Benzazole derivatives, processes for their preparation containin

Details Benzazole derivatives, processes for their preparation containin Benzazole derivatives, processes for their preparation containin

1992-10-06

1993-09-21

Shah, Mukund J.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Heterocyclic carbon compounds containing a hetero ring...

5142282, 5142338, 514252, 514255, 514321, 514367, 514369, 514375, 540480, 540603, 544 587, 544135, 544369, 546198, 548178, 548188, 548217, C07D26354, C07D27764, A61K 31495, A61K 3142

Patent

active

052469271

ABSTRACT:
The invention relates to new benzazole derivatives of the formula I ##STR1## wherein X is oxygen or sulphur, R.sub.1 is lower alkyl, lower alkenyl or cycloalkyl, R.sub.2 and R.sub.3 independently of one another are each hydrogen, lower alkyl or cycloalkyl radicals or taken together are a substituted or unsubstituted bivalent hydrocarbon residue of aliphatic character in which the carbon atoms of the chain may be interrupted by a heteroatom, R.sub.4 is either a group ##STR2## wherein R.sub.5 and R.sub.6 independently of one another are lower alkyl or cycloalkyl radicals, optionally substituted, or taken together R.sub.5 and R.sub.6 are a substituted or unsubstituted bivalent hydrocarbon residue of aliphatic character in which the carbon atoms of the chain may be interrupted by a heteroatom, or, R.sub.4 is a group ##STR3## where R.sub.7 is a lower alkyl group, and their salts and N-oxides. The products are useful as anthelmintic effective agents. The products can be prepared to methods known per se.

REFERENCES:
patent: 3934017 (1976-01-01), Gallay et al.
patent: 4511567 (1985-04-01), Galley et al.
patent: 4649149 (1987-05-01), Galley
patent: 4680301 (1987-07-01), Rao
J. Med Chem 25:8 969 (1982).

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