organic compounds
Ethyl (2,5-dioxo-1-phenyl-2,3-dihydro-1H,5H-1-benzofuro[3,2-d]imidazo[1,2-a]pyrimidin-3-yl)acetate
aCenter of Oncology, People's Hospital of Hubei Medical University, Shiyan Hubei 442000, People's Republic of China
*Correspondence e-mail: pchen6686@yahoo.com.cn
In the title compound, C22H17N3O5, synthesized via the aza-Wittig reaction of ethyl 3-(phenyliminomethyleneamino)benzofuran-2-carboxylate, benzene isocyanate and diethyl 2-aminosuccinate, the imidazo[1,2-a]benzo[4,5]furo[2,3-d]pyrimidine ring system is essentially planar (r.m.s. deviation for all 16 non-H atoms = 0.020 Å). The phenyl ring is twisted with respect to this ring system, making a dihedral angle of 54.23 (4)°. The crystal packing is stabilized by weak intermolecular C—H⋯O interactions.
Related literature
The title compound may be used as a precursor for obtaining bioactive molecules, see: Bellarosa et al. (1996). For the biological activity of benzofuropyrimidine derivatives, see: Moneam et al. (2004); Bodke et al. (2003); Palacios et al. (2007); Duval et al. (2005); Teimouria et al. (2006). For the crystal structures of other fused pyrimidinone derivatives, see: Hu et al. (2005, 2006, 2007, 2008).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2001); cell SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).
Supporting information
https://doi.org/10.1107/S1600536810029521/bt5306sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810029521/bt5306Isup2.hkl
The title compound was obtained in excellent yield via aza-Wittig reaction. Crystals suitable for single-crystal X-ray diffraction were obtained by recrystallization from a mixed solvent of ethanol and dichloromethane (1:2 v/v) at room temperature.
All H-atoms were found in a difference map but positioned with idealized geometry and refined with Uiso(H)= 1.5Ueq(C) for methyl H atoms and Uiso(H) =1.2Ueq(C) for all other H atoms using a riding model with C—H ranging from 0.93Å to 0.97Å.
The derivatives of benzofuropyrimidine are of great importance because of their remarkable biological properties. Some of them have shown good analgesic, anti-inflammatory and antimicrobial activities (Moneam et al., 2004 and Bodke et al., 2003). On the other hand, heterocycles containing an imidazolone nucleus also exhibit various biological activities. Several of them have shown good antibacterial, antifungal activities or are used as leukotriene B4 receptor antagonist and potassium channel openers (Palacios et al., 2007 and Duval et al., 2005, Teimouria et al., 2006). The introduction of an imidazolone ring to the benzofuro[3,2-d]pyrimidin-4(3H)-one system is expected to influence the biological activities significantly. As a part of our ongoing investigations on the preparation of derivatives of
(Hu et al., 2005, 2006, 2007, 2008), we have synthesized and structurally characterized the title compound, and here we report its (Fig. 1).In the
of the title compound, all ring atoms of imidazo[1,2-a]benzo[4,5]furo [2,3-d]pyrimidine system are essentially coplanar, with maximum deviations -0.039 (3)Å and 0.057 (1)Å for O3 and N2, respectively. The phenyl (C11—C16) ring is twisted with respect to it, making dihedral angles of 54.23 (4)°. The structure is mainly stabilized by weak C—H···O interactions.The title compound may be used as a precursor for obtaining bioactive molecules, see: Bellarosa et al. (1996). For the biological activity of benzofuropyrimidine derivatives, see: Moneam et al. (2004); Bodke et al. (2003); Palacios et al. (2007); Duval et al. (2005); Teimouria et al. (2006). For the crystal structures of other fused pyrimidinone derivatives, see: Hu et al. (2005, 2006, 2007, 2008).
