(R)-(R)-1-((benzyloxy)carbonyl)pyrrolidine-2-carboxylic (isobutyl carbonic) anhydride

(S)-5-phenyl-2-(pyrrolidin-2-yl)imidazo[1,2-a]pyridine

N-Boc-N-methyl-L-alanine-L-dehydropyranylglycine

racemic Cbz-pyranylglycine methyl ester

benzyl (S)-2-(5-bromoimidazo[1,2-a]pyridin-2-yl)pyrrolidine-1-carboxylate