organic compounds
3-Benzyl-7-methyl-9-phenyl-2-tosyl-2,3,3a,4,9,9a-hexahydro-1H-pyrrolo[3,4-b]quinoline
aDepartment of Physics, Anna University Chennai, Chennai 600 025, India, bDepartment of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India, and cX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
*Correspondence e-mail: kali@annauniv.edu
In the title compound, C32H32N2O2S, the pyrrolidine ring adopts a twist conformation while the tetrahydropyridine ring is in a distorted half-chair conformation. The two rings are trans-fused. The dihedral angle between the sulfonyl and benzyl phenyl rings is 72.54 (14)°. The molecular structure is stabilized by C—H⋯O hydrogen bonds, and N—H⋯π interactions involving the benzyl phenyl ring. The screw-related molecules are linked into chains along the b axis by C—H⋯O hydrogen bonds and C—H⋯π interactions. Adjacent inversion-related chains interact via C—H⋯π interactions, forming a two-dimensional network parallel to the bc plane.
Related literature
For the anticancer and photochemotherapeutic activity of pyrroloquinoline derivatives, see: Ferlin et al. (2005); Gasparotto et al. (2007); Barraja et al. (2003). For a related structure, see: Sudha et al. (2009). For ring puckering parameters, see: Cremer & Pople (1975). For asymmetry parameters, see: Duax et al. (1976).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2005); cell SAINT (Bruker, 2005); 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/S1600536809044481/tk2561sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809044481/tk2561Isup2.hkl
InCl3 (20 mol%) was added to a mixture of 2-(N-cinnamyl-N-tosylamino)-3-phenyl propanal (1 mmol) and p-methyl aniline (1 mmol) in acetonitrile (20 ml). The reaction mixture was stirred at room temperature for 1 min. On completion of the reaction, as indicated by TLC, the mixture was quenched with water and extracted with ethyl acetate. The organic layer was washed with brine and dried over Na2SO4. The solvent was evaporated in vacuo and the crude product was chromatographed on silica gel using a hexane-ethyl acetate (8.5:1.5 v/v) mixture to obtain the title compound. The compound was recrystallized from ethyl acetate solution by slow evaporation.
The N-bound H atom was located in a difference map and refined freely [N—H = 0.87 (3) Å]. The remaining H atoms were positioned geometrically (C—H = 0.93–0.98 Å) and allowed to ride on their parent atoms, with Uiso(H) = 1.2Ueq(C) or 1.5Ueq(Cmethyl). A rotating group model was used for methyl groups. Reflection 002 was partially obscured by the beam stop and was omitted.
Pyrroloquinoline derivatives have been synthesized and investigated as potential anticancer drugs (Ferlin et al., 2005; Gasparotto et al., 2007). Some of them have been found to exhibit photochemotherapeutic activity (Barraja et al., 2003). As part of our studies on pyrroloquinoline derivatives, we report here the
of the title compound (I).In the title molecule, the pyrrolidine ring adopts a twist conformation; the asymmetry parameters ΔC2[C2—C10] (Duax et al., 1976) and the puckering parameters q2 and φ (Cremer & Pople, 1975) are 6.1 (3)°, 0.407 (3) Å and 85.0 (4)°, respectively. The tosyl group is attached to the pyrrolidine ring in a biaxial position. The tetrahydropyridine ring adopts a distorted half-chair conformation; the Q, θ, φ and ΔCs[C10] values for the above ring are 0.522 (3) Å, 129.4 (3)°, 93.1 (3)° and 101.3 (4)°, respectively. The phenyl group attached to the tetrahydropyridine ring is in a biaxial position. The C19—C24 phenyl ring forms dihedral angles of 80.98 (13) and 7.40 (14)°, respectively, with the C4—C9 and C12—C17 benzene rings. The C12—C17 and C26—C31 rings are oriented at a dihedral angle of 72.54 (14)°. The molecular structure is stabilized by C—H···O hydrogen bonds and N—H···π interactions (Table 1).
Bond lengths and angles are comparable with those in 3-benzyl-9-phenyl-2-tosyl-2,3,3a,4,9,9a-hexahydro-1H-pyrrolo[3,4-b]quinoline, (II), (Sudha et al., 2009). A superposition of the non-H atoms of the above molecule with those of the title molecule using XP in SHELXTL (Sheldrick, 2008), gave an r.m.s. deviation of 0.489 Å (Fig. 2). In both compounds, the pyrrolidine ring is trans-fused to the tetrahydropyridine ring but they differ in relative orientations of the phenyl rings.
In the solid state, screw-related molecules are linked into chains along the b axis by C—H···O hydrogen bonds and C—H···π interactions involving the C26—C31 ring (Table 1). Adjacent inversion-related chains interact via C—H···π interactions involving the C4—C9 and C12—C17 rings to form a two-dimensional network parallel to the bc plane (Fig.3).
