1.
Org Lett
; 18(8): 1740-3, 2016 Apr 15.
Artículo
en Inglés
| MEDLINE
| ID: mdl-27023166
RESUMEN
Bisavenanthramide B-6 (2) is a highly substituted γ-lactam derived from oat leaves. Development of a new base-promoted anhydride Mannich reaction with N-sulfonylated imines that forms the core structure of 2 in a single step is presented. Further elaboration allows for a facile one-pot double Buchwald N-arylation to install the final rings onto the densely substituted γ-lactam core. This route provides the natural product in a longest linear sequence of nine steps.