Literature DB >> 22064753

3-(4-Chloro-benzene-sulfonamido)-5-methyl-cyclo-hex-2-en-1-one.

Patrice L Jackson, Henry North, Mariano S Alexander, Gervas E Assey, Kenneth R Scott, Ray J Butcher.   

Abstract

For the title compound, C(13)H(14)ClNO(3)S, geometrical parameters, determined using X-ray diffraction techniques, are compan class="Disease">red with those calculated by density functional theory (DFT), using hybrid exchange-correlation functional, B3LYP methods. The dihedral angle between the benzene ring and the conjugated part of the cyclo-hexene ring is 87.47 (5)°. The cyclo-hexene ring and its substituents are disordered over two conformations, with occupancies of 0.786 (3) and 0.214 (3). In the crystal, mol-ecules are linked into chains in the c-axis direction by inter-molecular N-H⋯O(C=O) hydrogen bonds. C-H⋯O inter-actions are also observed.

Entities:  

Year:  2011        PMID: 22064753      PMCID: PMC3200777          DOI: 10.1107/S1600536811030662

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


Related literature

For the crystal growth of the title compound, see: Assey (2010 ▶). For related enaminone structures and properties, see: Edafiogho et al. (2006 ▶, 2007 ▶); Eddington et al. (2000 ▶); Jackson (2009 ▶); Michael et al. (1996 ▶, 2001 ▶). For their anti-convulsant activity, see: Stables & Kupferburg (1997 ▶). For information related to GAUSSIAN software, see: Frisch et al. (2004 ▶)

Experimental

Crystal data

C13H14ClNO3S M = 299.76 Monoclinic, a = 10.2031 (2) Å b = 10.3267 (3) Å c = 14.1217 (3) Å β = 108.989 (3)° V = 1406.95 (6) Å3 Z = 4 Cu Kα radiation μ = 3.83 mm−1 T = 295 K 0.76 × 0.61 × 0.31 mm

Data collection

Oxford Diffraction Gemini R diffractometer Absorption correction: analytical [CrysAlis RED (Oxford Diffraction, 2009 ▶), based on expressions derived by Clark & Reid (1995 ▶)] T min = 0.119, T max = 0.355 5137 measured reflections 2778 independent reflections 2547 reflections with I > 2σ(I) R int = 0.047

