Literature DB >> 24454054

(1S,1'S,2'R,4a'S,9a'S,9b'R)-1'-Acet-yloxy-2,4'-dioxo-2',4',4a',7',8',9',9a',9b'-octa-hydro-1'H,2H-spiro-[ace-naphthyl-ene-1,5'-pyrano[4,3-a]pyrrolizin]-2'-ylmethyl acetate.

S Santhiya1, J Naga Siva Rao2, R Raghunathan2, N Latha1, S Lakshmi1.   

Abstract

In the title compound C26H25NO7, the mean plane through the lactone-substituted ring of the pyrrolizidine moiety forms dihedral angles of 78.46 (6) and 58.28 (8)° with the ace-naphthyl-ene moiety and the sugar based-lactone ring, respectively. The sum of the angles at the the N atom of the pyrrolizidine ring (335.0°) is in accordance with sp (3) hybridization. Some atoms of the acetate group are disordered and were refined using a split model [occupancy ratio 0.673 (10):0.327 (10)].

Entities:  

Year:  2013        PMID: 24454054      PMCID: PMC3884278          DOI: 10.1107/S1600536813026111

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


Related literature

For the importance of pyrrolidine and pyrrolizidine compounds and background to this work, see: Boido et al. (1994 ▶); Cravotto et al. (2001 ▶); Gershbein (1975 ▶); Govind et al. (2003 ▶); Jellimann et al. (2000 ▶); Nishimura et al. (1985 ▶); Selvanayagam et al. (2004 ▶); Usha et al. (2005 ▶).

Experimental

Crystal data

C26H25NO7 M = 463.47 Tetragonal, a = 13.6792 (3) Å c = 24.9625 (13) Å V = 4671.0 (3) Å3 Z = 8 Mo Kα radiation μ = 0.10 mm−1 T = 295 K 0.30 × 0.30 × 0.25 mm

Data collection

Bruker Kappa APEXII CCD diffractometer Absorption correction: multi-scan (SADABS; Bruker, 2004 ▶) T min = 0.902, T max = 0.976 21173 measured reflections 4010 independent reflections 2923 reflections with I > 2σ(I) R int = 0.034

