(Z)-1,5-dihydro-5-isobutylidene-4-methoxypyrrol-2-one

butyric acid 2,5-dihydro-2(Z)-isobutylidene-5-oxo-1H-pyrrol-3-yl ester

N-叔丁氧羰基-L-亮氨醇

phenylmethyl (4S)-4-(2-methylpropyl)-5-oxo-1,3-oxazolidine-3-carboxylate

(S)-benzyl 3-hydroxy-2-isobutyl-5-oxo-2,5-dihydro-1H-pyrrole-1-carboxylate