organic compounds
9-O-Ethylberberrubinium iodide monohydrate
aDepartment of Chemistry and Biochemistry, University of Minnesota Duluth, 1039 University Dr., Duluth, MN 55812, USA
*Correspondence e-mail: pgrundt@d.umn.edu, smberry@d.umn.edu
In the title compound (systematic name: 9-ethoxy-10-methoxy-5,6-dihydro-1,3-dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium iodide monohydrate), 2C21H20NO4+·2I−·H2O, two independent molecules pack in the where interactions between the molecules are stabilized by weak intermolecular π–π stacking interactions [centroid–centroid distances in the range 3.571 (4) to 3.815 (4)Å]. Intermolecular C—H⋯O interactions are also observed. The iodide anions are disordered with occupancy ratios of 0.94 (1):0.06 (1) and 0.91 (1):0.09 (1). The cationic molecule is planar in structure with a small torsion resulting from the dihydropyridine ring.
Related literature
For the synthesis of the title compound, see: Iwasa et al. (1997). The title compound is a derivative of the natural product berberine. For the anti-parasitic activity of berberine and its derivatives, see: Nkwengoua et al. (2009); Acero et al. (1995); Ghosh et al. (1985); Wright et al. (2000); Iwasa et al. (1998); Sheng et al. 1997); McCall et al. (1994). For a related structure, see: Chen et al. (2009). For the Chebychev weighting scheme, see: Prince (1982); Watkin (1994).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2009); cell HKL-2000 (Otwinowski & Minor, 1997); data reduction: CrystalClear; program(s) used to solve structure: CrystalStructure (Rigaku, 2009) and SIR2004 (Burla et al., 2005); program(s) used to refine structure: CRYSTALS (Betteridge et al., 2003); molecular graphics: CAMERON (Watkin et al., 1996); software used to prepare material for publication: CRYSTALS.
Supporting information
10.1107/S1600536810036664/jj2056sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536810036664/jj2056Isup2.hkl
The title compound was prepared by vacuum
of berberine hydrochloride followed by alkylation with ethyl iodide (Iwasa et al., 1997). The crystals suitable for single-crystal X-ray diffraction were grown in DMSO-d6. The crystal was diffracted in the cold stream of an X-Stream 2000 Liquid nitrogen generator with an open-flow nitrogen cryostat with a nominal stability of 0.1 K.The H atoms were all located in a difference map, but those attached to carbon atoms were repositioned geometrically. The H atoms were initially refined with soft restraints on the bond lengths and angles to regularize their geometry (C—H in the range 0.93–0.98, O—H = 0.82 Å) and Uiso(H) (in the range 1.2–1.5 times Ueq of the parent atom), after which the positions were refined with riding constraints. The ethyl groups on the molecules were found to have some disorder, with the methylene carbon (C20B) demonstrating the largest thermal parameters. The disordered iodide anions were solved with two partially occupied positions. The anisotropic parameters Uxy were restrained for each of the iodide pairs during refinement.
Data collection: CrystalClear (Rigaku, 2009); cell
