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Optimizacija reakcije Suzuki-Miyaura v sintezi 4-aril-6-trifluorometilpirimidinskih antagonistov Tollu podobnega receptorja 8 = Optimization of Suzuki-Miyaura reaction in the synthesis of 4-aryl-6-trifluoromethylpyrimidine antagonists of Toll-like receptor 8 : Master's Study Programme Industrial PharmacyMrgole, KristjanReakcije Suzuki-Miyaura so ene izmed najpogosteje uporabljenih reakcij v organski kemiji, pri kateri pride do tvorbe ogljik-ogljik vezi s pomočjo kovinskega katalizatorja. Prednosti teh tipov reakcij ... so predvsem mili pogoji, neobčutljivost boronske kisline na vodo in zrak ter dober prenos laboratorijske metode na industrijski nivo. Optimizacija parametrov je tako ključni del načrtovanja reakcije, ki zagotavlja uspešnost in visok izkoristek posamezne sinteze. V sklopu magistrske naloge smo optimizirali reakcijo Suzuki-Miyaura na 2,4-dikloropirimidinu za nadaljnjo sintezo 4-aril-6-trifluorometilpirimidinskih potencialnih antagonistov Tollu podobnega receptorja 8 (TLR8). V začetku procesa optimizacije metode smo izbrali najbolj optimalno topilo, s katerim smo kasneje izvedli serijo reakcij z uporabo različnih katalizatorjev. Katalizatorju, ki je izkazoval najvišji izkoristek reakcije, smo določili najmanjšo količino, ki še zadošča za visok izkoristek, nato pa optimizirali še temperaturo same reakcije. Pri končni optimizirani metodi smo uporabili 1,4-dioksan kot topilo, 3 mol % katalizatorja tetrakis(trifenilfosfin) paladija(0) relativno na vstopni reaktant 2,4-dikloropirimidin pri temperaturi reakcije 90 %C. Optimizirano metodo reakcije smo prenesli na 1. stopnjo sinteze potencialnih antagonistov TLR8, kjer se je izkazala kot učinkovita metoda za pripravo intermediata 2-kloro-4-fenil-6-(trifluorometil)pirimidina (1), medtem ko se pri sintezi 2-kloro-4-(furan-3-il)-6-(trifluorometil)pirimidina (2) ni izkazala kot najučinkovitejša metoda, saj je bil izkoristek nižji od pričakovanega. Intermediatoma 1 in 2 smo v nadaljevanju sinteze dodali 2-tiofenilmetilamin, da smo dobili končna produkta 4-fenil-N-(tiofen-2-ilmetil)-6-(trifluorometil)pirimidin-2-amin (3) in 4-(furan-3-il)-N-(tiofen-2-ilmetil)-6-(trifluorometil)pirimidin-2-amin (4), ki smo ju poslali na biokemijsko vrednotenje TLR8 antagonističnega delovanja. Preliminarni rezultati testiranj so pokazali, da spojina 3 izkazuje antagonistično delovanje na TLR8, medtem ko je spojina 4 še v fazi testiranj.Type of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [K. Mrgole], 2020Language - slovenianCOBISS.SI-ID - 42273027
Author
Mrgole, Kristjan
Other authors
Sova, Matej, 1979-
Topics
Organska kemija |
reakcija Suzuki-Miyaura |
optimizacija |
katalizatorji |
TLR8 |
antagonisti
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Library | Call number – location, accession no. ... | Copy status |
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Faculty of Pharmacy, Lj. | Knjižnica mind 547 MRGOLE KRISTJAN Optimizacija IN: 0016943 |
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Mrgole, Kristjan | ![]() |
Sova, Matej, 1979- | 25490 |
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