1.
J Am Chem Soc
; 131(32): 11402-6, 2009 Aug 19.
Artigo
em Inglês
| MEDLINE
| ID: mdl-19624126
RESUMO
Total syntheses of the morphine alkaloids are described that use a direct stereoselective formation of the phenanthrofuran system via an intramolecular 4 + 2 cycloaddition of a diene tethered to the 4-position of a 7-methoxybenzofuran-3-carboxylic acid ester.