Literature DB >> 26594466

Crystal structure of 2-acetyl-5-(3,4-di-meth-oxy-phen-yl)-6-eth-oxy-carbonyl-3,7-dimethyl-5H-thia-zolo[3,2-a]pyrimidin-8-ium chloride.

N L Prasad1, M S Krishnamurthy1, Noor Shahina Begum1.   

Abstract

The title mol-ecular salt, C21H25N2O5S(+)·Cl(-), crystallizes with two ion pairs in the asymmetric unit. The cations have similar conformations (r.m.s. overlay fit = 0.40 Å), with one of them showing disorder of the terminal methyl group of the ester in a 0.72 (2):0.28 (2) ratio. In the first cation, the 3,4-dimeth-oxy-substituted phenyl ring subtends a dihedral angle of 88.38 (7)° with the pyrimidine ring and 6.79 (8)° with the thia-zole ring. The equivalent data for the second cation are 89.97 (3) and 6.42 (7)°, respectively. The pyrimidine ring adopts a sofa conformation in each cation. In the crystal, the components are linked by N-H⋯Cl hydrogen bonds, generating isolated ion pairs. The ion pairs are are linked by C-H⋯O inter-actions, generating a three-dimensional network. In addition, a weak C-H⋯π inter-action is observed.

Entities:  

Keywords:  C—H⋯π inter­actions; biological activity; chloride; crystal structure; hydrogen bonding; pharmacological properties; pyrimidine derivatives; pyrimidinium; salt

Year:  2015        PMID: 26594466      PMCID: PMC4647379          DOI: 10.1107/S2056989015016229

Source DB:  PubMed          Journal:  Acta Crystallogr E Crystallogr Commun


Related literature

For the pharmacological properties of pyrimidine derivatives, see: Ashok et al. (2007 ▸); Alam et al. (2010 ▸); Kulakov et al. (2009 ▸); Zhi et al. (2008 ▸). For conformational effects on biological activity, see: Rovnyak et al. (1995 ▸). For related structures, see: Prasad et al. (2014 ▸); Nagarajaiah et al. (2012 ▸).

Experimental

Crystal data

C21H25N2O5S+·Cl− M = 452.94 Triclinic, a = 9.9000 (6) Å b = 11.8563 (7) Å c = 19.0377 (11) Å α = 80.827 (2)° β = 83.999 (2)° γ = 86.071 (2)° V = 2190.9 (2) Å3 Z = 4 Mo Kα radiation μ = 0.31 mm−1 T = 100 K 0.40 × 0.35 × 0.30 mm

Data collection

Bruker SMART APEX CCD diffractometer Absorption correction: multi-scan (SADABS; Bruker, 1998 ▸) T min = 0.947, T max = 0.953 26782 measured reflections 7693 independent reflections 4545 reflections with I > 2σ(I) R int = 0.077

Refinement

R[F 2 > 2σ(F 2)] = 0.055 wR(F 2) = 0.134 S = 0.97 7693 reflections 565 parameters H-atom parameters constrained Δρmax = 0.46 e Å−3 Δρmin = −0.39 e Å−3

