Literature DB >> 24454256

(S)-(+)-cis-4'-Benzyl-oxypraziquantel.

Alberto Cedillo-Cruz1, María Isabel Aguilar1, Helgi Jung-Cook1.   

Abstract

The asymmetric unit of the title compound, C26H30N2O3 {systematic name (S)-(+)-2-[cis-4-(benz-yloxy)cyclo-hexa-ne-carb-on-yl]-1,2,3,6,7,11b-hexa-hydro-4H-pyrazino-[2,1-a]isoquin-olin-4-one}, consists of two independent mol-ecules in which the O= Camide group is syn to the N-C(C=Olactam) moiety, making dihedral angles of 2.0 (8) and 3.7 (8)°. The conformation of the 1,4-disubstituted cyclo-hexane ring is cis in each independent mol-ecule, with the carbonyl group occupying an equatorial position and the benz-yloxy group an axial position. In one mol-ecule, two C and one O atom of the benz-yloxy group are disordered over two sets of sites, with a refined occupancy ratio of 0.772 (8):0.228 (8). In the crystal, mol-ecules are linked by C-H⋯O inter-actions, forming ribbons parallel to the b-axis direction.

Entities:  

Year:  2013        PMID: 24454256      PMCID: PMC3885080          DOI: 10.1107/S1600536813031735

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


Related literature

For pyrazinoisoquinolone derivatives with anthelmintic activity, see: Staudt et al. (1992 ▶); Jung et al. (2008 ▶); Thétiot-Laurent et al. (2013 ▶); Duan et al. (2012 ▶); Patra et al. (2013 ▶); Wang et al. (2013 ▶); Meier & Blaschke (2001 ▶).

Experimental

Crystal data

C26H30N2O3 M = 418.52 Monoclinic, a = 15.007 (2) Å b = 10.3322 (8) Å c = 16.019 (2) Å β = 117.399 (13)° V = 2205.2 (5) Å3 Z = 4 Cu Kα radiation μ = 0.66 mm−1 T = 130 K 0.59 × 0.31 × 0.13 mm

Data collection

Oxford Diffraction Xcalibur (Atlas, Gemini) diffractometer Absorption correction: analytical [CrysAlis PRO (Agilent, 2011 ▶), based on expressions derived by Clark & Reid (1995 ▶)] T min = 0.937, T max = 0.979 8420 measured reflections 5852 independent reflections 3845 reflections with I > 2σ(I) R int = 0.057

