organic compounds
3-Bromopropyl 2-(2-chlorophenyl)-2-(4,5,6,7-tetrahydrothieno[3,2-c]pyridin-5-yl)acetate
aMaterials Science and Engineering, Tianjin Polytechnic University, Tianjin 300160, People's Republic of China, and bTianjin Institute of Pharmaceutical Research, Tianjin 300193, People's Republic of China
*Correspondence e-mail: liudk@tjipr.com
In the 18H19BrClNO2S, weak C—H⋯O interactions help to establish the packing.
of the title compound, CRelated literature
The title compound is a derivative of the antiplatelet agent clopidogrel [systematic name (+)-(S)-methyl 2-(2-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetate]. For background to the bioactivity and applications of clopidogrel, see: Muller et al. (2003); Savi et al. (1994); Sharis et al. (1998). For the synthesis of other derivatives with thienopyridine, see: Aubert et al. (1985); Bouisset & Radisson (1991); Savi et al. (1992); Bipin et al. (2002); Eric & Hiralal (1989); Liu et al. (2008); Silva (2004).
Experimental
Crystal data
|
Data collection
|
Refinement
|
Data collection: CrystalClear (Rigaku/MSC, 2005); cell CrystalClear; data reduction: CrystalClear; 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: CrystalStructure (Rigaku/MSC, 2005).
Supporting information
https://doi.org/10.1107/S1600536810053134/rk2241sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810053134/rk2241Isup2.hkl
The title compound was prepared according to the literature (Aubert et al., 1985). A mixture of α–bromo(2–chloro)phenyl acetic acid (5 g, 20 mmol), 3–bromo–1–propanol (20 g, 144 mmol) and p–toluenesulfonic acid (1.0 g, 5.8 mmol) in toluene (50 ml) was refluxed for 2 h. The reaction mixture was washed with saturated sodium bicarbonate (100 ml) and then with distilled water (50 ml), dried with sodium sulfate and evaporated, to give colourless oil (98% yield). The colourless oil obtained above, K2CO3 (36 mmol) and 4,5,6,7–tetrahydro thieno[3,2–c] pyridin (22 mmol) in toluene (50 ml) were stirred at room temperature for 3 h. After removing the insoluble solid by filtration, the filtrate was concentrated and separated by flash to provide the target compound (yield 87%). Colourless single crystals were grown from a solution of petroleum ether and ethyl acetate (1:1 v/v).
All the H atoms were positioned geometrically and refined as riding atoms, with C—H = 1.00Å for methine, 0.99Å for methylene and C—H = 0.95Å for the other groups with Uiso(H) = 1.2Ueq(C).
Clopidogrel is an oral, thienopyridine class antiplatelet agent used to inhibit blood clots in coronary artery disease, peripheral vascular disease, and cerebrovascular disease (Muller et al., 2003; Aubert et al., 1985; Bipin et al., 2002; Bouisset & Radisson, 1991; Eric & Hiralal, 1989; Liu et al., 2008; Silva 2004; Savi et al., 1992; Savi et al., 1994; Sharis et al., 1998). The molecular structure of the title compound (Fig. 1), a derivative of clopidogrel, is reported here.
As shown in Fig. 1, there is a chiral carbon (C8) in the compound, and the benzene ring, the ester chain and the thienopyridine group are all linked to C8 and a molecular chiral center is formed. The thiophene ring of the thienopyridine group forms a plane and the C9–C14 benzen ring forms another plane. The dihedral angle formed between them is 65.46 (9)°. The packing molecules in crystal is consolidated by weak C—H···O, C—H···Cl and C—H···Br interactions.
The title compound is a derivative of the antiplatelet agent clopidogrel [systematic name (+)-(S)-methyl 2-(2-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetate]. For background to the bioactivity and applications of clopidogrel, see: Muller et al. (2003); Savi et al. (1994); Sharis et al. (1998). For the synthesis of other derivatives with thienopyridine, see: Aubert et al. (1985); Bouisset & Radisson (1991); Savi et al. (1992); Bipin et al. (2002); Eric & Hiralal (1989); Liu et al. (2008); Silva (2004).
