In the title compound, C
22H
23N
3O
4, the tolyl ring is almost perpendicular [83.86 (7)°] to the best plane through the eight atoms of the pyrrolizidine ring system. The molecular conformation is stabilized by an intramolecular O—H
O hydrogen bond. The crystal packing features inversion dimers with
R22(8) motifs linked by pairs of N—H
O hydrogen bonds.
Supporting information
CCDC reference: 868042
Key indicators
- Single-crystal X-ray study
- T = 293 K
- Mean (C-C) = 0.002 Å
- R factor = 0.048
- wR factor = 0.175
- Data-to-parameter ratio = 18.8
checkCIF/PLATON results
No syntax errors found
Alert level C
PLAT241_ALERT_2_C Check High Ueq as Compared to Neighbors for C12
PLAT912_ALERT_4_C Missing # of FCF Reflections Above STh/L= 0.600 37
Alert level G
PLAT005_ALERT_5_G No _iucr_refine_instructions_details in CIF .... ?
PLAT007_ALERT_5_G Note: Number of Unrefined D-H Atoms ............ 2
PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 293 K
PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature 293 K
PLAT793_ALERT_4_G The Model has Chirality at C8 (Verify) .... S
PLAT793_ALERT_4_G The Model has Chirality at C9 (Verify) .... S
PLAT793_ALERT_4_G The Model has Chirality at C14 (Verify) .... R
PLAT793_ALERT_4_G The Model has Chirality at C15 (Verify) .... R
0 ALERT level A = Most likely a serious problem - resolve or explain
0 ALERT level B = A potentially serious problem, consider carefully
2 ALERT level C = Check. Ensure it is not caused by an omission or oversight
8 ALERT level G = General information/check it is not something unexpected
2 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
1 ALERT type 2 Indicator that the structure model may be wrong or deficient
0 ALERT type 3 Indicator that the structure quality may be low
5 ALERT type 4 Improvement, methodology, query or suggestion
2 ALERT type 5 Informative message, check
A mixture of (E)-2- nitro-3-p-tolylprop-2-en-1-ol(2 mmol, 0.39 g),isatin(2 mmol, 0.29 g)and l-proline (2 mmol, 0.23 g) in acetonitrile(8 ml)
was refluxed for 2 h. After the completion of the reaction as indicated by
TLC, the reaction mixture was concentrated and the resulting crude mass was
diluted with water (20 ml) and extracted with ethyl acetate (3x10ml) and dried
over anhydrous NaSO4 The organic layer was concentrated and purified by column
chromatography on silica gel (Acme 100–200 mesh), usingethyl acetate: hexanes
(3:7) to provide as a colorless solid in 59% (0.46 g)yield.
H atoms were positioned geometrically and treated as riding on their parent
atoms, with C—H = 0.93 - 0.97 Å, N– H = 0.86 Å, and
O—H = 0.82Å and Uiso(H) = 1.2Ueq(N,O,C).
Data collection: APEX2 (Bruker, 2004); cell refinement: 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: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).
