Literature DB >> 22064935

1'-Methyl-4'-phenyldispiro-[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Ang Chee Wei, Mohamed Ashraf Ali, Tan Soo Choon, Ching Kheng Quah, Hoong-Kun Fun.   

Abstract

The conformation of the title compound, C(27)H(21)NO(3), is stabilized by a weak intra-molecular C-H⋯O hydrogen bond, which generates an S(6) ring motif. The pyrrolidine ring adopts a half-chair conformation. Both of the other five-membered rings are in envelope conformations. No significant inter-molecular hydrogen bonds are observed.

Entities:  

Year:  2011        PMID: 22064935      PMCID: PMC3200932          DOI: 10.1107/S1600536811032934

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


Related literature

For general background to and the biological activity of the title compound, see: Amalraj et al. (2003 ▶); Karthikeyan et al. (2010 ▶); Chande et al. (2005 ▶); Sriram et al. (2009 ▶); Duncan & Barry (2004 ▶). For reference bond-length data, see: Allen et al. (1987 ▶). For related structures, see: Kumar et al. (2010 ▶); Wei et al. (2011 ▶). For hydrogen-bond motifs, see: Bernstein et al. (1995 ▶). For ring conformations, see: Cremer & Pople (1975 ▶).

Experimental

Crystal data

C27H21NO3 M = 407.45 Monoclinic, a = 8.4578 (7) Å b = 11.6194 (9) Å c = 22.6360 (16) Å β = 109.693 (2)° V = 2094.4 (3) Å3 Z = 4 Mo Kα radiation μ = 0.08 mm−1 T = 296 K 0.34 × 0.26 × 0.15 mm

Data collection

Bruker SMART APEXII DUO CCD area-detector diffractometer Absorption correction: multi-scan (SADABS; Bruker, 2009 ▶) T min = 0.972, T max = 0.988 23854 measured reflections 6084 independent reflections 3982 reflections with I > 2σ(I) R int = 0.035

