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A facile construction of the tricyclic 5-7-6 scaffold of fungi-derived diterpenoids. The first total synthesis of (±)-heptemerone G and a new approach to Danishefsky’s intermediate for a guanacastepene A synthesis

✍ Scribed by Karol Michalak; Michał Michalak; Jerzy Wicha

Publisher: Elsevier Science
Year: 2010
Tongue: French
Weight: 413 KB
Volume: 51
Category: Article
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2010.06.064

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Progress towards the total synthesis of guanacastepene A. Approaches to the construction of quaternary carbons and the 5-7-6 tricyclic carbon skeleton

✍ Truc M. Nguyen; Daesung Lee 📂 Article 📅 2002 🏛 Elsevier Science 🌐 French ⚖ 74 KB

The construction of the 5-7-6 tricyclic skeleton of guanacastepene A, including the quaternary carbons, has been achieved. The C-11 and C-8 quaternary carbons were constructed by cuprate addition and carbene insertion, respectively. The 5-7-6 tricyclic core was generated by a selective aldol and SmI