Refinement

R[F 2 > 2σ(F 2)] = 0.052 wR(F 2) = 0.137 S = 1.03 5852 reflections 558 parameters 4 restraints H-atom parameters constrained Δρmax = 0.25 e Å−3 Δρmin = −0.23 e Å−3 Absolute structure: Flack parameter determined using 868 quotients [(I +)−(I −)]/[(I +)+(I −)] (Parsons et al., 2013 ▶) Absolute structure parameter: 0.4 (3) Data collection: CrysAlis PRO (Agilent, 2011 ▶); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS2013 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2008 ▶); molecular graphics: Mercury (Macrae et al., 2006 ▶) and ORTEP-3 for Windows (Farrugia, 2012 ▶); software used to prepare material for publication: WinGX (Farrugia, 2012 ▶) and publCIF (Westrip, 2010 ▶). Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S1600536813031735/rz5093sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536813031735/rz5093Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C26H30N2O3Dx = 1.261 Mg m3
Mr = 418.52Melting point = 405–408 K
Monoclinic, P21Cu Kα radiation, λ = 1.54184 Å
a = 15.007 (2) ÅCell parameters from 1613 reflections
b = 10.3322 (8) Åθ = 3.3–73.3°
c = 16.019 (2) ŵ = 0.66 mm1
β = 117.399 (13)°T = 130 K
V = 2205.2 (5) Å3Needle, colourless
Z = 40.59 × 0.31 × 0.13 mm
F(000) = 896
Oxford Diffraction Xcalibur (Atlas, Gemini) diffractometer5852 independent reflections
Radiation source: Enhance (Cu) X-ray Source3845 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.057
Detector resolution: 10.4685 pixels mm-1θmax = 68.3°, θmin = 5.5°
ω scansh = −17→18
Absorption correction: analytical [CrysAlis PRO (Agilent, 2011), based on expressions derived by Clark & Reid (1995)]k = −12→7
Tmin = 0.937, Tmax = 0.979l = −19→18
8420 measured reflections
Refinement on F2Hydrogen site location: inferred from neighbouring sites
Least-squares matrix: fullH-atom parameters constrained
R[F2 > 2σ(F2)] = 0.052w = 1/[σ2(Fo2) + (0.0462P)2 + 0.6847P] where P = (Fo2 + 2Fc2)/3
wR(F2) = 0.137(Δ/σ)max < 0.001
S = 1.03Δρmax = 0.25 e Å3
5852 reflectionsΔρmin = −0.23 e Å3
558 parametersExtinction correction: SHELXL2013 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
4 restraintsExtinction coefficient: 0.00115 (17)
Primary atom site location: structure-invariant direct methodsAbsolute structure: Flack parameter determined using 868 quotients [(I+)-(I-)]/[(I+)+(I-)] (Parsons et al., 2013)
Secondary atom site location: difference Fourier mapAbsolute structure parameter: 0.382 (265)
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 > 2σ(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*/UeqOcc. (<1)
O10.6375 (3)0.2009 (4)0.7391 (3)0.0452 (10)
O20.2778 (3)0.1973 (4)0.5624 (3)0.0489 (11)
N10.5909 (3)0.4128 (4)0.7198 (3)0.0346 (11)
N20.3976 (3)0.3440 (4)0.5860 (3)0.0350 (11)
C120.5135 (3)0.5133 (5)0.6799 (3)0.0289 (12)
H120.47920.52240.72030.035*
C130.3000 (4)0.3110 (5)0.5562 (4)0.0341 (13)
C160.0377 (4)0.4631 (6)0.4195 (4)0.0423 (15)
H16C−0.02940.42260.38630.051*
H16D0.04920.51390.37290.051*
C20.4924 (4)0.7477 (5)0.6361 (3)0.0331 (13)
H20.42260.73560.61540.040*
C190.2203 (4)0.4976 (5)0.5981 (4)0.0351 (13)
H19A0.20280.44240.63890.042*
H19B0.28800.53410.63690.042*
C90.5738 (4)0.2851 (6)0.6990 (4)0.0349 (13)
O30.0086 (3)0.4888 (4)0.5570 (3)0.0477 (11)
C10.5582 (4)0.6432 (5)0.6747 (3)0.0286 (12)
C110.4367 (4)0.4709 (5)0.5816 (4)0.0330 (12)
H11A0.38110.53430.55540.040*
H11B0.46870.46780.53960.040*
C100.4747 (4)0.2445 (5)0.6220 (4)0.0386 (14)
H10A0.48520.21160.56920.046*
H10B0.44940.17150.64520.046*
C140.2207 (4)0.4154 (5)0.5181 (4)0.0350 (13)
H140.23620.47340.47650.042*
C70.7334 (4)0.5547 (6)0.7575 (4)0.0434 (15)
H7A0.79460.59110.80990.052*
H7B0.75330.51230.71320.052*
C150.1172 (4)0.3573 (6)0.4602 (4)0.0396 (14)
H15C0.10080.29910.50030.048*
H15D0.11720.30510.40830.048*
