Literature DB >> 21522616

2,9-Dimethyl-7-phenyl-N-(4-methyl-phen-yl)dibenzo[b,h][1,6]naphthyridin-6-amine.

K N Vennila, M Manoj, K Prabha, K J Rajendra Prasad, D Velmurugan.   

Abstract

The title compound, C(31)H(25)N(3), was synthesized from 6,4',4''-trimethyl-2,4-bis-(N-phenyl-amino)-quinoline and is the first structural example containing a phenyl and phenyl-amino fragment attached to a fused dibenzo[1,6]naphthyridine moiety. The fused tetra-cyclic ring system is essentially planar [r.m.s. deviation = 0.08 (3) Å]. The phenyl ring and the phenyl-amino group are inclined by 82.68 (6) and 35.31 (5)°, respectively, to the mean plane of the fused tetra-cyclic ring system. A weak intra-molecular N-H⋯π(arene) inter-action may in part influence the conformation of the mol-ecule. In the crystal, mol-ecules are linked by weak inter-molecular C-H⋯N hydrogen bonds into centrosymmetric dimers. Additional stabilization is provided by weak C-H⋯π and π-π stacking inter-actions [centroid-centroid distances = 3.834 (2) and 3.898 (1) Å].

Entities:  

Year:  2010        PMID: 21522616      PMCID: PMC3050252          DOI: 10.1107/S1600536810051196

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For the biological activity of [1,6]naphthyridine derivatives, see: Ruchelman et al. (2003 ▶, 2005 ▶); Hinschberger et al. (2003 ▶); Bedard et al. (2000 ▶); Feng et al. (2008 ▶). For the synthesis of the title compound, see: Manoj & Rajendra Prasad (2009 ▶). For the crystal structures of other [1,6]naphthrydine derivatives, see: Peng et al. (2009 ▶); Sivakumar et al. (2003 ▶); Seebacher et al. (2010 ▶); Vennila et al. (2010 ▶). For bond-length data, see: Allen et al. (1987 ▶).

Experimental

Crystal data

C31H25N3 M = 439.54 Monoclinic, a = 11.9390 (4) Å b = 10.5595 (4) Å c = 19.6084 (7) Å β = 107.369 (2)° V = 2359.31 (15) Å3 Z = 4 Mo Kα radiation μ = 0.07 mm−1 T = 293 K 0.30 × 0.20 × 0.20 mm

Data collection

Bruker APEXII CCD diffractometer Absorption correction: multi-scan (SADABS; Bruker, 2004 ▶) T min = 0.982, T max = 0.986 17909 measured reflections 2938 independent reflections 2197 reflections with I > 2σ(I) R int = 0.037 θmax = 22.1°