Data collection: SMART (Bruker, 1998 ▸); cell refinement: SAINT-Plus (Bruker, 1998 ▸); data reduction: SAINT-Plus; 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, 2012 ▸) and CAMERON (Watkin et al., 1996 ▸); software used to prepare material for publication: WinGX (Farrugia, 2012 ▸). Crystal structure: contains datablock(s) global, I. DOI: 10.1107/S2056989015016229/hb7484sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S2056989015016229/hb7484Isup2.hkl Click here for additional data file. Supporting information file. DOI: 10.1107/S2056989015016229/hb7484Isup3.cml Click here for additional data file. . DOI: 10.1107/S2056989015016229/hb7484fig1.tif The mol­ecular structure of the title compound with displacement ellipsoids drawn at the 50% probability level. Click here for additional data file. . DOI: 10.1107/S2056989015016229/hb7484fig2.tif Unit-cell packing of the title compound showing C—H⋯O and N—H⋯Cl inter­actions with dotted lines. H-atoms not involved in hydrogen bonding have been excluded. Click here for additional data file. . DOI: 10.1107/S2056989015016229/hb7484fig3.tif Unit-cell packing depicting the inter­molecular C—H⋯π inter­actions with dotted lines. CCDC reference: 1421372 Additional supporting information: crystallographic information; 3D view; checkCIF report
C21H25N2O5S+·ClZ = 4
Mr = 452.94F(000) = 952
Triclinic, P1Dx = 1.373 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 9.9000 (6) ÅCell parameters from 7693 reflections
b = 11.8563 (7) Åθ = 2.1–25.0°
c = 19.0377 (11) ŵ = 0.31 mm1
α = 80.827 (2)°T = 100 K
β = 83.999 (2)°Block, colorless
γ = 86.071 (2)°0.40 × 0.35 × 0.30 mm
V = 2190.9 (2) Å3
Bruker SMART APEX CCD diffractometer7693 independent reflections
Radiation source: fine-focus sealed tube4545 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.077
ω scansθmax = 25.0°, θmin = 2.1°
Absorption correction: multi-scan (SADABS; Bruker, 1998)h = −11→11
Tmin = 0.947, Tmax = 0.953k = −14→14
26782 measured reflectionsl = −22→22
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.055Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.134H-atom parameters constrained
S = 0.97w = 1/[σ2(Fo2) + (0.0651P)2] where P = (Fo2 + 2Fc2)/3
7693 reflections(Δ/σ)max = 0.001
565 parametersΔρmax = 0.46 e Å3
0 restraintsΔρmin = −0.39 e Å3
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.
xyzUiso*/UeqOcc. (<1)
S1A0.55372 (9)0.82102 (7)0.06988 (5)0.0231 (2)
S1B1.58661 (9)0.56682 (7)0.41046 (5)0.0236 (2)
Cl1A0.26054 (8)0.98395 (7)0.07281 (4)0.0258 (2)
O3B1.1844 (2)0.61890 (18)0.07522 (11)0.0219 (6)
O3A0.9580 (2)0.78589 (18)0.40798 (11)0.0233 (6)
N1A0.5318 (3)1.0231 (2)0.11824 (14)0.0216 (7)
H1A0.44281.02050.11990.026*
N2A0.7460 (3)0.9302 (2)0.10151 (13)0.0183 (7)
O4A1.1459 (2)0.82817 (19)0.30585 (12)0.0274 (6)
O4B0.9931 (2)0.58909 (18)0.17602 (11)0.0248 (6)
O2A0.9189 (2)1.20032 (18)0.15574 (12)0.0255 (6)
N2B1.3831 (3)0.4659 (2)0.38338 (13)0.0183 (6)
C11A0.7792 (3)0.8628 (3)0.33236 (17)0.0200 (8)
H11A0.70910.84370.36960.024*
O5A0.6313 (2)0.61710 (19)0.01754 (13)0.0312 (6)
N1B1.5897 (3)0.3652 (2)0.36194 (14)0.0243 (7)
H1B1.67890.36580.35540.029*
C9A0.8485 (3)0.9473 (3)0.21133 (16)0.0165 (8)
O5B1.5264 (2)0.7675 (2)0.46921 (13)0.0330 (6)
C14A0.9846 (3)0.9182 (3)0.22318 (17)0.0192 (8)
H14A1.05480.93760.18610.023*
O1A0.7242 (2)1.2983 (2)0.18268 (13)0.0312 (6)
C11B1.3560 (3)0.5287 (3)0.15165 (17)0.0211 (8)
H11B1.42780.54240.11460.025*
