organic compounds
Ethyl 2-[5-(4-fluorophenyl)pyridin-3-yl]-1-[3-(2-oxopyrrolidin-1-yl)propyl]-1H-benzimidazole-5-carboxylate
aInstitute for Research in Molecular Medicine, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, and bX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
*Correspondence e-mail: arazaki@usm.my
In the title compound, C28H27FN4O3·H2O, the benzimidazole ring system is essentially planar with a maximum deviation of 0.028 (1) Å. It makes dihedral angles of 47.59 (5) and 60.31 (5)°, respectively, with the pyridine and benzene rings, which make a dihedral angle of 22.58 (6)° with each other. The pyrrolidine ring shows an with one of the methylene C atoms as the flap. In the crystal, the components are connected into a tape along the b-axis direction through O—H⋯O and O—H⋯N hydrogen bonds and a π–π interaction between the pyridine and benzene rings [centroid–centroid distance of 3.685 (8) Å]. The tapes are further linked into layers parallel to the ab plane by C—H⋯O and C—H⋯F interactions.
Related literature
For biological applications of benzimidazole derivatives, see: Tanious et al. (2004); Coburn et al. (1987); Rao et al. (2002). For a related structure, see: Yoon et al. (2012).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536813014177/is5275sup1.cif
contains datablocks I, New_Global_Publ_Block. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536813014177/is5275Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536813014177/is5275Isup3.cml
Ethyl 3-amino-4-(3-(2-oxopyrrolidin-1-yl)propylamino)benzoate (0.84 mmol) and sodium metabisulfite adduct of 5-(4-fluorophenyl)nicotinaldehyde (1.68 mmol) were dissolved in DMF. The reaction mixture was reflux at 130 °C for 2 hrs. After completion, the reaction mixture was diluted in Ethyl acetate (20 ml) and washed with water (20 ml). The organic layer was collected, dried over Na2SO4 and the evaporated in vacuo to yield the product. The product was recrystallized from ethyl acetate.
H atom in water molecules were located from difference Fourier maps and freely refined. The remaining H atoms were positioned geometrically and refined using a riding model with with C—H = 0.95–0.99 Å and Uiso(H) = 1.2Ueq(C) or 1.5Ueq(C) for methyl H atoms. A rotating group model was applied to the methyl group.
The benzimidazole core is a key building block for many biologically active compounds that play crucial roles in the function of a number of pharmacologically important molecules (Tanious et al., 2004). Substituted benzimidazoles with a wide range of activities such as antibacterial (Coburn et al., 1987) and anti-HIV (Rao et al., 2002) have been reported. As part of our ongoing structural studies of benzimidazole derivatives (Yoon et al., 2012), we now report the structure of the title compound.
In the title compound (Fig. 1), the benzimidazole ring (N1/N2/C1–C7) is planar with a maximum deviation of 0.028 (1) Å for atom N1. It makes dihedral angles of 47.69 (5) and 60.31 (5)°, respectively, with the pyridine (N3/C8–C12) and the benzene (C13–C18) rings. These two rings make a dihedral angle of 22.58 (6)° with each other. The pyrrolidine ring show a sign of φ = 81.9 (3)°.
with atom C23 at the flap, and with puckering parameters Q = 0.2695 (16) Å andIn the crystal, the main molecule is connected to the water through O1W—H1W1···O3 and O1W—H2W1···N2i hydrogen bonds (Table 1). The molecules are further linked into a two-dimensional layer parallel to the ab plane by C14—H14A···O1Wii, C17—H17A···O2iii, C27—H27A···O2iv and C28—H28B···F1v interactions (Table 1). A π–π interaction observed between the pyridine (N3/C8–C12) and the benzene (C1–C6) rings with a centroid-centroid distance of 3.685 (8) Å (1 - x, 1/2 + y, 1/2 - z) further stabilizes the crystal structure.
For biological applications of benzimidazole derivatives, see: Tanious et al. (2004); Coburn et al. (1987); Rao et al. (2002). For a related structure, see: Yoon et al. (2012).
