organic compounds
1′,1′′-Dimethyl-4′-phenyldispiro[11H-indeno[1,2-b]quinoxaline-11,2′-pyrrolidine-3′,3′′-piperidin]-4′′-one
aDepartment of Physics, The Madura College, Madurai 625 011, India, bDepartment of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India, and cDepartment of Food Science and Technology, University of Ruhuna, Mapalana, Kamburupitiya 81100, Sri Lanka
*Correspondence e-mail: plakshmannilantha@ymail.com
In the title compound, C30H28N4O, the central pyrrolidine ring adopts an with the CH2 C atom as the flap. The quinoxaline and indene ring systems are planar, with r.m.s. deviations of 0.0165 and 0.0181 Å, respectively. The pyrrolidine ring mean plane forms dihedral angles of 88.84 (1) and 86.14 (1)° with the quinoxaline and indene ring systems, respectively. A weak intramolecular C—H⋯N interaction is observed. In the crystal, C—H⋯O interactions lead to helical supramolecular chains along the b axis having a C(9) motif.
Related literature
For the importance of et al. (1991); James et al. (1991). For the importance of pyrrolidine derivatives, see: Amal Raj et al. (2003). For conformation analysis, see: Cremer & Pople (1975). For a related structure, see: Selvanayagam et al. (2011). For hydrogen-bond motifs, see: Bernstein et al. (1995).
see: KobayashiExperimental
Crystal data
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Data collection: APEX2 (Bruker, 2004); cell 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: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S160053681302223X/tk5246sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S160053681302223X/tk5246Isup2.hkl
A mixture of 1-methyl-3-[E-phenylmethylidene]tetrahydro-2(1H)-pyridinone (1 mmol), ninhydrin (1 mmol), o-phenylenediamine (1 mmol) and sarcosine (1 mmol) in methanol was refluxed for 3-4 h. After completion of the reaction, as indicated by TLC, the reaction mixture was poured into cold water. The solid precipitate obtained was filtered and dried. The product was purified by
using petroleum ether:ethylacetate mixture (90:10 v/v). Suitable crystals for the single crystal X-ray studies were obtained by recrystallizing the product from methanol. Yield: 45%, M.pt: 510-511 K.H atoms were placed at calculated positions and allowed to ride on their carrier atoms with C—H = 0.93–0.98Å. Uiso = 1.2Ueq(C) for CH2 and CH groups and Uiso = 1.5Ueq(C) for CH3 groups. The reflections (1 0 0) and (0 0 2) are affected by the beam-stop and these reflections are omitted from the final
The DELU constraint is applied to the N2—C43 bond in order to avoid the Hirshfield difference.Data collection: APEX2 (Bruker, 2004); cell
SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C30H28N4O | F(000) = 976 |
Mr = 460.56 | Dx = 1.290 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 2000 reflections |
a = 13.4470 (6) Å | θ = 2–31° |
b = 8.4557 (4) Å | µ = 0.08 mm−1 |
c = 20.8580 (9) Å | T = 293 K |
β = 90.195 (2)° | Block, green |
V = 2371.62 (19) Å3 | 0.21 × 0.19 × 0.18 mm |
Z = 4 |
Bruker Kappa APEXII diffractometer | 6662 independent reflections |
Radiation source: fine-focus sealed tube | 4394 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.032 |
Detector resolution: 0 pixels mm-1 | θmax = 29.7°, θmin = 2.5° |
ω and ϕ scans | h = −18→13 |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | k = −11→11 |
Tmin = 0.967, Tmax = 0.974 | l = −18→28 |
28395 measured reflections |
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)] = 0.050 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.138 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0621P)2 + 0.385P] where P = (Fo2 + 2Fc2)/3 |
6662 reflections | (Δ/σ)max < 0.001 |
316 parameters | Δρmax = 0.19 e Å−3 |
1 restraint | Δρmin = −0.23 e Å−3 |
C30H28N4O | V = 2371.62 (19) Å3 |
Mr = 460.56 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 13.4470 (6) Å | µ = 0.08 mm−1 |
b = 8.4557 (4) Å | T = 293 K |
c = 20.8580 (9) Å | 0.21 × 0.19 × 0.18 mm |
β = 90.195 (2)° |
Bruker Kappa APEXII diffractometer | 6662 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 4394 reflections with I > 2σ(I) |
Tmin = 0.967, Tmax = 0.974 | Rint = 0.032 |
28395 measured reflections |
R[F2 > 2σ(F2)] = 0.050 | 1 restraint |
wR(F2) = 0.138 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.19 e Å−3 |
6662 reflections | Δρmin = −0.23 e Å−3 |
316 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 > 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 | ||
C1 | 0.36237 (14) | 0.57618 (18) | 0.06530 (9) | 0.0608 (4) | |
H1A | 0.3764 | 0.5501 | 0.1092 | 0.091* | |
H1B | 0.4125 | 0.5310 | 0.0383 | 0.091* | |
H1C | 0.2985 | 0.5346 | 0.0535 | 0.091* | |
C2 | 0.34240 (11) | 0.80537 (17) | −0.00602 (7) | 0.0444 (3) | |
H2A | 0.2771 | 0.7738 | −0.0212 | 0.053* | |
H2B | 0.3924 | 0.7701 | −0.0362 | 0.053* | |
C3 | 0.34818 (10) | 0.98182 (15) | 0.00505 (6) | 0.0367 (3) | |
H3 | 0.4176 | 1.0048 | 0.0159 | 0.044* | |
C4 | 0.28798 (9) | 1.00430 (14) | 0.06781 (6) | 0.0329 (3) | |
C5 | 0.30193 (10) | 0.83818 (15) | 0.10348 (6) | 0.0355 (3) | |
C6 | 0.35593 (10) | 0.84200 (15) | 0.16788 (6) | 0.0393 (3) | |
C7 | 0.30027 (11) | 0.77358 (16) | 0.21664 (6) | 0.0408 (3) | |
C8 | 0.33822 (13) | 0.75968 (19) | 0.27843 (7) | 0.0529 (4) | |
H8 | 0.3010 | 0.7129 | 0.3108 | 0.063* | |
