Antihistaminic imidazoles

Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Parasitic organism or component thereof or substance...

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4242484, 42424854, 42424857, 42424858, 424272, 424273R, 542470, 544 63, 544 96, 544139, 546210, 548215, 548336, 548342, 548343, 564246, 564276, A61K 31445, C07D23364

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active

043247920

ABSTRACT:
The present invention provides compounds of the general formula (I) ##STR1## and physiologically acceptable salts and bioprecursors thereof in which ##STR2## represents either ##STR3## R.sup.1 represents hydrogen, halogen, C.sub.1-4 alkoxy, hydroxy, alkyl, R.sup.4 CH(OH)--, cyano or R.sup.5 CONH--, R.sup.2 and R.sup.3, which may be the same or different, each represents a straight or branched chain alkyl group or alkenyl group or R.sup.2 and R.sup.3 may, together with the nitrogen atom to which they are attached, form a saturated heterocyclic ring containing from 5 to 7 members which may optionally contain an oxygen atom; R.sup.4 represents hydrogen or alkyl; and R.sup.5 represents hydrogen, alkyl or C.sub.1-4 alkoxy. The compounds have been shown to exhibit H.sub.1 -antagonist activity in standard pharmacological tests.

REFERENCES:
patent: 2532547 (1950-12-01), Goldberg et al.
patent: 3953460 (1976-04-01), Durant et al.
patent: 4152443 (1979-05-01), Durant et al.
Labelle, A., et al., J. Pharm. Exp. Ther., 113, 72-88, (1955).
Merck Index, Ninth Edition, p. 279.

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