organic compounds
2,6]dec-8-ene-3,5-dione
of 1,7,8,9-tetrachloro-4-(2-fluorobenzyl)-10,10-dimethoxy-4-azatricyclo[5.2.1.0aShanghai Institute of Pharmaceutical Industry, Shanghai 200040, People's Republic of China, and bBeijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
*Correspondence e-mail: liuheliuhe@126.com
In the title compound, C17H12Cl4FNO4, the configuration of the cycloalkene skeleton is endo,cis. The benzene ring is twisted by 71.01 (11)° from the attached pyrrolidine ring. In the crystal, one of the methine groups of the fused-ring system forms a weak C—H⋯O hydrogen bond. The other methine groups participates in a C—H⋯F interaction to the same adjacent molecule. Together, these generate [010] chains.
Keywords: crystal structure; biochemical activity; tricyclo[5,2,1,02,6]dec-8-ene-3,5-dione; hydrogen bonding; C—H⋯F interaction.
CCDC reference: 1036764
1. Related literature
For similar structures, see: Shan et al. (2012); Kossakowski et al. (2009). For the biochemical activity of related compounds, see: Kossakowski et al. (2006, 2008); Struga et al. (2007).
2. Experimental
2.1. Crystal data
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2.2. Data collection
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
CCDC reference: 1036764
https://doi.org/10.1107/S2056989014026279/hb7331sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989014026279/hb7331Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S2056989014026279/hb7331Isup3.cml
The synthetic pathway for the title compound is described as follows. N-(2'fluorobenzyl)maleimide (1.9 g, 10 mmol) and 5,5- dimethoxy- 1,2,3,4-tetrachlorocydopentadiene (2.63 g, 10 mmol) were dissolved in anhydrous toluene (100 mL). Then the solution was refluxed for 8 h. After the solvent was removed under reduced pressure, the residue was dissolved in ether (150 mL), washed with water and brine, dried over anhydrous sodium sulfate, and concentrated to dryness. The product was purified by flash-chromatography (petroleum ether/ethyl acetate, 6:1) and the title compound was isolated as a white solid (3.86 g, 85%). m.p.: 116–118°C.
The crystals appropriate for X-ray data collection were obtained from ethyl acetate solution at room temperature after two days.
All H atoms were placed in geometically idealized positions and constrained to ride on their parent atoms with C—H distances of 0.93 Å (0.98 for alicylic CH) for aromatic ring CH, and Uiso(H) = 1.2(1.5 for CH3)Ueq(C).
The title compound, (I)(Fig.1), 1,7,8,9-tetrachloro-4-(2'-fluorobenzyl) -10,10-dimethoxy-4-azatricyclo(5,2,1,02,6)dec-8-ene-3,5-dione was synthesized from N-(2'-fluorobenzyl)maleimide and 5,5-dimethoxy- 1,2,3,4-tetrachlorocydopentadiene.
The fused pyrrolidine ring systems, are frequently encountered structural units in many synthetically challenging and biologically active
The interest of constructing skeletons of this type was further enlightened by the recent disclosure of Kossakowski et al., (2006) that the rigid arylcyclo analogues having azatricyclo ring systems show anti-HIV-1, anti-cancer, antiviral, and antibacterial activities. We have synthesized a serial compounds with this cycloalkene skeleton. This report is one of them.In the
there is a tricyclic fused pyrrolidine ring system. The configuration of the cycloalkene skeleton is endo, cis. The dihedral angle of pyrrolidine ring and benzene ring is 71.01 (11)°.The molecules packed in spacegroup P212121, and the
of the title compound can be determined from x=-0.02 (7), and the compound has at C1S, C2S, C6R, C7R.Weak intermolecular C—H···X(X=O,F) hydrogen bonds can be found between adjacent molecules. In details(Table 1), C2—H2A and C6—H6A of the same molecule(1 - x, 1/2 + y, 1/2 - z) provide H-bonds donors to O2, F1, respectively. These pairs of H-bonds link the neighbour molecules along baxis to form infinite chains. Another two molecules in the
along baxis linked by the same weak H-bonds in the opposite direction. So the whole crystal packing exists as countless helices along baxis.For similar structures, see: Shan et al. (2012); Kossakowski et al. (2009). For the biochemical activity of related compounds, see: Kossakowski et al. (2006, 2008); Struga et al. (2007).
