Enantiocontrolled total synthesis of the diterpenoids, triptoquinone B, C and triptocallol
β Scribed by Itsuki Yamamura; Yoko Fujiwara; Toshihiro Yamato; Osamu Irie; Kozo Shishido
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 263 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
An efficient and enantiocontrolled synthesis of triptoquinone B and C, which possess interleukin-1 inhibitory activity, has been accomplished employing the lipase-catalyzed kinetic resolution and a highly diastereoselective radical cyclization as key synthetic steps. In addition, the first total synthesis of hiptocallol has been achieved utilizing the same strategy.
π SIMILAR VOLUMES
Carnosic acid (XII) (1) is unusual among tricarbocyclic diterpenoidr in that its angular substituent is in an oxidation state higher than methyl. We wish to report the substantiation of its structure by total synthesis