Synthesis of 1,3-Dithianes and 1,3-Dithiolanes. Baker's Yeast Reduction and Lipase-Catalyzed Resolution for Synthesis of Enantiopure Derivatives.
作者:Thorleif Anthonsen、Bård H. Hoff、Nini U. Hofsløkken、Lars Skattebøl、Eirik Sundby、Carsten Christophersen、Hong-Gen Wang、Xin-Kan Yao、Hong-Gen Wang、J. -P. Tuchagues、Mattias Ögren
DOI:10.3891/acta.chem.scand.53-0360
日期:——
3-dithianes have been synthesised from 1-(1,3-dithiolan-2-yl)-2-propanone and 1-(1,3-dithian-2-yl)-2-propanone, respectively. Asymmetric reductions of these ketones using baker's yeast gave the corresponding enantiopure (S)-alcohols. Baker's yeast also reduced the double bond in 3-(1,3-dithian-2-yl)-3-buten-2-one enantioselectively to give (S)-3-(1,3-dithian-2-yl)-2-butanone. 3-(1,3-Dithian-2-yl)-3-buten-2-one
从1-(1,3-二硫代噻吩-2-基)-2-丙酮和1-(1,3-二硫代-2-基)-2合成了三个1,3-二硫杂环戊烷和四个1,3-二硫杂环丁烷-丙酮。使用面包酵母不对称还原这些酮可得到相应的对映纯(S)醇。贝克的酵母还选择性地还原3-(1,3-dithian-2-yl)-3-buten-2-one中的双键以产生(S)-3-(1,3-dithian-2-yl)- 2-丁酮 3-(1,3-Dithian-2-yl)-3-buten-2-one也被化学还原,生成的3-(1,3-Dithian-2-yl)-3-buten-2-通过使用南极假丝酵母的脂肪酶B在有机溶剂中进行酯交换反应拆分醇,得到具有非常高对映体比E的(S)醇和(R)乙酸酯。外消旋1-(1,3-二硫代-2-基)-2-丙醇和1-(1,