A Selective Intramolecular 5-<i>exo</i>-dig or 6-<i>endo</i>-dig Cyclization en Route to 2-Furanone or 2-Pyrone Containing Tricyclic Scaffolds
作者:Christoffer Bengtsson、Fredrik Almqvist
DOI:10.1021/jo201952p
日期:2011.12.2
Ringfused bicyclic 2-pyridones exhibit interesting biological properties against pili assembly in uropathogenic Escherichia coli (Pinkner, J. S. et al. Proc. Natl. Acad. Sci. U. S. A. 2006, 103, 17897-17902; Aberg, V. et al. Org. Biomol. Chem. 2007, 5, 1827-1834) as well as curli formation (Cegelski, L. et al. Nat. Chem. Biol. 2009, 5, 913-919). In the search for new ring-fused central fragments, highly selective synthetic routes to the 2-furanone or 2-pyrone containing tricyclic scaffolds 1 and 2 have been developed.