(aR)-a-[[(4-Ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]-4-hydroxy-benzeneacetic Acid is an intermediate used to prepare Cephalosporin derivatives with activities against both Gram-positive and Gram-negative bacteria.
参考文献
Albrecht, H., et al.: J. Med. Chem., 37, 400 (1994)