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À propos de : Total Synthesis of Marine Sponge Bis(indole)Alkaloids of the Topsentin Class        

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  • Total Synthesis of Marine Sponge Bis(indole)Alkaloids of the Topsentin Class
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  • The synthesis of four natural bis(indole) alkaloids of topsentin class 1 and 2 is described. Their bis(indole) α-carbonylimidazoline and subsequently bis(indole) α-carbonylimidazole moieties have been built via the condensation betweenindolic α-ketothioimidate salts 4 and 1-(indol-3‘-yl)-1,2-diaminoethane 3. This compound results from the β-aminoindolic hydroxylamine 5 by a two-step sequence. This is thefirst total synthesis of compounds 1d, 2a, and 2b.
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