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Synfacts 2021; 17(10): 1073
DOI: 10.1055/s-0040-1720187
DOI: 10.1055/s-0040-1720187
Synthesis of Natural Products and Potential Drugs
Synthesis of (–)-Talatisamine and (–)-Liljestrandisine
Wong AR,
Fastuca NJ,
Mak VW,
Kerkovius JK,
Stevenson SM,
Reisman SE.
*
California Institute of Technology, Pasadena, USA
Total Syntheses of the C19 Diterpenoid Alkaloids (–)-Talatisamine, (–)-Liljestrandisine, and (–)-Liljestrandinine by a Fragment Coupling Approach.
ACS Cent. Sci. 2021;
7: 1311-1316
DOI: 10.1021/acscentsci.1c00540
Total Syntheses of the C19 Diterpenoid Alkaloids (–)-Talatisamine, (–)-Liljestrandisine, and (–)-Liljestrandinine by a Fragment Coupling Approach.
ACS Cent. Sci. 2021;
7: 1311-1316
DOI: 10.1021/acscentsci.1c00540
Key words
aconitine-type alkaloids - Giese reaction - semipinacol rearrangement - (–)-talatisamine - (–)-liljestrandisine
Significance
Reisman and co-workers report a convergent fragment coupling approach to the aconitine-type alkaloids (–)-talatisamine, (–)‑liljestrandisine, and (–)-liljestrandinine. The structure of (–)-liljestrandisine was revised.
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Comment
1,2-Addition of lithiated bromide H to ketone D gave I after in situ TMS protection. TMSNTf2 mediated the key semipinacol rearrangement that led to ketone K. This was elaborated to the full carbon skeleton of the natural product in 14 steps.
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Publikationsverlauf
Artikel online veröffentlicht:
17. September 2021
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