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).Fig. 1. The asymmetric unit of the title compound, showing 50% probability displacement ellipsoids. | |
Fig. 2. A crystal packing view of the title compound. Dashed lines indicate hydrogen bonds. H atoms not involved in the hydrogen bond interactions have been omitted for clarity. |
C28H27FN4O3·H2O | F(000) = 1064 |
Mr = 504.55 | Dx = 1.363 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 7659 reflections |
a = 16.0640 (15) Å | θ = 3.0–30.3° |
b = 7.6562 (7) Å | µ = 0.10 mm−1 |
c = 20.1991 (19) Å | T = 100 K |
β = 98.163 (2)° | Block, brown |
V = 2459.1 (4) Å3 | 0.35 × 0.33 × 0.21 mm |
Z = 4 |
Bruker APEX Duo CCD area-detector diffractometer | 6502 independent reflections |
Radiation source: fine-focus sealed tube | 5002 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.037 |
φ and ω scans | θmax = 29.0°, θmin = 1.3° |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | h = −21→21 |
Tmin = 0.967, Tmax = 0.980 | k = −8→10 |
24841 measured reflections | l = −25→27 |
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)] = 0.042 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.113 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0504P)2 + 0.8415P] where P = (Fo2 + 2Fc2)/3 |
6502 reflections | (Δ/σ)max < 0.001 |
343 parameters | Δρmax = 0.31 e Å−3 |
0 restraints | Δρmin = −0.25 e Å−3 |
C28H27FN4O3·H2O | V = 2459.1 (4) Å3 |
Mr = 504.55 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 16.0640 (15) Å | µ = 0.10 mm−1 |
b = 7.6562 (7) Å | T = 100 K |
c = 20.1991 (19) Å | 0.35 × 0.33 × 0.21 mm |
β = 98.163 (2)° |
Bruker APEX Duo CCD area-detector diffractometer | 6502 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 5002 reflections with I > 2σ(I) |
Tmin = 0.967, Tmax = 0.980 | Rint = 0.037 |
24841 measured reflections |
R[F2 > 2σ(F2)] = 0.042 | 0 restraints |
wR(F2) = 0.113 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | Δρmax = 0.31 e Å−3 |
6502 reflections | Δρmin = −0.25 e Å−3 |
343 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 | ||
F1 | 0.00660 (5) | 1.18506 (11) | 0.02501 (4) | 0.0277 (2) | |
O1 | 0.89089 (5) | 0.94479 (13) | 0.30464 (5) | 0.0235 (2) | |
O2 | 0.92597 (6) | 0.83605 (14) | 0.20908 (5) | 0.0283 (2) | |
O3 | 0.29289 (7) | 0.45959 (15) | 0.01770 (6) | 0.0368 (3) | |
N1 | 0.52774 (6) | 0.76622 (14) | 0.16989 (5) | 0.0155 (2) | |
N2 | 0.56706 (6) | 0.87671 (14) | 0.27305 (5) | 0.0170 (2) | |
N3 | 0.31735 (7) | 0.78858 (16) | 0.31867 (6) | 0.0205 (2) | |
N4 | 0.32987 (6) | 0.73537 (15) | −0.01162 (5) | 0.0182 (2) | |
C1 | 0.61471 (7) | 0.77837 (16) | 0.17809 (6) | 0.0160 (2) | |
C2 | 0.67326 (8) | 0.73151 (17) | 0.13630 (7) | 0.0184 (3) | |
H2A | 0.6568 | 0.6795 | 0.0938 | 0.022* | |
C3 | 0.75670 (8) | 0.76529 (17) | 0.16049 (7) | 0.0193 (3) | |
H3A | 0.7987 | 0.7358 | 0.1337 | 0.023* | |
