organic compounds
9α-Hydroxy-12-{[4-(4-methoxyphenyl)piperazin-1-yl]methyl}-4,8-dimethyl-3,14-dioxatricyclo[9.3.0.02,4]tetradec-7-en-13-one
aLaboratoire de Chimie Biomoléculaire, Substances Naturelles et Réactivité, URAC 16, Faculté des Sciences Semlalia, BP 2390, Boulevard My Abdellah, 40000 Marrakech, Morocco, bLaboratoire de Chimie de Coordination, 205 route de Narbonne, 31077 Toulouse Cedex 04, France, and cLaboratoire de Chimie Bioorganique et Analytique, URAC 22, BP 146, FSTM, Université Hassan II, Mohammedia-Casablanca 20810 Mohammedia, Morocco
*Correspondence e-mail: mberraho@yahoo.fr
The title compound, C26H36N2O5, was synthesized from 9α-hydroxyparthenolide (9α-hydroxy-4,8-dimethyl-12-methylene-3,14-dioxatricyclo[9.3.0.02,4]tetradec-7-en-13-one), wich was isolated from the chloroform extract of the aerial parts of Anvillea radiata. The molecule is built up from fused five- and ten-membered rings with the methoxyphenylpiperazine group as a substituent. The ten-membered ring adopts an approximate chair–chair conformation, while the piperazine ring displays a chair conformation and the five-membered ring a flattened the C(H)—C—C(H) atoms representing the flap lie out of the mean plane through the remaining four atoms by 0.343 (3) Å. The dihedral angle between the mean planes of the ten-membered ring and the lactone ring is 18.12 (14)°. An intramolecular O—H⋯N hydrogen bond occurs. The features weak C—H⋯O interactions.
Related literature
For background to the medicinal uses of the plant Anvillea radiata, see: Abdel Sattar et al. (1996); Bellakhdar (1997); El Hassany et al. (2004); Qureshi et al. (1990). For ring-puckering parameters, see: Cremer & Pople (1975).
Experimental
Crystal data
|
Refinement
|
Data collection: CrysAlis PRO (Agilent, 2010); cell CrysAlis PRO; data reduction: CrysAlis PRO; 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)and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supporting information
10.1107/S1600536812003662/ds2172sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812003662/ds2172Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536812003662/ds2172Isup3.cml
The mixture of 9α-hydroxyparthenolide (1 g, (3.78 mmol) and one equivalent of 1-(4-methoxyphenylpipirazine) in EtOH (30 ml) was stirred for one night at room temperature. The next day the reaction was stopped by adding water (20 ml) and extracted three times with ethyl acetate (3 × 30 ml). The combined organic layers were dried over anhydrous MgSO4, filtered and concentrated under vacuum to give 1.34 g (2.94 mmol) of the title compound, which was recrystallized in ethyl acetate.
