Substituted benzopyran derivatives against arrhythmia

Details Substituted benzopyran derivatives against arrhythmia Substituted benzopyran derivatives against arrhythmia

2006-05-09

2006-05-09

Owens, Amelia A. (Department: 1625)

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

C549S466000, C549S467000

Reexamination Certificate

active

07041700

ABSTRACT:
This invention relates to benzopyran derivatives of the formula (1) or the formula (2) wherein R1and R2represent independently of each other hydrogen atom or C1-6alkyl group, R3represents hydroxyl group or C1-6alkylcarbonyloxy group, R4represents hydrogen atom or C1-6alkyl group, R5represents C1-6alkyl group substituted with C6-14aryl group or heteroaryl group, R6represents C1-6alkyl group, C1-6alkoxy group, halogen atom, nitro group, C(O)NH2, C(O)NHR8or C(O)NR8R9, or pharmaceutically acceptable salts thereof. These compounds are useful as an antiarrhythmic agent

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