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- W1999828656 abstract "Summary Tetrahydrofolic acid (H4PteGlu) functions as a cofactor for a large group of enzyme-catalyzed reactions. Due to the stereoselective nature of these reactions only one diastereomer can be utilized. In the reduction of L-folic acid to tetrahydrofolic acid a second asymmetric centre is created (at C-6) yielding 2 diastereomers. Tetrahydrofolic acid can be prepared electrochemically from L-folic acid [I]. In analogy to chemical and catalytic reductions equal amounts of l,L-H4PteGlu and d,L-H4PteGlu could be expected from the electrochemical reductions. Since folic acid is strongly adsorbed to a mercury electrode, a change of the chiral environment at the electrode might induce stereospecificity. To this purpose L-folic acid was reduced in the presence of small amounts of optically active compounds such as different proteins and alkaloids. At the same time the effects of a change in electrode shape and material were studied. Preliminary results showed that enantiomeric excesses up to 20% could be obtained as determined by polarimetry and enzyme activity." @default.
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- W1999828656 date "1980-01-01" @default.
- W1999828656 modified "2023-09-25" @default.
- W1999828656 title "Asymmetric reduction of L-folic acid at chiral electrodes" @default.
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- W1999828656 doi "https://doi.org/10.1016/s0022-0728(80)80298-1" @default.
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