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Massarinolin A and purpurolides are bioactive bergamotane sesquiterpenes condensed with a variety of synthetically challenging ring systems: a bicyclo[3.1.1]heptane, an oxaspiro[3.4]octane, and a dioxaspiro[4.4]nonane (oxaspirolactone). Herein, we report the first enantioselective total syntheses of massarinolin A, purpurolides B, D, E, and 2,3‐deoxypurpurolide C. Our synthesis and computational analysis...
Massarinolin A und Purpurolide sind bioaktive Bergamotan‐Sesquiterpene mit einem komplexen tetrazyklischen Grundgerüst. In der Zuschrift auf S. 25032 berichten Mingji Dai und Mitarbeiter über einen divergenten und enantioselektiven Ansatz für die ersten Totalsynthesen von fünf tetracyclischen Bergamotan‐Sesquiterpenen, der außerdem zu einer Strukturrevision von Massarinolin A führte. Der Ansatz beinhaltet...
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