HKL-2000 (Otwinowski & Minor, 1997); data reduction: CrystalClear (Rigaku, 2009); program(s) used to solve structure: CrystalStructure (Rigaku, 2009) and SIR2004 (Burla et al., 2005); program(s) used to refine structure: CRYSTALS (Betteridge et al., 2003); molecular graphics: CAMERON (Watkin et al., 1996); software used to prepare material for publication: CRYSTALS (Betteridge et al., 2003).2C21H20NO4+·2I−·H2O | Z = 2 |
Mr = 972.61 | F(000) = 972 |
Triclinic, P1 | Dx = 1.685 Mg m−3 |
Hall symbol: -P 1 | Melting point: 257 K |
a = 11.036 (3) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 13.449 (4) Å | Cell parameters from 50086 reflections |
c = 14.086 (4) Å | θ = 3–27.5° |
α = 80.442 (6)° | µ = 1.70 mm−1 |
β = 71.121 (5)° | T = 93 K |
γ = 76.875 (5)° | Needle, yellow |
V = 1916.8 (9) Å3 | 1.00 × 0.10 × 0.10 mm |
Rigaku R-AXIS RAPID II image plate diffractometer | 8751 independent reflections |
Radiation source: Mo sealed tube | 4563 reflections with I > 2.0σ(I) |
Graphite monochromator | Rint = 0.101 |
Detector resolution: 10 pixels mm-1 | θmax = 27.5°, θmin = 3.1° |
ω scans | h = −14→14 |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | k = −17→17 |
Tmin = 0.469, Tmax = 0.712 | l = −18→18 |
50086 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)] = 0.059 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.195 | All H-atom parameters refined |
S = 0.96 | Method, part 1, Chebychev polynomial, (Watkin, 1994; Prince, 1982) [weight] = 1.0/[A0*T0(x) + A1*T1(x) ··· + An-1]*Tn-1(x)] where Ai are the Chebychev coefficients listed below and x = F /Fmax Method = Robust Weighting (Prince, 1982) W = [weight] * [1-(deltaF/6*sigmaF)2]2 Ai are: 4.85 6.23 1.54 |
8751 reflections | (Δ/σ)max = 0.001 |
502 parameters | Δρmax = 1.75 e Å−3 |
12 restraints | Δρmin = −2.26 e Å−3 |
0 constraints |
2C21H20NO4+·2I−·H2O | γ = 76.875 (5)° |
Mr = 972.61 | V = 1916.8 (9) Å3 |
Triclinic, P1 | Z = 2 |
a = 11.036 (3) Å | Mo Kα radiation |
b = 13.449 (4) Å | µ = 1.70 mm−1 |
c = 14.086 (4) Å | T = 93 K |
α = 80.442 (6)° | 1.00 × 0.10 × 0.10 mm |
β = 71.121 (5)° |
Rigaku R-AXIS RAPID II image plate diffractometer | 8751 independent reflections |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | 4563 reflections with I > 2.0σ(I) |
Tmin = 0.469, Tmax = 0.712 | Rint = 0.101 |
50086 measured reflections |
R[F2 > 2σ(F2)] = 0.059 | 12 restraints |
wR(F2) = 0.195 | All H-atom parameters refined |
S = 0.96 | Δρmax = 1.75 e Å−3 |
8751 reflections | Δρmin = −2.26 e Å−3 |
502 parameters |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
O1A | 0.7061 (5) | 0.4522 (4) | 0.7015 (4) | 0.0527 | |
C1A | 0.5927 (8) | 0.5331 (6) | 0.7096 (6) | 0.0517 | |
O2A | 0.5226 (6) | 0.5086 (4) | 0.6480 (4) | 0.0577 | |
C2A | 0.5222 (8) | 0.3441 (6) | 0.5954 (6) | 0.0554 | |
C3A | 0.5468 (8) | 0.1682 (6) | 0.5415 (6) | 0.0552 | |
C4A | 0.5678 (7) | 0.0617 (6) | 0.5900 (6) | 0.0511 | |
N1A | 0.7020 (5) | 0.0278 (4) | 0.5983 (4) | 0.0413 | |
C5A | 0.7560 (7) | −0.0722 (5) | 0.5920 (5) | 0.0413 | |
C6A | 0.9343 (6) | −0.2175 (5) | 0.6016 (5) | 0.0401 | |
C7A | 1.0547 (7) | −0.2531 (5) | 0.6186 (5) | 0.0436 | |
C8A | 1.1203 (6) | −0.1848 (5) | 0.6375 (5) | 0.0417 | |
C9A | 1.0685 (7) | −0.0817 (5) | 0.6410 (5) | 0.0440 | |
C10A | 0.8835 (6) | 0.0610 (5) | 0.6336 (5) | 0.0398 | |
C11A | 0.7418 (7) | 0.2722 (5) | 0.6670 (5) | 0.0462 | |