2'-Hydroxymethyl-1'-(4-methylphenyl)-2'-nitro-1',2',5',6',7',7a'-
hexahydrospiro[indoline-3,3'-pyrrolizin]-2-one
top
Crystal data top
C22H23N3O4 | Z = 2 |
Mr = 393.43 | F(000) = 416 |
Triclinic, P1 | Dx = 1.319 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.9172 (4) Å | Cell parameters from 4951 reflections |
b = 9.9953 (4) Å | θ = 1.8–28.3° |
c = 11.5931 (6) Å | µ = 0.09 mm−1 |
α = 81.257 (3)° | T = 293 K |
β = 76.638 (3)° | Block, colorless |
γ = 83.805 (2)° | 0.20 × 0.18 × 0.18 mm |
V = 990.79 (8) Å3 | |
Data collection top
Bruker Kappa APEXII CCD diffractometer | 3737 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.028 |
Graphite monochromator | θmax = 28.4°, θmin = 1.8° |
ω and ϕ scan | h = −11→11 |
18094 measured reflections | k = −13→13 |
4912 independent reflections | l = −15→11 |
Refinement top
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)] = 0.048 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.175 | H-atom parameters constrained |
S = 1.25 | w = 1/[σ2(Fo2) + (0.1P)2] where P = (Fo2 + 2Fc2)/3 |
4912 reflections | (Δ/σ)max = 0.007 |
264 parameters | Δρmax = 0.50 e Å−3 |
0 restraints | Δρmin = −0.34 e Å−3 |
Crystal data top
C22H23N3O4 | γ = 83.805 (2)° |
Mr = 393.43 | V = 990.79 (8) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.9172 (4) Å | Mo Kα radiation |
b = 9.9953 (4) Å | µ = 0.09 mm−1 |
c = 11.5931 (6) Å | T = 293 K |
α = 81.257 (3)° | 0.20 × 0.18 × 0.18 mm |
β = 76.638 (3)° | |
Data collection top
Bruker Kappa APEXII CCD diffractometer | 3737 reflections with I > 2σ(I) |
18094 measured reflections | Rint = 0.028 |
4912 independent reflections | |
Refinement top
R[F2 > 2σ(F2)] = 0.048 | 0 restraints |
wR(F2) = 0.175 | H-atom parameters constrained |
S = 1.25 | Δρmax = 0.50 e Å−3 |
4912 reflections | Δρmin = −0.34 e Å−3 |
264 parameters | |
Special details top
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. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top | x | y | z | Uiso*/Ueq | |
C1 | 0.21898 (19) | 0.62617 (16) | 0.42758 (14) | 0.0478 (4) | |
H1 | 0.1948 | 0.7087 | 0.4579 | 0.057* | |
C2 | 0.1894 (2) | 0.50533 (18) | 0.50230 (16) | 0.0597 (5) | |
H2 | 0.1468 | 0.5068 | 0.5833 | 0.072* | |
C3 | 0.2229 (2) | 0.38237 (18) | 0.45695 (18) | 0.0665 (5) | |
H3 | 0.2010 | 0.3023 | 0.5080 | 0.080* | |
C4 | 0.2878 (2) | 0.37652 (16) | 0.33808 (17) | 0.0606 (5) | |
H4 | 0.3103 | 0.2940 | 0.3076 | 0.073* | |
C5 | 0.31830 (18) | 0.49813 (14) | 0.26526 (14) | 0.0431 (3) | |
C6 | 0.28473 (16) | 0.62292 (13) | 0.30774 (13) | 0.0371 (3) | |
C7 | 0.40581 (16) | 0.64665 (13) | 0.10119 (13) | 0.0378 (3) | |
C8 | 0.33024 (15) | 0.73416 (12) | 0.20230 (12) | 0.0329 (3) | |
C9 | 0.19143 (14) | 0.83335 (12) | 0.17272 (12) | 0.0323 (3) | |