Data collection: SMART (Bruker, 2001); cell
SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus (Bruker, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound, showing the atom-labeling scheme. Displacement ellipsoids are at the 50% probability level. |
C22H17N3O5 | Z = 2 |
Mr = 403.39 | F(000) = 420 |
Triclinic, P1 | Dx = 1.416 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.5418 (12) Å | Cell parameters from 2477 reflections |
b = 8.6553 (12) Å | θ = 6.0–25.0° |
c = 14.519 (2) Å | µ = 0.10 mm−1 |
α = 86.642 (2)° | T = 292 K |
β = 82.873 (2)° | Block, colourless |
γ = 62.619 (2)° | 0.30 × 0.20 × 0.10 mm |
V = 945.8 (2) Å3 |
Bruker SMART 4K CCD area-detector diffractometer | 3663 independent reflections |
Radiation source: fine-focus sealed tube | 2844 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.084 |
φ and ω scans | θmax = 26.0°, θmin = 2.7° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | h = −10→10 |
Tmin = 0.970, Tmax = 0.990 | k = −5→10 |
5574 measured reflections | l = −17→17 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.045 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.129 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0729P)2 + 0.002P] where P = (Fo2 + 2Fc2)/3 |
3663 reflections | (Δ/σ)max = 0.003 |
272 parameters | Δρmax = 0.25 e Å−3 |
0 restraints | Δρmin = −0.35 e Å−3 |
C22H17N3O5 | γ = 62.619 (2)° |
Mr = 403.39 | V = 945.8 (2) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.5418 (12) Å | Mo Kα radiation |
b = 8.6553 (12) Å | µ = 0.10 mm−1 |
c = 14.519 (2) Å | T = 292 K |
α = 86.642 (2)° | 0.30 × 0.20 × 0.10 mm |
β = 82.873 (2)° |
Bruker SMART 4K CCD area-detector diffractometer | 3663 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | 2844 reflections with I > 2σ(I) |
Tmin = 0.970, Tmax = 0.990 | Rint = 0.084 |
5574 measured reflections |
R[F2 > 2σ(F2)] = 0.045 | 0 restraints |
wR(F2) = 0.129 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.25 e Å−3 |
3663 reflections | Δρmin = −0.35 e Å−3 |
272 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
C1 | 0.8363 (2) | 0.04672 (19) | 0.37332 (10) | 0.0385 (4) | |
C2 | 0.9489 (2) | 0.0189 (2) | 0.29234 (11) | 0.0477 (4) | |
H2 | 0.9210 | 0.0987 | 0.2437 | 0.057* | |
C3 | 1.1056 (2) | −0.1346 (2) | 0.28769 (11) | 0.0492 (4) | |
H3 | 1.1857 | −0.1587 | 0.2345 | 0.059* | |
C4 | 1.1467 (2) | −0.2539 (2) | 0.36064 (11) | 0.0461 (4) | |
H4 | 1.2535 | −0.3556 | 0.3551 | 0.055* | |
C5 | 1.0323 (2) | −0.2243 (2) | 0.44088 (11) | 0.0414 (4) | |
H5 | 1.0602 | −0.3045 | 0.4893 | 0.050* | |
C6 | 0.8732 (2) | −0.07023 (19) | 0.44725 (10) | 0.0361 (3) | |
C7 | 0.72423 (19) | 0.00914 (18) | 0.51685 (10) | 0.0352 (3) | |
C8 | 0.6108 (2) | 0.16444 (19) | 0.48043 (10) | 0.0382 (4) | |
