
Acta Cryst. (2008). E64, o701 [ doi:10.1107/S160053680800487X ]
The crystal structure of the title compound, C25H18ClN5O, was determined in the course of our studies on the synthesis of 1,4-dihydropyrano[2,3-c]pyrazole as an inhibitor of the p38 mitogen-activated protein kinase (MAPK). The compound was prepared via a base-catalysed synthesis from 1-benzyl-3-(4-pyridyl)-1H-pyrazol-5(4H)-one with p-chloroaldehyde and malononitrile. The crystal data obtained were used to generate a three-dimensional pharmacophore model for in silico database screening. The phenyl ring is disordered over two positions, with site occupancy factors of 0.55 and 0.45. The dihedral angles between the 1,4-dihydropyrano[2,3-c]pyrazole unit and the chlorophenyl and pyridine rings are 83.7 (1) and 16.0 (1)°, respectively. The chlorophenyl and pyridine rings make a dihedral angle of 86.8 (2)°.
1-Benzyl-3-(4-pyridyl)-1H-pyrazol-5(4H)-one (1): A solution of ethyl 3-oxo-3-(4-pyridyl)propanoate (7.76 mmol) and triethylamine (7.76 mmol) in ethanol (15 ml) was cooled with an ice-bath. 2-Benzylhydrazinium chloride (7.76 mmol) was added and the reaction mixture was heated up to 60 °C for three hours. The solvent was evaporated to yield 98% of 1.
6-Amino-1-benzyl-4-(4-chlorophenyl)-3-(4-pyridyl)-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (2): A mixture of p-chlorobenzaldehyde (0.80 mmol), malononitrile (0.80 mmol), N-methylmorpholine (0.80 mmol) in ethanol (10 ml) was stirred for one minute at room temperature. 1 was added and left to stand for one day. The precipitate formed was filtered and washed with ethanol and hexane. The compound was recrystallized from ethanol (31% yield).
Hydrogen atoms attached to carbons were placed at calculated positions with C—H=0.95A% (aromatic) or 0.99–1.00 Å (sp3 C-atom). Hydrogen atom attached to N17 were located in diff. fourier maps. All H atoms were refined with fixed isotropic thermal parameters using a riding motion model with Uiso(H) = 1.2–1.5Ueq (parent atom). The phenyl ring C11 - C16 is disordered over two positions with s.o.f. of 0.55/0.45 and was refined as a rigid group.
Data collection: CAD-4 Software (Enraf–Nonius, 1989); cell refinement: CAD-4 Software (Enraf–Nonius, 1989); data reduction: CORINC (Dräger & Gattow, 1971); program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2003); software used to prepare material for publication: PLATON (Spek, 2003).
| C25H18ClN5O | F000 = 912 |
| Mr = 439.89 | Dx = 1.368 Mg m−3 |
| Monoclinic, P21/c | Cu Kα radiation λ = 1.54178 Å |
| Hall symbol: -P 2ybc | Cell parameters from 25 reflections |
| a = 5.7021 (11) Å | θ = 30–42º |
