organic compounds
N-(5-Ethylsulfanyl-1,3,4-thiadiazol-2-yl)-2-(4,5,6,7-tetrahydrothieno[3,2-c]pyridin-5-yl)acetamide
aSchool of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, People's Republic of China, bSchool of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, People's Republic of China, and cTianjin Institute of Pharmaceutical Research, Tianjin, 300193, People's Republic of China
*Correspondence e-mail: liudk@tjipr.com
In the title compound, C13H16N4OS3, a thienopyridinederivative, the tetrahydropyridine ring exhibits a half-chair conformation, and the folded conformation of the molecule is defined by the N—C—C—N torsion angle of −78.85 (16)°. The crystal packing features intermolecular C—H⋯N, N—H⋯N and C—H⋯O hydrogen bonds.
Related literature
The title compound is a potential antiplatelet agent. As irreversible P2Y12 antagonists, thienopyridines have proved the relevance of inhibiting signaling via the platelet-specific P2Y12 ADP receptor in the prevention of cardiovascular events, see: Iyengar (2009); Franchini & Mannucci, (2009); Van Giezen et al. (2009); Van Giezen & Humphries (2005). For a related structure, see: Chen et al. (2010). For the synthesis of the title compound, see: Liu et al. (2008).
Experimental
Crystal data
|
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
10.1107/S1600536811017107/kp2327sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811017107/kp2327Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811017107/kp2327Isup3.cdx
Chloracetyl chloride was dropwised added into a mixture of 5-(ethylthio)-1,3,4-thiadiazol-2-amine, TEA and DMF at 268 K. After stirred for 3 h, the mixture was poured into cold water. 2-Chloro-N-(5-(ethylthio)-1,3,4-thiadiazol-2-yl)acetamide was precipitated as an intermediate. Then the intermediate, equimolar quantities thienopyridine salt and TEA were refluxed for 5 h in acetonitrile, and the product was obtained by silica gel
Crystallisation of the obtained yellow solid from methanol afforded light-yellow crystals suitable for X-ray analysis.The N–H bond was restrained to 0.90 Å, and other H atoms were positioned geometrioncally and refined using a riding model, with d(C—H)=0.95–0.99 Å, and Uiso(H)=1.2Ueq(C) of the parent atom.
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).Fig. 1. The molecular structure of (I), with the atom-numbering scheme and 50% probability displacement ellipsoids. | |
Fig. 2. Packing diagram for (I) with hydrogen bonds drawn as dashed lines. |
C13H16N4OS3 | F(000) = 712 |
Mr = 340.48 | Dx = 1.513 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 4582 reflections |
a = 6.532 (4) Å | θ = 1.7–27.9° |
b = 9.788 (6) Å | µ = 0.50 mm−1 |
c = 23.491 (15) Å | T = 113 K |
β = 95.524 (6)° | Prism, colourless |
V = 1494.8 (16) Å3 | 0.28 × 0.22 × 0.18 mm |
Z = 4 |
Rigaku Saturn CCD area-detector diffractometer | 3545 independent reflections |
Radiation source: rotating anode | 2653 reflections with I > 2σ(I) |