C9 | 0.4462 (2) | 0.2830 (2) | 0.52864 (11) | 0.0422 (4) | |
C10 | 0.5479 (2) | 0.05584 (19) | 0.64773 (10) | 0.0366 (4) | |
C11 | 0.5896 (2) | −0.1152 (2) | 0.79340 (10) | 0.0411 (4) | |
C12 | 0.6649 (2) | −0.2842 (2) | 0.76226 (12) | 0.0493 (4) | |
H12 | 0.6413 | −0.3092 | 0.7056 | 0.059* | |
C13 | 0.7760 (2) | −0.4161 (2) | 0.81653 (13) | 0.0547 (5) | |
H13 | 0.8279 | −0.5307 | 0.7962 | 0.066* | |
C14 | 0.8108 (2) | −0.3794 (3) | 0.90068 (13) | 0.0580 (5) | |
H14 | 0.8876 | −0.4687 | 0.9362 | 0.070* | |
C15 | 0.7316 (2) | −0.2107 (3) | 0.93184 (13) | 0.0609 (5) | |
H15 | 0.7522 | −0.1864 | 0.9894 | 0.073* | |
C16 | 0.6215 (2) | −0.0769 (2) | 0.87790 (11) | 0.0530 (4) | |
H16 | 0.5696 | 0.0376 | 0.8984 | 0.064* | |
C17 | 0.3210 (2) | 0.1644 (2) | 0.76449 (11) | 0.0430 (4) | |
C18 | 0.2735 (2) | 0.2986 (2) | 0.68624 (10) | 0.0422 (4) | |
H18 | 0.1697 | 0.3053 | 0.6606 | 0.051* | |
C19 | 0.2319 (2) | 0.4798 (2) | 0.71761 (11) | 0.0473 (4) | |
H19A | 0.2548 | 0.5430 | 0.6646 | 0.057* | |
H19B | 0.1068 | 0.5419 | 0.7397 | 0.057* | |
C20 | 0.3383 (2) | 0.4779 (2) | 0.79307 (11) | 0.0424 (4) | |
C21 | 0.3358 (2) | 0.6322 (2) | 0.92299 (12) | 0.0550 (5) | |
H21A | 0.4454 | 0.6372 | 0.9012 | 0.066* | |
H21B | 0.3634 | 0.5308 | 0.9626 | 0.066* | |
C22 | 0.2109 (3) | 0.7929 (3) | 0.97571 (15) | 0.0814 (7) | |
H22A | 0.1900 | 0.8929 | 0.9371 | 0.122* | |
H22B | 0.2614 | 0.8000 | 1.0298 | 0.122* | |
H22C | 0.1007 | 0.7893 | 0.9943 | 0.122* | |
N1 | 0.69428 (17) | −0.05275 (16) | 0.60320 (8) | 0.0381 (3) | |
N2 | 0.42881 (16) | 0.21602 (16) | 0.61779 (8) | 0.0392 (3) | |
N3 | 0.48245 (17) | 0.02592 (16) | 0.73590 (8) | 0.0413 (3) | |
O1 | 0.67400 (14) | 0.19234 (13) | 0.39205 (7) | 0.0442 (3) | |
O2 | 0.33196 (16) | 0.42088 (15) | 0.50277 (8) | 0.0599 (4) | |
O3 | 0.23141 (16) | 0.17923 (16) | 0.83798 (8) | 0.0561 (3) | |
O4 | 0.48112 (15) | 0.36241 (16) | 0.80601 (10) | 0.0646 (4) | |
O5 | 0.25135 (14) | 0.62047 (14) | 0.84498 (8) | 0.0501 (3) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0384 (8) | 0.0302 (8) | 0.0392 (8) | −0.0076 (7) | −0.0086 (6) | −0.0031 (6) |
C2 | 0.0559 (10) | 0.0411 (9) | 0.0391 (9) | −0.0164 (8) | −0.0047 (7) | 0.0019 (7) |
C3 | 0.0470 (10) | 0.0478 (10) | 0.0451 (9) | −0.0156 (8) | 0.0005 (8) | −0.0065 (8) |
C4 | 0.0367 (8) | 0.0387 (9) | 0.0510 (10) | −0.0056 (7) | −0.0073 (7) | −0.0087 (8) |
C5 | 0.0429 (9) | 0.0336 (8) | 0.0421 (9) | −0.0105 (7) | −0.0132 (7) | −0.0004 (7) |
C6 | 0.0400 (8) | 0.0310 (8) | 0.0349 (8) | −0.0122 (7) | −0.0112 (6) | −0.0021 (6) |
C7 | 0.0397 (8) | 0.0298 (8) | 0.0336 (8) | −0.0118 (7) | −0.0115 (6) | −0.0002 (6) |
C8 | 0.0434 (9) | 0.0325 (8) | 0.0328 (8) | −0.0113 (7) | −0.0088 (6) | 0.0006 (6) |