| b = 17.795 (3) Å | µ = 1.81 mm−1 |
| c = 21.056 (9) Å | T = 193 (2) K |
| β = 90.954 (8)º | Needle, colourless |
| V = 2136.2 (11) Å3 | 0.46 × 0.12 × 0.08 mm |
| Z = 4 |
| Enraf–Nonius CAD-4 diffractometer | Rint = 0.026 |
| Monochromator: graphite | θmax = 69.9º |
| T = 193(2) K | θmin = 3.3º |
| ω/2θ scans | h = 0→6 |
| Absorption correction: ψ scan (CORINC; Dräger & Gattow, 1971) | k = 0→21 |
| Tmin = 0.825, Tmax = 0.998 | l = −25→25 |
| 4443 measured reflections | 3 standard reflections |
| 4018 independent reflections | every 60 min |
| 2971 reflections with I > 2σ(I) | intensity decay: 2% |
| Refinement on F2 | Secondary atom site location: difference Fourier map |
| Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
| R[F2 > 2σ(F2)] = 0.067 | H-atom parameters constrained |
| wR(F2) = 0.203 | w = 1/[σ2(Fo2) + (0.0991P)2 + 1.7529P] where P = (Fo2 + 2Fc2)/3 |
| S = 1.07 | (Δ/σ)max = 0.002 |
| 4018 reflections | Δρmax = 0.50 e Å−3 |
| 307 parameters | Δρmin = −0.64 e Å−3 |
| 66 restraints | Extinction correction: none |
| Primary atom site location: structure-invariant direct methods |
| C25H18ClN5O | V = 2136.2 (11) Å3 |
| Mr = 439.89 | Z = 4 |
| Monoclinic, P21/c | Cu Kα |
| a = 5.7021 (11) Å | µ = 1.81 mm−1 |
| b = 17.795 (3) Å | T = 193 (2) K |
| c = 21.056 (9) Å | 0.46 × 0.12 × 0.08 mm |
| β = 90.954 (8)º |
| Enraf–Nonius CAD-4 diffractometer | 2971 reflections with I > 2σ(I) |
| Absorption correction: ψ scan (CORINC; Dräger & Gattow, 1971) | Rint = 0.026 |
| Tmin = 0.825, Tmax = 0.998 | 3 standard reflections |
| 4443 measured reflections | every 60 min |
| 4018 independent reflections | intensity decay: 2% |
| R[F2 > 2σ(F2)] = 0.067 | 66 restraints |
| wR(F2) = 0.203 | H-atom parameters constrained |
| S = 1.07 | Δρmax = 0.50 e Å−3 |
| 4018 reflections | Δρmin = −0.64 e Å−3 |
| 307 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 | Occ. (<1) | |
| N1 | 0.9067 (5) | 0.26498 (14) | 0.08891 (12) | 0.0361 (6) | |
| C2 | 0.7214 (5) | 0.31100 (16) | 0.08484 (13) | 0.0336 (6) | |
| O3 | 0.6666 (4) | 0.34475 (12) | 0.02838 (9) | 0.0367 (5) | |
| C4 | 0.4711 (5) | 0.38996 (16) | 0.03011 (13) | 0.0328 (6) | |
| C5 | 0.3506 (5) | 0.40201 (16) | 0.08494 (13) | 0.0332 (6) | |
| C6 | 0.4017 (5) | 0.36554 (17) | 0.14986 (13) | 0.0327 (6) | |
| H6 | 0.2635 | 0.3341 | 0.1615 | 0.039* | |
| C7 | 0.6089 (5) | 0.31463 (16) | 0.14147 (13) | 0.0330 (6) | |
| C8 | 0.7427 (5) | 0.26449 (17) | 0.18021 (14) | 0.0340 (7) | |
| N9 | 0.9221 (5) | 0.23499 (15) | 0.14809 (12) | 0.0372 (6) | |
| C10 | 1.0661 (6) | 0.2425 (2) | 0.03898 (16) | 0.0438 (8) | |
| H10A | 1.2188 | 0.2281 | 0.0585 | 0.053* | 0.55 |