C10 | 0.20643 (18) | 0.88938 (15) | 0.03935 (13) | 0.0426 (3) | |
H10A | 0.2125 | 0.8142 | −0.0059 | 0.051* | |
H10B | 0.1143 | 0.9472 | 0.0299 | 0.051* | |
C11 | 0.56071 (19) | 0.78765 (17) | 0.27409 (19) | 0.0574 (5) | |
H11A | 0.6583 | 0.7713 | 0.2186 | 0.069* | |
H11B | 0.5377 | 0.7054 | 0.3290 | 0.069* | |
C12 | 0.5667 (2) | 0.9037 (2) | 0.3407 (2) | 0.0771 (7) | |
H12A | 0.6405 | 0.9662 | 0.2935 | 0.093* | |
H12B | 0.5966 | 0.8709 | 0.4159 | 0.093* | |
C13 | 0.40563 (19) | 0.97253 (16) | 0.36233 (15) | 0.0511 (4) | |
H13A | 0.4066 | 1.0672 | 0.3718 | 0.061* | |
H13B | 0.3392 | 0.9272 | 0.4325 | 0.061* | |
C14 | 0.35435 (15) | 0.95803 (13) | 0.24826 (13) | 0.0360 (3) | |
H14 | 0.3882 | 1.0341 | 0.1870 | 0.043* | |
C15 | 0.18254 (15) | 0.94197 (12) | 0.25671 (12) | 0.0328 (3) | |
H15 | 0.1407 | 0.8995 | 0.3382 | 0.039* | |
C16 | 0.08246 (15) | 1.07192 (13) | 0.23587 (12) | 0.0365 (3) | |
C17 | −0.06238 (17) | 1.08928 (15) | 0.31073 (15) | 0.0471 (4) | |
H17 | −0.0947 | 1.0221 | 0.3739 | 0.056* | |
C18 | −0.15936 (19) | 1.20451 (16) | 0.29307 (16) | 0.0521 (4) | |
H18 | −0.2560 | 1.2128 | 0.3442 | 0.063* | |
C19 | −0.11602 (18) | 1.30755 (15) | 0.20124 (15) | 0.0473 (4) | |
C20 | 0.0293 (2) | 1.29239 (15) | 0.12843 (15) | 0.0497 (4) | |
H20 | 0.0624 | 1.3614 | 0.0672 | 0.060* | |
C21 | 0.12749 (18) | 1.17662 (14) | 0.14433 (14) | 0.0443 (3) | |
H21 | 0.2243 | 1.1690 | 0.0933 | 0.053* | |
C22 | −0.2232 (2) | 1.42970 (17) | 0.17871 (19) | 0.0633 (5) | |
H22A | −0.3157 | 1.4262 | 0.2406 | 0.095* | |
H22B | −0.2490 | 1.4310 | 0.1026 | 0.095* | |
H22C | −0.1735 | 1.5104 | 0.1785 | 0.095* | |
N1 | 0.38738 (15) | 0.51498 (12) | 0.14359 (12) | 0.0456 (3) | |
H1A | 0.4148 | 0.4495 | 0.1010 | 0.055* | |
N2 | 0.04800 (14) | 0.75474 (12) | 0.20397 (12) | 0.0422 (3) | |
N3 | 0.43621 (12) | 0.83081 (11) | 0.20981 (11) | 0.0381 (3) | |
O1 | −0.06118 (13) | 0.78766 (13) | 0.28004 (13) | 0.0675 (4) | |
O2 | 0.05119 (15) | 0.65971 (13) | 0.14818 (13) | 0.0665 (4) | |
O3 | 0.33650 (13) | 0.96383 (11) | −0.00794 (10) | 0.0511 (3) | |
H3A | 0.4152 | 0.9135 | −0.0065 | 0.077* | |
O4 | 0.47420 (14) | 0.69055 (10) | 0.00021 (10) | 0.0502 (3) | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
C1 | 0.0539 (9) | 0.0497 (8) | 0.0399 (9) | 0.0035 (7) | −0.0110 (7) | −0.0100 (6) |
C2 | 0.0661 (11) | 0.0658 (11) | 0.0403 (9) | 0.0023 (9) | −0.0074 (8) | 0.0034 (8) |
C3 | 0.0788 (13) | 0.0494 (9) | 0.0619 (12) | 0.0034 (8) | −0.0128 (10) | 0.0120 (8) |
C4 | 0.0760 (13) | 0.0385 (8) | 0.0622 (12) | 0.0062 (8) | −0.0124 (10) | −0.0019 (7) |
C5 | 0.0454 (8) | 0.0383 (7) | 0.0451 (9) | 0.0042 (6) | −0.0102 (7) | −0.0086 (6) |
C6 | 0.0384 (7) | 0.0374 (6) | 0.0366 (7) | 0.0021 (5) | −0.0115 (6) | −0.0066 (5) |
C7 | 0.0365 (7) | 0.0376 (7) | 0.0417 (8) | −0.0003 (5) | −0.0070 (6) | −0.0164 (6) |
