A green and expedient synthesis of enantiopure diketopiperazines via enzymatic resolution of unnatural amino acids
作者:Pedro C. Pereira、Isabel W.C.E. Arends、Roger A. Sheldon
DOI:10.1016/j.tetlet.2014.06.105
日期:2014.9
Dipeptides comprising a d-phenylglycyl moiety coupled to the l-enantiomer of 2-amino butyric acid, norvaline, norleucine, and homocysteine were successfully synthesized from d-phenylglycine amide and the racemate of the corresponding unnaturalaminoacid. The reaction is catalyzed by an immobilized form of penicillin G acylase in an aqueous medium. The dipeptides were subsequently converted into the