Efficient Synthesis of (R)- and (S)-α-(Hydroxymethyl)pyroglutamic Acid Esters from l-Proline
作者:Tetsuro Shinada、Yasufumi Ohfune、Hiroki Yoshida
DOI:10.1055/s-0029-1217024
日期:2009.11
An efficient synthesis of (R)- and (S)-α-(hydroxymethyl)pyroglutamic acid esters from l-proline has been achieved. Each step was carried out on a decagram scale to access the N-protected (R)-ester in a highly efficient manner (44% overall yield from a proline-derived bicyclic substrate). amino acids - α-substituted proline - pyroglutamic acid esters - stereoselective synthesis - alkylations