All H atoms were fixed geometrically and treated as riding with C—H = 0.96 Å (methyl), 0.97 Å (methylene), 0.98 Å (methine) with Uiso(H) = 1.2Ueq(methylene, methine) or Uiso(H) = 1.5Ueq(methyl, OH). In the absence of significant
the could not be reliably determined and any references to the were removed.Data collection: CrysAlis PRO (Agilent, 2010); cell
CrysAlis PRO (Agilent, 2010); data reduction: CrysAlis PRO (Agilent, 2010); 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)and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999).C26H36N2O5 | F(000) = 984 |
Mr = 456.57 | Dx = 1.253 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 14543 reflections |
a = 6.7066 (7) Å | θ = 3.1–26.4° |
b = 11.9033 (11) Å | µ = 0.09 mm−1 |
c = 30.322 (4) Å | T = 180 K |
V = 2420.6 (4) Å3 | Platelet, colourless |
Z = 4 | 0.33 × 0.17 × 0.04 mm |
Agilent Xcalibur Sapphire1 (long nozzle) diffractometer | 4925 independent reflections |
Radiation source: fine-focus sealed tube | 3663 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.055 |
Detector resolution: 8.2632 pixels mm-1 | θmax = 26.4°, θmin = 3.1° |
ω scans | h = −8→8 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010) | k = −14→14 |
Tmin = 0.732, Tmax = 1.000 | l = −37→37 |
14543 measured reflections |
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)] = 0.055 | H-atom parameters constrained |
wR(F2) = 0.130 | w = 1/[σ2(Fo2) + (0.0567P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max = 0.001 |
4925 reflections | Δρmax = 0.25 e Å−3 |
303 parameters | Δρmin = −0.23 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0073 (12) |
C26H36N2O5 | V = 2420.6 (4) Å3 |
Mr = 456.57 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 6.7066 (7) Å | µ = 0.09 mm−1 |
b = 11.9033 (11) Å | T = 180 K |
c = 30.322 (4) Å | 0.33 × 0.17 × 0.04 mm |
Agilent Xcalibur Sapphire1 (long nozzle) diffractometer | 4925 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010) | 3663 reflections with I > 2σ(I) |
Tmin = 0.732, Tmax = 1.000 | Rint = 0.055 |
14543 measured reflections |
R[F2 > 2σ(F2)] = 0.055 | 0 restraints |
wR(F2) = 0.130 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.25 e Å−3 |
4925 reflections | Δρmin = −0.23 e Å−3 |
303 parameters |
Experimental. Empirical absorption correction using spherical harmonics, implemented in SCALE3 ABSPACK scaling algorithm. CrysAlisPro (Agilent Technologies) |
Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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 > 2σ(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 | 0.4429 (4) | 0.9320 (2) | 0.06430 (8) | 0.0236 (6) | |
H1 | 0.5156 | 0.9747 | 0.0877 | 0.028* | |
C2 | 0.3207 (4) | 1.0088 (2) | 0.03673 (9) | 0.0276 (6) | |
H2 | 0.2198 | 0.9692 | 0.0181 | 0.033* | |
C4 | 0.2646 (4) | 1.1235 (2) | 0.04810 (10) | 0.0328 (7) | |
C5 | 0.0642 (5) | 1.1608 (2) | 0.03175 (11) | 0.0440 (8) | |
H5A | 0.0334 | 1.1215 | 0.0038 | 0.053* | |
H5B | 0.0681 | 1.2425 | 0.0256 | 0.053* | |
C6 | −0.1006 (5) | 1.1365 (3) | 0.06533 (12) | 0.0500 (9) | |
H6A | −0.0928 | 1.1917 | 0.0897 | 0.060* | |
H6B | −0.2323 | 1.1447 | 0.0510 | 0.060* | |
C7 | −0.0803 (4) | 1.0198 (2) | 0.08363 (11) | 0.0377 (7) | |
H7 | −0.1012 | 0.9598 | 0.0635 | 0.045* | |
C8 | −0.0368 (5) | 0.9912 (3) | 0.12466 (10) | 0.0396 (8) | |
C9 | 0.0201 (4) | 0.8728 (3) | 0.13688 (10) | 0.0382 (7) | |
H9 | −0.0145 | 0.8614 | 0.1686 | 0.046* | |
C10 | 0.2457 (4) | 0.8572 (2) | 0.13205 (9) | 0.0306 (6) | |
H10A | 0.2871 | 0.7920 | 0.1502 | 0.037* | |
H10B | 0.3133 | 0.9245 | 0.1440 | 0.037* | |
C11 | 0.3171 (4) | 0.8384 (2) | 0.08456 (8) | 0.0227 (6) | |
H11 | 0.1959 | 0.8291 | 0.0657 | 0.027* | |
C12 | 0.4457 (4) | 0.7345 (2) | 0.07835 (8) | 0.0243 (6) | |
H12 | 0.5218 | 0.7194 | 0.1061 | 0.029* | |
C13 | 0.5872 (4) | 0.7650 (2) | 0.04265 (9) | 0.0266 (6) | |
C15 | 0.3307 (4) | 0.6301 (2) | 0.06537 (9) | 0.0288 (6) | |
H15A | 0.2635 | 0.6437 | 0.0368 | 0.035* | |
H15B | 0.4256 | 0.5673 | 0.0612 | 0.035* | |
C16 | 0.2748 (4) | 0.5460 (2) | 0.13653 (9) | 0.0309 (7) | |
H16A | 0.3659 | 0.6011 | 0.1504 | 0.037* | |
H16B | 0.3552 | 0.4806 | 0.1271 | 0.037* | |
C17 | 0.1246 (4) | 0.5089 (3) | 0.16934 (9) | 0.0358 (7) | |
H17A | 0.1933 | 0.4746 | 0.1949 | 0.043* | |
H17B | 0.0488 | 0.5749 | 0.1800 | 0.043* | |
C18 | −0.1058 (4) | 0.4730 (2) | 0.11077 (9) | 0.0327 (7) | |
H18A | −0.1952 | 0.5357 | 0.1190 | 0.039* | |
H18B | −0.1878 | 0.4138 | 0.0967 | 0.039* | |
C19 | 0.0472 (4) | 0.5141 (2) | 0.07857 (9) | 0.0328 (7) | |
H19A | 0.1264 | 0.4495 | 0.0678 | 0.039* | |
H19B | −0.0213 | 0.5480 | 0.0529 | 0.039* | |
C20 | −0.1351 (4) | 0.3686 (2) | 0.18020 (9) | 0.0271 (6) | |
C21 | −0.0596 (5) | 0.3360 (2) | 0.22117 (9) | 0.0383 (7) | |
H21 | 0.0699 | 0.3598 | 0.2297 | 0.046* | |
C22 | −0.1693 (5) | 0.2703 (3) | 0.24923 (10) | 0.0429 (8) | |
H22 | −0.1147 | 0.2493 | 0.2769 | 0.051* | |
C23 | −0.3549 (5) | 0.2348 (3) | 0.23802 (10) | 0.0413 (8) | |
C24 | −0.4336 (5) | 0.2676 (3) | 0.19821 (11) | 0.0467 (8) | |
H24 | −0.5644 | 0.2447 | 0.1902 | 0.056* | |
