Chiral α-Methyl-homoallylic Alcohols from Yeast-Generated Precursors. Synthesis of (4<i>R</i>,5<i>S</i>) Sitophilure
作者:Giovanni Fronza、Claudio Fuganti、Hans-Erik Högberg、Giuseppe Pedrocchi-Fantoni、Stefano Servi
DOI:10.1246/cl.1988.385
日期:1988.3.5
Optically active (3S,4R)-3,4-dihydroxy-4-methyl-6-phenyl-hex-5-ene and (2S,3RS)-2,3-dihydroxy-3-methyl-5-phenyl-pent-4-ene, previously obtained from fermenting baker’s yeast reduction of the corresponding Ketones, are transformed either into optically active α-ethyl and α-methyl ketones, or into α-methyl homoallylic alcohols from which enantiomerically pure (4S,5R) sitophilure, (2S,3R)-2-methyl-1,3-butandiol
旋光性 (3S,4R)-3,4-dihydroxy-4-methyl-6-phenyl-hex-5-ene 和 (2S,3RS)-2,3-dihydroxy-3-methyl-5-phenyl-pent- 4-烯,先前从相应酮的发酵面包酵母还原中获得,被转化为光学活性的 α-乙基和 α-甲基酮,或转化为 α-甲基高烯丙醇,从中获得对映体纯 (4S,5R) sitophilure,( 2S,3R)-2-甲基-1,3-丁二醇及其(2S,3S)-非对映异构体已制备。