C9 | 0.43177 (13) | 0.8165 (2) | 0.29050 (8) | 0.0597 (4) | |
H9 | 0.4581 | 0.8091 | 0.3317 | 0.072* | |
C10 | 0.48776 (13) | 0.8847 (2) | 0.24228 (8) | 0.0584 (4) | |
H10 | 0.5509 | 0.9232 | 0.2516 | 0.070* | |
C11 | 0.45123 (11) | 0.89637 (18) | 0.18041 (8) | 0.0491 (4) | |
H11 | 0.4898 | 0.9398 | 0.1479 | 0.059* | |
C12 | 0.20533 (10) | 0.75594 (14) | 0.12273 (6) | 0.0363 (3) | |
C13 | 0.20671 (10) | 0.71782 (15) | 0.18953 (6) | 0.0392 (3) | |
C14 | 0.05869 (11) | 0.59550 (16) | 0.17986 (7) | 0.0458 (3) | |
C15 | 0.05754 (11) | 0.63118 (16) | 0.11364 (7) | 0.0431 (3) | |
C16 | −0.02353 (12) | 0.58276 (19) | 0.07619 (9) | 0.0541 (4) | |
H16 | −0.0262 | 0.6090 | 0.0329 | 0.065* | |
C17 | −0.09862 (13) | 0.4972 (2) | 0.10312 (10) | 0.0672 (5) | |
H17 | −0.1520 | 0.4645 | 0.0779 | 0.081* | |
C18 | −0.09591 (14) | 0.4583 (2) | 0.16794 (11) | 0.0701 (5) | |
H18 | −0.1470 | 0.3981 | 0.1854 | 0.084* | |
C19 | −0.02015 (13) | 0.5068 (2) | 0.20580 (9) | 0.0600 (4) | |
H19 | −0.0200 | 0.4815 | 0.2492 | 0.072* | |
C31 | 0.32246 (11) | 1.08677 (18) | −0.05113 (6) | 0.0436 (3) | |
C32 | 0.25500 (13) | 1.0445 (2) | −0.09802 (7) | 0.0615 (4) | |
H32 | 0.2198 | 0.9503 | −0.0943 | 0.074* | |
C33 | 0.23919 (18) | 1.1419 (3) | −0.15091 (9) | 0.0826 (7) | |
H33 | 0.1942 | 1.1119 | −0.1826 | 0.099* | |
C34 | 0.2896 (2) | 1.2812 (3) | −0.15630 (9) | 0.0873 (7) | |
H34 | 0.2787 | 1.3462 | −0.1916 | 0.105* | |
C35 | 0.35562 (18) | 1.3253 (3) | −0.11021 (10) | 0.0787 (6) | |
H35 | 0.3894 | 1.4209 | −0.1138 | 0.094* | |
C36 | 0.37261 (13) | 1.2288 (2) | −0.05827 (8) | 0.0594 (4) | |
H36 | 0.4187 | 1.2594 | −0.0273 | 0.071* | |
C41 | 0.17892 (10) | 1.04422 (16) | 0.05398 (6) | 0.0379 (3) | |
H41A | 0.1758 | 1.1387 | 0.0277 | 0.045* | |
H41B | 0.1490 | 0.9583 | 0.0299 | 0.045* | |
C42 | 0.01616 (12) | 1.0763 (2) | 0.09830 (9) | 0.0662 (5) | |
H42A | −0.0039 | 0.9799 | 0.0777 | 0.099* | |
H42B | 0.0028 | 1.1641 | 0.0704 | 0.099* | |
H42C | −0.0203 | 1.0891 | 0.1375 | 0.099* | |
C43 | 0.15684 (14) | 1.21341 (18) | 0.14362 (8) | 0.0576 (4) | |
H43A | 0.1172 | 1.2339 | 0.1815 | 0.069* | |
H43B | 0.1493 | 1.3024 | 0.1147 | 0.069* | |
C44 | 0.26476 (14) | 1.19575 (19) | 0.16236 (7) | 0.0571 (4) | |
H44A | 0.2894 | 1.2966 | 0.1779 | 0.069* | |
H44B | 0.2700 | 1.1201 | 0.1972 | 0.069* | |
C45 | 0.32857 (11) | 1.14165 (16) | 0.10784 (6) | 0.0419 (3) | |
N1 | 0.36204 (9) | 0.74661 (13) | 0.05769 (6) | 0.0422 (3) | |
N2 | 0.12222 (9) | 1.07001 (14) | 0.11253 (5) | 0.0457 (3) | |
N3 | 0.13447 (9) | 0.71125 (13) | 0.08434 (5) | 0.0408 (3) | |
N4 | 0.13632 (9) | 0.63976 (14) | 0.21868 (6) | 0.0469 (3) | |
