[1]Van Oeveren A, Jansen J F G A, Feringa B L. Enantioselective synthesis of na tural dibenzybutyrolactone lignans (-)-enteroctone, (-)-hinokinin, (-)-plu viatolide, (-)-enterodiol and furofuran lignan (-)-eudesmi via tandem conjug ate addition to γ-alkoxy-butenolides[J]. J Org Chem, 1994, 59: 5999~6007
[2]
[2]Pelter A, Ward R S, Jones D M, et al. Asymmetric syntheses of lignans of the dibenzylbutyrolactone dibenzylbutanediol aryltetralin and dibenzocycloo ctadiene series[J]. Tertahedron: Asymmetry, 1992, 3: 239~242.
[3]
[3]Hui Huang and Qinghua Chen. A valuable synthetic route to spiro-cyclopro pane derivatives containing multiple stereogenic centers[J]. Tetrahedron: Asym metry, 1999, 10: 1295~1307.