A comparison of crystal packing in (I) and (II) shows that the presence of the methyl group at 7-position completely changes the packing mode. Without the methyl group, the molecules are linked into a chain along the a axis by intermolecular C—H···π interactions. But the presence of the methyl group resulted in a two-dimensional network parallel to the bc plane, as discussed above.
For the anticancer and photochemotherapeutic activity of pyrroloquinoline derivatives, see: Ferlin et al. (2005); Gasparotto et al. (2007); Barraja et al. (2003). For a related structure, see: Sudha et al. (2009). For ring puckering parameters, see: Cremer & Pople (1975). For asymmetry parameters, see: Duax et al. (1976). Cg1, Cg2 and Cg3 are the centroids of the C4–C9, C12–C17 and C26–C31 rings, respectively.
Data collection: APEX2 (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); 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 molecular structure of the title compound. Displacement ellipsoids are drawn at the 50% probability level. The dashed line indicates a C—H···O hydrogen bond and the dotted line indicates an N—H···π interaction. | |
Fig. 2. Fit of the title molecule (solid lines) with (II) (dashed lines). H atoms have been omitted for clarity. | |
Fig. 3. Crystal packing of the title compound. C—H···O hydrogen bonds are shown as dashed lines and C—H···π interactions are shown as dotted lines. For the sake of clarity, H atoms not involved in the interactions have been omitted. |
C32H32N2O2S | F(000) = 1080 |
Mr = 508.66 | Dx = 1.288 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 5605 reflections |
a = 9.0445 (4) Å | θ = 2.3–30.1° |
b = 10.6014 (4) Å | µ = 0.16 mm−1 |
c = 27.533 (1) Å | T = 100 K |
β = 96.294 (3)° | Block, colourless |
V = 2624.07 (18) Å3 | 0.38 × 0.20 × 0.17 mm |
Z = 4 |
Bruker SMART APEXII CCD area-detector diffractometer | 5138 independent reflections |
Radiation source: fine-focus sealed tube | 3615 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.078 |
φ and ω scans | θmax = 26.0°, θmin = 2.6° |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | h = −10→11 |
Tmin = 0.360, Tmax = 0.974 | k = −13→12 |
22823 measured reflections | l = −33→33 |
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)] = 0.061 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.178 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | w = 1/[σ2(Fo2) + (0.1011P)2 + 1.1335P] where P = (Fo2 + 2Fc2)/3 |
5138 reflections | (Δ/σ)max = 0.001 |
340 parameters | Δρmax = 0.69 e Å−3 |
0 restraints | Δρmin = −0.51 e Å−3 |
C32H32N2O2S | V = 2624.07 (18) Å3 |
Mr = 508.66 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 9.0445 (4) Å | µ = 0.16 mm−1 |
b = 10.6014 (4) Å | T = 100 K |
c = 27.533 (1) Å | 0.38 × 0.20 × 0.17 mm |
β = 96.294 (3)° |
Bruker SMART APEXII CCD area-detector diffractometer | 5138 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 3615 reflections with I > 2σ(I) |
Tmin = 0.360, Tmax = 0.974 | Rint = 0.078 |
22823 measured reflections |
R[F2 > 2σ(F2)] = 0.061 | 0 restraints |
