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  • Title: Synthesis of novel N-alkyl carbamates of a-substituted amides of g-hydroxybutyric acid as potential acetylcholinesterase inhibitors.
    Author: Musiał A, Malawska B.
    Journal: Acta Pol Pharm; 2004 Dec; 61 Suppl():94-7. PubMed ID: 15909954.
    Abstract:
    In a search for new acetylcholinesterase (AChE) inhibitors, derivatives of N-alkyl carbamates of a-substituted N-benzylamides of g-hydroxybutyric acid (GHB) 2(a-d); 3(a-d); 4(a-d) were obtained. Starting from 3-bromo-tetrahydrofuran-2-one, and N-phenylpiperazine 3-(4-phenylpiperazin-1-yl) tetrahydrofuran-2-one (1) was obtained. The aminolysis of lactone 1 with 4-substituted derivatives of benzylamine yielded N-substituted benzylamides of a-(4-phenylpiperazin-1-yl)-g-hydroxy-butyric acid (2-4). The target compounds were prepared by refluxing N-substituted benzyl-amides of a-(4-phenylpiperazinyl-1-)-GHB with ethyl-, i-propyl-, n-propyl- or n-butyl-isocyanate in dry acetonitrile. The inhibitory potency of AChE was evaluated by means of Ellman's in vitro test.
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