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C17H12Cl4FNO4 | F(000) = 920 |
Mr = 455.08 | Dx = 1.632 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 4520 reflections |
a = 9.965 (2) Å | θ = 3.0–27.5° |
b = 10.982 (2) Å | µ = 0.67 mm−1 |
c = 16.926 (3) Å | T = 296 K |
V = 1852.1 (6) Å3 | Prismatic, colorless |
Z = 4 | 0.20 × 0.15 × 0.10 mm |
Bruker APEXII CCD diffractometer | 3231 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.069 |
Graphite monochromator | θmax = 27.5°, θmin = 3.0° |
φ and ω scans | h = −12→12 |
17912 measured reflections | k = −14→14 |
4238 independent reflections | l = −21→21 |
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)] = 0.046 | H-atom parameters constrained |
wR(F2) = 0.101 | w = 1/[σ2(Fo2) + (0.050P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.00 | (Δ/σ)max < 0.001 |
4238 reflections | Δρmax = 0.28 e Å−3 |
244 parameters | Δρmin = −0.27 e Å−3 |
0 restraints | Absolute structure: Flack (1983), 1826 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: −0.02 (7) |
C17H12Cl4FNO4 | V = 1852.1 (6) Å3 |
Mr = 455.08 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 9.965 (2) Å | µ = 0.67 mm−1 |
b = 10.982 (2) Å | T = 296 K |
c = 16.926 (3) Å | 0.20 × 0.15 × 0.10 mm |
Bruker APEXII CCD diffractometer | 3231 reflections with I > 2σ(I) |
17912 measured reflections | Rint = 0.069 |
4238 independent reflections |
R[F2 > 2σ(F2)] = 0.046 | H-atom parameters constrained |
wR(F2) = 0.101 | Δρmax = 0.28 e Å−3 |
S = 1.00 | Δρmin = −0.27 e Å−3 |
4238 reflections | Absolute structure: Flack (1983), 1826 Friedel pairs |
244 parameters | Absolute structure parameter: −0.02 (7) |
0 restraints |
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 | ||
Cl1 | 0.09057 (8) | 0.72603 (7) | 0.11428 (5) | 0.0470 (2) | |
Cl2 | 0.31474 (10) | 0.49911 (9) | 0.37871 (5) | 0.0614 (3) | |
Cl3 | 0.28576 (9) | 0.30235 (7) | 0.23337 (6) | 0.0541 (2) | |
Cl4 | 0.16447 (10) | 0.44681 (8) | 0.07087 (5) | 0.0549 (3) | |
F1 | 0.5234 (2) | 0.33581 (19) | 0.09916 (14) | 0.0675 (6) | |
O1 | 0.4175 (2) | 0.6801 (2) | 0.03909 (14) | 0.0582 (7) | |
O2 | 0.5994 (2) | 0.4890 (2) | 0.25327 (14) | 0.0578 (6) | |
O3 | 0.1973 (2) | 0.74679 (18) | 0.30831 (13) | 0.0420 (5) | |
O4 | 0.0408 (2) | 0.59723 (19) | 0.27636 (13) | 0.0416 (5) | |
