An efficient synthesis of endo,exo-furofuranone derivatives
作者:Nigel A. Swain、Richard C. D. Brown、Gordon Bruton
DOI:10.1039/b206150c
日期:2002.9.11
The ringopenings of 1-acetyl-4-phenyl-3-oxabicyclo[3.1.0]hexane afforded alpha-acetyl-gamma-butyrolactone that underwent a novel diazo-transfer reaction, followed by C-H insertion, to provide a series of endo,exo-furofuranone analogues.
A Versatile Stereoselective Synthesis of <i>e</i><i>ndo,</i><i>e</i><i>xo</i>-Furofuranones: Application to the Enantioselective Synthesis of Furofuran Lignans
作者:Nigel A. Swain、Richard C. D. Brown、Gordon Bruton
DOI:10.1021/jo035365r
日期:2004.1.1
key α-diazo-γ-butyrolactones 22−25. Highly stereoselective rhodium-catalyzed C−H insertion reactions of diazolactones 22−25 completed the synthesis of endo,exo-2,6-diarylfurofuranones 26−29 in overall yields ranging from 41 to 48% from 1-phenylallyl alcohol (±)-10. The approach developed for the furofuranones 26−29 was then applied to the asymmetric syntheses of four furofuran lignans, (+)-xanthoxylol