Studies on Optically Active Amino Acids. VI. Studies on α-Alkyl-α-amino Acids. II. Resolution of Some α-Methyl-α-amino Acids through l-Menthyl Ester

Abstract

New resolution method of α-methyl-α-amino acid has been accomplished by way of l-menthyl ester i.e. (-)-IIa, (-)-IIb, (+) and (-)-IIc-HCl, (-)-VII and (-)-VIII were obtained in pure state from DL-IIa, IIb, and IIc by way of the scheme shown in Chart 1 and 2.