N4 | 0.5329 (2) | 0.5781 (2) | 0.13621 (15) | 0.0354 (6) | |
C1 | 0.2012 (3) | 0.6451 (2) | 0.17531 (17) | 0.0305 (6) | |
C2 | 0.3479 (3) | 0.6939 (3) | 0.17719 (17) | 0.0328 (6) | |
H2A | 0.3501 | 0.7825 | 0.1839 | 0.039* | |
C3 | 0.4315 (3) | 0.6544 (3) | 0.1073 (2) | 0.0380 (7) | |
C5 | 0.5247 (3) | 0.5554 (3) | 0.21679 (19) | 0.0394 (7) | |
C6 | 0.4076 (3) | 0.6283 (3) | 0.24928 (18) | 0.0354 (7) | |
H6A | 0.4383 | 0.6870 | 0.2889 | 0.042* | |
C7 | 0.2890 (3) | 0.5511 (3) | 0.28159 (17) | 0.0365 (7) | |
C8 | 0.2570 (3) | 0.4540 (3) | 0.22159 (18) | 0.0347 (7) | |
C9 | 0.2065 (3) | 0.5094 (3) | 0.15910 (17) | 0.0335 (6) | |
C10 | 0.1705 (3) | 0.6410 (3) | 0.26658 (18) | 0.0344 (7) | |
C11 | 0.6311 (3) | 0.5241 (3) | 0.08502 (18) | 0.0357 (7) | |
C12 | 0.6251 (3) | 0.4016 (3) | 0.06730 (19) | 0.0400 (7) | |
C13 | 0.7166 (4) | 0.3465 (3) | 0.0191 (2) | 0.0529 (9) | |
H13A | 0.7117 | 0.2634 | 0.0090 | 0.063* | |
C14 | 0.8162 (4) | 0.4165 (3) | −0.0142 (2) | 0.0517 (9) | |
H14A | 0.8782 | 0.3810 | −0.0481 | 0.062* | |
C15 | 0.8242 (3) | 0.5388 (3) | 0.0026 (2) | 0.0511 (9) | |
H15A | 0.8925 | 0.5855 | −0.0195 | 0.061* | |
C16 | 0.7320 (3) | 0.5925 (3) | 0.0517 (2) | 0.0458 (8) | |
H16A | 0.7378 | 0.6753 | 0.0626 | 0.055* | |
C17 | 0.1104 (3) | 0.8490 (3) | 0.2942 (2) | 0.0523 (9) | |
H17A | 0.1389 | 0.9166 | 0.3260 | 0.078* | |
H17B | 0.0199 | 0.8275 | 0.3078 | 0.078* | |
H17C | 0.1144 | 0.8712 | 0.2394 | 0.078* | |
C18 | −0.0074 (4) | 0.5857 (4) | 0.3562 (2) | 0.0682 (12) | |
H18A | −0.0975 | 0.5547 | 0.3556 | 0.102* | |
H18B | −0.0063 | 0.6640 | 0.3814 | 0.102* | |
H18C | 0.0493 | 0.5306 | 0.3848 | 0.102* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0449 (4) | 0.0488 (4) | 0.0472 (5) | 0.0125 (4) | −0.0076 (4) | 0.0056 (4) |
Cl2 | 0.0770 (6) | 0.0779 (6) | 0.0295 (4) | 0.0107 (5) | −0.0045 (4) | 0.0089 (4) |
Cl3 | 0.0587 (5) | 0.0322 (4) | 0.0714 (6) | 0.0060 (4) | 0.0034 (5) | 0.0080 (4) |
Cl4 | 0.0725 (6) | 0.0539 (5) | 0.0382 (5) | 0.0019 (4) | −0.0065 (4) | −0.0174 (4) |
F1 | 0.0668 (13) | 0.0489 (11) | 0.0869 (17) | −0.0211 (11) | 0.0124 (13) | −0.0032 (11) |
O1 | 0.0571 (15) | 0.0707 (17) | 0.0467 (15) | 0.0238 (14) | 0.0139 (13) | 0.0245 (13) |
