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Title:Epimerizacija ergot alkaloidov in brom-ergot alkaloidov
Authors:ID Kladnik, Peter (Author)
ID Krajnc, Peter (Mentor) More about this mentor... New window
ID Paljevac, Muzafera (Comentor)
Files:.pdf VS_Kladnik_Peter_2016.pdf (2,03 MB)
MD5: 3BE6A87B2D4274783B01DC3161EAB301
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Prvi zapisi o ergot alkaloidih in njihovih učinkih segajo že v 7. stoletje pr. n. š., njihovo raziskovanje in odkrivanje pa je doživelo razcvet v 20. stoletju. V medicini se uporabljajo kot sredstva proti migreni, pri zdravljenju Parkinsonove bolezni, kot zdravilo za preprečevanje laktacije, kot agonisti dopamina in drugo. Ergot alkaloidi in brom-ergot alkaloidi obstajajo kot levosučni in desnosučni epimeri. V našem primeru veljajo desnosučni za nezaželene. Desnosučne pretvorimo v levosučne s postopkom epimerizacije, ki poteka prek izolacije soli s kislinami. Cilj diplomskega dela je določiti ustrezno kislino, topilo in procesne pogoje pri postopku epimerizacije ergot alkaloidov in brom-ergot alkaloidov iz desnosučnih v levosučne. Na podlagi analitskih rezultatov, izkoristka in trajanja epimerizacije smo pri ergot alkaloidih kot najustreznejši določili postopek, kjer smo uporabili fosforjevo (V) kislino, za topilo etanol, epimerizacija pa je trajala 24 ur. Pri epimerizaciji brom-ergot alkaloidov pa se je za najprimernejšo izkazala metansulfonska kislina, za topilo etanol in čas epimerizacije 48 ur.
Keywords:epimerizacija, ergot alkaloid, brom-ergot alkaloid, levosučni, desnosučni
Place of publishing:Maribor
Publisher:[P. Kladnik]
Year of publishing:2016
PID:20.500.12556/DKUM-61958 New window
UDC:547.945.1(043.2)
COBISS.SI-ID:20313622 New window
NUK URN:URN:SI:UM:DK:UT6RGS90
Publication date in DKUM:16.09.2016
Views:1694
Downloads:139
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Secondary language

Language:English
Title:Epimerization of ergot alkaloids and brom-ergot alkaloids
Abstract:The first records of ergot alkaloids and their effects date back to the 7th century BC. Their exploration and discovery peaked in the 20th century. In medicine they are used as antimigraine agents and for treating Parkinson's disease, as a drug for lactation suppression, as dopamine agonists etc. Ergot alkaloids and brom-ergot alkaloids exist in R- or S-form of epimers. In our case, the S-form is undesirable. S-form epimers can be transformed into R-form epimers through epimerization passing through salt isolation with acids. The aim of this study is to determine the appropriate acid, solvent and process conditions in the epimerization process of ergot alkaloids and brom-ergot alkaloids from S-form to R-form. Based on the analytical results, efficiency and duration of ergot alkaloid epimerization, we found that the most appropriate method is to use phosphoric (V) acid, with ethanol as the solvent and epimerization lasting for 24 hours. Methanesulfonic acid proved to be the most appropriate for epimerisation of brom-ergot alkaloids, with ethanol as the solvent and epimerization time of 48 hours.
Keywords:epimerization, ergot alkaloids, brom-ergot alkaloids, R-form, S-form


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