Data collection: CrystalClear (Rigaku/MSC, 2005); cell
CrystalClear (Rigaku/MSC, 2005); data reduction: CrystalClear (Rigaku/MSC, 2005); 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: CrystalStructure (Rigaku/MSC, 2005).C18H19BrClNO2S | F(000) = 872 |
Mr = 428.76 | Dx = 1.545 Mg m−3 |
Monoclinic, P21/n | Cu Kα radiation, λ = 1.54187 Å |
Hall symbol: -P 2yn | Cell parameters from 2390 reflections |
a = 8.5707 (17) Å | θ = 27.5–72.3° |
b = 18.414 (4) Å | µ = 5.52 mm−1 |
c = 12.206 (2) Å | T = 113 K |
β = 106.89 (3)° | Prism, colourless |
V = 1843.3 (7) Å3 | 0.22 × 0.18 × 0.14 mm |
Z = 4 |
Rigaku Saturn diffractometer | 3546 independent reflections |
Radiation source: fine-focus sealed tube | 3220 reflections with I > 2σ(I) |
Multilayer monochromator | Rint = 0.055 |
Detector resolution: 14.63 pixels mm-1 | θmax = 72.5°, θmin = 4.5° |
ω scans | h = −10→10 |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | k = −22→22 |
Tmin = 0.377, Tmax = 0.512 | l = −14→11 |
18506 measured reflections |
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)] = 0.035 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.097 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0543P)2 + 1.1251P] where P = (Fo2 + 2Fc2)/3 |
3546 reflections | (Δ/σ)max = 0.001 |
217 parameters | Δρmax = 0.34 e Å−3 |
0 restraints | Δρmin = −0.69 e Å−3 |
C18H19BrClNO2S | V = 1843.3 (7) Å3 |
Mr = 428.76 | Z = 4 |
Monoclinic, P21/n | Cu Kα radiation |
a = 8.5707 (17) Å | µ = 5.52 mm−1 |
b = 18.414 (4) Å | T = 113 K |
c = 12.206 (2) Å | 0.22 × 0.18 × 0.14 mm |
β = 106.89 (3)° |
Rigaku Saturn diffractometer | 3546 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | 3220 reflections with I > 2σ(I) |
Tmin = 0.377, Tmax = 0.512 | Rint = 0.055 |
18506 measured reflections |
R[F2 > 2σ(F2)] = 0.035 | 0 restraints |
wR(F2) = 0.097 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.34 e Å−3 |
3546 reflections | Δρmin = −0.69 e Å−3 |
217 parameters |
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 > 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 | ||
Br1 | 0.70621 (4) | 0.800075 (19) | 0.63501 (3) | 0.04494 (13) | |
Cl1 | 0.63184 (7) | 0.55788 (3) | 0.47473 (5) | 0.02681 (15) | |
S1 | 0.70637 (7) | 0.51762 (3) | −0.19215 (5) | 0.02410 (14) | |
O1 | 0.7341 (2) | 0.75560 (8) | 0.22244 (14) | 0.0255 (3) | |
O2 | 0.57129 (19) | 0.72271 (8) | 0.32887 (14) | 0.0229 (3) | |
