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- W4249797816 endingPage "5382" @default.
- W4249797816 startingPage "5376" @default.
- W4249797816 abstract "Abstract Of the more than 100 casbane diterpenes known to date, only the eponymous parent hydrocarbon casbene itself has ever been targeted by chemical synthesis. Outlined herein is a conceptually new approach that brings not a single but a variety of casbane derivatives into reach, especially the more highly oxygenated and arguably more relevant members of this family. The key design elements are a catalyst‐controlled intramolecular cyclopropanation with or without subsequent equilibration, chain extension of the resulting stereoisomeric cyclopropane building blocks by chemoselective hydroboration/cross‐coupling, and the efficient closure of the strained macrobicyclic framework by ring‐closing alkyne metathesis. A hydroxy‐directed catalytic trans ‐hydrostannation allows for late‐stage diversity. These virtues are manifested in the concise total syntheses of depressin, yuexiandajisu A, and ent ‐pekinenin C. The last compound turned out to be identical to euphorhylonal A, the structure of which had clearly been misassigned." @default.
- W4249797816 created "2022-05-12" @default.
- W4249797816 creator A5015419457 @default.
- W4249797816 creator A5020731520 @default.
- W4249797816 creator A5054667122 @default.
- W4249797816 date "2021-01-28" @default.
- W4249797816 modified "2023-10-07" @default.
- W4249797816 title "Collective Total Synthesis of Casbane Diterpenes: One Strategy, Multiple Targets" @default.
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