Stereoselective total syntheses of α,β-unsaturated δ-lactones having a 1,3-syn-polyol moiety, isolated from Cryptocarya latifolia
作者:Kåre B Jørgensen、Toshiro Suenaga、Tadashi Nakata
DOI:10.1016/s0040-4039(99)01860-2
日期:1999.12
first total syntheses of two α,β-unsaturated δ-lactones having a 1,3-syn-polyol moiety, isolated from Cryptocarya latifolia, were achieved. The key reactions include the Sharpless asymmetric epoxidation of the allyl alcohol, stereoselective addition of an allyl group to the epoxy aldehyde, regioselective reduction of the epoxy ring, and formation of the α,β-unsaturated δ-lactone.
2个α的第一全合成,具有β -不饱和δ内酯1,3-顺-polyol部分,从分离桂latifolia的,得以实现。关键反应包括烯丙醇的Sharpless不对称环氧化,烯丙基向环氧醛的立体选择性加成,环氧环的区域选择性还原以及α,β-不饱和δ-内酯的形成。