Abstract
Four out of the five rings of the alkaloid neotuberostemonine (1) are present in the advanced precursor 2. The tetracyclic compound 2 has now been prepared in a short, linear route via lactone acid 3. A key step in the synthesis was the cuprate-mediated SN2′ ring-opening desymmetrization of the C2-symmetric bislactone 4.
Translated title of the contribution | A Rapid Stereocontrolled Entry to the ABCD Tetracyclic Core of Neotuberostemonine |
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Original language | English |
Pages (from-to) | 1642-1644 |
Number of pages | 3 |
Journal | Angewandte Chemie - International Edition |
Volume | 42 |
Issue number | 14 |
DOIs | |
Publication status | Published - 11 Apr 2003 |
Bibliographical note
Publisher: WileyKeywords
- Asymmetric synthesis
- Cuprates
- Lactones
- Natural products
- Photocyclization
- Total synthesis