Refinement

R[F 2 > 2σ(F 2)] = 0.042 wR(F 2) = 0.132 S = 1.07 2938 reflections 310 parameters H-atom parameters constrained Δρmax = 0.21 e Å−3 Δρmin = −0.23 e Å−3 Data collection: APEX2 (Bruker, 2004 ▶); cell refinement: APEX2 and SAINT (Bruker, 2004 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: ORTEPII (Johnson, 1976) ▶; software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009 ▶). Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536810051196/lh5177sup1.cif Structure factors: contains datablocks I. DOI: 10.1107/S1600536810051196/lh5177Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C31H25N3F(000) = 928
Mr = 439.54Dx = 1.237 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybcCell parameters from 2938 reflections
a = 11.9390 (4) Åθ = 2.2–21.2°
b = 10.5595 (4) ŵ = 0.07 mm1
c = 19.6084 (7) ÅT = 293 K
β = 107.369 (2)°Prismatic, yellow
V = 2359.31 (15) Å30.30 × 0.20 × 0.20 mm
Z = 4
Bruker APEXII CCD diffractometer2938 independent reflections
Radiation source: fine-focus sealed tube2197 reflections with I > 2σ(I)
graphiteRint = 0.037
ω and φ scansθmax = 22.1°, θmin = 1.8°
Absorption correction: multi-scan (SADABS; Bruker, 2004)h = −12→12
Tmin = 0.982, Tmax = 0.986k = −11→11
17909 measured reflectionsl = −20→20
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.042Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.132H-atom parameters constrained
S = 1.07w = 1/[σ2(Fo2) + (0.0713P)2 + 0.4411P] where P = (Fo2 + 2Fc2)/3
2938 reflections(Δ/σ)max = 0.034
310 parametersΔρmax = 0.21 e Å3
0 restraintsΔρmin = −0.23 e Å3
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.
xyzUiso*/Ueq
C20.21879 (18)0.4613 (2)0.03581 (11)0.0434 (6)
N10.32355 (16)0.27439 (18)0.01274 (10)0.0508 (5)
N20.12176 (16)0.44039 (18)0.12785 (10)0.0529 (5)
C30.18596 (18)0.3921 (2)0.08942 (12)0.0448 (6)
C40.22420 (18)0.2617 (2)0.10461 (12)0.0448 (6)
C120.08099 (19)0.5597 (2)0.11381 (12)0.0511 (6)
N30.32400 (17)0.45075 (18)−0.05365 (10)0.0569 (6)
H30.30310.5288−0.06070.068*
C110.10670 (18)0.6366 (2)0.06154 (12)0.0461 (6)
C50.29150 (19)0.2088 (2)0.06518 (12)0.0473 (6)
C10.29049 (18)0.3908 (2)−0.00132 (12)0.0459 (6)
C100.18035 (18)0.5874 (2)0.02346 (11)0.0448 (6)
C90.19467 (19)0.1887 (2)0.15606 (12)0.0512 (6)
H90.14990.22500.18240.061*
C80.2296 (2)0.0654 (2)0.16883 (12)0.0523 (6)
C170.21691 (19)0.6767 (2)−0.02498 (13)0.0464 (6)
C230.38787 (19)0.4030 (2)−0.09768 (12)0.0480 (6)
C160.0570 (2)0.7604 (2)0.05065 (13)0.0546 (6)
H160.07410.81280.01690.066*
C60.3278 (2)0.0832 (2)0.07839 (13)0.0592 (7)
H60.37360.04650.05280.071*
C14−0.0376 (2)0.7257 (3)0.13967 (14)0.0659 (7)
H14−0.08580.75540.16570.079*
C130.0083 (2)0.6078 (3)0.15287 (14)0.0666 (7)
H13−0.00820.55810.18790.080*
C70.2968 (2)0.0136 (2)0.12858 (13)0.0604 (7)
H70.3210−0.07020.13610.073*
C240.4578 (2)0.4875 (2)−0.11974 (13)0.0548 (6)
H240.46600.5699−0.10220.066*
