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  • Industrial Chemistry and Chemical Engineering  (5)
  • Wiley-Blackwell  (5)
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  • Wiley-Blackwell  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    Organostannate derivatives of dicyclohexylammonium hydrogen 2,6-pyridinedicarboxylate: solution/solid-state 13C,119Sn NMR and in vitro antitumour activity of bis(dicyclohexylammonium) bis(2,6-pyridinedicarboxylato)dibutylstannate, and the crystal structure of its monohydrate (1997)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 11 (1997), S. 39-45 
    Details
    ISSN: 0268-2605
    Keywords: organotin ; solid-state NMR ; crystal structure ; antitumor activity ; Chemistry ; Industrial Chemistry and Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bis(dicyclohexylammonium) bis(2,6-pyridinedicarboxylato)dibutylstannate is assigned seven-fold coordination at tin on the basis of its 119Sn CP/MAS NMR chemical shift (δ=-424.9 ppm). The assignment has been corroborated by a crystal structure determination of its monohydrate, whose tin atom has the trans-C2SnNO4 pentagonal bipyramidal [Sn-C=2.040(9), 2.067(8) Å; C-Sn-C =168.9(5)°] geometry. One 2,6-pyridine- dicarboxylato group chelates to the tin atom (Sn-O=2.234(4), 2.260(4); Sn-N =2.279(5) Å) whereas the other binds through only one carboxyl -CO2 end (Sn-O=2.416(5), 2.441(5) Å). Hydrogen bonds link the cation and the stannate into a linear chain parallel to the b-axis. The lattice water molecule is hydrogen-bonded to the free carboxyl end. The anhydrous compound showed higher in vitro antitumor activity than those of carboplatin and cisplatin when screened against breast (MCF-7, EVSAT), colonic (WiDr), ovarian (IGROV) and renal (A498) carcinoma, and melanoma (M19 MEL) cell lines. © 1997 by John Wiley & Sons, Ltd.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Synthesis, characterization and in vitro antitumour activity of di-n-butyltin(;iv) derivatives of some aromatic carboxylic acids, including aspirin (1991)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 5 (1991), S. 195-201 
    Details
    ISSN: 0268-2605
    Keywords: Organotin ; NMR ; anti-tumour ; Mössbauer ; mass spectrum ; carboxylate ; Chemistry ; Industrial Chemistry and Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Eleven di-n-butyltin(;IV) derivatives of the type (;a) (;C4H9)2(;XYC6H3COO)2Sn or (;b) {[(;C4H9)2(;XYC6-H3COO)Sn]2O}2 (;X, Y = H, 2-OH, compound 1a; H, 2-OCH3, compounds 2a and 2b; H, 2-OCOCH3, 3a; 2-OH, 3-OCH3, 4a; 2-OH, 3-CH3, 5a; H, 3-OCH3, 6a and 6b; H, 3-N(;CH3)2, 7a; H, 2-(;CF3), 5-(;CF3), 8a and 3-OCH3, 4-OH, 9a) have been prepared and characterized by 1H, 13C and 119Sn NMR, Mössbauer and mass spectroscopy. The in vitro antitumour activity of these compounds against MCF-7 human tumour cells was higher than that of cis-platin, but only three compounds, 4a, 8a and 9a, scored better than cis-platin against the WiDr cell line.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590050309
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis, characterization and in vitro antitumor activity of dimethyl-, diethyl, and di-t-butyl-tin(IV) derivatives of substituted salicylic acids (1991)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 5 (1991), S. 497-506 
    Details
    ISSN: 0268-2605
    Keywords: Diorganotin ; salicylic acid ; NMR ; Mössbauer ; antitumor ; Chemistry ; Industrial Chemistry and Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The synthesis of dimethyl-, diethyl- and/or di-t-butyl-tin(IV) derivatives of substituted salicylic acids of the type a, (X-Y-2-OH-C6H2COO)2SnR2 (X, Y = H, H; H, 5-CH3; H, 5-Cl; H, 5-F; H, 3-CH3O; H, 5-CH3O; 3-CH3, 6-(CH3)2CH; 3,5-[(CH3)2CH]2 and 4,5-benzo) and b {[R2(X-Y-2-OH-C6H2COO)Sn]2O}2 (X, Y = H, 3-CH3O; H, 5-CH3O: 3-CH3, 6-(CH3)2CH; 3,5-[(CH3)2CH]2 and 4,5-benzo) is reported. Their characterization by 1H, 13C and 119Sn NMR, Mössbauer and mass spectrometry is described. The in vitro antitumor activity of selected derivatives against two human tumoral cell lines, MCF-7 and WiDr, is presented.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590050607
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis, characteristic spectral studies and in vitro antimicrobial and antitumour activities of organotin(IV) complexes of Schiff bases derived from amino-acids (1997)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 11 (1997), S. 727-736 
    Details
    ISSN: 0268-2605
    Keywords: organotin(IV) ; Schiff base ; amino-acid ; antimicrobial activity ; antitumour activity ; Chemistry ; Industrial Chemistry and Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Equimolar reactions of dibutyltin(IV) oxide with Schiff bases derived from amino-acids led to the formation of a new series of dibutyltin(IV) complexes of general formula, Bu2SnL [L=dianion of tridentate Schiff bases derived from the condensation of 2-hydroxy-1-naphthaldehyde or acetyl acetone with glycine (L-1), L-β-alanine (L-2), DL-valine (L-3), DL-4-aminobutyric acid (L-4), L-methionine (L-5), L-leucine (L-6) and phenylglycine (L-7)]. An attempt has been made to prove the structures of the resulting complexes on the basis of elemental analyses, conductance measurements and electronic, IR, multinuclear magnetic resonance (1H, 13C and 117Sn) and 119Sn Mössbauer spectral studies. The complexes have been tested against various bacteria [Streptococcus faecalis, Klebsiella pneumoniae, Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus penicillin resistance (2500 units)] and fungi (Candida albicans, Cryptococcus neoformans, Sporotrichum schenckii,Trichophyton mentagrophytes and Aspergillus fumigatus). All the complexes showed moderate activity. The cytotoxicity of a few compounds has been screened in vitro against seven human tumour cell lines, viz. MCF-7, EVSA-T, WiDr, IGROV, M19 MEL, A498 and H226. The activities found experimentally were better than those obtained for cisplatin and carboplatin © 1997 John Wiley & Sons, Ltd.
    Additional Material: 2 Ill.
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  • 5
    Electronic Resource
    Electronic Resource
    Organotin gibberellates: Synthesis, spectroscopic characterization and antitumour activity (1998)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 12 (1998), S. 855-859 
    Details
    ISSN: 0268-2605
    Keywords: butyltin ; phenyltin ; gibberellates ; antitumour ; Chemistry ; Industrial Chemistry and Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The synthesis and characterization of di-n-butyl-, tri-n-butyl- and triphenyltin gibberellates are reported. Their antitumour activities in vitro against a panel of seven human tumour cell lines are given and compared with those of drugs used clinically. Copyright © 1998 John Wiley & Sons, Ltd.
    Additional Material: 2 Ill.
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