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À propos de : Establishing the Absolute Configuration of the Asbestinins: EnantioselectiveTotal Synthesis of 11-Acetoxy-4-deoxyasbestinin D        

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  • Establishing the Absolute Configuration of the Asbestinins: EnantioselectiveTotal Synthesis of 11-Acetoxy-4-deoxyasbestinin D
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  • A highly stereoselective synthesis of 11-acetoxy-4-deoxyasbestinin D (1) has been completed in 26 linear steps. The synthesis hinges on a selective glycolate aldol addition to establish the C-2 stereocenter, a ring-closing metathesis reaction to complete the oxonene, and an intramolecular Diels−Alder cycloaddition to establish the relative configuration at C-1, C-10, and C-14. This initial total synthesis of an asbestinin also serves to confirm the absolute configuration of this subclass of the C-2−C-11-cyclized cembranoid natural products.
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