O1 | 0.40639 (9) | 1.20595 (13) | 0.09512 (5) | 0.0567 (3) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0738 (11) | 0.0356 (8) | 0.0732 (11) | 0.0120 (8) | 0.0169 (9) | −0.0021 (7) |
C2 | 0.0490 (8) | 0.0435 (8) | 0.0408 (7) | 0.0026 (6) | 0.0096 (6) | −0.0072 (6) |
C3 | 0.0359 (7) | 0.0398 (7) | 0.0344 (6) | −0.0005 (5) | 0.0027 (5) | −0.0005 (5) |
C4 | 0.0381 (7) | 0.0314 (6) | 0.0292 (6) | 0.0015 (5) | 0.0004 (5) | −0.0012 (5) |
C5 | 0.0388 (7) | 0.0328 (6) | 0.0348 (6) | 0.0028 (5) | 0.0014 (5) | 0.0003 (5) |
C6 | 0.0426 (7) | 0.0342 (6) | 0.0411 (7) | 0.0081 (6) | −0.0034 (6) | 0.0007 (6) |
C7 | 0.0473 (8) | 0.0370 (7) | 0.0382 (7) | 0.0111 (6) | −0.0002 (6) | 0.0027 (6) |
C8 | 0.0624 (10) | 0.0552 (9) | 0.0411 (8) | 0.0167 (8) | −0.0013 (7) | 0.0061 (7) |
C9 | 0.0654 (11) | 0.0668 (10) | 0.0466 (9) | 0.0209 (9) | −0.0182 (8) | −0.0010 (8) |
C10 | 0.0520 (9) | 0.0629 (10) | 0.0604 (10) | 0.0118 (8) | −0.0172 (8) | −0.0023 (8) |
C11 | 0.0458 (8) | 0.0481 (8) | 0.0535 (9) | 0.0051 (7) | −0.0059 (7) | 0.0022 (7) |
C12 | 0.0424 (7) | 0.0292 (6) | 0.0374 (7) | 0.0040 (5) | 0.0036 (5) | −0.0002 (5) |
C13 | 0.0474 (8) | 0.0326 (6) | 0.0378 (7) | 0.0073 (6) | 0.0062 (6) | 0.0019 (5) |
C14 | 0.0480 (8) | 0.0351 (7) | 0.0545 (9) | 0.0054 (6) | 0.0139 (7) | 0.0006 (6) |
C15 | 0.0430 (8) | 0.0329 (7) | 0.0534 (8) | 0.0008 (6) | 0.0091 (6) | −0.0055 (6) |
C16 | 0.0509 (9) | 0.0466 (8) | 0.0648 (10) | −0.0048 (7) | 0.0039 (7) | −0.0112 (7) |
C17 | 0.0481 (10) | 0.0606 (11) | 0.0930 (14) | −0.0111 (8) | 0.0067 (9) | −0.0129 (10) |
C18 | 0.0543 (10) | 0.0594 (11) | 0.0969 (15) | −0.0102 (8) | 0.0240 (10) | 0.0029 (10) |
C19 | 0.0561 (10) | 0.0533 (9) | 0.0707 (11) | −0.0002 (8) | 0.0227 (8) | 0.0073 (8) |
C31 | 0.0459 (8) | 0.0520 (8) | 0.0330 (7) | 0.0083 (6) | 0.0100 (6) | 0.0015 (6) |
C32 | 0.0652 (11) | 0.0785 (12) | 0.0406 (8) | 0.0092 (9) | −0.0033 (7) | −0.0034 (8) |
C33 | 0.0974 (16) | 0.1114 (18) | 0.0389 (9) | 0.0342 (14) | −0.0113 (9) | −0.0023 (10) |
C34 | 0.1221 (19) | 0.0938 (17) | 0.0461 (11) | 0.0480 (15) | 0.0199 (12) | 0.0228 (11) |
C35 | 0.1013 (16) | 0.0702 (12) | 0.0647 (12) | 0.0143 (11) | 0.0216 (11) | 0.0275 (10) |
C36 | 0.0686 (11) | 0.0565 (10) | 0.0534 (9) | 0.0014 (8) | 0.0094 (8) | 0.0130 (8) |
C41 | 0.0420 (7) | 0.0379 (7) | 0.0338 (6) | 0.0058 (6) | 0.0033 (5) | 0.0028 (5) |
C42 | 0.0499 (10) | 0.0749 (12) | 0.0741 (11) | 0.0191 (9) | 0.0175 (8) | 0.0087 (9) |
C43 | 0.0811 (12) | 0.0435 (8) | 0.0485 (9) | 0.0169 (7) | 0.0164 (8) | −0.0054 (6) |
C44 | 0.0888 (13) | 0.0429 (8) | 0.0396 (8) | 0.0051 (8) | −0.0033 (8) | −0.0118 (6) |
C45 | 0.0560 (9) | 0.0333 (7) | 0.0363 (7) | 0.0012 (6) | −0.0102 (6) | 0.0011 (5) |
