Modern reversed-phase chromatography (RPC) has been widely applied to the separation of nucleobases, nucleosides and nucleotides. Long-chain oligo-and polynucleotides, which are valuable tools in the genetic engineering process, have become easily available because of the rapid developmental of auto
Reversed-phase high-performance liquid chromatographic separation of steroidal thiazoles
✍ Scribed by Pavel Drašar; Vladimír Pouzar; Ivan Černý; Miroslav Havel
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 225 KB
- Volume
- 283
- Category
- Article
- ISSN
- 1873-3778
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✦ Synopsis
Steroidal thiazoles of the 17/?-androstanyl-4-thiazole type are biologically and pharmaceutically important derivatives lw3. Members of this group show activities such as positive inotropic, cytotoxic and antimetabolic activity and inhibition activity ~3, NaK-ATPase.
In order to determine the residues of untransformed thiazoles in biological material we developed a high-performance liquid chromatographic method that allows the separation of these compounds and their determination, using UV-monitored Cl8 reversed-phase chromatography with a polar eluent.
EXPERIMENTAL
Apparatus and chromatography
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The reversed phase high performance liquid chromatographic (RP-HPLC) elution behavior of the basic esters and esterquats is discussed with data from indirect spectrophotometric detection. Three kinds of basic esters were synthesized by esterification of triethanolamine (TEA) with palmitic acid of th