C25 | −0.3234 (4) | 0.3338 (3) | 0.16971 (10) | 0.0387 (7) | |
H25 | −0.3798 | 0.3555 | 0.1423 | 0.046* | |
C26 | 0.3438 (5) | 1.1828 (3) | 0.08780 (12) | 0.0526 (10) | |
H26A | 0.4715 | 1.1494 | 0.0964 | 0.079* | |
H26B | 0.2485 | 1.1756 | 0.1121 | 0.079* | |
H26C | 0.3634 | 1.2625 | 0.0809 | 0.079* | |
C27 | −0.0231 (7) | 1.0695 (3) | 0.16314 (13) | 0.0744 (13) | |
H27A | −0.0360 | 1.1472 | 0.1528 | 0.112* | |
H27B | 0.1062 | 1.0598 | 0.1777 | 0.112* | |
H27C | −0.1304 | 1.0527 | 0.1841 | 0.112* | |
C28 | −0.6231 (7) | 0.1128 (6) | 0.2554 (2) | 0.134 (3) | |
H28A | −0.7310 | 0.1678 | 0.2527 | 0.201* | |
H28B | −0.6591 | 0.0564 | 0.2776 | 0.201* | |
H28C | −0.6019 | 0.0758 | 0.2269 | 0.201* | |
N1 | 0.1814 (3) | 0.59719 (17) | 0.09797 (7) | 0.0254 (5) | |
N2 | −0.0123 (3) | 0.42794 (18) | 0.15021 (7) | 0.0286 (5) | |
O3 | 0.4135 (3) | 1.10270 (15) | 0.01501 (7) | 0.0388 (5) | |
O4 | −0.0873 (3) | 0.79295 (17) | 0.11206 (8) | 0.0440 (6) | |
H4 | −0.0112 | 0.7400 | 0.1049 | 0.066* | |
O5 | −0.4482 (4) | 0.1672 (2) | 0.26829 (8) | 0.0655 (8) | |
O12 | 0.6957 (3) | 0.70592 (16) | 0.02200 (7) | 0.0392 (5) | |
O14 | 0.5817 (3) | 0.87658 (14) | 0.03489 (6) | 0.0277 (4) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0273 (14) | 0.0170 (13) | 0.0264 (13) | 0.0045 (11) | 0.0020 (12) | −0.0043 (11) |
C2 | 0.0301 (14) | 0.0167 (12) | 0.0360 (15) | −0.0029 (12) | −0.0034 (13) | 0.0024 (13) |
C4 | 0.0362 (15) | 0.0138 (13) | 0.0484 (18) | 0.0002 (12) | −0.0031 (14) | −0.0001 (13) |
C5 | 0.0467 (18) | 0.0231 (15) | 0.062 (2) | 0.0085 (14) | −0.0062 (17) | 0.0091 (15) |
C6 | 0.0412 (18) | 0.0364 (18) | 0.072 (2) | 0.0170 (16) | −0.0093 (18) | 0.0051 (18) |
C7 | 0.0255 (14) | 0.0313 (16) | 0.056 (2) | 0.0021 (14) | −0.0035 (15) | −0.0011 (15) |
C8 | 0.0371 (17) | 0.0342 (17) | 0.0476 (19) | 0.0160 (15) | 0.0053 (15) | −0.0058 (15) |
C9 | 0.0415 (17) | 0.0354 (16) | 0.0377 (16) | 0.0084 (14) | 0.0085 (15) | −0.0036 (15) |
C10 | 0.0373 (15) | 0.0254 (15) | 0.0292 (15) | 0.0072 (13) | 0.0056 (13) | 0.0000 (13) |
C11 | 0.0273 (13) | 0.0154 (12) | 0.0254 (13) | 0.0033 (11) | −0.0001 (11) | −0.0005 (11) |
C12 | 0.0321 (14) | 0.0164 (13) | 0.0243 (13) | 0.0055 (11) | 0.0037 (12) | −0.0002 (11) |
C13 | 0.0318 (14) | 0.0178 (13) | 0.0301 (15) | 0.0059 (12) | 0.0005 (13) | −0.0005 (12) |
C15 | 0.0411 (15) | 0.0178 (13) | 0.0275 (14) | 0.0053 (13) | 0.0049 (13) | 0.0000 (12) |
C16 | 0.0339 (16) | 0.0270 (15) | 0.0319 (15) | −0.0020 (12) | −0.0040 (13) | 0.0092 (13) |
C17 | 0.0423 (17) | 0.0355 (16) | 0.0294 (15) | −0.0113 (14) | −0.0069 (14) | 0.0075 (13) |
