Abstract |
In order to improve the chemical stability of prostaglanding E2 (2), prostaglanding E2 ethylene ketal (1) was prepred by direct ketalization of 2 with ethylene glycol in benzene. To establish a quantitative assessment of 1 as a chemically stable and orally active prodrug of 2, the hydrolysis of 1 to 2 and the subsequent dehydration of 2 to prostaglandin A2 (3) were followed at 25 degrees C and six pH's ranging from 2.0 to 6.5 by means of a high-pressure liquid chromatographic procedure. Kinetic results clearly indicate that 1 should be quantitively hydrolyzed back to the parent drug 2 dehydration of 2 to 3 are in the order of 1 h and 14 days, respectively. The preliminary data on the biological response after oral administration of 1 appeared to indicate the 1 is bioequivalent to 2.
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Authors | M J Cho, G L Bundy, J J Biermacher |
Journal | Journal of medicinal chemistry
(J Med Chem)
Vol. 20
Issue 11
Pg. 1525-7
(Nov 1977)
ISSN: 0022-2623 [Print] United States |
PMID | 410931
(Publication Type: Journal Article)
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Chemical References |
- Acetals
- Prostaglandins E, Synthetic
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Topics |
- Acetals
(chemical synthesis)
- Animals
- Biological Availability
- Chemical Phenomena
- Chemistry
- Chromatography, High Pressure Liquid
- Drug Stability
- Female
- Haplorhini
- Hydrolysis
- Kinetics
- Macaca mulatta
- Pregnancy
- Prostaglandins E, Synthetic
(chemical synthesis, pharmacology)
- Uterine Contraction
(drug effects)
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