Abstract: A new piperidine compound is pharmacologically effective for treatment of the arrythmia and is defined by the formula: ##STR1## in which R.sup.1 is a lower alkyl or a tolyl, R.sup.2 is hydrogen, hydroxyl, a lower alkoxy or a lower alkyl, R.sup.3 is hydrogen, a lower alkyl, a lower alkenyl, a cycloalkyl or a cycloalkylalkyl, X is --CO--, --CH.sup.2 -- or --CHOH--, g is an integer of 1 to 3, h is an integer of 1 to 3, Y is hydrogen, a lower alkyl, a lower alkenyl, cyano, CH.sup.2 COOR, R being hydrogen or a lower alkyl, a cycloalkyl, a cycloalkylalkyl, ##STR2## 1 being 1 or 2, --A--B, A being --(CH.sub.2).sub.

Abstract: A piperidine compound has the generic formula and is useful to treat arrhythmia. ##STR1## in which R1 is a lower alkyl and W is: ##STR2## X is --S--, --SO-- or --SO2--, R2 is hydrogen or --(CH2)n--Y, n is an integer of 1 to 5, Y is an aryl, pyridyl or a substituted pyridyl, X' is --CO-- or --CH(OH)--,p is an integer of 1 to 4, R12 is hydrogen or a lower alkyl, Y' is --(CH2)m--A, m is 1 or 2, A is an aryl, a substituted aryl, pyridyl or a substituted pyridyl, R12 and Y may form a 5- or 6-membered ring or a 5- or 6-membered ring having one or more substituents andR22 is hydrogen, a halogen, a lower alkyl, a lower alkoxy or hydroxy.

Abstract: A new piperidine compound is pharmacologically effective for treatment of arrythmia and has the formula: ##STR1## in which R.sup.1 is lower alkyl or tolyl; R.sup.2 is hydrogen, lower alkyl, lower alkenyl, cycloalkyl or cycloalkylalkyl; X is --CO--, --CH.sub.2 -- or --CHOH--; the sum of g plus h equals the integer 3 or 4 with g and h being 1, 2 or 3; A is substituted or unsubstituted alkylene, alkenylene, --(CH.sub.2).sub.k --S--, wherein k is an integer of 2 to 5, or --(CH.sub.2).sub.p CO--, wherein p is an integer of 1 to 4; and B is a compound having at least one heterocyclic ring containing a nitrogen atom.

Abstract: A piperidine compound has the generic formula and is useful to treat arrhythmia. ##STR1## in which R1 is a lower alkyl and W is: ##STR2## X is --S--, --SO-- or --SO2--, R2 is hydrogen or --(CH2)n--Y, n is an integer of 1 to 5, Y is an aryl, pyridyl or a substituted pyridyl, X' is --CO-- or --CH(OH)--,p is an integer of 1 to 4, R12 is hydrogen or a lower alkyl, Y' is --(CH2)m--A, m is 1 or 2, A is an aryl, a substituted aryl, pyridyl or a substituted pyridyl, R12 and Y may form a 5- or 6-membered ring or a 5- or 6-membered ring having one or more substituents andR22 is hydrogen, a halogen, a lower alkyl, a lower alkoxy or hydroxy.

Abstract: A new piperidine compound is pharmacologically effective for treatment of the arrythmia and is defined by the formula: ##STR1## in which R.sup.1 is a lower alkyl or a tolyl, R.sup.2 is hydrogen, hydroxyl, a lower alkoxy or a lower alkyl, R.sup.3 is hydrogen, a lower alkyl, a lower alkenyl, a cycloalkyl or a cycloalkylalkyl, X is --CO--, --CH.sub.2 -- or --CHOH--, g is an integer of 1 to 3, h is an integer of 1 to 3, Y is hydrogen, a lower alkyl, a lower alkenyl, cyano, --CH.sub.2 COOR, R being hydrogen or a lower alkyl, a cycloalkyl, a cycloalkylalkyl, ##STR2## l being 1 or 2, --A--B, A being --(CH.sub.2).sub.

Abstract: A piperidine compound has the generic formula and is useful to treat arrhythmia. ##STR1## in which R.sup.1 is a lower alkyl and W is: ##STR2## X is --S--, --SO-- or --SO.sub.2 --, R.sup.2 is hydrogen or --(CH.sub.2).sub.n --Y, n is an integer of 1 to 5, Y is an aryl, pyridyl or a substituted pyridyl, X' is --CO-- or --CH(OH)--,p is an integer of 1 to 4, R.sup.12 is hydrogen or a lower alkyl, Y' is --(CH.sub.2).sub.m --A, m is 1 or 2, A is an aryl, a substituted aryl, pyridyl or a substituted pyridyl, R.sup.12 and Y may form a 5- or 6-membered ring or a 5- or 6-membered ring having one or more substituents andR.sup.22 is hydrogen, a halogen, a lower alkyl, a lower alkoxy or hydroxy.

Abstract: A new piperidine compound is pharmacologically effective for treatment of the arrythmia and is defined by the formula: ##STR1## in which R1 is a lower alkyl or a tolyl, R2 is hydrogen, hydroxyl, a lower alkoxy or a lower alkyl, R3 is hydrogen, a lower alkyl, a lower alkenyl, a cycloalkyl or a cycloalkylalkyl, X is --CO--, --CH2-- or --CHOH--, g is an integer of 1 to 3, h is an integer of 1 to 3, Y is hydrogen, a lower alkyl, a lower alkenyl, cyano, --CH2COOR, R being hydrogen or a lower alkyl, a cycloalkyl, a cycloalkylalkyl, ##STR2## 1 being 1 or 2, --A--B, A being --(CH2)n--, n being an integer of 1 to 5, a straight-chain alkylene group having 1 to 5 carbon atoms which is a divalent group derived from a straight-chain alkane having lower alkyl, phenyl or hydroxyl group(s) bonded directly to one or more carbon atoms constituting said alkane by removing a hydrogen atom bonded to each of the carbon atoms placed at both ends thereof,a straight-chain alkylene group having 1 to 5 carbon atoms which is a divalent