C18 | 0.0419 (17) | 0.0257 (14) | 0.0304 (15) | −0.0056 (13) | −0.0096 (14) | 0.0057 (12) |
C19 | 0.0479 (17) | 0.0237 (14) | 0.0269 (14) | −0.0051 (14) | −0.0052 (14) | 0.0025 (12) |
C20 | 0.0375 (15) | 0.0154 (12) | 0.0283 (14) | 0.0028 (11) | −0.0006 (12) | −0.0014 (11) |
C21 | 0.0473 (18) | 0.0352 (17) | 0.0325 (15) | −0.0144 (15) | −0.0045 (15) | 0.0053 (14) |
C22 | 0.059 (2) | 0.0404 (18) | 0.0295 (15) | −0.0120 (17) | −0.0055 (16) | 0.0058 (15) |
C23 | 0.0438 (18) | 0.0407 (18) | 0.0395 (18) | −0.0049 (15) | 0.0043 (15) | 0.0094 (15) |
C24 | 0.0338 (16) | 0.048 (2) | 0.058 (2) | −0.0046 (16) | −0.0044 (16) | 0.0198 (17) |
C25 | 0.0367 (16) | 0.0369 (17) | 0.0425 (17) | 0.0059 (15) | −0.0034 (14) | 0.0138 (15) |
C26 | 0.056 (2) | 0.0249 (16) | 0.077 (3) | 0.0041 (16) | −0.0127 (19) | −0.0184 (17) |
C27 | 0.103 (3) | 0.056 (2) | 0.064 (2) | 0.039 (2) | −0.001 (2) | −0.022 (2) |
C28 | 0.076 (3) | 0.183 (6) | 0.143 (5) | −0.071 (4) | −0.035 (3) | 0.119 (5) |
N1 | 0.0358 (13) | 0.0180 (11) | 0.0223 (11) | −0.0021 (10) | −0.0044 (10) | 0.0038 (9) |
N2 | 0.0372 (13) | 0.0231 (11) | 0.0255 (12) | −0.0044 (10) | −0.0039 (11) | 0.0039 (10) |
O3 | 0.0443 (11) | 0.0162 (9) | 0.0558 (13) | −0.0018 (9) | 0.0035 (11) | 0.0104 (9) |
O4 | 0.0342 (12) | 0.0337 (12) | 0.0640 (14) | −0.0016 (10) | 0.0071 (11) | 0.0012 (11) |
O5 | 0.0575 (15) | 0.0798 (19) | 0.0593 (15) | −0.0293 (15) | −0.0015 (13) | 0.0339 (15) |
O12 | 0.0498 (13) | 0.0286 (10) | 0.0390 (12) | 0.0102 (10) | 0.0163 (10) | −0.0017 (9) |
O14 | 0.0314 (10) | 0.0177 (9) | 0.0341 (10) | 0.0027 (8) | 0.0081 (9) | 0.0003 (8) |
C1—O14 | 1.448 (3) | C16—C17 | 1.483 (4) |
C1—C2 | 1.485 (4) | C16—H16A | 0.9900 |
C1—C11 | 1.526 (3) | C16—H16B | 0.9900 |
C1—H1 | 1.0000 | C17—N2 | 1.452 (3) |
C2—O3 | 1.439 (3) | C17—H17A | 0.9900 |
C2—C4 | 1.457 (4) | C17—H17B | 0.9900 |
C2—H2 | 1.0000 | C18—N2 | 1.453 (3) |
C4—O3 | 1.437 (4) | C18—C19 | 1.499 (4) |
C4—C26 | 1.494 (4) | C18—H18A | 0.9900 |
C4—C5 | 1.500 (4) | C18—H18B | 0.9900 |
C5—C6 | 1.530 (4) | C19—N1 | 1.460 (3) |
C5—H5A | 0.9900 | C19—H19A | 0.9900 |
C5—H5B | 0.9900 | C19—H19B | 0.9900 |
C6—C7 | 1.502 (4) | C20—C25 | 1.367 (4) |
C6—H6A | 0.9900 | C20—C21 | 1.396 (4) |
C6—H6B | 0.9900 | C20—N2 | 1.416 (3) |
C7—C8 | 1.323 (4) | C21—C22 | 1.370 (4) |
C7—H7 | 0.9500 | C21—H21 | 0.9500 |
C8—C27 | 1.496 (5) | C22—C23 | 1.358 (4) |
C8—C9 | 1.507 (4) | C22—H22 | 0.9500 |
C9—O4 | 1.410 (4) | C23—O5 | 1.371 (4) |
C9—C10 | 1.532 (4) | C23—C24 | 1.374 (4) |
