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Napoved fizikalno-kemijskih lastnosti in silico ter eksperimentalno vrednotenje cis/trans izomerizacije selektivnih zaviralcev butirilholin esteraze = In silico prediction of physicochemical properties and experimental evaluation of cis/trans isomerization of selective butyrylcholinesterase inhibitors : [magistrski študijski program Industrijska farmacija]Oblak, Jurij, farmacevtRaziskave na področju Alzheimerjeve bolezni (AB) in odkrivanju novih zdravilnih učinkovin v zadnjih letih močno napredujejo. Ob napredovanju AB se zviša koncentracija in aktivnost encima butirilholin ... esteraza (BChE), ki je v zadnjem desetletju postal zanimiva farmakološka tarča za blaženje kognitivnega upada v poznih stadijih bolezni. Namen magistrske naloge je bil, da po že razviti sintezni poti ponovimo sintezo najbolj perspektivnega zaviralca humane (h)BChE, njegovih cis in trans analogov, in silico vrednotimo fizikalno-kemijske in učinkovini podobne lastnost celotne serije zaviralcev ter da z NMR spektroskopijo preverimo izomerizacijo cis/trans dvojne vezi 2-fluorofenilnih analogov pod vplivom svetlobe. Po opisanih sinteznih postopkih z manjšimi modifikacijami smo uspešno opravili sintezo 2-fluorofenetilnega ter cis in trans 2-fluorofenilnih zaviralcev hBChE na gramski skali. Pripravljene spojine smo nato uporabili za vrednotenje izomerizacije cis/trans dvojne vezi s protonsko NMR spektroskopijo pod vplivom naravne sončne svetlobe ter pri obsevanju z živosrebrovo žarnico. Izomerizacijo cis/trans dvojne vezi bi lahko alternativno spremljali tudi z UHPLC metodo, ki smo jo razvili in je pod optimiziranimi kromatografskimi pogoji ločila cis (8) in trans (7) izomera 2-fluorofenilnih zaviralcev hBChE. Na podlagi NMR spektroskopije smo ugotovili, da je termodinamsko manj stabilen cis derivat 8 pod vplivom sončne svetlobe izomeriziral do trans derivata po 21 dneh v manj kot 5 % deležu, medtem ko je pri obsevanju z živosrebrovo žarnico v 14 dneh nastalo približno 10 % trans izomera. Pri in silico vrednotenju fizikalno-kemijskih in učinkovinam podobnim lastnosti lahko izpostavimo, da vse spojine ustrezajo kriterijem po Lipinskem in imajo ustrezne lastnosti za dobro prehajanje krvno-možganske pregrade, kar je pomembno za doseganje mesta delovanja ter zaviralcev. Serija spojin je tako zaradi svojih dobrih zaviralnih aktivnosti na encimu BChE in ustreznih fizikalno-kemijskih lastnosti dobra odskočna deska za nadaljnji razvoj in optimizacijo selektivnih zaviralcev hBChE.Type of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [J. Oblak], 2021Language - slovenianCOBISS.SI-ID - 69566979
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Faculty of Pharmacy, Ljubljana | Ljubljana | FFALJ |
reading room 1 cop.
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Oblak, Jurij, farmacevt | ![]() |
Pajk, Stane, 1983- | 28861 |
Knez, Damijan, farmacevt | 36438 |
Source: Personal bibliographies
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