Refinement

R[F 2 > 2σ(F 2)] = 0.052 wR(F 2) = 0.163 S = 1.03 6084 reflections 281 parameters H-atom parameters constrained Δρmax = 0.20 e Å−3 Δρmin = −0.21 e Å−3 Data collection: APEX2 (Bruker, 2009 ▶); cell refinement: SAINT (Bruker, 2009 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009 ▶). Crystal structure: contains datablock(s) global, I. DOI: 10.1107/S1600536811032934/wn2448sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536811032934/wn2448Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C27H21NO3F(000) = 856
Mr = 407.45Dx = 1.292 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybcCell parameters from 5963 reflections
a = 8.4578 (7) Åθ = 2.6–28.2°
b = 11.6194 (9) ŵ = 0.08 mm1
c = 22.6360 (16) ÅT = 296 K
β = 109.693 (2)°Block, yellow
V = 2094.4 (3) Å30.34 × 0.26 × 0.15 mm
Z = 4
Bruker SMART APEXII DUO CCD area-detector diffractometer6084 independent reflections
Radiation source: fine-focus sealed tube3982 reflections with I > 2σ(I)
graphiteRint = 0.035
φ and ω scansθmax = 30.1°, θmin = 1.9°
Absorption correction: multi-scan (SADABS; Bruker, 2009)h = −11→11
Tmin = 0.972, Tmax = 0.988k = −15→16
23854 measured reflectionsl = −31→31
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.052Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.163H-atom parameters constrained
S = 1.03w = 1/[σ2(Fo2) + (0.0731P)2 + 0.4081P] where P = (Fo2 + 2Fc2)/3
6084 reflections(Δ/σ)max = 0.001
281 parametersΔρmax = 0.20 e Å3
0 restraintsΔρmin = −0.21 e Å3
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > 2sigma(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.
xyzUiso*/Ueq
O11.34827 (16)0.31094 (11)0.95641 (6)0.0717 (4)
O21.00814 (19)0.39487 (11)0.75292 (5)0.0679 (4)
O30.98637 (17)0.36481 (11)0.97255 (5)0.0622 (3)
N11.15973 (17)0.19994 (11)0.83324 (7)0.0517 (3)
C10.7927 (4)0.0968 (2)0.94738 (12)0.0926 (8)
H1A0.80540.16960.96540.111*
C20.6731 (4)0.0227 (2)0.95567 (14)0.1032 (9)
H2A0.60470.04760.97780.124*
C30.6549 (3)−0.0845 (2)0.93209 (12)0.0863 (7)
H3A0.5778−0.13520.93900.104*
C40.7512 (4)−0.1166 (2)0.89819 (17)0.1153 (10)
H4A0.7393−0.19020.88120.138*
C50.8678 (3)−0.04216 (18)0.88813 (14)0.0938 (8)
H5A0.9306−0.06610.86370.113*
C60.89185 (19)0.06577 (13)0.91353 (7)0.0457 (3)
C71.02348 (18)0.14830 (12)0.90680 (7)0.0415 (3)
H7A1.09760.16680.94940.050*
C81.1369 (2)0.10356 (15)0.87084 (10)0.0607 (5)
H8A1.24420.07830.89990.073*
H8B1.08390.03940.84410.073*
C91.3153 (3)0.2003 (2)0.81922 (12)0.0852 (7)
H9A1.31270.26180.79060.128*
H9B1.32750.12820.80050.128*
H9C1.40840.21120.85730.128*
C101.11262 (17)0.30515 (12)0.85686 (7)0.0414 (3)
C111.24588 (18)0.36203 (13)0.91420 (7)0.0466 (3)
C121.22771 (17)0.48842 (13)0.90556 (7)0.0424 (3)
C131.2992 (2)0.57672 (14)0.94769 (8)0.0504 (4)
H13A1.36710.56080.98860.060*
