Ready available 3-phenylselanylfuran-2(5H)-one undergoes tandem conjugate addition-alkylation by organocopper reagents to afford, with good yields and diastereoselectivities, 3,4-disubstituted-3-phenylselanyl-γ-butyrolactones, which can be transformed into naturally occurring compounds, such as lignans.
A short synthesis of biologically active lignan analogues
作者:Stefan Kamlage、Michael Sefkow、Martin G. Peter、Beatrice L. Pool-Zobel
DOI:10.1039/b008499i
日期:——
β-Benzyl-γ-butyrolactones were synthesized in four transition metal catalysed reactions from butynediol, and alkylated to afford new, biologicallyactive lignan analogues.