Stereoselective separation of phenylglycine derivatives and 4-hydroxyphenylglycine derivatives with enzyme-containing polymers

摘要

The invention relates to a new enzymatic process for the stereoselective resolution of a DL-phenylglycine derivative comprising hydrolyzing an ester or amide group on an N-acyl-L-phenylglycine ester or amide in an N-acyl-DL-phenylglycine ester or amide in solution by the action of an enzyme bonded to a carrier, separating the N-acyl-D-phenylglycine ester or amide from the N-acyl-L-phenylglycine and then, if desired, hydrolyzing under acid conditions, the ester or amide group of the D-enantiomer and the acyl group. D-Phenylglycine and D-4-hydroxyphenylglycine are used as starting substances for the preparation of semisynthetic antibiotics of the penicillin series. L-Phenylglycine is a starting substance for L-aspartyl-L-phenylglycine methyl ester, which is used as a sweetener.