organic compounds
7-(4-Methoxyphenyl)-4,9-dimethyl-N-(4-methylphenyl)-5,12-diazatetraphen-6-amine
aCentre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India, and bDepartment of Chemistry, Bharathiar University, Coimbatore 641 046, India
*Correspondence e-mail: dvelmurugan@unom.ac.in
In the title compound, C32H27N3O, the fused tetracycilc ring system is essentially planar [r.m.s. deviation = 0.07 (7) Å]. An intramolecular N—H⋯π(arene) interaction and a weak intramolecular C—H⋯N hydrogen bond may influence the molecular conformation. In the crystal, weak intermolecular C—H⋯N hydrogen bonds link the molecules into centrosymmetric dimers, forming R22(14) motifs. In addition, weak π–π stacking interactions with centroid–centroid distances in the range 3.578 (1)–3.739 (1) Å provide further stabilization.
Related literature
For the biological activity of naphthyridine derivatives, see: Gopalsamy et al. (2007); Kim et al. (2009); Nittoli et al. (2010); Bedard et al. (2000). For the structures of related naphthrydine derivatives, see: Peng et al. (2009); Seebacher et al . (2010); Vennila et al. (2010a,b). For standard bond lengths, see: Allen et al. (1987). For hydrogen-bond motifs, see: Bernstein et al. (1995).
Experimental
Crystal data
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Data collection
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Refinement
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Data collection: APEX2 (Bruker, 2007); cell SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
10.1107/S1600536811006209/lh5193sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811006209/lh5193Isup2.hkl
A mixture of 4',4''-dimethyl-2,4-bis-(N-phenylamino) quinoline (0.0010 mol) and p-methoxybenzoic acid (0.0011 mol) was added to polyphosphoric acid (3 g of P2O5 in 1.5 mL of H3PO4) and kept at 323-328K for 5 h. The reaction was monitored by TLC. After the completion of the reaction, the reaction mixture was poured into ice water and neutralised with saturated NaHCO3 solution to remove the excess of p-methoxy benzoic acid. The precipitate was filtered, dried and purified by
over silica gel using petroleum ether : ethyl acetate (98 : 2). The product was recrystallised using ethyl acetate.The H-atoms were positioned geometrically and treated as riding atoms: C—H =0.93 Å H-aromatic, C—H = 0.96 Å H-methyl, and N—H = 0.86 Å, with Uiso = k×Ueq(parent C or N-atom), where k = 1.5 for methyl H-atoms, and = 1.2 for all other H-atoms.
Data collection: APEX2 (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).C32H27N3O | F(000) = 992 |