wR(F2) = 0.178 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | Δρmax = 0.69 e Å−3 |
5138 reflections | Δρmin = −0.51 e Å−3 |
340 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 | 0.62265 (8) | 0.48132 (7) | 0.13646 (2) | 0.0262 (2) | |
O1 | 0.4733 (2) | 0.4422 (2) | 0.12298 (7) | 0.0322 (5) | |
O2 | 0.6528 (2) | 0.58710 (19) | 0.16844 (7) | 0.0335 (5) | |
N1 | 0.7118 (3) | 0.3614 (2) | 0.16335 (8) | 0.0239 (5) | |
N2 | 1.0859 (3) | 0.2372 (2) | 0.15932 (8) | 0.0249 (5) | |
H1N2 | 1.156 (3) | 0.272 (3) | 0.1791 (11) | 0.022 (7)* | |
C1 | 0.6810 (3) | 0.2332 (3) | 0.14178 (10) | 0.0260 (6) | |
H1A | 0.6104 | 0.2378 | 0.1126 | 0.031* | |
H1B | 0.6422 | 0.1770 | 0.1651 | 0.031* | |
C2 | 0.8318 (3) | 0.1896 (2) | 0.12960 (8) | 0.0214 (6) | |
H2 | 0.8528 | 0.2304 | 0.0992 | 0.026* | |
C3 | 0.8577 (3) | 0.0474 (2) | 0.12508 (9) | 0.0217 (6) | |
H3 | 0.8140 | 0.0064 | 0.1520 | 0.026* | |
C4 | 1.0250 (3) | 0.0211 (3) | 0.13221 (8) | 0.0228 (6) | |
C5 | 1.0783 (3) | −0.0993 (3) | 0.12259 (9) | 0.0264 (6) | |
H5 | 1.0096 | −0.1616 | 0.1122 | 0.032* | |
C6 | 1.2275 (3) | −0.1305 (3) | 0.12773 (9) | 0.0305 (7) | |
C7 | 1.3287 (4) | −0.0369 (3) | 0.14395 (10) | 0.0362 (8) | |
H7 | 1.4300 | −0.0551 | 0.1478 | 0.043* | |
C8 | 1.2805 (3) | 0.0830 (3) | 0.15445 (10) | 0.0333 (7) | |
H8 | 1.3500 | 0.1441 | 0.1655 | 0.040* | |
C9 | 1.1304 (3) | 0.1136 (3) | 0.14877 (9) | 0.0258 (6) | |
C10 | 0.9342 (3) | 0.2446 (2) | 0.17126 (9) | 0.0223 (6) | |
H10 | 0.9251 | 0.1957 | 0.2010 | 0.027* | |
C11 | 0.8745 (3) | 0.3775 (2) | 0.17768 (9) | 0.0214 (6) | |
H11 | 0.9149 | 0.4339 | 0.1542 | 0.026* | |
C12 | 0.7040 (3) | 0.5160 (3) | 0.08227 (9) | 0.0262 (6) | |
C13 | 0.8142 (3) | 0.6074 (3) | 0.08287 (10) | 0.0296 (7) | |
H13 | 0.8492 | 0.6472 | 0.1120 | 0.036* | |
C14 | 0.8717 (4) | 0.6392 (3) | 0.03979 (10) | 0.0332 (7) | |
H14 | 0.9459 | 0.7000 | 0.0404 | 0.040* | |
C15 | 0.8201 (3) | 0.5815 (3) | −0.00429 (10) | 0.0293 (7) | |
C16 | 0.7127 (3) | 0.4883 (3) | −0.00385 (10) | 0.0307 (7) | |
H16 | 0.6792 | 0.4474 | −0.0329 | 0.037* | |
C17 | 0.6536 (3) | 0.4543 (3) | 0.03907 (10) | 0.0290 (6) | |
H17 | 0.5817 | 0.3914 | 0.0388 | 0.035* | |
C18 | 0.8756 (4) | 0.6232 (3) | −0.05135 (11) | 0.0381 (8) | |
H18A | 0.8361 | 0.5685 | −0.0774 | 0.057* | |
H18B | 0.9823 | 0.6194 | −0.0481 | 0.057* | |
H18C | 0.8439 | 0.7082 | −0.0586 | 0.057* | |
C19 | 0.7819 (3) | −0.0079 (2) | 0.07772 (9) | 0.0219 (6) | |
C20 | 0.8280 (3) | 0.0268 (3) | 0.03263 (9) | 0.0270 (6) | |
H20 | 0.9051 | 0.0844 | 0.0316 | 0.032* | |
C21 | 0.7597 (3) | −0.0241 (3) | −0.01055 (10) | 0.0305 (7) | |
H21 | 0.7916 | −0.0010 | −0.0403 | 0.037* | |
C22 | 0.6438 (3) | −0.1093 (3) | −0.00949 (11) | 0.0327 (7) | |
H22 | 0.5974 | −0.1428 | −0.0385 | 0.039* | |
C23 | 0.5976 (3) | −0.1444 (3) | 0.03477 (11) | 0.0329 (7) | |
H23 | 0.5202 | −0.2018 | 0.0357 | 0.040* | |
C24 | 0.6674 (3) | −0.0936 (3) | 0.07798 (10) | 0.0276 (6) | |
H24 | 0.6360 | −0.1180 | 0.1076 | 0.033* | |
C25 | 0.9111 (3) | 0.4321 (3) | 0.22950 (9) | 0.0261 (6) | |
H25A | 0.8648 | 0.5142 | 0.2315 | 0.031* | |
H25B | 0.8722 | 0.3769 | 0.2532 | 0.031* | |
