| 摘要 |
An enzymatic process employing pancreatin or choelsterol esterase for resolution of racemates of 4-aryl-2-oxo-pyrrolidine-3-carboxylic acid esters of general formula I <IMAGE> (I) in which X represents a carbon-carbon bond or an oxygen atom, R1 means a hydrocarbon radical optionally substituted by hydroxy groups, oxo groups and/or halogen atoms and/or interrupted by nitrogen atoms with at most 16 carbon atoms, R2 symbolizes an alkyl group with up to 4 carbon atoms and R3 represents an alkyl group with at most 6 carbon atoms is described. |