N1 | 0.0483 (7) | 0.0334 (6) | 0.0450 (6) | 0.0073 (5) | 0.0081 (5) | −0.0017 (5) |
N2 | 0.0499 (7) | 0.0447 (6) | 0.0426 (6) | 0.0114 (5) | 0.0118 (5) | 0.0014 (5) |
N3 | 0.0451 (7) | 0.0362 (6) | 0.0410 (6) | −0.0024 (5) | 0.0037 (5) | −0.0034 (5) |
N4 | 0.0512 (7) | 0.0441 (7) | 0.0456 (7) | 0.0052 (6) | 0.0114 (6) | 0.0063 (5) |
O1 | 0.0632 (7) | 0.0481 (6) | 0.0586 (7) | −0.0154 (5) | −0.0148 (5) | 0.0004 (5) |
C1—N1 | 1.4499 (18) | C15—C16 | 1.400 (2) |
C1—H1A | 0.9600 | C16—C17 | 1.365 (2) |
C1—H1B | 0.9600 | C16—H16 | 0.9300 |
C1—H1C | 0.9600 | C17—C18 | 1.392 (3) |
C2—N1 | 1.4423 (18) | C17—H17 | 0.9300 |
C2—C3 | 1.5117 (19) | C18—C19 | 1.351 (3) |
C2—H2A | 0.9700 | C18—H18 | 0.9300 |
C2—H2B | 0.9700 | C19—H19 | 0.9300 |
C3—C31 | 1.5091 (18) | C31—C32 | 1.379 (2) |
C3—C4 | 1.5531 (17) | C31—C36 | 1.385 (2) |
C3—H3 | 0.9800 | C32—C33 | 1.393 (3) |
C4—C45 | 1.5301 (18) | C32—H32 | 0.9300 |
C4—C41 | 1.5312 (18) | C33—C34 | 1.364 (3) |
C4—C5 | 1.6003 (17) | C33—H33 | 0.9300 |
C5—N1 | 1.4731 (17) | C34—C35 | 1.359 (3) |
C5—C6 | 1.5252 (18) | C34—H34 | 0.9300 |
C5—C12 | 1.5284 (19) | C35—C36 | 1.375 (2) |
C6—C11 | 1.386 (2) | C35—H35 | 0.9300 |
C6—C7 | 1.3908 (19) | C36—H36 | 0.9300 |
C7—C8 | 1.389 (2) | C41—N2 | 1.4582 (17) |
C7—C13 | 1.456 (2) | C41—H41A | 0.9700 |
C8—C9 | 1.369 (2) | C41—H41B | 0.9700 |
C8—H8 | 0.9300 | C42—N2 | 1.457 (2) |
C9—C10 | 1.384 (3) | C42—H42A | 0.9600 |
C9—H9 | 0.9300 | C42—H42B | 0.9600 |
C10—C11 | 1.383 (2) | C42—H42C | 0.9600 |
C10—H10 | 0.9300 | C43—N2 | 1.451 (2) |
C11—H11 | 0.9300 | C43—C44 | 1.509 (2) |
C12—N3 | 1.2986 (17) | C43—H43A | 0.9700 |
C12—C13 | 1.4302 (19) | C43—H43B | 0.9700 |
C13—N4 | 1.3058 (18) | C44—C45 | 1.498 (2) |
C14—N4 | 1.371 (2) | C44—H44A | 0.9700 |
C14—C19 | 1.408 (2) | C44—H44B | 0.9700 |
C14—C15 | 1.414 (2) | C45—O1 | 1.2095 (18) |
C15—N3 | 1.3807 (18) | ||
N1—C1—H1A | 109.5 | C16—C17—C18 | 120.53 (17) |
N1—C1—H1B | 109.5 | C16—C17—H17 | 119.7 |
H1A—C1—H1B | 109.5 | C18—C17—H17 | 119.7 |
N1—C1—H1C | 109.5 | C19—C18—C17 | 120.90 (17) |
H1A—C1—H1C | 109.5 | C19—C18—H18 | 119.5 |
H1B—C1—H1C | 109.5 | C17—C18—H18 | 119.5 |
N1—C2—C3 | 100.96 (11) | C18—C19—C14 | 120.29 (17) |
N1—C2—H2A | 111.6 | C18—C19—H19 | 119.9 |
C3—C2—H2A | 111.6 | C14—C19—H19 | 119.9 |
N1—C2—H2B | 111.6 | C32—C31—C36 | 117.89 (15) |
C3—C2—H2B | 111.6 | C32—C31—C3 | 123.14 (14) |
H2A—C2—H2B | 109.4 | C36—C31—C3 | 118.87 (13) |
C31—C3—C2 | 116.76 (11) | C31—C32—C33 | 120.5 (2) |
C31—C3—C4 | 117.63 (11) | C31—C32—H32 | 119.8 |
C2—C3—C4 | 102.87 (10) | C33—C32—H32 | 119.8 |
C31—C3—H3 | 106.2 | C34—C33—C32 | 120.1 (2) |
C2—C3—H3 | 106.2 | C34—C33—H33 | 119.9 |