N1 | 0.7310 (2) | 0.60648 (9) | 0.15415 (15) | 0.0160 (3) | |
C1 | 0.5719 (3) | 0.58635 (13) | −0.2481 (2) | 0.0247 (5) | |
H1 | 0.5313 | 0.5965 | −0.3276 | 0.030* | |
C2 | 0.5302 (3) | 0.62460 (12) | −0.16565 (19) | 0.0215 (4) | |
H2 | 0.4566 | 0.6644 | −0.1807 | 0.026* | |
C3 | 0.6102 (2) | 0.59768 (11) | −0.05354 (18) | 0.0173 (4) | |
C4 | 0.7094 (3) | 0.54013 (11) | −0.05401 (18) | 0.0186 (4) | |
C5 | 0.8122 (3) | 0.50420 (12) | 0.05215 (19) | 0.0212 (4) | |
H5A | 0.9276 | 0.5188 | 0.0665 | 0.025* | |
H5B | 0.8052 | 0.4508 | 0.0430 | 0.025* | |
C6 | 0.7515 (3) | 0.52699 (11) | 0.15262 (18) | 0.0190 (4) | |
H6A | 0.6459 | 0.5030 | 0.1464 | 0.023* | |
H6B | 0.8306 | 0.5112 | 0.2252 | 0.023* | |
C7 | 0.5925 (3) | 0.62862 (11) | 0.05604 (18) | 0.0190 (4) | |
H7A | 0.5879 | 0.6823 | 0.0509 | 0.023* | |
H7B | 0.4892 | 0.6113 | 0.0679 | 0.023* | |
C8 | 0.6982 (2) | 0.62768 (11) | 0.26063 (17) | 0.0168 (4) | |
H8 | 0.5998 | 0.6012 | 0.2680 | 0.020* | |
C9 | 0.8421 (3) | 0.61285 (11) | 0.36541 (18) | 0.0181 (4) | |
C10 | 0.8233 (3) | 0.58555 (11) | 0.46718 (19) | 0.0205 (4) | |
C11 | 0.9545 (3) | 0.57802 (12) | 0.5653 (2) | 0.0263 (5) | |
H11 | 0.9384 | 0.5594 | 0.6338 | 0.032* | |
C12 | 1.1084 (3) | 0.59798 (13) | 0.5619 (2) | 0.0300 (5) | |
H12 | 1.1986 | 0.5940 | 0.6287 | 0.036* | |
C13 | 1.1313 (3) | 0.62372 (14) | 0.4615 (2) | 0.0310 (5) | |
H13 | 1.2378 | 0.6360 | 0.4589 | 0.037* | |
C14 | 0.9995 (3) | 0.63170 (12) | 0.3643 (2) | 0.0245 (5) | |
H14 | 1.0166 | 0.6503 | 0.2961 | 0.029* | |
C15 | 0.6710 (3) | 0.70946 (11) | 0.26505 (19) | 0.0185 (4) | |
C16 | 0.5484 (4) | 0.79869 (12) | 0.3521 (2) | 0.0314 (6) | |
H16A | 0.4978 | 0.8250 | 0.2798 | 0.038* | |
H16B | 0.6545 | 0.8217 | 0.3907 | 0.038* | |
C17 | 0.4393 (3) | 0.80103 (14) | 0.4279 (2) | 0.0340 (6) | |
H17A | 0.3316 | 0.7811 | 0.3849 | 0.041* | |
H17B | 0.4228 | 0.8525 | 0.4455 | 0.041* | |
C18 | 0.4994 (3) | 0.76028 (14) | 0.5389 (2) | 0.0302 (5) | |
H18A | 0.5145 | 0.7085 | 0.5227 | 0.036* | |
H18B | 0.4165 | 0.7631 | 0.5809 | 0.036* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br1 | 0.02728 (18) | 0.0748 (3) | 0.03292 (19) | −0.01154 (13) | 0.00900 (13) | −0.00602 (13) |
Cl1 | 0.0272 (3) | 0.0339 (3) | 0.0236 (3) | −0.0020 (2) | 0.0142 (2) | 0.0024 (2) |
S1 | 0.0222 (3) | 0.0319 (3) | 0.0195 (3) | 0.0020 (2) | 0.0081 (2) | −0.0041 (2) |