Refinement

R[F 2 > 2σ(F 2)] = 0.042 wR(F 2) = 0.104 S = 1.06 4010 reflections 367 parameters 138 restraints H-atom parameters constrained Δρmax = 0.24 e Å−3 Δρmin = −0.12 e Å−3 Data collection: APEX2 (Bruker, 2004 ▶); cell refinement: APEX2 and SAINT (Bruker, 2004 ▶); data reduction: SAINT and XPREP (Bruker, 2004 ▶); program(s) used to solve structure: SIR92 (Altomare et al., 1993 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012 ▶); software used to prepare material for publication: PLATON (Spek, 2009 ▶). Crystal structure: contains datablock(s) I, New_Global_Publ_Block. DOI: 10.1107/S1600536813026111/nc2316sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536813026111/nc2316Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C26H25NO7Dx = 1.318 Mg m3
Mr = 463.47Melting point: 481.15 K
Tetragonal, P43212Mo Kα radiation, λ = 0.71073 Å
Hall symbol: P4nw2abwCell parameters from 5405 reflections
a = 13.6792 (3) Åθ = 2.2–22.2°
c = 24.9625 (13) ŵ = 0.10 mm1
V = 4671.0 (3) Å3T = 295 K
Z = 8Block, yellow
F(000) = 19520.30 × 0.30 × 0.25 mm
Bruker Kappa APEXII CCD diffractometer4010 independent reflections
Radiation source: fine-focus sealed tube2923 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.034
ω and φ scanθmax = 25.1°, θmin = 2.1°
Absorption correction: multi-scan (SADABS; Bruker, 2004)h = −16→16
Tmin = 0.902, Tmax = 0.976k = −11→16
21173 measured reflectionsl = −27→28
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.042H-atom parameters constrained
wR(F2) = 0.104w = 1/[σ2(Fo2) + (0.0494P)2 + 0.438P] where P = (Fo2 + 2Fc2)/3
S = 1.06(Δ/σ)max < 0.001
4010 reflectionsΔρmax = 0.24 e Å3
367 parametersΔρmin = −0.12 e Å3
138 restraintsExtinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.0038 (5)
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.
xyzUiso*/UeqOcc. (<1)
C10.49450 (18)0.37963 (17)0.34572 (10)0.0529 (6)
C20.52973 (19)0.38194 (18)0.40078 (10)0.0567 (7)
C30.5995 (2)0.4377 (2)0.42606 (12)0.0727 (8)
H30.63770.48230.40730.087*
C40.6103 (2)0.4243 (3)0.48143 (14)0.0894 (10)
H40.65740.46090.49940.107*
C50.5552 (3)0.3604 (3)0.51006 (13)0.0843 (9)
H50.56490.35510.54680.101*
C60.4840 (2)0.3023 (2)0.48530 (10)0.0650 (7)
C70.4197 (2)0.2338 (2)0.50876 (12)0.0785 (9)
H70.42150.22330.54560.094*
C80.3560 (2)0.1837 (2)0.47842 (11)0.0763 (8)
H80.31570.13800.49490.092*
C90.3474 (2)0.19735 (19)0.42248 (11)0.0660 (7)
H90.30170.16210.40280.079*
C100.40725 (18)0.26315 (17)0.39801 (9)0.0522 (6)
