BENZOPYRAN DERIVATIVE AND ANTIALLERGIC AGENT CONTAINING THE SAME AS ACTIVE INGREDIENT
申请人:DAINIPPON INK AND CHEMICALS, INC.
公开号:EP0598117A1
公开(公告)日:1994-05-25
An antiallergic agent with a low toxicity and an excellent efficacy, containing a benzopyran derivative represented by general formula (I) as the active ingredient, wherein R¹ and R² represent each hydrogen, acyl, C₁ to C₁₂ alkyl or C₂ to C₁₀ alkenyl; and R³ represents hydroxy, acyloxy, C₁ to C₁₀ alkoxy or C₂ to C₁₀ alkenyloxy.
Benzopyran derivatives and an anti-allergic agent possessing the same as
申请人:Dainippon Ink & Chemicals, Inc.
公开号:US05428059A1
公开(公告)日:1995-06-27
The present invention relates to an extremely effective anti-allergic agent with a low toxicity, which possesses as its active ingredient a benzopyran derivative described by the general formula below (in the formula, R.sup.1 and R.sup.2 are each respectively a hydrogen atom, an acyl group, an alkyl group having 1.about.12 carbon atoms, or an alkenyl group having 2.about.10 carbon atoms; and R.sup.3 is a hydroxyl group, an acyloxy group, an alkoxy group having 1.about.10 carbon atoms, or an alkenyloxy group having 2.about.10 carbon atoms). General Formula ##STR1##