C8 | 0.0322 (7) | 0.0335 (6) | 0.0348 (7) | −0.0006 (5) | −0.0067 (5) | −0.0127 (5) |
C9 | 0.0279 (6) | 0.0335 (6) | 0.0367 (7) | −0.0031 (5) | −0.0075 (5) | −0.0077 (5) |
C10 | 0.0473 (8) | 0.0464 (8) | 0.0363 (8) | −0.0036 (6) | −0.0115 (6) | −0.0086 (6) |
C11 | 0.0405 (8) | 0.0548 (9) | 0.0891 (13) | 0.0092 (7) | −0.0314 (9) | −0.0296 (9) |
C12 | 0.0755 (13) | 0.0767 (12) | 0.1030 (17) | 0.0189 (10) | −0.0583 (13) | −0.0437 (12) |
C13 | 0.0588 (10) | 0.0488 (8) | 0.0568 (10) | 0.0035 (7) | −0.0270 (8) | −0.0244 (7) |
C14 | 0.0352 (7) | 0.0335 (6) | 0.0431 (8) | 0.0002 (5) | −0.0114 (6) | −0.0143 (5) |
C15 | 0.0317 (7) | 0.0334 (6) | 0.0328 (7) | 0.0009 (5) | −0.0051 (5) | −0.0083 (5) |
C16 | 0.0352 (7) | 0.0366 (6) | 0.0387 (8) | 0.0021 (5) | −0.0083 (6) | −0.0114 (5) |
C17 | 0.0423 (8) | 0.0444 (8) | 0.0492 (9) | 0.0032 (6) | −0.0003 (7) | −0.0094 (6) |
C18 | 0.0387 (8) | 0.0524 (9) | 0.0638 (11) | 0.0091 (7) | −0.0055 (7) | −0.0207 (8) |
C19 | 0.0476 (9) | 0.0398 (7) | 0.0627 (10) | 0.0066 (6) | −0.0251 (8) | −0.0186 (7) |
C20 | 0.0558 (10) | 0.0395 (7) | 0.0556 (10) | −0.0003 (7) | −0.0198 (8) | −0.0029 (7) |
C21 | 0.0405 (8) | 0.0410 (7) | 0.0489 (9) | 0.0015 (6) | −0.0066 (7) | −0.0062 (6) |
C22 | 0.0604 (11) | 0.0472 (9) | 0.0901 (14) | 0.0132 (8) | −0.0346 (10) | −0.0176 (9) |
N1 | 0.0561 (8) | 0.0340 (6) | 0.0454 (7) | 0.0031 (5) | −0.0045 (6) | −0.0154 (5) |
N2 | 0.0355 (6) | 0.0417 (6) | 0.0514 (8) | −0.0069 (5) | −0.0139 (6) | −0.0031 (5) |
N3 | 0.0280 (6) | 0.0383 (6) | 0.0525 (7) | 0.0012 (4) | −0.0111 (5) | −0.0192 (5) |
O1 | 0.0370 (6) | 0.0687 (8) | 0.0894 (10) | −0.0126 (6) | 0.0076 (6) | −0.0141 (7) |
O2 | 0.0668 (8) | 0.0596 (7) | 0.0847 (10) | −0.0225 (6) | −0.0224 (7) | −0.0237 (7) |
O3 | 0.0543 (7) | 0.0523 (6) | 0.0417 (6) | −0.0083 (5) | −0.0003 (5) | −0.0035 (5) |
O4 | 0.0595 (7) | 0.0436 (6) | 0.0429 (6) | −0.0035 (5) | 0.0053 (5) | −0.0169 (5) |
Geometric parameters (Å, º) top
C1—C6 | 1.381 (2) | C12—H12A | 0.9700 |
C1—C2 | 1.387 (2) | C12—H12B | 0.9700 |
C1—H1 | 0.9300 | C13—C14 | 1.527 (2) |
C2—C3 | 1.386 (3) | C13—H13A | 0.9700 |
C2—H2 | 0.9300 | C13—H13B | 0.9700 |
C3—C4 | 1.373 (3) | C14—N3 | 1.4732 (16) |
C3—H3 | 0.9300 | C14—C15 | 1.5367 (18) |
C4—C5 | 1.385 (2) | C14—H14 | 0.9800 |
C4—H4 | 0.9300 | C15—C16 | 1.5153 (17) |
C5—C6 | 1.3878 (19) | C15—H15 | 0.9800 |
C5—N1 | 1.3950 (19) | C16—C17 | 1.390 (2) |
C6—C8 | 1.5331 (19) | C16—C21 | 1.392 (2) |
C7—O4 | 1.2274 (18) | C17—C18 | 1.383 (2) |
C7—N1 | 1.3465 (18) | C17—H17 | 0.9300 |
C7—C8 | 1.5532 (18) | C18—C19 | 1.381 (2) |
C8—N3 | 1.4472 (16) | C18—H18 | 0.9300 |
C8—C9 | 1.5686 (18) | C19—C20 | 1.381 (2) |
C9—N2 | 1.5167 (16) | C19—C22 | 1.496 (2) |
C9—C10 | 1.543 (2) | C20—C21 | 1.389 (2) |
C9—C15 | 1.5493 (17) | C20—H20 | 0.9300 |
