433285-17-7Relevant articles and documents
Synthesis of chiral non-racemic 3-(dioxopiperazin-2-yl)propionic acid derivatives
Weigl, Manuela,Wünsch, Bernhard
, p. 1173 - 1183 (2002)
Starting with the proteinogenic amino acid (S)-glutamate (3) a facile, high yielding synthesis of the chiral non-racemic 3-(dioxopiperazin-2-yl)propionates 6, 11, and 14 is presented. Key intermediates in the synthesis of N1-benzyl substituted (dioxopiperazin-2yl)propionates 11 and 14 are the N-monobenzylglutamate 8 and the chloroacetamide 12, which allow introduction of various substituents in position 4 of the piperazine ting. In receptor binding studies with radioligands the 3-(piperazin-2-yl)propanol 15 was found to have promising affinity for σ1-receptors (Ki=66.1 nM).