O2 | 0.0512 (13) | 0.0732 (16) | 0.0489 (14) | 0.0201 (14) | −0.0076 (12) | 0.0059 (13) |
O3 | 0.0397 (12) | 0.0425 (12) | 0.0438 (12) | 0.0047 (10) | 0.0007 (10) | −0.0187 (10) |
O4 | 0.0354 (12) | 0.0516 (13) | 0.0380 (13) | −0.0048 (10) | 0.0104 (9) | −0.0076 (10) |
N4 | 0.0318 (13) | 0.0332 (13) | 0.0410 (16) | 0.0069 (11) | 0.0050 (11) | 0.0015 (12) |
C1 | 0.0289 (15) | 0.0310 (14) | 0.0315 (15) | 0.0016 (12) | −0.0015 (13) | −0.0001 (12) |
C2 | 0.0293 (14) | 0.0277 (14) | 0.0413 (17) | 0.0005 (12) | 0.0025 (13) | −0.0005 (13) |
C3 | 0.0356 (16) | 0.0309 (15) | 0.048 (2) | 0.0011 (13) | 0.0073 (15) | 0.0087 (14) |
C5 | 0.0314 (16) | 0.0379 (16) | 0.049 (2) | 0.0036 (14) | −0.0049 (15) | −0.0054 (15) |
C6 | 0.0324 (15) | 0.0363 (15) | 0.0374 (17) | 0.0006 (13) | −0.0038 (14) | −0.0072 (14) |
C7 | 0.0409 (16) | 0.0403 (15) | 0.0282 (16) | 0.0041 (14) | −0.0019 (14) | 0.0023 (13) |
C8 | 0.0369 (16) | 0.0315 (14) | 0.0356 (16) | 0.0003 (13) | 0.0015 (14) | 0.0023 (13) |
C9 | 0.0369 (15) | 0.0328 (14) | 0.0308 (15) | 0.0001 (14) | 0.0031 (12) | −0.0060 (13) |
C10 | 0.0360 (16) | 0.0357 (15) | 0.0316 (16) | 0.0008 (13) | −0.0004 (13) | −0.0054 (12) |
C11 | 0.0343 (15) | 0.0340 (15) | 0.0389 (16) | 0.0052 (13) | 0.0005 (13) | 0.0005 (13) |
C12 | 0.0393 (18) | 0.0385 (17) | 0.0422 (19) | −0.0049 (14) | 0.0008 (14) | 0.0015 (14) |
C13 | 0.062 (2) | 0.0429 (18) | 0.054 (2) | 0.0043 (18) | −0.0030 (19) | −0.0170 (17) |
C14 | 0.052 (2) | 0.063 (2) | 0.0401 (19) | 0.0176 (18) | 0.0028 (17) | −0.0024 (17) |
C15 | 0.0406 (19) | 0.055 (2) | 0.057 (2) | 0.0036 (17) | 0.0133 (18) | 0.0102 (18) |
C16 | 0.0453 (19) | 0.0336 (16) | 0.058 (2) | −0.0006 (15) | 0.0057 (17) | 0.0055 (16) |
C17 | 0.047 (2) | 0.0437 (18) | 0.066 (2) | 0.0124 (16) | −0.0026 (18) | −0.0189 (17) |
C18 | 0.064 (3) | 0.086 (3) | 0.054 (2) | −0.009 (2) | 0.030 (2) | −0.004 (2) |
Cl1—C1 | 1.753 (3) | C6—C7 | 1.554 (4) |
Cl2—C7 | 1.759 (3) | C6—H6A | 0.9800 |
Cl3—C8 | 1.702 (3) | C7—C8 | 1.506 (4) |
Cl4—C9 | 1.696 (3) | C7—C10 | 1.560 (4) |
F1—C12 | 1.356 (4) | C8—C9 | 1.320 (4) |
O1—C3 | 1.197 (4) | C11—C16 | 1.376 (4) |
O2—C5 | 1.211 (4) | C11—C12 | 1.380 (4) |
O3—C10 | 1.385 (3) | C12—C13 | 1.365 (5) |
O3—C17 | 1.438 (4) | C13—C14 | 1.376 (5) |
O4—C10 | 1.389 (3) | C13—H13A | 0.9300 |
