Synthesis of chiral epoxy alcohols by use of baker's yeast
摘要:
Synthesis of optically active 3,4-epoxy-4-phenyl-2-butanols, which are expected to be useful intermediates for the synthesis of biologically active compounds such as beta-blocker, was achieved by asymmetric reduction of 3,4-epoxy-4-phenyl-2-butanone with baker's yeast.
Stereodivergent Access to Enantioenriched Epoxy Alcohols with Three Stereogenic Centers via Ruthenium-Catalyzed Transfer Hydrogenation
作者:Zhifei Zhao、Prasanta Ray Bagdi、Shuang Yang、Jinggong Liu、Weici Xu、Xinqiang Fang
DOI:10.1021/acs.orglett.9b01789
日期:2019.7.19
technique of stereodivergent reaction on racemic mixtures (stereodivergent RRM) was employed for the first time in ruthenium complex catalyzed transferhydrogenation of racemic epoxy ketones, providing a new and very simple method that allows access to enantioenriched epoxy alcohols with three stereogenic centers in a one-step fashion. The protocol features simplereaction conditions, practical operation
Switchable asymmetric bio-epoxidation of α,β-unsaturated ketones
作者:Yu-Chang Liu、Zhong-Liu Wu
DOI:10.1039/c5cc07548c
日期:——
Efficient asymmetric bio-epoxidation of electron-deficient [small alpha],[small beta]-unsaturated ketones was realized via a tandem reduction-epoxidation-dehydrogenation cascade, which proceeds in a switchable manner to afford either chiral epoxy ketones or allylic epoxy alcohols...
Highly Regio- and Stereoselective Intramolecular Rearrangement of Glycidol Acetal to Alkoxy Cyclic Acetals
作者:Meera Johny、Rose Mary Philip、Goreti Rajendar
DOI:10.1021/acs.orglett.2c02397
日期:2022.8.26
Lewis acid activation of acetal generates an oxocarbenium ion that initiates the epoxide ring-opening event, giving the bicyclic [3,1,0]epoxonium ion intermediate that undergoes exo/endo-selective opening by a tethered alkoxide. Mechanistic insights into preferential acetal activation over the epoxide were obtained by crossover experiments. The method was applied in the total synthesis of parvistone
Takeshita Mitsuhiro, Akutsu Nami, Tetrahedron, 3 (1992) N 11, S 1381-1384
作者:Takeshita Mitsuhiro, Akutsu Nami
DOI:——
日期:——
Synthesis of chiral epoxy alcohols by use of baker's yeast
作者:Mitsuhiro Takeshita、Nami Akutsu
DOI:10.1016/0957-4166(92)80011-k
日期:1992.11
Synthesis of optically active 3,4-epoxy-4-phenyl-2-butanols, which are expected to be useful intermediates for the synthesis of biologically active compounds such as beta-blocker, was achieved by asymmetric reduction of 3,4-epoxy-4-phenyl-2-butanone with baker's yeast.