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Tetrahydroxy 10-membered cyclic enediynes

Klein, Michael ; Zabel, Manfred ; Bernhardt, Günther ; König, Burkhard



Abstract

The preparation of cyclic 10-membered tetrahydroxy enediynes is reported. The synthesis starts from tartaric acid and allows the control of the relative stereochemistry. Acetal protection of the 2,3-hydroxy groups stabilizes the enediyne during synthesis. Removal of the cyclic protecting group with EtSH/TFA transforms the stable compounds into reactive enediynes, and the rate constants of their ...

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