C26 | 1.0768 (3) | 0.4441 (3) | 0.24082 (9) | 0.0257 (6) | |
C27 | 1.1623 (3) | 0.3525 (3) | 0.26768 (9) | 0.0263 (6) | |
H27 | 1.1146 | 0.2873 | 0.2823 | 0.032* | |
C28 | 1.3159 (4) | 0.3569 (3) | 0.27287 (9) | 0.0307 (7) | |
H28 | 1.3702 | 0.2939 | 0.2903 | 0.037* | |
C29 | 1.3898 (3) | 0.4552 (3) | 0.25217 (10) | 0.0332 (7) | |
H29 | 1.4932 | 0.4583 | 0.2556 | 0.040* | |
C30 | 1.3068 (4) | 0.5486 (3) | 0.22638 (10) | 0.0342 (7) | |
H30 | 1.3549 | 0.6153 | 0.2128 | 0.041* | |
C31 | 1.1532 (3) | 0.5429 (3) | 0.22085 (9) | 0.0293 (7) | |
H31 | 1.0993 | 0.6062 | 0.2035 | 0.035* | |
C32 | 1.2786 (4) | −0.2591 (3) | 0.11267 (11) | 0.0403 (8) | |
H32A | 1.2094 | −0.3220 | 0.1210 | 0.060* | |
H32B | 1.3752 | −0.2767 | 0.1294 | 0.060* | |
H32C | 1.2837 | −0.2603 | 0.0780 | 0.060* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0340 (4) | 0.0233 (4) | 0.0212 (3) | 0.0093 (3) | 0.0028 (3) | −0.0022 (3) |
O1 | 0.0324 (12) | 0.0364 (12) | 0.0282 (10) | 0.0140 (9) | 0.0044 (8) | 0.0006 (9) |
O2 | 0.0486 (13) | 0.0266 (11) | 0.0254 (10) | 0.0114 (9) | 0.0040 (9) | −0.0076 (8) |
N1 | 0.0294 (13) | 0.0202 (12) | 0.0219 (11) | 0.0044 (9) | 0.0023 (9) | 0.0017 (9) |
N2 | 0.0245 (13) | 0.0277 (13) | 0.0221 (11) | 0.0020 (10) | 0.0007 (10) | −0.0082 (10) |
C1 | 0.0295 (16) | 0.0213 (15) | 0.0268 (14) | 0.0015 (12) | 0.0015 (11) | −0.0008 (11) |
C2 | 0.0293 (15) | 0.0188 (14) | 0.0161 (12) | 0.0011 (11) | 0.0033 (11) | 0.0033 (10) |
C3 | 0.0303 (16) | 0.0183 (14) | 0.0170 (12) | 0.0010 (11) | 0.0054 (10) | 0.0038 (10) |
C4 | 0.0305 (16) | 0.0250 (15) | 0.0127 (11) | 0.0046 (12) | 0.0018 (10) | 0.0019 (10) |
C5 | 0.0384 (17) | 0.0252 (15) | 0.0153 (12) | 0.0051 (12) | 0.0015 (11) | 0.0047 (10) |
C6 | 0.0436 (19) | 0.0342 (17) | 0.0134 (12) | 0.0147 (14) | 0.0012 (12) | 0.0039 (11) |
C7 | 0.0331 (18) | 0.054 (2) | 0.0205 (13) | 0.0201 (15) | −0.0019 (12) | −0.0069 (13) |
C8 | 0.0294 (17) | 0.048 (2) | 0.0214 (13) | 0.0040 (14) | −0.0010 (12) | −0.0121 (13) |
C9 | 0.0318 (16) | 0.0328 (16) | 0.0125 (11) | 0.0063 (12) | 0.0013 (11) | −0.0017 (11) |
C10 | 0.0297 (16) | 0.0212 (14) | 0.0163 (12) | 0.0029 (11) | 0.0035 (10) | 0.0008 (10) |
C11 | 0.0271 (15) | 0.0193 (14) | 0.0177 (12) | 0.0027 (11) | 0.0015 (10) | 0.0010 (10) |
C12 | 0.0345 (17) | 0.0234 (15) | 0.0206 (12) | 0.0089 (12) | 0.0023 (11) | 0.0016 (11) |
C13 | 0.0454 (19) | 0.0191 (14) | 0.0231 (13) | 0.0035 (13) | −0.0016 (12) | 0.0006 (11) |
C14 | 0.0408 (19) | 0.0254 (16) | 0.0326 (15) | 0.0012 (13) | 0.0004 (13) | 0.0060 (12) |
C15 | 0.0352 (17) | 0.0258 (16) | 0.0269 (14) | 0.0114 (13) | 0.0029 (12) | 0.0032 (11) |
C16 | 0.0402 (18) | 0.0306 (16) | 0.0206 (13) | 0.0107 (13) | −0.0001 (12) | −0.0049 (11) |
C17 | 0.0324 (17) | 0.0258 (16) | 0.0281 (14) | 0.0046 (12) | −0.0006 (12) | −0.0029 (11) |
C18 | 0.048 (2) | 0.0374 (18) | 0.0297 (15) | 0.0112 (15) | 0.0075 (14) | 0.0067 (13) |
C19 | 0.0264 (15) | 0.0167 (13) | 0.0223 (12) | 0.0039 (11) | 0.0013 (11) | 0.0025 (10) |
C20 | 0.0370 (17) | 0.0226 (15) | 0.0212 (13) | −0.0017 (12) | 0.0022 (11) | 0.0005 (11) |
C21 | 0.0390 (18) | 0.0312 (16) | 0.0207 (13) | 0.0076 (13) | 0.0009 (12) | 0.0016 (12) |
