abstract |
The present invention relates to a process for preparing (2S, 3R) or (2R, 3S) alpha-hydroxy-beta-sulfinamide derivatives with enantiomerically pure oxygen protecting groups, -Amino-N-cyclopropyl-2-hydroxyhexanamide and its acceptable salts or (2R, 3S) -3-amino-N-cyclopropyl-2-hydroxyhexanamide and its acceptable salts , And these compounds can be produced with high optical purity and high yield. |