Application of the chemo- and enantioselective cyclopropanation of polyenes to the total synthesis of (+)-bicyclohumulenone
✍ Scribed by AndréB. Charette; Hélène Juteau
- Book ID
- 104208125
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 512 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0040-4020
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✦ Synopsis
The chemo-and enantioselective cyclopropanation of a monoprotected bis(allylic alcohol) using a chiral dioxaborolane-derived ligand and Zn(CH2I) 2 was used as a key step in the total synthesis of (+)-bicyclohumulenone. The synthesis of this important perfume component was efficiently accomplished in 16 steps from diethyl 3,3-dimethylglutarate in 9% overall yield.
📜 SIMILAR VOLUMES
At elevated temperature (refluxing THF) prenyl anion adds regio- and enantioselectively to aldehyde 1 when a chiral, borneol-derived ligand is present. This reaction is the key stepin the first total synthesis of the monoterpene (-)-rosiridol (retrosynthesis is shown on the right). In addition, the