C22 | 0.0355 (18) | 0.0304 (16) | 0.0295 (14) | 0.0064 (13) | −0.0091 (12) | −0.0080 (12) |
C23 | 0.0290 (17) | 0.0281 (17) | 0.0401 (16) | −0.0035 (12) | −0.0034 (13) | −0.0031 (13) |
C24 | 0.0324 (17) | 0.0234 (15) | 0.0275 (14) | 0.0017 (12) | 0.0053 (12) | −0.0008 (11) |
C25 | 0.0360 (17) | 0.0225 (14) | 0.0201 (13) | 0.0025 (12) | 0.0045 (11) | −0.0036 (11) |
C26 | 0.0376 (17) | 0.0241 (15) | 0.0159 (12) | 0.0001 (12) | 0.0048 (11) | −0.0054 (10) |
C27 | 0.0417 (18) | 0.0212 (14) | 0.0152 (12) | −0.0024 (12) | −0.0006 (11) | −0.0024 (10) |
C28 | 0.0417 (19) | 0.0287 (16) | 0.0203 (13) | 0.0059 (13) | −0.0035 (12) | −0.0023 (11) |
C29 | 0.0324 (17) | 0.0429 (19) | 0.0236 (14) | −0.0015 (14) | −0.0002 (12) | −0.0016 (13) |
C30 | 0.046 (2) | 0.0344 (18) | 0.0225 (13) | −0.0070 (14) | 0.0031 (13) | 0.0022 (12) |
C31 | 0.0433 (19) | 0.0231 (15) | 0.0208 (13) | 0.0022 (13) | 0.0006 (12) | −0.0008 (11) |
C32 | 0.053 (2) | 0.0387 (19) | 0.0301 (15) | 0.0231 (15) | 0.0078 (14) | 0.0043 (13) |
S1—O1 | 1.423 (2) | C14—H14 | 0.93 |
S1—O2 | 1.433 (2) | C15—C16 | 1.387 (4) |
S1—N1 | 1.638 (2) | C15—C18 | 1.506 (4) |
S1—C12 | 1.773 (3) | C16—C17 | 1.397 (4) |
N1—C11 | 1.491 (3) | C16—H16 | 0.93 |
N1—C1 | 1.497 (3) | C17—H17 | 0.93 |
N2—C9 | 1.410 (4) | C18—H18A | 0.96 |
N2—C10 | 1.448 (3) | C18—H18B | 0.96 |
N2—H1N2 | 0.87 (3) | C18—H18C | 0.96 |
C1—C2 | 1.512 (4) | C19—C24 | 1.379 (4) |
C1—H1A | 0.97 | C19—C20 | 1.401 (4) |
C1—H1B | 0.97 | C20—C21 | 1.388 (4) |
C2—C10 | 1.510 (4) | C20—H20 | 0.93 |
C2—C3 | 1.532 (4) | C21—C22 | 1.386 (4) |
C2—H2 | 0.98 | C21—H21 | 0.93 |
C3—C19 | 1.522 (4) | C22—C23 | 1.382 (4) |
C3—C4 | 1.530 (4) | C22—H22 | 0.93 |
C3—H3 | 0.98 | C23—C24 | 1.392 (4) |
C4—C5 | 1.400 (4) | C23—H23 | 0.93 |
C4—C9 | 1.408 (4) | C24—H24 | 0.93 |
C5—C6 | 1.382 (4) | C25—C26 | 1.502 (4) |
C5—H5 | 0.93 | C25—H25A | 0.97 |
C6—C7 | 1.391 (5) | C25—H25B | 0.97 |
C6—C32 | 1.512 (4) | C26—C31 | 1.400 (4) |
C7—C8 | 1.385 (4) | C26—C27 | 1.401 (4) |
C7—H7 | 0.93 | C27—C28 | 1.381 (4) |
C8—C9 | 1.388 (4) | C27—H27 | 0.93 |
C8—H8 | 0.93 | C28—C29 | 1.394 (4) |
C10—C11 | 1.527 (4) | C28—H28 | 0.93 |
C10—H10 | 0.98 | C29—C30 | 1.390 (4) |
C11—C25 | 1.541 (3) | C29—H29 | 0.93 |
C11—H11 | 0.98 | C30—C31 | 1.383 (4) |
C12—C13 | 1.389 (4) | C30—H30 | 0.93 |
C12—C17 | 1.390 (4) | C31—H31 | 0.93 |
C13—C14 | 1.388 (4) | C32—H32A | 0.96 |
C13—H13 | 0.93 | C32—H32B | 0.96 |
C14—C15 | 1.393 (4) | C32—H32C | 0.96 |
O1—S1—O2 | 119.99 (12) | C13—C14—C15 | 121.1 (3) |
O1—S1—N1 | 107.33 (12) | C13—C14—H14 | 119.4 |
O2—S1—N1 | 106.16 (12) | C15—C14—H14 | 119.4 |
O1—S1—C12 | 108.10 (13) | C16—C15—C14 | 118.2 (3) |
O2—S1—C12 | 106.62 (13) | C16—C15—C18 | 121.1 (3) |
N1—S1—C12 | 108.18 (12) | C14—C15—C18 | 120.6 (3) |
C11—N1—C1 | 110.2 (2) | C15—C16—C17 | 121.7 (3) |
C11—N1—S1 | 116.96 (17) | C15—C16—H16 | 119.2 |
C1—N1—S1 | 117.64 (17) | C17—C16—H16 | 119.2 |
C9—N2—C10 | 113.3 (2) | C12—C17—C16 | 118.8 (3) |
C9—N2—H1N2 | 108.1 (19) | C12—C17—H17 | 120.6 |
C10—N2—H1N2 | 118.8 (19) | C16—C17—H17 | 120.6 |