C10—O3 | 1.4028 (18) | C21—H21 | 0.9300 |
C10—H10A | 0.9700 | C22—H22A | 0.9600 |
C10—H10B | 0.9700 | C22—H22B | 0.9600 |
C11—N3 | 1.4680 (19) | C22—H22C | 0.9600 |
C11—C12 | 1.499 (2) | N1—H1A | 0.8600 |
C11—H11A | 0.9700 | N2—O1 | 1.2067 (18) |
C11—H11B | 0.9700 | N2—O2 | 1.2223 (17) |
C12—C13 | 1.507 (2) | O3—H3A | 0.8200 |
| | | |
C6—C1—C2 | 119.44 (15) | C12—C13—H13A | 111.4 |
C6—C1—H1 | 120.3 | C14—C13—H13A | 111.4 |
C2—C1—H1 | 120.3 | C12—C13—H13B | 111.4 |
C1—C2—C3 | 120.40 (17) | C14—C13—H13B | 111.4 |
C1—C2—H2 | 119.8 | H13A—C13—H13B | 109.2 |
C3—C2—H2 | 119.8 | N3—C14—C13 | 104.96 (11) |
C4—C3—C2 | 121.25 (16) | N3—C14—C15 | 105.21 (10) |
C4—C3—H3 | 119.4 | C13—C14—C15 | 118.35 (12) |
C2—C3—H3 | 119.4 | N3—C14—H14 | 109.3 |
C3—C4—C5 | 117.47 (16) | C13—C14—H14 | 109.3 |
C3—C4—H4 | 121.3 | C15—C14—H14 | 109.3 |
C5—C4—H4 | 121.3 | C16—C15—C14 | 116.15 (11) |
C4—C5—C6 | 122.65 (15) | C16—C15—C9 | 117.55 (11) |
C4—C5—N1 | 126.82 (14) | C14—C15—C9 | 101.87 (10) |
C6—C5—N1 | 110.52 (12) | C16—C15—H15 | 106.8 |
C1—C6—C5 | 118.79 (14) | C14—C15—H15 | 106.8 |
C1—C6—C8 | 133.01 (12) | C9—C15—H15 | 106.8 |
C5—C6—C8 | 108.19 (12) | C17—C16—C21 | 117.36 (13) |
O4—C7—N1 | 125.80 (13) | C17—C16—C15 | 119.24 (13) |
O4—C7—C8 | 125.37 (12) | C21—C16—C15 | 123.40 (12) |
N1—C7—C8 | 108.81 (12) | C18—C17—C16 | 121.25 (15) |
N3—C8—C6 | 119.23 (11) | C18—C17—H17 | 119.4 |
N3—C8—C7 | 109.64 (10) | C16—C17—H17 | 119.4 |
C6—C8—C7 | 100.66 (10) | C17—C18—C19 | 121.52 (15) |
N3—C8—C9 | 100.32 (9) | C17—C18—H18 | 119.2 |
C6—C8—C9 | 114.29 (11) | C19—C18—H18 | 119.2 |
C7—C8—C9 | 113.20 (10) | C18—C19—C20 | 117.47 (13) |
N2—C9—C10 | 104.26 (11) | C18—C19—C22 | 121.66 (15) |
N2—C9—C15 | 112.33 (11) | C20—C19—C22 | 120.85 (16) |
C10—C9—C15 | 115.03 (11) | C19—C20—C21 | 121.66 (15) |
N2—C9—C8 | 108.15 (10) | C19—C20—H20 | 119.2 |
C10—C9—C8 | 115.16 (11) | C21—C20—H20 | 119.2 |
C15—C9—C8 | 101.99 (10) | C20—C21—C16 | 120.71 (14) |
O3—C10—C9 | 113.06 (12) | C20—C21—H21 | 119.6 |
O3—C10—H10A | 109.0 | C16—C21—H21 | 119.6 |
C9—C10—H10A | 109.0 | C19—C22—H22A | 109.5 |
O3—C10—H10B | 109.0 | C19—C22—H22B | 109.5 |
C9—C10—H10B | 109.0 | H22A—C22—H22B | 109.5 |
H10A—C10—H10B | 107.8 | C19—C22—H22C | 109.5 |
N3—C11—C12 | 104.69 (13) | H22A—C22—H22C | 109.5 |
N3—C11—H11A | 110.8 | H22B—C22—H22C | 109.5 |
C12—C11—H11A | 110.8 | C7—N1—C5 | 111.50 (12) |
N3—C11—H11B | 110.8 | C7—N1—H1A | 124.3 |
C12—C11—H11B | 110.8 | C5—N1—H1A | 124.2 |
H11A—C11—H11B | 108.9 | O1—N2—O2 | 123.69 (13) |
C11—C12—C13 | 105.71 (14) | O1—N2—C9 | 119.96 (12) |
C11—C12—H12A | 110.6 | O2—N2—C9 | 116.35 (12) |
C13—C12—H12A | 110.6 | C8—N3—C11 | 119.86 (12) |
C11—C12—H12B | 110.6 | C8—N3—C14 | 111.92 (10) |
C13—C12—H12B | 110.6 | C11—N3—C14 | 109.93 (11) |