Mr = 469.57 | Dx = 1.250 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 6327 reflections |
a = 8.3816 (6) Å | θ = 1.8–28.5° |
b = 23.1651 (13) Å | µ = 0.08 mm−1 |
c = 12.8548 (7) Å | T = 293 K |
β = 91.171 (3)° | Block, yellow |
V = 2495.4 (3) Å3 | 0.29 × 0.24 × 0.23 mm |
Z = 4 |
Bruker SMART APEXII area-detector diffractometer | 6239 independent reflections |
Radiation source: fine-focus sealed tube | 3904 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.029 |
ω and ϕ scans | θmax = 28.5°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | h = −11→11 |
Tmin = 0.978, Tmax = 0.983 | k = −29→30 |
24206 measured reflections | l = −17→16 |
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)] = 0.053 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.181 | H-atom parameters constrained |
S = 0.95 | w = 1/[σ2(Fo2) + (0.0992P)2 + 0.5542P] where P = (Fo2 + 2Fc2)/3 |
6239 reflections | (Δ/σ)max = 0.001 |
329 parameters | Δρmax = 0.27 e Å−3 |
0 restraints | Δρmin = −0.23 e Å−3 |
C32H27N3O | V = 2495.4 (3) Å3 |
Mr = 469.57 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 8.3816 (6) Å | µ = 0.08 mm−1 |
b = 23.1651 (13) Å | T = 293 K |
c = 12.8548 (7) Å | 0.29 × 0.24 × 0.23 mm |
β = 91.171 (3)° |
Bruker SMART APEXII area-detector diffractometer | 6239 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | 3904 reflections with I > 2σ(I) |
Tmin = 0.978, Tmax = 0.983 | Rint = 0.029 |
24206 measured reflections |
R[F2 > 2σ(F2)] = 0.053 | 0 restraints |
wR(F2) = 0.181 | H-atom parameters constrained |
S = 0.95 | Δρmax = 0.27 e Å−3 |
6239 reflections | Δρmin = −0.23 e Å−3 |
329 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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 | ||
C11 | 0.27001 (18) | 0.47982 (7) | 0.01559 (12) | 0.0415 (4) | |
N2 | 0.38310 (17) | 0.54757 (6) | 0.14162 (11) | 0.0481 (3) | |
C9 | 0.44758 (19) | 0.50366 (7) | 0.19420 (12) | 0.0437 (4) | |
C8 | 0.43129 (19) | 0.44464 (7) | 0.16148 (12) | 0.0419 (4) | |
C17 | 0.29497 (18) | 0.37335 (7) | 0.03664 (12) | 0.0416 (4) | |
C6 | 0.6097 (2) | 0.47172 (8) | 0.34423 (13) | 0.0506 (4) | |
C10 | 0.29963 (19) | 0.53681 (7) | 0.05320 (13) | 0.0452 (4) | |
C12 | 0.33652 (18) | 0.43309 (6) | 0.07278 (12) | 0.0411 (4) | |
C7 | 0.52499 (19) | 0.40261 (7) | 0.22420 (12) | 0.0445 (4) | |
C14 | 0.11930 (19) | 0.51950 (8) | −0.13214 (13) | 0.0488 (4) | |
N1 | 0.60278 (17) | 0.41521 (6) | 0.30973 (11) | 0.0509 (4) | |
C13 | 0.1761 (2) | 0.47325 (7) | −0.07674 (13) | 0.0471 (4) | |
H13 | 0.1524 | 0.4362 | −0.1004 | 0.056* | |
C5 | 0.5387 (2) | 0.51709 (7) | 0.28813 (13) | 0.0508 (4) | |
N3 | 0.53552 (18) | 0.34709 (6) | 0.18772 (12) | 0.0527 (4) | |