O4—C18 | 1.440 (4) | C14—C15 | 1.375 (5) |
N4—C5 | 1.389 (4) | C14—H14A | 0.9300 |
N4—C3 | 1.401 (4) | C15—C16 | 1.372 (5) |
N4—C11 | 1.435 (4) | C15—H15A | 0.9300 |
C1—C9 | 1.516 (4) | C16—H16A | 0.9300 |
C1—C2 | 1.557 (4) | C17—H17A | 0.9600 |
C1—C10 | 1.576 (4) | C17—H17B | 0.9600 |
C2—C3 | 1.511 (4) | C17—H17C | 0.9600 |
C2—C6 | 1.537 (4) | C18—H18A | 0.9600 |
C2—H2A | 0.9800 | C18—H18B | 0.9600 |
C5—C6 | 1.518 (4) | C18—H18C | 0.9600 |
C10—O3—C17 | 117.0 (2) | C8—C9—Cl4 | 127.8 (2) |
C10—O4—C18 | 116.9 (3) | C1—C9—Cl4 | 123.3 (2) |
C5—N4—C3 | 114.1 (3) | O3—C10—O4 | 114.1 (2) |
C5—N4—C11 | 124.0 (2) | O3—C10—C7 | 107.6 (2) |
C3—N4—C11 | 121.9 (3) | O4—C10—C7 | 117.7 (2) |
C9—C1—C2 | 108.0 (2) | O3—C10—C1 | 116.0 (2) |
C9—C1—C10 | 99.0 (2) | O4—C10—C1 | 107.9 (2) |
C2—C1—C10 | 99.9 (2) | C7—C10—C1 | 91.8 (2) |
C9—C1—Cl1 | 114.4 (2) | C16—C11—C12 | 118.4 (3) |
C2—C1—Cl1 | 115.35 (19) | C16—C11—N4 | 121.3 (3) |
C10—C1—Cl1 | 118.0 (2) | C12—C11—N4 | 120.3 (3) |
C3—C2—C6 | 105.9 (2) | F1—C12—C13 | 120.0 (3) |
C3—C2—C1 | 113.7 (2) | F1—C12—C11 | 117.7 (3) |
C6—C2—C1 | 102.6 (2) | C13—C12—C11 | 122.2 (3) |
C3—C2—H2A | 111.4 | C12—C13—C14 | 118.6 (3) |
C6—C2—H2A | 111.4 | C12—C13—H13A | 120.7 |
C1—C2—H2A | 111.4 | C14—C13—H13A | 120.7 |
O1—C3—N4 | 124.2 (3) | C15—C14—C13 | 120.2 (3) |
O1—C3—C2 | 128.5 (3) | C15—C14—H14A | 119.9 |
N4—C3—C2 | 107.2 (3) | C13—C14—H14A | 119.9 |
O2—C5—N4 | 124.9 (3) | C16—C15—C14 | 120.3 (3) |
O2—C5—C6 | 127.2 (3) | C16—C15—H15A | 119.8 |
N4—C5—C6 | 107.8 (2) | C14—C15—H15A | 119.8 |
C5—C6—C2 | 104.9 (2) | C15—C16—C11 | 120.2 (3) |
C5—C6—C7 | 115.1 (2) | C15—C16—H16A | 119.9 |
C2—C6—C7 | 104.0 (2) | C11—C16—H16A | 119.9 |
C5—C6—H6A | 110.8 | O3—C17—H17A | 109.5 |
C2—C6—H6A | 110.8 | O3—C17—H17B | 109.5 |
C7—C6—H6A | 110.8 | H17A—C17—H17B | 109.5 |
C8—C7—C6 | 108.0 (2) | O3—C17—H17C | 109.5 |
C8—C7—C10 | 100.3 (2) | H17A—C17—H17C | 109.5 |
C6—C7—C10 | 99.9 (2) | H17B—C17—H17C | 109.5 |
C8—C7—Cl2 | 115.6 (2) | O4—C18—H18A | 109.5 |
C6—C7—Cl2 | 113.3 (2) | O4—C18—H18B | 109.5 |
C10—C7—Cl2 | 117.9 (2) | H18A—C18—H18B | 109.5 |
C9—C8—C7 | 107.1 (2) | O4—C18—H18C | 109.5 |
C9—C8—Cl3 | 127.5 (2) | H18A—C18—H18C | 109.5 |
C7—C8—Cl3 | 125.3 (2) | H18B—C18—H18C | 109.5 |
C8—C9—C1 | 108.7 (3) | ||