C141.2661 (2)0.68821 (15)0.92684 (9)0.0575 (4)
H14A1.31260.74850.95420.069*
C151.1648 (2)0.71263 (15)0.86571 (9)0.0599 (4)
H15A1.14530.78890.85290.072*
C161.0922 (2)0.62575 (14)0.82347 (8)0.0523 (4)
H16A1.02390.64220.78260.063*
C171.12528 (18)0.51301 (13)0.84439 (7)0.0428 (3)
C181.07040 (19)0.40499 (14)0.80921 (7)0.0461 (3)
C190.95609 (16)0.26431 (12)0.87430 (6)0.0378 (3)
C200.91217 (19)0.35346 (12)0.91692 (7)0.0428 (3)
C210.76765 (19)0.42024 (13)0.87730 (8)0.0477 (4)
C220.7002 (3)0.52158 (15)0.89235 (11)0.0663 (5)
H22A0.74610.55590.93160.080*
C230.5639 (3)0.5683 (2)0.84708 (15)0.0856 (7)
H23A0.51550.63540.85550.103*
C240.4974 (3)0.5161 (2)0.78866 (14)0.0898 (8)
H24A0.40440.54910.75880.108*
C250.5656 (2)0.41625 (19)0.77349 (10)0.0710 (6)
H25A0.52060.38290.73400.085*
C260.70320 (18)0.36772 (13)0.81919 (8)0.0477 (4)
C270.79686 (18)0.25889 (13)0.81565 (7)0.0456 (3)
H27A0.82560.25710.77760.055*
H27B0.73040.19140.81670.055*
U11U22U33U12U13U23
O10.0569 (7)0.0572 (7)0.0736 (8)−0.0085 (6)−0.0143 (6)0.0166 (6)
O20.0945 (10)0.0639 (8)0.0383 (6)−0.0176 (7)0.0131 (6)0.0000 (5)
O30.0805 (8)0.0580 (7)0.0440 (7)−0.0050 (6)0.0155 (6)−0.0125 (5)
N10.0550 (7)0.0446 (7)0.0638 (9)−0.0008 (6)0.0309 (7)−0.0027 (6)
C10.128 (2)0.0670 (13)0.119 (2)−0.0339 (13)0.0878 (18)−0.0193 (13)
C20.122 (2)0.0954 (19)0.125 (2)−0.0344 (16)0.0859 (18)−0.0022 (16)
C30.0723 (13)0.0836 (16)0.0965 (17)−0.0276 (12)0.0200 (12)0.0272 (13)
C40.119 (2)0.0597 (14)0.181 (3)−0.0419 (14)0.069 (2)−0.0216 (17)
C50.0971 (16)0.0507 (11)0.155 (2)−0.0228 (11)0.0698 (17)−0.0251 (13)
C60.0477 (7)0.0391 (7)0.0461 (8)−0.0035 (6)0.0103 (6)0.0053 (6)
C70.0449 (7)0.0352 (7)0.0431 (8)−0.0017 (5)0.0130 (6)0.0005 (6)
C80.0684 (11)0.0437 (9)0.0810 (13)0.0068 (8)0.0396 (10)0.0044 (8)
C90.0804 (14)0.0779 (14)0.122 (2)0.0045 (11)0.0670 (14)0.0036 (13)
C100.0420 (7)0.0378 (7)0.0428 (8)−0.0054 (5)0.0120 (6)−0.0010 (6)
C110.0398 (7)0.0463 (8)0.0475 (8)−0.0071 (6)0.0064 (6)0.0056 (7)
C120.0391 (6)0.0417 (7)0.0457 (8)−0.0060 (6)0.0131 (6)0.0017 (6)
C130.0497 (8)0.0520 (9)0.0476 (8)−0.0098 (7)0.0139 (7)−0.0029 (7)
C140.0677 (10)0.0469 (9)0.0613 (11)−0.0081 (8)0.0260 (9)−0.0119 (8)
C150.0736 (11)0.0420 (9)0.0670 (11)0.0037 (8)0.0275 (9)0.0034 (8)
C160.0571 (9)0.0498 (9)0.0498 (9)0.0016 (7)0.0176 (7)0.0083 (7)
C170.0429 (7)0.0429 (8)0.0426 (8)−0.0046 (6)0.0146 (6)0.0033 (6)
C180.0485 (8)0.0489 (8)0.0396 (8)−0.0080 (6)0.0132 (6)0.0010 (6)
C190.0380 (6)0.0349 (7)0.0383 (7)−0.0038 (5)0.0098 (5)−0.0032 (5)
C200.0477 (7)0.0362 (7)0.0453 (8)−0.0065 (6)0.0170 (6)−0.0035 (6)
C210.0480 (8)0.0405 (8)0.0611 (10)0.0006 (6)0.0267 (7)0.0062 (7)
C220.0780 (12)0.0463 (9)0.0926 (14)0.0087 (8)0.0524 (11)0.0089 (9)
C230.0805 (14)0.0618 (13)0.134 (2)0.0262 (11)0.0619 (16)0.0306 (14)
