Opticallyactiveesters were conveniently obtained from the corresponding racemic alcohols or esters by lipase-catalyzed transformation, followed by sulfation. Sulfation by sulfurtrioxide pyridine complex enabled facile isolation of opticallyactiveesters by extraction instead of laborious column chromatography. The method would be especially advantageous on a large scale.
1,n-Diols (n = 2 - 5) and 2-hydroxy aldehydes protected with a steric auxiliary are transformed by Pseudomonas lipases with high enantioselectivity, thus allowing the efficient resolution of these molecules and the synthesis of related derivatives with high optical purity.
Brachwitz,H. et al., Journal fur praktische Chemie (Leipzig 1954), 1979, vol. 321, p. 769 - 774
作者:Brachwitz,H. et al.
DOI:——
日期:——
BRACHWITZ H.; KRAFT R.; LANGEN P.; ETZOLD G.; SCHILDT J., J. PRAKT. CHEM., 1979, 321, NO 5, 769-774
作者:BRACHWITZ H.、 KRAFT R.、 LANGEN P.、 ETZOLD G.、 SCHILDT J.