C4 | 0.78115 (7) | 0.84195 (17) | 0.22350 (7) | 0.0178 (3) | |
C5 | 0.72238 (7) | 0.88486 (17) | 0.26539 (7) | 0.0170 (2) | |
H5A | 0.7390 | 0.9360 | 0.3081 | 0.020* | |
C6 | 0.63811 (7) | 0.84952 (16) | 0.24192 (6) | 0.0159 (2) | |
C7 | 0.50329 (7) | 0.82625 (16) | 0.22826 (6) | 0.0156 (2) | |
C8 | 0.41508 (7) | 0.83587 (16) | 0.24061 (6) | 0.0158 (2) | |
C9 | 0.39447 (8) | 0.77708 (17) | 0.30149 (6) | 0.0182 (3) | |
H9A | 0.4376 | 0.7260 | 0.3325 | 0.022* | |
C10 | 0.25739 (8) | 0.85882 (18) | 0.27371 (7) | 0.0191 (3) | |
H10A | 0.2025 | 0.8688 | 0.2857 | 0.023* | |
C11 | 0.26951 (7) | 0.91840 (16) | 0.21053 (6) | 0.0160 (2) | |
C12 | 0.35139 (7) | 0.90683 (16) | 0.19441 (6) | 0.0163 (2) | |
H12A | 0.3634 | 0.9471 | 0.1523 | 0.020* | |
C13 | 0.19944 (7) | 0.99304 (16) | 0.16271 (6) | 0.0166 (2) | |
C14 | 0.21604 (8) | 1.10604 (17) | 0.11189 (7) | 0.0187 (3) | |
H14A | 0.2726 | 1.1379 | 0.1089 | 0.022* | |
C15 | 0.15166 (8) | 1.17301 (18) | 0.06552 (7) | 0.0203 (3) | |
H15A | 0.1634 | 1.2498 | 0.0311 | 0.024* | |
C16 | 0.07029 (8) | 1.12430 (18) | 0.07115 (7) | 0.0206 (3) | |
C17 | 0.05031 (8) | 1.01864 (18) | 0.12132 (7) | 0.0223 (3) | |
H17A | −0.0066 | 0.9914 | 0.1247 | 0.027* | |
C18 | 0.11554 (8) | 0.95205 (18) | 0.16728 (7) | 0.0201 (3) | |
H18A | 0.1029 | 0.8778 | 0.2022 | 0.024* | |
C19 | 0.47650 (7) | 0.68575 (17) | 0.11211 (6) | 0.0162 (2) | |
H19A | 0.4186 | 0.6689 | 0.1223 | 0.019* | |
H19B | 0.4999 | 0.5693 | 0.1040 | 0.019* | |
C20 | 0.47344 (8) | 0.79563 (18) | 0.04903 (6) | 0.0188 (3) | |
H20A | 0.5313 | 0.8123 | 0.0385 | 0.023* | |
H20B | 0.4500 | 0.9121 | 0.0569 | 0.023* | |
C21 | 0.41947 (7) | 0.70879 (19) | −0.01050 (7) | 0.0206 (3) | |
H21A | 0.4361 | 0.7557 | −0.0524 | 0.025* | |
H21B | 0.4312 | 0.5818 | −0.0093 | 0.025* | |
C22 | 0.29024 (8) | 0.90041 (19) | −0.03556 (7) | 0.0236 (3) | |
H22A | 0.3130 | 0.9429 | −0.0757 | 0.028* | |
H22B | 0.2988 | 0.9913 | −0.0004 | 0.028* | |
C23 | 0.19705 (9) | 0.8521 (2) | −0.05240 (8) | 0.0296 (3) | |
H23A | 0.1606 | 0.9487 | −0.0410 | 0.035* | |
H23B | 0.1824 | 0.8238 | −0.1005 | 0.035* | |
C24 | 0.18793 (9) | 0.6929 (2) | −0.00927 (9) | 0.0352 (4) | |
H24A | 0.1457 | 0.6107 | −0.0322 | 0.042* | |
H24B | 0.1709 | 0.7270 | 0.0341 | 0.042* | |
C25 | 0.27508 (8) | 0.6116 (2) | 0.00055 (7) | 0.0245 (3) | |
C26 | 0.87277 (8) | 0.87268 (17) | 0.24398 (7) | 0.0204 (3) | |
C27 | 0.97999 (8) | 0.9758 (2) | 0.32679 (8) | 0.0273 (3) | |
H27A | 1.0033 | 1.0541 | 0.2950 | 0.033* | |
H27B | 1.0113 | 0.8642 | 0.3291 | 0.033* | |
C28 | 0.98829 (9) | 1.0583 (2) | 0.39429 (8) | 0.0316 (3) | |
H28A | 1.0470 | 1.0917 | 0.4084 | 0.047* | |
H28B | 0.9707 | 0.9750 | 0.4264 | 0.047* | |
H28C | 0.9526 | 1.1625 | 0.3924 | 0.047* | |
O1W | 0.41361 (6) | 0.24454 (14) | 0.08944 (6) | 0.0233 (2) | |
H1W1 | 0.3772 (12) | 0.315 (3) | 0.0644 (10) | 0.043 (5)* | |
