| 摘要 |
The invention relates to compounds with the formula <IMAGE> and salts thereof, where each R is identical and denotes -NHSO2(C1-4 alkyl), -NH2 or -NO2; X is O or a direct bond; R1 is H, C1-4 alkyl, C1-4 alkoxy or halogen and n is 1 or 2, provided that when X is O, n should be 2. The compounds with formula (A) in which each R is -NHSO2(C1-4 alkyl) are anti-arrhythmic agents. The compounds in which R is -NH2 or -NO2 are intermediates in the synthesis.
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