Stereocontrolled synthesis of a potent agonist of group II metabotropic glutamate receptors, (+)-LY354740, and its related derivatives
摘要:
Efficient synthesis of (+)-2-aminobicyclo[3.1.0]hexane-2,6-dicarboxylic acid (LY354740: 1) and its structurally related analogs (-)-2 and (-)-3 has been accomplished starting with (1S,2R)-1-amino-2-hydroxycyclopentane- or cyclohexanecarboxylic acid (4 or 17) via an intramolecular cyclopropanation of alpha-diazo acetamide. (C) 2003 Elsevier Science Ltd. All rights reserved.
Efficient synthesis of (+)-2-aminobicyclo[3.1.0]hexane-2,6-dicarboxylic acid (LY354740: 1) and its structurally related analogs (-)-2 and (-)-3 has been accomplished starting with (1S,2R)-1-amino-2-hydroxycyclopentane- or cyclohexanecarboxylic acid (4 or 17) via an intramolecular cyclopropanation of alpha-diazo acetamide. (C) 2003 Elsevier Science Ltd. All rights reserved.
Novel and efficient transformation of α-amino nitrile to α-imino and α-amide nitriles in asymmetric Strecker synthesis
Oxidation of α-amino nitrile 4 with ozone gave rise to a mixture of α-imino nitrile 5 and a novel fragmentation product of 6 in one-step. The mixture was converted to a variety of α-substituted α-amino acids 7 in high yields, which enabled the asymmetric transferring Strecker synthesis to be a widely useful method.