C12A | 0.6771 (7) | 0.3709 (5) | 0.6694 (5) | 0.0437 | |
C13A | 0.5686 (7) | 0.4057 (6) | 0.6358 (6) | 0.0490 | |
C14A | 0.5878 (7) | 0.2405 (5) | 0.5902 (5) | 0.0438 | |
C15A | 0.8781 (6) | −0.1118 (5) | 0.6061 (4) | 0.0392 | |
C16A | 0.9456 (6) | −0.0429 (5) | 0.6270 (5) | 0.0411 | |
C17A | 0.7628 (6) | 0.0966 (5) | 0.6204 (4) | 0.0378 | |
C18A | 0.6934 (6) | 0.2049 (5) | 0.6268 (5) | 0.0406 | |
O3A | 1.1012 (5) | −0.3557 (4) | 0.6163 (4) | 0.0471 | |
O4A | 0.8648 (5) | −0.2821 (3) | 0.5852 (3) | 0.0428 | |
C19A | 1.2226 (8) | −0.3942 (5) | 0.6361 (6) | 0.0497 | |
C20A | 0.9150 (8) | −0.3152 (6) | 0.4853 (5) | 0.0531 | |
C21A | 0.8288 (9) | −0.3797 (7) | 0.4743 (7) | 0.0662 | |
O1B | 0.7780 (5) | −0.4304 (3) | 0.8199 (4) | 0.0481 | |
C1B | 0.8993 (7) | −0.5023 (5) | 0.7914 (6) | 0.0507 | |
O2B | 0.9851 (5) | −0.4741 (4) | 0.8366 (4) | 0.0528 | |
C2B | 0.9914 (7) | −0.3031 (6) | 0.8764 (5) | 0.0471 | |
C3B | 0.9793 (7) | −0.1200 (5) | 0.9045 (5) | 0.0463 | |
C4B | 0.8775 (7) | −0.0374 (5) | 0.9633 (6) | 0.0468 | |
N1B | 0.7687 (5) | −0.0013 (4) | 0.9196 (4) | 0.0390 | |
C5B | 0.7139 (7) | 0.0966 (5) | 0.9225 (5) | 0.0442 | |
C6B | 0.5421 (7) | 0.2398 (5) | 0.8997 (5) | 0.0433 | |
C7B | 0.4229 (6) | 0.2745 (5) | 0.8790 (5) | 0.0423 | |
C8B | 0.3624 (6) | 0.2055 (5) | 0.8563 (5) | 0.0412 | |
C9B | 0.4177 (6) | 0.1029 (5) | 0.8509 (5) | 0.0399 | |
C10B | 0.6057 (6) | −0.0366 (5) | 0.8629 (4) | 0.0368 | |
C11B | 0.7373 (6) | −0.2504 (5) | 0.8535 (5) | 0.0415 | |
C12B | 0.8119 (6) | −0.3468 (5) | 0.8398 (5) | 0.0407 | |
C13B | 0.9343 (7) | −0.3723 (5) | 0.8522 (5) | 0.0449 | |
C14B | 0.9186 (6) | −0.2035 (5) | 0.8885 (5) | 0.0433 | |
C15B | 0.5975 (6) | 0.1356 (5) | 0.8969 (5) | 0.0399 | |
C16B | 0.5391 (6) | 0.0654 (5) | 0.8706 (4) | 0.0363 | |
C17B | 0.7212 (6) | −0.0725 (5) | 0.8861 (4) | 0.0371 | |
C18B | 0.7938 (6) | −0.1769 (5) | 0.8779 (5) | 0.0400 | |
O4B | 0.6121 (5) | 0.3048 (4) | 0.9131 (4) | 0.0498 | |
O3B | 0.3732 (5) | 0.3765 (4) | 0.8823 (4) | 0.0489 | |
C19B | 0.2472 (8) | 0.4115 (6) | 0.8666 (7) | 0.0569 | |
C20B | 0.5681 (9) | 0.3468 (11) | 1.0051 (8) | 0.0893 | |
C21B | 0.6740 (9) | 0.3896 (8) | 1.0199 (6) | 0.0634 | |
O5 | 1.2817 (6) | 0.0700 (5) | 0.6183 (4) | 0.0635 | |
I1A | 1.02838 (5) | 0.19860 (3) | 0.80552 (4) | 0.0447 | 0.9379 |
I1A' | 1.1037 (7) | 0.1783 (5) | 0.7437 (6) | 0.0447 | 0.0621 |
I1B | 1.39483 (6) | −0.16491 (4) | 0.75430 (5) | 0.0520 | 0.9057 |
I1B' | 1.4616 (6) | −0.1882 (4) | 0.7030 (5) | 0.0520 | 0.0943 |
H1A | 0.6187 | 0.5993 | 0.6853 | 0.0619* | |
H2A | 0.5380 | 0.5327 | 0.7790 | 0.0618* | |
H3A | 0.4499 | 0.3682 | 0.5718 | 0.0661* | |
H4A | 0.5966 | 0.1695 | 0.4707 | 0.0661* | |
H5A | 0.4542 | 0.1889 | 0.5483 | 0.0663* | |
H6A | 0.5042 | 0.0590 | 0.6571 | 0.0612* | |
H7A | 0.5560 | 0.0157 | 0.5490 | 0.0607* | |
H8A | 0.7107 | −0.1157 | 0.5775 | 0.0495* | |
H9A | 1.2018 | −0.2098 | 0.6474 | 0.0498* | |
H10A | 1.1145 | −0.0368 | 0.6524 | 0.0527* | |
H11A | 0.9261 | 0.1064 | 0.6479 | 0.0480* | |
H12A | 0.8143 | 0.2501 | 0.6909 | 0.0558* | |
H13A | 1.2430 | −0.4679 | 0.6357 | 0.0750* | |
H14A | 1.2168 | −0.3759 | 0.7007 | 0.0748* | |
H15A | 1.2896 | −0.3646 | 0.5852 | 0.0749* | |
H16A | 1.0021 | −0.3568 | 0.4784 | 0.0636* | |
H17A | 0.9200 | −0.2562 | 0.4342 | 0.0642* | |