Multilayer monochromator | Rint = 0.036 |
Detector resolution: 14.63 pixels mm-1 | θmax = 27.9°, θmin = 1.7° |
ω and ϕ scans | h = −8→8 |
Absorption correction: multi-scan (CrystalClear; Rigaku/MSC, 2005) | k = −12→12 |
Tmin = 0.873, Tmax = 0.916 | l = −28→30 |
12423 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)] = 0.030 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.079 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | w = 1/[σ2(Fo2) + (0.042P)2] where P = (Fo2 + 2Fc2)/3 |
3545 reflections | (Δ/σ)max = 0.004 |
195 parameters | Δρmax = 0.44 e Å−3 |
1 restraint | Δρmin = −0.23 e Å−3 |
C13H16N4OS3 | V = 1494.8 (16) Å3 |
Mr = 340.48 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 6.532 (4) Å | µ = 0.50 mm−1 |
b = 9.788 (6) Å | T = 113 K |
c = 23.491 (15) Å | 0.28 × 0.22 × 0.18 mm |
β = 95.524 (6)° |
Rigaku Saturn CCD area-detector diffractometer | 3545 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku/MSC, 2005) | 2653 reflections with I > 2σ(I) |
Tmin = 0.873, Tmax = 0.916 | Rint = 0.036 |
12423 measured reflections |
R[F2 > 2σ(F2)] = 0.030 | 1 restraint |
wR(F2) = 0.079 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | Δρmax = 0.44 e Å−3 |
3545 reflections | Δρmin = −0.23 e Å−3 |
195 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 | ||
S1 | 1.09432 (6) | −0.17109 (4) | 0.167990 (17) | 0.02366 (11) | |
S2 | 0.59937 (6) | 0.64557 (4) | 0.091056 (16) | 0.01921 (10) | |
S3 | 0.24260 (6) | 0.77190 (4) | 0.021966 (17) | 0.02324 (11) | |
O1 | 0.87853 (17) | 0.54420 (11) | 0.17006 (4) | 0.0257 (3) | |
N1 | 1.16286 (18) | 0.27779 (12) | 0.15327 (5) | 0.0188 (3) | |
N2 | 0.9587 (2) | 0.51028 (13) | 0.08012 (5) | 0.0195 (3) | |
N3 | 0.76496 (19) | 0.59529 (13) | −0.00107 (5) | 0.0199 (3) | |
N4 | 0.58266 (19) | 0.66332 (13) | −0.01858 (5) | 0.0196 (3) | |
C1 | 1.3598 (2) | 0.20466 (16) | 0.15877 (7) | 0.0220 (3) | |
H1A | 1.4181 | 0.2046 | 0.1993 | 0.026* | |
H1B | 1.4584 | 0.2513 | 0.1359 | 0.026* | |
C2 | 1.3270 (2) | 0.05905 (16) | 0.13799 (7) | 0.0233 (3) | |
H2A | 1.2955 | 0.0577 | 0.0959 | 0.028* | |
H2B | 1.4531 | 0.0045 | 0.1479 | 0.028* | |
C3 | 1.1520 (2) | 0.00006 (15) | 0.16615 (6) | 0.0194 (3) | |
C4 | 0.8868 (2) | −0.14081 (15) | 0.20530 (7) | 0.0234 (3) | |
H4 | 0.7989 | −0.2103 | 0.2173 | 0.028* | |
C5 | 0.8627 (2) | −0.00627 (15) | 0.21566 (6) | 0.0214 (3) | |
H5 | 0.7562 | 0.0299 | 0.2360 | 0.026* | |
C6 | 1.0153 (2) | 0.07498 (15) | 0.19257 (6) | 0.0184 (3) | |
C7 | 1.0281 (2) | 0.22806 (15) | 0.19494 (6) | 0.0197 (3) | |
H7A | 0.8889 | 0.2676 | 0.1865 | 0.024* | |
H7B | 1.0824 | 0.2573 | 0.2338 | 0.024* | |
C8 | 1.1928 (2) | 0.42478 (15) | 0.15876 (7) | 0.0220 (3) | |
H8A | 1.3052 | 0.4538 | 0.1361 | 0.026* | |
H8B | 1.2324 | 0.4484 | 0.1993 | 0.026* | |
C9 | 0.9969 (2) | 0.49862 (14) | 0.13783 (7) | 0.0204 (3) | |
C10 | 0.7907 (2) | 0.57771 (14) | 0.05403 (6) | 0.0181 (3) | |
C11 | 0.4826 (2) | 0.69389 (15) | 0.02453 (6) | 0.0190 (3) | |
