| 摘要 |
<p>Provided are pyridothienopyridazine compounds of the formula <IMAGE> wherein R1 is alkyl, alkenyl, alkynyl, halogen, nitro, cyano, carboxy, carboxyalkyl, carbalkoxy, alkanoyl, trihalomethyl, aryl, aralkyl, hetero, thio, thioalkyl, alkylmercapto, hydroxy, hydroxyalkyl, alkoxy, amino, aminoalkyl, alkylamino, sulfinyl, sulfonyl or methylenedioxy, n is an integer from 0 to 3 inclusive, and R2 and R3 are independently hydrogen, alkyl, alkenyl, alkinyl, hydroxy, hydroxyalkyl, alkoxy, halogen, amino, aminoalkyl, alkylamino, alkanoylamino, thio, thioalkyl, alkylmercapto, carboxy, carbalkoxy, alkylsulfinyl, alkylsulfonyl, arylsulfinyl, or arylsulfonyl, wherein the alkyl groups contain from 1 to 6 carbon atoms, the alkenyl and alkynyl groups contain from 2 to 6 carbon atoms, and the aryl groups contain from 6 to 10 carbon atoms. These compounds have anti-allergy activity.</p> |