C13B1.1196 (3)0.5473 (3)0.19403 (17)0.0188 (8)
C10A0.7475 (3)0.9186 (3)0.26544 (17)0.0200 (8)
H10A0.65500.93710.25710.024*
C2B1.5186 (3)0.4558 (3)0.38183 (17)0.0220 (8)
C17B1.3250 (3)0.5635 (3)0.40926 (16)0.0197 (8)
C5A0.8131 (3)1.0096 (3)0.13895 (17)0.0174 (8)
H5A0.89931.03300.10970.021*
C9B1.2801 (3)0.4514 (3)0.27319 (17)0.0181 (8)
C19B1.4225 (3)0.6284 (3)0.42452 (17)0.0204 (8)
C6A0.7208 (3)1.1153 (3)0.14404 (16)0.0185 (8)
C2A0.6109 (3)0.9356 (3)0.09945 (16)0.0185 (8)
C21B1.2888 (3)0.8079 (3)0.46114 (18)0.0283 (9)
H21A1.22980.77110.50170.042*
H21B1.24300.81440.41740.042*
H21C1.30810.88440.46950.042*
C14B1.1472 (3)0.4909 (3)0.26048 (17)0.0196 (8)
H14B1.07570.47890.29780.024*
C12A0.9138 (3)0.8359 (3)0.34386 (17)0.0197 (8)
C13A1.0166 (3)0.8614 (3)0.28869 (17)0.0184 (8)
C12B1.2245 (3)0.5658 (3)0.13895 (17)0.0178 (8)
C17A0.8121 (3)0.8373 (3)0.07323 (17)0.0197 (8)
C20A0.7354 (4)0.6582 (3)0.02851 (17)0.0237 (8)
C7A0.5872 (3)1.1187 (3)0.13521 (17)0.0200 (8)
C10B1.3838 (3)0.4711 (3)0.21867 (17)0.0220 (8)
H10B1.47450.44520.22700.026*
C5B1.3078 (3)0.3898 (3)0.34687 (17)0.0204 (8)
H5B1.21870.37400.37550.025*
C20B1.4185 (4)0.7379 (3)0.45335 (17)0.0257 (9)
C3A0.7829 (3)1.2151 (3)0.16276 (17)0.0202 (8)
C6B1.3908 (4)0.2779 (3)0.34601 (17)0.0218 (8)
C7B1.5250 (4)0.2687 (3)0.35115 (17)0.0252 (9)
C1A0.4850 (3)1.2162 (3)0.14002 (19)0.0277 (9)
H1A10.44661.21430.18970.042*
H1A20.41221.21000.11000.042*
H1A30.52911.28850.12350.042*
C19A0.7212 (3)0.7669 (3)0.05676 (17)0.0210 (8)
C16B0.8851 (3)0.5858 (3)0.23198 (18)0.0323 (10)
H16A0.86780.50610.25170.048*
H16B0.80270.62390.21290.048*
H16C0.91060.62530.26970.048*
C18A0.9630 (3)0.8299 (3)0.06129 (17)0.0222 (8)
H18A0.99980.77610.10010.033*
H18B0.99770.90560.06030.033*
H18C0.99080.80300.01560.033*
C15B1.2870 (3)0.6565 (3)0.01999 (18)0.0291 (9)
H15A1.34090.71230.03590.044*
H15B1.24430.6921−0.02290.044*
H15C1.34640.59080.00890.044*
C1B1.6186 (4)0.1652 (3)0.34882 (19)0.0339 (10)
H1B11.58670.10380.38640.051*
H1B21.71050.18360.35650.051*
H1B31.62020.14030.30210.051*
C18B1.1749 (3)0.5825 (3)0.41897 (18)0.0243 (9)
H18D1.14930.61790.46200.036*
H18E1.13230.50910.42420.036*
H18F1.14390.63320.37720.036*
C15A0.8599 (4)0.7449 (3)0.46416 (18)0.0349 (10)
H15D0.79580.80800.47490.052*
H15E0.90560.71350.50680.052*
H15F0.81050.68490.44960.052*
O2B1.1810 (3)0.1986 (2)0.35168 (14)0.0473 (8)
O1B1.3641 (3)0.0864 (2)0.32700 (16)0.0561 (9)
C16A1.2520 (3)0.8421 (3)0.24971 (19)0.0390 (11)
H16D1.23280.80070.21160.058*
H16E1.33830.81180.26800.058*
H16F1.25840.92360.23070.058*
C21A0.8716 (3)0.6000 (3)0.01681 (19)0.0322 (10)
H21D0.86230.5290−0.00200.048*
H21E0.91250.58240.06220.048*
H21F0.92980.6504−0.01760.048*
C8A0.9939 (3)1.2897 (3)0.17477 (19)0.0288 (9)
H8A10.96701.30050.22490.035*
H8A20.97651.36310.14320.035*
C4A1.1415 (3)1.2505 (3)0.16523 (19)0.0299 (9)
H4A11.15841.18140.19960.045*
H4A21.19801.31100.17340.045*
H4A31.16421.23360.11650.045*
C3B1.3152 (4)0.1763 (3)0.34012 (19)0.0322 (10)
C8B1.0940 (5)0.1052 (4)0.3517 (3)0.0723 (16)
H8B11.02460.12960.31780.087*
H8B21.14910.03960.33560.087*
C4B1.0291 (12)0.0708 (9)0.4207 (6)0.053 (3)0.72 (2)
H4B10.98330.13760.43900.080*0.72 (2)
H4B21.09690.03590.45270.080*0.72 (2)
H4B30.96190.01490.41820.080*0.72 (2)
C4B'0.975 (2)0.1130 (18)0.3817 (19)0.045 (8)0.28 (2)
H4B40.92860.04320.38010.068*0.28 (2)
H4B50.92500.17900.35670.068*0.28 (2)
H4B60.97850.12310.43150.068*0.28 (2)
Cl1B0.87338 (9)0.39271 (8)0.39496 (5)0.0349 (3)
