1.
J Am Chem Soc
; 123(35): 8593-5, 2001 Sep 05.
Artigo
em Inglês
| MEDLINE
| ID: mdl-11525667
2.
Org Lett
; 3(3): 413-5, 2001 Feb 08.
Artigo
em Inglês
| MEDLINE
| ID: mdl-11428027
RESUMO
[figure: see text] Thermolysis of lactone 18 initiated a stereospecific transannular nitrone-olefin [3 + 2] cycloaddition to yield tetracycle 19. Methanolysis followed by reductive cleavage of the isoxazolidine yielded 20, representing the azaspirocyclic core of pinnaic acid (1).