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Die chemische Struktur von (−)‐Isoscopariusin A (oben), isoliert aus Isodon scoparius, ist vor dem Hintergrund der Weißwasser‐Terrassen (Baishuitai), der Heimatregion der Art in der Provinz Yunnan in China, dargestellt. Im Einschub sind die Blüten und Blätter von Isodon scoparius zu sehen. Auf der rechten Seite ist Sclareolid als Ausgangsmaterial dargestellt. Details zur chemischen Synthese von (−)‐Isoscopariusin...
(−)‐Isoscopariusin A was isolated from the aerial parts of Isodon scoparius. Chemical synthesis and spectroscopic analysis established its structure as an unsymmetrical meroditerpenoid bearing a sterically congested 6/6/4 tricyclic carbon skeleton with seven continuous stereocenters. A gram‐scale synthesis was achieved in 12 steps from commercially available (+)‐sclareolide. A cobalt catalyzed, hydrogen...
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