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Total synthesis of (±)-karatavic acid: Structure confirmation of the first seco-drimane type sesquiterpenoid

✍ Scribed by Mugio Nishizawa; Hideyuki Takenaka; Yuji Hayashi

Publisher: Elsevier Science
Year: 1984
Tongue: French
Weight: 165 KB
Volume: 25
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)99905-2

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✦ Synopsis

One of the postulated structures of karatavic acid is confirmed via the total synthesis by means of the mercury(I1) triflate/amine complex-induced olefin cyclization and subsequent short step transformations. Stereochemistry of this new class of natural product is also established. Karatavic acid, C24H2805, was first isolated byBercutsky in 1936* from the root of Ferula karatavica (Umbelliferae), and three kinds of planer structures

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