C4—C3—H3 | 106.2 | C32—C33—H33 | 119.9 |
C45—C4—C41 | 105.97 (10) | C35—C34—C33 | 120.16 (18) |
C45—C4—C3 | 111.52 (11) | C35—C34—H34 | 119.9 |
C41—C4—C3 | 111.71 (10) | C33—C34—H34 | 119.9 |
C45—C4—C5 | 111.80 (10) | C34—C35—C36 | 120.1 (2) |
C41—C4—C5 | 113.06 (10) | C34—C35—H35 | 120.0 |
C3—C4—C5 | 102.93 (9) | C36—C35—H35 | 120.0 |
N1—C5—C6 | 108.76 (10) | C35—C36—C31 | 121.31 (19) |
N1—C5—C12 | 113.57 (11) | C35—C36—H36 | 119.3 |
C6—C5—C12 | 100.41 (10) | C31—C36—H36 | 119.3 |
N1—C5—C4 | 102.92 (10) | N2—C41—C4 | 112.24 (10) |
C6—C5—C4 | 116.47 (10) | N2—C41—H41A | 109.2 |
C12—C5—C4 | 115.03 (10) | C4—C41—H41A | 109.2 |
C11—C6—C7 | 119.99 (13) | N2—C41—H41B | 109.2 |
C11—C6—C5 | 127.61 (13) | C4—C41—H41B | 109.2 |
C7—C6—C5 | 112.30 (12) | H41A—C41—H41B | 107.9 |
C8—C7—C6 | 121.10 (14) | N2—C42—H42A | 109.5 |
C8—C7—C13 | 130.31 (14) | N2—C42—H42B | 109.5 |
C6—C7—C13 | 108.49 (11) | H42A—C42—H42B | 109.5 |
C9—C8—C7 | 118.38 (16) | N2—C42—H42C | 109.5 |
C9—C8—H8 | 120.8 | H42A—C42—H42C | 109.5 |
C7—C8—H8 | 120.8 | H42B—C42—H42C | 109.5 |
C8—C9—C10 | 120.94 (14) | N2—C43—C44 | 109.87 (12) |
C8—C9—H9 | 119.5 | N2—C43—H43A | 109.7 |
C10—C9—H9 | 119.5 | C44—C43—H43A | 109.7 |
C11—C10—C9 | 121.03 (16) | N2—C43—H43B | 109.7 |
C11—C10—H10 | 119.5 | C44—C43—H43B | 109.7 |
C9—C10—H10 | 119.5 | H43A—C43—H43B | 108.2 |
C10—C11—C6 | 118.53 (15) | C45—C44—C43 | 112.72 (12) |
C10—C11—H11 | 120.7 | C45—C44—H44A | 109.0 |
C6—C11—H11 | 120.7 | C43—C44—H44A | 109.0 |
N3—C12—C13 | 122.84 (13) | C45—C44—H44B | 109.0 |
N3—C12—C5 | 126.36 (12) | C43—C44—H44B | 109.0 |
C13—C12—C5 | 110.50 (11) | H44A—C44—H44B | 107.8 |
N4—C13—C12 | 124.08 (13) | O1—C45—C44 | 121.83 (13) |
N4—C13—C7 | 127.56 (13) | O1—C45—C4 | 121.92 (13) |
C12—C13—C7 | 108.29 (12) | C44—C45—C4 | 116.22 (13) |
N4—C14—C19 | 119.42 (15) | C2—N1—C1 | 116.35 (12) |
N4—C14—C15 | 121.63 (13) | C2—N1—C5 | 108.49 (10) |
C19—C14—C15 | 118.90 (15) | C1—N1—C5 | 116.94 (12) |
N3—C15—C16 | 118.66 (14) | C43—N2—C42 | 111.90 (13) |
N3—C15—C14 | 122.10 (13) | C43—N2—C41 | 109.35 (12) |
C16—C15—C14 | 119.24 (14) | C42—N2—C41 | 110.44 (12) |
C17—C16—C15 | 120.08 (17) | C12—N3—C15 | 114.77 (12) |
C17—C16—H16 | 120.0 | C13—N4—C14 | 114.51 (12) |
C15—C16—H16 | 120.0 | ||
N1—C2—C3—C31 | −174.91 (11) | N3—C15—C16—C17 | 177.03 (14) |
N1—C2—C3—C4 | −44.52 (13) | C14—C15—C16—C17 | −2.4 (2) |
C31—C3—C4—C45 | −82.17 (14) | C15—C16—C17—C18 | 0.5 (3) |
C2—C3—C4—C45 | 147.97 (11) | C16—C17—C18—C19 | 1.3 (3) |
C31—C3—C4—C41 | 36.21 (16) | C17—C18—C19—C14 | −1.2 (3) |
C2—C3—C4—C41 | −93.65 (12) | N4—C14—C19—C18 | −178.14 (15) |
C31—C3—C4—C5 | 157.82 (11) | C15—C14—C19—C18 | −0.7 (2) |