H2W1 | 0.4181 (12) | 0.291 (3) | 0.1303 (12) | 0.050 (6)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
F1 | 0.0204 (4) | 0.0310 (5) | 0.0289 (5) | 0.0040 (3) | −0.0065 (3) | 0.0031 (4) |
O1 | 0.0147 (4) | 0.0285 (5) | 0.0262 (5) | −0.0030 (4) | −0.0004 (4) | −0.0006 (4) |
O2 | 0.0175 (4) | 0.0359 (6) | 0.0329 (6) | −0.0010 (4) | 0.0080 (4) | −0.0008 (5) |
O3 | 0.0320 (6) | 0.0305 (6) | 0.0450 (7) | −0.0029 (4) | −0.0040 (5) | 0.0121 (5) |
N1 | 0.0140 (5) | 0.0197 (5) | 0.0124 (5) | 0.0003 (4) | 0.0010 (4) | 0.0001 (4) |
N2 | 0.0157 (5) | 0.0201 (5) | 0.0153 (5) | 0.0006 (4) | 0.0021 (4) | 0.0003 (4) |
N3 | 0.0188 (5) | 0.0269 (6) | 0.0161 (6) | −0.0010 (4) | 0.0030 (4) | 0.0006 (5) |
N4 | 0.0148 (5) | 0.0238 (6) | 0.0155 (5) | 0.0014 (4) | 0.0005 (4) | −0.0001 (4) |
C1 | 0.0148 (5) | 0.0173 (6) | 0.0155 (6) | 0.0005 (4) | 0.0011 (4) | 0.0031 (5) |
C2 | 0.0191 (6) | 0.0211 (6) | 0.0151 (6) | 0.0021 (5) | 0.0027 (5) | 0.0015 (5) |
C3 | 0.0182 (6) | 0.0211 (6) | 0.0197 (7) | 0.0028 (5) | 0.0059 (5) | 0.0043 (5) |
C4 | 0.0154 (5) | 0.0180 (6) | 0.0196 (7) | 0.0009 (4) | 0.0012 (5) | 0.0046 (5) |
C5 | 0.0166 (6) | 0.0177 (6) | 0.0160 (6) | −0.0002 (4) | −0.0006 (4) | 0.0016 (5) |
C6 | 0.0161 (5) | 0.0163 (6) | 0.0153 (6) | 0.0008 (4) | 0.0020 (4) | 0.0022 (5) |
C7 | 0.0163 (5) | 0.0168 (6) | 0.0135 (6) | 0.0011 (4) | 0.0017 (4) | 0.0022 (5) |
C8 | 0.0150 (5) | 0.0178 (6) | 0.0147 (6) | −0.0013 (4) | 0.0019 (4) | −0.0030 (5) |
C9 | 0.0187 (6) | 0.0224 (6) | 0.0134 (6) | 0.0000 (5) | 0.0013 (4) | −0.0006 (5) |
C10 | 0.0161 (6) | 0.0238 (6) | 0.0181 (6) | −0.0015 (5) | 0.0043 (5) | −0.0014 (5) |
C11 | 0.0150 (5) | 0.0170 (6) | 0.0158 (6) | −0.0014 (4) | 0.0014 (4) | −0.0022 (5) |
C12 | 0.0168 (5) | 0.0184 (6) | 0.0136 (6) | −0.0011 (4) | 0.0021 (4) | −0.0008 (5) |
C13 | 0.0151 (5) | 0.0188 (6) | 0.0157 (6) | −0.0004 (4) | 0.0014 (4) | −0.0037 (5) |
C14 | 0.0157 (5) | 0.0211 (6) | 0.0195 (7) | −0.0008 (4) | 0.0030 (5) | −0.0020 (5) |
C15 | 0.0211 (6) | 0.0221 (6) | 0.0178 (7) | 0.0015 (5) | 0.0028 (5) | 0.0002 (5) |
C16 | 0.0171 (6) | 0.0226 (6) | 0.0205 (7) | 0.0042 (5) | −0.0031 (5) | −0.0027 (5) |
C17 | 0.0146 (5) | 0.0266 (7) | 0.0253 (7) | −0.0002 (5) | 0.0009 (5) | −0.0011 (6) |
C18 | 0.0169 (6) | 0.0236 (7) | 0.0199 (7) | −0.0019 (5) | 0.0026 (5) | 0.0006 (5) |
C19 | 0.0162 (5) | 0.0188 (6) | 0.0131 (6) | −0.0005 (4) | 0.0007 (4) | −0.0013 (5) |
C20 | 0.0162 (6) | 0.0258 (7) | 0.0141 (6) | −0.0028 (5) | 0.0007 (4) | 0.0010 (5) |
C21 | 0.0143 (5) | 0.0335 (7) | 0.0140 (6) | 0.0016 (5) | 0.0020 (4) | −0.0020 (6) |
C22 | 0.0247 (6) | 0.0231 (7) | 0.0225 (7) | 0.0036 (5) | 0.0009 (5) | 0.0001 (6) |
C23 | 0.0215 (6) | 0.0345 (8) | 0.0306 (8) | 0.0084 (6) | −0.0038 (6) | −0.0057 (7) |
C24 | 0.0166 (6) | 0.0444 (9) | 0.0438 (10) | −0.0016 (6) | 0.0016 (6) | 0.0020 (8) |
C25 | 0.0200 (6) | 0.0298 (7) | 0.0224 (7) | −0.0022 (5) | −0.0016 (5) | 0.0020 (6) |
