ENANTIOSELECTIVE SYNTHESIS OF α-HYDROXYTHIOACETALS BY THE BAKER’S YEAST REDUCTION OF α-KETOTHIOACETALS
作者:Tamotsu Fujisawa、Eiji Kojima、Toshiyuki Itoh、Toshio Sato
DOI:10.1246/cl.1985.1751
日期:1985.11.5
Asymmetric reduction of a-ketothioacetals was achieved by fermenting baker’s yeast to afford optically pure α-hydroxythioacetals which play as equivalents of valuable α-hydroxy aldehydes. The utility of the present method was demonstrated in the stereo-selective syntheses of (4S,5S)- and (4S,5R)-4,5-dihydroxydecanoic acid γ-lactones from (S)-(−)-1-(1,3-dithian-2-yl)-1,4-butanediol.
Microbiological synthesis of variously protected L-glyceraldehydes in high optical purity
作者:Giuseppe Guanti、Luca Banfi、Enrica Narisano
DOI:10.1016/s0040-4039(00)84846-7
日期:1986.1
Variously protected L-glyceraldehydes have been enantioselectively synthesized through a sequence involving acylation of formylanion equivalents with glycolic acid derivatives followed by baker's yeast mediated reduction of the resulting ketones.