Literature DB >> 25484643

Crystal structure of 1-benzyl-4-(4-chloro-phen-yl)-2-imino-1,2,5,6,7,8,9,10-octa-hydro-cyclo-octa-[b]pyridine-3-carbo-nitrile.

R A Nagalakshmi1, J Suresh1, S Maharani2, R Ranjith Kumar2, P L Nilantha Lakshman3.   

Abstract

The title compound, C25H24ClN3, comprises a n class="Chemical">2-imino-pyridine ring fused with a cyclo-octane ring, which adopts a twist boat-chair conformation. In the crystal, C-H⋯N inter-actions form R 2 (2)(14) ring motifs and mol-ecules are further connected by weak C-H⋯π inter-actions. The resulting supra-molecular structure is a two-dimensional framework parallel to the ab plane.

Entities:  

Keywords:  Schiff bases; crystal structure; cyclo­octa­[b]pyridine; hydrogen bonding

Year:  2014        PMID: 25484643      PMCID: PMC4257162          DOI: 10.1107/S160053681401962X

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


Chemical context

Schiff bases are compounds carrying an n class="Chemical">imine or azomethine (—C=N—) functional group. They have gained importance in the medicinal and pharmaceutical fields due to their broad spectrum of biological activity, including anti-inflammatory, analgesic, anti­microbial, anti­convulsant, anti­tubercular (Aboul-Fadl et al., 2003 ▶), anti­cancer, anti­oxidant and anti­helminthic, among others. Schiff base derivatives are present in a number of processes, which prompted researchers to design novel heterocyclic/aryl Schiff bases with the aim of developing new environmentally friendly technologies (Bhattacharya et al., 2003 ▶). Schiff bases are also used as ligands for catalysts, inter­mediates in organic synthesis, dyes, pigments, and polymer stabilizers (Dhar & Taploo, 1982 ▶). Imino­pyridine complexes can be useful catalysts, and n class="Chemical">pyridones have been investigated extensively as valuable building blocks for many fused heterocyclic systems (Johns et al., 2003 ▶) displaying a wide range of biological and pharmacological activities. They exhibit, for example, anti­proliferative and anti­tubolin activities (Magedov et al., 2008 ▶). Many pyridin-2-one and 3-cyano-2-imino­pyridine derivatives also exhibit anti­proliferative activity (McNamara & Cook, 1987 ▶). As part of our studies in this area, the title compound was synthesized and we report herein on the mol­ecular and crystal structures of this compound.

Structural commentary

The mol­ecular structure of the title compound is shown in Fig. 1 ▶. The cyclo­octane ring adopts a twist boat–chair conformation (Wiberg, 2003 ▶), as found in similar structures (Vishnupriya et al., 2014a ▶,b ▶). As expected, the pyridine ring (atoms C1–C5/N3) is almost planar, with an r.m.s. deviation of 0.002 Å. The chloro­n class="Chemical">benzene (C31–C36) and phenyl (C13C18) rings are almost planar, with r.m.s. deviations of 0.005 and 0.004 Å, respectively. The sum of the angles around atom N3 is 359.8°, indicating that atom N3 is sp 2-hybridized. The C2—C38 N2 bond angle of 176.07 (19)° shows the linearity of the cyano group, a feature systematically observed in carbo­nitrile compounds. Nitrile atoms C38 and N2 are displaced from the mean plane of the pyridine ring by 0.0258 (1) and 0.0363 (1) Å, respectively. The imino C1=N1 bond length is 1.286 (2) Å. The imino group is nearly coplanar with the pyridine ring, as indicated by the N1=C1—N3—C5 torsion angle of −178.89 (14)°. The chloro­benzene ring is attached to the pyridine ring with a C2=C3—C31 C36 torsion angle of 100.99 (19)°, indicating a (+)anti­clinal conformation. The C33 C34 C35 bond angle of 121.11 (15)° deviates from 120° due to the presence of the chlorine substituent. The chlorine atom bonded to C34 deviates by 0.0446 (1) Å from the mean plane of the phenyl ring. The chlorine is attached to the benzene ring with a C32 C33 C34—Cl1 torsion angle of 178.95 (13)°. In the pyridine ring, the formal double bonds [C4=C5 = 1.375 (2) and C2=C3 = 1.369 (2) Å] are longer than standard C=C bonds (1.34 Å), while the other bond lengths are slightly shorter than standard C—C and C—N bond lengths, evidencing that there is a homo-conjugation effect for this ring.
Figure 1

The mol­ecular structure of the title compound, showing 20% probability displacement ellipsoids. All H atoms have been omitted for clarity.