C9—H9 | 1.0000 | C24—C25 | 1.384 (4) |
C10—C11 | 1.534 (4) | C24—H24 | 0.9500 |
C10—H10A | 0.9900 | C25—H25 | 0.9500 |
C10—H10B | 0.9900 | C26—H26A | 0.9800 |
C11—C12 | 1.520 (3) | C26—H26B | 0.9800 |
C11—H11 | 1.0000 | C26—H26C | 0.9800 |
C12—C13 | 1.484 (4) | C27—H27A | 0.9800 |
C12—C15 | 1.515 (4) | C27—H27B | 0.9800 |
C12—H12 | 1.0000 | C27—H27C | 0.9800 |
C13—O12 | 1.190 (3) | C28—O5 | 1.396 (5) |
C13—O14 | 1.350 (3) | C28—H28A | 0.9800 |
C15—N1 | 1.460 (3) | C28—H28B | 0.9800 |
C15—H15A | 0.9900 | C28—H28C | 0.9800 |
C15—H15B | 0.9900 | O4—H4 | 0.8400 |
C16—N1 | 1.460 (3) | ||
O14—C1—C2 | 106.8 (2) | N1—C16—H16A | 109.3 |
O14—C1—C11 | 105.74 (18) | C17—C16—H16A | 109.3 |
C2—C1—C11 | 111.8 (2) | N1—C16—H16B | 109.3 |
O14—C1—H1 | 110.8 | C17—C16—H16B | 109.3 |
C2—C1—H1 | 110.8 | H16A—C16—H16B | 107.9 |
C11—C1—H1 | 110.8 | N2—C17—C16 | 111.0 (2) |
O3—C2—C4 | 59.49 (17) | N2—C17—H17A | 109.4 |
O3—C2—C1 | 119.8 (2) | C16—C17—H17A | 109.4 |
C4—C2—C1 | 125.9 (2) | N2—C17—H17B | 109.4 |
O3—C2—H2 | 113.6 | C16—C17—H17B | 109.4 |
C4—C2—H2 | 113.6 | H17A—C17—H17B | 108.0 |
C1—C2—H2 | 113.6 | N2—C18—C19 | 111.2 (2) |
O3—C4—C2 | 59.63 (17) | N2—C18—H18A | 109.4 |
O3—C4—C26 | 113.4 (3) | C19—C18—H18A | 109.4 |
C2—C4—C26 | 122.8 (3) | N2—C18—H18B | 109.4 |
O3—C4—C5 | 116.3 (2) | C19—C18—H18B | 109.4 |
C2—C4—C5 | 115.5 (3) | H18A—C18—H18B | 108.0 |
C26—C4—C5 | 116.4 (3) | N1—C19—C18 | 112.4 (2) |
C4—C5—C6 | 111.8 (3) | N1—C19—H19A | 109.1 |
C4—C5—H5A | 109.3 | C18—C19—H19A | 109.1 |
C6—C5—H5A | 109.3 | N1—C19—H19B | 109.1 |
C4—C5—H5B | 109.3 | C18—C19—H19B | 109.1 |
C6—C5—H5B | 109.3 | H19A—C19—H19B | 107.9 |
H5A—C5—H5B | 107.9 | C25—C20—C21 | 117.2 (3) |
C7—C6—C5 | 110.8 (3) | C25—C20—N2 | 122.6 (2) |
C7—C6—H6A | 109.5 | C21—C20—N2 | 119.9 (2) |
C5—C6—H6A | 109.5 | C22—C21—C20 | 121.1 (3) |
C7—C6—H6B | 109.5 | C22—C21—H21 | 119.5 |
C5—C6—H6B | 109.5 | C20—C21—H21 | 119.5 |
H6A—C6—H6B | 108.1 | C23—C22—C21 | 121.0 (3) |
C8—C7—C6 | 127.2 (3) | C23—C22—H22 | 119.5 |
C8—C7—H7 | 116.4 | C21—C22—H22 | 119.5 |
C6—C7—H7 | 116.4 | C22—C23—O5 | 115.7 (3) |
C7—C8—C27 | 126.0 (3) | C22—C23—C24 | 118.9 (3) |
C7—C8—C9 | 121.9 (3) | O5—C23—C24 | 125.4 (3) |
C27—C8—C9 | 112.0 (3) | C23—C24—C25 | 120.3 (3) |
O4—C9—C8 | 111.7 (3) | C23—C24—H24 | 119.8 |
O4—C9—C10 | 111.8 (2) | C25—C24—H24 | 119.8 |
C8—C9—C10 | 109.9 (3) | C20—C25—C24 | 121.4 (3) |
O4—C9—H9 | 107.7 | C20—C25—H25 | 119.3 |
C8—C9—H9 | 107.7 | C24—C25—H25 | 119.3 |
C10—C9—H9 | 107.7 | C4—C26—H26A | 109.5 |
C9—C10—C11 | 114.6 (2) | C4—C26—H26B | 109.5 |
C9—C10—H10A | 108.6 | H26A—C26—H26B | 109.5 |
