作者:M. Hayashi、S. Terashima、K. Koga
DOI:10.1016/s0040-4020(01)92348-8
日期:——
bromolactones (5) stereoselectively produced by the asymmetric bromolactonisation of (S)-N-(α,β-unsaturated) acylprolines(3), were elaborated to highly optically active 2(R),3(S)-epoxyaldehydes(8)(84–98% ee) by successive epoxide formation and reductive cleavage of the proline moiety. The overall process constitutes a highly efficient asymmetric synthesis of 8 from α,β-unsaturated acids(1).
所述bromolactones(5 -由(S)的不对称bromolactonisation立体选择性地制造)ñ - (α,β -不饱和)acylprolines(3),进行了阐述,以高度的光学活性2([R ),3(小号)-epoxyaldehydes(8) (84-98%ee)通过连续的环氧化物形成和脯氨酸部分的还原性裂解。整个过程构成了由α,β-不饱和酸(1)高效合成8的不对称反应。