PROCESS FOR PRODUCING L-ALLYSINE ACETALS

摘要

A process for efficiently producing L-allysine acetals in short steps, which comprises reacting a D,L-allysine acetal of general formula: (1) (wherein R1 and R2 are the same or different from each other and each represents an alkyl group of 1 to 8 carbon atoms, or R1 and R2 together form a ring to represent an alkylene group having 2 to 8 carbon atoms) in the presence of an enzyme having the activity for sterically selectively and oxidatively deaminating Damino acids to convert the D,L-allysine acetal into a mixture of a 2-oxo-6,6-dialkoxyhexanoic acid of general formula (2) (wherein R1 and R2 are each as defined above) with an L-allysine acetal of general formula (3) (wherein R1 and R2 are each as defined above) and then recovering the L-allysine acetal.