The enantiomers of mexiletine and four of its hydroxylated metabolites were directly separated by capillary gas chromatography using a heptakis(6-0-tert-butyldimethylsilyl-2,3-di-O-methyl)-p-cyclodextrin column. The method was applied to the analysis of urine samples from cancer patients who were tr
Enantioselective capillary gas chromatography in the investigation of stereochemical correlations of terpenoids
✍ Scribed by Wilfried A. König
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 195 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0899-0042
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✦ Synopsis
Capillary gas chromatography employing the unique selectivities of specifically substituted cyclodextrins is highly suited for stereochemical investigations of terpenoid compounds. The analysis of many essential oils have shown that monoterpene derivatives regularly occur as enantiomeric mixtures. In the case of sesquiterpene hydrocarbons, liverworts (Hepaticae) and other lower organisms usually biosynthesize compounds of opposite stereochemistry as compared to higher plants and enantiomeric mixtures occur only occasionally. The investigation of diterpene hydrocarbons has so far shown no indication of the presence of both enantiomers in the same plant.
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