Supra­molecular features

In the crystal, pairs of C—H⋯N inter­actions form (14) ring motifs (Bernstein et al., 1995 ▶), and the resulting dimers are further connected through weak C—H⋯π inter­actions involving the phenyl ring as acceptor (Table 1 ▶ and Fig. 2 ▶). The resulting supra­molecular structure is a two-dimensional framework parallel to the crystallographic ab plane.
Table 1

Hydrogen-bond geometry (Å, °)

Cg1 is the centroid of the phenyl ring.

D—H⋯A D—HH⋯A DA D—H⋯A
C32—H32⋯N1i 0.932.553.423 (2)156
C11—H11BCg1ii 0.972.913.5642 (2)126

Symmetry codes: (i) ; (ii) .

Figure 2

Partial packing diagram of the title compound. Dashed lines represent inter­molecular hydrogen bonds and C—H⋯π contacts. For clarity, H atoms not involved in hydrogen bonding have been omitted.

Database survey

Similar structures reported in the literature are 2-meth­oxy-4-(2-meth­oxy­phen­yl)-5,6,7,8,9,10-hexa­hydro­cyclo­octa­[b]pyrid­ine-3-carbo­nitrile (Vishnupriya et al., 2014a ▶) and 4-(2-fluoro­phen­yl)-2-meth­oxy-5,6,7,8,9,10-hexa­hydro­cyclo­octa­[b]pyridine-3-carbo­nitrile (Vishnupriya et al., 2014b ▶). In the structure reported here, the twisted conformation of the cyclo­octane ring and the planar conformation of the n class="Chemical">pyridine are similar to those found in the related structures. However, the C=NH functional group present in the title compound allows the formation of C—H⋯N hydrogen bonds, which are not present in the above-cited compounds. In the title compound, the bond lengths in the central pyridine ring span the range 1.369–1.447 Å, which compares well with the ranges observed in the similar structures (1.314–1.400 Å), but these bonds are systematically longer in the title compound, due to the substitution of the pyridine N atom by a benzyl group.

Synthesis and crystallization

Cyclo­octa­none (1 mmol), 4-chloro­benzaldehyde (1 mmol) and malono­nitrile (1 mmol) were mixed in ethanol (10 ml), and p-toluene­sulfonic acid (0.5 mmol) was added. The reaction mixture was refluxed for 2–3 h. After completion of the reaction (followed by thin-layer chromatography), the mixture was poured into crushed ice and extracted with n class="Chemical">ethyl acetate. The excess of solvent was removed under reduced pressure and the residue was chromatographed using a petroleum ether/ethyl acetate mixture (97:3 v/v) as eluent, to afford the pure product. The product was recrystallized from ethyl acetate, affording colourless crystals (m.p. 493 K; yield 71%).

Refinement

C-bound H atoms were placed in calculated positions and allowed to ride on their carrier atoms, with C—H = 0.93 (aromatic CH) or 0.97 Å (methyl­ene CH2). n class="Chemical">Imine atom H1 was found in a difference map and refined freely, with the N—H distance restrained to 0.84 (2) Å. Isotropic displacement parameters for H atoms were calculated as U iso(H) = 1.2U eq(C) for CH and CH2 groups, while the U iso factor for H1 was refined. Crystal data, data collection and structure refinement details are summarized in Table 2. ▶
Table 2

Experimental details

Crystal data
Chemical formulaC25H24ClN3
M r 401.92
Crystal system, space groupTriclinic, P
Temperature (K)293
a, b, c (Å)10.2319 (3), 10.5228 (3), 11.7767 (4)
α, β, γ (°)101.088 (2), 107.524 (2), 114.008 (2)
V3)1029.87 (5)
Z 2
Radiation typeMo Kα
μ (mm−1)0.20
Crystal size (mm)0.21 × 0.19 × 0.18
 