Refinement

R[F 2 > 2σ(F 2)] = 0.083 wR(F 2) = 0.250 S = 1.07 2778 reflections 205 parameters 18 restraints H atoms treated by a mixture of independent and constrained refinement Δρmax = 1.26 e Å−3 Δρmin = −0.65 e Å−3 Data collection: CrysAlis CCD (Oxford Diffraction, 2009 ▶); cell refinement: CrysAlis RED (Oxford Diffraction, 2009 ▶); data n class="Disease">reduction: CrysAlis RED; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: SHELXTL (Sheldrick, 2008 ▶); software used to prepare material for publication: SHELXTL. Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S1600536811030662/hg5071sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536811030662/hg5071Isup2.hkl Supplementary material file. DOI: 10.1107/S1600536811030662/hg5071Isup3.cml Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C13H14ClNO3SF(000) = 624
Mr = 299.76Dx = 1.415 Mg m3
Monoclinic, P21/cCu Kα radiation, λ = 1.54184 Å
Hall symbol: -P 2ybcCell parameters from 4047 reflections
a = 10.2031 (2) Åθ = 4.3–77.2°
b = 10.3267 (3) ŵ = 3.83 mm1
c = 14.1217 (3) ÅT = 295 K
β = 108.989 (3)°Large plate, colorless
V = 1406.95 (6) Å30.76 × 0.61 × 0.31 mm
Z = 4
Oxford Diffraction Gemini R diffractometer2778 independent reflections
Radiation source: fine-focus sealed tube2547 reflections with I > 2σ(I)
graphiteRint = 0.047
Detector resolution: 10.5081 pixels mm-1θmax = 77.7°, θmin = 4.6°
φ and ω scansh = −12→11
Absorption correction: analytical [CrysAlis RED (Oxford Diffraction, 2009), based on expressions derived by Clark & Reid (1995)]k = −11→12
Tmin = 0.119, Tmax = 0.355l = −17→16
5137 measured reflections
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.083H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.250w = 1/[σ2(Fo2) + (0.183P)2 + 0.6772P] where P = (Fo2 + 2Fc2)/3
S = 1.07(Δ/σ)max = 0.001
2778 reflectionsΔρmax = 1.26 e Å3
205 parametersΔρmin = −0.65 e Å3
18 restraintsExtinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.0074 (13)
Experimental. CrysAlis RED (Oxford Diffraction , 2009) Analytical numeric absorption correction using a multifaceted crystal model based on expressions derived by R.C. Clark & J.S. Reid. (Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
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)
Cl1.22572 (8)0.52485 (10)0.58620 (7)0.0804 (3)
S0.75611 (6)0.92036 (5)0.56637 (4)0.04691 (16)
O10.7602 (2)1.02174 (17)0.49885 (16)0.0609 (5)
O20.7649 (2)0.9502 (2)0.66719 (15)0.0706 (6)
