Isoxazolidiny

1-Azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid,6-(1-hydroxyethyl)-7-oxo-3-[[2-[(2-propenyloxy)carbonyl]-4-isoxazolidinyl]thio]-, 2-propenyl ester

3-Pyrazolidinone,2-[[(3R,4R,5S)-2,5-dimethyl-3-phenyl-4-isoxazolidinyl]carbonyl]-1-ethyl-5,5-dimethyl-

Pyridine, 4-(2-methyl-5-isoxazolidinyl)-