Data collection
DiffractometerBruker Kappa APEXII
Absorption correctionMulti-scan (SADABS; Bruker, 2004)
T min, T max 0.967, 0.974
No. of measured, independent and observed [I > 2σ(I)] reflections26728, 3842, 3094
R int 0.027
(sin θ/λ)max−1)0.606
 
Refinement
R[F 2 > 2σ(F 2)], wR(F 2), S 0.038, 0.105, 1.05
No. of reflections3842
No. of parameters266
No. of restraints2
H-atom treatmentH atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å−3)0.29, −0.33

Computer programs: APEX2 and SAINT (Bruker, 2004 ▶), SHELXS97 and SHELXL97 (Sheldrick, 2008 ▶) and PLATON (Spek, 2009 ▶).

Crystal structure: contains datablock(s) global, I. DOI: 10.1107/S160053681401962X/bh2503sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S160053681401962X/bh2503Isup2.hkl CCDC reference: 1021949 Additional supporting information: crystallographic information; 3D view; checkCIF report
C25H24ClN3Z = 2
Mr = 401.92F(000) = 424
Triclinic, P1Dx = 1.296 Mg m3
Hall symbol: -P 1Melting point: 493 K
a = 10.2319 (3) ÅMo Kα radiation, λ = 0.71073 Å
b = 10.5228 (3) ÅCell parameters from 2000 reflections
c = 11.7767 (4) Åθ = 2–31°
α = 101.088 (2)°µ = 0.20 mm1
β = 107.524 (2)°T = 293 K
γ = 114.008 (2)°Block, colourless
V = 1029.87 (5) Å30.21 × 0.19 × 0.18 mm
Bruker Kappa APEXII diffractometer3842 independent reflections
Radiation source: fine-focus sealed tube3094 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.027
Detector resolution: 0 pixels mm-1θmax = 25.5°, θmin = 2.3°
ω and φ scansh = −12→12
Absorption correction: multi-scan (SADABS; Bruker, 2004)k = −12→12
Tmin = 0.967, Tmax = 0.974l = −14→14
26728 measured reflections
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.038Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.105H atoms treated by a mixture of independent and constrained refinement
S = 1.05w = 1/[σ2(Fo2) + (0.0436P)2 + 0.4103P] where P = (Fo2 + 2Fc2)/3
3842 reflections(Δ/σ)max < 0.001
266 parametersΔρmax = 0.29 e Å3
2 restraintsΔρmin = −0.33 e Å3
0 constraints
xyzUiso*/Ueq
C10.41432 (18)0.89760 (17)0.60601 (14)0.0337 (3)
C20.43550 (18)0.80064 (17)0.51697 (14)0.0335 (3)
C30.31232 (18)0.67411 (17)0.41791 (14)0.0333 (3)
C40.15512 (18)0.63430 (17)0.39917 (14)0.0353 (3)
C50.13131 (18)0.72425 (17)0.48236 (14)0.0335 (3)
C6−0.03192 (19)0.6888 (2)0.46876 (16)0.0423 (4)
H6A−0.02650.72730.55280.051*
H6B−0.09880.58120.43610.051*
C7−0.1099 (2)0.7521 (2)0.38092 (18)0.0551 (5)
H7A−0.19750.74990.39830.066*
H7B−0.03380.85590.40380.066*
C8−0.1713 (2)0.6742 (3)0.23817 (19)0.0593 (5)
H8A−0.24270.56910.21600.071*
