Novel benzothiazole and antirheumatic agent comprising it as an active ingredient
申请人:KANEBO, LTD.
公开号:EP0306708A1
公开(公告)日:1989-03-15
A benzothiazole of the following formula
in which R represents a methyl, methoxy, carboxyl or methoxycarbonyl group. The compound is useful for treating rheumatic arthritis.
A series of 2-(4-methylphenyl)benzothiazoles was synthesized and evaluated using an adjuvant-induced arthritic rat model. This calss of desired compounds affecting the immune response was found using hemagglutination assay.4-Acetoxy-2-(4-methylphenyl)benzothiazole (7m), KB-2683, was most potent in the adjuvant-induced arthritic rat model and selected for further evalution. In contrast to nonsteroidal antiinflammatory drugs, compound 7m showed no antiinflammatory or analgesic activities. It did, however, show an immunomodulatory activity in enhanced delayed type hypersensitivity.