C15−0.0144 (2)0.8045 (2)0.08782 (14)0.0575 (7)
C290.1979 (2)−0.0121 (3)0.22479 (14)0.0678 (8)
H29A0.14300.03400.24240.102*
H29B0.2674−0.02920.26350.102*
H29C0.1632−0.09060.20420.102*
C220.1465 (2)0.7020 (2)−0.09377 (14)0.0617 (7)
H220.07360.6633−0.11120.074*
C280.3782 (2)0.2810 (2)−0.12414 (13)0.0571 (7)
H280.33230.2220−0.10940.069*
C270.4362 (2)0.2465 (3)−0.17227 (13)0.0632 (7)
H270.42810.1641−0.18980.076*
C260.5057 (2)0.3298 (3)−0.19527 (13)0.0617 (7)
C250.5157 (2)0.4509 (3)−0.16770 (13)0.0609 (7)
H250.56280.5093−0.18180.073*
C180.3242 (2)0.7371 (2)−0.00024 (15)0.0591 (7)
H180.37140.72200.04620.071*
C210.1851 (3)0.7849 (3)−0.13643 (16)0.0780 (9)
H210.13800.8018−0.18270.094*
C30−0.0682 (2)0.9343 (2)0.07514 (16)0.0744 (8)
H30A−0.01150.99590.09990.112*
H30B−0.13530.93750.09250.112*
H30C−0.09210.95250.02490.112*
C200.2927 (3)0.8426 (3)−0.1109 (2)0.0818 (10)
H200.31830.8980−0.13990.098*
C190.3623 (3)0.8190 (3)−0.04288 (19)0.0752 (8)
H190.43510.8582−0.02570.090*
C310.5664 (3)0.2936 (3)−0.24940 (15)0.0941 (11)
H31A0.52550.3305−0.29480.141*
H31B0.56660.2031−0.25390.141*
H31C0.64570.3242−0.23410.141*
U11U22U33U12U13U23
C20.0396 (12)0.0431 (14)0.0481 (14)0.0009 (10)0.0139 (11)−0.0022 (11)
N10.0549 (12)0.0442 (13)0.0578 (13)0.0076 (9)0.0240 (10)0.0019 (10)
N20.0570 (12)0.0496 (13)0.0591 (13)0.0049 (10)0.0277 (10)0.0003 (10)
C30.0415 (13)0.0463 (14)0.0475 (14)0.0003 (10)0.0149 (11)−0.0041 (11)
C40.0427 (13)0.0444 (14)0.0461 (14)−0.0006 (10)0.0115 (11)−0.0010 (11)
C120.0506 (14)0.0493 (16)0.0578 (15)0.0032 (12)0.0228 (12)−0.0040 (13)
N30.0722 (14)0.0440 (12)0.0677 (14)0.0125 (10)0.0410 (12)0.0060 (10)
C110.0436 (13)0.0410 (14)0.0549 (15)0.0023 (10)0.0165 (11)−0.0046 (11)
C50.0470 (13)0.0435 (15)0.0508 (14)0.0027 (11)0.0138 (11)−0.0007 (12)
C10.0434 (13)0.0448 (15)0.0507 (15)0.0025 (11)0.0158 (11)−0.0020 (12)
C100.0422 (13)0.0435 (15)0.0485 (14)0.0001 (10)0.0133 (11)−0.0023 (11)
C90.0489 (14)0.0526 (17)0.0526 (15)0.0011 (11)0.0158 (12)−0.0003 (12)
C80.0520 (14)0.0495 (16)0.0509 (15)−0.0005 (12)0.0088 (12)0.0042 (12)
C170.0485 (14)0.0387 (14)0.0565 (16)0.0069 (11)0.0225 (12)0.0006 (12)
C230.0508 (14)0.0473 (15)0.0492 (14)0.0090 (11)0.0198 (12)0.0027 (12)
C160.0553 (14)0.0475 (15)0.0620 (16)0.0045 (11)0.0189 (13)−0.0021 (12)
C60.0664 (16)0.0510 (17)0.0650 (17)0.0116 (13)0.0266 (14)0.0006 (13)
C140.0642 (16)0.0645 (19)0.080 (2)0.0080 (14)0.0376 (15)−0.0138 (15)
C130.0743 (18)0.0638 (19)0.0756 (18)0.0079 (14)0.0437 (15)−0.0024 (15)
C70.0693 (17)0.0465 (16)0.0641 (18)0.0089 (12)0.0178 (14)0.0072 (13)
C240.0616 (15)0.0505 (16)0.0568 (16)0.0037 (12)0.0244 (13)0.0030 (12)
C150.0507 (14)0.0545 (16)0.0683 (17)0.0057 (12)0.0193 (13)−0.0115 (14)
C290.0722 (18)0.0643 (18)0.0665 (18)−0.0023 (13)0.0200 (14)0.0124 (14)
C220.0666 (16)0.0567 (17)0.0641 (18)0.0094 (13)0.0230 (15)0.0042 (14)