O1 | 0.0295 (9) | 0.0216 (7) | 0.0257 (8) | −0.0053 (6) | 0.0086 (7) | −0.0009 (6) |
O2 | 0.0255 (8) | 0.0222 (7) | 0.0237 (8) | 0.0041 (6) | 0.0116 (7) | −0.0012 (6) |
N1 | 0.0140 (8) | 0.0195 (8) | 0.0148 (9) | −0.0004 (6) | 0.0047 (7) | −0.0018 (6) |
C1 | 0.0228 (11) | 0.0338 (12) | 0.0172 (11) | −0.0044 (9) | 0.0051 (9) | −0.0004 (9) |
C2 | 0.0176 (11) | 0.0251 (10) | 0.0203 (11) | 0.0000 (8) | 0.0029 (8) | 0.0013 (8) |
C3 | 0.0130 (10) | 0.0218 (10) | 0.0173 (10) | −0.0031 (8) | 0.0045 (8) | −0.0007 (8) |
C4 | 0.0153 (10) | 0.0225 (10) | 0.0185 (10) | −0.0015 (8) | 0.0059 (8) | −0.0014 (8) |
C5 | 0.0195 (11) | 0.0246 (10) | 0.0196 (11) | 0.0047 (8) | 0.0059 (9) | −0.0009 (8) |
C6 | 0.0179 (10) | 0.0196 (10) | 0.0189 (11) | 0.0018 (8) | 0.0047 (8) | 0.0008 (8) |
C7 | 0.0163 (10) | 0.0234 (10) | 0.0167 (10) | 0.0024 (8) | 0.0038 (8) | −0.0010 (8) |
C8 | 0.0148 (10) | 0.0201 (10) | 0.0163 (10) | −0.0036 (7) | 0.0058 (8) | −0.0014 (8) |
C9 | 0.0178 (10) | 0.0180 (9) | 0.0176 (11) | −0.0003 (8) | 0.0036 (8) | −0.0026 (7) |
C10 | 0.0232 (11) | 0.0203 (10) | 0.0192 (11) | −0.0017 (8) | 0.0081 (9) | −0.0031 (8) |
C11 | 0.0326 (13) | 0.0258 (11) | 0.0175 (11) | 0.0011 (9) | 0.0025 (9) | −0.0016 (8) |
C12 | 0.0286 (13) | 0.0293 (12) | 0.0245 (12) | 0.0009 (10) | −0.0042 (10) | −0.0032 (9) |
C13 | 0.0186 (12) | 0.0335 (12) | 0.0363 (14) | −0.0035 (9) | 0.0007 (10) | −0.0006 (10) |
C14 | 0.0189 (11) | 0.0291 (11) | 0.0252 (12) | −0.0042 (9) | 0.0058 (9) | 0.0020 (9) |
C15 | 0.0152 (10) | 0.0215 (10) | 0.0163 (10) | −0.0006 (8) | 0.0008 (8) | −0.0022 (8) |
C16 | 0.0432 (16) | 0.0220 (11) | 0.0302 (14) | 0.0103 (10) | 0.0128 (12) | −0.0002 (9) |
C17 | 0.0275 (13) | 0.0368 (13) | 0.0380 (15) | 0.0113 (10) | 0.0102 (11) | −0.0063 (11) |
C18 | 0.0208 (12) | 0.0403 (13) | 0.0321 (13) | −0.0035 (10) | 0.0118 (10) | −0.0084 (10) |
Br1—C18 | 1.961 (3) | C7—H7B | 0.9900 |
Cl1—C10 | 1.746 (2) | C8—C9 | 1.522 (3) |
S1—C1 | 1.714 (2) | C8—C15 | 1.527 (3) |
S1—C4 | 1.729 (2) | C8—H8 | 1.0000 |
O1—C15 | 1.204 (3) | C9—C10 | 1.392 (3) |
O2—C15 | 1.335 (3) | C9—C14 | 1.397 (3) |
O2—C16 | 1.452 (3) | C10—C11 | 1.391 (3) |
N1—C8 | 1.461 (3) | C11—C12 | 1.382 (4) |
N1—C6 | 1.475 (3) | C11—H11 | 0.9500 |
N1—C7 | 1.478 (3) | C12—C13 | 1.380 (4) |
C1—C2 | 1.358 (3) | C12—H12 | 0.9500 |
C1—H1 | 0.9500 | C13—C14 | 1.388 (3) |
C2—C3 | 1.429 (3) | C13—H13 | 0.9500 |