| H10B | 1.0933 | 0.2859 | 0.0106 | 0.053* | 0.55 |
| H10C | 1.1120 | 0.2880 | 0.0152 | 0.053* | 0.45 |
| H10D | 1.2100 | 0.2217 | 0.0593 | 0.053* | 0.45 |
| C11A | 0.9722 (14) | 0.1768 (3) | −0.0004 (3) | 0.060 (5) | 0.55 |
| C12A | 0.9179 (14) | 0.1866 (3) | −0.0645 (3) | 0.079 (2) | 0.55 |
| H12A | 0.9415 | 0.2341 | −0.0840 | 0.095* | 0.55 |
| C13A | 0.8290 (16) | 0.1269 (4) | −0.1000 (3) | 0.106 (4) | 0.55 |
| H13A | 0.7919 | 0.1336 | −0.1438 | 0.127* | 0.55 |
| C14A | 0.7945 (17) | 0.0574 (4) | −0.0714 (4) | 0.126 (5) | 0.55 |
| H14A | 0.7338 | 0.0166 | −0.0957 | 0.151* | 0.55 |
| C15A | 0.8488 (17) | 0.0477 (3) | −0.0074 (4) | 0.134 (5) | 0.55 |
| H15A | 0.8252 | 0.0002 | 0.0122 | 0.161* | 0.55 |
| C16A | 0.9377 (16) | 0.1074 (4) | 0.0282 (2) | 0.100 (3) | 0.55 |
| H16A | 0.9748 | 0.1007 | 0.0719 | 0.120* | 0.55 |
| C11B | 0.9766 (14) | 0.1880 (5) | −0.0057 (4) | 0.047 (4) | 0.45 |
| C12B | 0.7484 (13) | 0.1612 (6) | −0.0118 (4) | 0.091 (4) | 0.45 |
| H12B | 0.6351 | 0.1743 | 0.0189 | 0.110* | 0.45 |
| C13B | 0.6861 (16) | 0.1152 (6) | −0.0627 (5) | 0.115 (5) | 0.45 |
| H13B | 0.5302 | 0.0969 | −0.0668 | 0.138* | 0.45 |
| C14B | 0.852 (2) | 0.0960 (7) | −0.1075 (5) | 0.140 (7) | 0.45 |
| H14B | 0.8094 | 0.0646 | −0.1423 | 0.169* | 0.45 |
| C15B | 1.080 (2) | 0.1229 (8) | −0.1014 (6) | 0.249 (14) | 0.45 |
| H15B | 1.1936 | 0.1098 | −0.1321 | 0.299* | 0.45 |
| C16B | 1.1425 (14) | 0.1689 (7) | −0.0505 (6) | 0.122 (5) | 0.45 |
| H16B | 1.2985 | 0.1872 | −0.0464 | 0.146* | 0.45 |
| N17 | 0.4223 (3) | 0.41620 (8) | −0.02841 (6) | 0.0399 (6) | |
| H17A | 0.5116 | 0.3977 | −0.0603 | 0.060* | |
| H17B | 0.2870 | 0.4458 | −0.0355 | 0.060* | |
| C18 | 0.1547 (3) | 0.45076 (8) | 0.08023 (6) | 0.0361 (7) | |
| N19 | −0.0041 (3) | 0.49044 (8) | 0.07707 (6) | 0.0465 (7) | |
| C20 | 0.4394 (3) | 0.42549 (8) | 0.20151 (6) | 0.0333 (6) | |
| C21 | 0.2730 (3) | 0.43846 (8) | 0.24634 (6) | 0.0660 (12) | |
| H21 | 0.1334 | 0.4093 | 0.2462 | 0.079* | |
| C22 | 0.3071 (9) | 0.4943 (3) | 0.2924 (2) | 0.0825 (16) | |
| H22 | 0.1897 | 0.5039 | 0.3229 | 0.099* | |
| C23 | 0.5087 (8) | 0.5345 (2) | 0.29324 (17) | 0.0548 (10) | |
| C24 | 0.6723 (8) | 0.5225 (2) | 0.2495 (2) | 0.0604 (10) | |
| H24 | 0.8128 | 0.5512 | 0.2504 | 0.072* | |
| C25 | 0.6371 (7) | 0.4684 (2) | 0.20311 (18) | 0.0543 (9) | |
| H25 | 0.7530 | 0.4610 | 0.1718 | 0.065* | |
| Cl26 | 0.5572 (3) | 0.60204 (7) | 0.35216 (6) | 0.0929 (5) | |
| C27 | 0.7013 (6) | 0.23447 (17) | 0.24463 (14) | 0.0368 (7) | |
| C28 | 0.8630 (7) | 0.1865 (2) | 0.27282 (18) | 0.0548 (9) | |
| H28 | 1.0078 | 0.1767 | 0.2527 | 0.066* | |
| C29 | 0.8138 (7) | 0.1527 (2) | 0.33022 (18) | 0.0588 (10) | |
