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  • 1
    Digitale Medien
    Digitale Medien
    HPLC with carbohydrate carbamate chiral phases: Influence of chiral phase structure on enantioselectivity (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 6 (1994), S. 135-140 
    Details
    ISSN: 0899-0042
    Schlagwort(e): amylose ; cellulose ; phenylcarbamate ; 3,5-dimethylphenylcarbamate ; 3,5-dimethoxyphenylcarbamate ; trans-stilbene oxide ; chiral sulfoxides ; resolution ; Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The enantioselective resolution of trans-stilbene oxide and of 23 chiral sulfoxides was investigated on cellulose and amylose tris(arylcarbamate) stationary phases coated on aminopropylated 7 μm spherical silica with 500 Å diameter pores. Cellulose tris-(3,5 dimethylphenylcarbamate) showed good resolving power for many of the sulfoxides and amylose tris-(3,5 dimethoxyphenylcarbamate) showed advantages for the resolution of certain sulfoxides which were not separated on other phases. © 1994 Wiley-Liss, Inc.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/chir.530060214
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Enantiomeric resolution by HPLC of axial chiral amides using amylose tris[(S)-1-phenylethylcarbamate] (1997)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 9 (1997), S. 109-112 
    Details
    ISSN: 0899-0042
    Schlagwort(e): N-arylamides ; carbohydrate carbamate ; axial chirality ; Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The enantiomeric resolution of a series of N-arylamides was examined on amylose tris[(S)-1-phenylethylcarbamate] coated onto aminopropylated 7 μm silica with 500 Å diameter pores and on naked silica 5 μm particle size with 500 Å diameter pores. The enantiomeric resolution obtained for this series was excellent on both columns. The enantioselectivity of cellulose and amylose tris (3,5-dimethylphenylcarbamate) coated onto APS-Hypersil (120 Å pore size, 5 μm particle size) was also investigated for this series of compounds. Chirality 9:109-112, 1997. © 1997 Wiley-Liss, Inc.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Enantiomeric resolution of chiral sulfoxides on polysaccharide phases by HPLC (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 8 (1996), S. 147-152 
    Details
    ISSN: 0899-0042
    Schlagwort(e): amylose ; (S)-α-methylbenzyl carbamate ; chiral sulfoxides ; microporous silica ; polysaccharide phases ; Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The enantiomeric resolution of chiral sulfoxides was investigated on amylose (S)-α-methylbenzyl carbamate phase coated on aminopropylated 7 μm silica with 500Å diameter pores. This was shown to be very successful in the separation of alkyl/aryl, aryl/aryl, and non-aromatic sulfoxides. The effect of pore size using naked silica was also investigated, demonstrating that the pore size does not affect the resolution. © 1996 Wiley-Liss, Inc.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Preparative enantioseparation on polysaccharide phase using microporous silica as a support (1998)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 10 (1998), S. 573-577 
    Details
    ISSN: 0899-0042
    Schlagwort(e): hexahelicene ; sulphoxides ; carbohydrate carbamate ; chiral preparative ; silica ; Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The preparative enantiomeric resolutions of hexahelicen-7-yl acetic acid methyl ester and two sulphoxides were performed on cellulose tris(3,5-dimethylphenylcarbamate) coated onto aminopropylated 5-μm silica with 120-Å diameter pore. High enantiomeric purity was obtained for both enantiomers. The enantioselectivity of the amylose tris(3,5-dimethylphenylcarbamate), cellulose and amylose tris(phenylcarbamate) phases for the hexahelicen-7-yl acetic acid derivative were also investigated. Chirality 10:573-577, 1998. © 1998 Wiley-Liss, Inc.
    Zusätzliches Material: 7 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Chiral discrimination by HPLC on aryl carbamate derivatives of chitin coated onto microporous aminopropyl silica (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 8 (1996), S. 131-135 
    Details
    ISSN: 0899-0042
    Schlagwort(e): polysaccharides ; optical resolution ; phase loading ; racemic compounds ; Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: Optical resolution of a range of racemic compounds was investigated using bis(aryl carbamate) derivatives of chitin coated onto microporous organosilane-modified silica. The influence on chiral discrimination of factors such as the carbamate/support weight ratio, the nature of polysaccharide, and the influence of the aryl group substituents was investigated. The bis(3,5-dimethylphenyl carbamate) derivative of a noncommerical chitin gave the best results. © 1996 Wiley-Liss, Inc.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Carbohydrate carbamate coated onto microporous silica: Application to chiral analysis of commercial pharmaceutical drugs (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 8 (1996), S. 143-146 
    Details
    ISSN: 0899-0042
    Schlagwort(e): Cellulose tris-(3,5-dimethylphenyl carbamate) ; resolution ; tetramisole ; propanolol ; microporous APS-silica ; Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The enantioselectivity of a series of chiral analytes was examined on tris-(3,5-dimethylphenyl carbamate) coated onto microporous APS-silica. The effects of the nature of the carbohydrate, the weight ratio of carbamate/support and the type of alcohol present in the mobile phase were investigated. Among the chiral analytes examined, propanolol showed an extremely good resolution. The resolution of tetramisole was optimized and the method developed was shown to be suitable for analysis of the drug in commercial tablets and in a suspension. © 1996 Wiley-Liss, Inc.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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