N1—C1—C2 | 103.4 (2) | C15—C18—H18A | 109.5 |
N1—C1—H1A | 111.1 | C15—C18—H18B | 109.5 |
C2—C1—H1A | 111.1 | H18A—C18—H18B | 109.5 |
N1—C1—H1B | 111.1 | C15—C18—H18C | 109.5 |
C2—C1—H1B | 111.1 | H18A—C18—H18C | 109.5 |
H1A—C1—H1B | 109.0 | H18B—C18—H18C | 109.5 |
C10—C2—C1 | 101.9 (2) | C24—C19—C20 | 118.3 (2) |
C10—C2—C3 | 110.8 (2) | C24—C19—C3 | 121.1 (2) |
C1—C2—C3 | 117.9 (2) | C20—C19—C3 | 120.6 (2) |
C10—C2—H2 | 108.6 | C21—C20—C19 | 120.6 (3) |
C1—C2—H2 | 108.6 | C21—C20—H20 | 119.7 |
C3—C2—H2 | 108.6 | C19—C20—H20 | 119.7 |
C19—C3—C4 | 112.7 (2) | C22—C21—C20 | 120.1 (3) |
C19—C3—C2 | 113.0 (2) | C22—C21—H21 | 119.9 |
C4—C3—C2 | 109.1 (2) | C20—C21—H21 | 119.9 |
C19—C3—H3 | 107.3 | C23—C22—C21 | 119.8 (3) |
C4—C3—H3 | 107.3 | C23—C22—H22 | 120.1 |
C2—C3—H3 | 107.3 | C21—C22—H22 | 120.1 |
C5—C4—C9 | 117.5 (3) | C22—C23—C24 | 119.8 (3) |
C5—C4—C3 | 119.9 (2) | C22—C23—H23 | 120.1 |
C9—C4—C3 | 122.6 (2) | C24—C23—H23 | 120.1 |
C6—C5—C4 | 123.5 (3) | C19—C24—C23 | 121.4 (3) |
C6—C5—H5 | 118.3 | C19—C24—H24 | 119.3 |
C4—C5—H5 | 118.3 | C23—C24—H24 | 119.3 |
C5—C6—C7 | 117.6 (3) | C26—C25—C11 | 109.4 (2) |
C5—C6—C32 | 120.8 (3) | C26—C25—H25A | 109.8 |
C7—C6—C32 | 121.4 (3) | C11—C25—H25A | 109.8 |
C8—C7—C6 | 120.7 (3) | C26—C25—H25B | 109.8 |
C8—C7—H7 | 119.6 | C11—C25—H25B | 109.8 |
C6—C7—H7 | 119.6 | H25A—C25—H25B | 108.2 |
C7—C8—C9 | 121.2 (3) | C31—C26—C27 | 117.3 (3) |
C7—C8—H8 | 119.4 | C31—C26—C25 | 120.4 (2) |
C9—C8—H8 | 119.4 | C27—C26—C25 | 122.1 (3) |
C8—C9—C4 | 119.5 (3) | C28—C27—C26 | 121.5 (3) |
C8—C9—N2 | 119.5 (3) | C28—C27—H27 | 119.2 |
C4—C9—N2 | 121.0 (3) | C26—C27—H27 | 119.2 |
N2—C10—C2 | 108.9 (2) | C27—C28—C29 | 120.3 (3) |
N2—C10—C11 | 115.6 (2) | C27—C28—H28 | 119.9 |
C2—C10—C11 | 104.4 (2) | C29—C28—H28 | 119.9 |
N2—C10—H10 | 109.2 | C30—C29—C28 | 119.1 (3) |
C2—C10—H10 | 109.2 | C30—C29—H29 | 120.5 |
C11—C10—H10 | 109.2 | C28—C29—H29 | 120.5 |
N1—C11—C10 | 102.4 (2) | C31—C30—C29 | 120.3 (3) |
N1—C11—C25 | 113.2 (2) | C31—C30—H30 | 119.8 |
C10—C11—C25 | 114.3 (2) | C29—C30—H30 | 119.8 |
N1—C11—H11 | 108.9 | C30—C31—C26 | 121.5 (3) |
C10—C11—H11 | 108.9 | C30—C31—H31 | 119.2 |
C25—C11—H11 | 108.9 | C26—C31—H31 | 119.2 |
C13—C12—C17 | 120.4 (2) | C6—C32—H32A | 109.5 |
C13—C12—S1 | 119.9 (2) | C6—C32—H32B | 109.5 |
C17—C12—S1 | 119.7 (2) | H32A—C32—H32B | 109.5 |
C14—C13—C12 | 119.7 (3) | C6—C32—H32C | 109.5 |
C14—C13—H13 | 120.2 | H32A—C32—H32C | 109.5 |
C12—C13—H13 | 120.2 | H32B—C32—H32C | 109.5 |
O1—S1—N1—C11 | 175.82 (17) | C2—C10—C11—N1 | 31.8 (2) |
O2—S1—N1—C11 | −54.7 (2) | N2—C10—C11—C25 | −85.8 (3) |
C12—S1—N1—C11 | 59.4 (2) | C2—C10—C11—C25 | 154.5 (2) |
O1—S1—N1—C1 | 41.1 (2) | O1—S1—C12—C13 | 149.6 (2) |
O2—S1—N1—C1 | 170.60 (19) | O2—S1—C12—C13 | 19.4 (3) |
C12—S1—N1—C1 | −75.3 (2) | N1—S1—C12—C13 | −94.4 (2) |
C11—N1—C1—C2 | −16.8 (3) | O1—S1—C12—C17 | −28.3 (3) |
S1—N1—C1—C2 | 120.77 (19) | O2—S1—C12—C17 | −158.5 (2) |
N1—C1—C2—C10 | 35.8 (2) | N1—S1—C12—C17 | 87.6 (2) |
N1—C1—C2—C3 | 157.3 (2) | C17—C12—C13—C14 | 1.5 (4) |
C10—C2—C3—C19 | −167.9 (2) | S1—C12—C13—C14 | −176.5 (2) |
C1—C2—C3—C19 | 75.3 (3) | C12—C13—C14—C15 | 0.4 (4) |