C2—C3—C4—C5 | 27.95 (12) | C2—C3—C31—C32 | 30.6 (2) |
C45—C4—C5—N1 | −121.60 (11) | C4—C3—C31—C32 | −92.51 (16) |
C41—C4—C5—N1 | 118.90 (11) | C2—C3—C31—C36 | −145.75 (14) |
C3—C4—C5—N1 | −1.78 (12) | C4—C3—C31—C36 | 91.18 (16) |
C45—C4—C5—C6 | −2.74 (15) | C36—C31—C32—C33 | 0.6 (2) |
C41—C4—C5—C6 | −122.24 (12) | C3—C31—C32—C33 | −175.77 (15) |
C3—C4—C5—C6 | 117.08 (12) | C31—C32—C33—C34 | −0.9 (3) |
C45—C4—C5—C12 | 114.35 (13) | C32—C33—C34—C35 | 0.2 (3) |
C41—C4—C5—C12 | −5.15 (14) | C33—C34—C35—C36 | 0.6 (3) |
C3—C4—C5—C12 | −125.83 (11) | C34—C35—C36—C31 | −0.9 (3) |
N1—C5—C6—C11 | 56.97 (17) | C32—C31—C36—C35 | 0.3 (2) |
C12—C5—C6—C11 | 176.43 (13) | C3—C31—C36—C35 | 176.80 (15) |
C4—C5—C6—C11 | −58.68 (18) | C45—C4—C41—N2 | −56.74 (14) |
N1—C5—C6—C7 | −119.49 (12) | C3—C4—C41—N2 | −178.38 (11) |
C12—C5—C6—C7 | −0.03 (13) | C5—C4—C41—N2 | 66.07 (13) |
C4—C5—C6—C7 | 124.86 (12) | N2—C43—C44—C45 | 51.34 (18) |
C11—C6—C7—C8 | 0.6 (2) | C43—C44—C45—O1 | 132.24 (15) |
C5—C6—C7—C8 | 177.34 (12) | C43—C44—C45—C4 | −45.70 (17) |
C11—C6—C7—C13 | −176.19 (12) | C41—C4—C45—O1 | −131.69 (13) |
C5—C6—C7—C13 | 0.57 (15) | C3—C4—C45—O1 | −9.93 (17) |
C6—C7—C8—C9 | 0.6 (2) | C5—C4—C45—O1 | 104.71 (14) |
C13—C7—C8—C9 | 176.60 (14) | C41—C4—C45—C44 | 46.25 (14) |
C7—C8—C9—C10 | −0.7 (2) | C3—C4—C45—C44 | 168.01 (11) |
C8—C9—C10—C11 | −0.5 (3) | C5—C4—C45—C44 | −77.35 (14) |
C9—C10—C11—C6 | 1.7 (2) | C3—C2—N1—C1 | −179.96 (13) |
C7—C6—C11—C10 | −1.7 (2) | C3—C2—N1—C5 | 45.72 (14) |
C5—C6—C11—C10 | −177.93 (13) | C6—C5—N1—C2 | −151.26 (11) |
N1—C5—C12—N3 | −58.40 (17) | C12—C5—N1—C2 | 97.86 (13) |
C6—C5—C12—N3 | −174.31 (12) | C4—C5—N1—C2 | −27.15 (13) |
C4—C5—C12—N3 | 59.83 (17) | C6—C5—N1—C1 | 74.73 (16) |
N1—C5—C12—C13 | 115.36 (12) | C12—C5—N1—C1 | −36.15 (17) |
C6—C5—C12—C13 | −0.54 (13) | C4—C5—N1—C1 | −161.16 (13) |
C4—C5—C12—C13 | −126.41 (11) | C44—C43—N2—C42 | 175.24 (13) |
N3—C12—C13—N4 | −2.3 (2) | C44—C43—N2—C41 | −62.07 (16) |
C5—C12—C13—N4 | −176.31 (12) | C4—C41—N2—C43 | 67.73 (14) |
N3—C12—C13—C7 | 174.93 (12) | C4—C41—N2—C42 | −168.72 (12) |
C5—C12—C13—C7 | 0.91 (14) | C13—C12—N3—C15 | 3.36 (18) |
C8—C7—C13—N4 | −0.2 (2) | C5—C12—N3—C15 | 176.41 (12) |
C6—C7—C13—N4 | 176.18 (13) | C16—C15—N3—C12 | 178.09 (13) |
C8—C7—C13—C12 | −177.28 (14) | C14—C15—N3—C12 | −2.53 (19) |
C6—C7—C13—C12 | −0.91 (15) | C12—C13—N4—C14 | −0.02 (19) |
N4—C14—C15—N3 | 0.5 (2) | C7—C13—N4—C14 | −176.69 (13) |
C19—C14—C15—N3 | −176.95 (13) | C19—C14—N4—C13 | 178.22 (13) |
N4—C14—C15—C16 | 179.83 (13) | C15—C14—N4—C13 | 0.82 (19) |
C19—C14—C15—C16 | 2.4 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C41—H41B···N3 | 0.97 | 2.39 | 2.9475 (18) | 116 |