C280.0601 (15)0.0553 (17)0.0623 (16)0.0010 (12)0.0280 (13)−0.0026 (13)
C270.0730 (17)0.0601 (17)0.0597 (17)0.0098 (14)0.0248 (14)−0.0055 (13)
C260.0681 (17)0.071 (2)0.0508 (16)0.0211 (14)0.0254 (13)0.0070 (14)
C250.0569 (15)0.073 (2)0.0594 (16)0.0070 (13)0.0274 (13)0.0154 (15)
C180.0631 (16)0.0503 (16)0.0694 (17)−0.0022 (13)0.0282 (14)−0.0012 (13)
C210.111 (3)0.070 (2)0.0632 (19)0.0262 (19)0.0413 (18)0.0143 (16)
C300.0693 (17)0.0624 (18)0.091 (2)0.0197 (14)0.0233 (15)−0.0106 (16)
C200.118 (3)0.0528 (19)0.105 (3)0.0048 (18)0.079 (2)0.0082 (18)
C190.084 (2)0.0567 (19)0.101 (3)−0.0073 (15)0.052 (2)−0.0060 (18)
C310.115 (3)0.111 (3)0.076 (2)0.033 (2)0.058 (2)0.0119 (19)
C2—C101.406 (3)C14—C151.403 (3)
C2—C31.428 (3)C14—H140.9300
C2—C11.480 (3)C13—H130.9300
N1—C11.295 (3)C7—H70.9300
N1—C51.385 (3)C24—C251.379 (3)
N2—C31.327 (3)C24—H240.9300
N2—C121.349 (3)C15—C301.503 (3)
C3—C41.453 (3)C29—H29A0.9600
C4—C51.388 (3)C29—H29B0.9600
C4—C91.396 (3)C29—H29C0.9600
C12—C111.411 (3)C22—C211.381 (4)
C12—C131.412 (3)C22—H220.9300
N3—C11.364 (3)C28—C271.376 (3)
N3—C231.405 (3)C28—H280.9300
N3—H30.8600C27—C261.374 (4)
C11—C101.412 (3)C27—H270.9300
C11—C161.424 (3)C26—C251.380 (4)
C5—C61.396 (3)C26—C311.502 (3)
C10—C171.493 (3)C25—H250.9300
C9—C81.368 (3)C18—C191.371 (4)
C9—H90.9300C18—H180.9300
C8—C71.394 (3)C21—C201.374 (4)
C8—C291.505 (3)C21—H210.9300
C17—C181.383 (3)C30—H30A0.9600
C17—C221.386 (3)C30—H30B0.9600
C23—C241.377 (3)C30—H30C0.9600
C23—C281.381 (3)C20—C191.367 (4)
C16—C151.359 (3)C20—H200.9300
C16—H160.9300C19—H190.9300
C6—C71.365 (3)C31—H31A0.9600
C6—H60.9300C31—H31B0.9600
C14—C131.354 (3)C31—H31C0.9600
C10—C2—C3117.67 (19)C6—C7—H7119.2
C10—C2—C1126.8 (2)C8—C7—H7119.2
C3—C2—C1115.5 (2)C23—C24—C25120.4 (2)
C1—N1—C5119.88 (18)C23—C24—H24119.8
C3—N2—C12118.52 (19)C25—C24—H24119.8
N2—C3—C2123.6 (2)C16—C15—C14118.5 (2)
N2—C3—C4116.57 (19)C16—C15—C30121.9 (2)
C2—C3—C4119.82 (18)C14—C15—C30119.6 (2)
C5—C4—C9119.6 (2)C8—C29—H29A109.5
C5—C4—C3117.8 (2)C8—C29—H29B109.5
C9—C4—C3122.7 (2)H29A—C29—H29B109.5
N2—C12—C11122.84 (19)C8—C29—H29C109.5
N2—C12—C13117.9 (2)H29A—C29—H29C109.5
C11—C12—C13119.3 (2)H29B—C29—H29C109.5
C1—N3—C23129.1 (2)C21—C22—C17119.8 (3)
C1—N3—H3115.4C21—C22—H22120.1
C23—N3—H3115.4C17—C22—H22120.1
C10—C11—C12118.5 (2)C27—C28—C23120.1 (2)
C10—C11—C16123.7 (2)C27—C28—H28119.9
C12—C11—C16117.8 (2)C23—C28—H28119.9
N1—C5—C4123.1 (2)C28—C27—C26122.2 (3)
N1—C5—C6118.3 (2)C28—C27—H27118.9
C4—C5—C6118.6 (2)C26—C27—H27118.9
N1—C1—N3117.50 (19)C27—C26—C25117.1 (2)
N1—C1—C2123.9 (2)C27—C26—C31122.4 (3)
N3—C1—C2118.6 (2)C25—C26—C31120.6 (3)
C2—C10—C11118.7 (2)C24—C25—C26121.7 (2)
C2—C10—C17124.41 (19)C24—C25—H25119.2
C11—C10—C17116.81 (19)C26—C25—H25119.2
C8—C9—C4122.0 (2)C19—C18—C17121.2 (3)
C8—C9—H9119.0C19—C18—H18119.4
C4—C9—H9119.0C17—C18—H18119.4
C9—C8—C7117.7 (2)C20—C21—C22120.3 (3)
C9—C8—C29121.5 (2)C20—C21—H21119.9