C170.0396 (4)0.5545 (6)0.4957 (4)0.0409 (14)
H17−0.00720.62830.46480.049*
C60.6612 (4)0.6616 (5)0.7082 (3)0.0324 (13)
C22−0.2257 (4)0.3782 (7)0.5544 (4)0.0466 (16)
H22−0.27420.42680.50340.056*
C180.1439 (4)0.6076 (6)0.5572 (4)0.0421 (15)
H18A0.14320.65890.60910.051*
H18B0.16380.66560.51950.051*
C80.6880 (4)0.4558 (6)0.7955 (4)0.0444 (16)
H8A0.73380.38090.82080.053*
H8B0.67810.49410.84730.053*
C50.6944 (4)0.7833 (6)0.6972 (4)0.0432 (15)
H50.76380.79600.71650.052*
C21−0.1238 (4)0.3933 (6)0.5797 (4)0.0406 (14)
C30.5275 (4)0.8674 (5)0.6280 (3)0.0372 (14)
H30.48200.93720.60100.045*
C23−0.2566 (5)0.2938 (7)0.6023 (4)0.0524 (18)
H23−0.32620.28390.58380.063*
C20−0.0961 (4)0.4757 (7)0.5179 (5)0.0506 (16)
H20A−0.12240.43560.45490.061*
H20B−0.12710.56230.51040.061*
C26−0.0555 (4)0.3261 (6)0.6553 (4)0.0446 (15)
H260.01420.33720.67470.054*
C25−0.0867 (4)0.2407 (7)0.7045 (4)0.0514 (17)
H25−0.03800.19460.75690.062*
C40.6288 (4)0.8862 (6)0.6590 (4)0.0433 (15)
H40.65350.96910.65420.052*
C24−0.1862 (4)0.2229 (7)0.6780 (4)0.0547 (18)
H24−0.20720.16320.71060.066*
C15A0.0948 (4)0.3602 (6)−0.0635 (4)0.0425 (14)
H15A0.09770.3212−0.11870.051*
H15B0.07900.2905−0.03000.051*
C16A0.0117 (4)0.4614 (6)−0.0971 (4)0.0434 (15)
H16A0.02280.5251−0.13750.052*
H16B−0.05370.4187−0.13530.052*
N1A0.5699 (3)0.4053 (4)0.2033 (3)0.0333 (10)
O1A0.6124 (3)0.1921 (4)0.2158 (3)0.0442 (10)
N2A0.3746 (3)0.3446 (4)0.0686 (3)0.0354 (11)
C13A0.2762 (4)0.3121 (6)0.0364 (4)0.0389 (14)
C1A0.5421 (4)0.6375 (5)0.1644 (3)0.0313 (12)
O2A0.2541 (3)0.1984 (4)0.0393 (3)0.0564 (12)
C10A0.4491 (4)0.2433 (5)0.0997 (4)0.0392 (14)
H10C0.45830.21420.04530.047*
H10D0.42280.16880.12050.047*
C11A0.4143 (4)0.4725 (5)0.0676 (4)0.0350 (13)
H11C0.35940.53690.04570.042*
H11D0.44370.47350.02350.042*
C9A0.5500 (4)0.2787 (5)0.1779 (4)0.0357 (13)
C12A0.4943 (4)0.5080 (5)0.1658 (4)0.0316 (12)
H12A0.46150.51620.20750.038*
C14A0.1972 (4)0.4180 (6)0.0019 (4)0.0387 (13)
H14A0.21530.4826−0.03430.046*
C19A0.1934 (4)0.4876 (6)0.0849 (4)0.0428 (14)
H19C0.18090.42390.12440.051*
H19D0.25870.53000.12410.051*
C6A0.6451 (4)0.6533 (6)0.1976 (4)0.0359 (13)
C2A0.4790 (4)0.7449 (5)0.1282 (3)0.0356 (13)
H2A0.40870.73500.10580.043*
C5A0.6826 (4)0.7736 (6)0.1926 (4)0.0435 (15)
H5A0.75280.78370.21430.052*
C4A0.6206 (5)0.8790 (6)0.1570 (4)0.0500 (17)
H4A0.64780.96100.15440.060*
C8A0.6671 (4)0.4424 (6)0.2795 (4)0.0460 (16)
H8D0.71090.36530.30250.055*
H8C0.65810.47830.33250.055*
C7A0.7157 (4)0.5424 (6)0.2450 (4)0.0443 (15)
H7C0.77720.57570.29880.053*
H7D0.73550.50170.20010.053*
C18A0.1100 (5)0.5890 (6)0.0485 (4)0.0485 (16)
H18C0.10710.63130.10260.058*
H18D0.12610.65630.01350.058*
C21A−0.1020 (7)0.3739 (16)0.1231 (8)0.0531 (12)0.772 (8)
C17A0.0086 (5)0.5313 (6)−0.0152 (5)0.0531 (12)
H17A−0.04130.6033−0.04080.064*
C3A0.5177 (4)0.8653 (6)0.1249 (3)0.0398 (14)
H3A0.47440.93790.10080.048*
C26A−0.0429 (5)0.2988 (7)0.1947 (5)0.0605 (19)
H26A0.02690.31680.22720.073*
C23A−0.2459 (5)0.2612 (8)0.1121 (5)0.064 (2)
H23A−0.31630.24730.08290.077*
C24A−0.1851 (5)0.1881 (8)0.1876 (5)0.0590 (19)
H24A−0.21360.12480.21130.071*
C25A−0.0821 (5)0.2051 (7)0.2303 (5)0.0610 (19)
H25A−0.03940.15370.28270.073*
C22A−0.2069 (5)0.3544 (8)0.0777 (5)0.064 (2)
H22A−0.25110.41070.02960.076*
O3A−0.0272 (4)0.4294 (5)0.0256 (4)0.0387 (13)0.772 (8)
C20A−0.0532 (7)0.4814 (9)0.0929 (7)0.0531 (12)0.772 (8)
H20C−0.10060.55440.06540.064*0.772 (8)
H20D0.00750.51390.14790.064*0.772 (8)
O3B0.0059 (15)0.481 (2)0.0661 (14)0.0387 (13)0.228 (8)
C20B−0.106 (2)0.457 (3)0.0344 (19)0.0531 (12)0.228 (8)
H20E−0.13840.4129−0.02760.064*0.228 (8)
H20F−0.14220.53810.03090.064*0.228 (8)
C21B−0.1030 (16)0.369 (5)0.112 (3)0.0531 (12)0.228 (8)
U11U22U33U12U13U23
O10.049 (2)0.033 (2)0.063 (3)0.014 (2)0.034 (2)0.006 (2)