C240.0582 (11)0.0838 (16)0.129 (2)0.0260 (11)0.0339 (13)0.0571 (16)
C250.0481 (9)0.0771 (13)0.0796 (13)0.0005 (9)0.0108 (9)0.0307 (11)
C260.0370 (7)0.0469 (8)0.0578 (9)−0.0028 (6)0.0141 (6)0.0135 (7)
C270.0434 (7)0.0443 (8)0.0428 (8)−0.0079 (6)0.0064 (6)−0.0026 (6)
O1—C111.2073 (18)C11—C121.483 (2)
O2—C181.2092 (18)C12—C131.393 (2)
O3—C201.2102 (18)C12—C171.393 (2)
N1—C101.4432 (19)C13—C141.375 (2)
N1—C91.454 (2)C13—H13A0.9300
N1—C81.459 (2)C14—C151.389 (3)
C1—C61.362 (3)C14—H14A0.9300
C1—C21.388 (3)C15—C161.384 (2)
C1—H1A0.9300C15—H15A0.9300
C2—C31.344 (4)C16—C171.389 (2)
C2—H2A0.9300C16—H16A0.9300
C3—C41.346 (4)C17—C181.475 (2)
C3—H3A0.9300C19—C271.5411 (19)
C4—C51.387 (3)C19—C201.5438 (19)
C4—H4A0.9300C20—C211.470 (2)
C5—C61.366 (3)C21—C261.384 (2)
C5—H5A0.9300C21—C221.400 (2)
C6—C71.515 (2)C22—C231.370 (3)
C7—C81.542 (2)C22—H22A0.9300
C7—C191.549 (2)C23—C241.390 (4)
C7—H7A0.9800C23—H23A0.9300
C8—H8A0.9700C24—C251.390 (3)
C8—H8B0.9700C24—H24A0.9300
C9—H9A0.9600C25—C261.389 (2)
C9—H9B0.9600C25—H25A0.9300
C9—H9C0.9600C26—C271.508 (2)
C10—C181.542 (2)C27—H27A0.9700
C10—C111.551 (2)C27—H27B0.9700
C10—C191.5766 (19)
C10—N1—C9117.49 (14)C14—C13—C12117.91 (16)
C10—N1—C8109.06 (12)C14—C13—H13A121.0
C9—N1—C8115.95 (15)C12—C13—H13A121.0
C6—C1—C2121.8 (2)C13—C14—C15121.34 (16)
C6—C1—H1A119.1C13—C14—H14A119.3
C2—C1—H1A119.1C15—C14—H14A119.3
C3—C2—C1120.8 (2)C16—C15—C14121.36 (16)
C3—C2—H2A119.6C16—C15—H15A119.3
C1—C2—H2A119.6C14—C15—H15A119.3
C2—C3—C4118.2 (2)C15—C16—C17117.45 (15)
C2—C3—H3A120.9C15—C16—H16A121.3
C4—C3—H3A120.9C17—C16—H16A121.3
C3—C4—C5121.4 (2)C16—C17—C12121.24 (14)
C3—C4—H4A119.3C16—C17—C18128.89 (14)
C5—C4—H4A119.3C12—C17—C18109.83 (13)
C6—C5—C4121.1 (2)O2—C18—C17126.70 (14)
C6—C5—H5A119.4O2—C18—C10125.44 (14)
C4—C5—H5A119.4C17—C18—C10107.82 (12)
C1—C6—C5116.57 (17)C27—C19—C20103.96 (11)
C1—C6—C7120.11 (15)C27—C19—C7116.64 (11)
C5—C6—C7123.30 (16)C20—C19—C7114.48 (12)
C6—C7—C8116.63 (13)C27—C19—C10111.13 (11)
C6—C7—C19115.67 (12)C20—C19—C10110.71 (11)
C8—C7—C19103.73 (12)C7—C19—C10100.09 (11)
C6—C7—H7A106.7O3—C20—C21127.61 (14)
C8—C7—H7A106.7O3—C20—C19125.02 (14)
C19—C7—H7A106.7C21—C20—C19107.37 (12)
N1—C8—C7106.11 (12)C26—C21—C22122.67 (16)
N1—C8—H8A110.5C26—C21—C20109.10 (13)
C7—C8—H8A110.5C22—C21—C20128.23 (17)
N1—C8—H8B110.5C23—C22—C21117.4 (2)
C7—C8—H8B110.5C23—C22—H22A121.3
H8A—C8—H8B108.7C21—C22—H22A121.3
N1—C9—H9A109.5C22—C23—C24120.5 (2)
N1—C9—H9B109.5C22—C23—H23A119.7
H9A—C9—H9B109.5C24—C23—H23A119.7
N1—C9—H9C109.5C23—C24—C25122.1 (2)
H9A—C9—H9C109.5C23—C24—H24A119.0
H9B—C9—H9C109.5C25—C24—H24A119.0
N1—C10—C18113.94 (12)C26—C25—C24117.9 (2)
N1—C10—C11117.22 (13)C26—C25—H25A121.0
C18—C10—C11101.33 (11)C24—C25—H25A121.0
N1—C10—C19101.41 (11)C21—C26—C25119.43 (17)
C18—C10—C19112.68 (12)C21—C26—C27111.98 (13)
