Importance

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Abstract

Novel imidazopyridine derivatives of formula: ##STR1## wherein, R represents an alkoxyalky radical having 4-6 carbon atoms or a benzyl radical optionally substituted by a halogen atom, an alkyl or alkoxy radical having up to 3 carbon atoms, X represents hydrogen or an alkyl radical having up to 3 carbon atoms, n represents 0 or 1 m represents an integer of from 2 to 5 inclusive, R.sub.1 and R.sub.2 may be the same or different and represent a saturated or unsaturated alkyl radical containing up to 4 carbon atoms or they, taken together with the adjacent nitrogen atom, may form a pyrrolidine, piperazine or homopiperazine ring which may be optionally substituted by an alkyl radical containing up to 3 carbon atoms, provided that when n is zero also m is zero and --N(R.sub.1)R.sub.2 represents the above defined piperazine or homopiperazine ring. The compounds (I) have an antihistaminic activity.

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First Claim