O20.043 (2)0.028 (2)0.069 (3)−0.0077 (19)0.020 (2)0.003 (2)
N10.041 (2)0.028 (3)0.032 (2)0.007 (2)0.0143 (19)−0.001 (2)
N20.036 (2)0.025 (3)0.046 (3)−0.002 (2)0.021 (2)0.003 (2)
C120.032 (3)0.027 (3)0.032 (3)0.008 (2)0.018 (2)0.006 (2)
C130.038 (3)0.032 (3)0.034 (3)−0.004 (3)0.018 (2)−0.003 (3)
C160.038 (3)0.047 (4)0.037 (3)−0.001 (3)0.014 (2)0.003 (3)
C20.036 (3)0.031 (3)0.033 (3)−0.002 (3)0.016 (2)−0.001 (3)
C190.035 (3)0.032 (3)0.037 (3)−0.001 (3)0.016 (2)0.000 (3)
C90.041 (3)0.032 (3)0.045 (3)0.008 (3)0.030 (3)0.009 (3)
O30.0348 (19)0.057 (3)0.049 (2)0.006 (2)0.0168 (18)0.010 (2)
C10.038 (3)0.024 (3)0.026 (3)0.005 (2)0.018 (2)0.003 (2)
C110.033 (3)0.030 (3)0.039 (3)0.004 (2)0.018 (2)0.004 (3)
C100.048 (3)0.023 (3)0.052 (4)0.005 (3)0.030 (3)0.001 (3)
C140.035 (3)0.031 (3)0.040 (3)−0.005 (3)0.018 (2)0.000 (3)
C70.036 (3)0.041 (4)0.044 (3)0.000 (3)0.011 (3)−0.008 (3)
C150.040 (3)0.035 (4)0.041 (3)−0.003 (3)0.016 (3)−0.001 (3)
C170.042 (3)0.039 (4)0.044 (3)0.009 (3)0.022 (3)0.014 (3)
C60.035 (3)0.032 (3)0.029 (3)−0.002 (3)0.013 (2)−0.007 (2)
C220.036 (3)0.065 (5)0.044 (3)0.007 (3)0.022 (3)−0.006 (3)
C180.048 (3)0.035 (4)0.042 (3)−0.002 (3)0.020 (3)−0.006 (3)
C80.039 (3)0.045 (4)0.035 (3)0.013 (3)0.005 (2)0.001 (3)
C50.041 (3)0.043 (4)0.048 (3)−0.011 (3)0.022 (3)−0.009 (3)
C210.034 (3)0.043 (4)0.045 (3)0.002 (3)0.018 (3)−0.006 (3)
C30.047 (3)0.029 (3)0.032 (3)−0.004 (3)0.016 (2)−0.001 (3)
C230.047 (4)0.077 (5)0.041 (3)−0.012 (3)0.027 (3)−0.011 (4)
C200.036 (3)0.048 (4)0.065 (4)0.004 (3)0.020 (3)0.012 (4)
C260.038 (3)0.043 (4)0.047 (3)−0.005 (3)0.015 (3)−0.004 (3)
C250.054 (4)0.049 (4)0.041 (3)−0.004 (3)0.013 (3)−0.008 (3)
C40.052 (4)0.037 (4)0.041 (3)−0.013 (3)0.022 (3)−0.008 (3)
C240.056 (4)0.067 (5)0.051 (4)−0.017 (4)0.033 (3)−0.012 (4)
C15A0.037 (3)0.040 (4)0.047 (3)−0.006 (3)0.017 (3)−0.002 (3)
C16A0.041 (3)0.040 (4)0.046 (3)0.000 (3)0.018 (3)0.012 (3)
N1A0.039 (2)0.024 (3)0.038 (2)0.004 (2)0.019 (2)0.005 (2)
O1A0.048 (2)0.028 (2)0.065 (3)0.008 (2)0.032 (2)0.008 (2)
N2A0.041 (3)0.021 (2)0.047 (3)0.002 (2)0.022 (2)0.003 (2)
C13A0.042 (3)0.033 (4)0.038 (3)−0.008 (3)0.016 (3)−0.002 (3)
C1A0.038 (3)0.033 (3)0.024 (3)−0.003 (3)0.016 (2)−0.001 (2)
O2A0.047 (2)0.031 (3)0.085 (3)−0.007 (2)0.025 (2)0.007 (2)
C10A0.050 (3)0.021 (3)0.050 (3)0.000 (3)0.025 (3)−0.001 (3)
C11A0.044 (3)0.027 (3)0.036 (3)−0.004 (3)0.020 (3)0.000 (3)
C9A0.047 (3)0.028 (3)0.044 (3)0.003 (3)0.031 (3)0.009 (3)
C12A0.043 (3)0.023 (3)0.036 (3)0.003 (3)0.025 (2)0.004 (2)
C14A0.042 (3)0.030 (3)0.042 (3)−0.003 (3)0.017 (3)0.001 (3)
C19A0.050 (3)0.038 (4)0.038 (3)0.000 (3)0.019 (3)0.000 (3)
C6A0.045 (3)0.032 (3)0.036 (3)−0.006 (3)0.023 (3)−0.004 (3)
C2A0.048 (3)0.030 (3)0.032 (3)−0.001 (3)0.021 (3)0.000 (3)
C5A0.048 (3)0.047 (4)0.034 (3)−0.016 (3)0.018 (3)−0.005 (3)
C4A0.070 (4)0.040 (4)0.039 (3)−0.024 (4)0.024 (3)−0.009 (3)
C8A0.047 (3)0.041 (4)0.044 (3)0.006 (3)0.016 (3)0.002 (3)
C7A0.038 (3)0.043 (4)0.052 (4)−0.004 (3)0.021 (3)−0.007 (3)
C18A0.072 (4)0.035 (4)0.039 (3)0.009 (3)0.026 (3)0.003 (3)
C21A0.063 (3)0.045 (3)0.066 (3)0.005 (2)0.042 (2)−0.002 (2)
C17A0.063 (3)0.045 (3)0.066 (3)0.005 (2)0.042 (2)−0.002 (2)
C3A0.063 (4)0.025 (3)0.034 (3)−0.004 (3)0.025 (3)−0.002 (3)
C26A0.051 (4)0.050 (5)0.080 (5)−0.010 (3)0.029 (4)−0.021 (4)
C23A0.049 (4)0.099 (6)0.048 (4)−0.012 (4)0.025 (3)−0.022 (4)
C24A0.062 (4)0.072 (5)0.055 (4)−0.027 (4)0.037 (4)−0.021 (4)
C25A0.063 (4)0.064 (5)0.052 (4)0.004 (4)0.022 (3)−0.008 (4)
C22A0.066 (4)0.075 (6)0.065 (4)0.020 (4)0.043 (4)0.006 (4)
O3A0.051 (3)0.030 (3)0.040 (3)−0.004 (3)0.025 (3)−0.009 (2)
C20A0.063 (3)0.045 (3)0.066 (3)0.005 (2)0.042 (2)−0.002 (2)
O3B0.051 (3)0.030 (3)0.040 (3)−0.004 (3)0.025 (3)−0.009 (2)
C20B0.063 (3)0.045 (3)0.066 (3)0.005 (2)0.042 (2)−0.002 (2)
