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J Pharm Sci ; 79(10): 913-5, 1990 Oct.
Article de Anglais | MEDLINE | ID: mdl-2280361

RÉSUMÉ

A novel antiasthmatic, 2-[(4-hydroxyphenyl)amino]-5-methoxybenzenemethanol (1), oxidizes to the corresponding iminoquinone in aqueous solutions. The reaction was monitored by a paired-ion reversed-phase HPLC method. The oxidation rate was highly dependent on the solution pH, with a large rate increase occurring above pH 6.1. In nonaqueous solution, the oxidation reaction was significantly slower. Ascorbic acid protects 1 from oxidation. The aqueous solution of the decomposed product is reduced to 1 in the presence of ascorbic acid.


Sujet(s)
Aminophénols/composition chimique , Acide ascorbique/composition chimique , Asthme/traitement médicamenteux , Alcools benzyliques/composition chimique , Chromatographie en phase liquide à haute performance , Concentration en ions d'hydrogène , Cinétique , Lactates/composition chimique , Oxydoréduction , Phosphates/composition chimique , Solutions , Spectrophotométrie UV , Sulfites
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