U11U22U33U12U13U23
S1A0.0175 (5)0.0254 (5)0.0285 (5)−0.0026 (4)−0.0046 (4)−0.0088 (4)
S1B0.0202 (5)0.0268 (5)0.0254 (5)−0.0032 (4)−0.0064 (4)−0.0050 (4)
Cl1A0.0188 (5)0.0344 (6)0.0240 (5)−0.0049 (4)−0.0049 (4)−0.0001 (4)
O3B0.0190 (13)0.0284 (14)0.0164 (13)−0.0025 (11)0.0002 (11)0.0012 (11)
O3A0.0181 (13)0.0334 (15)0.0160 (13)−0.0020 (11)−0.0025 (11)0.0039 (11)
N1A0.0111 (15)0.0268 (18)0.0286 (17)0.0015 (13)−0.0022 (13)−0.0096 (14)
N2A0.0165 (16)0.0194 (16)0.0196 (16)0.0015 (13)−0.0049 (13)−0.0035 (13)
O4A0.0138 (13)0.0422 (16)0.0225 (14)0.0025 (11)−0.0031 (12)0.0056 (11)
O4B0.0176 (14)0.0328 (15)0.0211 (13)0.0024 (11)−0.0013 (11)0.0027 (11)
O2A0.0155 (13)0.0244 (14)0.0400 (15)−0.0045 (10)−0.0040 (12)−0.0127 (11)
N2B0.0184 (17)0.0186 (17)0.0177 (16)−0.0011 (13)−0.0037 (13)−0.0009 (13)
C11A0.020 (2)0.024 (2)0.0153 (19)−0.0058 (16)0.0018 (16)−0.0019 (15)
O5A0.0253 (15)0.0298 (15)0.0424 (16)−0.0015 (12)−0.0096 (13)−0.0130 (12)
N1B0.0200 (17)0.0266 (18)0.0275 (17)−0.0002 (14)−0.0050 (14)−0.0064 (14)
C9A0.0164 (19)0.0173 (19)0.0161 (19)−0.0024 (15)−0.0009 (16)−0.0036 (15)
O5B0.0264 (15)0.0367 (16)0.0397 (16)−0.0065 (12)−0.0062 (13)−0.0135 (13)
C14A0.0156 (19)0.022 (2)0.020 (2)−0.0028 (15)−0.0014 (16)−0.0027 (16)
O1A0.0237 (14)0.0276 (16)0.0455 (17)0.0033 (12)−0.0050 (13)−0.0161 (13)
C11B0.022 (2)0.023 (2)0.018 (2)−0.0075 (16)0.0024 (16)−0.0017 (16)
C13B0.018 (2)0.018 (2)0.021 (2)−0.0011 (15)−0.0058 (17)−0.0037 (15)
C10A0.0190 (19)0.021 (2)0.022 (2)0.0003 (15)−0.0073 (17)−0.0043 (16)
C2B0.020 (2)0.028 (2)0.018 (2)0.0010 (17)−0.0063 (17)−0.0013 (16)
C17B0.025 (2)0.021 (2)0.0122 (18)−0.0003 (16)−0.0020 (16)0.0006 (15)
C5A0.0119 (18)0.020 (2)0.0215 (19)−0.0001 (15)−0.0024 (16)−0.0062 (15)
C9B0.021 (2)0.019 (2)0.0145 (19)−0.0051 (15)−0.0007 (16)−0.0014 (15)
C19B0.019 (2)0.025 (2)0.0164 (19)−0.0001 (16)−0.0058 (16)−0.0009 (16)
C6A0.023 (2)0.018 (2)0.0150 (18)−0.0010 (15)−0.0026 (16)−0.0019 (15)
C2A0.018 (2)0.025 (2)0.0139 (19)−0.0012 (16)−0.0033 (16)−0.0035 (15)
C21B0.031 (2)0.028 (2)0.026 (2)0.0024 (18)−0.0024 (18)−0.0051 (17)
C14B0.018 (2)0.022 (2)0.019 (2)−0.0057 (15)0.0015 (16)−0.0055 (16)
C12A0.024 (2)0.019 (2)0.017 (2)−0.0028 (15)−0.0078 (17)−0.0004 (15)
C13A0.0152 (19)0.019 (2)0.020 (2)0.0012 (15)−0.0021 (17)−0.0009 (15)
C12B0.025 (2)0.0124 (19)0.017 (2)−0.0024 (15)−0.0081 (17)−0.0011 (15)
C17A0.0191 (19)0.020 (2)0.0196 (19)0.0037 (16)−0.0041 (16)−0.0025 (16)
C20A0.026 (2)0.026 (2)0.020 (2)−0.0009 (17)−0.0056 (17)−0.0050 (16)
C7A0.024 (2)0.018 (2)0.0186 (19)−0.0032 (16)−0.0040 (17)−0.0020 (15)
C10B0.018 (2)0.025 (2)0.025 (2)−0.0026 (16)−0.0078 (17)−0.0042 (16)
C5B0.021 (2)0.021 (2)0.019 (2)−0.0047 (16)−0.0042 (16)−0.0015 (15)
C20B0.033 (2)0.029 (2)0.014 (2)−0.0074 (18)0.0012 (18)0.0004 (16)
C3A0.020 (2)0.022 (2)0.0182 (19)0.0014 (16)−0.0044 (17)−0.0012 (16)
C6B0.031 (2)0.021 (2)0.0134 (19)−0.0059 (17)−0.0053 (17)−0.0001 (15)
C7B0.035 (2)0.026 (2)0.0145 (19)0.0016 (18)−0.0071 (17)−0.0030 (16)
C1A0.022 (2)0.028 (2)0.035 (2)0.0023 (17)−0.0065 (18)−0.0086 (18)
C19A0.020 (2)0.024 (2)0.020 (2)−0.0003 (16)−0.0057 (16)−0.0027 (16)
C16B0.021 (2)0.047 (3)0.028 (2)0.0037 (18)0.0008 (19)−0.0043 (19)
C18A0.0162 (19)0.026 (2)0.025 (2)0.0006 (15)−0.0026 (16)−0.0060 (16)
C15B0.031 (2)0.035 (2)0.021 (2)−0.0071 (18)−0.0069 (18)0.0009 (17)
C1B0.041 (2)0.029 (2)0.032 (2)0.0058 (19)−0.011 (2)−0.0054 (18)
C18B0.021 (2)0.029 (2)0.025 (2)0.0015 (16)−0.0047 (17)−0.0079 (17)
