acromelic acid A

(2S)-2α-Carboxy-4β-[(6-carboxy-2-oxo-1,2-dihydropyridin)-3-yl]pyrrolidine-3β-acetic acid

5-[(3S)-5β-Carboxy-4α-carboxymethylpyrrolidin-3α-yl]-1,6-dihydro-6-oxopyridine-2-carboxylic acid

5-[(3S)-5β-Carboxy-4α-(carboxymethyl)pyrrolidin-3α-yl]-1,6-dihydro-6-oxopyridine-2-carboxylic acid

1,2-Dihydro-2-oxo-3-[(3S)-4α-(carboxymethyl)-5β-carboxypyrrolidin-3α-yl]pyridine-6-carboxylic acid

(2S)-3β-(Carboxymethyl)-4β-(2-oxo-6-carboxy-1,2-dihydropyridine-3-yl)pyrrolidine-2α-carboxylic acid