H18A | 0.8548 | −0.3958 | 0.4057 | 0.0992* | |
H19A | 0.8354 | −0.4422 | 0.5184 | 0.0988* | |
H20A | 0.7397 | −0.3432 | 0.4928 | 0.0989* | |
H1B | 0.8849 | −0.5716 | 0.8167 | 0.0610* | |
H2B | 0.9354 | −0.4972 | 0.7183 | 0.0609* | |
H3B | 1.0747 | −0.3211 | 0.8837 | 0.0571* | |
H4B | 1.0408 | −0.1494 | 0.9427 | 0.0559* | |
H5B | 1.0244 | −0.0878 | 0.8384 | 0.0558* | |
H6B | 0.8441 | −0.0668 | 1.0323 | 0.0558* | |
H7B | 0.9172 | 0.0200 | 0.9622 | 0.0559* | |
H8B | 0.7535 | 0.1410 | 0.9415 | 0.0528* | |
H9B | 0.2816 | 0.2301 | 0.8448 | 0.0488* | |
H10B | 0.3754 | 0.0586 | 0.8342 | 0.0478* | |
H11B | 0.5706 | −0.0817 | 0.8411 | 0.0439* | |
H12B | 0.6540 | −0.2340 | 0.8465 | 0.0500* | |
H13B | 0.2236 | 0.4843 | 0.8700 | 0.0849* | |
H14B | 0.1834 | 0.3776 | 0.9178 | 0.0848* | |
H15B | 0.2506 | 0.3966 | 0.8011 | 0.0848* | |
H16B | 0.5428 | 0.2942 | 1.0590 | 0.1070* | |
H17B | 0.4937 | 0.4011 | 1.0052 | 0.1071* | |
H18B | 0.6422 | 0.4194 | 1.0829 | 0.0951* | |
H19B | 0.7468 | 0.3356 | 1.0206 | 0.0951* | |
H20B | 0.6997 | 0.4413 | 0.9653 | 0.0949* | |
H21 | 1.2190 | 0.0950 | 0.6740 | 0.0941* | |
H22 | 1.2916 | 0.0105 | 0.6502 | 0.0944* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1A | 0.058 (3) | 0.040 (2) | 0.063 (3) | −0.006 (2) | −0.024 (2) | −0.005 (2) |
C1A | 0.055 (4) | 0.042 (3) | 0.061 (4) | −0.003 (3) | −0.022 (3) | −0.010 (3) |
O2A | 0.065 (3) | 0.045 (3) | 0.069 (3) | 0.000 (2) | −0.028 (3) | −0.019 (2) |
C2A | 0.059 (4) | 0.055 (4) | 0.062 (4) | −0.004 (3) | −0.033 (4) | −0.015 (3) |
C3A | 0.055 (4) | 0.059 (4) | 0.059 (4) | −0.011 (3) | −0.022 (3) | −0.013 (3) |
C4A | 0.044 (3) | 0.053 (4) | 0.065 (4) | −0.019 (3) | −0.024 (3) | −0.002 (3) |
N1A | 0.045 (3) | 0.043 (3) | 0.041 (3) | −0.013 (2) | −0.016 (2) | −0.006 (2) |
C5A | 0.048 (3) | 0.045 (3) | 0.038 (3) | −0.018 (3) | −0.017 (3) | −0.004 (2) |
C6A | 0.048 (3) | 0.038 (3) | 0.040 (3) | −0.011 (3) | −0.015 (3) | −0.009 (2) |
C7A | 0.052 (4) | 0.042 (3) | 0.041 (3) | −0.012 (3) | −0.017 (3) | −0.005 (2) |
C8A | 0.043 (3) | 0.046 (3) | 0.041 (3) | −0.010 (3) | −0.018 (3) | −0.003 (3) |
C9A | 0.052 (4) | 0.048 (3) | 0.041 (3) | −0.018 (3) | −0.018 (3) | −0.009 (3) |
C10A | 0.041 (3) | 0.044 (3) | 0.041 (3) | −0.006 (3) | −0.020 (3) | −0.010 (2) |
C11A | 0.055 (4) | 0.041 (3) | 0.050 (4) | −0.017 (3) | −0.022 (3) | −0.001 (3) |
C12A | 0.051 (4) | 0.045 (3) | 0.038 (3) | −0.016 (3) | −0.014 (3) | −0.004 (2) |
C13A | 0.052 (4) | 0.048 (4) | 0.050 (4) | −0.004 (3) | −0.018 (3) | −0.013 (3) |
C14A | 0.044 (3) | 0.043 (3) | 0.048 (3) | −0.006 (3) | −0.016 (3) | −0.011 (3) |
C15A | 0.048 (3) | 0.042 (3) | 0.032 (3) | −0.013 (3) | −0.013 (2) | −0.006 (2) |
C16A | 0.047 (3) | 0.046 (3) | 0.033 (3) | −0.015 (3) | −0.013 (3) | −0.003 (2) |
C17A | 0.041 (3) | 0.042 (3) | 0.035 (3) | −0.009 (2) | −0.014 (2) | −0.007 (2) |
C18A | 0.042 (3) | 0.046 (3) | 0.037 (3) | −0.010 (3) | −0.015 (3) | −0.006 (2) |
O3A | 0.053 (3) | 0.040 (2) | 0.055 (3) | −0.007 (2) | −0.024 (2) | −0.008 (2) |
O4A | 0.051 (3) | 0.041 (2) | 0.044 (2) | −0.016 (2) | −0.017 (2) | −0.0088 (18) |
C19A | 0.058 (4) | 0.038 (3) | 0.058 (4) | −0.002 (3) | −0.027 (3) | −0.008 (3) |
C20A | 0.054 (4) | 0.068 (5) | 0.046 (4) | −0.016 (3) | −0.016 (3) | −0.019 (3) |
