N-(Arylthioalkyl)-N'-(aminoalkyl)ureas and thioureas and oxidation derivatives having the formula ##STR1## wherein B is thio, sulfinyl or sulfonyl; R.sup.1 and R.sup.2 are hydrogen, loweralkyl, cycloalkyl, 2-furanyl, phenyl, substituted phenyl or phenyl-loweralkyl and R.sup.3 and R.sup.4 are hydrogen, loweralkyl, phenyl or phenyl-loweralkyl wherein phenyl is optionally substituted, or R.sup.3 and R.sup.4 taken with the adjacent nitrogen form a heterocyclic residue. The compounds are useful in the treatment of cardiac arrhythmia.
N-(芳基
硫代烷基)-N'-(
氨基烷基)
脲和
硫脲以及具有公式##STR1##的氧化衍
生物,其中B是
硫、亚砜基或磺酰基;R1和R2是氢、较低烷基、环烷基、2-
呋喃基、苯基、取代苯基或苯基-较低烷基,R3和R4是氢、较低烷基、苯基或苯基-较低烷基,其中苯基可选择性地被取代,或R3和R4与相邻的氮形成杂环残基。这些化合物在治疗心律失常方面有用。