H3 | 0.4677 | 0.3388 | 0.1389 | 0.063* | |
C22 | 0.1889 (2) | 0.34023 (7) | 0.09339 (13) | 0.0467 (4) | |
H22 | 0.1425 | 0.3560 | 0.1520 | 0.056* | |
O1 | 0.1768 (2) | 0.20499 (5) | −0.04304 (11) | 0.0739 (4) | |
C20 | 0.2205 (2) | 0.26068 (7) | −0.02185 (14) | 0.0523 (4) | |
C16 | 0.2387 (2) | 0.58410 (7) | −0.00458 (15) | 0.0534 (4) | |
H16 | 0.2565 | 0.6215 | 0.0194 | 0.064* | |
C19 | 0.3250 (2) | 0.29293 (7) | −0.08088 (14) | 0.0548 (5) | |
H19 | 0.3705 | 0.2770 | −0.1397 | 0.066* | |
C18 | 0.3608 (2) | 0.34901 (7) | −0.05119 (13) | 0.0493 (4) | |
H18 | 0.4302 | 0.3707 | −0.0909 | 0.059* | |
C15 | 0.1548 (2) | 0.57559 (8) | −0.09457 (16) | 0.0551 (5) | |
H15 | 0.1195 | 0.6074 | −0.1326 | 0.066* | |
C23 | 0.6376 (2) | 0.30140 (7) | 0.21616 (14) | 0.0517 (4) | |
C1 | 0.6987 (3) | 0.48302 (9) | 0.43698 (15) | 0.0646 (5) | |
C21 | 0.1515 (2) | 0.28481 (7) | 0.06463 (14) | 0.0529 (4) | |
H21 | 0.0798 | 0.2635 | 0.1033 | 0.063* | |
C33 | 0.0213 (2) | 0.51229 (9) | −0.23006 (15) | 0.0622 (5) | |
H33A | 0.0461 | 0.4759 | −0.2616 | 0.093* | |
H33B | 0.0449 | 0.5430 | −0.2774 | 0.093* | |
H33C | −0.0900 | 0.5133 | −0.2139 | 0.093* | |
C4 | 0.5588 (3) | 0.57407 (9) | 0.32314 (16) | 0.0680 (6) | |
H4 | 0.5125 | 0.6045 | 0.2861 | 0.082* | |
C26 | 0.8354 (2) | 0.20560 (8) | 0.25512 (18) | 0.0661 (5) | |
C28 | 0.7225 (3) | 0.29651 (9) | 0.30897 (17) | 0.0732 (6) | |
H28 | 0.7150 | 0.3250 | 0.3596 | 0.088* | |
C24 | 0.6517 (3) | 0.25781 (8) | 0.14459 (18) | 0.0736 (6) | |
H24 | 0.5944 | 0.2600 | 0.0820 | 0.088* | |
C25 | 0.7489 (3) | 0.21103 (9) | 0.1638 (2) | 0.0809 (7) | |
H25 | 0.7562 | 0.1823 | 0.1137 | 0.097* | |
C27 | 0.8194 (3) | 0.24844 (10) | 0.3259 (2) | 0.0813 (7) | |
H27 | 0.8757 | 0.2456 | 0.3888 | 0.098* | |
C29 | 0.7759 (3) | 0.43458 (11) | 0.49655 (17) | 0.0853 (7) | |
H29A | 0.8283 | 0.4496 | 0.5579 | 0.128* | |
H29B | 0.8529 | 0.4159 | 0.4537 | 0.128* | |
H29C | 0.6961 | 0.4072 | 0.5162 | 0.128* | |
C2 | 0.7139 (3) | 0.53922 (11) | 0.46798 (18) | 0.0831 (7) | |
H2 | 0.7713 | 0.5473 | 0.5289 | 0.100* | |
C30 | 0.9433 (3) | 0.15394 (10) | 0.2742 (2) | 0.0919 (8) | |
H30A | 1.0215 | 0.1521 | 0.2208 | 0.138* | |
H30B | 0.8806 | 0.1193 | 0.2731 | 0.138* | |
H30C | 0.9961 | 0.1578 | 0.3408 | 0.138* | |
C3 | 0.6470 (3) | 0.58475 (11) | 0.41220 (19) | 0.0859 (7) | |
H3A | 0.6619 | 0.6225 | 0.4351 | 0.103* | |
C32 | 0.2335 (5) | 0.18004 (10) | −0.13340 (19) | 0.1118 (11) | |
H32A | 0.2088 | 0.2046 | −0.1917 | 0.168* | |
H32B | 0.1839 | 0.1431 | −0.1439 | 0.168* | |
H32C | 0.3470 | 0.1752 | −0.1271 | 0.168* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C11 | 0.0348 (8) | 0.0400 (8) | 0.0498 (8) | −0.0001 (6) | 0.0044 (7) | 0.0023 (6) |
