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Preparation of New Acetylcholinesterase Reactivators with an Amidoxime Functional Group and Their In Vitro Testing
Zemek, Filip ; Opletalová, Veronika (advisor) ; Jun, Daniel (referee)
1. SUMMARY Originally organophosphorus compounds were used as pesticides. Unfortunately, their irreversible inhibition of AChE was discovered, and they were widely misused as warfare agents. Presently, there is not a reactivator good enough to reverse completely irreversible inhibition of AChE. Thus, especially for military purposes, it is very important to look for better reactivators. As the reactivators can both reactivate inhibited AChE and inhibit the intact AChE, they have also been tested as potential therapeutics for Alzheimer's disease. New modification of oxime group with -NH2 was tried for better reactivation or inhibition results compared to widely used conventional drugs. Also monoquartenary and bisquartenary modifications were tested for possible improvement in activity. Wide range of substances was synthesized, which differed in homologous unit -CH2-. Thus substances with short aliphatic side chains, with partly hydrophilic properties, and those with long chains with mainly liphophilic properties as well as bisquarternary derivatives with various linking chains between two pyridininum centers were prepared and tested. Unfortunately these modifications did not prove to have any positive effect on activity or on inhibition. Some substances have shown mild reactivation possibility or inhibited...
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Preparation of New Acetylcholinesterase Reactivators with an Amidoxime Functional Group and Their In Vitro Testing
Zemek, Filip ; Opletalová, Veronika (advisor) ; Jun, Daniel (referee)
1. SUMMARY Originally organophosphorus compounds were used as pesticides. Unfortunately, their irreversible inhibition of AChE was discovered, and they were widely misused as warfare agents. Presently, there is not a reactivator good enough to reverse completely irreversible inhibition of AChE. Thus, especially for military purposes, it is very important to look for better reactivators. As the reactivators can both reactivate inhibited AChE and inhibit the intact AChE, they have also been tested as potential therapeutics for Alzheimer's disease. New modification of oxime group with -NH2 was tried for better reactivation or inhibition results compared to widely used conventional drugs. Also monoquartenary and bisquartenary modifications were tested for possible improvement in activity. Wide range of substances was synthesized, which differed in homologous unit -CH2-. Thus substances with short aliphatic side chains, with partly hydrophilic properties, and those with long chains with mainly liphophilic properties as well as bisquarternary derivatives with various linking chains between two pyridininum centers were prepared and tested. Unfortunately these modifications did not prove to have any positive effect on activity or on inhibition. Some substances have shown mild reactivation possibility or inhibited...
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