C110.47403 (18)0.31481 (17)0.42968 (9)0.0538 (6)
C120.41909 (17)0.29582 (17)0.34043 (9)0.0508 (6)
C130.4556 (3)0.1226 (2)0.31434 (13)0.0898 (10)
H13A0.38750.10580.32010.108*
H13B0.49390.10070.34480.108*
C140.4941 (3)0.0793 (2)0.26195 (13)0.0945 (11)
H14A0.56500.07910.26120.113*
H14B0.47040.01310.25670.113*
C150.4528 (3)0.1477 (2)0.22047 (12)0.0893 (10)
H15A0.39200.12240.20610.107*
H15B0.49870.15680.19130.107*
C160.4355 (2)0.24436 (19)0.25035 (10)0.0639 (7)
H160.47630.29580.23460.077*
C170.33003 (19)0.28012 (19)0.25462 (9)0.0587 (7)
H170.28670.22300.25400.070*
C180.32353 (17)0.32766 (17)0.31052 (9)0.0505 (6)
H180.26860.29680.32920.061*
C190.30811 (17)0.43601 (18)0.31357 (10)0.0532 (6)
C200.34631 (19)0.44821 (18)0.21942 (9)0.0567 (6)
H200.41670.43710.22350.068*
C210.2963 (2)0.3508 (2)0.21183 (9)0.0607 (7)
H210.22520.35890.21350.073*
C220.33054 (19)0.5216 (2)0.17621 (10)0.0660 (7)
H22A0.35600.58470.18730.079*
H22B0.36460.50160.14390.079*
N10.46742 (16)0.22513 (15)0.30539 (8)0.0636 (6)
O10.51791 (14)0.43233 (14)0.30886 (7)0.0734 (6)
O20.30863 (12)0.49008 (12)0.26880 (6)0.0599 (4)
O30.29131 (15)0.47673 (14)0.35530 (7)0.0734 (5)
O50.22688 (12)0.52899 (14)0.16582 (7)0.0674 (5)
O40.32451 (17)0.31189 (15)0.16054 (7)0.0873 (7)
O60.2533 (3)0.5940 (6)0.08779 (18)0.108 (2)0.673 (10)
C230.1979 (6)0.5579 (7)0.1189 (2)0.066 (2)0.673 (10)
C240.0924 (7)0.5520 (13)0.1066 (6)0.082 (3)0.673 (10)
H24A0.08230.56350.06910.123*0.673 (10)
H24B0.05790.60050.12700.123*0.673 (10)
H24C0.06850.48820.11580.123*0.673 (10)
O6'0.2525 (6)0.5122 (12)0.0794 (3)0.101 (4)0.327 (10)
C23'0.1997 (12)0.5354 (18)0.1156 (4)0.073 (4)0.327 (10)
C24'0.0906 (13)0.540 (3)0.1196 (11)0.072 (5)0.327 (10)
H24D0.06250.48290.10390.109*0.327 (10)
H24E0.06740.59730.10090.109*0.327 (10)
H24F0.07180.54440.15660.109*0.327 (10)
O70.1627 (7)0.3021 (9)0.1393 (4)0.114 (3)0.673 (10)
C250.2479 (7)0.2915 (16)0.1279 (5)0.105 (3)0.673 (10)
C260.2787 (9)0.2525 (11)0.0740 (5)0.143 (4)0.673 (10)
H26A0.31580.19360.07870.215*0.673 (10)
H26B0.31820.30030.05600.215*0.673 (10)
H26C0.22170.23880.05280.215*0.673 (10)
O7'0.1851 (18)0.3144 (19)0.1230 (9)0.122 (5)0.327 (10)
C25'0.2665 (17)0.282 (3)0.1209 (12)0.112 (4)0.327 (10)
C26'0.3264 (19)0.2324 (18)0.0783 (9)0.119 (6)0.327 (10)
H26D0.29520.17240.06800.178*0.327 (10)
H26E0.39050.21860.09210.178*0.327 (10)
H26F0.33180.27450.04770.178*0.327 (10)
U11U22U33U12U13U23
C10.0599 (16)0.0540 (15)0.0449 (16)0.0000 (11)0.0005 (12)0.0049 (12)