C15A0.030 (2)0.053 (3)0.018 (2)−0.010 (2)−0.0044 (19)0.0081 (18)
O2B0.0406 (18)0.0509 (19)0.057 (2)−0.0283 (15)0.0087 (15)−0.0242 (15)
O1B0.062 (2)0.0254 (18)0.086 (2)−0.0040 (15)−0.0212 (18)−0.0155 (16)
C16A0.016 (2)0.062 (3)0.031 (2)0.0072 (19)−0.0007 (19)0.010 (2)
C21A0.031 (2)0.032 (2)0.040 (2)0.0078 (18)−0.015 (2)−0.0190 (19)
C8A0.027 (2)0.025 (2)0.038 (2)−0.0073 (17)−0.0041 (19)−0.0133 (18)
C4A0.022 (2)0.029 (2)0.041 (2)−0.0012 (17)−0.0060 (19)−0.0137 (18)
C3B0.048 (3)0.028 (3)0.021 (2)−0.010 (2)−0.009 (2)0.0003 (18)
C8B0.071 (4)0.080 (4)0.078 (4)−0.057 (3)0.011 (3)−0.040 (3)
C4B0.055 (6)0.031 (5)0.072 (7)−0.016 (4)0.007 (5)−0.008 (4)
C4B'0.034 (12)0.013 (10)0.09 (2)−0.003 (8)−0.003 (12)−0.013 (10)
Cl1B0.0262 (5)0.0494 (7)0.0274 (5)−0.0088 (5)−0.0059 (4)0.0044 (5)
S1A—C2A1.702 (3)C12A—C13A1.396 (4)
S1A—C19A1.744 (3)C17A—C19A1.361 (4)
S1B—C2B1.706 (3)C17A—C18A1.485 (4)
S1B—C19B1.747 (3)C20A—C19A1.466 (4)
O3B—C12B1.360 (3)C20A—C21A1.484 (4)
O3B—C15B1.423 (4)C7A—C1A1.491 (4)
O3A—C12A1.371 (4)C10B—H10B0.9500
O3A—C15A1.416 (4)C5B—C6B1.514 (4)
N1A—C2A1.330 (4)C5B—H5B1.0000
N1A—C7A1.389 (4)C6B—C7B1.339 (4)
N1A—H1A0.8800C6B—C3B1.486 (5)
N2A—C2A1.339 (4)C7B—C1B1.490 (4)
N2A—C17A1.396 (4)C1A—H1A10.9800
N2A—C5A1.495 (4)C1A—H1A20.9800
O4A—C13A1.370 (4)C1A—H1A30.9800
O4A—C16A1.417 (4)C16B—H16A0.9800
O4B—C13B1.372 (4)C16B—H16B0.9800
O4B—C16B1.426 (4)C16B—H16C0.9800
O2A—C3A1.341 (4)C18A—H18A0.9800
O2A—C8A1.447 (3)C18A—H18B0.9800
N2B—C2B1.336 (4)C18A—H18C0.9800
N2B—C17B1.395 (4)C15B—H15A0.9800
N2B—C5B1.501 (4)C15B—H15B0.9800
C11A—C12A1.380 (4)C15B—H15C0.9800
C11A—C10A1.395 (4)C1B—H1B10.9800
C11A—H11A0.9500C1B—H1B20.9800
O5A—C20A1.220 (4)C1B—H1B30.9800
N1B—C2B1.328 (4)C18B—H18D0.9800
N1B—C7B1.401 (4)C18B—H18E0.9800
N1B—H1B0.8800C18B—H18F0.9800
C9A—C10A1.377 (4)C15A—H15D0.9800
C9A—C14A1.400 (4)C15A—H15E0.9800
C9A—C5A1.520 (4)C15A—H15F0.9800
O5B—C20B1.229 (4)O2B—C3B1.339 (4)
C14A—C13A1.376 (4)O2B—C8B1.449 (4)
C14A—H14A0.9500O1B—C3B1.192 (4)
O1A—C3A1.204 (4)C16A—H16D0.9800
C11B—C12B1.379 (4)C16A—H16E0.9800
C11B—C10B1.392 (4)C16A—H16F0.9800
C11B—H11B0.9500C21A—H21D0.9800
C13B—C14B1.378 (4)C21A—H21E0.9800
C13B—C12B1.399 (4)C21A—H21F0.9800
C10A—H10A0.9500C8A—C4A1.504 (4)
C17B—C19B1.356 (4)C8A—H8A10.9900
C17B—C18B1.485 (4)C8A—H8A20.9900
C5A—C6A1.510 (4)C4A—H4A10.9800
C5A—H5A1.0000C4A—H4A20.9800
C9B—C10B1.385 (4)C4A—H4A30.9800
C9B—C14B1.399 (4)C8B—C4B'1.259 (16)
C9B—C5B1.517 (4)C8B—C4B1.411 (9)
C19B—C20B1.485 (4)C8B—H8B10.9900
C6A—C7A1.347 (4)C8B—H8B20.9900
C6A—C3A1.478 (4)C4B—H4B10.9800
C21B—C20B1.488 (4)C4B—H4B20.9800
C21B—H21A0.9800C4B—H4B30.9800
C21B—H21B0.9800C4B'—H4B40.9800
C21B—H21C0.9800C4B'—H4B50.9800
C14B—H14B0.9500C4B'—H4B60.9800
C2A—S1A—C19A89.49 (15)O1A—C3A—C6A126.9 (3)
C2B—S1B—C19B88.95 (16)O2A—C3A—C6A110.1 (3)
C12B—O3B—C15B118.0 (2)C7B—C6B—C3B120.8 (3)
C12A—O3A—C15A118.4 (3)C7B—C6B—C5B122.6 (3)
C2A—N1A—C7A121.1 (3)C3B—C6B—C5B116.5 (3)
C2A—N1A—H1A119.5C6B—C7B—N1B118.5 (3)
C7A—N1A—H1A119.5C6B—C7B—C1B128.0 (3)
C2A—N2A—C17A113.5 (3)N1B—C7B—C1B113.5 (3)
C2A—N2A—C5A121.4 (3)C7A—C1A—H1A1109.5
C17A—N2A—C5A124.7 (3)C7A—C1A—H1A2109.5
C13A—O4A—C16A117.1 (3)H1A1—C1A—H1A2109.5
C13B—O4B—C16B117.6 (3)C7A—C1A—H1A3109.5
C3A—O2A—C8A116.4 (3)H1A1—C1A—H1A3109.5
C2B—N2B—C17B113.9 (3)H1A2—C1A—H1A3109.5
C2B—N2B—C5B120.8 (3)C17A—C19A—C20A133.4 (3)
C17B—N2B—C5B124.2 (3)C17A—C19A—S1A112.3 (3)
C12A—C11A—C10A119.2 (3)C20A—C19A—S1A114.3 (2)
C12A—C11A—H11A120.4O4B—C16B—H16A109.5
C10A—C11A—H11A120.4O4B—C16B—H16B109.5