C9—H9···O1i | 0.93 | 2.53 | 3.3564 (18) | 148 |
Symmetry code: (i) −x+1, y−1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C41—H41B···N3 | 0.97 | 2.39 | 2.9475 (18) | 116.3 |
C9—H9···O1i | 0.93 | 2.53 | 3.3564 (18) | 148.4 |
Symmetry code: (i) −x+1, y−1/2, −z+1/2. |
Acknowledgements
JS and RAN thank the management of Madura College for their encouragement and support. RRK thanks theDST, New Delhi, for funds under the fast-track scheme (No. SR/FT/CS-073/2009)
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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.
Spiro compounds are a particular class of naturally occurring substances characterized by highly pronounced biological properties (Kobayashi et al., 1991; James et al., 1991). Pyrrolidine derivatives are found to have anti-convulsant, anti-microbial and anti-fungal activities against various pathogens (Amal Raj et al., 2003). Our interest in preparing pharmacologically active pyrrolidines led us to the title compound, and we have undertaken X-ray crystal structure determination in order to establish its conformation.
In the title compound (Fig. 1) C30H28N4O, the central pyrrolidine ring is an envelope on C2 with the asymmetry parameters ΔCs(C2) = 1.02 (13)° and puckering parameters q2 = 0.4394 (14) Å and ϕ2 = 219.24 (18)° (Cremer & Pople, 1975). The quinoxaline indene and the indole group forms dihedral angles of 88.84 (1) and 86.14 (1)°, respectively, with the central pyrrolidine ring. The quinoxaline-indene ring system (C12-C17/N3,N4) is planar, with r.m.s. deviation = 0.0165 Å. The indole group is also in planar with r.m.s. deviation = 0.0181 Å . The substituent at C3 is in an equatorial position indicated by the dihedral angle of 77.13 (1)° with the mean plane of the central pyrrolidine ring. The C—C bond lengths in the pyrrolidine ring in particular, at two spiro junctions (C3—C4 = 1.5531 (17) Å and C4—C5 = 1.6003 (17) Å) are somewhat longer than the normal values (C—C = 1.54 Å ), as found in a similar structure (Selvanayagam et al., 2011). This may be due to the the steric interactions of the bulky substituents at atoms C4 and C5 of the pyrrolidine ring. The short H32 ··· H2A contact (2.27 Å) results in substantial widening of the bond angle C3—C31—C32 to 123.14 (14)°. The sum of bond angles around N1 (341.8°) and N2 (339.7°) indicate the atoms N1 and N2 are each in a trigonal geometry. A weak intramolecular C—H···N interaction is observed (Table 1).
In the crystal structure, a C—H···O interaction leads to helical chains generating a C22(9) motif (Bernstein et al., 1995).