C11—C10—C19110.70 (11)C25—C26—C27128.58 (17)
O1—C11—C12127.32 (14)C26—C27—C19104.01 (12)
O1—C11—C10125.30 (15)C26—C27—H27A111.0
C12—C11—C10107.33 (12)C19—C27—H27A111.0
C13—C12—C17120.70 (14)C26—C27—H27B111.0
C13—C12—C11129.62 (14)C19—C27—H27B111.0
C17—C12—C11109.66 (13)H27A—C27—H27B109.0
C6—C1—C2—C32.3 (5)N1—C10—C18—O232.0 (2)
C1—C2—C3—C4−2.5 (5)C11—C10—C18—O2158.81 (16)
C2—C3—C4—C50.7 (5)C19—C10—C18—O2−82.9 (2)
C3—C4—C5—C61.5 (5)N1—C10—C18—C17−145.92 (13)
C2—C1—C6—C50.0 (4)C11—C10—C18—C17−19.09 (15)
C2—C1—C6—C7−178.7 (2)C19—C10—C18—C1799.24 (14)
C4—C5—C6—C1−1.8 (4)C6—C7—C19—C27−42.73 (18)
C4—C5—C6—C7176.8 (2)C8—C7—C19—C2786.27 (15)
C1—C6—C7—C8176.65 (19)C6—C7—C19—C2078.95 (15)
C5—C6—C7—C8−1.9 (3)C8—C7—C19—C20−152.06 (13)
C1—C6—C7—C19−61.0 (2)C6—C7—C19—C10−162.65 (12)
C5—C6—C7—C19120.5 (2)C8—C7—C19—C10−33.65 (14)
C10—N1—C8—C716.59 (18)N1—C10—C19—C27−80.25 (14)
C9—N1—C8—C7151.92 (17)C18—C10—C19—C2741.96 (16)
C6—C7—C8—N1140.91 (14)C11—C10—C19—C27154.64 (12)
C19—C7—C8—N112.50 (17)N1—C10—C19—C20164.75 (12)
C9—N1—C10—C1866.1 (2)C18—C10—C19—C20−73.04 (15)
C8—N1—C10—C18−159.39 (14)C11—C10—C19—C2039.63 (16)
C9—N1—C10—C11−52.0 (2)N1—C10—C19—C743.60 (13)
C8—N1—C10—C1182.57 (16)C18—C10—C19—C7165.81 (12)
C9—N1—C10—C19−172.61 (16)C11—C10—C19—C7−81.52 (13)
C8—N1—C10—C19−38.06 (16)C27—C19—C20—O3162.64 (14)
N1—C10—C11—O1−34.0 (2)C7—C19—C20—O334.26 (19)
C18—C10—C11—O1−158.66 (17)C10—C19—C20—O3−77.95 (18)
C19—C10—C11—O181.6 (2)C27—C19—C20—C21−17.88 (14)
N1—C10—C11—C12143.58 (13)C7—C19—C20—C21−146.26 (12)
C18—C10—C11—C1218.94 (15)C10—C19—C20—C21101.54 (13)
C19—C10—C11—C12−100.80 (14)O3—C20—C21—C26−169.99 (15)
O1—C11—C12—C13−13.2 (3)C19—C20—C21—C2610.55 (16)
C10—C11—C12—C13169.23 (15)O3—C20—C21—C2210.7 (3)
O1—C11—C12—C17165.01 (17)C19—C20—C21—C22−168.81 (15)
C10—C11—C12—C17−12.52 (16)C26—C21—C22—C230.6 (2)
C17—C12—C13—C14−0.4 (2)C20—C21—C22—C23179.92 (17)
C11—C12—C13—C14177.69 (16)C21—C22—C23—C24−0.3 (3)
C12—C13—C14—C150.0 (2)C22—C23—C24—C25−0.5 (3)
C13—C14—C15—C160.4 (3)C23—C24—C25—C260.9 (3)
C14—C15—C16—C17−0.3 (3)C22—C21—C26—C25−0.2 (2)
C15—C16—C17—C120.0 (2)C20—C21—C26—C25−179.63 (14)
C15—C16—C17—C18−177.50 (16)C22—C21—C26—C27−179.01 (14)
C13—C12—C17—C160.4 (2)C20—C21—C26—C271.59 (17)
C11—C12—C17—C16−178.01 (14)C24—C25—C26—C21−0.5 (3)
C13—C12—C17—C18178.31 (13)C24—C25—C26—C27178.03 (16)
C11—C12—C17—C18−0.12 (17)C21—C26—C27—C19−12.89 (16)
C16—C17—C18—O212.6 (3)C25—C26—C27—C19168.47 (16)
C12—C17—C18—O2−165.04 (16)C20—C19—C27—C2618.05 (14)
C16—C17—C18—C10−169.50 (15)C7—C19—C27—C26145.09 (12)
C12—C17—C18—C1012.82 (16)C10—C19—C27—C26−101.08 (13)
D—H···AD—HH···AD···AD—H···A
C27—H27A···O20.972.423.069 (2)124
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
C27—H27A⋯O20.972.423.069 (2)124
  9 in total