N0.60950 (18)0.84131 (18)0.52132 (10)0.0412 (4)
H1N0.591 (2)0.802 (2)0.5668 (14)0.048 (7)*
C10.8877 (2)0.8073 (2)0.56969 (17)0.0441 (5)
C20.9599 (3)0.8170 (3)0.5024 (2)0.0538 (6)
H2A0.93850.88170.45400.065*
C31.0638 (3)0.7296 (3)0.5081 (2)0.0605 (7)
H3A1.11370.73510.46360.073*
C41.0935 (2)0.6346 (3)0.5792 (2)0.0557 (7)
C51.0217 (3)0.6238 (3)0.6468 (2)0.0596 (7)
H5A1.04330.55850.69480.072*
C60.9181 (2)0.7110 (3)0.64169 (19)0.0534 (6)
H6A0.86860.70540.68640.064*
O3A'0.5775 (3)0.8028 (3)0.17833 (16)0.0530 (5)0.786 (3)
C1A'0.5533 (3)0.7962 (2)0.42417 (12)0.0339 (4)0.786 (3)
C2A'0.6036 (3)0.8212 (3)0.34828 (19)0.0364 (5)0.786 (3)
H2AA0.68080.87450.35990.044*0.786 (3)
C3A'0.5401 (3)0.7671 (3)0.2502 (2)0.0393 (5)0.786 (3)
C4A'0.4276 (3)0.6688 (3)0.2359 (2)0.0466 (7)0.786 (3)
H4AA0.46850.58320.24970.056*0.786 (3)
H4AB0.36770.67040.16660.056*0.786 (3)
C5A'0.3411 (3)0.6942 (3)0.3040 (2)0.0437 (7)0.786 (3)
H5AA0.29540.77840.28550.052*0.786 (3)
C6A'0.4363 (3)0.7032 (3)0.4122 (2)0.0421 (6)0.786 (3)
H6AA0.38280.73080.45420.051*0.786 (3)
H6AB0.47380.61810.43470.051*0.786 (3)
C7A'0.2296 (4)0.5931 (4)0.2902 (3)0.0558 (9)0.786 (3)
H7AA0.17090.59220.22150.084*0.786 (3)
H7AB0.17530.61320.33240.084*0.786 (3)
H7AC0.27180.50960.30790.084*0.786 (3)
O3B'0.5921 (10)0.7747 (12)0.1904 (6)0.0530 (5)0.214 (3)
C1B'0.5549 (9)0.7864 (5)0.4272 (2)0.0339 (4)0.214 (3)
C2B'0.5841 (11)0.8367 (12)0.3478 (6)0.0364 (5)0.214 (3)
H2BA0.64050.90930.35520.044*0.214 (3)
C3B'0.5260 (10)0.7750 (12)0.2512 (7)0.0393 (5)0.214 (3)
C4B'0.3941 (10)0.7012 (12)0.2334 (7)0.0466 (7)0.214 (3)
H4BA0.38420.63990.17950.056*0.214 (3)
H4BB0.31690.76120.21190.056*0.214 (3)
C5B'0.3867 (10)0.6284 (10)0.3246 (6)0.0437 (7)0.214 (3)
H5BA0.45700.56000.33950.052*0.214 (3)
C6B'0.4207 (11)0.7179 (13)0.4147 (8)0.0421 (6)0.214 (3)
H6BA0.34700.78080.40530.051*0.214 (3)
H6BB0.42820.66800.47440.051*0.214 (3)
C7B'0.2415 (16)0.5623 (17)0.3043 (14)0.0558 (9)0.214 (3)
H7BA0.17110.62770.29200.084*0.214 (3)
H7BB0.24230.51200.36170.084*0.214 (3)
H7BC0.22250.50680.24690.084*0.214 (3)
U11U22U33U12U13U23
Cl0.0536 (4)0.0905 (5)0.0885 (6)0.0121 (3)0.0112 (4)−0.0009 (4)
S0.0462 (3)0.0526 (3)0.0352 (3)−0.0116 (2)0.0040 (2)−0.00969 (19)
O10.0640 (10)0.0465 (9)0.0670 (11)−0.0130 (8)0.0142 (8)0.0008 (8)
O20.0764 (12)0.0880 (12)0.0396 (9)−0.0123 (11)0.0081 (8)−0.0268 (9)
N0.0399 (8)0.0581 (10)0.0253 (7)−0.0102 (7)0.0103 (6)−0.0050 (7)
C10.0329 (9)0.0557 (11)0.0368 (10)−0.0111 (8)0.0019 (8)0.0004 (8)