C2B—N1B—C7B121.2 (3)H16A—C16B—H16B109.5
C2B—N1B—H1B119.4O4B—C16B—H16C109.5
C7B—N1B—H1B119.4H16A—C16B—H16C109.5
C10A—C9A—C14A119.6 (3)H16B—C16B—H16C109.5
C10A—C9A—C5A120.4 (3)C17A—C18A—H18A109.5
C14A—C9A—C5A119.9 (3)C17A—C18A—H18B109.5
C13A—C14A—C9A119.9 (3)H18A—C18A—H18B109.5
C13A—C14A—H14A120.0C17A—C18A—H18C109.5
C9A—C14A—H14A120.0H18A—C18A—H18C109.5
C12B—C11B—C10B120.1 (3)H18B—C18A—H18C109.5
C12B—C11B—H11B120.0O3B—C15B—H15A109.5
C10B—C11B—H11B120.0O3B—C15B—H15B109.5
O4B—C13B—C14B124.8 (3)H15A—C15B—H15B109.5
O4B—C13B—C12B115.0 (3)O3B—C15B—H15C109.5
C14B—C13B—C12B120.2 (3)H15A—C15B—H15C109.5
C9A—C10A—C11A120.8 (3)H15B—C15B—H15C109.5
C9A—C10A—H10A119.6C7B—C1B—H1B1109.5
C11A—C10A—H10A119.6C7B—C1B—H1B2109.5
N1B—C2B—N2B121.8 (3)H1B1—C1B—H1B2109.5
N1B—C2B—S1B124.8 (3)C7B—C1B—H1B3109.5
N2B—C2B—S1B113.4 (2)H1B1—C1B—H1B3109.5
C19B—C17B—N2B110.8 (3)H1B2—C1B—H1B3109.5
C19B—C17B—C18B128.9 (3)C17B—C18B—H18D109.5
N2B—C17B—C18B120.3 (3)C17B—C18B—H18E109.5
N2A—C5A—C6A109.0 (2)H18D—C18B—H18E109.5
N2A—C5A—C9A109.4 (2)C17B—C18B—H18F109.5
C6A—C5A—C9A113.1 (3)H18D—C18B—H18F109.5
N2A—C5A—H5A108.4H18E—C18B—H18F109.5
C6A—C5A—H5A108.4O3A—C15A—H15D109.5
C9A—C5A—H5A108.4O3A—C15A—H15E109.5
C10B—C9B—C14B119.3 (3)H15D—C15A—H15E109.5
C10B—C9B—C5B121.5 (3)O3A—C15A—H15F109.5
C14B—C9B—C5B119.2 (3)H15D—C15A—H15F109.5
C17B—C19B—C20B133.4 (3)H15E—C15A—H15F109.5
C17B—C19B—S1B112.9 (3)C3B—O2B—C8B116.9 (3)
C20B—C19B—S1B113.6 (2)O4A—C16A—H16D109.5
C7A—C6A—C3A120.8 (3)O4A—C16A—H16E109.5
C7A—C6A—C5A122.6 (3)H16D—C16A—H16E109.5
C3A—C6A—C5A116.5 (3)O4A—C16A—H16F109.5
N1A—C2A—N2A122.3 (3)H16D—C16A—H16F109.5
N1A—C2A—S1A124.5 (2)H16E—C16A—H16F109.5
N2A—C2A—S1A113.2 (2)C20A—C21A—H21D109.5
C20B—C21B—H21A109.5C20A—C21A—H21E109.5
C20B—C21B—H21B109.5H21D—C21A—H21E109.5
H21A—C21B—H21B109.5C20A—C21A—H21F109.5
C20B—C21B—H21C109.5H21D—C21A—H21F109.5
H21A—C21B—H21C109.5H21E—C21A—H21F109.5
H21B—C21B—H21C109.5O2A—C8A—C4A105.8 (3)
C13B—C14B—C9B120.2 (3)O2A—C8A—H8A1110.6
C13B—C14B—H14B119.9C4A—C8A—H8A1110.6
C9B—C14B—H14B119.9O2A—C8A—H8A2110.6
O3A—C12A—C11A124.6 (3)C4A—C8A—H8A2110.6
O3A—C12A—C13A115.0 (3)H8A1—C8A—H8A2108.7
C11A—C12A—C13A120.4 (3)C8A—C4A—H4A1109.5
O4A—C13A—C14A124.7 (3)C8A—C4A—H4A2109.5
O4A—C13A—C12A115.2 (3)H4A1—C4A—H4A2109.5
C14A—C13A—C12A120.0 (3)C8A—C4A—H4A3109.5
O3B—C12B—C11B125.3 (3)H4A1—C4A—H4A3109.5
O3B—C12B—C13B114.9 (3)H4A2—C4A—H4A3109.5
C11B—C12B—C13B119.7 (3)O1B—C3B—O2B123.3 (4)
C19A—C17A—N2A111.1 (3)O1B—C3B—C6B126.1 (4)
C19A—C17A—C18A129.0 (3)O2B—C3B—C6B110.5 (3)
N2A—C17A—C18A119.8 (3)C4B'—C8B—C4B43.9 (13)
O5A—C20A—C19A117.3 (3)C4B'—C8B—O2B117.6 (8)
O5A—C20A—C21A122.3 (3)C4B—C8B—O2B110.9 (4)
C19A—C20A—C21A120.3 (3)C4B'—C8B—H8B166.5
C6A—C7A—N1A119.4 (3)C4B—C8B—H8B1109.5
C6A—C7A—C1A128.0 (3)O2B—C8B—H8B1109.5
N1A—C7A—C1A112.6 (3)C4B'—C8B—H8B2131.7
C9B—C10B—C11B120.5 (3)C4B—C8B—H8B2109.5
C9B—C10B—H10B119.8O2B—C8B—H8B2109.5
C11B—C10B—H10B119.8H8B1—C8B—H8B2108.0
N2B—C5B—C6B108.0 (3)C8B—C4B—H4B1109.5
N2B—C5B—C9B109.2 (2)C8B—C4B—H4B2109.5
C6B—C5B—C9B113.9 (3)C8B—C4B—H4B3109.5
N2B—C5B—H5B108.5C8B—C4B'—H4B4109.5
C6B—C5B—H5B108.5C8B—C4B'—H4B5109.5
C9B—C5B—H5B108.5H4B4—C4B'—H4B5109.5
O5B—C20B—C19B116.9 (3)C8B—C4B'—H4B6109.5
O5B—C20B—C21B122.5 (3)H4B4—C4B'—H4B6109.5
C19B—C20B—C21B120.6 (3)H4B5—C4B'—H4B6109.5
O1A—C3A—O2A123.0 (3)
C10A—C9A—C14A—C13A−0.1 (5)O4B—C13B—C12B—O3B−2.2 (4)
C5A—C9A—C14A—C13A−179.8 (3)C14B—C13B—C12B—O3B178.0 (3)
C16B—O4B—C13B—C14B7.6 (4)O4B—C13B—C12B—C11B179.1 (3)
