Tyrosinase inhibition: conformational analysis based studies on molecular dynamics calculations of bipiperidine based inhibitors.
Two series of variably N-substituted biperidines were synthesized by condensing various acid chlorides, alkyl halides and anhydrides with 1,4-bipiperidine. The new compounds were tested as tyrosinase inhibitors and a structure-activity relationship (SAR) study was carried out. Potent inhibition was observed in the case of the 4'-methylbenzyl substitution on this atom (IC50 = 1.72 microM) with this compound being a lead for future drug design. Additionally, calculations of the important QSAR molecular descriptors were done on the biperidine analogues after their 2 ps molecular dynamics (MD) simulations using molecular mechanics force field (MMFF) approaches. Using MD simulations potential and total energies were calculated for the energy minimized models of bipiperidine and the most active analogs 2, 3, 4, 6, 8 and 10.
Khan
Khalid M
KM
HEJ Research Institute of Chemistry, International Center for Chemical Sciences, University of Karachi, Karachi 75270, Pakistan. hassaan2@super.net.pk
Saify
Zafar S
ZS
Khan
Mahmud T H
MT
Butt
Naeem
N
Maharvi
Ghulam M
GM
Perveen
Shahnaz
S
Ambreen
Nida
N
Choudhary
Muhammad I
MI
Atta-Ur-Rahman
Supuran
Claudiu T
CT
D004791:Enzyme Inhibitors / Q000737:chemistry* / Q000494:pharmacology*; D007980:Levodopa / Q000378:metabolism; D008958:Models, Molecular; D015394:Molecular Structure; D014442:Monophenol Monooxygenase / Q000037:antagonists & inhibitors*; D010880:Piperidines / Q000737:chemistry* / Q000494:pharmacology*; D021281:Quantitative Structure-Activity Relationship; D013379:Substrate Specificity
D004791:Enzyme Inhibitors; D010880:Piperidines; D007980:Levodopa; D014442:Monophenol Monooxygenase