33.0 | 405.7 ± 30.0 | 113.5 ± 23.71,2 | 62.2 |
Meloxicam | 577.4 ± 55.9 | 435.0 ± 44.5 | 142.4 ± 33.21 | 52.5 |
Control | 633.2 ± 44.3 | 333.3 ± 27.9 | 299.9 ± 28.2 | 0 |
Notes: (1) differences statistically significant for p ≤ 0.05
versus control; (2) differences statistically significant
for p ≤ 0.05 versus meloxicam. |