H8B−0.23250.71410.19400.071*
C9−0.0483 (2)0.6871 (2)0.18839 (19)0.0578 (5)
H9A0.05130.77490.24840.069*
H9B−0.07880.70290.10830.069*
C10−0.0220 (2)0.5534 (2)0.16653 (17)0.0557 (5)
H10A0.06280.57630.13920.067*
H10B−0.11690.46900.09700.067*
C110.0186 (2)0.50636 (19)0.28133 (17)0.0456 (4)
H11A−0.07330.46500.29930.055*
H11B0.04480.42870.26030.055*
C120.2287 (2)0.95489 (18)0.66307 (15)0.0397 (4)
H12A0.13710.95740.61020.048*
H12B0.31891.05450.69600.048*
C130.20272 (19)0.91624 (18)0.77398 (15)0.0386 (4)
C140.0786 (2)0.9164 (2)0.79756 (18)0.0550 (5)
H140.00850.93570.74260.066*
C150.0579 (3)0.8877 (3)0.9030 (2)0.0687 (7)
H15−0.02650.88710.91790.082*
C160.1608 (3)0.8603 (2)0.98475 (19)0.0672 (6)
H160.14750.84271.05600.081*
C170.2835 (2)0.8589 (2)0.96164 (18)0.0570 (5)
H170.35310.83951.01710.068*
C180.3047 (2)0.88603 (19)0.85687 (16)0.0444 (4)
H180.38810.88410.84170.053*
C310.34478 (18)0.57918 (17)0.33174 (15)0.0352 (3)
C320.3811 (2)0.61741 (19)0.23496 (17)0.0434 (4)
H320.38870.70540.22500.052*
C330.4064 (2)0.5266 (2)0.15252 (17)0.0458 (4)
H330.42910.55230.08680.055*
C340.39752 (19)0.39863 (18)0.16899 (15)0.0394 (4)
C350.3645 (2)0.3594 (2)0.26548 (18)0.0488 (4)
H350.36030.27280.27640.059*
C360.3376 (2)0.4497 (2)0.34654 (17)0.0472 (4)
H360.31430.42290.41180.057*
C380.59554 (19)0.84653 (18)0.53780 (15)0.0384 (4)
N10.52304 (18)1.01684 (16)0.70223 (14)0.0466 (4)
N20.72609 (18)0.88953 (19)0.56079 (16)0.0557 (4)
N30.25617 (15)0.85167 (14)0.58174 (11)0.0328 (3)
Cl10.42569 (7)0.28161 (6)0.06488 (5)0.06290 (17)
H10.612 (2)1.031 (2)0.703 (2)0.063 (6)*
U11U22U33U12U13U23
C10.0364 (8)0.0339 (8)0.0297 (8)0.0161 (7)0.0126 (6)0.0147 (7)
C20.0346 (7)0.0360 (8)0.0313 (8)0.0174 (7)0.0139 (6)0.0156 (6)
C30.0372 (8)0.0341 (8)0.0315 (8)0.0188 (7)0.0147 (7)0.0148 (7)
C40.0340 (8)0.0334 (8)0.0342 (8)0.0153 (7)0.0123 (7)0.0103 (7)
C50.0348 (8)0.0348 (8)0.0318 (8)0.0170 (7)0.0133 (6)0.0154 (7)
C60.0387 (9)0.0476 (10)0.0403 (9)0.0205 (8)0.0198 (7)0.0125 (8)
C70.0475 (10)0.0707 (13)0.0534 (11)0.0388 (10)0.0184 (9)0.0181 (10)
C80.0463 (11)0.0748 (14)0.0540 (12)0.0336 (10)0.0132 (9)0.0229 (10)
C90.0490 (11)0.0732 (14)0.0458 (10)0.0252 (10)0.0167 (9)0.0278 (10)
C100.0427 (10)0.0670 (13)0.0362 (9)0.0196 (9)0.0110 (8)0.0034 (9)
C110.0360 (9)0.0398 (9)0.0466 (10)0.0141 (7)0.0141 (8)0.0030 (8)
C120.0460 (9)0.0373 (9)0.0376 (9)0.0256 (8)0.0151 (7)0.0101 (7)
C130.0387 (8)0.0359 (8)0.0334 (8)0.0168 (7)0.0141 (7)0.0028 (7)
C140.0465 (10)0.0593 (12)0.0484 (11)0.0274 (9)0.0172 (9)0.0002 (9)
C150.0530 (12)0.0728 (14)0.0585 (13)0.0171 (11)0.0346 (11)−0.0048 (11)
