1,3,4-Oxadiazole Antibacterial activity 3 Article 2 Ethyl isonipecotate 2 IC50 2 Piperidine 2 Sulfonamide 2 carbon nuclear magnetic resonance 2 drug synthesis 2 proton nuclear magnetic resonance 2 thin layer chromatography 2 unclassified drug 2 1 [(4 chlorophenyl)sulfonyl]piperidin 4 carbohydrazide 1 5 (1 [(4 methylphenyl)sulfonyl] 4 piperidinyl) 1,3,4 oxadiazole 2 thiol 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 (allylthio) 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 (benzylthio) 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 (ethylthio) 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 [(1 butyl)thio] 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 [(1 heptyl)thio] 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 [(1 octyl)thio] 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 [(1 pentyl)thio] 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 [(1 propyl)thio] 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 [(1,3 dioxalan 2 ylmethyl)thio] 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 [(2 bromobenzyl)thio] 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 [(2 bromoethyl)thio] 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 [(2 butyl)thio] 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 [(2 chlorobenzyl)thio] 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 [(2 chloroethyl)thio] 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 [(2 iodoethyl)thio] 1,3,4 oxadiazole 1 5 {1 [(4 chlorophenyl)sulfonyl]piperidin 4 yl} 2 [(2 methylbenzyl)thio] 1,3,4 oxadiazole 1