C11—C10—H10A | 108.6 | C4—C26—H26C | 109.5 |
C9—C10—H10B | 108.6 | H26A—C26—H26C | 109.5 |
C11—C10—H10B | 108.6 | H26B—C26—H26C | 109.5 |
H10A—C10—H10B | 107.6 | C8—C27—H27A | 109.5 |
C12—C11—C1 | 103.3 (2) | C8—C27—H27B | 109.5 |
C12—C11—C10 | 114.3 (2) | H27A—C27—H27B | 109.5 |
C1—C11—C10 | 116.4 (2) | C8—C27—H27C | 109.5 |
C12—C11—H11 | 107.5 | H27A—C27—H27C | 109.5 |
C1—C11—H11 | 107.5 | H27B—C27—H27C | 109.5 |
C10—C11—H11 | 107.5 | O5—C28—H28A | 109.5 |
C13—C12—C15 | 109.7 (2) | O5—C28—H28B | 109.5 |
C13—C12—C11 | 104.7 (2) | H28A—C28—H28B | 109.5 |
C15—C12—C11 | 114.2 (2) | O5—C28—H28C | 109.5 |
C13—C12—H12 | 109.4 | H28A—C28—H28C | 109.5 |
C15—C12—H12 | 109.4 | H28B—C28—H28C | 109.5 |
C11—C12—H12 | 109.4 | C16—N1—C15 | 111.1 (2) |
O12—C13—O14 | 120.4 (2) | C16—N1—C19 | 107.7 (2) |
O12—C13—C12 | 129.1 (2) | C15—N1—C19 | 109.4 (2) |
O14—C13—C12 | 110.5 (2) | C20—N2—C17 | 116.3 (2) |
N1—C15—C12 | 113.2 (2) | C20—N2—C18 | 117.5 (2) |
N1—C15—H15A | 108.9 | C17—N2—C18 | 110.9 (2) |
C12—C15—H15A | 108.9 | C4—O3—C2 | 60.88 (17) |
N1—C15—H15B | 108.9 | C9—O4—H4 | 109.5 |
C12—C15—H15B | 108.9 | C23—O5—C28 | 117.9 (3) |
H15A—C15—H15B | 107.8 | C13—O14—C1 | 111.0 (2) |
N1—C16—C17 | 111.7 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
O4—H4···N1 | 0.84 | 2.14 | 2.977 (4) | 170 |
C2—H2···O12i | 1.00 | 2.42 | 3.225 (4) | 137 |
C5—H5B···O3ii | 0.99 | 2.45 | 3.310 (4) | 145 |
C7—H7···O14iii | 0.95 | 2.50 | 3.198 (4) | 130 |
C15—H15A···O12i | 0.99 | 2.57 | 3.413 (4) | 143 |
C15—H15A···O14i | 0.99 | 2.50 | 3.469 (4) | 165 |
Symmetry codes: (i) x−1/2, −y+3/2, −z; (ii) x−1/2, −y+5/2, −z; (iii) x−1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C26H36N2O5 |
Mr | 456.57 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 180 |
a, b, c (Å) | 6.7066 (7), 11.9033 (11), 30.322 (4) |
V (Å3) | 2420.6 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.33 × 0.17 × 0.04 |
Data collection | |
Diffractometer | Agilent Xcalibur Sapphire1 (long nozzle) diffractometer |
Absorption correction | Multi-scan (CrysAlis PRO; Agilent, 2010) |
Tmin, Tmax | 0.732, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 14543, 4925, 3663 |
Rint | 0.055 |
(sin θ/λ)max (Å−1) | 0.625 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.055, 0.130, 1.04 |
No. of reflections | 4925 |
No. of parameters | 303 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.25, −0.23 |
Computer programs: CrysAlis PRO (Agilent, 2010), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997)and PLATON (Spek, 2009), WinGX (Farrugia, 1999).