H12A—C12—H12B | 108.7 | C10—O3—H3A | 109.5 |
C12—C13—C14 | 102.09 (13) | | |
| | | |
C6—C1—C2—C3 | −1.1 (3) | N2—C9—C15—C16 | −76.79 (15) |
C1—C2—C3—C4 | 0.9 (3) | C10—C9—C15—C16 | 42.26 (16) |
C2—C3—C4—C5 | −0.1 (3) | C8—C9—C15—C16 | 167.64 (11) |
C3—C4—C5—C6 | −0.6 (3) | N2—C9—C15—C14 | 155.06 (11) |
C3—C4—C5—N1 | 178.06 (17) | C10—C9—C15—C14 | −85.88 (13) |
C2—C1—C6—C5 | 0.5 (2) | C8—C9—C15—C14 | 39.49 (13) |
C2—C1—C6—C8 | 179.21 (15) | C14—C15—C16—C17 | −136.58 (14) |
C4—C5—C6—C1 | 0.4 (2) | C9—C15—C16—C17 | 102.44 (15) |
N1—C5—C6—C1 | −178.47 (13) | C14—C15—C16—C21 | 43.66 (18) |
C4—C5—C6—C8 | −178.65 (15) | C9—C15—C16—C21 | −77.31 (17) |
N1—C5—C6—C8 | 2.51 (17) | C21—C16—C17—C18 | 1.6 (2) |
C1—C6—C8—N3 | 56.6 (2) | C15—C16—C17—C18 | −178.20 (13) |
C5—C6—C8—N3 | −124.58 (13) | C16—C17—C18—C19 | −0.6 (2) |
C1—C6—C8—C7 | 176.41 (15) | C17—C18—C19—C20 | −1.0 (2) |
C5—C6—C8—C7 | −4.77 (14) | C17—C18—C19—C22 | 177.39 (15) |
C1—C6—C8—C9 | −61.95 (19) | C18—C19—C20—C21 | 1.7 (2) |
C5—C6—C8—C9 | 116.88 (12) | C22—C19—C20—C21 | −176.77 (14) |
O4—C7—C8—N3 | −46.30 (18) | C19—C20—C21—C16 | −0.7 (2) |
N1—C7—C8—N3 | 132.12 (12) | C17—C16—C21—C20 | −0.9 (2) |
O4—C7—C8—C6 | −172.79 (14) | C15—C16—C21—C20 | 178.82 (13) |
N1—C7—C8—C6 | 5.63 (14) | O4—C7—N1—C5 | 173.80 (14) |
O4—C7—C8—C9 | 64.80 (18) | C8—C7—N1—C5 | −4.61 (17) |
N1—C7—C8—C9 | −116.79 (13) | C4—C5—N1—C7 | −177.40 (16) |
N3—C8—C9—N2 | −160.20 (10) | C6—C5—N1—C7 | 1.38 (19) |
C6—C8—C9—N2 | −31.39 (14) | C10—C9—N2—O1 | −119.17 (15) |
C7—C8—C9—N2 | 83.07 (13) | C15—C9—N2—O1 | 6.03 (18) |
N3—C8—C9—C10 | 83.67 (12) | C8—C9—N2—O1 | 117.81 (14) |
C6—C8—C9—C10 | −147.53 (11) | C10—C9—N2—O2 | 60.59 (15) |
C7—C8—C9—C10 | −33.06 (15) | C15—C9—N2—O2 | −174.22 (12) |
N3—C8—C9—C15 | −41.62 (12) | C8—C9—N2—O2 | −62.43 (16) |
C6—C8—C9—C15 | 87.19 (12) | C6—C8—N3—C11 | 34.10 (18) |
C7—C8—C9—C15 | −158.34 (10) | C7—C8—N3—C11 | −81.02 (16) |
N2—C9—C10—O3 | −178.62 (11) | C9—C8—N3—C11 | 159.63 (13) |
C15—C9—C10—O3 | 57.92 (16) | C6—C8—N3—C14 | −96.79 (14) |
C8—C9—C10—O3 | −60.29 (15) | C7—C8—N3—C14 | 148.08 (11) |
N3—C11—C12—C13 | 27.5 (2) | C9—C8—N3—C14 | 28.74 (14) |
C11—C12—C13—C14 | −35.8 (2) | C12—C11—N3—C8 | −139.59 (16) |
C12—C13—C14—N3 | 30.41 (17) | C12—C11—N3—C14 | −7.8 (2) |
C12—C13—C14—C15 | 147.33 (15) | C13—C14—N3—C8 | 121.37 (13) |
N3—C14—C15—C16 | −151.72 (11) | C15—C14—N3—C8 | −4.22 (15) |
C13—C14—C15—C16 | 91.49 (15) | C13—C14—N3—C11 | −14.42 (16) |
N3—C14—C15—C9 | −22.68 (13) | C15—C14—N3—C11 | −140.01 (13) |
C13—C14—C15—C9 | −139.47 (12) | | |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O4i | 0.86 | 2.00 | 2.8401 (15) | 167 |
O3—H3A···O4 | 0.82 | 2.23 | 2.8686 (15) | 135 |
Symmetry code: (i) −x+1, −y+1, −z. |
Experimental details
Crystal data |
Chemical formula | C22H23N3O4 |
