Abstract
Several novel bioreversible redox derivatives of the nonsteroida, antinflammatory drugs (NSAID) naproxen and indomethacin were synthesized. The stability of these dihydropyridine-NSAID derivatives their synthetic precursors, and predicted products of oxidative metabolism, the corresponding pyridinium salts, was determined in buffer, human and rat blood, and rat organ homogenate. The dihydropyridines exhibited the expected stability profiles in the media examined: oxidation, water addition, and/or ester hydrolysis. The corresponding pyridinium salts were quite stable in biomedia. ester hydrolysis being the primary route of decomposition. The results of this study may be useful in selecting suitable candidates for selective delivery of naproxen and indomethacin across the blood-brain barrier.
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