The resolution of racemic 2, 3-methanopyroglutamic acid (∇ Glp) was accomplished using L- and D-Leu-NH 2 and both isomers were hydrolyzed to give optically active (Z)-2, 3- methanoglutamic acids 1)(∇ Z Glu), respectively. The optical rotations of these samples were compared with∇ Z Glu obtained by hydrolysis of∇ Glp prepared by oxidation of (2S, 3R)-or (2R, 3S)-2, 3-methanoproline 1)(∇ Pro), the absolute configurations of which were ...