207. Synthesis of α-amino-β-hydroxy-acids. Part I.DL-allothreonine,DL-erythro-β-hydroxyleucine, andDL-erythro- and threo-β-hydroxy-β-methylaspartic acid
207. Synthesis of α-amino-β-hydroxy-acids. Part I.DL-allothreonine,DL-erythro-β-hydroxyleucine, andDL-erythro- and threo-β-hydroxy-β-methylaspartic acid