C160.0625 (13)0.0677 (14)0.0382 (10)0.0069 (11)0.0264 (10)0.0034 (10)
C170.0534 (11)0.0595 (12)0.0379 (10)0.0146 (9)0.0149 (9)0.0155 (9)
C180.0399 (9)0.0479 (10)0.0389 (9)0.0179 (8)0.0162 (7)0.0127 (8)
C310.0320 (8)0.0351 (8)0.0345 (8)0.0160 (7)0.0117 (7)0.0099 (7)
C320.0541 (10)0.0374 (9)0.0494 (10)0.0248 (8)0.0291 (8)0.0203 (8)
C330.0572 (11)0.0464 (10)0.0460 (10)0.0272 (9)0.0319 (9)0.0211 (8)
C340.0371 (8)0.0394 (9)0.0397 (9)0.0203 (7)0.0152 (7)0.0090 (7)
C350.0627 (11)0.0458 (10)0.0535 (11)0.0357 (9)0.0273 (9)0.0245 (9)
C360.0631 (11)0.0526 (11)0.0452 (10)0.0362 (9)0.0304 (9)0.0270 (8)
C380.0372 (8)0.0421 (9)0.0357 (8)0.0188 (7)0.0153 (7)0.0162 (7)
N10.0411 (8)0.0414 (8)0.0408 (8)0.0139 (7)0.0126 (7)0.0049 (7)
N20.0407 (9)0.0659 (11)0.0566 (10)0.0236 (8)0.0201 (7)0.0214 (8)
N30.0374 (7)0.0333 (7)0.0289 (6)0.0190 (6)0.0136 (5)0.0112 (5)
Cl10.0826 (4)0.0577 (3)0.0635 (3)0.0439 (3)0.0404 (3)0.0156 (2)
C1—N11.286 (2)C12—N31.4786 (19)
C1—N31.402 (2)C12—C131.506 (2)
C1—C21.447 (2)C12—H12A0.9700
C2—C31.369 (2)C12—H12B0.9700
C2—C381.430 (2)C13—C141.380 (2)
C3—C41.419 (2)C13—C181.385 (2)
C3—C311.490 (2)C14—C151.388 (3)
C4—C51.375 (2)C14—H140.9300
C4—C111.508 (2)C15—C161.365 (3)
C5—N31.379 (2)C15—H150.9300
C5—C61.504 (2)C16—C171.368 (3)
C6—C71.533 (3)C16—H160.9300
C6—H6A0.9700C17—C181.377 (2)
C6—H6B0.9700C17—H170.9300
C7—C81.519 (3)C18—H180.9300
C7—H7A0.9700C31—C321.382 (2)
C7—H7B0.9700C31—C361.382 (2)
C8—C91.510 (3)C32—C331.385 (2)
C8—H8A0.9700C32—H320.9300
C8—H8B0.9700C33—C341.367 (2)
C9—C101.527 (3)C33—H330.9300
C9—H9A0.9700C34—C351.369 (2)
C9—H9B0.9700C34—Cl11.7387 (16)
C10—C111.527 (3)C35—C361.383 (2)
C10—H10A0.9700C35—H350.9300
C10—H10B0.9700C36—H360.9300
C11—H11A0.9700C38—N21.143 (2)
C11—H11B0.9700N1—H10.861 (15)
N1—C1—N3118.60 (15)C10—C11—H11B109.1
N1—C1—C2127.15 (15)H11A—C11—H11B107.8
N3—C1—C2114.24 (13)N3—C12—C13115.09 (13)
C3—C2—C38121.37 (14)N3—C12—H12A108.5
C3—C2—C1123.18 (14)C13—C12—H12A108.5
C38—C2—C1115.45 (14)N3—C12—H12B108.5
C2—C3—C4119.51 (14)C13—C12—H12B108.5
C2—C3—C31119.70 (14)H12A—C12—H12B107.5
C4—C3—C31120.79 (13)C14—C13—C18118.66 (17)
C5—C4—C3118.62 (14)C14—C13—C12119.81 (16)
C5—C4—C11121.18 (14)C18—C13—C12121.48 (15)
C3—C4—C11119.80 (14)C13—C14—C15120.3 (2)
C4—C5—N3121.43 (14)C13—C14—H14119.9
C4—C5—C6121.59 (14)C15—C14—H14119.9
N3—C5—C6116.98 (13)C16—C15—C14120.32 (19)
C5—C6—C7114.83 (14)C16—C15—H15119.8
C5—C6—H6A108.6C14—C15—H15119.8
C7—C6—H6A108.6C15—C16—C17119.81 (19)
C5—C6—H6B108.6C15—C16—H16120.1
C7—C6—H6B108.6C17—C16—H16120.1