C10—C2—C3—C4 | −41.8 (3) | C13—C14—C15—C16 | −2.0 (4) |
C1—C2—C3—C4 | −158.6 (2) | C13—C14—C15—C18 | 175.7 (3) |
C19—C3—C4—C5 | −44.2 (3) | C14—C15—C16—C17 | 1.7 (4) |
C2—C3—C4—C5 | −170.5 (2) | C18—C15—C16—C17 | −175.9 (3) |
C19—C3—C4—C9 | 136.4 (2) | C13—C12—C17—C16 | −1.7 (4) |
C2—C3—C4—C9 | 10.1 (3) | S1—C12—C17—C16 | 176.2 (2) |
C9—C4—C5—C6 | −1.1 (4) | C15—C16—C17—C12 | 0.1 (4) |
C3—C4—C5—C6 | 179.5 (2) | C4—C3—C19—C24 | 121.5 (3) |
C4—C5—C6—C7 | 0.9 (4) | C2—C3—C19—C24 | −114.3 (3) |
C4—C5—C6—C32 | −174.8 (2) | C4—C3—C19—C20 | −58.1 (3) |
C5—C6—C7—C8 | 0.0 (4) | C2—C3—C19—C20 | 66.1 (3) |
C32—C6—C7—C8 | 175.6 (3) | C24—C19—C20—C21 | 0.0 (4) |
C6—C7—C8—C9 | −0.5 (4) | C3—C19—C20—C21 | 179.6 (2) |
C7—C8—C9—C4 | 0.2 (4) | C19—C20—C21—C22 | 0.5 (4) |
C7—C8—C9—N2 | −179.3 (3) | C20—C21—C22—C23 | −0.6 (4) |
C5—C4—C9—C8 | 0.5 (3) | C21—C22—C23—C24 | 0.2 (5) |
C3—C4—C9—C8 | 179.9 (2) | C20—C19—C24—C23 | −0.4 (4) |
C5—C4—C9—N2 | −179.9 (2) | C3—C19—C24—C23 | 179.9 (3) |
C3—C4—C9—N2 | −0.6 (4) | C22—C23—C24—C19 | 0.3 (4) |
C10—N2—C9—C8 | −156.3 (2) | N1—C11—C25—C26 | 179.6 (2) |
C10—N2—C9—C4 | 24.2 (3) | C10—C11—C25—C26 | 62.9 (3) |
C9—N2—C10—C2 | −56.6 (3) | C11—C25—C26—C31 | 76.8 (3) |
C9—N2—C10—C11 | −173.7 (2) | C11—C25—C26—C27 | −97.3 (3) |
C1—C2—C10—N2 | −166.6 (2) | C31—C26—C27—C28 | −2.2 (4) |
C3—C2—C10—N2 | 67.1 (3) | C25—C26—C27—C28 | 172.1 (2) |
C1—C2—C10—C11 | −42.5 (2) | C26—C27—C28—C29 | 1.5 (4) |
C3—C2—C10—C11 | −168.8 (2) | C27—C28—C29—C30 | 0.1 (4) |
C1—N1—C11—C10 | −9.1 (2) | C28—C29—C30—C31 | −0.8 (4) |
S1—N1—C11—C10 | −146.95 (17) | C29—C30—C31—C26 | 0.0 (4) |
C1—N1—C11—C25 | −132.6 (2) | C27—C26—C31—C30 | 1.5 (4) |
S1—N1—C11—C25 | 89.6 (2) | C25—C26—C31—C30 | −173.0 (2) |
N2—C10—C11—N1 | 151.4 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1A···O1 | 0.97 | 2.53 | 2.914 (4) | 104 |
C13—H13···O2 | 0.93 | 2.57 | 2.912 (3) | 103 |
C25—H25A···O2 | 0.97 | 2.56 | 3.182 (3) | 122 |
C28—H28···O2i | 0.93 | 2.49 | 3.282 (4) | 143 |
N2—H1N2···Cg3 | 0.87 (3) | 2.69 (3) | 3.461 (3) | 148 (2) |
C3—H3···Cg3i | 0.98 | 2.93 | 3.852 (3) | 158 |
C18—H18B···Cg2ii | 0.96 | 2.90 | 3.723 (4) | 145 |
C21—H21···Cg1iii | 0.93 | 2.74 | 3.637 (3) | 162 |
Symmetry codes: (i) −x+2, y−1/2, −z+1/2; (ii) −x+2, −y+1, −z; (iii) −x+2, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | C32H32N2O2S |
Mr | 508.66 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 100 |
a, b, c (Å) | 9.0445 (4), 10.6014 (4), 27.533 (1) |
β (°) | 96.294 (3) |
V (Å3) | 2624.07 (18) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.16 |
Crystal size (mm) | 0.38 × 0.20 × 0.17 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.360, 0.974 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 22823, 5138, 3615 |
Rint | 0.078 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.061, 0.178, 1.04 |
No. of reflections | 5138 |
No. of parameters | 340 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.69, −0.51 |
Computer programs: APEX2 (Bruker, 2005), SAINT (Bruker, 2005), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C25—H25A···O2 | 0.97 | 2.56 | 3.182 (3) | 122 |