C20.0620 (16)0.0603 (16)0.0476 (16)0.0012 (12)−0.0052 (13)−0.0022 (12)
C30.0722 (19)0.081 (2)0.065 (2)−0.0042 (15)−0.0190 (15)−0.0035 (15)
C40.093 (2)0.097 (3)0.078 (3)−0.0003 (19)−0.0338 (19)−0.0095 (19)
C50.104 (3)0.095 (2)0.0541 (19)0.026 (2)−0.0200 (18)−0.0050 (17)
C60.083 (2)0.0668 (17)0.0449 (17)0.0219 (14)−0.0037 (15)0.0061 (14)
C70.105 (2)0.084 (2)0.0463 (18)0.0269 (18)0.0066 (18)0.0209 (16)
C80.100 (2)0.0702 (19)0.059 (2)0.0063 (16)0.0176 (17)0.0228 (16)
C90.0806 (19)0.0600 (17)0.0573 (18)−0.0029 (13)0.0101 (14)0.0101 (13)
C100.0684 (16)0.0467 (14)0.0416 (15)0.0005 (11)0.0042 (12)0.0068 (11)
C110.0700 (16)0.0531 (14)0.0382 (15)0.0124 (12)0.0000 (12)0.0057 (11)
C120.0618 (15)0.0496 (14)0.0410 (15)−0.0057 (11)0.0025 (11)0.0001 (11)
C130.120 (3)0.066 (2)0.084 (2)0.0018 (17)0.0054 (19)−0.0087 (17)
C140.128 (3)0.0651 (19)0.091 (2)0.0087 (19)0.010 (2)−0.0184 (18)
C150.113 (3)0.082 (2)0.072 (2)0.0072 (19)0.0118 (18)−0.0235 (17)
C160.083 (2)0.0637 (17)0.0446 (17)−0.0005 (13)0.0097 (13)−0.0034 (12)
C170.0706 (17)0.0619 (16)0.0438 (16)−0.0159 (12)0.0010 (12)−0.0035 (12)
C180.0568 (15)0.0555 (15)0.0392 (15)−0.0135 (10)0.0036 (11)0.0000 (11)
C190.0559 (15)0.0629 (17)0.0409 (16)−0.0026 (11)−0.0021 (12)0.0011 (13)
C200.0592 (15)0.0716 (17)0.0392 (15)−0.0074 (12)0.0031 (11)0.0029 (12)
C210.0710 (17)0.0756 (18)0.0357 (15)−0.0145 (14)−0.0006 (12)−0.0027 (13)
C220.0589 (17)0.0831 (19)0.0559 (17)−0.0138 (13)−0.0011 (13)0.0119 (14)
N10.0864 (16)0.0562 (14)0.0481 (14)0.0016 (11)0.0048 (11)−0.0009 (10)
O10.0849 (13)0.0802 (13)0.0552 (12)−0.0292 (10)−0.0069 (10)0.0176 (10)
O20.0759 (12)0.0608 (11)0.0430 (10)−0.0020 (8)−0.0031 (8)0.0035 (8)
O30.1011 (14)0.0731 (12)0.0459 (11)0.0151 (10)0.0021 (9)−0.0077 (10)
O50.0635 (12)0.0933 (13)0.0453 (11)−0.0059 (9)−0.0001 (9)0.0081 (9)
O40.1211 (18)0.1029 (16)0.0377 (12)−0.0152 (13)−0.0072 (11)−0.0139 (11)
O60.092 (3)0.157 (5)0.075 (3)0.024 (3)0.018 (2)0.060 (3)
C230.075 (3)0.080 (5)0.042 (3)0.012 (3)0.002 (3)0.001 (2)
C240.082 (4)0.087 (5)0.076 (7)0.001 (3)−0.015 (4)0.002 (6)
O6'0.096 (5)0.158 (9)0.050 (4)0.004 (5)0.015 (4)0.012 (5)
C23'0.069 (6)0.101 (8)0.049 (6)−0.010 (5)0.000 (5)0.001 (5)
C24'0.083 (7)0.089 (10)0.046 (8)0.010 (7)−0.036 (6)−0.015 (8)
O70.144 (5)0.126 (4)0.072 (5)−0.050 (3)−0.041 (4)0.001 (4)
C250.165 (7)0.095 (6)0.054 (5)−0.022 (6)−0.024 (6)−0.010 (4)
C260.214 (10)0.159 (8)0.056 (5)0.001 (8)−0.032 (6)−0.027 (5)
O7'0.186 (12)0.110 (8)0.071 (10)−0.011 (9)−0.041 (8)−0.007 (7)