C21A | 0.067 (5) | 0.075 (5) | 0.066 (5) | −0.034 (4) | −0.009 (4) | −0.027 (4) |
O1B | 0.046 (2) | 0.033 (2) | 0.071 (3) | −0.0049 (19) | −0.026 (2) | −0.011 (2) |
C1B | 0.046 (4) | 0.038 (3) | 0.068 (4) | 0.000 (3) | −0.021 (3) | −0.011 (3) |
O2B | 0.056 (3) | 0.039 (2) | 0.070 (3) | 0.001 (2) | −0.026 (3) | −0.020 (2) |
C2B | 0.045 (3) | 0.054 (4) | 0.046 (3) | −0.002 (3) | −0.017 (3) | −0.017 (3) |
C3B | 0.042 (3) | 0.050 (4) | 0.053 (4) | −0.006 (3) | −0.019 (3) | −0.015 (3) |
C4B | 0.050 (4) | 0.043 (3) | 0.058 (4) | −0.004 (3) | −0.030 (3) | −0.013 (3) |
N1B | 0.035 (2) | 0.044 (3) | 0.047 (3) | −0.010 (2) | −0.021 (2) | −0.007 (2) |
C5B | 0.049 (4) | 0.041 (3) | 0.050 (3) | −0.014 (3) | −0.020 (3) | −0.007 (3) |
C6B | 0.047 (3) | 0.039 (3) | 0.048 (3) | −0.011 (3) | −0.017 (3) | −0.008 (3) |
C7B | 0.042 (3) | 0.041 (3) | 0.044 (3) | −0.006 (3) | −0.012 (3) | −0.010 (3) |
C8B | 0.042 (3) | 0.042 (3) | 0.043 (3) | −0.005 (3) | −0.017 (3) | −0.008 (2) |
C9B | 0.042 (3) | 0.044 (3) | 0.042 (3) | −0.012 (3) | −0.020 (3) | −0.008 (2) |
C10B | 0.040 (3) | 0.039 (3) | 0.039 (3) | −0.010 (2) | −0.018 (2) | −0.008 (2) |
C11B | 0.044 (3) | 0.034 (3) | 0.050 (3) | −0.008 (2) | −0.019 (3) | −0.003 (2) |
C12B | 0.042 (3) | 0.035 (3) | 0.049 (3) | −0.012 (2) | −0.015 (3) | −0.005 (2) |
C13B | 0.049 (4) | 0.042 (3) | 0.047 (3) | −0.002 (3) | −0.020 (3) | −0.009 (3) |
C14B | 0.042 (3) | 0.051 (4) | 0.044 (3) | −0.011 (3) | −0.017 (3) | −0.012 (3) |
C15B | 0.044 (3) | 0.041 (3) | 0.040 (3) | −0.012 (3) | −0.016 (3) | −0.007 (2) |
C16B | 0.033 (3) | 0.042 (3) | 0.037 (3) | −0.009 (2) | −0.010 (2) | −0.009 (2) |
C17B | 0.039 (3) | 0.042 (3) | 0.037 (3) | −0.011 (2) | −0.016 (2) | −0.008 (2) |
C18B | 0.043 (3) | 0.041 (3) | 0.041 (3) | −0.010 (3) | −0.017 (3) | −0.006 (2) |
O4B | 0.054 (3) | 0.045 (2) | 0.055 (3) | −0.017 (2) | −0.012 (2) | −0.017 (2) |
O3B | 0.053 (3) | 0.036 (2) | 0.062 (3) | −0.004 (2) | −0.024 (2) | −0.008 (2) |
C19B | 0.062 (5) | 0.045 (4) | 0.071 (5) | 0.001 (3) | −0.035 (4) | −0.010 (3) |
C20B | 0.062 (5) | 0.154 (11) | 0.070 (6) | −0.041 (6) | −0.002 (4) | −0.068 (7) |
C21B | 0.062 (5) | 0.092 (6) | 0.049 (4) | −0.036 (5) | −0.019 (4) | −0.010 (4) |
O5 | 0.060 (3) | 0.081 (4) | 0.054 (3) | −0.023 (3) | −0.017 (3) | −0.006 (3) |
I1A | 0.0507 (3) | 0.0426 (2) | 0.0484 (3) | −0.01080 (19) | −0.0248 (2) | −0.00267 (18) |
I1A' | 0.0507 (3) | 0.0426 (2) | 0.0484 (3) | −0.01080 (19) | −0.0248 (2) | −0.00267 (18) |
I1B | 0.0614 (3) | 0.0476 (3) | 0.0631 (3) | −0.0168 (2) | −0.0366 (3) | −0.0039 (2) |
I1B' | 0.0614 (3) | 0.0476 (3) | 0.0631 (3) | −0.0168 (2) | −0.0366 (3) | −0.0039 (2) |
O1A—C1A | 1.446 (9) | O1B—C12B | 1.358 (7) |
O1A—C12A | 1.386 (8) | C1B—O2B | 1.441 (9) |
C1A—O2A | 1.450 (9) | C1B—H1B | 0.971 |
C1A—H1A | 0.972 | C1B—H2B | 0.972 |
C1A—H2A | 0.968 | O2B—C13B | 1.382 (8) |
O2A—C13A | 1.381 (9) | C2B—C13B | 1.374 (10) |
C2A—C13A | 1.345 (10) | C2B—C14B | 1.404 (10) |
C2A—C14A | 1.419 (10) | C2B—H3B | 0.930 |
C2A—H3A | 0.934 | C3B—C4B | 1.523 (10) |
C3A—C4A | 1.483 (11) | C3B—C14B | 1.511 (9) |
C3A—C14A | 1.497 (10) | C3B—H4B | 0.975 |
C3A—H4A | 0.969 | C3B—H5B | 0.982 |
C3A—H5A | 0.974 | C4B—N1B | 1.472 (8) |
C4A—N1A | 1.485 (9) | C4B—H6B | 0.971 |