C26 | 0.0171 (6) | 0.0187 (6) | 0.0257 (7) | −0.0005 (5) | 0.0034 (5) | 0.0047 (5) |
C27 | 0.0143 (6) | 0.0300 (7) | 0.0361 (9) | −0.0045 (5) | −0.0017 (5) | 0.0020 (6) |
C28 | 0.0267 (7) | 0.0277 (8) | 0.0370 (9) | −0.0032 (6) | −0.0068 (6) | 0.0037 (7) |
O1W | 0.0215 (5) | 0.0276 (5) | 0.0209 (5) | −0.0001 (4) | 0.0031 (4) | −0.0023 (4) |
F1—C16 | 1.3642 (14) | C13—C18 | 1.3996 (17) |
O1—C26 | 1.3378 (17) | C14—C15 | 1.3910 (18) |
O1—C27 | 1.4571 (15) | C14—H14A | 0.9500 |
O2—C26 | 1.2152 (16) | C15—C16 | 1.3793 (18) |
O3—C25 | 1.2358 (18) | C15—H15A | 0.9500 |
N1—C7 | 1.3737 (16) | C16—C17 | 1.370 (2) |
N1—C1 | 1.3864 (15) | C17—C18 | 1.3939 (18) |
N1—C19 | 1.4652 (15) | C17—H17A | 0.9500 |
N2—C7 | 1.3244 (15) | C18—H18A | 0.9500 |
N2—C6 | 1.3946 (16) | C19—C20 | 1.5216 (18) |
N3—C9 | 1.3362 (16) | C19—H19A | 0.9900 |
N3—C10 | 1.3391 (17) | C19—H19B | 0.9900 |
N4—C25 | 1.3398 (18) | C20—C21 | 1.5309 (18) |
N4—C21 | 1.4506 (15) | C20—H20A | 0.9900 |
N4—C22 | 1.4658 (17) | C20—H20B | 0.9900 |
C1—C2 | 1.3968 (18) | C21—H21A | 0.9900 |
C1—C6 | 1.4010 (18) | C21—H21B | 0.9900 |
C2—C3 | 1.3844 (17) | C22—C23 | 1.5327 (19) |
C2—H2A | 0.9500 | C22—H22A | 0.9900 |
C3—C4 | 1.4060 (19) | C22—H22B | 0.9900 |
C3—H3A | 0.9500 | C23—C24 | 1.517 (2) |
C4—C5 | 1.3934 (18) | C23—H23A | 0.9900 |
C4—C26 | 1.4899 (17) | C23—H23B | 0.9900 |
C5—C6 | 1.3959 (16) | C24—C25 | 1.519 (2) |
C5—H5A | 0.9500 | C24—H24A | 0.9900 |
C7—C8 | 1.4751 (16) | C24—H24B | 0.9900 |
C8—C9 | 1.3928 (18) | C27—C28 | 1.491 (2) |
C8—C12 | 1.3934 (17) | C27—H27A | 0.9900 |
C9—H9A | 0.9500 | C27—H27B | 0.9900 |
C10—C11 | 1.3947 (18) | C28—H28A | 0.9800 |
C10—H10A | 0.9500 | C28—H28B | 0.9800 |
C11—C12 | 1.4021 (17) | C28—H28C | 0.9800 |
C11—C13 | 1.4891 (17) | O1W—H1W1 | 0.90 (2) |
C12—H12A | 0.9500 | O1W—H2W1 | 0.89 (2) |
C13—C14 | 1.3968 (19) | ||
C26—O1—C27 | 115.15 (11) | C18—C17—H17A | 120.8 |
C7—N1—C1 | 106.33 (10) | C17—C18—C13 | 120.93 (13) |
C7—N1—C19 | 128.87 (10) | C17—C18—H18A | 119.5 |
C1—N1—C19 | 124.47 (10) | C13—C18—H18A | 119.5 |
C7—N2—C6 | 104.58 (10) | N1—C19—C20 | 112.47 (10) |
C9—N3—C10 | 117.03 (12) | N1—C19—H19A | 109.1 |
C25—N4—C21 | 125.03 (12) | C20—C19—H19A | 109.1 |
C25—N4—C22 | 113.87 (11) | N1—C19—H19B | 109.1 |
C21—N4—C22 | 120.64 (11) | C20—C19—H19B | 109.1 |
N1—C1—C2 | 131.62 (12) | H19A—C19—H19B | 107.8 |
N1—C1—C6 | 105.67 (11) | C19—C20—C21 | 111.41 (11) |
C2—C1—C6 | 122.71 (11) | C19—C20—H20A | 109.3 |
C3—C2—C1 | 116.11 (12) | C21—C20—H20A | 109.3 |
C3—C2—H2A | 121.9 | C19—C20—H20B | 109.3 |
C1—C2—H2A | 121.9 | C21—C20—H20B | 109.3 |
C2—C3—C4 | 121.97 (12) | H20A—C20—H20B | 108.0 |
C2—C3—H3A | 119.0 | N4—C21—C20 | 113.66 (11) |
C4—C3—H3A | 119.0 | N4—C21—H21A | 108.8 |
C5—C4—C3 | 121.45 (11) | C20—C21—H21A | 108.8 |
C5—C4—C26 | 121.46 (12) | N4—C21—H21B | 108.8 |
C3—C4—C26 | 117.08 (11) | C20—C21—H21B | 108.8 |