C12 | 0.2098 (3) | 0.84165 (17) | −0.04979 (7) | 0.0300 (4) | |
H12A | 0.3070 | 0.7958 | −0.0734 | 0.036* | |
H12B | 0.0686 | 0.8216 | −0.0669 | 0.036* | |
C13 | 0.2449 (3) | 0.99201 (18) | −0.05141 (8) | 0.0362 (4) | |
H13A | 0.1524 | 1.0379 | −0.0271 | 0.054* | |
H13B | 0.2173 | 1.0249 | −0.0908 | 0.054* | |
H13C | 0.3879 | 1.0121 | −0.0374 | 0.054* | |
H2 | 1.047 (2) | 0.4714 (17) | 0.0587 (7) | 0.038 (5)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0286 (2) | 0.0204 (2) | 0.0220 (2) | 0.00424 (17) | 0.00251 (17) | 0.00018 (16) |
S2 | 0.0206 (2) | 0.02023 (18) | 0.0177 (2) | 0.00016 (15) | 0.00653 (16) | −0.00083 (15) |
S3 | 0.0217 (2) | 0.0242 (2) | 0.0244 (2) | 0.00316 (16) | 0.00550 (17) | 0.00097 (16) |
O1 | 0.0338 (7) | 0.0255 (6) | 0.0190 (6) | 0.0047 (5) | 0.0095 (5) | 0.0034 (5) |
N1 | 0.0177 (7) | 0.0200 (6) | 0.0189 (7) | 0.0010 (5) | 0.0038 (5) | 0.0011 (5) |
N2 | 0.0192 (7) | 0.0222 (6) | 0.0178 (7) | 0.0017 (5) | 0.0052 (5) | −0.0018 (5) |
N3 | 0.0185 (7) | 0.0228 (6) | 0.0186 (7) | −0.0007 (5) | 0.0030 (5) | −0.0029 (5) |
N4 | 0.0179 (7) | 0.0210 (6) | 0.0200 (7) | −0.0015 (5) | 0.0026 (5) | −0.0019 (5) |
C1 | 0.0165 (8) | 0.0283 (8) | 0.0213 (8) | 0.0002 (6) | 0.0017 (6) | −0.0002 (6) |
C2 | 0.0190 (8) | 0.0286 (8) | 0.0224 (8) | 0.0039 (7) | 0.0031 (7) | −0.0024 (7) |
C3 | 0.0197 (8) | 0.0213 (7) | 0.0164 (8) | 0.0025 (6) | −0.0016 (6) | 0.0005 (6) |
C4 | 0.0278 (9) | 0.0243 (8) | 0.0181 (8) | −0.0009 (7) | 0.0020 (7) | 0.0045 (6) |
C5 | 0.0235 (8) | 0.0252 (8) | 0.0157 (8) | 0.0019 (6) | 0.0031 (6) | 0.0020 (6) |
C6 | 0.0198 (8) | 0.0210 (7) | 0.0141 (7) | 0.0014 (6) | −0.0003 (6) | 0.0012 (6) |
C7 | 0.0198 (8) | 0.0223 (7) | 0.0174 (8) | 0.0003 (6) | 0.0042 (6) | −0.0009 (6) |
C8 | 0.0216 (8) | 0.0220 (8) | 0.0223 (8) | −0.0037 (6) | 0.0020 (7) | 0.0002 (6) |
C9 | 0.0248 (8) | 0.0154 (7) | 0.0216 (8) | −0.0056 (6) | 0.0049 (7) | 0.0010 (6) |
C10 | 0.0191 (8) | 0.0166 (7) | 0.0195 (8) | −0.0025 (6) | 0.0067 (6) | −0.0013 (6) |
C11 | 0.0193 (8) | 0.0176 (7) | 0.0200 (8) | −0.0034 (6) | 0.0024 (6) | −0.0011 (6) |
C12 | 0.0335 (10) | 0.0342 (9) | 0.0216 (9) | 0.0088 (8) | −0.0004 (7) | −0.0013 (7) |
C13 | 0.0387 (11) | 0.0375 (10) | 0.0303 (10) | −0.0098 (8) | −0.0067 (8) | 0.0095 (8) |
S1—C4 | 1.7096 (18) | C2—H2A | 0.9900 |
S1—C3 | 1.7186 (18) | C2—H2B | 0.9900 |
S2—C10 | 1.7232 (16) | C3—C6 | 1.352 (2) |
S2—C11 | 1.7372 (18) | C4—C5 | 1.351 (2) |
S3—C11 | 1.7396 (18) | C4—H4 | 0.9500 |
S3—C12 | 1.812 (2) | C5—C6 | 1.423 (2) |
O1—C9 | 1.2179 (18) | C5—H5 | 0.9500 |
N1—C8 | 1.456 (2) | C6—C7 | 1.501 (2) |
N1—C7 | 1.4614 (18) | C7—H7A | 0.9900 |
N1—C1 | 1.467 (2) | C7—H7B | 0.9900 |
N2—C9 | 1.359 (2) | C8—C9 | 1.510 (2) |
N2—C10 | 1.373 (2) | C8—H8A | 0.9900 |
N2—H2 | 0.885 (9) | C8—H8B | 0.9900 |
N3—C10 | 1.300 (2) | C12—C13 | 1.490 (3) |
N3—N4 | 1.3914 (18) | C12—H12A | 0.9900 |
N4—C11 | 1.2921 (19) | C12—H12B | 0.9900 |
C1—C2 | 1.515 (2) | C13—H13A | 0.9800 |
C1—H1A | 0.9900 | C13—H13B | 0.9800 |
