| 摘要 |
N-urethane-protected alpha -amino aldehydes (I) are prepared by the reaction, in an inert organic solvent, of an N-urethane-protected alpha -amino acid N-carboxy anhydride (II) with a lithium hydro-aluminate or an alkaline hydro-borate. R = an alpha -amino acid residue; X = a protecting group that forms a urethane. |