C4—C5—C6 | 117.14 (12) | H21A—C21—H21B | 107.7 |
C4—C5—H5A | 121.4 | N4—C22—C23 | 103.29 (11) |
C6—C5—H5A | 121.4 | N4—C22—H22A | 111.1 |
N2—C6—C5 | 129.37 (12) | C23—C22—H22A | 111.1 |
N2—C6—C1 | 110.07 (10) | N4—C22—H22B | 111.1 |
C5—C6—C1 | 120.55 (11) | C23—C22—H22B | 111.1 |
N2—C7—N1 | 113.34 (10) | H22A—C22—H22B | 109.1 |
N2—C7—C8 | 122.57 (11) | C24—C23—C22 | 103.74 (11) |
N1—C7—C8 | 124.09 (11) | C24—C23—H23A | 111.0 |
C9—C8—C12 | 118.26 (11) | C22—C23—H23A | 111.0 |
C9—C8—C7 | 119.18 (11) | C24—C23—H23B | 111.0 |
C12—C8—C7 | 122.53 (11) | C22—C23—H23B | 111.0 |
N3—C9—C8 | 123.60 (12) | H23A—C23—H23B | 109.0 |
N3—C9—H9A | 118.2 | C23—C24—C25 | 104.00 (12) |
C8—C9—H9A | 118.2 | C23—C24—H24A | 111.0 |
N3—C10—C11 | 124.86 (11) | C25—C24—H24A | 111.0 |
N3—C10—H10A | 117.6 | C23—C24—H24B | 111.0 |
C11—C10—H10A | 117.6 | C25—C24—H24B | 111.0 |
C10—C11—C12 | 116.70 (11) | H24A—C24—H24B | 109.0 |
C10—C11—C13 | 121.88 (11) | O3—C25—N4 | 125.84 (13) |
C12—C11—C13 | 121.41 (11) | O3—C25—C24 | 126.49 (13) |
C8—C12—C11 | 119.53 (12) | N4—C25—C24 | 107.66 (13) |
C8—C12—H12A | 120.2 | O2—C26—O1 | 123.17 (12) |
C11—C12—H12A | 120.2 | O2—C26—C4 | 123.42 (13) |
C14—C13—C18 | 118.25 (11) | O1—C26—C4 | 113.41 (11) |
C14—C13—C11 | 120.58 (11) | O1—C27—C28 | 107.83 (12) |
C18—C13—C11 | 121.16 (12) | O1—C27—H27A | 110.1 |
C15—C14—C13 | 121.46 (11) | C28—C27—H27A | 110.1 |
C15—C14—H14A | 119.3 | O1—C27—H27B | 110.1 |
C13—C14—H14A | 119.3 | C28—C27—H27B | 110.1 |
C16—C15—C14 | 117.87 (13) | H27A—C27—H27B | 108.5 |
C16—C15—H15A | 121.1 | C27—C28—H28A | 109.5 |
C14—C15—H15A | 121.1 | C27—C28—H28B | 109.5 |
F1—C16—C17 | 118.35 (11) | H28A—C28—H28B | 109.5 |
F1—C16—C15 | 118.63 (12) | C27—C28—H28C | 109.5 |
C17—C16—C15 | 123.02 (12) | H28A—C28—H28C | 109.5 |
C16—C17—C18 | 118.40 (12) | H28B—C28—H28C | 109.5 |
C16—C17—H17A | 120.8 | H1W1—O1W—H2W1 | 104.2 (18) |
C7—N1—C1—C2 | 177.83 (13) | C13—C11—C12—C8 | −179.92 (11) |
C19—N1—C1—C2 | 3.9 (2) | C10—C11—C13—C14 | 156.88 (13) |
C7—N1—C1—C6 | −1.04 (13) | C12—C11—C13—C14 | −22.24 (18) |
C19—N1—C1—C6 | −174.99 (11) | C10—C11—C13—C18 | −23.22 (19) |
N1—C1—C2—C3 | 178.99 (13) | C12—C11—C13—C18 | 157.65 (13) |
C6—C1—C2—C3 | −2.30 (19) | C18—C13—C14—C15 | −1.8 (2) |
C1—C2—C3—C4 | 0.13 (19) | C11—C13—C14—C15 | 178.05 (12) |
C2—C3—C4—C5 | 1.2 (2) | C13—C14—C15—C16 | 0.0 (2) |
C2—C3—C4—C26 | −179.73 (12) | C14—C15—C16—F1 | −178.27 (12) |
C3—C4—C5—C6 | −0.41 (19) | C14—C15—C16—C17 | 2.3 (2) |
C26—C4—C5—C6 | −179.42 (11) | F1—C16—C17—C18 | 178.03 (12) |
C7—N2—C6—C5 | 177.95 (13) | C15—C16—C17—C18 | −2.5 (2) |
C7—N2—C6—C1 | −1.19 (14) | C16—C17—C18—C13 | 0.5 (2) |
C4—C5—C6—N2 | 179.24 (12) | C14—C13—C18—C17 | 1.6 (2) |
C4—C5—C6—C1 | −1.70 (18) | C11—C13—C18—C17 | −178.31 (12) |
N1—C1—C6—N2 | 1.40 (14) | C7—N1—C19—C20 | 115.93 (14) |
C2—C1—C6—N2 | −177.59 (12) | C1—N1—C19—C20 | −71.54 (15) |
