| 摘要 |
Novel pyrazolobenzoxazines of the formula <IMAGE> I wherein R is selected from the group consisting of hydrogen, alkyl of 1 to 5 carbon atoms, cycloalkylalkyl or 4 to 7 carbon atoms, alkenyl and alkynyl of 3 to 5 carbon atoms with the proviso that the multiple bond is not between the carbon alpha - and beta - to the nitrogen atom, aralkyl of 7 to 12 carbon atoms and aralkyl of 7 to 12 carbon atoms substituted with at least one member of the group consisting of alkyl and alkoxy of 1 to 5 carbon atoms, amino, -OH and halogen, X is selected from the group consisting of hydrogen and -CH2-S-Alk, Alk is alkyl of 1 to 5 carbon atoms, the wavy line indicates the alpha - or beta -position and their non-toxic, pharmaceutically acceptable acid addition salts having dopaminergic agonistic, hypotensive, antihypertensive and antianoxic properties and their preparation.
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