C21B0.063 (3)0.045 (3)0.066 (3)0.005 (2)0.042 (2)−0.002 (2)
O1—C91.232 (6)C16A—C17A1.517 (8)
O2—C131.238 (6)C16A—H16A0.9900
N1—C91.356 (7)C16A—H16B0.9900
N1—C121.467 (6)N1A—C9A1.362 (7)
N1—C81.471 (6)N1A—C8A1.458 (7)
N2—C131.358 (6)N1A—C12A1.465 (6)
N2—C111.452 (7)O1A—C9A1.234 (6)
N2—C101.455 (6)N2A—C13A1.364 (7)
C12—C11.519 (7)N2A—C10A1.443 (7)
C12—C111.526 (7)N2A—C11A1.452 (6)
C12—H121.0000C13A—O2A1.227 (6)
C13—C141.512 (7)C13A—C14A1.518 (8)
C16—C151.526 (8)C1A—C6A1.394 (7)
C16—C171.533 (8)C1A—C2A1.400 (7)
C16—H16C0.9900C1A—C12A1.523 (7)
C16—H16D0.9900C10A—C9A1.499 (7)
C2—C31.374 (7)C10A—H10C0.9900
C2—C11.401 (7)C10A—H10D0.9900
C2—H20.9500C11A—C12A1.521 (7)
C19—C181.531 (7)C11A—H11C0.9900
C19—C141.540 (7)C11A—H11D0.9900
C19—H19A0.9900C12A—H12A1.0000
C19—H19B0.9900C14A—C19A1.535 (8)
C9—C101.489 (7)C14A—H14A1.0000
O3—C201.405 (6)C19A—C18A1.527 (8)
O3—C171.436 (6)C19A—H19C0.9900
C1—C61.396 (7)C19A—H19D0.9900
C11—H11A0.9900C6A—C5A1.382 (8)
C11—H11B0.9900C6A—C7A1.507 (8)
C10—H10A0.9900C2A—C3A1.385 (7)
C10—H10B0.9900C2A—H2A0.9500
C14—C151.519 (7)C5A—C4A1.375 (9)
C14—H141.0000C5A—H5A0.9500
C7—C61.494 (7)C4A—C3A1.392 (8)
C7—C81.504 (8)C4A—H4A0.9500
C7—H7A0.9900C8A—C7A1.509 (8)
C7—H7B0.9900C8A—H8D0.9900
C15—H15C0.9900C8A—H8C0.9900
C15—H15D0.9900C7A—H7C0.9900
C17—C181.517 (8)C7A—H7D0.9900
C17—H171.0000C18A—C17A1.511 (9)
C6—C51.392 (8)C18A—H18C0.9900
C22—C231.376 (8)C18A—H18D0.9900
C22—C211.398 (7)C21A—C26A1.330 (12)
C22—H220.9500C21A—C22A1.412 (12)
C18—H18A0.9900C21A—C20A1.526 (14)
C18—H18B0.9900C17A—O3B1.418 (19)
C8—H8A0.9900C17A—O3A1.466 (8)
C8—H8B0.9900C17A—H17A1.0000
C5—C41.386 (8)C3A—H3A0.9500
C5—H50.9500C26A—C25A1.384 (9)
C21—C261.363 (8)C26A—C21B1.410 (12)
C21—C201.502 (8)C26A—H26A0.9500
C3—C41.379 (7)C23A—C24A1.360 (10)
C3—H30.9500C23A—C22A1.367 (10)
C23—C241.394 (9)C23A—H23A0.9500
C23—H230.9500C24A—C25A1.383 (8)
C20—H20A0.9900C24A—H24A0.9500
C20—H20B0.9900C25A—H25A0.9500
C26—C251.400 (8)C22A—C21B1.40 (2)
C26—H260.9500C22A—H22A0.9500
C25—C241.364 (8)O3A—C20A1.411 (10)
C25—H250.9500C20A—H20C0.9900
C4—H40.9500C20A—H20D0.9900
C24—H240.9500O3B—C20B1.54 (3)
C15A—C16A1.523 (7)C20B—C21B1.523 (12)
C15A—C14A1.528 (7)C20B—H20E0.9900
C15A—H15A0.9900C20B—H20F0.9900
C15A—H15B0.9900
C9—N1—C12124.0 (4)C17A—C16A—H16A109.3
C9—N1—C8120.1 (4)C15A—C16A—H16A109.3
C12—N1—C8115.5 (4)C17A—C16A—H16B109.3
C13—N2—C11127.2 (4)C15A—C16A—H16B109.3
C13—N2—C10119.6 (5)H16A—C16A—H16B108.0
C11—N2—C10113.1 (4)C9A—N1A—C8A120.0 (5)
N1—C12—C1111.6 (4)C9A—N1A—C12A123.4 (4)
N1—C12—C11108.5 (4)C8A—N1A—C12A116.2 (4)
C1—C12—C11109.9 (4)C13A—N2A—C10A118.9 (5)
N1—C12—H12108.9C13A—N2A—C11A126.8 (5)
C1—C12—H12108.9C10A—N2A—C11A114.0 (4)
C11—C12—H12108.9O2A—C13A—N2A119.1 (5)
O2—C13—N2119.8 (5)O2A—C13A—C14A121.6 (5)
O2—C13—C14121.3 (5)N2A—C13A—C14A119.2 (5)
N2—C13—C14118.9 (5)C6A—C1A—C2A119.0 (5)
C15—C16—C17112.1 (4)C6A—C1A—C12A123.0 (5)
C15—C16—H16C109.2C2A—C1A—C12A118.0 (4)
C17—C16—H16C109.2N2A—C10A—C9A115.8 (5)
C15—C16—H16D109.2N2A—C10A—H10C108.3
C17—C16—H16D109.2C9A—C10A—H10C108.3
H16C—C16—H16D107.9N2A—C10A—H10D108.3
C3—C2—C1120.8 (5)C9A—C10A—H10D108.3
C3—C2—H2119.6H10C—C10A—H10D107.4
C1—C2—H2119.6N2A—C11A—C12A109.9 (4)
C18—C19—C14110.0 (4)N2A—C11A—H11C109.7
C18—C19—H19A109.7C12A—C11A—H11C109.7
C14—C19—H19A109.7N2A—C11A—H11D109.7
C18—C19—H19B109.7C12A—C11A—H11D109.7
C14—C19—H19B109.7H11C—C11A—H11D108.2
H19A—C19—H19B108.2O1A—C9A—N1A122.5 (5)
O1—C9—N1123.0 (5)O1A—C9A—C10A118.7 (5)
O1—C9—C10118.2 (5)N1A—C9A—C10A118.9 (5)
N1—C9—C10118.8 (5)N1A—C12A—C11A110.1 (4)
C20—O3—C17112.8 (4)N1A—C12A—C1A111.2 (4)
C6—C1—C2119.7 (5)C11A—C12A—C1A110.4 (4)
C6—C1—C12122.5 (5)N1A—C12A—H12A108.4
C2—C1—C12117.7 (4)C11A—C12A—H12A108.4
N2—C11—C12109.8 (4)C1A—C12A—H12A108.4
N2—C11—H11A109.7C13A—C14A—C15A109.8 (5)
C12—C11—H11A109.7C13A—C14A—C19A110.9 (5)