C9—C1—C2—C3 | 49.3 (3) | Cl1—C1—C9—C8 | −160.5 (2) |
C10—C1—C2—C3 | 152.2 (2) | C2—C1—C9—Cl4 | −106.0 (3) |
Cl1—C1—C2—C3 | −80.2 (3) | C10—C1—C9—Cl4 | 150.4 (2) |
C9—C1—C2—C6 | −64.6 (3) | Cl1—C1—C9—Cl4 | 24.0 (3) |
C10—C1—C2—C6 | 38.3 (2) | C17—O3—C10—O4 | −55.9 (4) |
Cl1—C1—C2—C6 | 165.98 (19) | C17—O3—C10—C7 | 171.5 (3) |
C5—N4—C3—O1 | −176.4 (3) | C17—O3—C10—C1 | 70.5 (3) |
C11—N4—C3—O1 | 0.4 (5) | C18—O4—C10—O3 | −49.8 (4) |
C5—N4—C3—C2 | 3.3 (3) | C18—O4—C10—C7 | 77.8 (4) |
C11—N4—C3—C2 | −179.9 (3) | C18—O4—C10—C1 | 179.7 (3) |
C6—C2—C3—O1 | 177.2 (3) | C8—C7—C10—O3 | −170.1 (2) |
C1—C2—C3—O1 | 65.3 (4) | C6—C7—C10—O3 | −59.5 (3) |
C6—C2—C3—N4 | −2.4 (3) | Cl2—C7—C10—O3 | 63.6 (3) |
C1—C2—C3—N4 | −114.3 (3) | C8—C7—C10—O4 | 59.3 (3) |
C3—N4—C5—O2 | 177.5 (3) | C6—C7—C10—O4 | 169.9 (2) |
C11—N4—C5—O2 | 0.8 (5) | Cl2—C7—C10—O4 | −67.0 (3) |
C3—N4—C5—C6 | −2.7 (3) | C8—C7—C10—C1 | −52.0 (2) |
C11—N4—C5—C6 | −179.4 (3) | C6—C7—C10—C1 | 58.5 (2) |
O2—C5—C6—C2 | −179.2 (3) | Cl2—C7—C10—C1 | −178.3 (2) |
N4—C5—C6—C2 | 0.9 (3) | C9—C1—C10—O3 | 161.4 (2) |
O2—C5—C6—C7 | −65.6 (4) | C2—C1—C10—O3 | 51.1 (3) |
N4—C5—C6—C7 | 114.5 (3) | Cl1—C1—C10—O3 | −74.7 (3) |
C3—C2—C6—C5 | 0.9 (3) | C9—C1—C10—O4 | −69.1 (3) |
C1—C2—C6—C5 | 120.4 (2) | C2—C1—C10—O4 | −179.4 (2) |
C3—C2—C6—C7 | −120.4 (3) | Cl1—C1—C10—O4 | 54.8 (3) |
C1—C2—C6—C7 | −0.9 (3) | C9—C1—C10—C7 | 50.8 (2) |
C5—C6—C7—C8 | −47.1 (3) | C2—C1—C10—C7 | −59.4 (2) |
C2—C6—C7—C8 | 67.1 (3) | Cl1—C1—C10—C7 | 174.7 (2) |
C5—C6—C7—C10 | −151.4 (2) | C5—N4—C11—C16 | −110.9 (4) |
C2—C6—C7—C10 | −37.3 (3) | C3—N4—C11—C16 | 72.6 (4) |
C5—C6—C7—Cl2 | 82.2 (3) | C5—N4—C11—C12 | 69.9 (4) |
C2—C6—C7—Cl2 | −163.61 (19) | C3—N4—C11—C12 | −106.6 (3) |
C6—C7—C8—C9 | −68.4 (3) | C16—C11—C12—F1 | −178.6 (3) |
C10—C7—C8—C9 | 35.7 (3) | N4—C11—C12—F1 | 0.6 (5) |
Cl2—C7—C8—C9 | 163.6 (2) | C16—C11—C12—C13 | 1.0 (5) |
C6—C7—C8—Cl3 | 110.2 (3) | N4—C11—C12—C13 | −179.8 (3) |
C10—C7—C8—Cl3 | −145.7 (2) | F1—C12—C13—C14 | 178.1 (3) |
Cl2—C7—C8—Cl3 | −17.8 (3) | C11—C12—C13—C14 | −1.5 (5) |
C7—C8—C9—C1 | −0.7 (3) | C12—C13—C14—C15 | 1.4 (6) |
Cl3—C8—C9—C1 | −179.2 (2) | C13—C14—C15—C16 | −0.9 (6) |
C7—C8—C9—Cl4 | 174.6 (2) | C14—C15—C16—C11 | 0.3 (5) |
Cl3—C8—C9—Cl4 | −4.0 (4) | C12—C11—C16—C15 | −0.4 (5) |