C9 | 0.0455 (9) | 0.0336 (8) | 0.0394 (9) | −0.0096 (7) | −0.0123 (7) | 0.0011 (7) |
C10 | 0.0425 (8) | 0.0290 (8) | 0.0364 (8) | −0.0131 (7) | −0.0097 (6) | −0.0016 (6) |
C11 | 0.0463 (9) | 0.0405 (9) | 0.0369 (8) | −0.0206 (8) | −0.0052 (7) | 0.0044 (7) |
C12 | 0.0645 (11) | 0.0440 (10) | 0.0416 (9) | −0.0260 (9) | −0.0097 (8) | 0.0034 (7) |
C13 | 0.0581 (11) | 0.0401 (10) | 0.0590 (11) | −0.0171 (9) | −0.0069 (9) | 0.0066 (8) |
C14 | 0.0498 (10) | 0.0613 (12) | 0.0549 (11) | −0.0191 (9) | −0.0122 (8) | 0.0176 (9) |
C15 | 0.0632 (12) | 0.0756 (14) | 0.0420 (10) | −0.0287 (11) | −0.0136 (8) | 0.0033 (9) |
C16 | 0.0632 (11) | 0.0542 (11) | 0.0425 (9) | −0.0266 (9) | −0.0082 (8) | −0.0031 (8) |
C17 | 0.0439 (9) | 0.0425 (9) | 0.0425 (9) | −0.0188 (8) | −0.0050 (7) | −0.0072 (7) |
C18 | 0.0379 (8) | 0.0406 (9) | 0.0421 (9) | −0.0119 (7) | −0.0051 (7) | −0.0076 (7) |
C19 | 0.0458 (9) | 0.0385 (9) | 0.0464 (9) | −0.0088 (8) | −0.0058 (7) | −0.0060 (7) |
C20 | 0.0364 (9) | 0.0330 (8) | 0.0502 (9) | −0.0098 (7) | −0.0004 (7) | −0.0049 (7) |
C21 | 0.0577 (11) | 0.0603 (12) | 0.0495 (10) | −0.0277 (10) | −0.0094 (8) | −0.0048 (9) |
C22 | 0.0964 (17) | 0.0683 (14) | 0.0747 (15) | −0.0303 (13) | −0.0108 (12) | −0.0264 (12) |
N1 | 0.0424 (7) | 0.0304 (7) | 0.0353 (7) | −0.0105 (6) | −0.0085 (6) | 0.0006 (5) |
N2 | 0.0403 (7) | 0.0319 (7) | 0.0368 (7) | −0.0083 (6) | −0.0064 (6) | −0.0020 (5) |
N3 | 0.0468 (8) | 0.0347 (7) | 0.0371 (7) | −0.0143 (6) | −0.0036 (6) | −0.0006 (5) |
O1 | 0.0457 (6) | 0.0329 (6) | 0.0374 (6) | −0.0038 (5) | −0.0062 (5) | 0.0032 (5) |
O2 | 0.0555 (7) | 0.0413 (7) | 0.0512 (7) | 0.0054 (6) | −0.0110 (6) | 0.0065 (6) |
O3 | 0.0540 (7) | 0.0614 (8) | 0.0462 (7) | −0.0224 (6) | 0.0045 (6) | −0.0055 (6) |
O4 | 0.0422 (7) | 0.0484 (8) | 0.0882 (10) | −0.0036 (6) | −0.0173 (6) | −0.0173 (7) |
O5 | 0.0492 (7) | 0.0386 (7) | 0.0494 (7) | −0.0065 (5) | −0.0104 (5) | −0.0098 (5) |
C1—C2 | 1.380 (2) | C13—C14 | 1.380 (2) |
C1—O1 | 1.3871 (17) | C13—H13 | 0.9300 |
C1—C6 | 1.393 (2) | C14—C15 | 1.374 (3) |
C2—C3 | 1.384 (2) | C14—H14 | 0.9300 |
C2—H2 | 0.9300 | C15—C16 | 1.383 (2) |
C3—C4 | 1.394 (2) | C15—H15 | 0.9300 |
C3—H3 | 0.9300 | C16—H16 | 0.9300 |
C4—C5 | 1.378 (2) | C17—O3 | 1.2096 (18) |
C4—H4 | 0.9300 | C17—N3 | 1.381 (2) |
C5—C6 | 1.396 (2) | C17—C18 | 1.527 (2) |
C5—H5 | 0.9300 | C18—N2 | 1.4638 (18) |
C6—C7 | 1.439 (2) | C18—C19 | 1.524 (2) |
C7—C8 | 1.368 (2) | C18—H18 | 0.9800 |
C7—N1 | 1.3756 (18) | C19—C20 | 1.502 (2) |
C8—O1 | 1.3811 (18) | C19—H19A | 0.9700 |
C8—C9 | 1.426 (2) | C19—H19B | 0.9700 |
C9—O2 | 1.2183 (18) | C20—O4 | 1.1984 (18) |
C9—N2 | 1.406 (2) | C20—O5 | 1.3303 (18) |
C10—N1 | 1.2863 (19) | C21—O5 | 1.4482 (19) |