N1—C1—C6—C5 | −177.83 (11) | N1—C19—C20—C21 | −179.93 (10) |
C2—C1—C6—C5 | 3.18 (19) | C25—N4—C21—C20 | −109.17 (15) |
C6—N2—C7—N1 | 0.52 (14) | C22—N4—C21—C20 | 79.12 (15) |
C6—N2—C7—C8 | −179.04 (11) | C19—C20—C21—N4 | 80.43 (14) |
C1—N1—C7—N2 | 0.34 (14) | C25—N4—C22—C23 | −12.33 (16) |
C19—N1—C7—N2 | 173.93 (12) | C21—N4—C22—C23 | 160.26 (12) |
C1—N1—C7—C8 | 179.89 (11) | N4—C22—C23—C24 | 23.99 (15) |
C19—N1—C7—C8 | −6.5 (2) | C22—C23—C24—C25 | −26.92 (16) |
N2—C7—C8—C9 | −45.73 (18) | C21—N4—C25—O3 | 3.8 (2) |
N1—C7—C8—C9 | 134.76 (13) | C22—N4—C25—O3 | 176.05 (14) |
N2—C7—C8—C12 | 132.21 (13) | C21—N4—C25—C24 | −177.20 (12) |
N1—C7—C8—C12 | −47.30 (19) | C22—N4—C25—C24 | −4.99 (17) |
C10—N3—C9—C8 | 0.9 (2) | C23—C24—C25—O3 | −160.64 (15) |
C12—C8—C9—N3 | −1.57 (19) | C23—C24—C25—N4 | 20.41 (17) |
C7—C8—C9—N3 | 176.45 (12) | C27—O1—C26—O2 | −0.48 (19) |
C9—N3—C10—C11 | 0.8 (2) | C27—O1—C26—C4 | 179.56 (11) |
N3—C10—C11—C12 | −1.7 (2) | C5—C4—C26—O2 | 179.52 (13) |
N3—C10—C11—C13 | 179.17 (12) | C3—C4—C26—O2 | 0.5 (2) |
C9—C8—C12—C11 | 0.57 (18) | C5—C4—C26—O1 | −0.52 (18) |
C7—C8—C12—C11 | −177.39 (11) | C3—C4—C26—O1 | −179.57 (11) |
C10—C11—C12—C8 | 0.91 (18) | C26—O1—C27—C28 | 179.18 (12) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1W1···O3 | 0.90 (2) | 1.89 (2) | 2.7881 (16) | 174.3 (19) |
O1W—H2W1···N2i | 0.89 (2) | 2.04 (2) | 2.9309 (16) | 175 (2) |
C14—H14A···O1Wii | 0.95 | 2.49 | 3.4368 (17) | 173 |
C17—H17A···O2iii | 0.95 | 2.45 | 3.1768 (17) | 133 |
C27—H27A···O2iv | 0.99 | 2.45 | 3.2749 (18) | 141 |
C28—H28B···F1i | 0.98 | 2.43 | 3.2851 (18) | 145 |
Symmetry codes: (i) −x+1, y−1/2, −z+1/2; (ii) x, y+1, z; (iii) x−1, y, z; (iv) −x+2, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C28H27FN4O3·H2O |
Mr | 504.55 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 100 |
a, b, c (Å) | 16.0640 (15), 7.6562 (7), 20.1991 (19) |
β (°) | 98.163 (2) |
V (Å3) | 2459.1 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.35 × 0.33 × 0.21 |
Data collection | |
Diffractometer | Bruker APEX Duo CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.967, 0.980 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 24841, 6502, 5002 |
Rint | 0.037 |
(sin θ/λ)max (Å−1) | 0.682 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.042, 0.113, 1.03 |
No. of reflections | 6502 |
No. of parameters | 343 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.31, −0.25 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1W1···O3 | 0.90 (2) | 1.89 (2) | 2.7881 (16) | 174.3 (19) |
O1W—H2W1···N2i | 0.89 (2) | 2.04 (2) | 2.9309 (16) | 175 (2) |
C14—H14A···O1Wii | 0.95 | 2.49 | 3.4368 (17) | 173 |
C17—H17A···O2iii | 0.95 | 2.45 | 3.1768 (17) | 133 |
C27—H27A···O2iv | 0.99 | 2.45 | 3.2749 (18) | 141 |
C28—H28B···F1i | 0.98 | 2.43 | 3.2851 (18) | 145 |
Symmetry codes: (i) −x+1, y−1/2, −z+1/2; (ii) x, y+1, z; (iii) x−1, y, z; (iv) −x+2, y+1/2, −z+1/2. |