C20.0531 (11)0.0599 (13)0.0486 (12)−0.0120 (10)0.0170 (10)0.0062 (10)
C30.0536 (12)0.0721 (16)0.0600 (14)−0.0106 (12)0.0243 (10)0.0014 (12)
C40.0339 (10)0.0649 (14)0.0592 (14)−0.0056 (10)0.0026 (9)−0.0020 (12)
C50.0433 (11)0.0763 (16)0.0511 (13)−0.0075 (11)0.0044 (10)0.0162 (12)
C60.0404 (10)0.0725 (15)0.0426 (11)−0.0100 (10)0.0070 (9)0.0114 (10)
O3A'0.0683 (9)0.0686 (13)0.0278 (8)−0.0041 (9)0.0235 (7)0.0011 (7)
C1A'0.0317 (8)0.0430 (9)0.0264 (8)−0.0005 (7)0.0083 (6)0.0000 (7)
C2A'0.0329 (9)0.0498 (11)0.0272 (9)−0.0061 (9)0.0108 (7)−0.0035 (8)
C3A'0.0405 (10)0.0513 (11)0.0274 (9)0.0008 (9)0.0129 (8)−0.0024 (8)
C4A'0.0476 (14)0.0558 (16)0.0347 (11)−0.0052 (12)0.0112 (10)−0.0115 (10)
C5A'0.0333 (11)0.0538 (15)0.0403 (13)−0.0072 (10)0.0071 (9)−0.0063 (11)
C6A'0.0367 (10)0.0599 (13)0.0313 (9)−0.0072 (9)0.0132 (8)0.0001 (9)
C7A'0.0404 (11)0.0595 (19)0.0639 (17)−0.0150 (12)0.0122 (11)−0.0074 (14)
O3B'0.0683 (9)0.0686 (13)0.0278 (8)−0.0041 (9)0.0235 (7)0.0011 (7)
C1B'0.0317 (8)0.0430 (9)0.0264 (8)−0.0005 (7)0.0083 (6)0.0000 (7)
C2B'0.0329 (9)0.0498 (11)0.0272 (9)−0.0061 (9)0.0108 (7)−0.0035 (8)
C3B'0.0405 (10)0.0513 (11)0.0274 (9)0.0008 (9)0.0129 (8)−0.0024 (8)
C4B'0.0476 (14)0.0558 (16)0.0347 (11)−0.0052 (12)0.0112 (10)−0.0115 (10)
C5B'0.0333 (11)0.0538 (15)0.0403 (13)−0.0072 (10)0.0071 (9)−0.0063 (11)
C6B'0.0367 (10)0.0599 (13)0.0313 (9)−0.0072 (9)0.0132 (8)0.0001 (9)
C7B'0.0404 (11)0.0595 (19)0.0639 (17)−0.0150 (12)0.0122 (11)−0.0074 (14)
Cl—C41.740 (3)C4A'—H4AB0.9700
S—O11.426 (2)C5A'—C7A'1.509 (5)
S—O21.431 (2)C5A'—C6A'1.524 (4)
S—N1.6400 (17)C5A'—H5AA0.9800
S—C11.768 (2)C6A'—H6AA0.9700
N—C1B'1.384 (2)C6A'—H6AB0.9700
N—C1A'1.3843 (18)C7A'—H7AA0.9600
N—H1N0.833 (16)C7A'—H7AB0.9600
C1—C21.382 (4)C7A'—H7AC0.9600
C1—C61.383 (3)O3B'—C3B'1.252 (12)
C2—C31.375 (4)C1B'—C2B'1.355 (10)
C2—H2A0.9300C1B'—C6B'1.499 (11)
C3—C41.365 (4)C2B'—C3B'1.446 (11)
C3—H3A0.9300C2B'—H2BA0.9300
C4—C51.384 (4)C3B'—C4B'1.494 (12)
C5—C61.373 (4)C4B'—C5B'1.514 (12)
C5—H5A0.9300C4B'—H4BA0.9700
C6—H6A0.9300C4B'—H4BB0.9700
O3A'—C3A'1.251 (4)C5B'—C6B'1.519 (12)
C1A'—C2A'1.356 (4)C5B'—C7B'1.570 (18)
C1A'—C6A'1.498 (4)C5B'—H5BA0.9800
C2A'—C3A'1.437 (3)C6B'—H6BA0.9700
C2A'—H2AA0.9300C6B'—H6BB0.9700
C3A'—C4A'1.496 (4)C7B'—H7BA0.9600
C4A'—C5A'1.525 (4)C7B'—H7BB0.9600
C4A'—H4AA0.9700C7B'—H7BC0.9600
O1—S—O2120.11 (14)C7A'—C5A'—C4A'111.5 (3)
O1—S—N109.11 (10)C6A'—C5A'—C4A'109.4 (2)
O2—S—N104.28 (12)C7A'—C5A'—H5AA107.8