N2 | 0.0441 (8) | 0.0410 (7) | 0.0595 (8) | −0.0014 (6) | 0.0068 (7) | −0.0046 (6) |
C9 | 0.0387 (8) | 0.0436 (8) | 0.0490 (9) | −0.0023 (7) | 0.0078 (7) | −0.0036 (7) |
C8 | 0.0372 (8) | 0.0406 (8) | 0.0480 (8) | −0.0009 (6) | 0.0036 (7) | −0.0003 (6) |
C17 | 0.0391 (8) | 0.0385 (8) | 0.0467 (8) | 0.0003 (6) | −0.0060 (7) | 0.0025 (6) |
C6 | 0.0475 (10) | 0.0572 (10) | 0.0473 (9) | −0.0041 (8) | 0.0044 (8) | −0.0061 (7) |
C10 | 0.0363 (8) | 0.0414 (8) | 0.0582 (10) | −0.0002 (7) | 0.0083 (7) | 0.0000 (7) |
C12 | 0.0359 (8) | 0.0388 (8) | 0.0488 (8) | 0.0003 (6) | 0.0045 (7) | 0.0000 (6) |
C7 | 0.0388 (8) | 0.0462 (9) | 0.0484 (9) | −0.0013 (7) | 0.0007 (7) | 0.0010 (7) |
C14 | 0.0356 (8) | 0.0539 (10) | 0.0571 (10) | 0.0041 (7) | 0.0052 (7) | 0.0107 (7) |
N1 | 0.0479 (8) | 0.0564 (9) | 0.0483 (8) | −0.0009 (7) | −0.0005 (7) | −0.0016 (6) |
C13 | 0.0409 (9) | 0.0447 (9) | 0.0557 (9) | 0.0004 (7) | 0.0028 (7) | 0.0011 (7) |
C5 | 0.0494 (10) | 0.0535 (10) | 0.0497 (9) | −0.0064 (8) | 0.0061 (8) | −0.0097 (7) |
N3 | 0.0519 (9) | 0.0453 (8) | 0.0603 (9) | 0.0034 (6) | −0.0162 (7) | −0.0024 (6) |
C22 | 0.0419 (9) | 0.0458 (9) | 0.0522 (9) | 0.0014 (7) | −0.0011 (7) | 0.0018 (7) |
O1 | 0.1046 (12) | 0.0424 (7) | 0.0739 (9) | −0.0111 (7) | −0.0147 (8) | −0.0056 (6) |
C20 | 0.0616 (11) | 0.0377 (8) | 0.0567 (10) | −0.0031 (7) | −0.0163 (8) | 0.0017 (7) |
C16 | 0.0444 (9) | 0.0409 (9) | 0.0751 (12) | 0.0041 (7) | 0.0066 (9) | 0.0035 (8) |
C19 | 0.0659 (12) | 0.0489 (10) | 0.0494 (9) | 0.0032 (8) | −0.0044 (8) | −0.0061 (7) |
C18 | 0.0534 (10) | 0.0451 (9) | 0.0496 (9) | −0.0033 (7) | 0.0024 (8) | 0.0002 (7) |
C15 | 0.0403 (9) | 0.0505 (10) | 0.0746 (12) | 0.0077 (8) | 0.0063 (9) | 0.0160 (8) |
C23 | 0.0469 (10) | 0.0455 (9) | 0.0623 (10) | 0.0013 (7) | −0.0075 (8) | 0.0051 (8) |
C1 | 0.0648 (13) | 0.0780 (14) | 0.0509 (10) | −0.0048 (10) | −0.0003 (9) | −0.0100 (9) |
C21 | 0.0513 (10) | 0.0452 (9) | 0.0621 (10) | −0.0072 (8) | −0.0033 (8) | 0.0074 (8) |
C33 | 0.0490 (11) | 0.0744 (13) | 0.0630 (12) | 0.0031 (9) | −0.0017 (9) | 0.0145 (9) |
C4 | 0.0821 (15) | 0.0560 (11) | 0.0660 (12) | −0.0063 (10) | 0.0021 (11) | −0.0150 (9) |
C26 | 0.0553 (12) | 0.0505 (11) | 0.0919 (15) | 0.0047 (9) | −0.0111 (11) | 0.0118 (10) |
C28 | 0.0827 (15) | 0.0653 (13) | 0.0705 (13) | 0.0191 (11) | −0.0235 (11) | −0.0045 (10) |
C24 | 0.0892 (16) | 0.0523 (11) | 0.0778 (13) | 0.0153 (10) | −0.0311 (12) | −0.0069 (10) |
C25 | 0.0951 (18) | 0.0512 (12) | 0.0953 (16) | 0.0183 (11) | −0.0236 (14) | −0.0100 (11) |
C27 | 0.0821 (16) | 0.0747 (14) | 0.0857 (15) | 0.0190 (12) | −0.0317 (13) | 0.0073 (12) |
