Tandem Conjugate Cyanide Addition−Dieckmann Condensation in the Synthesis of the ABCD-Ring System of Lactonamycin
作者:Jay P. Deville、Victor Behar
DOI:10.1021/ol0257373
日期:2002.4.1
ABCD-ring system of lactonamycin (1) is reported in this Letter. The key step is the tandem cyanide conjugateaddition-Dieckmanncondensation of alkyne 17 to afford a fully functionalized anthracene. Selective reduction of the cyano group with subsequent lactam formation affords the tetracyclic core of lactonamycin 19. [reaction: see text]