C25'0.179 (8)0.098 (7)0.058 (7)−0.028 (7)−0.022 (7)0.003 (6)
C26'0.210 (16)0.106 (9)0.040 (7)0.004 (11)−0.027 (10)−0.021 (6)
C1—O11.212 (3)C17—H170.9800
C1—C21.457 (3)C18—C191.499 (3)
C1—C121.548 (3)C18—H180.9800
C2—C31.375 (4)C19—O31.203 (3)
C2—C111.394 (3)C19—O21.340 (3)
C3—C41.402 (4)C20—O21.454 (3)
C3—H30.9300C20—C221.490 (3)
C4—C51.357 (5)C20—C211.509 (4)
C4—H40.9300C20—H200.9800
C5—C61.401 (4)C21—O41.439 (3)
C5—H50.9300C21—H210.9800
C6—C111.405 (3)C22—O51.445 (3)
C6—C71.412 (4)C22—H22A0.9700
C7—C81.343 (4)C22—H22B0.9700
C7—H70.9300O5—C231.299 (6)
C8—C91.414 (4)O5—C23'1.310 (9)
C8—H80.9300O4—C25'1.333 (10)
C9—C101.362 (3)O4—C251.356 (7)
C9—H90.9300O6—C231.192 (7)
C10—C111.400 (3)C23—C241.477 (7)
C10—C121.514 (3)C24—H24A0.9600
C12—N11.462 (3)C24—H24B0.9600
C12—C181.567 (3)C24—H24C0.9600
C13—N11.429 (4)O6'—C23'1.199 (9)
C13—C141.529 (4)C23'—C24'1.498 (10)
C13—H13A0.9700C24'—H24D0.9600
C13—H13B0.9700C24'—H24E0.9600
C14—C151.505 (4)C24'—H24F0.9600
C14—H14A0.9700O7—C251.210 (8)
C14—H14B0.9700C25—C261.508 (8)
C15—C161.537 (4)C26—H26A0.9600
C15—H15A0.9700C26—H26B0.9600
C15—H15B0.9700C26—H26C0.9600
C16—N11.465 (3)O7'—C25'1.199 (10)
C16—C171.527 (4)C25'—C26'1.504 (10)
C16—H160.9800C26'—H26D0.9600
C17—C211.513 (3)C26'—H26E0.9600
C17—C181.542 (3)C26'—H26F0.9600
O1—C1—C2128.0 (2)C16—C17—C18104.6 (2)
O1—C1—C12123.5 (2)C21—C17—H17108.3
C2—C1—C12108.5 (2)C16—C17—H17108.3
C3—C2—C11120.5 (2)C18—C17—H17108.3
C3—C2—C1132.4 (3)C19—C18—C17118.1 (2)
C11—C2—C1107.0 (2)C19—C18—C12111.59 (18)
C2—C3—C4116.9 (3)C17—C18—C12105.41 (19)
C2—C3—H3121.5C19—C18—H18107.1
C4—C3—H3121.5C17—C18—H18107.1
C5—C4—C3123.0 (3)C12—C18—H18107.1
C5—C4—H4118.5O3—C19—O2117.9 (2)
C3—C4—H4118.5O3—C19—C18121.9 (2)
C4—C5—C6121.3 (3)O2—C19—C18120.2 (2)
C4—C5—H5119.4O2—C20—C22107.3 (2)
C6—C5—H5119.4O2—C20—C21107.08 (18)
C5—C6—C11115.7 (3)C22—C20—C21116.0 (2)
C5—C6—C7128.8 (3)O2—C20—H20108.8
C11—C6—C7115.5 (3)C22—C20—H20108.8
C8—C7—C6120.6 (3)C21—C20—H20108.8
C8—C7—H7119.7O4—C21—C20108.5 (2)
C6—C7—H7119.7O4—C21—C17108.0 (2)
C7—C8—C9122.9 (3)C20—C21—C17109.7 (2)
C7—C8—H8118.5O4—C21—H21110.2
C9—C8—H8118.5C20—C21—H21110.2
C10—C9—C8118.7 (3)C17—C21—H21110.2
C10—C9—H9120.6O5—C22—C20108.6 (2)
C8—C9—H9120.6O5—C22—H22A110.0
C9—C10—C11118.2 (2)C20—C22—H22A110.0
C9—C10—C12133.3 (2)O5—C22—H22B110.0
C11—C10—C12108.51 (19)C20—C22—H22B110.0
C2—C11—C10113.4 (2)H22A—C22—H22B108.3
C2—C11—C6122.6 (2)C13—N1—C12120.3 (2)
C10—C11—C6124.0 (2)C13—N1—C16106.8 (2)
N1—C12—C10114.91 (19)C12—N1—C16107.92 (19)
