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  • Analytical Chemistry and Spectroscopy  (3)
  • cellulose-based chiral stationary phase  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Direct chromatographic resolution of racemic cyclohexylaminoglutethimide and its acetylated metabolite using cellulose-based chiral stationary phase (1991)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 3 (1991), S. 204-207 
    Details
    ISSN: 0899-0042
    Keywords: chiral chromatography ; cellulose-based chiral stationary phase ; aromatase inhibitor ; cyclohexylaminoglutethimide and metabolite ; enantiomeric separation ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Racemic cyclohexylaminoglutethimide (±ChAG) and its acetylated metabolite (±ChAG) were resolved by a direct chromatographic method using a Chiracel OD column without derivatization. Maximum resolutions (R) of 4.89 and 0.74 were obtained for the enantiomers of cyclohexylaminoglutethimide and its acetylated metabolite, respectively.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/chir.530030311
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  • 2
    Electronic Resource
    Electronic Resource
    Investigation of the enantioselectivity and enantiomeric elution order of some piperidine-2,6-dione drugs on chiralcel OD column (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 6 (1994), S. 378-381 
    Details
    ISSN: 0899-0042
    Keywords: piperidine-2,6-diones enantiomers ; chiral recognition mechanism(s) ; enantioselective elution order and chirality ; cellulose-based chiral stationary phase ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The enantioselectivity and enantiomeric separation of five racemic piperidine-2,6-dione compounds, on the cellulose tris(3,5-dimethylphenyl carbamate) chiral stationary phase Chiralcel OD-CSP were investigated under the same chromatographic conditions. This class of drugs includes glutethimide, aminoglutethimide, cyclohexylaminoglutethimide, pyridoglutethimide, and phenglutarimide. The results revealed that chiral recognition and the binding sites of these drugs on the Chiralcel OD column are similar, regardless of the absolute configuration of the individual enantiomers. A possible chiral recognition mechanism(s) for this class of drugs and the CSP is presented. © 1994 Wiley-Liss, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/chir.530060504
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  • 3
    Electronic Resource
    Electronic Resource
    IR and UV/visible spectra of propranolol and some fluorinated derivatives: Comparison of experimental and calculated values (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Biospectroscopy 2 (1996), S. 131-141 
    Details
    ISSN: 1075-4261
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Physics
    Notes: This paper reports on studies of the IR and UV/Vis spectra of propranolol and three of its fluorinated derivatives (namely, trifluoroethyl-propranolol, pentafluoropropyl-propranolol, and heptafluorobutyl-propranolol). The semi-empirical method, AM1 was used to optimize the structures. In the case of IR spectra the calculated and experimental frequency bands for particular assignments of modes overlap significantly. For the UV spectra main peaks of the theoretical spectra are underestimated by about 60 nm on the average from the experimental spectra, perhaps because the estimations were done in different phases, gaseous for the theoretical and ethanol for the experimental. The UV spectra of the four compounds are very similar. © 1996 John Wiley & Sons, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Chemiluminescence accompanying oxidation of bopindolol (1998)
    New York, NY [u.a.] : Wiley-Blackwell
    Biospectroscopy 4 (1998), S. 229-233 
    Details
    ISSN: 1075-4261
    Keywords: bopindolol ; luminescence ; oxygen radicals ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Physics
    Notes: The oxidation of bopindolol using the Co-ethylenediaminetetraacetic acid (EDTA) + H2O2 system was investigated by spectrophotometric, chemiluminescence, and fluorescence methods. The effects of oxygen free radicals scavengers and 1O2 quenchers on the light emission were measured. The obtained results show the electronically excited products of the bopindolol degradation are involved in the oxidation process. © 1998 John Wiley & Sons, Inc. Biospectroscopy 4: 229-233, 1998
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Preferred conformations of pilocarpine, pilocarpine.HCl and isopilocarpine.HCl in solution, deduced from 200 MHz 1H NMR spectra (1984)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 22 (1984), S. 454-455 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The 200 MHz 1H NMR spectra of pilocarpine, pilocarpine.HCl and isopilocarpine.HCl have been studied. Evidence is presented for the preferred conformations of the compounds in aqueous solution, with the methylimidazolyl moiety antiperiplanar with respect to the α-carbon of the butanolide ring.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270220712
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