O1—S—C1108.39 (12)C6A'—C5A'—H5AA107.8
O2—S—C1108.34 (13)C4A'—C5A'—H5AA107.8
N—S—C1105.70 (10)C1A'—C6A'—C5A'112.1 (2)
C1B'—N—S127.4 (4)C1A'—C6A'—H6AA109.2
C1A'—N—S125.70 (16)C5A'—C6A'—H6AA109.2
C1B'—N—H1N114.7 (17)C1A'—C6A'—H6AB109.2
C1A'—N—H1N118.3 (16)C5A'—C6A'—H6AB109.2
S—N—H1N110.6 (15)H6AA—C6A'—H6AB107.9
C2—C1—C6121.0 (2)C2B'—C1B'—N120.6 (6)
C2—C1—S120.28 (19)C2B'—C1B'—C6B'121.5 (6)
C6—C1—S118.7 (2)N—C1B'—C6B'112.0 (6)
C3—C2—C1119.1 (2)C1B'—C2B'—C3B'118.6 (9)
C3—C2—H2A120.5C1B'—C2B'—H2BA120.7
C1—C2—H2A120.5C3B'—C2B'—H2BA120.7
C4—C3—C2119.8 (3)O3B'—C3B'—C2B'120.0 (9)
C4—C3—H3A120.1O3B'—C3B'—C4B'122.7 (9)
C2—C3—H3A120.1C2B'—C3B'—C4B'117.0 (9)
C3—C4—C5121.7 (3)C3B'—C4B'—C5B'113.7 (8)
C3—C4—Cl119.5 (2)C3B'—C4B'—H4BA108.8
C5—C4—Cl118.9 (2)C5B'—C4B'—H4BA108.8
C6—C5—C4118.8 (3)C3B'—C4B'—H4BB108.8
C6—C5—H5A120.6C5B'—C4B'—H4BB108.8
C4—C5—H5A120.6H4BA—C4B'—H4BB107.7
C5—C6—C1119.7 (3)C4B'—C5B'—C6B'110.5 (9)
C5—C6—H6A120.2C4B'—C5B'—C7B'111.5 (9)
C1—C6—H6A120.2C6B'—C5B'—C7B'111.2 (10)
C2A'—C1A'—N125.3 (2)C4B'—C5B'—H5BA107.8
C2A'—C1A'—C6A'121.7 (2)C6B'—C5B'—H5BA107.8
N—C1A'—C6A'112.7 (2)C7B'—C5B'—H5BA107.8
C1A'—C2A'—C3A'121.3 (2)C1B'—C6B'—C5B'109.7 (8)
C1A'—C2A'—H2AA119.4C1B'—C6B'—H6BA109.7
C3A'—C2A'—H2AA119.4C5B'—C6B'—H6BA109.7
O3A'—C3A'—C2A'120.4 (3)C1B'—C6B'—H6BB109.7
O3A'—C3A'—C4A'120.9 (2)C5B'—C6B'—H6BB109.7
C2A'—C3A'—C4A'118.7 (3)H6BA—C6B'—H6BB108.2
C3A'—C4A'—C5A'111.9 (2)C5B'—C7B'—H7BA109.5
C3A'—C4A'—H4AA109.2C5B'—C7B'—H7BB109.5
C5A'—C4A'—H4AA109.2H7BA—C7B'—H7BB109.5
C3A'—C4A'—H4AB109.2C5B'—C7B'—H7BC109.5
C5A'—C4A'—H4AB109.2H7BA—C7B'—H7BC109.5
H4AA—C4A'—H4AB107.9H7BB—C7B'—H7BC109.5
C7A'—C5A'—C6A'112.3 (3)
O1—S—N—C1B'53.1 (4)C6A'—C1A'—C2A'—C3A'4.8 (4)
O2—S—N—C1B'−177.4 (4)C1A'—C2A'—C3A'—O3A'171.7 (3)
C1—S—N—C1B'−63.2 (4)C1A'—C2A'—C3A'—C4A'−7.5 (4)
O1—S—N—C1A'48.0 (2)O3A'—C3A'—C4A'—C5A'−146.2 (3)
O2—S—N—C1A'177.5 (2)C2A'—C3A'—C4A'—C5A'33.0 (4)
C1—S—N—C1A'−68.4 (2)C3A'—C4A'—C5A'—C7A'−178.9 (3)
O1—S—C1—C2−9.0 (2)C3A'—C4A'—C5A'—C6A'−54.2 (3)
O2—S—C1—C2−140.8 (2)C2A'—C1A'—C6A'—C5A'−27.7 (4)
N—S—C1—C2107.90 (19)N—C1A'—C6A'—C5A'158.0 (2)
O1—S—C1—C6169.99 (18)C7A'—C5A'—C6A'—C1A'175.5 (3)
O2—S—C1—C638.1 (2)C4A'—C5A'—C6A'—C1A'51.3 (3)
N—S—C1—C6−73.15 (19)C1A'—N—C1B'—C2B'40 (5)
C6—C1—C2—C3−0.4 (4)S—N—C1B'—C2B'−28.9 (10)
S—C1—C2—C3178.6 (2)C1A'—N—C1B'—C6B'−113 (6)
C1—C2—C3—C40.4 (4)S—N—C1B'—C6B'177.9 (6)
C2—C3—C4—C5−0.2 (4)N—C1B'—C2B'—C3B'179.2 (8)
C2—C3—C4—Cl−179.7 (2)C6B'—C1B'—C2B'—C3B'−30.1 (15)
C3—C4—C5—C60.0 (4)C1B'—C2B'—C3B'—O3B'−147.4 (12)