| H29 | 0.9275 | 0.1196 | 0.3482 | 0.071* | |
| N30 | 0.6181 (6) | 0.16380 (18) | 0.36153 (13) | 0.0514 (8) | |
| C31 | 0.4668 (7) | 0.2105 (3) | 0.33473 (18) | 0.0625 (11) | |
| H31 | 0.3261 | 0.2205 | 0.3567 | 0.075* | |
| C32 | 0.4972 (7) | 0.2462 (2) | 0.27684 (18) | 0.0581 (10) | |
| H32 | 0.3786 | 0.2781 | 0.2598 | 0.070* |
| U11 | U22 | U33 | U12 | U13 | U23 | |
| N1 | 0.0401 (14) | 0.0352 (13) | 0.0331 (13) | −0.0005 (11) | 0.0039 (10) | −0.0038 (10) |
| C2 | 0.0419 (17) | 0.0304 (14) | 0.0286 (14) | −0.0032 (12) | 0.0020 (12) | −0.0020 (11) |
| O3 | 0.0438 (12) | 0.0397 (11) | 0.0268 (10) | 0.0027 (9) | 0.0048 (8) | −0.0002 (8) |
| C4 | 0.0413 (16) | 0.0289 (14) | 0.0282 (14) | −0.0028 (12) | 0.0011 (12) | −0.0017 (11) |
| C5 | 0.0387 (16) | 0.0333 (15) | 0.0277 (14) | −0.0012 (12) | 0.0030 (12) | −0.0006 (11) |
| C6 | 0.0382 (16) | 0.0336 (15) | 0.0265 (14) | −0.0035 (12) | 0.0037 (11) | 0.0002 (11) |
| C7 | 0.0377 (16) | 0.0317 (14) | 0.0297 (14) | −0.0038 (12) | 0.0032 (12) | −0.0022 (11) |
| C8 | 0.0381 (16) | 0.0321 (15) | 0.0319 (15) | −0.0040 (12) | 0.0010 (12) | −0.0003 (12) |
| N9 | 0.0420 (14) | 0.0356 (13) | 0.0341 (13) | −0.0002 (11) | 0.0008 (11) | −0.0014 (10) |
| C10 | 0.0424 (18) | 0.0462 (19) | 0.0433 (18) | −0.0002 (15) | 0.0096 (14) | −0.0066 (15) |
| C11A | 0.096 (11) | 0.045 (5) | 0.040 (6) | −0.010 (5) | 0.008 (5) | −0.024 (4) |
| C12A | 0.119 (6) | 0.067 (5) | 0.052 (4) | 0.008 (5) | −0.023 (4) | 0.002 (4) |
| C13A | 0.142 (8) | 0.101 (7) | 0.074 (6) | 0.009 (6) | −0.036 (6) | −0.025 (6) |
| C14A | 0.167 (9) | 0.110 (8) | 0.100 (7) | −0.041 (7) | −0.009 (7) | −0.030 (6) |
| C15A | 0.187 (9) | 0.098 (7) | 0.116 (8) | −0.044 (7) | −0.008 (7) | −0.020 (6) |
| C16A | 0.149 (8) | 0.074 (5) | 0.077 (5) | −0.039 (6) | −0.010 (5) | −0.005 (4) |
| C11B | 0.042 (7) | 0.048 (5) | 0.050 (7) | 0.003 (5) | 0.003 (5) | 0.003 (5) |
| C12B | 0.077 (6) | 0.090 (7) | 0.107 (7) | −0.008 (5) | −0.003 (6) | −0.054 (6) |
| C13B | 0.104 (8) | 0.113 (8) | 0.129 (9) | 0.000 (7) | −0.007 (7) | −0.036 (7) |
| C14B | 0.155 (11) | 0.131 (10) | 0.135 (11) | −0.040 (8) | 0.000 (8) | −0.049 (8) |
| C15B | 0.248 (16) | 0.252 (16) | 0.248 (16) | −0.014 (10) | 0.019 (10) | −0.033 (10) |
| C16B | 0.129 (9) | 0.128 (9) | 0.110 (8) | −0.033 (7) | 0.036 (7) | −0.057 (7) |
| N17 | 0.0501 (16) | 0.0441 (15) | 0.0255 (12) | 0.0034 (12) | 0.0042 (11) | 0.0018 (11) |
| C18 | 0.0428 (17) | 0.0410 (17) | 0.0248 (14) | −0.0051 (14) | 0.0044 (12) | −0.0004 (12) |
| N19 | 0.0488 (17) | 0.0581 (18) | 0.0329 (14) | 0.0104 (15) | 0.0056 (12) | 0.0024 (12) |
| C20 | 0.0396 (16) | 0.0359 (15) | 0.0244 (13) | 0.0051 (13) | 0.0006 (11) | −0.0005 (11) |