C28—H28···O2i | 0.93 | 2.49 | 3.282 (4) | 143 |
N2—H1N2···Cg3 | 0.87 (3) | 2.69 (3) | 3.461 (3) | 148 (2) |
C3—H3···Cg3i | 0.98 | 2.93 | 3.852 (3) | 158 |
C18—H18B···Cg2ii | 0.96 | 2.90 | 3.723 (4) | 145 |
C21—H21···Cg1iii | 0.93 | 2.74 | 3.637 (3) | 162 |
Symmetry codes: (i) −x+2, y−1/2, −z+1/2; (ii) −x+2, −y+1, −z; (iii) −x+2, −y, −z. |
Acknowledgements
HKF thanks Universiti Sains Malaysia for the Research University Golden Goose grant No. 1001/PFIZIK/811012.
References
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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.
Pyrroloquinoline derivatives have been synthesized and investigated as potential anticancer drugs (Ferlin et al., 2005; Gasparotto et al., 2007). Some of them have been found to exhibit photochemotherapeutic activity (Barraja et al., 2003). As part of our studies on pyrroloquinoline derivatives, we report here the crystal structure of the title compound (I).
In the title molecule, the pyrrolidine ring adopts a twist conformation; the asymmetry parameters ΔC2[C2—C10] (Duax et al., 1976) and the puckering parameters q2 and φ (Cremer & Pople, 1975) are 6.1 (3)°, 0.407 (3) Å and 85.0 (4)°, respectively. The tosyl group is attached to the pyrrolidine ring in a biaxial position. The tetrahydropyridine ring adopts a distorted half-chair conformation; the Q, θ, φ and ΔCs[C10] values for the above ring are 0.522 (3) Å, 129.4 (3)°, 93.1 (3)° and 101.3 (4)°, respectively. The phenyl group attached to the tetrahydropyridine ring is in a biaxial position. The C19—C24 phenyl ring forms dihedral angles of 80.98 (13) and 7.40 (14)°, respectively, with the C4—C9 and C12—C17 benzene rings. The C12—C17 and C26—C31 rings are oriented at a dihedral angle of 72.54 (14)°. The molecular structure is stabilized by C—H···O hydrogen bonds and N—H···π interactions (Table 1).
Bond lengths and angles are comparable with those in 3-benzyl-9-phenyl-2-tosyl-2,3,3a,4,9,9a-hexahydro-1H-pyrrolo[3,4-b]quinoline, (II), (Sudha et al., 2009). A superposition of the non-H atoms of the above molecule with those of the title molecule using XP in SHELXTL (Sheldrick, 2008), gave an r.m.s. deviation of 0.489 Å (Fig. 2). In both compounds, the pyrrolidine ring is trans-fused to the tetrahydropyridine ring but they differ in relative orientations of the phenyl rings.
In the solid state, screw-related molecules are linked into chains along the b axis by C—H···O hydrogen bonds and C—H···π interactions involving the C26—C31 ring (Table 1). Adjacent inversion-related chains interact via C—H···π interactions involving the C4—C9 and C12—C17 rings to form a two-dimensional network parallel to the bc plane (Fig.3).
A comparison of crystal packing in (I) and (II) shows that the presence of the methyl group at 7-position completely changes the packing mode. Without the methyl group, the molecules are linked into a chain along the a axis by intermolecular C—H···π interactions. But the presence of the methyl group resulted in a two-dimensional network parallel to the bc plane, as discussed above.