D—H···A | D—H | H···A | D···A | D—H···A |
O4—H4···N1 | 0.84 | 2.14 | 2.977 (4) | 170 |
C2—H2···O12i | 1.00 | 2.42 | 3.225 (4) | 137 |
C5—H5B···O3ii | 0.99 | 2.45 | 3.310 (4) | 145 |
C7—H7···O14iii | 0.95 | 2.50 | 3.198 (4) | 130 |
C15—H15A···O12i | 0.99 | 2.57 | 3.413 (4) | 143 |
C15—H15A···O14i | 0.99 | 2.50 | 3.469 (4) | 165 |
Symmetry codes: (i) x−1/2, −y+3/2, −z; (ii) x−1/2, −y+5/2, −z; (iii) x−1, y, z. |
Acknowledgements
The authors thank Professor El Ammari for discussions on the
of the structure.References
Abdel Sattar, E., Galal, A. M. & Mossa, J. S. (1996). J. Nat. Prod. 59, 403–405. CrossRef CAS PubMed Google Scholar
Agilent (2010). CrysAlis PRO. Agilent Technologies, Yarnton, Oxfordshire, England. Google Scholar
Bellakhdar, J. (1997). La Pharmacopée Marocaine Traditionnelle, pp. 272–274. Paris: Ibis Press. Google Scholar
Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc. 97, 1354–1358. CrossRef CAS Web of Science Google Scholar
El Hassany, B., El Hanbali, F., Akssira, M., Mellouki, F., Haidou, A. & Barero, A. F. (2004). Fitoterapia, 75, 573–576. Web of Science CrossRef PubMed CAS Google Scholar
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565. CrossRef IUCr Journals Google Scholar
Farrugia, L. J. (1999). J. Appl. Cryst. 32, 837–838. CrossRef CAS IUCr Journals Google Scholar
Qureshi, S., Ageel, A. M., Al-Yahya, M. A., Tariq, M., Mossa, J. S. & Shah, A. H. (1990). J. Ethnopharmacol. 28, 157-162. CrossRef CAS PubMed Web of Science Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS IUCr Journals 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.
Our work lies within the framework of the valorization of medicinals plants and concerning the Anvillea radiata wich is a plant that grows in northern Africa and particularly found in the two Maghreb countries, Morocco and Algeria. This plant is used in traditional local medicine for the treatment of dysentery, gastric-intestinal disorders (Bellakhdar, 1997), hypoglycemic activity (Qureshi et al., 1990), and has been reported to have antitumoral activity (Abdel Sattar et al., 1996). In our study of different Moroccan endemic plants, we have demonstrated that the aerial parts of Anvillea radiata could be used as a renewable source of 9-hydroxyparthenolide (El Hassany et al., 2004). In order to prepare products with high added value that can be used in pharmacology and cosmetics industry, we studied the chemical reactivity of this major constituent of Anvillea radiata. Thus, treatment of this sesquiterpene lactone by an equivalent amount of 1-(4-methoxyphenylpiperazine) in ethanol led to the title compound with a yield of 78%. The crystal structure of (I) is reported herein. The molecule contains a fused ring system and methoxyphenylpiperazine group as a substituent to a lactone ring. The molecular structure of (I), Fig. 1, shows the lactone ring to adopt an envelope conformation, as indicated by Cremer & Pople (1975) puckering parameters Q = 0.216 (3) Å and ϕ = 69.7 (8)°. The atom C11 deviate from the mean plane through other four atoms in the ring by 0.343 (2) Å. The ten-membered ring displays an approximate chair–chair conformation, while the piperazine ring has a perfect chair conformation with QT = 0.557 (3) Å, θ = 3.4 (3)° and ϕ2 = 33 (6)°. In the crystal structure, the molecules are linked by C—H···O intermolecular hydrogen bonds into chains along the b axis (Table 1, Fig.2). In addition an intramolecular O—H···N hydrogen bond is also observed.