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    グラヤノトキシンD環の化学修飾

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    Grayanotoxin (GTX), one of the lipid-soluble Na+ channel openers, contains four rings (A, B, C and D) and the chemical groups essential for the pharmacological action are located on the A- and B-rings. To study the biological significance of functional groups on the D-ring, 51 new derivatives were prepared from α-dihydro GTX- 11 . These new compounds and the previously prepared GTXS ere directly applied to the intracellular phase of internally perfused squid giant axons
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