H6A—C6—H6B107.5C16—C17—C18120.5 (2)
C8—C7—C6116.81 (16)C16—C17—H17119.8
C8—C7—H7A108.1C18—C17—H17119.8
C6—C7—H7A108.1C17—C18—C13120.46 (17)
C8—C7—H7B108.1C17—C18—H18119.8
C6—C7—H7B108.1C13—C18—H18119.8
H7A—C7—H7B107.3C32—C31—C36118.56 (15)
C9—C8—C7116.28 (16)C32—C31—C3121.06 (14)
C9—C8—H8A108.2C36—C31—C3120.38 (14)
C7—C8—H8A108.2C31—C32—C33120.92 (15)
C9—C8—H8B108.2C31—C32—H32119.5
C7—C8—H8B108.2C33—C32—H32119.5
H8A—C8—H8B107.4C34—C33—C32119.21 (16)
C8—C9—C10115.62 (18)C34—C33—H33120.4
C8—C9—H9A108.4C32—C33—H33120.4
C10—C9—H9A108.4C33—C34—C35121.11 (15)
C8—C9—H9B108.4C33—C34—Cl1119.88 (13)
C10—C9—H9B108.4C35—C34—Cl1119.00 (13)
H9A—C9—H9B107.4C34—C35—C36119.39 (16)
C9—C10—C11115.86 (15)C34—C35—H35120.3
C9—C10—H10A108.3C36—C35—H35120.3
C11—C10—H10A108.3C31—C36—C35120.79 (16)
C9—C10—H10B108.3C31—C36—H36119.6
C11—C10—H10B108.3C35—C36—H36119.6
H10A—C10—H10B107.4N2—C38—C2176.07 (19)
C4—C11—C10112.58 (15)C1—N1—H1107.2 (15)
C4—C11—H11A109.1C5—N3—C1123.00 (13)
C10—C11—H11A109.1C5—N3—C12120.87 (13)
C4—C11—H11B109.1C1—N3—C12115.95 (13)
N1—C1—C2—C3178.97 (16)C15—C16—C17—C180.5 (3)
N3—C1—C2—C3−0.5 (2)C16—C17—C18—C130.5 (3)
N1—C1—C2—C38−1.8 (2)C14—C13—C18—C17−0.9 (3)
N3—C1—C2—C38178.71 (13)C12—C13—C18—C17176.46 (16)
C38—C2—C3—C4−178.72 (14)C2—C3—C31—C32−79.6 (2)
C1—C2—C3—C40.4 (2)C4—C3—C31—C32100.90 (19)
C38—C2—C3—C311.8 (2)C2—C3—C31—C36100.99 (19)
C1—C2—C3—C31−179.06 (13)C4—C3—C31—C36−78.5 (2)
C2—C3—C4—C5−0.5 (2)C36—C31—C32—C331.4 (3)
C31—C3—C4—C5179.02 (14)C3—C31—C32—C33−177.97 (15)
C2—C3—C4—C11172.41 (14)C31—C32—C33—C34−1.1 (3)
C31—C3—C4—C11−8.1 (2)C32—C33—C34—C35−0.1 (3)
C3—C4—C5—N30.6 (2)C32—C33—C34—Cl1178.95 (13)
C11—C4—C5—N3−172.17 (14)C33—C34—C35—C360.9 (3)
C3—C4—C5—C6−179.76 (14)Cl1—C34—C35—C36−178.19 (14)
C11—C4—C5—C67.5 (2)C32—C31—C36—C35−0.7 (3)
C4—C5—C6—C7−88.02 (19)C3—C31—C36—C35178.75 (16)
N3—C5—C6—C791.64 (18)C34—C35—C36—C31−0.5 (3)
C5—C6—C7—C874.9 (2)C3—C2—C38—N2−174 (3)
C6—C7—C8—C9−67.4 (3)C1—C2—C38—N27 (3)
C7—C8—C9—C1099.1 (2)C4—C5—N3—C1−0.7 (2)
C8—C9—C10—C11−55.1 (2)C6—C5—N3—C1179.62 (13)
C5—C4—C11—C1088.34 (19)C4—C5—N3—C12174.19 (14)
C3—C4—C11—C10−84.35 (19)C6—C5—N3—C12−5.5 (2)
C9—C10—C11—C4−52.2 (2)N1—C1—N3—C5−178.89 (14)
N3—C12—C13—C14−132.69 (16)C2—C1—N3—C50.6 (2)
N3—C12—C13—C1849.9 (2)N1—C1—N3—C126.0 (2)
C18—C13—C14—C150.4 (3)C2—C1—N3—C12−174.52 (12)
C12—C13—C14—C15−177.01 (17)C13—C12—N3—C586.24 (17)
C13—C14—C15—C160.5 (3)C13—C12—N3—C1−98.50 (16)
C14—C15—C16—C17−1.0 (3)
D—H···AD—HH···AD···AD—H···A
C32—H32···N1i0.932.553.423 (2)156
C11—H11B···Cg1ii0.972.913.5642 (2)126
  7 in total

