Asymmetric synthesis of a chroman derivative (vitamin e precursor)
作者:Yoji Sakito、Gohfu Suzukamo
DOI:10.1016/s0040-4039(00)85757-3
日期:1982.1
Chromanmethanol 2, a chiral intermediate for the synthesis of α-tocopherol 1, is prepared from α-hydroxy aldehyde 5, which is obtained by an asymmetricsynthesis in over 95% ee.
ASYMMETRIC SYNTHESIS OF TWO ENANTIOMERS OF FRONTALIN
作者:Yoji Sakito、Teruaki Mukaiyama
DOI:10.1246/cl.1979.1027
日期:1979.8.5
(S)-Frontalin and its antipode were separately synthesized in good yields from (S)- and (R)-2-hydroxy-2,6-dimethyl-6-heptenal, which were prepared in high optical yields by an asymmetric synthesis using (S)- 2-(anilinomethyl)pyrrolidine as a chiral auxiliary.