| C21 | 0.052 (2) | 0.091 (3) | 0.056 (2) | −0.008 (2) | 0.0152 (18) | −0.032 (2) |
| C22 | 0.075 (3) | 0.112 (4) | 0.061 (3) | 0.011 (3) | 0.018 (2) | −0.046 (3) |
| C23 | 0.072 (3) | 0.047 (2) | 0.0450 (19) | 0.0216 (19) | −0.0219 (18) | −0.0117 (16) |
| C24 | 0.069 (3) | 0.048 (2) | 0.064 (2) | −0.0149 (19) | −0.002 (2) | −0.0152 (18) |
| C25 | 0.059 (2) | 0.051 (2) | 0.053 (2) | −0.0166 (18) | 0.0170 (17) | −0.0129 (17) |
| Cl26 | 0.1409 (12) | 0.0647 (7) | 0.0714 (7) | 0.0405 (7) | −0.0474 (8) | −0.0352 (6) |
| C27 | 0.0437 (17) | 0.0337 (15) | 0.0330 (15) | −0.0048 (13) | −0.0019 (13) | 0.0017 (12) |
| C28 | 0.054 (2) | 0.062 (2) | 0.049 (2) | 0.0111 (18) | 0.0050 (17) | 0.0155 (17) |
| C29 | 0.065 (2) | 0.062 (2) | 0.049 (2) | 0.008 (2) | 0.0004 (18) | 0.0187 (18) |
| N30 | 0.0636 (19) | 0.0524 (18) | 0.0380 (15) | −0.0055 (15) | −0.0010 (14) | 0.0104 (13) |
| C31 | 0.061 (2) | 0.081 (3) | 0.046 (2) | 0.008 (2) | 0.0127 (18) | 0.020 (2) |
| C32 | 0.058 (2) | 0.070 (3) | 0.047 (2) | 0.015 (2) | 0.0106 (17) | 0.0203 (18) |
| N1—C2 | 1.338 (4) | C11B—C16B | 1.3900 |
| N1—N9 | 1.357 (3) | C12B—C13B | 1.3900 |
| N1—C10 | 1.457 (4) | C12B—H12B | 0.9500 |
| C2—O3 | 1.364 (3) | C13B—C14B | 1.3900 |
| C2—C7 | 1.365 (4) | C13B—H13B | 0.9500 |
| O3—C4 | 1.376 (4) | C14B—C15B | 1.3900 |
| C4—N17 | 1.342 (3) | C14B—H14B | 0.9500 |
| C4—C5 | 1.370 (4) | C15B—C16B | 1.3900 |
| C5—C18 | 1.416 (3) | C15B—H15B | 0.9500 |
| C5—C6 | 1.537 (4) | C16B—H16B | 0.9500 |
| C6—C7 | 1.502 (4) | N17—H17A | 0.9113 |
| C6—C20 | 1.536 (3) | N17—H17B | 0.9442 |
| C6—H6 | 1.0000 | C18—N19 | 1.1496 |
| C7—C8 | 1.422 (4) | C20—C25 | 1.362 (4) |
| C8—N9 | 1.342 (4) | C20—C21 | 1.3687 |
| C8—C27 | 1.481 (4) | C21—C22 | 1.401 (5) |
| C10—C11B | 1.438 (7) | C21—H21 | 0.9500 |
| C10—C11A | 1.524 (5) | C22—C23 | 1.354 (7) |
| C10—H10A | 0.9900 | C22—H22 | 0.9500 |
| C10—H10B | 0.9900 | C23—C24 | 1.338 (6) |
| C10—H10C | 0.9900 | C23—Cl26 | 1.746 (4) |
| C10—H10D | 0.9900 | C24—C25 | 1.385 (5) |
| C11A—C12A | 1.3900 | C24—H24 | 0.9500 |
| C11A—C16A | 1.3900 | C25—H25 | 0.9500 |
| C12A—C13A | 1.3900 | C27—C32 | 1.373 (5) |
| C12A—H12A | 0.9500 | C27—C28 | 1.383 (5) |
| C13A—C14A | 1.3900 | C28—C29 | 1.382 (5) |
| C13A—H13A | 0.9500 | C28—H28 | 0.9500 |
| C14A—C15A | 1.3900 | C29—N30 | 1.320 (5) |
| C14A—H14A | 0.9500 | C29—H29 | 0.9500 |
| C15A—C16A | 1.3900 | N30—C31 | 1.318 (5) |
| C15A—H15A | 0.9500 | C31—C32 | 1.387 (5) |
| C16A—H16A | 0.9500 | C31—H31 | 0.9500 |
| C11B—C12B | 1.3900 | C32—H32 | 0.9500 |
| C2—N1—N9 | 109.8 (2) | C14A—C15A—H15A | 120.0 |
| C2—N1—C10 | 128.6 (3) | C15A—C16A—C11A | 120.0 |