Footnotes
‡Thomson Reuters ResearcherID: A-5599-2009.
Acknowledgements
The authors would like to express their gratitude to Pharmacogenetic and Novel Therapeutic Research, Institute for Research in Molecular Medicine and Department of Pharmacology, School of Pharmaceutical Sciences, Universiti Sains Malaysia (USM). This work was funded through Research Grant No. RUC 1001/PSK/8620012 and HiCoE Research Grant No. 311.CIPPM.4401005. IAR also thanks USM for the Short Term Grant No. 304/PFIZIK/6312078.
References
Bruker (2009). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Coburn, R. A., Clark, M. T., Evans, R. T. & Genco, R. J. (1987). J. Med. Chem. 30, 205–208. CrossRef CAS PubMed Web of Science Google Scholar
Rao, A., Chimirri, A., Clercq, E. D., Monforte, A. M., Monforte, P., Pannecouque, C. & Zappala, M. (2002). Il Farmaco. 57, 819–823. Web of Science CrossRef PubMed CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS IUCr Journals Google Scholar
Tanious, F. A., Hamelberg, D., Bailly, C., Czarny, A., Boykin, D. W. & Wilson, W. D. (2004). J. Am. Chem. Soc. 126, 143–153. Web of Science CrossRef PubMed CAS Google Scholar
Yoon, Y. K., Ali, M. A., Choon, T. S., Asik, S. I. J. & Razak, I. A. (2012). Acta Cryst. E68, o59. Web of Science CSD CrossRef IUCr Journals 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.
The benzimidazole core is a key building block for many biologically active compounds that play crucial roles in the function of a number of pharmacologically important molecules (Tanious et al., 2004). Substituted benzimidazoles with a wide range of activities such as antibacterial (Coburn et al., 1987) and anti-HIV (Rao et al., 2002) have been reported. As part of our ongoing structural studies of benzimidazole derivatives (Yoon et al., 2012), we now report the structure of the title compound.
In the title compound (Fig. 1), the benzimidazole ring (N1/N2/C1–C7) is planar with a maximum deviation of 0.028 (1) Å for atom N1. It makes dihedral angles of 47.69 (5) and 60.31 (5)°, respectively, with the pyridine (N3/C8–C12) and the benzene (C13–C18) rings. These two rings make a dihedral angle of 22.58 (6)° with each other. The pyrrolidine ring show a sign of envelope conformation with atom C23 at the flap, and with puckering parameters Q = 0.2695 (16) Å and φ = 81.9 (3)°.
In the crystal, the main molecule is connected to the water through O1W—H1W1···O3 and O1W—H2W1···N2i hydrogen bonds (Table 1). The molecules are further linked into a two-dimensional layer parallel to the ab plane by C14—H14A···O1Wii, C17—H17A···O2iii, C27—H27A···O2iv and C28—H28B···F1v interactions (Table 1). A π–π interaction observed between the pyridine (N3/C8–C12) and the benzene (C1–C6) rings with a centroid-centroid distance of 3.685 (8) Å (1 - x, 1/2 + y, 1/2 - z) further stabilizes the crystal structure.