C2—H2 | 0.9500 | C14—H14 | 0.9500 |
C3—C4 | 1.359 (3) | C16—C17 | 1.495 (4) |
C3—C7 | 1.502 (3) | C16—H16A | 0.9900 |
C4—C5 | 1.494 (3) | C16—H16B | 0.9900 |
C5—C6 | 1.524 (3) | C17—C18 | 1.503 (4) |
C5—H5A | 0.9900 | C17—H17A | 0.9900 |
C5—H5B | 0.9900 | C17—H17B | 0.9900 |
C6—H6A | 0.9900 | C18—H18A | 0.9900 |
C6—H6B | 0.9900 | C18—H18B | 0.9900 |
C7—H7A | 0.9900 | ||
C1—S1—C4 | 91.66 (11) | C15—C8—H8 | 109.6 |
C15—O2—C16 | 115.84 (18) | C10—C9—C14 | 117.4 (2) |
C8—N1—C6 | 109.32 (16) | C10—C9—C8 | 122.62 (19) |
C8—N1—C7 | 109.27 (16) | C14—C9—C8 | 119.78 (19) |
C6—N1—C7 | 109.52 (16) | C9—C10—C11 | 122.0 (2) |
C2—C1—S1 | 112.29 (17) | C9—C10—Cl1 | 120.45 (17) |
C2—C1—H1 | 123.9 | C11—C10—Cl1 | 117.54 (18) |
S1—C1—H1 | 123.9 | C12—C11—C10 | 119.2 (2) |
C1—C2—C3 | 111.9 (2) | C12—C11—H11 | 120.4 |
C1—C2—H2 | 124.1 | C10—C11—H11 | 120.4 |
C3—C2—H2 | 124.1 | C13—C12—C11 | 120.1 (2) |
C4—C3—C2 | 113.13 (19) | C13—C12—H12 | 119.9 |
C4—C3—C7 | 121.65 (19) | C11—C12—H12 | 119.9 |
C2—C3—C7 | 125.21 (19) | C12—C13—C14 | 120.3 (2) |
C3—C4—C5 | 123.63 (19) | C12—C13—H13 | 119.8 |
C3—C4—S1 | 111.03 (16) | C14—C13—H13 | 119.8 |
C5—C4—S1 | 125.28 (16) | C13—C14—C9 | 120.9 (2) |
C4—C5—C6 | 108.83 (17) | C13—C14—H14 | 119.5 |
C4—C5—H5A | 109.9 | C9—C14—H14 | 119.5 |
C6—C5—H5A | 109.9 | O1—C15—O2 | 124.55 (19) |
C4—C5—H5B | 109.9 | O1—C15—C8 | 126.0 (2) |
C6—C5—H5B | 109.9 | O2—C15—C8 | 109.33 (17) |
H5A—C5—H5B | 108.3 | O2—C16—C17 | 107.0 (2) |
N1—C6—C5 | 110.68 (17) | O2—C16—H16A | 110.3 |
N1—C6—H6A | 109.5 | C17—C16—H16A | 110.3 |
C5—C6—H6A | 109.5 | O2—C16—H16B | 110.3 |
N1—C6—H6B | 109.5 | C17—C16—H16B | 110.3 |
C5—C6—H6B | 109.5 | H16A—C16—H16B | 108.6 |
H6A—C6—H6B | 108.1 | C16—C17—C18 | 115.6 (2) |
N1—C7—C3 | 110.59 (17) | C16—C17—H17A | 108.4 |
N1—C7—H7A | 109.5 | C18—C17—H17A | 108.4 |
C3—C7—H7A | 109.5 | C16—C17—H17B | 108.4 |
N1—C7—H7B | 109.5 | C18—C17—H17B | 108.4 |
C3—C7—H7B | 109.5 | H17A—C17—H17B | 107.4 |
H7A—C7—H7B | 108.1 | C17—C18—Br1 | 111.47 (18) |
N1—C8—C9 | 112.41 (17) | C17—C18—H18A | 109.3 |
N1—C8—C15 | 111.46 (17) | Br1—C18—H18A | 109.3 |
C9—C8—C15 | 104.01 (16) | C17—C18—H18B | 109.3 |
N1—C8—H8 | 109.6 | Br1—C18—H18B | 109.3 |
C9—C8—H8 | 109.6 | H18A—C18—H18B | 108.0 |
C4—S1—C1—C2 | −0.33 (18) | C15—C8—C9—C10 | 99.5 (2) |
S1—C1—C2—C3 | 0.3 (2) | N1—C8—C9—C14 | 45.0 (3) |