| N9—N1—C10 | 121.5 (3) | C15A—C16A—H16A | 120.0 |
| N1—C2—O3 | 119.7 (2) | C11A—C16A—H16A | 120.0 |
| N1—C2—C7 | 110.8 (3) | C12B—C11B—C16B | 120.0 |
| O3—C2—C7 | 129.5 (3) | C12B—C11B—C10 | 127.8 (6) |
| C2—O3—C4 | 114.1 (2) | C16B—C11B—C10 | 111.8 (6) |
| N17—C4—C5 | 128.3 (3) | C13B—C12B—C11B | 120.0 |
| N17—C4—O3 | 109.6 (2) | C13B—C12B—H12B | 120.0 |
| C5—C4—O3 | 122.1 (3) | C11B—C12B—H12B | 120.0 |
| C4—C5—C18 | 116.3 (2) | C12B—C13B—C14B | 120.0 |
| C4—C5—C6 | 126.4 (3) | C12B—C13B—H13B | 120.0 |
| C18—C5—C6 | 117.3 (2) | C14B—C13B—H13B | 120.0 |
| C7—C6—C20 | 113.6 (2) | C15B—C14B—C13B | 120.0 |
| C7—C6—C5 | 106.7 (2) | C15B—C14B—H14B | 120.0 |
| C20—C6—C5 | 111.0 (2) | C13B—C14B—H14B | 120.0 |
| C7—C6—H6 | 108.4 | C14B—C15B—C16B | 120.0 |
| C20—C6—H6 | 108.4 | C14B—C15B—H15B | 120.0 |
| C5—C6—H6 | 108.4 | C16B—C15B—H15B | 120.0 |
| C2—C7—C8 | 102.5 (3) | C15B—C16B—C11B | 120.0 |
| C2—C7—C6 | 120.9 (3) | C15B—C16B—H16B | 120.0 |
| C8—C7—C6 | 136.6 (3) | C11B—C16B—H16B | 120.0 |
| N9—C8—C7 | 111.2 (3) | C4—N17—H17A | 116.2 |
| N9—C8—C27 | 117.1 (3) | C4—N17—H17B | 119.7 |
| C7—C8—C27 | 131.3 (3) | H17A—N17—H17B | 123.3 |
| C8—N9—N1 | 105.7 (2) | N19—C18—C5 | 179.30 (13) |
| C11B—C10—N1 | 116.0 (4) | C25—C20—C21 | 118.13 (16) |
| C11B—C10—C11A | 8.3 (5) | C25—C20—C6 | 120.9 (2) |
| N1—C10—C11A | 112.7 (4) | C21—C20—C6 | 120.99 (12) |
| C11B—C10—H10A | 113.4 | C20—C21—C22 | 120.5 (2) |
| N1—C10—H10A | 109.1 | C20—C21—H21 | 119.7 |
| C11A—C10—H10A | 109.1 | C22—C21—H21 | 119.7 |
| C11B—C10—H10B | 100.8 | C23—C22—C21 | 119.4 (3) |
| N1—C10—H10B | 109.1 | C23—C22—H22 | 120.3 |
| C11A—C10—H10B | 109.1 | C21—C22—H22 | 120.3 |
| H10A—C10—H10B | 107.8 | C24—C23—C22 | 120.6 (3) |
| C11B—C10—H10C | 108.3 | C24—C23—Cl26 | 119.6 (3) |
| N1—C10—H10C | 108.3 | C22—C23—Cl26 | 119.8 (3) |
| C11A—C10—H10C | 116.4 | C23—C24—C25 | 120.1 (4) |
| H10A—C10—H10C | 100.5 | C23—C24—H24 | 119.9 |
| H10B—C10—H10C | 8.5 | C25—C24—H24 | 119.9 |
| C11B—C10—H10D | 108.3 | C20—C25—C24 | 121.2 (3) |
| N1—C10—H10D | 108.3 | C20—C25—H25 | 119.4 |
| C11A—C10—H10D | 103.3 | C24—C25—H25 | 119.4 |
| H10A—C10—H10D | 7.3 | C32—C27—C28 | 116.5 (3) |
| H10B—C10—H10D | 114.5 | C32—C27—C8 | 123.2 (3) |
| H10C—C10—H10D | 107.4 | C28—C27—C8 | 120.0 (3) |
| C12A—C11A—C16A | 120.0 | C29—C28—C27 | 120.0 (4) |
| C12A—C11A—C10 | 120.2 (4) | C29—C28—H28 | 120.0 |
| C16A—C11A—C10 | 119.8 (4) | C27—C28—H28 | 120.0 |
| C11A—C12A—C13A | 120.0 | N30—C29—C28 | 123.8 (4) |
| C11A—C12A—H12A | 120.0 | N30—C29—H29 | 118.1 |
| C13A—C12A—H12A | 120.0 | C28—C29—H29 | 118.1 |
| C12A—C13A—C14A | 120.0 | C31—N30—C29 | 115.7 (3) |
| C12A—C13A—H13A | 120.0 | N30—C31—C32 | 125.0 (4) |