C29 | 0.0919 (18) | 0.1044 (19) | 0.0587 (12) | 0.0039 (14) | −0.0180 (12) | −0.0034 (12) |
C2 | 0.0952 (19) | 0.0912 (18) | 0.0624 (13) | −0.0107 (14) | −0.0125 (12) | −0.0218 (12) |
C30 | 0.0839 (17) | 0.0659 (14) | 0.125 (2) | 0.0222 (12) | −0.0138 (15) | 0.0159 (13) |
C3 | 0.109 (2) | 0.0742 (15) | 0.0737 (14) | −0.0156 (14) | −0.0092 (14) | −0.0303 (12) |
C32 | 0.209 (4) | 0.0567 (14) | 0.0696 (14) | −0.0158 (17) | −0.0010 (18) | −0.0162 (11) |
C11—C12 | 1.416 (2) | C19—H19 | 0.9300 |
C11—C13 | 1.419 (2) | C18—H18 | 0.9300 |
C11—C10 | 1.426 (2) | C15—H15 | 0.9300 |
N2—C9 | 1.330 (2) | C23—C24 | 1.373 (3) |
N2—C10 | 1.346 (2) | C23—C28 | 1.381 (3) |
C9—C8 | 1.436 (2) | C1—C2 | 1.367 (3) |
C9—C5 | 1.449 (2) | C1—C29 | 1.498 (3) |
C8—C12 | 1.402 (2) | C21—H21 | 0.9300 |
C8—C7 | 1.479 (2) | C33—H33A | 0.9600 |
C17—C18 | 1.386 (2) | C33—H33B | 0.9600 |
C17—C22 | 1.392 (2) | C33—H33C | 0.9600 |
C17—C12 | 1.498 (2) | C4—C3 | 1.372 (3) |
C6—N1 | 1.383 (2) | C4—H4 | 0.9300 |
C6—C5 | 1.400 (3) | C26—C27 | 1.355 (3) |
C6—C1 | 1.418 (3) | C26—C25 | 1.373 (3) |
C10—C16 | 1.413 (2) | C26—C30 | 1.517 (3) |
C7—N1 | 1.300 (2) | C28—C27 | 1.393 (3) |
C7—N3 | 1.372 (2) | C28—H28 | 0.9300 |
C14—C13 | 1.367 (2) | C24—C25 | 1.375 (3) |
C14—C15 | 1.416 (3) | C24—H24 | 0.9300 |
C14—C33 | 1.498 (3) | C25—H25 | 0.9300 |
C13—H13 | 0.9300 | C27—H27 | 0.9300 |
C5—C4 | 1.403 (2) | C29—H29A | 0.9600 |
N3—C23 | 1.405 (2) | C29—H29B | 0.9600 |
N3—H3 | 0.8600 | C29—H29C | 0.9600 |
C22—C21 | 1.371 (2) | C2—C3 | 1.387 (4) |
C22—H22 | 0.9300 | C2—H2 | 0.9300 |
O1—C20 | 1.367 (2) | C30—H30A | 0.9600 |
O1—C32 | 1.390 (3) | C30—H30B | 0.9600 |
C20—C19 | 1.388 (3) | C30—H30C | 0.9600 |
C20—C21 | 1.381 (3) | C3—H3A | 0.9300 |
C16—C15 | 1.356 (3) | C32—H32A | 0.9600 |
C16—H16 | 0.9300 | C32—H32B | 0.9600 |
C19—C18 | 1.385 (2) | C32—H32C | 0.9600 |
C12—C11—C13 | 123.91 (14) | C24—C23—C28 | 117.96 (17) |
C12—C11—C10 | 117.89 (15) | C24—C23—N3 | 116.10 (16) |
C13—C11—C10 | 118.20 (14) | C28—C23—N3 | 125.94 (17) |
C9—N2—C10 | 119.11 (14) | C2—C1—C6 | 117.7 (2) |
N2—C9—C8 | 122.97 (15) | C2—C1—C29 | 121.8 (2) |
N2—C9—C5 | 117.45 (15) | C6—C1—C29 | 120.41 (19) |
C8—C9—C5 | 119.59 (15) | C22—C21—C20 | 119.92 (16) |
C12—C8—C9 | 117.95 (15) | C22—C21—H21 | 120.0 |
C12—C8—C7 | 127.10 (14) | C20—C21—H21 | 120.0 |
C9—C8—C7 | 114.88 (14) | C14—C33—H33A | 109.5 |
C18—C17—C22 | 118.13 (15) | C14—C33—H33B | 109.5 |
C18—C17—C12 | 122.29 (14) | H33A—C33—H33B | 109.5 |
C22—C17—C12 | 119.57 (14) | C14—C33—H33C | 109.5 |
N1—C6—C5 | 122.05 (16) | H33A—C33—H33C | 109.5 |
N1—C6—C1 | 117.53 (17) | H33B—C33—H33C | 109.5 |
