| abstract |
Compounds of the formula:-n and their salts, nwhere R is -NHSO₂(C₁-C₄ alkyl), -NH₂ or -NO₂; n R¹ is C₁-C₄ alkyl; nand "Het" is a group of the formula:-n where R² is H, CH₃ or C₂H₅; n R³ is -NHSO₂(C₁-C₄ alkyl), -NH₂ or -NO₂; nand X is O, S or NR⁴ where R⁴ is H or CH₃; nwith the proviso that when one of R and R³ is -NO₂, then the other is not -NH₂. n The compounds of the formula (A) in which both R and R³ are -NHSO₂(C₁-C₄ alkyl) are antiarrhythmic agents. The reamining compounds of the formula (A) are synthetic intermediates. |