| C14A—C13A—H13A | 120.0 | N30—C31—H31 | 117.5 |
| C13A—C14A—C15A | 120.0 | C32—C31—H31 | 117.5 |
| C13A—C14A—H14A | 120.0 | C27—C32—C31 | 118.9 (4) |
| C15A—C14A—H14A | 120.0 | C27—C32—H32 | 120.5 |
| C16A—C15A—C14A | 120.0 | C31—C32—H32 | 120.5 |
| C16A—C15A—H15A | 120.0 | ||
| N9—N1—C2—O3 | −177.1 (2) | C13A—C14A—C15A—C16A | 0.0 |
| C10—N1—C2—O3 | −1.6 (5) | C14A—C15A—C16A—C11A | 0.0 |
| N9—N1—C2—C7 | 1.2 (3) | C12A—C11A—C16A—C15A | 0.0 |
| C10—N1—C2—C7 | 176.6 (3) | C10—C11A—C16A—C15A | 179.0 (7) |
| N1—C2—O3—C4 | 179.3 (3) | N1—C10—C11B—C12B | 8.6 (10) |
| C7—C2—O3—C4 | 1.4 (4) | C11A—C10—C11B—C12B | 76 (4) |
| C2—O3—C4—N17 | −175.7 (2) | N1—C10—C11B—C16B | −178.7 (6) |
| C2—O3—C4—C5 | 2.8 (4) | C11A—C10—C11B—C16B | −111 (4) |
| N17—C4—C5—C18 | −2.8 (4) | C16B—C11B—C12B—C13B | 0.0 |
| O3—C4—C5—C18 | 179.0 (2) | C10—C11B—C12B—C13B | 172.3 (10) |
| N17—C4—C5—C6 | 174.6 (3) | C11B—C12B—C13B—C14B | 0.0 |
| O3—C4—C5—C6 | −3.5 (5) | C12B—C13B—C14B—C15B | 0.0 |
| C4—C5—C6—C7 | 0.2 (4) | C13B—C14B—C15B—C16B | 0.0 |
| C18—C5—C6—C7 | 177.6 (2) | C14B—C15B—C16B—C11B | 0.0 |
| C4—C5—C6—C20 | 124.6 (3) | C12B—C11B—C16B—C15B | 0.0 |
| C18—C5—C6—C20 | −58.0 (3) | C10—C11B—C16B—C15B | −173.4 (9) |
| N1—C2—C7—C8 | −1.2 (3) | C4—C5—C18—N19 | −160 (100) |
| O3—C2—C7—C8 | 176.8 (3) | C6—C5—C18—N19 | 22 (11) |
| N1—C2—C7—C6 | 177.1 (3) | C7—C6—C20—C25 | 48.8 (3) |
| O3—C2—C7—C6 | −4.8 (5) | C5—C6—C20—C25 | −71.5 (3) |
| C20—C6—C7—C2 | −119.2 (3) | C7—C6—C20—C21 | −132.64 (18) |
| C5—C6—C7—C2 | 3.6 (4) | C5—C6—C20—C21 | 107.0 (2) |
| C20—C6—C7—C8 | 58.5 (4) | C25—C20—C21—C22 | −0.1 (3) |
| C5—C6—C7—C8 | −178.8 (3) | C6—C20—C21—C22 | −178.7 (3) |
| C2—C7—C8—N9 | 0.9 (3) | C20—C21—C22—C23 | −1.4 (6) |
| C6—C7—C8—N9 | −177.0 (3) | C21—C22—C23—C24 | 1.7 (7) |
| C2—C7—C8—C27 | −171.3 (3) | C21—C22—C23—Cl26 | −177.8 (3) |
| C6—C7—C8—C27 | 10.8 (6) | C22—C23—C24—C25 | −0.4 (7) |
| C7—C8—N9—N1 | −0.2 (3) | Cl26—C23—C24—C25 | 179.1 (3) |
| C27—C8—N9—N1 | 173.2 (2) | C21—C20—C25—C24 | 1.4 (5) |
| C2—N1—N9—C8 | −0.6 (3) | C6—C20—C25—C24 | 180.0 (3) |
| C10—N1—N9—C8 | −176.4 (3) | C23—C24—C25—C20 | −1.2 (6) |
| C2—N1—C10—C11B | −75.7 (6) | N9—C8—C27—C32 | −164.6 (3) |
| N9—N1—C10—C11B | 99.3 (6) | C7—C8—C27—C32 | 7.2 (5) |
| C2—N1—C10—C11A | −84.0 (5) | N9—C8—C27—C28 | 9.2 (5) |
| N9—N1—C10—C11A | 91.0 (4) | C7—C8—C27—C28 | −179.0 (3) |
| C11B—C10—C11A—C12A | 0(3) | C32—C27—C28—C29 | 0.5 (6) |
| N1—C10—C11A—C12A | 115.3 (5) | C8—C27—C28—C29 | −173.7 (3) |
| C11B—C10—C11A—C16A | −179 (4) | C27—C28—C29—N30 | −0.7 (7) |
| N1—C10—C11A—C16A | −63.8 (6) | C28—C29—N30—C31 | −0.3 (6) |
| C16A—C11A—C12A—C13A | 0.0 | C29—N30—C31—C32 | 1.6 (7) |
