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  • Title: Synthesis of tartaric acid analogues of FR258900 and their evaluation as glycogen phosphorylase inhibitors.
    Author: Varga G, Docsa T, Gergely P, Juhász L, Somsák L.
    Journal: Bioorg Med Chem Lett; 2013 Mar 15; 23(6):1789-92. PubMed ID: 23395662.
    Abstract:
    Di-O-cinnamoylated, -p-coumaroylated, and -feruloylated d-, l- and meso-tartaric acids were synthesized as analogues of the natural product FR258900, a glycogen phosphorylase (GP) inhibitor with in vivo antihyperglycaemic activity. The new compounds inhibited rabbit muscle GP in the low micromolar range, and bound to the allosteric site of the enzyme. The best inhibitor was 2,3-di-O-feruloyl meso-tartaric acid and had Ki values of 2.0μM against AMP (competitive) and 3.36μM against glucose-1-phosphate (non-competitive).
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