C4A—H6A | 0.978 | C4B—H7B | 0.967 |
C4A—H7A | 0.967 | N1B—C5B | 1.319 (8) |
N1A—C5A | 1.347 (9) | N1B—C17B | 1.398 (7) |
N1A—C17A | 1.383 (8) | C5B—C15B | 1.409 (9) |
C5A—C15A | 1.396 (9) | C5B—H8B | 0.932 |
C5A—H8A | 0.935 | C6B—C7B | 1.399 (9) |
C6A—C7A | 1.390 (9) | C6B—C15B | 1.398 (9) |
C6A—C15A | 1.420 (9) | C6B—O4B | 1.362 (8) |
C6A—O4A | 1.370 (7) | C7B—C8B | 1.388 (9) |
C7A—C8A | 1.396 (9) | C7B—O3B | 1.359 (8) |
C7A—O3A | 1.360 (8) | C8B—C9B | 1.379 (9) |
C8A—C9A | 1.376 (10) | C8B—H9B | 0.934 |
C8A—H9A | 0.933 | C9B—C16B | 1.420 (8) |
C9A—C16A | 1.403 (9) | C9B—H10B | 0.934 |
C9A—H10A | 0.933 | C10B—C16B | 1.406 (8) |
C10A—C16A | 1.414 (9) | C10B—C17B | 1.379 (8) |
C10A—C17A | 1.371 (8) | C10B—H11B | 0.925 |
C10A—H11A | 0.930 | C11B—C12B | 1.375 (9) |
C11A—C12A | 1.357 (10) | C11B—C18B | 1.419 (8) |
C11A—C18A | 1.418 (9) | C11B—H12B | 0.930 |
C11A—H12A | 0.935 | C12B—C13B | 1.377 (9) |
C12A—C13A | 1.383 (10) | C14B—C18B | 1.393 (9) |
C14A—C18A | 1.381 (9) | C15B—C16B | 1.410 (8) |
C15A—C16A | 1.429 (8) | C17B—C18B | 1.452 (9) |
C17A—C18A | 1.486 (9) | O4B—C20B | 1.395 (9) |
O3A—C19A | 1.421 (9) | O3B—C19B | 1.439 (9) |
O4A—C20A | 1.441 (8) | C19B—H13B | 0.959 |
C19A—H13A | 0.966 | C19B—H14B | 0.966 |
C19A—H14A | 0.960 | C19B—H15B | 0.963 |
C19A—H15A | 0.957 | C20B—C21B | 1.497 (11) |
C20A—C21A | 1.481 (10) | C20B—H16B | 0.963 |
C20A—H16A | 0.980 | C20B—H17B | 0.967 |
C20A—H17A | 0.978 | C21B—H18B | 0.961 |
C21A—H18A | 0.962 | C21B—H19B | 0.955 |
C21A—H19A | 0.962 | C21B—H20B | 0.962 |
C21A—H20A | 0.967 | O5—H21 | 0.916 |
O1B—C1B | 1.443 (8) | O5—H22 | 0.852 |
C1A—O1A—C12A | 105.6 (5) | O1B—C1B—O2B | 106.1 (5) |
O1A—C1A—O2A | 105.9 (5) | O1B—C1B—H1B | 109.9 |
O1A—C1A—H1A | 110.5 | O2B—C1B—H1B | 110.5 |
O2A—C1A—H1A | 110.8 | O1B—C1B—H2B | 109.9 |
O1A—C1A—H2A | 109.7 | O2B—C1B—H2B | 110.6 |
O2A—C1A—H2A | 109.2 | H1B—C1B—H2B | 109.7 |
H1A—C1A—H2A | 110.6 | C1B—O2B—C13B | 104.1 (5) |
C1A—O2A—C13A | 105.2 (5) | C13B—C2B—C14B | 116.8 (6) |
C13A—C2A—C14A | 117.2 (7) | C13B—C2B—H3B | 121.8 |
C13A—C2A—H3A | 121.7 | C14B—C2B—H3B | 121.4 |
C14A—C2A—H3A | 121.1 | C4B—C3B—C14B | 111.8 (6) |
C4A—C3A—C14A | 111.6 (6) | C4B—C3B—H4B | 107.8 |
C4A—C3A—H4A | 109.2 | C14B—C3B—H4B | 109.7 |
C14A—C3A—H4A | 109.2 | C4B—C3B—H5B | 108.5 |
C4A—C3A—H5A | 107.5 | C14B—C3B—H5B | 108.9 |
C14A—C3A—H5A | 109.6 | H4B—C3B—H5B | 110.2 |
H4A—C3A—H5A | 109.8 | C3B—C4B—N1B | 111.1 (5) |
C3A—C4A—N1A | 112.0 (6) | C3B—C4B—H6B | 108.1 |
C3A—C4A—H6A | 108.0 | N1B—C4B—H6B | 109.0 |
N1A—C4A—H6A | 110.1 | C3B—C4B—H7B | 109.5 |
C3A—C4A—H7A | 108.9 | N1B—C4B—H7B | 109.1 |
N1A—C4A—H7A | 107.2 | H6B—C4B—H7B | 110.0 |
H6A—C4A—H7A | 110.7 | C4B—N1B—C5B | 117.3 (5) |
C4A—N1A—C5A | 117.7 (5) | C4B—N1B—C17B | 119.2 (5) |
C4A—N1A—C17A | 119.8 (6) | C5B—N1B—C17B | 123.3 (5) |
C5A—N1A—C17A | 122.2 (6) | N1B—C5B—C15B | 121.7 (6) |
N1A—C5A—C15A | 121.4 (6) | N1B—C5B—H8B | 119.1 |
N1A—C5A—H8A | 119.0 | C15B—C5B—H8B | 119.2 |
C15A—C5A—H8A | 119.6 | C7B—C6B—C15B | 118.8 (6) |
C7A—C6A—C15A | 119.2 (6) | C7B—C6B—O4B | 122.5 (6) |
C7A—C6A—O4A | 122.1 (6) | C15B—C6B—O4B | 118.5 (6) |
C15A—C6A—O4A | 118.7 (6) | C6B—C7B—C8B | 119.7 (6) |
C6A—C7A—C8A | 120.0 (6) | C6B—C7B—O3B | 116.6 (6) |
C6A—C7A—O3A | 116.2 (6) | C8B—C7B—O3B | 123.7 (6) |
