Catalytic Asymmetric Access to α,β Unsaturated δ-Lactones through a Vinylogous Aldol Reaction: Application to the Total Synthesis of the Prelog-Djerassi Lactone
作者:Guillaume Bluet、Belén Bazán-Tejeda、Jean-Marc Campagne
DOI:10.1021/ol0168317
日期:2001.11.1
[reaction--see text] A one-step catalytic asymmetric access to alpha,beta unsaturated delta-lactones is described, using a vinylogous Mukaiyama-aldol reaction between a gamma-substituted dienolate and various aldehydes in the presence of Carreira catalyst CuF.(S)-tolBinap. This methodology has been further applied to a straightforward access to the Prelog-Djerassi lactone.
[反应-见正文]描述了在Carreira催化剂CuF存在下,使用γ-取代的二烯酸酯和各种醛类之间的乙烯基Mukaiyama-aldol反应,一步一步催化不对称地获得α,β不饱和δ-内酯的方法。 S)-tolBinap。该方法已进一步应用于直接获得Prelog-Djerassi内酯的方法。