1-bromo-4-[p-(carbomethoxy)phenoxy]2-butanone

diethyl N-[p-(1-amino-2-oxo-4-oxabutanoyl)benzoyl]-L-glutamate ketal

1-[N-(2,4-diamino-5-nitropyrimidin-6-yl)amino]-4-[diethyl N-p-anisoyl-L-glutamate]-2-butanone