C8A—C7A—O3A | 123.8 (6) | C7B—C8B—C9B | 122.1 (6) |
C7A—C8A—C9A | 121.9 (6) | C7B—C8B—H9B | 118.2 |
C7A—C8A—H9A | 118.8 | C9B—C8B—H9B | 119.8 |
C9A—C8A—H9A | 119.3 | C8B—C9B—C16B | 119.6 (5) |
C8A—C9A—C16A | 120.0 (6) | C8B—C9B—H10B | 120.1 |
C8A—C9A—H10A | 120.7 | C16B—C9B—H10B | 120.3 |
C16A—C9A—H10A | 119.3 | C16B—C10B—C17B | 122.9 (5) |
C16A—C10A—C17A | 122.2 (6) | C16B—C10B—H11B | 118.5 |
C16A—C10A—H11A | 118.6 | C17B—C10B—H11B | 118.6 |
C17A—C10A—H11A | 119.2 | C12B—C11B—C18B | 117.0 (6) |
C12A—C11A—C18A | 116.5 (6) | C12B—C11B—H12B | 121.4 |
C12A—C11A—H12A | 121.4 | C18B—C11B—H12B | 121.5 |
C18A—C11A—H12A | 122.1 | C11B—C12B—O1B | 128.0 (6) |
O1A—C12A—C11A | 128.2 (6) | C11B—C12B—C13B | 121.7 (6) |
O1A—C12A—C13A | 109.0 (6) | O1B—C12B—C13B | 110.1 (6) |
C11A—C12A—C13A | 122.8 (6) | O2B—C13B—C12B | 109.4 (6) |
C12A—C13A—O2A | 110.2 (6) | O2B—C13B—C2B | 127.9 (6) |
C12A—C13A—C2A | 122.0 (7) | C12B—C13B—C2B | 122.6 (6) |
O2A—C13A—C2A | 127.8 (7) | C3B—C14B—C2B | 120.1 (6) |
C3A—C14A—C2A | 120.7 (6) | C3B—C14B—C18B | 118.4 (6) |
C3A—C14A—C18A | 118.5 (6) | C2B—C14B—C18B | 121.3 (6) |
C2A—C14A—C18A | 120.8 (6) | C5B—C15B—C6B | 120.5 (6) |
C6A—C15A—C5A | 121.7 (6) | C5B—C15B—C16B | 117.5 (6) |
C6A—C15A—C16A | 120.2 (6) | C6B—C15B—C16B | 122.0 (6) |
C5A—C15A—C16A | 118.2 (6) | C9B—C16B—C15B | 117.9 (6) |
C15A—C16A—C10A | 117.8 (6) | C9B—C16B—C10B | 123.8 (5) |
C15A—C16A—C9A | 118.7 (6) | C15B—C16B—C10B | 118.3 (5) |
C10A—C16A—C9A | 123.4 (6) | N1B—C17B—C10B | 116.0 (5) |
N1A—C17A—C10A | 118.1 (6) | N1B—C17B—C18B | 119.4 (5) |
N1A—C17A—C18A | 117.6 (5) | C10B—C17B—C18B | 124.6 (5) |
C10A—C17A—C18A | 124.3 (6) | C17B—C18B—C11B | 118.4 (6) |
C17A—C18A—C11A | 118.5 (6) | C17B—C18B—C14B | 121.0 (6) |
C17A—C18A—C14A | 120.8 (6) | C11B—C18B—C14B | 120.5 (6) |
C11A—C18A—C14A | 120.7 (6) | C6B—O4B—C20B | 117.1 (6) |
C7A—O3A—C19A | 117.2 (5) | C7B—O3B—C19B | 116.7 (5) |
C6A—O4A—C20A | 113.4 (5) | O3B—C19B—H13B | 108.7 |
O3A—C19A—H13A | 109.4 | O3B—C19B—H14B | 109.9 |
O3A—C19A—H14A | 109.1 | H13B—C19B—H14B | 109.9 |
H13A—C19A—H14A | 110.2 | O3B—C19B—H15B | 109.9 |
O3A—C19A—H15A | 109.5 | H13B—C19B—H15B | 109.2 |
H13A—C19A—H15A | 109.3 | H14B—C19B—H15B | 109.2 |
H14A—C19A—H15A | 109.3 | O4B—C20B—C21B | 110.0 (7) |
O4A—C20A—C21A | 108.7 (6) | O4B—C20B—H16B | 109.3 |
O4A—C20A—H16A | 107.8 | C21B—C20B—H16B | 109.6 |
C21A—C20A—H16A | 109.0 | O4B—C20B—H17B | 109.0 |
O4A—C20A—H17A | 110.6 | C21B—C20B—H17B | 109.4 |
C21A—C20A—H17A | 110.7 | H16B—C20B—H17B | 109.5 |
H16A—C20A—H17A | 109.9 | C20B—C21B—H18B | 109.3 |
C20A—C21A—H18A | 109.8 | C20B—C21B—H19B | 109.1 |
C20A—C21A—H19A | 109.2 | H18B—C21B—H19B | 109.7 |
H18A—C21A—H19A | 109.5 | C20B—C21B—H20B | 109.1 |
C20A—C21A—H20A | 109.4 | H18B—C21B—H20B | 109.8 |
H18A—C21A—H20A | 109.9 | H19B—C21B—H20B | 109.7 |
H19A—C21A—H20A | 109.1 | H21—O5—H22 | 90.7 |
C1B—O1B—C12B | 104.4 (5) |
D—H···A | D—H | H···A | D···A | D—H···A |
C9A—H10A···O5 | 0.93 | 2.47 | 3.358 (11) | 159 |
C21B—H20B···O1Bi | 0.96 | 2.51 | 3.466 (11) | 177 |
Symmetry code: (i) x, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | 2C21H20NO4+·2I−·H2O |
Mr | 972.61 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 93 |
a, b, c (Å) | 11.036 (3), 13.449 (4), 14.086 (4) |