| C10—C11A—C12A—C13A | −179.0 (7) | C28—C27—C32—C31 | 0.6 (6) |
| C11A—C12A—C13A—C14A | 0.0 | C8—C27—C32—C31 | 174.6 (4) |
| C12A—C13A—C14A—C15A | 0.0 | N30—C31—C32—C27 | −1.7 (7) |
| D—H···A | D—H | H···A | D···A | D—H···A |
| N17—H17A···N30i | 0.91 | 2.08 | 2.955 (3) | 162 |
| N17—H17B···N19ii | 0.94 | 2.15 | 3.068 (3) | 165 |
| Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) −x, −y+1, −z. |
| D—H···A | D—H | H···A | D···A | D—H···A |
| N17—H17A···N30i | 0.91 | 2.08 | 2.955 (3) | 162 |
| N17—H17B···N19ii | 0.94 | 2.15 | 3.068 (3) | 165 |
| Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) −x, −y+1, −z. |
The research was realised with EU financial support, part of the FP6 project `Macrocept'.
Altomare, A., Cascarano, G., Giacovazzo, C., Guagliardi, A., Burla, M. C., Polidori, G. & Camalli, M. (1994). J. Appl. Cryst. 27, 435–436.
Dräger, M. & Gattow, G. (1971). Acta Chem. Scand. 25, 761–762.
Dyachenko, V. D. & Chernega, A. N. (2005). Russ.J. Gen. Chem. 75, 952–960.
Dyachenko, V. D. & Rusanov, E. B. (2004). Chem. Heterocycl. Compd. 40, 231–240.
Enraf–Nonius (1989). CAD-4 Software. Enraf–Nonius, Delft, The Netherlands.
Klokol, G. V., Krivokolysko, S. G., Dyachenko, V. D. & Litvinov, V. P. (1999). Chem. Heterocycl. Compd. 35, 1183–1186.
Kumar, S., Boehm, J. & Lee, J. C. (2003). Nat. Rev. Drug Discov. 2, 717–726.
Pargellis, C. & Regan, J. (2003). Curr. Opin. Investig. Drugs, 4, 566–571.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122.
Spek, A. L. (2003). J. Appl. Cryst. 36, 7–13.
p38 mitogen-activated protein (MAP) kinases are important enzymes in signal-transduction cascades which are responsive to stress stimuli, such as cytokines, ultraviolet irradiation, heat shock and osmotic shock, and are involved in cell transformation, proliferation, differentation and apoptosis. Until now there is a lack in new lead structures. Virtual screening of a database of compounds is one possibility to obtain new hints. The crystal structure of the title compound (Fig. 1) was used to consider a possible binding mode in the ATP pocket of the enzyme.
1,4-Dihydropyrano[2,3-c]pyrazole derivatives related to 2 have been published as crystal structures (Dyachenko & Rusanov, 2004). The nitrogen atoms N19 and N30 are involved in H-bond interactions with the amino group (N17) forming three-dimensional network (Fig. 2). The unsubstituted benzene ring is disordered in two orientations and was refined using a split model. The 1,4-Dihydropyrano[2,3-c]pyrazole moiety is almost planar and is nearly perpendiculare (83.7 (1)°) to the C20—C25 ring. The dihedral angle between the pyridine ring and the C20—C25 ring is 86.8 (2)°.