抄録
The acylase activity of a strain (KT 218) of soil bacteria was tested against N-benzoyl and N-dichloroacetyl derivatives of 2-aminooctanoic, 2-aminodecanoic, 2-aminolauric, 2-aminomyristic, and 2-aminopalmitic acid. It was revealed that the dichloroacetylaminoacids were more easily hydrolyzed than the corresponding benzoylamino acids and that the N-dichloroacetyl-derivatives of the homologous series of straight chain 2-aminoacid were hydrolyzed at progressively decreasing rates from N-dichloroacetyl-DL-2-aminooctanoic acid to N-dichloroacetyl-DL-2-aminopalmitic acid which was resistant to KT 218 acylase.
The acetone powder of KT 218 effected asymmetric hydrolysis of N-dichloroacetyl derivatives of 2-aminooctanoic, 2-aminodecanoic, 2-aminolauric, 2-aminomyristic acids to yield respectively L-2-aminooctanoic acid (XI) and N-dichloroacetyl-D-2-aminooctanoic acid (XV), L-2-aminodecanoic acid (XII) and N-dichloroacetyl-D-2-aminodecanoic acid (XVI), L-2-aminolauric acid (XIII) and N-dichloroacetyl-D-2-aminolauric acid (XVII), and L-2-aminomyristic acid (XIV) and impure N-dichloroacetyl-D-2-aminomyristic acid. In the same way KT 218 acetone powder effected asymmetric hydrolysis of N-benzoyl derivatives of 2-aminooctanoic, 2-aminodecanoic, and 2-aminolauric acids to yield respectively L-2-aminooctanoic acid (XI) and N-benzoyl-D-2-aminooctanoic acid (XVIII), L-2-aminodecanoic acid (XII) and impure N-benzoyl-D-2-aminodecanoic acid, and L-2-aminolauric acid (XIII) and impure N-benzoyl-D-2-aminolauric acid.
