Indirect chiral separation and analyses in human biological fluids of the stereoisomers of a thienothiopyran-2-sulfonamide (TRUSOPT), a novel carbonic anhydrase inhibitor with two chiral centers in the molecule
| Autor: | M. L. Constanzer, B. K. Matuszewski |
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| Rok vydání: | 1992 |
| Předmět: |
inorganic chemicals
Stereochemistry Stereoisomerism Thiophenes Catalysis Analytical Chemistry chemistry.chemical_compound Drug Discovery Humans Molecule Carbonic Anhydrase Inhibitors Derivatization Chiral derivatizing agent Chromatography High Pressure Liquid Spectroscopy Pharmacology chemistry.chemical_classification Sulfonamides Chemistry organic chemicals Organic Chemistry Diastereomer Sulfonamide Evaluation Studies as Topic Racemic mixture Ophthalmic Solutions Enantiomer |
| Zdroj: | Chirality. 4:515-519 |
| ISSN: | 1520-636X 0899-0042 |
| DOI: | 10.1002/chir.530040810 |
| Popis: | The indirect chiral separation of the four stereoisomers (1)-(4) of a novel carbonic anhydrase inhibitor with two chiral centers in the molecule is reported. The method is based on chemical derivatization of the secondary amino group of the inhibitor with chiral isocyanate, formation of diastereomeric urea derivatives, each with three chiral centers in the molecule, and their separation under nonchiral HPLC conditions. The attempts to separate racemic mixture (1) + (2) from its diastereomeric counterpart (3) + (4) under nonchiral conditions, and to separate enantiomers (1) and (2) directly on a chiral stationary phase (CSP) are also reported. The indirect method was utilized for the assessment of an in vivo inversion of configuration at either one or both chiral centers of the molecule of (1). Analyses of selected whole blood and urine samples from human subjects after multiple bilateral topical ocular dosing with (1) did not reveal the presence of any of the three possible stereoisomers (2)-(4) of (1) indicating that the inversion of configuration at neither one nor two chiral centers of (1) occurs in vivo. |
| Databáze: | OpenAIRE |
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