C2—C1—C9—C8 | 69.5 (3) | N4—C11—C16—C15 | −179.6 (3) |
C10—C1—C9—C8 | −34.1 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2A···O2i | 0.98 | 2.55 | 3.487 (4) | 159 |
C6—H6A···F1i | 0.98 | 2.53 | 3.500 (4) | 170 |
Symmetry code: (i) −x+1, y+1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2A···O2i | 0.98 | 2.55 | 3.487 (4) | 159 |
C6—H6A···F1i | 0.98 | 2.53 | 3.500 (4) | 170 |
Symmetry code: (i) −x+1, y+1/2, −z+1/2. |
Acknowledgements
We gratefully acknowledge financial support from the National Natural Science Foundation of China (No.81072530).
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The title compound, (I)(Fig.1), 1,7,8,9-tetrachloro-4-(2'-fluorobenzyl) -10,10-dimethoxy-4-azatricyclo(5,2,1,02,6)dec-8-ene-3,5-dione was synthesized from N-(2'-fluorobenzyl)maleimide and 5,5-dimethoxy- 1,2,3,4-tetrachlorocydopentadiene.
The fused pyrrolidine ring systems, are frequently encountered structural units in many synthetically challenging and biologically active alkaloids. The interest of constructing skeletons of this type was further enlightened by the recent disclosure of Kossakowski et al., (2006) that the rigid arylcyclo analogues having azatricyclo ring systems show anti-HIV-1, anti-cancer, antiviral, and antibacterial activities. We have synthesized a serial compounds with this cycloalkene skeleton. This report is one of them.
In the crystal structure, there is a tricyclic fused pyrrolidine ring system. The configuration of the cycloalkene skeleton is endo, cis. The dihedral angle of pyrrolidine ring and benzene ring is 71.01 (11)°.
The molecules packed in spacegroup P212121, and the absolute configuration of the title compound can be determined from Flack parameter x=-0.02 (7), and the compound has chirality at C1S, C2S, C6R, C7R.
Weak intermolecular C—H···X(X=O,F) hydrogen bonds can be found between adjacent molecules. In details(Table 1), C2—H2A and C6—H6A of the same molecule(1 - x, 1/2 + y, 1/2 - z) provide H-bonds donors to O2, F1, respectively. These pairs of H-bonds link the neighbour molecules along baxis to form infinite chains. Another two molecules in the unit cell along baxis linked by the same weak H-bonds in the opposite direction. So the whole crystal packing exists as countless helices along baxis.