C1—C2—C3—C4 | −0.1 (3) | C15—C8—C9—C14 | −75.8 (2) |
C1—C2—C3—C7 | 179.0 (2) | C14—C9—C10—C11 | 1.0 (3) |
C2—C3—C4—C5 | 177.21 (19) | C8—C9—C10—C11 | −174.4 (2) |
C7—C3—C4—C5 | −2.0 (3) | C14—C9—C10—Cl1 | −177.92 (16) |
C2—C3—C4—S1 | −0.1 (2) | C8—C9—C10—Cl1 | 6.7 (3) |
C7—C3—C4—S1 | −179.26 (15) | C9—C10—C11—C12 | −0.2 (3) |
C1—S1—C4—C3 | 0.24 (17) | Cl1—C10—C11—C12 | 178.70 (18) |
C1—S1—C4—C5 | −177.02 (19) | C10—C11—C12—C13 | −1.2 (4) |
C3—C4—C5—C6 | 16.2 (3) | C11—C12—C13—C14 | 1.9 (4) |
S1—C4—C5—C6 | −166.92 (16) | C12—C13—C14—C9 | −1.1 (4) |
C8—N1—C6—C5 | −171.04 (17) | C10—C9—C14—C13 | −0.3 (3) |
C7—N1—C6—C5 | 69.3 (2) | C8—C9—C14—C13 | 175.2 (2) |
C4—C5—C6—N1 | −48.6 (2) | C16—O2—C15—O1 | −3.8 (3) |
C8—N1—C7—C3 | −171.30 (16) | C16—O2—C15—C8 | 173.21 (19) |
C6—N1—C7—C3 | −51.6 (2) | N1—C8—C15—O1 | −32.0 (3) |
C4—C3—C7—N1 | 19.3 (3) | C9—C8—C15—O1 | 89.4 (3) |
C2—C3—C7—N1 | −159.78 (19) | N1—C8—C15—O2 | 151.02 (17) |
C6—N1—C8—C9 | 65.3 (2) | C9—C8—C15—O2 | −87.6 (2) |
C7—N1—C8—C9 | −174.82 (16) | C15—O2—C16—C17 | −177.7 (2) |
C6—N1—C8—C15 | −178.34 (17) | O2—C16—C17—C18 | 57.6 (3) |
C7—N1—C8—C15 | −58.5 (2) | C16—C17—C18—Br1 | 61.8 (3) |
N1—C8—C9—C10 | −139.74 (19) |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2···O1i | 0.95 | 2.43 | 3.340 (3) | 161 |
C7—H7A···O1 | 0.99 | 2.50 | 3.103 (3) | 119 |
C8—H8···Cl1 | 1.00 | 2.58 | 3.110 (2) | 113 |
C16—H16B···Br1 | 0.99 | 2.91 | 3.323 (3) | 106 |
Symmetry code: (i) x−1/2, −y+3/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | C18H19BrClNO2S |
Mr | 428.76 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 113 |
a, b, c (Å) | 8.5707 (17), 18.414 (4), 12.206 (2) |
β (°) | 106.89 (3) |
V (Å3) | 1843.3 (7) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 5.52 |
Crystal size (mm) | 0.22 × 0.18 × 0.14 |
Data collection | |
Diffractometer | Rigaku Saturn |
Absorption correction | Multi-scan (CrystalClear; Rigaku, 2005) |
Tmin, Tmax | 0.377, 0.512 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 18506, 3546, 3220 |
Rint | 0.055 |
(sin θ/λ)max (Å−1) | 0.619 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.035, 0.097, 1.04 |
No. of reflections | 3546 |
No. of parameters | 217 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.34, −0.69 |
Computer programs: CrystalClear (Rigaku/MSC, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008), CrystalStructure (Rigaku/MSC, 2005).