C7—C8—C29120.8 (2)C22—C21—H21119.9
C18—C17—C22118.8 (2)C15—C30—H30A109.5
C18—C17—C10119.0 (2)C15—C30—H30B109.5
C22—C17—C10122.3 (2)H30A—C30—H30B109.5
C24—C23—C28118.5 (2)C15—C30—H30C109.5
C24—C23—N3116.8 (2)H30A—C30—H30C109.5
C28—C23—N3124.4 (2)H30B—C30—H30C109.5
C15—C16—C11122.3 (2)C19—C20—C21120.3 (3)
C15—C16—H16118.9C19—C20—H20119.8
C11—C16—H16118.9C21—C20—H20119.8
C7—C6—C5120.6 (2)C20—C19—C18119.6 (3)
C7—C6—H6119.7C20—C19—H19120.2
C5—C6—H6119.7C18—C19—H19120.2
C13—C14—C15121.8 (2)C26—C31—H31A109.5
C13—C14—H14119.1C26—C31—H31B109.5
C15—C14—H14119.1H31A—C31—H31B109.5
C14—C13—C12120.4 (2)C26—C31—H31C109.5
C14—C13—H13119.8H31A—C31—H31C109.5
C12—C13—H13119.8H31B—C31—H31C109.5
C6—C7—C8121.6 (2)
C12—N2—C3—C22.8 (3)C4—C9—C8—C70.2 (3)
C12—N2—C3—C4−177.8 (2)C4—C9—C8—C29179.5 (2)
C10—C2—C3—N2−0.1 (3)C2—C10—C17—C18−80.6 (3)
C1—C2—C3—N2−179.91 (19)C11—C10—C17—C1896.2 (3)
C10—C2—C3—C4−179.53 (19)C2—C10—C17—C22100.0 (3)
C1—C2—C3—C40.6 (3)C11—C10—C17—C22−83.2 (3)
N2—C3—C4—C5180.0 (2)C1—N3—C23—C24−149.1 (2)
C2—C3—C4—C5−0.5 (3)C1—N3—C23—C2836.0 (4)
N2—C3—C4—C90.8 (3)C10—C11—C16—C15179.4 (2)
C2—C3—C4—C9−179.7 (2)C12—C11—C16—C15−1.0 (3)
C3—N2—C12—C11−2.0 (3)N1—C5—C6—C7−178.8 (2)
C3—N2—C12—C13177.1 (2)C4—C5—C6—C70.6 (4)
N2—C12—C11—C10−1.4 (3)C15—C14—C13—C12−0.5 (4)
C13—C12—C11—C10179.5 (2)N2—C12—C13—C14−178.3 (2)
N2—C12—C11—C16179.0 (2)C11—C12—C13—C140.9 (4)
C13—C12—C11—C16−0.1 (3)C5—C6—C7—C8−0.9 (4)
C1—N1—C5—C40.0 (3)C9—C8—C7—C60.4 (4)
C1—N1—C5—C6179.4 (2)C29—C8—C7—C6−178.9 (2)
C9—C4—C5—N1179.4 (2)C28—C23—C24—C250.6 (3)
C3—C4—C5—N10.2 (3)N3—C23—C24—C25−174.7 (2)
C9—C4—C5—C60.0 (3)C11—C16—C15—C141.4 (4)
C3—C4—C5—C6−179.2 (2)C11—C16—C15—C30−178.9 (2)
C5—N1—C1—N3−179.7 (2)C13—C14—C15—C16−0.6 (4)
C5—N1—C1—C20.1 (3)C13—C14—C15—C30179.7 (2)
C23—N3—C1—N12.3 (4)C18—C17—C22—C211.0 (3)
C23—N3—C1—C2−177.5 (2)C10—C17—C22—C21−179.6 (2)
C10—C2—C1—N1179.7 (2)C24—C23—C28—C27−0.9 (4)
C3—C2—C1—N1−0.5 (3)N3—C23—C28—C27173.9 (2)
C10—C2—C1—N3−0.4 (3)C23—C28—C27—C260.5 (4)
C3—C2—C1—N3179.37 (19)C28—C27—C26—C250.3 (4)
C3—C2—C10—C11−3.4 (3)C28—C27—C26—C31−178.2 (2)
C1—C2—C10—C11176.4 (2)C23—C24—C25—C260.2 (4)
C3—C2—C10—C17173.4 (2)C27—C26—C25—C24−0.7 (4)
C1—C2—C10—C17−6.8 (4)C31—C26—C25—C24177.8 (2)
C12—C11—C10—C24.1 (3)C22—C17—C18—C19−1.2 (4)
C16—C11—C10—C2−176.3 (2)C10—C17—C18—C19179.3 (2)
C12—C11—C10—C17−172.9 (2)C17—C22—C21—C20−0.2 (4)
C16—C11—C10—C176.6 (3)C22—C21—C20—C19−0.3 (4)
C5—C4—C9—C8−0.4 (3)C21—C20—C19—C180.1 (4)
C3—C4—C9—C8178.8 (2)C17—C18—C19—C200.7 (4)
Cg1 and Cg2 are the centroids of the C17–C22 and C23–C28 rings, respectively.
D—H···AD—HH···AD···AD—H···A
N3—H3···Cg10.862.513.364 (3)174
C18—H18···Cg2i0.932.623.495 (3)156
C29—H29B···Cg2ii0.962.903.622 (3)133
C22—H22···N2iii0.932.513.419 (3)166
C28—H28···N10.932.492.946 (3)110
Cg(I)Cg(J)Centroid-to-Centroid
Cg(2)Cg(4i)3.834 (2)
Cg(3)Cg(3i)3.898 (1)
Table 1

