abstract |
Described are compounds of the formula <IMAGE> wherein R1 and R2 are hydrogen, alkyl, cycloalkyl, and aryl, R3 is hydrogen or halogen, and R4 is hydrogen or acyl, and pharmaceutically acceptable acid addition salts thereof. R3 can be located in the 4 or 5 position as can the amino imidazoline group. The compounds are useful as anti-inflammatory agents. |