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2···O1i | 0.95 | 2.43 | 3.340 (3) | 161.1 |
C7—H7A···O1 | 0.99 | 2.50 | 3.103 (3) | 119.0 |
C8—H8···Cl1 | 1.00 | 2.58 | 3.110 (2) | 112.6 |
C16—H16B···Br1 | 0.99 | 2.91 | 3.323 (3) | 105.9 |
Symmetry code: (i) x−1/2, −y+3/2, z−1/2. |
Acknowledgements
The authors thank Mr Hai-Bin Song of Nankai University, for the X-ray crystallographic determination and for helpful suggestions.
References
Aubert, D., Ferrand, C. & Maffrand, J. P. (1985). US Patent 4 529 596. Google Scholar
Bipin, P., Bhushan, L. V. & Bhushan, L. B. (2002). WO Patent 02/059128 A2. Google Scholar
Bouisset, M. & Radisson, J. (1991). US Patent 5 036 156. Google Scholar
Eric, L. & Hiralal, N. K. (1989). Eur. Patent 0 342 118 A1. Google Scholar
Liu, D. K., Liu, Y., Liu, M., Zhang, S. J., Cheng, D., Jin, L. Y., Xu, W. R. & Liu, C. X. (2008). CN Patent 101284838A. Google Scholar
Muller, I., Besta, F., Schulz, C., Li, Z., Massberg, S. & Gawaz, M. (2003). Circulation, 108, 2195–2197. Web of Science CrossRef PubMed Google Scholar
Rigaku/MSC (2005). CrystalClear and CrystalStructure. Rigaku/MSC Inc., The Woodlands, Texas,USA. Google Scholar
Savi, P., Combalbert, J., Gaich, C., Rouchon, M. C., Maffrand, J. P., Berger, Y. & Herbert, J. M. (1994). Thromb. Haemost. 72, 313–317. CAS PubMed Web of Science Google Scholar
Savi, P., Herbert, J. M., Pflieger, A. M., Dol, F., Delebassee, D., Combalbert, J., Defreyn, G. & Maffrand, J. P. (1992). Biochem. Pharmacol. 44, 527–532. CrossRef PubMed CAS Web of Science Google Scholar
Sharis, P. J., Cannon, C. P. & Loscalzo, J. (1998). Ann. Intern. Med. 129, 394–405. Web of Science CrossRef CAS PubMed Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Silva, R. A. (2004). WO Patent 2004/094374 A2. 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.
Clopidogrel is an oral, thienopyridine class antiplatelet agent used to inhibit blood clots in coronary artery disease, peripheral vascular disease, and cerebrovascular disease (Muller et al., 2003; Aubert et al., 1985; Bipin et al., 2002; Bouisset & Radisson, 1991; Eric & Hiralal, 1989; Liu et al., 2008; Silva 2004; Savi et al., 1992; Savi et al., 1994; Sharis et al., 1998). The molecular structure of the title compound (Fig. 1), a derivative of clopidogrel, is reported here.
As shown in Fig. 1, there is a chiral carbon (C8) in the compound, and the benzene ring, the ester chain and the thienopyridine group are all linked to C8 and a molecular chiral center is formed. The thiophene ring of the thienopyridine group forms a plane and the C9–C14 benzen ring forms another plane. The dihedral angle formed between them is 65.46 (9)°. The packing molecules in crystal is consolidated by weak C—H···O, C—H···Cl and C—H···Br interactions.