Hydrogen-bond geometry (Å, °)

Cg1 and Cg2 are the centroids of the C17–C22 and C23–C28 rings, respectively.

D—H⋯AD—HH⋯ADAD—H⋯A
N3—H3⋯Cg10.862.513.364 (3)174
C18—H18⋯Cg2i0.932.623.495 (3)156
C29—H29BCg2ii0.962.903.622 (3)133
C22—H22⋯N2iii0.932.513.419 (3)166

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

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Authors:  B Sivakumar; K SethuSankar; U P Senthil Kumar; R Jeyaraman; D Velmurugan
Journal:  Acta Crystallogr C       Date:  2003-02-18       Impact factor: 1.172

2.  A short history of SHELX.

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

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Journal:  J Med Chem       Date:  2005-02-10       Impact factor: 7.446

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Journal:  Antimicrob Agents Chemother       Date:  2000-04       Impact factor: 5.191

5.  Synthesis of N-substituted 5-[2-(N-alkylamino)ethyl]dibenzo[c,h][1,6]naphthyridines as novel topoisomerase I-targeting antitumor agents.

Authors:  Wei Feng; Mavurapu Satyanarayana; Liang Cheng; Angela Liu; Yuan-Chin Tsai; Leroy F Liu; Edmond J LaVoie
Journal:  Bioorg Med Chem       Date:  2008-09-05       Impact factor: 3.641

6.  New benzo[h][1,6]naphthyridine and azepino[3,2-c]quinoline derivatives as selective antagonists of 5-HT4 receptors: binding profile and pharmacological characterization.

Authors:  Antoine Hinschberger; Sabrina Butt; Véronique Lelong; Michel Boulouard; Aline Dumuis; François Dauphin; Ronan Bureau; Bruno Pfeiffer; Pierre Renard; Sylvain Rault
Journal:  J Med Chem       Date:  2003-01-02       Impact factor: 7.446

7.  3,6-Dimethyl-1-phenyl-4-(2-thien-yl)-8-(2-thienylmethyl-ene)-5,6,7,8-tetra-hydro-1H-pyrazolo[3,4-b][1,6]naphthyridine.

Authors:  Juhua Peng; Zhengguo Han; Ning Ma; Shujiang Tu
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2009-04-25

8.  1,3-Diphenyl-3,4-dihydro-benzo[b][1,6]naphthyridine.

Authors:  Werner Seebacher; Robert Weis; Robert Saf; Ferdinand Belaj
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2010-04-17

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Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2010-08-28

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Journal:  Acta Crystallogr D Biol Crystallogr       Date:  2009-01-20
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1.  7-(4-Meth-oxy-phen-yl)-4,9-dimethyl-N-(4-methyl-phen-yl)-5,12-diaza-tetra-phen-6-amine.

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  1 in total

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