Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 60, Issue 28, Pages 15286-15290Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202104182
Keywords
asymmetric synthesis; cyclization; meroterpenoid; natural products; total synthesis
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Funding
- National Key R&D Program of China [2019YFA0905700]
- National Major Scientific and Technological Special Project for New Drugs Development [2019ZX09301-112]
- Major Basic Research Program of Shandong Provincial Natural Science Foundation [ZR2019ZD26]
- National Natural Science Foundation of China [81874293, 81903505]
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An enantioselective synthetic approach for preparing manginoids and guignardones, two types of biogenetically related meroterpenoids, is described in this study. The bioinspired and divergent synthesis involves an oxidative 1,3-dicarbonyl radical-initiated cyclization and cyclodehydration of a common precursor to forge the central ring of the manginoids and guignardones. Key synthetic steps include silica-gel-promoted semipinacol rearrangement and the Suzuki-Miyaura reaction of vinyl bromide for fragment coupling, enabling the asymmetric syntheses of four fungal meroterpenoids from commercially available materials.
An enantioselective synthetic approach for preparing manginoids and guignardones, two types of biogenetically related meroterpenoids, is reported. This bioinspired and divergent synthesis employs an oxidative 1,3-dicarbonyl radical-initiated cyclization and cyclodehydration of the common precursor to forge the central ring of the manginoids and guignardones, respectively, at a late stage. Key synthetic steps include silica-gel-promoted semipinacol rearrangement to form the 6-oxabicyclo[3.2.1]octane skeleton and the Suzuki-Miyaura reaction of vinyl bromide to achieve fragment coupling. This synthesis protocol enables the asymmetric syntheses of four fungal meroterpenoids from commercially available materials.
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