Review 1.  Prospects for new antitubercular drugs.

Authors:  Ken Duncan; Clifton E Barry
Journal:  Curr Opin Microbiol       Date:  2004-10       Impact factor: 7.934

2.  Facile synthesis of active antitubercular, cytotoxic and antibacterial agents: a Michael addition approach.

Authors:  Madhukar S Chande; Ranjit S Verma; Pravin A Barve; Rahul R Khanwelkar; R B Vaidya; K B Ajaikumar
Journal:  Eur J Med Chem       Date:  2005-07-22       Impact factor: 6.514

3.  A short history of SHELX.

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

4.  A highly atom economic, chemo-, regio- and stereoselective synthesis and evaluation of spiro-pyrrolothiazoles as antitubercular agents.

Authors:  Subramanian Vedhanarayanan Karthikeyan; Balasubramanian Devi Bala; Velanganni Paul Alex Raja; Subbu Perumal; Perumal Yogeeswari; Dharmarajan Sriram
Journal:  Bioorg Med Chem Lett       Date:  2009-10-29       Impact factor: 2.823

5.  Antimycobacterial activity of novel N-(substituted)-2-isonicotinoylhydrazinocarbothioamide endowed with high activity towards isoniazid resistant tuberculosis.

Authors:  Dharmarajan Sriram; Perumal Yogeeswari; Darshini Yelamanchili Priya
Journal:  Biomed Pharmacother       Date:  2008-02-25       Impact factor: 6.529

6.  Synthesis, antimicrobial and antifungal activity of a new class of spiro pyrrolidines.

Authors:  A Amal Raj; R Raghunathan; M R SrideviKumari; N Raman
Journal:  Bioorg Med Chem       Date:  2003-02-06       Impact factor: 3.641

7.  16-[(E)-Benzyl-idene]-13-hy-droxy-4-methyl-2-phenyl-4,14-diaza-penta-cyclo-[12.3.1.0.0.0]octa-deca-7(12),8,10-triene-6,17-dione.

Authors:  Raju Suresh Kumar; Hasnah Osman; Mohamed Ashraf Ali; Ching Kheng Quah; Hoong-Kun Fun
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2010-06-05

8.  4'-[5-(4-Fluoro-phen-yl)pyridin-3-yl]-1'-methyl-dispiro-[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Rusli Ismail; Ching Kheng Quah; Hoong-Kun Fun
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-08-27

9.  Structure validation in chemical crystallography.

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

1.  7'-Phenyl-5',6',7',7a'-tetra-hydro-dipiro[indan-2,5'-pyrrolo-[1,2-c][1,3]thia-zole-6',2''-indan]-1,3,1''-trione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Tan Soo Choon; Ching Kheng Quah; Hoong-Kun Fun
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-11-05

2.  4'-[5-(4-Fluoro-phen-yl)pyridin-3-yl]-1'-methyl-dispiro-[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Rusli Ismail; Ching Kheng Quah; Hoong-Kun Fun
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-08-27

3.  4'-(4-Chlorophenyl)-1'-methyldispiro[indan-2,2'-pyrrolidine-3',2''-indan]-1,3,1''-trione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Yeong Keng Yoon; Ching Kheng Quah; Hoong-Kun Fun
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-08-27

4.  7'-(2,5-Dimeth-oxy-phen-yl)-1',3',5',6',7',7a'-hexa-hydro-dispiro-[indan-2,5'-pyrrolo-[1,2-c][1,3]thia-zole-6',2''-indan]-1,3,1''-trione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Tan Soo Choon; Ibrahim Abdul Razak; Suhana Arshad
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-02-04

5.  7'-[4-(Trifluoro-meth-yl)phen-yl]-5',6',7',7a'-tetra-hydrodispiro-[indan-2,5'-pyrrolo-[1,2-c][1,3]thia-zole-6',2''-indan]-1,3,1''-trione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Rusli Ismail; Ching Kheng Quah; Hoong-Kun Fun
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-11-12

6.  7'-(4-Bromo-phen-yl)-5',6',7',7a'-tetra-hydro-dispiro-[indan-2,5'-pyrrolo-[1,2-c][1,3]thia-zole-6',2''-indan]-1,3,1''-trione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Yeong Keng Yoon; Ching Kheng Quah; Hoong-Kun Fun
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-11-12

7.  7'-Phenyl-1',3',5',6',7',7a'-hexa-hydro-dipiro[acenaphthyl-ene-1,5'-pyrrolo-[1,2-c]thia-zole-6',2''-indane]-2,1''(1H)-dione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Tan Soo Choon; Suhana Arshad; Ibrahim Abdul Razak
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-03-31

8.  1'-Methyl-4'-[4-(trifluoro-meth-yl)phen-yl]dispiro-[acenaphthyl-ene-1,2'-pyrrolidine-3',2''-indane]-2,1''(1H)-dione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Tan Soo Choon; Suhana Arshad; Ibrahim Abdul Razak
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-04-04

9.  4'-(4-Bromo-phen-yl)-1'-methyl-dispiro-[acenaphthyl-ene-1,2'-pyrrolidine-3',2''-indane]-2,1''(1H)-dione.

Authors:  Ang Chee Wei; Mohamed Ashraf Ali; Tan Soo Choon; Suhana Arshad; Ibrahim Abdul Razak
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-04-13
  9 in total

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