2-[[4-(phenylmethyl)piperazin-1-yl]methyl]-3,4-dihydro-2H-naphthalen-1-one 2-[[4-(phenylmethyl)piperazin-1-yl]methyl]tetralin-1-one 2-[[4-(phenylmethyl)-1-piperazinyl]methyl]-1-tetralinone 2-[[4-(benzyl)piperazin-1-yl]methyl]tetralin-1-one