α, β, γ (°) | 80.442 (6), 71.121 (5), 76.875 (5) |
V (Å3) | 1916.8 (9) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 1.70 |
Crystal size (mm) | 1.00 × 0.10 × 0.10 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID II image plate diffractometer |
Absorption correction | Multi-scan (ABSCOR; Higashi, 1995) |
Tmin, Tmax | 0.469, 0.712 |
No. of measured, independent and observed [I > 2.0σ(I)] reflections | 50086, 8751, 4563 |
Rint | 0.101 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.059, 0.195, 0.96 |
No. of reflections | 8751 |
No. of parameters | 502 |
No. of restraints | 12 |
H-atom treatment | All H-atom parameters refined |
Δρmax, Δρmin (e Å−3) | 1.75, −2.26 |
Computer programs: CrystalClear (Rigaku, 2009), HKL-2000 (Otwinowski & Minor, 1997), CrystalStructure (Rigaku, 2009) and SIR2004 (Burla et al., 2005), CRYSTALS (Betteridge et al., 2003), CAMERON (Watkin et al., 1996).
D—H···A | D—H | H···A | D···A | D—H···A |
C9A—H10A···O5 | 0.93 | 2.47 | 3.358 (11) | 159 |
C21B—H20B···O1Bi | 0.96 | 2.51 | 3.466 (11) | 177 |
Symmetry code: (i) x, y+1, z. |
Acknowledgements
This study was supported by the University of Minnesota Undergraduate Research Opportunities Program (UROP) and the NSF (grant CHE-0922366 for the X-ray diffractometer).
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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.
The title compound, a derivative of the natural product berberine, is of interest with respect to its anti-parasite activity and biological properties Chen et al. (2009). Of particular interest is the discovery that berberine and its analogs inhibit the growth of strains of the parasites Leishmania (Nkwengoua et al., 2009, Acero et al., 1995, Ghosh et al., 1985), Trypanosoma (Nkwengoua et al., 2009), and Plasmodium (Wright et al., 2000, Iwasa et al., 1998, Sheng et al., 1997, McCall et al., 1994). Based on these findings and in our continued effort to characterize compounds that may inhibit the life cycle of the parasite Toxoplasma gondii we have synthesized the 9-ethyl analog of berberine.
The title compound, 2(C21H20NO4+), 2(I-), H2O, crystallizes in the P-1 space group with two independent molecules in the unit cell. A solvent water molecule occupies the lattice at H-bonding distance from the disordered iodide (1.94 & 0.06) anions [O5—I1A 3.509 (6) and O5—I1B 3.600 (6) Å]. The compound crystallizes with a slightly twisted planar structure due to the dihydropyridine moiety, which results in torsion angles of 17.7 (5)° (C15A/C16A/C11A/C2A) and 6.1 (5)° (C15B/C16B/C11B/C2B) between the planes of the isoquiniline and benzodioxole moieties for molecules A and B respectively. The molecules are layered in the crystal lattice with normal π—π stacking distances between centroids of the rings of molecules A and B of 3.571 (4)Å (rings C6A/C7A/C8A/C9A/C15A/C16A to C2B/C11B/C12B/C13B/C14B/C18B), 3.839 (4)Å (rings N1A/C5A/C10A/C15A/C16A/C17A to N1B/C5B/C10B/C15B/C16B/C17B), and 3.686 (4)Å (rings C2A/C11A/C12A/C13A/C14A/C18A to C6B/C7B/C8B/C9B/C15B/C16B). Identical molecules neighboring each other are located at further stacking distances with the closest controid distance of 3.815 (4)Å between molecules A to A and 3.949 (4)Å between molecules B to B.