C1—H1B | 0.9900 | C13—H13C | 0.9800 |
C2—C3 | 1.491 (2) | ||
C4—S1—C3 | 91.75 (7) | C5—C6—C7 | 125.60 (13) |
C10—S2—C11 | 85.86 (8) | N1—C7—C6 | 110.02 (11) |
C11—S3—C12 | 102.89 (8) | N1—C7—H7A | 109.7 |
C8—N1—C7 | 110.75 (11) | C6—C7—H7A | 109.7 |
C8—N1—C1 | 111.43 (12) | N1—C7—H7B | 109.7 |
C7—N1—C1 | 110.99 (12) | C6—C7—H7B | 109.7 |
C9—N2—C10 | 123.21 (13) | H7A—C7—H7B | 108.2 |
C9—N2—H2 | 117.7 (13) | N1—C8—C9 | 110.00 (13) |
C10—N2—H2 | 119.1 (13) | N1—C8—H8A | 109.7 |
C10—N3—N4 | 112.50 (12) | C9—C8—H8A | 109.7 |
C11—N4—N3 | 111.23 (13) | N1—C8—H8B | 109.7 |
N1—C1—C2 | 109.60 (13) | C9—C8—H8B | 109.7 |
N1—C1—H1A | 109.8 | H8A—C8—H8B | 108.2 |
C2—C1—H1A | 109.8 | O1—C9—N2 | 121.50 (15) |
N1—C1—H1B | 109.8 | O1—C9—C8 | 122.81 (15) |
C2—C1—H1B | 109.8 | N2—C9—C8 | 115.69 (13) |
H1A—C1—H1B | 108.2 | N3—C10—N2 | 121.95 (13) |
C3—C2—C1 | 108.17 (12) | N3—C10—S2 | 114.88 (12) |
C3—C2—H2A | 110.1 | N2—C10—S2 | 123.17 (12) |
C1—C2—H2A | 110.1 | N4—C11—S2 | 115.51 (12) |
C3—C2—H2B | 110.1 | N4—C11—S3 | 126.62 (13) |
C1—C2—H2B | 110.1 | S2—C11—S3 | 117.83 (9) |
H2A—C2—H2B | 108.4 | C13—C12—S3 | 113.02 (12) |
C6—C3—C2 | 124.21 (14) | C13—C12—H12A | 109.0 |
C6—C3—S1 | 111.17 (12) | S3—C12—H12A | 109.0 |
C2—C3—S1 | 124.61 (11) | C13—C12—H12B | 109.0 |
C5—C4—S1 | 111.89 (12) | S3—C12—H12B | 109.0 |
C5—C4—H4 | 124.1 | H12A—C12—H12B | 107.8 |
S1—C4—H4 | 124.1 | C12—C13—H13A | 109.5 |
C4—C5—C6 | 112.24 (14) | C12—C13—H13B | 109.5 |
C4—C5—H5 | 123.9 | H13A—C13—H13B | 109.5 |
C6—C5—H5 | 123.9 | C12—C13—H13C | 109.5 |
C3—C6—C5 | 112.94 (14) | H13A—C13—H13C | 109.5 |
C3—C6—C7 | 121.45 (13) | H13B—C13—H13C | 109.5 |
C10—N3—N4—C11 | 0.50 (17) | C7—N1—C8—C9 | −70.74 (16) |
C8—N1—C1—C2 | −165.54 (12) | C1—N1—C8—C9 | 165.18 (12) |
C7—N1—C1—C2 | 70.53 (16) | C10—N2—C9—O1 | 2.6 (2) |
N1—C1—C2—C3 | −49.63 (17) | C10—N2—C9—C8 | −178.09 (13) |
C1—C2—C3—C6 | 16.2 (2) | N1—C8—C9—O1 | 100.49 (17) |
C1—C2—C3—S1 | −165.28 (12) | N1—C8—C9—N2 | −78.85 (16) |
C4—S1—C3—C6 | −0.65 (13) | N4—N3—C10—N2 | 178.63 (12) |
C4—S1—C3—C2 | −179.37 (14) | N4—N3—C10—S2 | −1.53 (16) |
C3—S1—C4—C5 | 0.16 (13) | C9—N2—C10—N3 | 175.29 (14) |
S1—C4—C5—C6 | 0.36 (18) | C9—N2—C10—S2 | −4.5 (2) |
C2—C3—C6—C5 | 179.69 (14) | C11—S2—C10—N3 | 1.57 (12) |
S1—C3—C6—C5 | 0.97 (17) | C11—S2—C10—N2 | −178.59 (13) |
C2—C3—C6—C7 | 0.9 (2) | N3—N4—C11—S2 | 0.73 (16) |
S1—C3—C6—C7 | −177.84 (12) | N3—N4—C11—S3 | −176.86 (10) |
C4—C5—C6—C3 | −0.9 (2) | C10—S2—C11—N4 | −1.29 (12) |
C4—C5—C6—C7 | 177.88 (15) | C10—S2—C11—S3 | 176.53 (10) |
C8—N1—C7—C6 | −174.53 (12) | C12—S3—C11—N4 | −16.16 (16) |
C1—N1—C7—C6 | −50.20 (16) | C12—S3—C11—S2 | 166.30 (9) |
C3—C6—C7—N1 | 15.4 (2) | C11—S3—C12—C13 | −103.33 (14) |
C5—C6—C7—N1 | −163.23 (14) |
D—H···A | D—H | H···A | D···A | D—H···A |
C12—H12B···N1i | 0.99 | 2.60 | 3.473 (3) | 147 |
N2—H2···N3ii | 0.89 (1) | 2.02 (1) | 2.902 (2) | 171 (2) |
C5—H5···O1iii | 0.95 | 2.46 | 3.279 (2) | 145 |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) −x+2, −y+1, −z; (iii) −x+3/2, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C13H16N4OS3 |