1.  The C7-C10 cycloalkanes revisited.

Authors:  Kenneth B Wiberg
Journal:  J Org Chem       Date:  2003-11-28       Impact factor: 4.354

2.  A short history of SHELX.

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

3.  Synthesis and antitumor activity of fluorine-substituted 4-amino-2(1H)-pyridinones and their nucleosides. 3-Deazacytosines.

Authors:  D J McNamara; P D Cook
Journal:  J Med Chem       Date:  1987-02       Impact factor: 7.446

4.  Structural simplification of bioactive natural products with multicomponent synthesis. 2. antiproliferative and antitubulin activities of pyrano[3,2-c]pyridones and pyrano[3,2-c]quinolones.

Authors:  Igor V Magedov; Madhuri Manpadi; Marcia A Ogasawara; Adriana S Dhawan; Snezna Rogelj; Severine Van Slambrouck; Wim F A Steelant; Nikolai M Evdokimov; Pavel Y Uglinskii; Eerik M Elias; Erica J Knee; Paul Tongwa; Mikhail Yu Antipin; Alexander Kornienko
Journal:  J Med Chem       Date:  2008-03-25       Impact factor: 7.446

5.  Structure validation in chemical crystallography.

Authors:  Anthony L Spek
Journal:  Acta Crystallogr D Biol Crystallogr       Date:  2009-01-20

6.  2-Meth-oxy-4-(2-meth-oxy-phen-yl)-5,6,7,8,9,10-hexa-hydro-cyclo-octa-[b]pyridine-3-carbo-nitrile.

Authors:  R Vishnupriya; J Suresh; S Maharani; R Ranjith Kumar; P L Nilantha Lakshman
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2014-05-10

7.  4-(2-Fluoro-phen-yl)-2-meth-oxy-5,6,7,8,9,10-hexa-hydro-cyclo-octa-[b]pyridine-3-carbo-nitrile.

Authors:  R Vishnupriya; J Suresh; S Maharani; R Ranjith Kumar; P L Nilantha Lakshman
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2014-07-23
  7 in total
  1 in total

1.  Crystal structure of 1-benzyl-4-(2,4-di-chloro-phenyl)-2-imino-1,2,5,6,7,8,9,10-octa-hydro-cyclo-octa-[b]pyridine-3-carbo-nitrile.

Authors:  R A Nagalakshmi; J Suresh; S Maharani; R Ranjith Kumar; P L Nilantha Lakshman
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2014-10-31
  1 in total

北京卡尤迪生物科技股份有限公司 © 2022-2023.