C5—C6—C1 | 120.34 (17) | C3—C4—C5 | 119.7 (2) |
N2—C10—C16 | 118.44 (15) | C3—C4—H4 | 120.1 |
N2—C10—C11 | 122.79 (15) | C5—C4—H4 | 120.1 |
C16—C10—C11 | 118.76 (16) | C27—C26—C25 | 116.68 (19) |
C8—C12—C11 | 119.12 (14) | C27—C26—C30 | 122.4 (2) |
C8—C12—C17 | 123.54 (14) | C25—C26—C30 | 120.9 (2) |
C11—C12—C17 | 117.28 (14) | C23—C28—C27 | 119.3 (2) |
N1—C7—N3 | 117.69 (15) | C23—C28—H28 | 120.4 |
N1—C7—C8 | 124.38 (15) | C27—C28—H28 | 120.4 |
N3—C7—C8 | 117.88 (15) | C23—C24—C25 | 121.2 (2) |
C13—C14—C15 | 118.26 (17) | C23—C24—H24 | 119.4 |
C13—C14—C33 | 121.96 (17) | C25—C24—H24 | 119.4 |
C15—C14—C33 | 119.78 (16) | C26—C25—C24 | 121.8 (2) |
C7—N1—C6 | 120.05 (15) | C26—C25—H25 | 119.1 |
C14—C13—C11 | 122.22 (16) | C24—C25—H25 | 119.1 |
C14—C13—H13 | 118.9 | C26—C27—C28 | 123.1 (2) |
C11—C13—H13 | 118.9 | C26—C27—H27 | 118.5 |
C6—C5—C4 | 119.60 (17) | C28—C27—H27 | 118.5 |
C6—C5—C9 | 118.62 (15) | C1—C29—H29A | 109.5 |
C4—C5—C9 | 121.78 (18) | C1—C29—H29B | 109.5 |
C7—N3—C23 | 131.31 (15) | H29A—C29—H29B | 109.5 |
C7—N3—H3 | 114.3 | C1—C29—H29C | 109.5 |
C23—N3—H3 | 114.3 | H29A—C29—H29C | 109.5 |
C21—C22—C17 | 121.33 (16) | H29B—C29—H29C | 109.5 |
C21—C22—H22 | 119.3 | C1—C2—C3 | 122.6 (2) |
C17—C22—H22 | 119.3 | C1—C2—H2 | 118.7 |
C20—O1—C32 | 117.64 (18) | C3—C2—H2 | 118.7 |
O1—C20—C19 | 124.64 (17) | C26—C30—H30A | 109.5 |
O1—C20—C21 | 115.29 (16) | C26—C30—H30B | 109.5 |
C19—C20—C21 | 120.07 (15) | H30A—C30—H30B | 109.5 |
C15—C16—C10 | 120.74 (16) | C26—C30—H30C | 109.5 |
C15—C16—H16 | 119.6 | H30A—C30—H30C | 109.5 |
C10—C16—H16 | 119.6 | H30B—C30—H30C | 109.5 |
C20—C19—C18 | 119.30 (16) | C4—C3—C2 | 119.9 (2) |
C20—C19—H19 | 120.3 | C4—C3—H3A | 120.0 |
C18—C19—H19 | 120.3 | C2—C3—H3A | 120.0 |
C17—C18—C19 | 121.22 (16) | O1—C32—H32A | 109.5 |
C17—C18—H18 | 119.4 | O1—C32—H32B | 109.5 |
C19—C18—H18 | 119.4 | H32A—C32—H32B | 109.5 |
C16—C15—C14 | 121.74 (16) | O1—C32—H32C | 109.5 |
C16—C15—H15 | 119.1 | H32A—C32—H32C | 109.5 |
C14—C15—H15 | 119.1 | H32B—C32—H32C | 109.5 |
C10—N2—C9—C8 | −0.6 (2) | C8—C9—C5—C4 | 179.71 (16) |
C10—N2—C9—C5 | 179.02 (13) | N1—C7—N3—C23 | −12.1 (3) |
N2—C9—C8—C12 | −3.1 (2) | C8—C7—N3—C23 | 165.47 (16) |
C5—C9—C8—C12 | 177.28 (13) | C18—C17—C22—C21 | 0.9 (2) |
N2—C9—C8—C7 | 174.06 (14) | C12—C17—C22—C21 | −178.05 (15) |
C5—C9—C8—C7 | −5.5 (2) | C32—O1—C20—C19 | −4.0 (3) |
C9—N2—C10—C16 | −176.83 (14) | C32—O1—C20—C21 | 175.4 (2) |
C9—N2—C10—C11 | 3.3 (2) | N2—C10—C16—C15 | 179.56 (15) |
C12—C11—C10—N2 | −2.1 (2) | C11—C10—C16—C15 | −0.5 (2) |
C13—C11—C10—N2 | 177.95 (14) | O1—C20—C19—C18 | −179.70 (17) |
C12—C11—C10—C16 | 177.95 (14) | C21—C20—C19—C18 | 0.9 (3) |