Mr | 340.48 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 113 |
a, b, c (Å) | 6.532 (4), 9.788 (6), 23.491 (15) |
β (°) | 95.524 (6) |
V (Å3) | 1494.8 (16) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.50 |
Crystal size (mm) | 0.28 × 0.22 × 0.18 |
Data collection | |
Diffractometer | Rigaku Saturn CCD area-detector diffractometer |
Absorption correction | Multi-scan (CrystalClear; Rigaku/MSC, 2005) |
Tmin, Tmax | 0.873, 0.916 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 12423, 3545, 2653 |
Rint | 0.036 |
(sin θ/λ)max (Å−1) | 0.659 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.030, 0.079, 1.03 |
No. of reflections | 3545 |
No. of parameters | 195 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.44, −0.23 |
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 |
C12—H12B···N1i | 0.99 | 2.60 | 3.473 (3) | 147 |
N2—H2···N3ii | 0.885 (9) | 2.023 (10) | 2.902 (2) | 171.4 (18) |
C5—H5···O1iii | 0.95 | 2.46 | 3.279 (2) | 145 |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) −x+2, −y+1, −z; (iii) −x+3/2, y−1/2, −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
Chen, J.-F., Liu, Y., Wang, J.-Y. & Liu, D.-K. (2010). Acta Cryst. E66, o3213. Web of Science CSD CrossRef IUCr Journals Google Scholar
Franchini, M. & Mannucci, P. M. (2009). Eur. J. Int. Med. 20, 733–738. CrossRef CAS Google Scholar
Iyengar, S. (2009). J. Thromb. Thrombolysis, 27, 300–306. Web of Science CrossRef PubMed CAS 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
Rigaku/MSC (2005). CrystalClear and CrystalStructure. Rigaku/MSC Inc., The Woodlands, Texas, USA. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Van Giezen, J. J. J., Berntsson, P., Zachrisson, H. & Bjorkman, J. A. (2009). Thromb. Res. 124, 565–571. Web of Science CrossRef PubMed CAS Google Scholar
Van Giezen, J. J. J. & Humphries, R. G. (2005). Sem. Thromb. Hemost. 31, 195–204. CrossRef CAS 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.
As irreversible P2Y12 antagonists, the thienopyridines (e.g., clopidogrel and prasugrel) have been further proved the relevance of inhibiting signaling via the platelet-specific P2Y12 ADP receptor in the prevention of cardiovascular events (Iyengar, 2009; Van Giezen & Humphries, 2005; Franchini, et al., 2009). The structure of the title compound (I), a new derivative of thienopyridine, is presented here.
The tetrahydropyridine ring is in a half-chair conformation (Fig. 1). The thiadiazole ring plane (r.m.s. deviation 0.0020Å) and the acidamide plane (r.m.s. deviation 0.0074 Å) are almost coplanar, with a dihedral angle of 3.24 (9)°. The dihedral angles formed between the thiadiazole ring plane and the thiophene ring plane, the acidamide plane and the thiophene ring plane are 76.19 (6)° and 78.47 (7)° , respectively. Crystal packing is via hydrogen bonds C—H···N, N—H···N and C—H···O (Table 1, Fig. 2).