Total Syntheses of (−)-Englerins A/B, (+)-Orientalols E/F, and (−)-Oxyphyllol
(−)-Englerin A was synthesized in 20 steps from the commercially available material (R)-(+)-limonene. In addition, (−)-englerin B, (+)-orientalol E/F and (−)-oxyphyllol were obtained from the intermediate in the route. The key steps include a hydroxyl-directing stereoselective and regioselective int...
Gespeichert in:
Veröffentlicht in: | Organic letters 2018-05, Vol.20 (9), p.2517-2521 |
---|---|
Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | (−)-Englerin A was synthesized in 20 steps from the commercially available material (R)-(+)-limonene. In addition, (−)-englerin B, (+)-orientalol E/F and (−)-oxyphyllol were obtained from the intermediate in the route. The key steps include a hydroxyl-directing stereoselective and regioselective intramolecular cyclopropanation and a multi-gram-scale stereoselective formal intramolecular [3 + 2] cross cycloaddition ([3 + 2]-IMCC) of a cyclopropane 1,1-diester with a carbonyl. A precursor of 7,10-diastereoisomer of englerins was also obtained. |
---|---|
ISSN: | 1523-7060 1523-7052 |
DOI: | 10.1021/acs.orglett.8b00552 |