C13—C11—C10—C16 | −2.0 (2) | C22—C17—C18—C19 | −1.3 (3) |
C9—C8—C12—C11 | 4.1 (2) | C12—C17—C18—C19 | 177.59 (16) |
C7—C8—C12—C11 | −172.70 (14) | C20—C19—C18—C17 | 0.4 (3) |
C9—C8—C12—C17 | −173.20 (14) | C10—C16—C15—C14 | 2.5 (3) |
C7—C8—C12—C17 | 10.0 (2) | C13—C14—C15—C16 | −1.9 (2) |
C13—C11—C12—C8 | 178.23 (14) | C33—C14—C15—C16 | 177.88 (16) |
C10—C11—C12—C8 | −1.7 (2) | C7—N3—C23—C24 | −160.3 (2) |
C13—C11—C12—C17 | −4.3 (2) | C7—N3—C23—C28 | 20.4 (3) |
C10—C11—C12—C17 | 175.80 (13) | N1—C6—C1—C2 | 176.14 (18) |
C18—C17—C12—C8 | −107.91 (19) | C5—C6—C1—C2 | −0.9 (3) |
C22—C17—C12—C8 | 71.0 (2) | N1—C6—C1—C29 | −2.4 (3) |
C18—C17—C12—C11 | 74.7 (2) | C5—C6—C1—C29 | −179.42 (18) |
C22—C17—C12—C11 | −106.41 (17) | C17—C22—C21—C20 | 0.5 (3) |
C12—C8—C7—N1 | −175.40 (15) | O1—C20—C21—C22 | 179.22 (16) |
C9—C8—C7—N1 | 7.7 (2) | C19—C20—C21—C22 | −1.4 (3) |
C12—C8—C7—N3 | 7.2 (2) | C6—C5—C4—C3 | −0.3 (3) |
C9—C8—C7—N3 | −169.75 (14) | C9—C5—C4—C3 | −179.60 (19) |
N3—C7—N1—C6 | 173.38 (15) | C24—C23—C28—C27 | 0.7 (3) |
C8—C7—N1—C6 | −4.1 (2) | N3—C23—C28—C27 | −180.0 (2) |
C5—C6—N1—C7 | −1.9 (2) | C28—C23—C24—C25 | −0.9 (3) |
C1—C6—N1—C7 | −178.88 (16) | N3—C23—C24—C25 | 179.7 (2) |
C15—C14—C13—C11 | −0.7 (2) | C27—C26—C25—C24 | 0.5 (4) |
C33—C14—C13—C11 | 179.49 (14) | C30—C26—C25—C24 | −179.3 (2) |
C12—C11—C13—C14 | −177.29 (15) | C23—C24—C25—C26 | 0.3 (4) |
C10—C11—C13—C14 | 2.6 (2) | C25—C26—C27—C28 | −0.7 (4) |
N1—C6—C5—C4 | −175.65 (17) | C30—C26—C27—C28 | 179.1 (2) |
C1—C6—C5—C4 | 1.2 (3) | C23—C28—C27—C26 | 0.1 (4) |
N1—C6—C5—C9 | 3.7 (2) | C6—C1—C2—C3 | −0.4 (4) |
C1—C6—C5—C9 | −179.45 (15) | C29—C1—C2—C3 | 178.1 (2) |
N2—C9—C5—C6 | −179.17 (14) | C5—C4—C3—C2 | −0.9 (4) |
C8—C9—C5—C6 | 0.4 (2) | C1—C2—C3—C4 | 1.3 (4) |
N2—C9—C5—C4 | 0.1 (2) |
Cg is the centroid of the C17–C22 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3···Cg | 0.86 | 2.48 | 3.336 (3) | 176 |
C28—H28···N1 | 0.93 | 2.37 | 2.927 (3) | 118 |
C18—H18···N2i | 0.93 | 2.55 | 3.435 (2) | 159 |
Symmetry code: (i) −x+1, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | C32H27N3O |
Mr | 469.57 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 293 |
a, b, c (Å) | 8.3816 (6), 23.1651 (13), 12.8548 (7) |
β (°) | 91.171 (3) |
V (Å3) | 2495.4 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.08 |
Crystal size (mm) | 0.29 × 0.24 × 0.23 |
Data collection | |
Diffractometer | Bruker SMART APEXII area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2004) |
Tmin, Tmax | 0.978, 0.983 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 24206, 6239, 3904 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.671 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.053, 0.181, 0.95 |
