En Route to Furan-Fused Naphthopyrones: Formal Synthesis of the (+)-Lasionectrin and Its C12-Epimer.
J Org Chem
; 88(24): 17409-17419, 2023 Dec 15.
Article
en En
| MEDLINE
| ID: mdl-38049195
Despite the vast presence of the furan-fused naphthopyrone (FFN) skeleton in many bioactive natural products, such as lasionectrin, at present, a general approach to FFNs has not been developed yet. For that reason, a simple and straightforward synthetic approach consisting of a sequential procedure of a Diels-Alder reaction between 1,3-dimethoxy-benzocyclobutenol I and furan-fused-α,ß-unsaturated-δ-lactones II (via an ο-quinodimethane intermediate III) followed by an oxidative aromatization of the corresponding Diels-Alder adduct IV is reported. Subsequently, the formal synthesis of the (+)-lasionectrin and its C12-epimer was achieved, the latter in only six steps.
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01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
J Org Chem
Año:
2023
Tipo del documento:
Article
Pais de publicación:
Estados Unidos