N2—C11—H11B109.7C15A—C14A—C19A110.5 (5)
C12—C11—H11B109.7C13A—C14A—H14A108.5
H11A—C11—H11B108.2C15A—C14A—H14A108.5
N2—C10—C9116.0 (5)C19A—C14A—H14A108.5
N2—C10—H10A108.3C18A—C19A—C14A110.0 (4)
C9—C10—H10A108.3C18A—C19A—H19C109.7
N2—C10—H10B108.3C14A—C19A—H19C109.7
C9—C10—H10B108.3C18A—C19A—H19D109.7
H10A—C10—H10B107.4C14A—C19A—H19D109.7
C13—C14—C15111.0 (5)H19C—C19A—H19D108.2
C13—C14—C19111.2 (4)C5A—C6A—C1A119.6 (6)
C15—C14—C19109.4 (4)C5A—C6A—C7A120.1 (5)
C13—C14—H14108.4C1A—C6A—C7A120.2 (5)
C15—C14—H14108.4C3A—C2A—C1A120.8 (5)
C19—C14—H14108.4C3A—C2A—H2A119.6
C6—C7—C8111.3 (5)C1A—C2A—H2A119.6
C6—C7—H7A109.4C4A—C5A—C6A121.3 (6)
C8—C7—H7A109.4C4A—C5A—H5A119.3
C6—C7—H7B109.4C6A—C5A—H5A119.3
C8—C7—H7B109.4C5A—C4A—C3A119.8 (6)
H7A—C7—H7B108.0C5A—C4A—H4A120.1
C14—C15—C16110.8 (5)C3A—C4A—H4A120.1
C14—C15—H15C109.5N1A—C8A—C7A109.8 (5)
C16—C15—H15C109.5N1A—C8A—H8D109.7
C14—C15—H15D109.5C7A—C8A—H8D109.7
C16—C15—H15D109.5N1A—C8A—H8C109.7
H15C—C15—H15D108.1C7A—C8A—H8C109.7
O3—C17—C18106.8 (4)H8D—C8A—H8C108.2
O3—C17—C16111.1 (5)C6A—C7A—C8A111.0 (5)
C18—C17—C16112.1 (5)C6A—C7A—H7C109.4
O3—C17—H17108.9C8A—C7A—H7C109.4
C18—C17—H17108.9C6A—C7A—H7D109.4
C16—C17—H17108.9C8A—C7A—H7D109.4
C5—C6—C1118.1 (5)H7C—C7A—H7D108.0
C5—C6—C7121.3 (5)C17A—C18A—C19A112.4 (5)
C1—C6—C7120.5 (5)C17A—C18A—H18C109.1
C23—C22—C21120.9 (6)C19A—C18A—H18C109.1
C23—C22—H22119.6C17A—C18A—H18D109.1
C21—C22—H22119.6C19A—C18A—H18D109.1
C17—C18—C19110.8 (5)H18C—C18A—H18D107.9
C17—C18—H18A109.5C26A—C21A—C22A120.2 (10)
C19—C18—H18A109.5C26A—C21A—C20A118.1 (9)
C17—C18—H18B109.5C22A—C21A—C20A121.7 (8)
C19—C18—H18B109.5O3B—C17A—C18A88.3 (9)
H18A—C18—H18B108.1O3A—C17A—C18A116.4 (5)
N1—C8—C7109.4 (5)O3B—C17A—C16A130.2 (10)
N1—C8—H8A109.8O3A—C17A—C16A101.9 (5)
C7—C8—H8A109.8C18A—C17A—C16A110.4 (5)
N1—C8—H8B109.8O3B—C17A—H17A108.4
C7—C8—H8B109.8C18A—C17A—H17A108.4
H8A—C8—H8B108.2C16A—C17A—H17A108.4
C4—C5—C6121.7 (5)C2A—C3A—C4A119.4 (6)
C4—C5—H5119.1C2A—C3A—H3A120.3
C6—C5—H5119.1C4A—C3A—H3A120.3
C26—C21—C22118.5 (6)C21A—C26A—C25A121.5 (8)
C26—C21—C20123.4 (5)C25A—C26A—C21B122.4 (13)
C22—C21—C20118.0 (5)C25A—C26A—H26A118.8
C2—C3—C4120.0 (5)C21B—C26A—H26A118.8
C2—C3—H3120.0C24A—C23A—C22A120.9 (6)
C4—C3—H3120.0C24A—C23A—H23A119.6
C22—C23—C24120.2 (6)C22A—C23A—H23A119.6
C22—C23—H23119.9C23A—C24A—C25A120.5 (7)
C24—C23—H23119.9C23A—C24A—H24A119.7
O3—C20—C21110.6 (5)C25A—C24A—H24A119.7
O3—C20—H20A109.5C24A—C25A—C26A118.4 (7)
C21—C20—H20A109.5C24A—C25A—H25A120.8
O3—C20—H20B109.5C26A—C25A—H25A120.8
C21—C20—H20B109.5C23A—C22A—C21B121.4 (11)
H20A—C20—H20B108.1C23A—C22A—C21A118.4 (7)
C21—C26—C25120.7 (6)C23A—C22A—H22A119.3
C21—C26—H26119.6C21B—C22A—H22A119.3
C25—C26—H26119.6C20A—O3A—C17A110.8 (6)
C24—C25—C26120.8 (6)O3A—C20A—C21A107.9 (9)
C24—C25—H25119.6O3A—C20A—H20C110.1
C26—C25—H25119.6C21A—C20A—H20C110.1
C3—C4—C5119.5 (5)O3A—C20A—H20D110.1
C3—C4—H4120.3C21A—C20A—H20D110.1
C5—C4—H4120.3H20C—C20A—H20D108.4
C25—C24—C23118.9 (6)C17A—O3B—C20B104.2 (15)
C25—C24—H24120.6O3B—C20B—C21B102 (2)
C23—C24—H24120.6O3B—C20B—H20E111.3
C16A—C15A—C14A112.1 (5)C21B—C20B—H20E111.3
C16A—C15A—H15A109.2O3B—C20B—H20F111.3
C14A—C15A—H15A109.2C21B—C20B—H20F111.3
C16A—C15A—H15B109.2H20E—C20B—H20F109.2
C14A—C15A—H15B109.2C22A—C21B—C26A115.4 (16)
H15A—C15A—H15B107.9C22A—C21B—C20B97.6 (14)
C17A—C16A—C15A111.6 (5)C26A—C21B—C20B147 (2)
C9—N1—C12—C1−151.7 (5)C12A—N1A—C9A—C10A7.3 (8)
C8—N1—C12—C136.5 (6)N2A—C10A—C9A—O1A170.6 (5)
C9—N1—C12—C11−30.5 (7)N2A—C10A—C9A—N1A−10.6 (8)
C8—N1—C12—C11157.7 (4)C9A—N1A—C12A—C11A−28.3 (7)
C11—N2—C13—O2178.1 (5)C8A—N1A—C12A—C11A159.1 (5)
C10—N2—C13—O22.0 (8)C9A—N1A—C12A—C1A−151.0 (5)
C11—N2—C13—C14−3.3 (8)C8A—N1A—C12A—C1A36.4 (6)
C10—N2—C13—C14−179.4 (5)N2A—C11A—C12A—N1A52.6 (5)
C12—N1—C9—O1−173.6 (5)N2A—C11A—C12A—C1A175.8 (4)
C8—N1—C9—O1−2.2 (9)C6A—C1A—C12A—N1A−1.7 (7)