N1—C12—C1103.87 (19)C19—O2—C20119.44 (19)
C10—C12—C1102.06 (19)C23—O5—C23'14.1 (14)
N1—C12—C18106.01 (17)C23—O5—C22118.9 (4)
C10—C12—C18116.43 (19)C23'—O5—C22117.1 (7)
C1—C12—C18113.00 (19)C25'—O4—C2514.2 (14)
N1—C13—C14102.0 (2)C25'—O4—C21127.9 (12)
N1—C13—H13A111.4C25—O4—C21113.8 (5)
C14—C13—H13A111.4O6—C23—O5121.3 (7)
N1—C13—H13B111.4O6—C23—C24120.6 (7)
C14—C13—H13B111.4O5—C23—C24117.9 (7)
H13A—C13—H13B109.2O6'—C23'—O5122.1 (12)
C15—C14—C13102.6 (3)O6'—C23'—C24'131.5 (16)
C15—C14—H14A111.2O5—C23'—C24'102.8 (13)
C13—C14—H14A111.2C23'—C24'—H24D109.5
C15—C14—H14B111.2C23'—C24'—H24E109.5
C13—C14—H14B111.2H24D—C24'—H24E109.5
H14A—C14—H14B109.2C23'—C24'—H24F109.5
C14—C15—C16105.0 (2)H24D—C24'—H24F109.5
C14—C15—H15A110.7H24E—C24'—H24F109.5
C16—C15—H15A110.7O7—C25—O4125.4 (8)
C14—C15—H15B110.7O7—C25—C26121.5 (8)
C16—C15—H15B110.7O4—C25—C26113.2 (8)
H15A—C15—H15B108.8O7'—C25'—O4114 (2)
N1—C16—C17105.9 (2)O7'—C25'—C26'134.7 (18)
N1—C16—C15104.8 (2)O4—C25'—C26'109.8 (16)
C17—C16—C15117.1 (2)C25'—C26'—H26D109.5
N1—C16—H16109.6C25'—C26'—H26E109.5
C17—C16—H16109.6H26D—C26'—H26E109.5
C15—C16—H16109.6C25'—C26'—H26F109.5
C21—C17—C16116.3 (2)H26D—C26'—H26F109.5
C21—C17—C18110.6 (2)H26E—C26'—H26F109.5
O1—C1—C2—C3−3.5 (5)N1—C12—C18—C17−6.9 (2)
C12—C1—C2—C3176.4 (3)C10—C12—C18—C17−136.1 (2)
O1—C1—C2—C11173.5 (3)C1—C12—C18—C17106.2 (2)
C12—C1—C2—C11−6.6 (3)C17—C18—C19—O3171.5 (2)
C11—C2—C3—C4−0.7 (4)C12—C18—C19—O3−66.2 (3)
C1—C2—C3—C4176.0 (3)C17—C18—C19—O2−5.7 (3)
C2—C3—C4—C5−0.5 (5)C12—C18—C19—O2116.7 (2)
C3—C4—C5—C60.8 (5)O2—C20—C21—O4174.2 (2)
C4—C5—C6—C110.1 (4)C22—C20—C21—O454.5 (3)
C4—C5—C6—C7−179.0 (3)O2—C20—C21—C17−67.9 (3)
C5—C6—C7—C8−179.5 (3)C22—C20—C21—C17172.3 (2)
C11—C6—C7—C81.5 (4)C16—C17—C21—O448.0 (3)
C6—C7—C8—C9−1.5 (5)C18—C17—C21—O4167.1 (2)
C7—C8—C9—C101.0 (4)C16—C17—C21—C20−70.2 (3)
C8—C9—C10—C11−0.5 (4)C18—C17—C21—C2049.0 (3)
C8—C9—C10—C12179.6 (3)O2—C20—C22—O5−69.4 (3)
C3—C2—C11—C10−179.3 (2)C21—C20—C22—O550.2 (3)
C1—C2—C11—C103.3 (3)C14—C13—N1—C12165.8 (2)
C3—C2—C11—C61.6 (4)C14—C13—N1—C1642.5 (3)
C1—C2—C11—C6−175.8 (2)C10—C12—N1—C1332.2 (3)
C9—C10—C11—C2−178.4 (2)C1—C12—N1—C13142.8 (3)
C12—C10—C11—C21.5 (3)C18—C12—N1—C13−97.9 (3)
C9—C10—C11—C60.7 (4)C10—C12—N1—C16154.9 (2)
C12—C10—C11—C6−179.4 (2)C1—C12—N1—C16−94.5 (2)
C5—C6—C11—C2−1.3 (4)C18—C12—N1—C1624.9 (2)
C7—C6—C11—C2177.9 (2)C17—C16—N1—C1397.3 (2)
C5—C6—C11—C10179.7 (3)C15—C16—N1—C13−27.0 (3)
C7—C6—C11—C10−1.1 (4)C17—C16—N1—C12−33.3 (2)
C9—C10—C12—N1−73.7 (4)C15—C16—N1—C12−157.7 (2)