C10—N2 | 1.3738 (19) | C21—C22 | 1.488 (2) |
C10—N3 | 1.3910 (19) | C21—H21A | 0.9700 |
C11—C12 | 1.378 (2) | C21—H21B | 0.9700 |
C11—C16 | 1.380 (2) | C22—H22A | 0.9600 |
C11—N3 | 1.438 (2) | C22—H22B | 0.9600 |
C12—C13 | 1.381 (2) | C22—H22C | 0.9600 |
C12—H12 | 0.9300 | ||
C2—C1—O1 | 125.12 (14) | C16—C15—H15 | 119.9 |
C2—C1—C6 | 123.52 (15) | C11—C16—C15 | 119.29 (17) |
O1—C1—C6 | 111.37 (13) | C11—C16—H16 | 120.4 |
C1—C2—C3 | 116.09 (16) | C15—C16—H16 | 120.4 |
C1—C2—H2 | 122.0 | O3—C17—N3 | 127.00 (16) |
C3—C2—H2 | 122.0 | O3—C17—C18 | 125.28 (15) |
C2—C3—C4 | 121.75 (15) | N3—C17—C18 | 107.72 (13) |
C2—C3—H3 | 119.1 | N2—C18—C19 | 115.56 (13) |
C4—C3—H3 | 119.1 | N2—C18—C17 | 101.49 (12) |
C5—C4—C3 | 121.36 (15) | C19—C18—C17 | 113.30 (12) |
C5—C4—H4 | 119.3 | N2—C18—H18 | 108.7 |
C3—C4—H4 | 119.3 | C19—C18—H18 | 108.7 |
C4—C5—C6 | 117.96 (15) | C17—C18—H18 | 108.7 |
C4—C5—H5 | 121.0 | C20—C19—C18 | 113.46 (13) |
C6—C5—H5 | 121.0 | C20—C19—H19A | 108.9 |
C1—C6—C5 | 119.32 (14) | C18—C19—H19A | 108.9 |
C1—C6—C7 | 105.44 (13) | C20—C19—H19B | 108.9 |
C5—C6—C7 | 135.23 (14) | C18—C19—H19B | 108.9 |
C8—C7—N1 | 124.78 (14) | H19A—C19—H19B | 107.7 |
C8—C7—C6 | 106.21 (13) | O4—C20—O5 | 124.28 (15) |
N1—C7—C6 | 129.01 (13) | O4—C20—C19 | 124.77 (14) |
C7—C8—O1 | 112.30 (13) | O5—C20—C19 | 110.94 (13) |
C7—C8—C9 | 123.50 (14) | O5—C21—C22 | 107.98 (15) |
O1—C8—C9 | 124.20 (13) | O5—C21—H21A | 110.1 |
O2—C9—N2 | 121.73 (15) | C22—C21—H21A | 110.1 |
O2—C9—C8 | 129.66 (16) | O5—C21—H21B | 110.1 |
N2—C9—C8 | 108.61 (13) | C22—C21—H21B | 110.1 |
N1—C10—N2 | 127.32 (14) | H21A—C21—H21B | 108.4 |
N1—C10—N3 | 124.27 (14) | C21—C22—H22A | 109.5 |
N2—C10—N3 | 108.40 (13) | C21—C22—H22B | 109.5 |
C12—C11—C16 | 121.05 (16) | H22A—C22—H22B | 109.5 |
C12—C11—N3 | 120.22 (13) | C21—C22—H22C | 109.5 |
C16—C11—N3 | 118.67 (15) | H22A—C22—H22C | 109.5 |
C11—C12—C13 | 118.91 (15) | H22B—C22—H22C | 109.5 |
C11—C12—H12 | 120.5 | C10—N1—C7 | 111.84 (13) |
C13—C12—H12 | 120.5 | C10—N2—C9 | 123.79 (13) |
C14—C13—C12 | 120.62 (17) | C10—N2—C18 | 111.50 (12) |
C14—C13—H13 | 119.7 | C9—N2—C18 | 124.39 (13) |
C12—C13—H13 | 119.7 | C17—N3—C10 | 110.86 (13) |
C15—C14—C13 | 119.84 (17) | C17—N3—C11 | 125.99 (13) |
C15—C14—H14 | 120.1 | C10—N3—C11 | 122.06 (13) |
C13—C14—H14 | 120.1 | C8—O1—C1 | 104.69 (11) |
C14—C15—C16 | 120.26 (17) | C20—O5—C21 | 116.76 (13) |
C14—C15—H15 | 119.9 | ||
O1—C1—C2—C3 | 179.50 (14) | C18—C19—C20—O4 | 26.2 (2) |
C6—C1—C2—C3 | −0.4 (2) | C18—C19—C20—O5 | −152.67 (14) |
C1—C2—C3—C4 | 0.1 (2) | N2—C10—N1—C7 | 0.0 (2) |
C2—C3—C4—C5 | 0.1 (3) | N3—C10—N1—C7 | 178.67 (13) |
C3—C4—C5—C6 | −0.2 (2) | C8—C7—N1—C10 | −2.0 (2) |
C2—C1—C6—C5 | 0.4 (2) | C6—C7—N1—C10 | 178.43 (14) |