C12—N1—C9—C108.5 (8)C2A—C1A—C12A—N1A178.5 (4)
C8—N1—C9—C10179.9 (5)C6A—C1A—C12A—C11A−124.2 (5)
C3—C2—C1—C62.1 (8)C2A—C1A—C12A—C11A56.0 (6)
C3—C2—C1—C12−179.0 (5)O2A—C13A—C14A—C15A−24.5 (8)
N1—C12—C1—C6−2.5 (7)N2A—C13A—C14A—C15A158.3 (5)
C11—C12—C1—C6−122.8 (5)O2A—C13A—C14A—C19A97.9 (7)
N1—C12—C1—C2178.7 (4)N2A—C13A—C14A—C19A−79.2 (7)
C11—C12—C1—C258.4 (6)C16A—C15A—C14A—C13A177.6 (5)
C13—N2—C11—C12123.1 (5)C16A—C15A—C14A—C19A55.0 (7)
C10—N2—C11—C12−60.6 (6)C13A—C14A—C19A—C18A−177.2 (5)
N1—C12—C11—N255.0 (5)C15A—C14A—C19A—C18A−55.2 (7)
C1—C12—C11—N2177.3 (4)C2A—C1A—C6A—C5A−1.2 (8)
C13—N2—C10—C9−146.1 (5)C12A—C1A—C6A—C5A179.0 (5)
C11—N2—C10—C937.3 (7)C2A—C1A—C6A—C7A174.3 (5)
O1—C9—C10—N2171.7 (5)C12A—C1A—C6A—C7A−5.5 (8)
N1—C9—C10—N2−10.4 (7)C6A—C1A—C2A—C3A0.3 (8)
O2—C13—C14—C15−20.1 (7)C12A—C1A—C2A—C3A−179.9 (5)
N2—C13—C14—C15161.4 (5)C1A—C6A—C5A—C4A1.1 (9)
O2—C13—C14—C19101.9 (6)C7A—C6A—C5A—C4A−174.4 (5)
N2—C13—C14—C19−76.7 (6)C6A—C5A—C4A—C3A−0.2 (9)
C18—C19—C14—C13176.5 (4)C9A—N1A—C8A—C7A124.0 (5)
C18—C19—C14—C15−60.6 (6)C12A—N1A—C8A—C7A−63.2 (6)
C13—C14—C15—C16−178.4 (4)C5A—C6A—C7A—C8A155.6 (5)
C19—C14—C15—C1658.6 (6)C1A—C6A—C7A—C8A−19.8 (7)
C17—C16—C15—C14−54.5 (6)N1A—C8A—C7A—C6A51.7 (6)
C20—O3—C17—C18158.3 (5)C14A—C19A—C18A—C17A57.1 (7)
C20—O3—C17—C16−79.2 (6)C19A—C18A—C17A—O3B76.0 (9)
C15—C16—C17—O3−67.5 (6)C19A—C18A—C17A—O3A58.9 (7)
C15—C16—C17—C1851.9 (7)C19A—C18A—C17A—C16A−56.7 (7)
C2—C1—C6—C5−3.4 (8)C15A—C16A—C17A—O3B−51.0 (13)
C12—C1—C6—C5177.8 (5)C15A—C16A—C17A—O3A−69.6 (6)
C2—C1—C6—C7174.3 (5)C15A—C16A—C17A—C18A54.8 (7)
C12—C1—C6—C7−4.5 (8)C1A—C2A—C3A—C4A0.6 (8)
C8—C7—C6—C5156.6 (5)C5A—C4A—C3A—C2A−0.7 (8)
C8—C7—C6—C1−21.0 (7)C22A—C21A—C26A—C25A−3.8 (19)
O3—C17—C18—C1968.3 (6)C20A—C21A—C26A—C25A175.5 (9)
C16—C17—C18—C19−53.6 (6)C22A—C21A—C26A—C21B96 (15)
C14—C19—C18—C1758.2 (6)C20A—C21A—C26A—C21B−85 (14)
C9—N1—C8—C7124.8 (5)C22A—C23A—C24A—C25A−1.1 (11)
C12—N1—C8—C7−63.1 (6)C23A—C24A—C25A—C26A0.6 (10)
C6—C7—C8—N152.4 (6)C21A—C26A—C25A—C24A1.9 (13)
C1—C6—C5—C43.5 (8)C21B—C26A—C25A—C24A−6 (3)
C7—C6—C5—C4−174.2 (5)C24A—C23A—C22A—C21B7 (3)
C23—C22—C21—C26−2.3 (9)C24A—C23A—C22A—C21A−0.6 (13)
C23—C22—C21—C20173.4 (6)C26A—C21A—C22A—C23A3.1 (19)
C1—C2—C3—C4−0.8 (8)C20A—C21A—C22A—C23A−176.2 (10)
C21—C22—C23—C240.7 (10)C26A—C21A—C22A—C21B−113 (17)
C17—O3—C20—C21173.5 (5)C20A—C21A—C22A—C21B68 (15)
C26—C21—C20—O3−9.0 (9)O3B—C17A—O3A—C20A37.7 (15)
C22—C21—C20—O3175.5 (5)C18A—C17A—O3A—C20A70.7 (8)
C22—C21—C26—C252.0 (9)C16A—C17A—O3A—C20A−169.1 (6)
C20—C21—C26—C25−173.4 (6)C17A—O3A—C20A—C21A172.9 (6)
C21—C26—C25—C240.0 (9)C26A—C21A—C20A—O3A88.9 (14)
C2—C3—C4—C50.8 (8)C22A—C21A—C20A—O3A−91.8 (14)
C6—C5—C4—C3−2.2 (9)O3A—C17A—O3B—C20B−50.1 (17)
C26—C25—C24—C23−1.6 (10)C18A—C17A—O3B—C20B159.1 (16)
C22—C23—C24—C251.3 (10)C16A—C17A—O3B—C20B−85.4 (18)
C14A—C15A—C16A—C17A−54.9 (7)C17A—O3B—C20B—C21B164 (3)
C10A—N2A—C13A—O2A3.7 (8)C23A—C22A—C21B—C26A−12 (6)
C11A—N2A—C13A—O2A177.6 (5)C21A—C22A—C21B—C26A56 (12)
C10A—N2A—C13A—C14A−179.0 (5)C23A—C22A—C21B—C20B166.3 (18)
C11A—N2A—C13A—C14A−5.1 (8)C21A—C22A—C21B—C20B−126 (19)
C13A—N2A—C10A—C9A−147.8 (5)C21A—C26A—C21B—C22A−73 (12)
C11A—N2A—C10A—C9A37.5 (7)C25A—C26A—C21B—C22A11 (6)
C13A—N2A—C11A—C12A126.6 (5)C21A—C26A—C21B—C20B110 (21)
C10A—N2A—C11A—C12A−59.2 (6)C25A—C26A—C21B—C20B−165 (7)
C8A—N1A—C9A—O1A−1.6 (8)O3B—C20B—C21B—C22A179 (3)
C12A—N1A—C9A—O1A−173.9 (5)O3B—C20B—C21B—C26A−4 (10)
C8A—N1A—C9A—C10A179.6 (5)
D—H···AD—HH···AD···AD—H···A
C20—H20B···O2i0.992.453.332 (7)149
C20A—H20C···O2Aii0.992.603.567 (10)165
C20B—H20F···O2Aii0.992.263.19 (3)156
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯A D—HH⋯A DA D—H⋯A
C20—H20B⋯O2i 0.992.453.332 (7)149
C20A—H20C⋯O2A ii 0.992.603.567 (10)165
C20B—H20F⋯O2A ii 0.992.263.19 (3)156

