Metabolism of Deuterated Isomeric 6,7-Dihydroxydodecanoic Acids inSaccharomyces cerevisiae– Diastereo- and Enantioselective Formation and Characterization of 5-Hydroxydecano-4-lactone (=4,5-Dihydro-5-(1-hydroxyhexyl)furan-2(3H)-one) Isomers
作者:Leif-A. Garbe、Roland Tressl
DOI:10.1002/hlca.200390189
日期:2003.7
chemical synthesis via Sharpless asymmetric dihydroxylation and chiral gas chromatography (Lipodex ®E). The enantiomers of threo-2 were separated without derivatization on Lipodex ®E; in contrast, the enantiomers of erythro-2 could be separated only after transformation to their 5-O-(trifluoroacetyl) derivatives. Biotransformation of the methyl ester (6R,7R)-(6,7-2H2)-1 led to (4R,5R)- and (4S,5R)-(2,5-2H2)-2
研究了氘化的6,7-二羟基十二烷酸甲酯1的化学合成以及随后在啤酒酵母液体培养物中酯1和相应酸1a的代谢。孵育实验用(6 - [R,7 - [R )-或(6小号,7小号)-6,7-二羟基(6,7- 2 ħ 2)十二烷酸甲基酯((6 - [R,7 - [R )-或(6 S,7 S)-(6,7- 2 H 2)-1(分别)和(±)-苏式-或(±)-赤型-6,7-二羟基(6,7- 2 H 2)十二酸((±)-苏--或(±)-赤型-(6,7- 2 H 2)-1a,分别阐明了它们在酵母中的代谢途径(表1-3)。主要产品是异构体2 H标记的5-羟基癸基-4-内酯2。四个异构体的内酯的绝对构型2是由化学合成分配经由夏普勒斯不对称二羟基化和手性气相色谱法(Lipodex ® ë)。苏式对映体- 2而不会对衍生分离Lipodex ® È ; 与此相反,对映体赤- 2只能变换之后被分离到其5- ø - (三氟乙酰基)衍生物。甲酯的生物转化(6