O1—C1—C6—C5 | −179.53 (13) | N1—C10—N2—C9 | 3.6 (2) |
C2—C1—C6—C7 | 179.39 (14) | N3—C10—N2—C9 | −175.22 (13) |
O1—C1—C6—C7 | −0.51 (16) | N1—C10—N2—C18 | 177.39 (14) |
C4—C5—C6—C1 | −0.1 (2) | N3—C10—N2—C18 | −1.42 (16) |
C4—C5—C6—C7 | −178.74 (15) | O2—C9—N2—C10 | 175.24 (15) |
C1—C6—C7—C8 | 0.13 (16) | C8—C9—N2—C10 | −4.5 (2) |
C5—C6—C7—C8 | 178.92 (17) | O2—C9—N2—C18 | 2.2 (2) |
C1—C6—C7—N1 | 179.78 (14) | C8—C9—N2—C18 | −177.54 (13) |
C5—C6—C7—N1 | −1.4 (3) | C19—C18—N2—C10 | 124.87 (14) |
N1—C7—C8—O1 | −179.38 (12) | C17—C18—N2—C10 | 1.87 (15) |
C6—C7—C8—O1 | 0.29 (17) | C19—C18—N2—C9 | −61.38 (19) |
N1—C7—C8—C9 | 0.5 (2) | C17—C18—N2—C9 | 175.62 (13) |
C6—C7—C8—C9 | −179.86 (14) | O3—C17—N3—C10 | −178.92 (15) |
C7—C8—C9—O2 | −177.07 (16) | C18—C17—N3—C10 | 0.95 (16) |
O1—C8—C9—O2 | 2.8 (3) | O3—C17—N3—C11 | −10.7 (3) |
C7—C8—C9—N2 | 2.7 (2) | C18—C17—N3—C11 | 169.13 (13) |
O1—C8—C9—N2 | −177.49 (13) | N1—C10—N3—C17 | −178.61 (14) |
C16—C11—C12—C13 | −1.0 (3) | N2—C10—N3—C17 | 0.25 (17) |
N3—C11—C12—C13 | 176.04 (15) | N1—C10—N3—C11 | 12.7 (2) |
C11—C12—C13—C14 | 0.2 (3) | N2—C10—N3—C11 | −168.47 (13) |
C12—C13—C14—C15 | 1.3 (3) | C12—C11—N3—C17 | 134.92 (17) |
C13—C14—C15—C16 | −2.0 (3) | C16—C11—N3—C17 | −48.0 (2) |
C12—C11—C16—C15 | 0.3 (3) | C12—C11—N3—C10 | −58.1 (2) |
N3—C11—C16—C15 | −176.76 (15) | C16—C11—N3—C10 | 118.95 (17) |
C14—C15—C16—C11 | 1.2 (3) | C7—C8—O1—C1 | −0.59 (16) |
O3—C17—C18—N2 | 178.21 (15) | C9—C8—O1—C1 | 179.56 (14) |
N3—C17—C18—N2 | −1.66 (15) | C2—C1—O1—C8 | −179.22 (14) |
O3—C17—C18—C19 | 53.7 (2) | C6—C1—O1—C8 | 0.68 (16) |
N3—C17—C18—C19 | −126.20 (14) | O4—C20—O5—C21 | −1.4 (2) |
N2—C18—C19—C20 | −83.04 (17) | C19—C20—O5—C21 | 177.50 (14) |
C17—C18—C19—C20 | 33.47 (19) | C22—C21—O5—C20 | −175.36 (16) |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2···O5i | 0.93 | 2.56 | 3.442 (2) | 159 |
C3—H3···O4ii | 0.93 | 2.58 | 3.305 (2) | 135 |
C5—H5···O2iii | 0.93 | 2.46 | 3.132 (2) | 129 |
C15—H15···O3iv | 0.93 | 2.53 | 3.434 (2) | 163 |
C19—H19A···O2 | 0.97 | 2.52 | 3.137 (2) | 122 |
Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) −x+2, −y, −z+1; (iii) x+1, y−1, z; (iv) −x+1, −y, −z+2. |
Experimental details
Crystal data | |
Chemical formula | C22H17N3O5 |
Mr | 403.39 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 292 |
a, b, c (Å) | 8.5418 (12), 8.6553 (12), 14.519 (2) |
α, β, γ (°) | 86.642 (2), 82.873 (2), 62.619 (2) |
V (Å3) | 945.8 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.30 × 0.20 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART 4K CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2003) |
Tmin, Tmax | 0.970, 0.990 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5574, 3663, 2844 |