Symmetry codes: (i) ; (ii) .

  9 in total

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

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Journal:  Chemistry       Date:  2013-01-07       Impact factor: 5.236

3.  Praziquantel derivatives exhibit activity against both juvenile and adult Schistosoma japonicum.

Authors:  Wen-wen Duan; Si-jie Qiu; Yue Zhao; Huan Sun; Chunhua Qiao; Chao-ming Xia
Journal:  Bioorg Med Chem Lett       Date:  2012-01-04       Impact factor: 2.823

4.  Investigation of praziquantel metabolism in isolated rat hepatocytes.

Authors:  H Meier; G Blaschke
Journal:  J Pharm Biomed Anal       Date:  2001-10       Impact factor: 3.935

Review 5.  Schistosomiasis chemotherapy.

Authors:  Sophie A-L Thétiot-Laurent; Jérôme Boissier; Anne Robert; Bernard Meunier
Journal:  Angew Chem Int Ed Engl       Date:  2013-06-27       Impact factor: 15.336

6.  Light and scanning electron microscopy studies on the effects of the enantiomers of praziquantel and its main metabolite on Schistosoma mansoni in vitro.

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Review 7.  Medical treatment for neurocysticercosis: drugs, indications and perspectives.

Authors:  Helgi Jung; Graciela Cárdenas; Edda Sciutto; Agnes Fleury
Journal:  Curr Top Med Chem       Date:  2008       Impact factor: 3.295

8.  Use of intensity quotients and differences in absolute structure refinement.

Authors:  Simon Parsons; Howard D Flack; Trixie Wagner
Journal:  Acta Crystallogr B Struct Sci Cryst Eng Mater       Date:  2013-05-17

9.  Synthesis and SAR studies of praziquantel derivatives with activity against Schistosoma japonicum.

Authors:  Wen-Long Wang; Li-Jun Song; Xia Chen; Xu-Ren Yin; Wen-Hua Fan; Gu-Ping Wang; Chuan-Xin Yu; Bainian Feng
Journal:  Molecules       Date:  2013-07-31       Impact factor: 4.411

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