A compound which is selected from the group consisting of: 1 -Benzenesulfonyl-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(4-Bromobenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(2-Bromo-4-methoxybenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-[4-(1 -Methylethyl) benzenesulfonyl]-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(2-Bromobenzenesulfonyl)-4-(4-methylpiperazin-1-yl methyl)-1H-indole; 1-(4-Fluorobenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(4-Methoxybenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 1-(3-Fluorobenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1 -(2,4-Difluoro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 1-(5-Bromo-2-methoxy benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 1-(2-Chlorobenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(2,6-Difluoro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(2,6-Dichloro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(2-Chloro-4-fluoro bezenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 1-Benzenesulfonyl-3-bromo-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 3-Bromo-1-(2-Bromo-4-methoxybenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 3-Bromo-1-[4-(l-Methylethyl) benzenesulfonyl]-4-(4-methylpiperazin-l-ylmethyl)-lH-indole; 3-Bromo-1-(4-methyl benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 3-Bromo-1-(4-fluorobenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 3-Bromo-1-(4-methoxy benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 3 -Bromo-1-(3-chloro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 3-Bromo-1-(5-chloro-2-methoxy-4-methylbenzenesulfonyl)-4-(4-methylpiperazin-1-ylraethyl)- 1H-indole; 3-Chloro-1-benzenesulfonyl-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 3-Chloro-1-[4-(1-methylethyl) benzenesulfonyl]-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 3-Chloro-1-(4-methyl benzenesulfonyl)-4-(4-methylpiperazin-l-ylmethyl)-1H-indole; 3-Chloro-1-(2-bromo benzenesulfonyl)-4-(4-methylpiperazin-l-ylmethyl)-1H-indole; 3-Chloro-1-(4-fluoro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 3-Chloro-1-(4-methoxy benzenesulfonyl)-4-(4-methylpiperazin-l-ylmethyl)-lH-indole; 3-Chloro-1-(3-chloro benzenesulfonyl)-4-(4-methylpiperazin-l-ylmethyl)-1H-indole; 3-Chloro-1-(5-chloro-2-methoxy-4-methyl benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 1-(2,4-Dichloro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 1-(3-chloro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; and a salt thereof. 1 -Benzenesulfonyl-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(4-Bromobenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(2-Bromo-4-methoxybenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-[4-(1 -Methylethyl) benzenesulfonyl]-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(2-Bromobenzenesulfonyl)-4-(4-methylpiperazin-1-yl methyl)-1H-indole; 1-(4-Fluorobenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(4-Methoxybenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 1-(3-Fluorobenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1 -(2,4-Difluoro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 1-(5-Bromo-2-methoxy benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 1-(2-Chlorobenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(2,6-Difluoro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(2,6-Dichloro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 1-(2-Chloro-4-fluoro bezenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 1-Benzenesulfonyl-3-bromo-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 3-Bromo-1-(2-Bromo-4-methoxybenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 3-Bromo-1-[4-(l-Methylethyl) benzenesulfonyl]-4-(4-methylpiperazin-l-ylmethyl)-lH-indole; 3-Bromo-1-(4-methyl benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 3-Bromo-1-(4-fluorobenzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 3-Bromo-1-(4-methoxy benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 3 -Bromo-1-(3-chloro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 3-Bromo-1-(5-chloro-2-methoxy-4-methylbenzenesulfonyl)-4-(4-methylpiperazin-1-ylraethyl)- 1H-indole; 3-Chloro-1-benzenesulfonyl-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 3-Chloro-1-[4-(1-methylethyl) benzenesulfonyl]-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 3-Chloro-1-(4-methyl benzenesulfonyl)-4-(4-methylpiperazin-l-ylmethyl)-1H-indole; 3-Chloro-1-(2-bromo benzenesulfonyl)-4-(4-methylpiperazin-l-ylmethyl)-1H-indole; 3-Chloro-1-(4-fluoro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1H-indole; 3-Chloro-1-(4-methoxy benzenesulfonyl)-4-(4-methylpiperazin-l-ylmethyl)-lH-indole; 3-Chloro-1-(3-chloro benzenesulfonyl)-4-(4-methylpiperazin-l-ylmethyl)-1H-indole; 3-Chloro-1-(5-chloro-2-methoxy-4-methyl benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 1-(2,4-Dichloro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole; 1-(3-chloro benzenesulfonyl)-4-(4-methylpiperazin-1-ylmethyl)-1 H-indole;