Facile Synthesis of Optically Active .GAMMA.-Lactones via Lipase-catalyzed Reaction of 4-Substituted 4-Hydroxybutyramides.
作者:Yassufumi MATSUMURA、Teruko ENDO、Mituo CHIBA、Hidemichi FUKAWA、Yoshiyasu TERAO
DOI:10.1248/cpb.48.304
日期:——
afford (S)-succinic acid monoester and unreacted (R)-4-hydroxybutyramide derivative, which were separated easily by treatment with an alkaline solution. Both enantiomers were converted easily to optically active gamma-substituted gamma-butyrolactones.
外消旋的4-取代的4-羟基丁酰胺与琥珀酸酐的脂肪酶催化的酯交换反应对映选择性地进行,得到(S)-琥珀酸单酯和未反应的(R)-4-羟基丁酰胺衍生物,通过用碱溶液处理容易地分离它们。两种对映异构体均易于转化为光学活性的γ-取代的γ-丁内酯。