Rint | 0.084 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.045, 0.129, 1.06 |
No. of reflections | 3663 |
No. of parameters | 272 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.25, −0.35 |
Computer programs: SMART (Bruker, 2001), SAINT-Plus (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2···O5i | 0.93 | 2.56 | 3.442 (2) | 158.8 |
C3—H3···O4ii | 0.93 | 2.58 | 3.305 (2) | 135.4 |
C5—H5···O2iii | 0.93 | 2.46 | 3.132 (2) | 129.0 |
C15—H15···O3iv | 0.93 | 2.53 | 3.434 (2) | 163.1 |
C19—H19A···O2 | 0.97 | 2.52 | 3.137 (2) | 121.7 |
Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) −x+2, −y, −z+1; (iii) x+1, y−1, z; (iv) −x+1, −y, −z+2. |
Acknowledgements
The authors are grateful to Dr Y. G. Hu (Institute of Medicinal Chemistry, Hubei Medical University, Shiyan, China) and Dr X. G. Meng (Key Laboratory of Pesticides & Chemical Biology of the Ministry of Education, Central China Normal University, Wuhan, Hubei, China) for the synthesis, data collection and analysis. This work were supported by the Education Commission of Hubei Province of China (grant No. B200624004), Shiyan Municipal Science and Technology Bureau (grant No. 20061835) and Yunyang Medical College (grant No. 2008QDJ1).
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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.
The derivatives of benzofuropyrimidine are of great importance because of their remarkable biological properties. Some of them have shown good analgesic, anti-inflammatory and antimicrobial activities (Moneam et al., 2004 and Bodke et al., 2003). On the other hand, heterocycles containing an imidazolone nucleus also exhibit various biological activities. Several of them have shown good antibacterial, antifungal activities or are used as leukotriene B4 receptor antagonist and potassium channel openers (Palacios et al., 2007 and Duval et al., 2005, Teimouria et al., 2006). The introduction of an imidazolone ring to the benzofuro[3,2-d]pyrimidin-4(3H)-one system is expected to influence the biological activities significantly. As a part of our ongoing investigations on the preparation of derivatives of heterocyclic compounds (Hu et al., 2005, 2006, 2007, 2008), we have synthesized and structurally characterized the title compound, and here we report its crystal structure (Fig. 1).
In the crystal structure of the title compound, all ring atoms of imidazo[1,2-a]benzo[4,5]furo [2,3-d]pyrimidine system are essentially coplanar, with maximum deviations -0.039 (3)Å and 0.057 (1)Å for O3 and N2, respectively. The phenyl (C11—C16) ring is twisted with respect to it, making dihedral angles of 54.23 (4)°. The structure is mainly stabilized by weak C—H···O interactions.