C11—C10—C12—N1106.4 (2)O3—C19—O2—C20168.5 (2)
C9—C10—C12—C1174.6 (3)C18—C19—O2—C20−14.3 (3)
C11—C10—C12—C1−5.3 (3)C22—C20—O2—C19175.71 (19)
C9—C10—C12—C1851.1 (4)C21—C20—O2—C1950.5 (3)
C11—C10—C12—C18−128.8 (2)C20—C22—O5—C23−154.5 (5)
O1—C1—C12—N167.3 (3)C20—C22—O5—C23'−138.6 (12)
C2—C1—C12—N1−112.6 (2)C20—C21—O4—C25'−126 (3)
O1—C1—C12—C10−173.0 (2)C17—C21—O4—C25'115 (3)
C2—C1—C12—C107.2 (3)C20—C21—O4—C25−123.5 (11)
O1—C1—C12—C18−47.1 (3)C17—C21—O4—C25117.6 (11)
C2—C1—C12—C18133.0 (2)C23'—O5—C23—O6−99 (4)
N1—C13—C14—C15−41.0 (3)C22—O5—C23—O6−13.0 (10)
C13—C14—C15—C1624.4 (3)C23'—O5—C23—C2485 (5)
C14—C15—C16—N10.1 (3)C22—O5—C23—C24171.8 (9)
C14—C15—C16—C17−116.8 (3)C23—O5—C23'—O6'119 (6)
N1—C16—C17—C21149.9 (2)C22—O5—C23'—O6'18 (3)
C15—C16—C17—C21−93.8 (3)C23—O5—C23'—C24'−80 (4)
N1—C16—C17—C1827.6 (2)C22—O5—C23'—C24'179.3 (14)
C15—C16—C17—C18143.9 (2)C25'—O4—C25—O7171 (15)
C21—C17—C18—C19−12.9 (3)C21—O4—C25—O7−1 (3)
C16—C17—C18—C19113.0 (2)C25'—O4—C25—C26−9 (12)
C21—C17—C18—C12−138.4 (2)C21—O4—C25—C26178.9 (10)
C16—C17—C18—C12−12.4 (2)C25—O4—C25'—O7'12 (9)
N1—C12—C18—C19−136.3 (2)C21—O4—C25'—O7'20 (6)
C10—C12—C18—C1994.5 (2)C25—O4—C25'—C26'−180 (16)
C1—C12—C18—C19−23.2 (3)C21—O4—C25'—C26'−171.1 (14)
  6 in total

1.  A short history of SHELX.

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

2.  Azomethine ylide cycloaddition/reductive heterocyclization approach to oxindole alkaloids: asymmetric synthesis of (-)-horsfiline.

Authors:  G Cravotto; G B Giovenzana; T Pilati; M Sisti; G Palmisano
Journal:  J Org Chem       Date:  2001-12-14       Impact factor: 4.354

3.  Liver regeneration as influenced by the structure of aromatic and heterocyclic compounds.

Authors:  L L Gershbein
Journal:  Res Commun Chem Pathol Pharmacol       Date:  1975-07

4.  Synthesis of phenalene and acenaphthene derivatives as new conformationally restricted ligands for melatonin receptors.

Authors:  C Jellimann; M Mathé-Allainmat; J Andrieux; S Kloubert; J A Boutin; J P Nicolas; C Bennejean; P Delagrange; M Langlois
Journal:  J Med Chem       Date:  2000-11-02       Impact factor: 7.446

5.  N-[(N-halogenoacyl)imino]acenaphthene-quinoxalines as potential antitumoral agents.

Authors:  A Boido; I Vazzana; F Sparatore
Journal:  Farmaco       Date:  1994-02

6.  Structure validation in chemical crystallography.

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

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