Mr | 393.43 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 8.9172 (4), 9.9953 (4), 11.5931 (6) |
α, β, γ (°) | 81.257 (3), 76.638 (3), 83.805 (2) |
V (Å3) | 990.79 (8) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.20 × 0.18 × 0.18 |
|
Data collection |
Diffractometer | Bruker Kappa APEXII CCD diffractometer |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 18094, 4912, 3737 |
Rint | 0.028 |
(sin θ/λ)max (Å−1) | 0.668 |
|
Refinement |
R[F2 > 2σ(F2)], wR(F2), S | 0.048, 0.175, 1.25 |
No. of reflections | 4912 |
No. of parameters | 264 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.50, −0.34 |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O4i | 0.86 | 2.00 | 2.8401 (15) | 167.2 |
O3—H3A···O4 | 0.82 | 2.23 | 2.8686 (15) | 135.2 |
Symmetry code: (i) −x+1, −y+1, −z. |
The indole unit is observed in plants (Nigović et al., 2000). Some of the indole derivatives exhibit anti-tumour (Schollmeyer et al., 1995) and anti-bacterial (Okabe & Adachi,1998) activities. Sumatriptan, an indole derivative has been introduced into medicine as a drug for the treatment of migraine (Oxford, 1995). Pyrido [1, 2 - a]indole derivatives have been observed as potent inhibitors of HIV-typeI (Taylor et al., 1999). Spiro-indoles have been reported to exhibit fungicidal activity(Ali et al., 1989). In view of the wide spectrum of biological activity of indole and pyrrolizidine derivatives, the X-ray analysis of the title compound has been undertaken and the crystallographic details are reported in this communication. Bond lengths and bond angles of the pyrrolizidine group and the indole unit are in the same range as observed in reported structures (Usha et al., 2005) The C7 = O4 double bond is slightly elongated [1.225 (2) Å] and this may be due to the active involvement of O4 both in intra and intermolecular hydrogen bonding. The pyrrolizidine ring is perpendicular to the methyl benzyl ring [89.8 (1)°]. The pyrrolizidine and methyl benzyl ring make angles of 81.7 (1) and 68.9 (1)°, respectively, with the oxindole system. The sum of the angles around N2 and N3 [360 and 341.7°], indicates sp2 and sp3 hybridization, respectively. The N3/C11—C14 ring adopts a half chair conformation with the smallest asymmetry parameter (Nardelli, 1983) of D2 (N3) = 0.018 (1)°. The asymmetry parameter DS (C9)= 0.024 (1)° indicates the half chair conformation of the N3/C8/C9/C15/C14 ring. The overall conformation of the pyrrolizidine ring is folded about the bridging bond N3—C14. In the title compound, each molecule is linked to two of its adjacent centro-symmetrically related molecules through N—H···O and C—H···O hydrogen bonds, forming dimers described by R22(8) and R22(18) rings. The atom O3 acts as a donor for an intrammolecular hydrogen bond.