Some bromo phenyl piperidine derivatives having plasmepsin inhibition along with potent analgesia

The present study was conducted to evaluate the synthesized 4-(4′-bromophenyl)-4-hydroxy piperdine derivatives for plasmepsin inhibition (antimalarial activity) and analgesic response to develop excellent moiety to work in malaria. the plasmepsin ii and cathepsin d (biodesign international,usa) assays were measured using a fluorescence resonance energy transfer (fret) mthod. the inhibition of enzyme was done (in triplicates) in 96 well plate format and response were obtained on a perkin elmer ls55 fluorescence spectrometer with an excitation and emission wavelengths of 336 and 490 nm,respectively and analgesic activity of synthesized derivatives of 4-(4′-bromophenyl)-4-hydroxy piperidine was conducted by eddy's hot plate method in albino mice by providing standard colony conditions using pethidine as standard drug. these novel compounds having the parent moiety 4-(4′-bromophenyl)-4-hydroxy piperdine were found to prove strong inhibition towards plasmepsin enzyme with 8-10 ic50 in μm and highly significant analgesic response in albino mice. the current studies suggest that the designed molecules were found to work both on cellular level and also on the symptoms of disease as the headache,fever and muscle aches are the very common and initial symptoms associated with malaria and hence the molecules discovered as excellent analgesics. © 2016,chemical society of pakistan. all rights reserved.