Cl—C4—C5—C6179.5 (2)C1B'—C2B'—C3B'—C4B'26.1 (16)
C4—C5—C6—C10.0 (4)O3B'—C3B'—C4B'—C5B'135.8 (12)
C2—C1—C6—C50.2 (4)C2B'—C3B'—C4B'—C5B'−37.6 (15)
S—C1—C6—C5−178.8 (2)C3B'—C4B'—C5B'—C6B'51.1 (13)
C1B'—N—C1A'—C2A'−121 (6)C3B'—C4B'—C5B'—C7B'175.3 (11)
S—N—C1A'—C2A'−6.9 (4)C2B'—C1B'—C6B'—C5B'43.2 (13)
C1B'—N—C1A'—C6A'53 (6)N—C1B'—C6B'—C5B'−163.8 (7)
S—N—C1A'—C6A'167.16 (19)C4B'—C5B'—C6B'—C1B'−51.6 (11)
N—C1A'—C2A'—C3A'178.3 (3)C7B'—C5B'—C6B'—C1B'−175.9 (10)
D—H···AD—HH···AD···AD—H···A
N—H1N···O3B'i0.83 (2)1.91 (2)2.729 (10)166 (2)
N—H1N···O3A'i0.83 (2)1.95 (2)2.777 (3)171 (2)
C5—H5A···O2ii0.932.533.337 (3)145.
ParametersX-rayDFT/B3LYP(3-21G**)
Cl—C41.7404 (12)1.7556
S—O11.4262 (9)1.4610
S—O21.4300 (9)1.4613
S—N1.6397 (7)1.6831
S—C11.7675 (10)1.7663
N—C1A'1.4049 (11)1.4055
O3A'—C3A'1.2376 (14)1.2415
C5A'—C7A'1.5102 (18)1.5477
O1—S—O2120.12 (5)123.44
O1—S—N109.07 (4)108.92
O2—S—N104.34 (5)103.61
O1—S—C1108.40 (5)107.79
O2—S—C1108.31 (5)108.21
N—S—C1105.69 (4)103.02
C6—C1—C2120.93 (9)121.18
C6—C1—S118.79 (8)120.04
C3—C4—C5121.65 (11)121.58
C3—C4—Cl119.40 (10)119.14
C5—C4—Cl118.95 (9)119.28
C2A'—C1A'—C6A'122.58 (8)122.53
C7A'—C5A'—C4A'110.73 (11)111.36
C1—S—N—C1A'-67.84 (8)76.42
N—S—C1—C6-73.16 (8)88.67
N—S—C1—C2107.82 (8)-92.03
S—N—C1A'—C2A'-8.93 (14)13.37
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
N—H1N⋯O3Bi0.83 (2)1.91 (2)2.729 (10)166 (2)
N—H1N⋯O3Ai0.83 (2)1.95 (2)2.777 (3)171 (2)
C5—H5A⋯O2ii0.932.533.337 (3)145

Symmetry codes: (i) ; (ii) .

  4 in total

1.  Anticonvulsant evaluation and mechanism of action of benzylamino enaminones.

Authors:  Ivan O Edafiogho; Kethireddy V V Ananthalakshmi; Samuel B Kombian
Journal:  Bioorg Med Chem       Date:  2006-04-18       Impact factor: 3.641

Review 2.  Enaminones-versatile therapeutic pharmacophores. Further advances.

Authors:  N D Eddington; D S Cox; R R Roberts; J P Stables; C B Powell; K R Scott
Journal:  Curr Med Chem       Date:  2000-04       Impact factor: 4.530

3.  A short history of SHELX.

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

Review 4.  Enaminones: Exploring additional therapeutic activities.

Authors:  Ivan O Edafiogho; Samuel B Kombian; Kethireddy V V Ananthalakshmi; Noha N Salama; Natalie D Eddington; Tiffany L Wilson; Mariano S Alexander; Patrice L Jackson; Clive D Hanson; K R Scott
Journal:  J Pharm Sci       Date:  2007-10       Impact factor: 3.534

  4 in total

北京卡尤迪生物科技股份有限公司 © 2022-2023.