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Priority claimed from GB430275Aexternal-prioritypatent/GB1490796A/en
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Publication of PT64748ApublicationCriticalpatent/PT64748A/en
Publication of PT64748BpublicationCriticalpatent/PT64748B/en
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Abstract
Pyrrolo 1,2-a imidazole derivs. of formula (I) and their acid addn. salts are new: (where R1,R2,R3 and R5 are H or 1-4C alkyl; Ar is opt. substd. aryl; R4 is H or 1-4C alkyl, or is a 1-3C alkylene group attached to the ortho posn. of the Ar ring), are antihypertensive agents of comparable activity to clonidin but with a lower sedative side-effect.