No. of reflections | 6239 |
No. of parameters | 329 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.27, −0.23 |
Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997), SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).
Cg is the centroid of the C17–C22 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3···Cg | 0.86 | 2.48 | 3.336 (3) | 176 |
C28—H28···N1 | 0.93 | 2.37 | 2.927 (3) | 118 |
C18—H18···N2i | 0.93 | 2.55 | 3.435 (2) | 159 |
Symmetry code: (i) −x+1, −y+1, −z. |
Acknowledgements
KNV thanks the CSIR, New Delhi, for financial assistance in the form of a Senior Research Fellowship. DV acknowledges the Department of Science and Technology (DST) for providing data-collection facilities under the TBI program and also thanks the DST for financial support under the UGC–SAP and DST–FIST programs.
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.
Dibenzo-naphthyridine analogs have been reported to be good Phosphoinositide-Dependent Kinase (PDK-1) inhibitors. Gopalsamy et al. (2007) and Kim et al. (2009) have described the synthesis and structure activity relationship analysis of a novel series of benzo[c][2,7]naphthyridines as potent PDK-1 inhibitors. Recently a few X-ray crystal structures of PDK-1 and dibenzo[2,7] naphthyridine analog complexes have been reported (Gopalsamy et al., 2007; Nittoli et al., 2010). A series of dibenzo-naphthyridines were sucessfully tested for anticancer assays (Gopalsamy et al., 2007; Nittoli et al., 2010). The naphthyridine compounds were also proven to exhibit potent activity against human cytomegalovirus (Bedard et al. , 2000). As we are focussing on heterocyclic naphthyridine derivatives with potential biological properties, the crystal structure of the title compound was determined.
The molecular structure of the title compound is shown in Fig. 1. The bond lengths and angles are in the normal ranges (Allen et al., 1987). The fused tetracyclic ring system is essentially planar in geometry as was previously reported for a related compounds (Vennila et al., 2010, 2011; Seebacher et al. 2010; Peng et al. 2009). An intramolecular N—H···π(arene) interaction and a weak intramolecular C—H···N hydrogen bond may influence the molecular conformation. In the crystal, weak intermolecular C—H···N hydrogen bonds link the molecules into centrosymmetric dimers forming R22(14) motifs (Bernstein et al., 1995) (see Fig. 2). In addition, weak π–π stacking interactions with centroid to centroid distances in the range 3.578 (1) - 3.739 (1) Å provide additional stabilization.