Amino Acid Synthesis Using (L)-Pyroglutamic Acid as a Chiral Starting Material

Article abstract of DOI:10.1016/S0040-4020(01)89208-5

Deprotonation of protected pyroglutamates 1(c), 1(d), and 1(e) with lithium di-isopropylamine (LDA) or lithium hexamethyldisilazide (LiHDMS) in THF, followed by reaction with electrophiles, leads to the formation of 4-substituted pyroglutamates in good yield.This approach has been used for the synthesis of the novel amino acid (4).Key Words: pyroglutamic acid; chiral amino acid synthesis