407 KB41 KB199820252017de Lera Garrido, Fernando JuanGobec, StanislavGrabrijan, KatarinaJukič, MarkoKadić, SelmirObreza, AlešSosič, Izidorštevilka:4letnik:64str. 771-781ISSN:1580-3155COBISSID_HOST:4455537URN:URN:NBN:SI:doc-A79RAVF8enSlovensko kemijsko društvoActa chimica slovenicaamide dehydrationcovalent inhibitorscyclizationirreversible inhibitionoxathiazole-2-oneProteazethreonine proteaseChlorocarbonylsulfenyl chloride cyclizations towards piperidin-3-yl-oxathiazol-2-ones as potential covalent inhibitors of threonine proteases|Using rescaffolding approach, we designed piperidine compounds decorated with an electrophilic oxathiazol-2-one moiety that is known to confer selectivity towards threonine proteases. Our efforts to prepare products according to the published procedures were not successful. Furthermore we identified major side products containing nitrile functional group, resulting from carboxamide dehydration. We systematically optimized reaction conditions towards our desired products to identify heating of carboxamides with chlorocarbonylsulfenyl chloride and sodium carbonate as base in dioxane at 100 °C. Our efforts culminated in the preparation of a small series of piperidin-3-yl-oxathiazol-2-ones that are suitable for further biological evaluationZ zamenjavo molekulskega skeleta smo načrtovali spojine s piperidinskim jedrom, derivatiziranim z oksatiazol-2-onskim elektrofilnim centrom, ki omogoča selektivno zaviranje treoninskih proteaz. Sinteza produktov po postopkih, opisanih v literaturi, ni bila uspešna, poleg tega smo identificirali nitrile kot glavne stranske produkte, ki nastanejo pri dehidraciji karboksamidne funkcionalne skupine. S sistematično optimizacijo reakcijskih pogojev, smo s segrevanjem karboksamidov, klorokarbonilsulfenil klorida in natrijevega karbonata kot baze v dioksanu pri 100 °C pripravili serijo piperidin-3-il-oksatiazol-2-onov, primerno za nadaljnje biološko vrednotenjeTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaSlovensko kemijsko društvo