C16B—O4B—C13B—C12B−172.3 (3)C14B—C13B—C12B—C11B−0.8 (5)
C14A—C9A—C10A—C11A1.2 (5)C2A—N2A—C17A—C19A−6.3 (4)
C5A—C9A—C10A—C11A−179.1 (3)C5A—N2A—C17A—C19A166.5 (3)
C12A—C11A—C10A—C9A−0.3 (5)C2A—N2A—C17A—C18A170.4 (3)
C7B—N1B—C2B—N2B−9.0 (5)C5A—N2A—C17A—C18A−16.7 (5)
C7B—N1B—C2B—S1B168.6 (2)C3A—C6A—C7A—N1A−179.4 (3)
C17B—N2B—C2B—N1B176.7 (3)C5A—C6A—C7A—N1A−2.3 (5)
C5B—N2B—C2B—N1B−14.4 (5)C3A—C6A—C7A—C1A1.8 (5)
C17B—N2B—C2B—S1B−1.1 (4)C5A—C6A—C7A—C1A178.9 (3)
C5B—N2B—C2B—S1B167.7 (2)C2A—N1A—C7A—C6A−10.8 (5)
C19B—S1B—C2B—N1B−178.0 (3)C2A—N1A—C7A—C1A168.1 (3)
C19B—S1B—C2B—N2B−0.2 (3)C14B—C9B—C10B—C11B−0.6 (5)
C2B—N2B—C17B—C19B2.3 (4)C5B—C9B—C10B—C11B−179.5 (3)
C5B—N2B—C17B—C19B−166.1 (3)C12B—C11B—C10B—C9B−0.5 (5)
C2B—N2B—C17B—C18B−175.7 (3)C2B—N2B—C5B—C6B28.3 (4)
C5B—N2B—C17B—C18B15.9 (4)C17B—N2B—C5B—C6B−164.0 (3)
C2A—N2A—C5A—C6A−22.7 (4)C2B—N2B—C5B—C9B−96.1 (3)
C17A—N2A—C5A—C6A164.9 (3)C17B—N2B—C5B—C9B71.6 (4)
C2A—N2A—C5A—C9A101.4 (3)C10B—C9B—C5B—N2B70.5 (4)
C17A—N2A—C5A—C9A−70.9 (4)C14B—C9B—C5B—N2B−108.3 (3)
C10A—C9A—C5A—N2A−70.4 (4)C10B—C9B—C5B—C6B−50.4 (4)
C14A—C9A—C5A—N2A109.3 (3)C14B—C9B—C5B—C6B130.8 (3)
C10A—C9A—C5A—C6A51.4 (4)C17B—C19B—C20B—O5B171.4 (3)
C14A—C9A—C5A—C6A−128.9 (3)S1B—C19B—C20B—O5B−5.7 (4)
N2B—C17B—C19B—C20B−179.4 (3)C17B—C19B—C20B—C21B−9.5 (6)
C18B—C17B—C19B—C20B−1.6 (6)S1B—C19B—C20B—C21B173.4 (2)
N2B—C17B—C19B—S1B−2.4 (4)C8A—O2A—C3A—O1A1.1 (5)
C18B—C17B—C19B—S1B175.4 (3)C8A—O2A—C3A—C6A−177.9 (3)
C2B—S1B—C19B—C17B1.5 (3)C7A—C6A—C3A—O1A12.5 (5)
C2B—S1B—C19B—C20B179.2 (3)C5A—C6A—C3A—O1A−164.8 (3)
N2A—C5A—C6A—C7A17.6 (4)C7A—C6A—C3A—O2A−168.6 (3)
C9A—C5A—C6A—C7A−104.3 (3)C5A—C6A—C3A—O2A14.1 (4)
N2A—C5A—C6A—C3A−165.2 (3)N2B—C5B—C6B—C7B−23.1 (4)
C9A—C5A—C6A—C3A72.9 (3)C9B—C5B—C6B—C7B98.5 (4)
C7A—N1A—C2A—N2A5.6 (5)N2B—C5B—C6B—C3B156.1 (3)
C7A—N1A—C2A—S1A−173.7 (2)C9B—C5B—C6B—C3B−82.4 (4)
C17A—N2A—C2A—N1A−174.1 (3)C3B—C6B—C7B—N1B−175.3 (3)
C5A—N2A—C2A—N1A12.8 (5)C5B—C6B—C7B—N1B3.8 (5)
C17A—N2A—C2A—S1A5.3 (4)C3B—C6B—C7B—C1B2.9 (5)
C5A—N2A—C2A—S1A−167.9 (2)C5B—C6B—C7B—C1B−178.0 (3)
C19A—S1A—C2A—N1A177.2 (3)C2B—N1B—C7B—C6B14.3 (5)
C19A—S1A—C2A—N2A−2.2 (3)C2B—N1B—C7B—C1B−164.2 (3)
O4B—C13B—C14B—C9B179.8 (3)N2A—C17A—C19A—C20A−177.7 (3)
C12B—C13B—C14B—C9B−0.3 (5)C18A—C17A—C19A—C20A5.9 (6)
C10B—C9B—C14B—C13B1.0 (5)N2A—C17A—C19A—S1A4.6 (4)
C5B—C9B—C14B—C13B179.9 (3)C18A—C17A—C19A—S1A−171.8 (3)
C15A—O3A—C12A—C11A8.8 (5)O5A—C20A—C19A—C17A−178.0 (3)
C15A—O3A—C12A—C13A−172.5 (3)C21A—C20A—C19A—C17A4.3 (6)
C10A—C11A—C12A—O3A177.0 (3)O5A—C20A—C19A—S1A−0.3 (4)
C10A—C11A—C12A—C13A−1.7 (5)C21A—C20A—C19A—S1A−178.1 (3)
C16A—O4A—C13A—C14A−7.3 (5)C2A—S1A—C19A—C17A−1.5 (3)
C16A—O4A—C13A—C12A174.0 (3)C2A—S1A—C19A—C20A−179.7 (3)
C9A—C14A—C13A—O4A179.5 (3)C3A—O2A—C8A—C4A177.7 (3)
C9A—C14A—C13A—C12A−1.9 (5)C8B—O2B—C3B—O1B3.4 (6)
O3A—C12A—C13A—O4A2.8 (4)C8B—O2B—C3B—C6B−176.6 (3)
C11A—C12A—C13A—O4A−178.5 (3)C7B—C6B—C3B—O1B−13.9 (6)
O3A—C12A—C13A—C14A−176.0 (3)C5B—C6B—C3B—O1B166.9 (3)
C11A—C12A—C13A—C14A2.8 (5)C7B—C6B—C3B—O2B166.1 (3)
C15B—O3B—C12B—C11B−10.9 (4)C5B—C6B—C3B—O2B−13.0 (4)
C15B—O3B—C12B—C13B170.4 (3)C3B—O2B—C8B—C4B'160 (2)
C10B—C11B—C12B—O3B−177.4 (3)C3B—O2B—C8B—C4B112.4 (8)
C10B—C11B—C12B—C13B1.2 (5)
D—H···AD—HH···AD···AD—H···A
N1A—H1A···Cl1A0.882.202.993 (1)151
N1B—H1B···Cl1Bi0.882.202.992 (2)150
C11A—H11A···O5Bii0.952.583.523 (1)173
C15B—H15C···O5Aiii0.982.583.456 (6)148
C21A—H21D···O3Biii0.982.503.459 (6)166
C4A—H4A2···Cg30.982.633.551 (2)157
Table 1

Hydrogen-bond geometry (, )

Cg3 is the centroid of the C9BC14B ring.

DHA DHHA D A DHA
N1AH1ACl1A 0.882.202.993(1)151
N1BH1BCl1B i 0.882.202.992(2)150
C11AH11AO5B ii 0.952.583.523(1)173
C15BH15CO5A iii 0.982.583.456(6)148
C21AH21DO3B iii 0.982.503.459(6)166
C4AH4A2Cg30.982.633.551(2)157

Symmetry codes: (i) ; (ii) ; (iii) .

  4 in total

1.  Convenient one pot synthesis of some novel derivatives of thiazolo[2,3-b]dihydropyrimidinone possessing 4-methylthiophenyl moiety and evaluation of their antibacterial and antifungal activities.

Authors:  Mithun Ashok; Bantwal Shivarama Holla; Nalilu Suchetha Kumari
Journal:  Eur J Med Chem       Date:  2006-10-27       Impact factor: 6.514

2.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

3.  Calcium entry blockers and activators: conformational and structural determinants of dihydropyrimidine calcium channel modulators.

Authors:  G C Rovnyak; S D Kimball; B Beyer; G Cucinotta; J D DiMarco; J Gougoutas; A Hedberg; M Malley; J P McCarthy; R Zhang
Journal:  J Med Chem       Date:  1995-01-06       Impact factor: 7.446

4.  Crystal structure of 2-acetyl-5-(3-methoxyphenyl)-3,7-dimethyl-5H-1,3-thiazolo[3,2-a]pyrimidine-6-carboxylate.

Authors:  N L Prasad; M S Krishnamurthy; H Nagarajaiah; Noor Shahina Begum
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2014-10-29
  4 in total

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