4-(R)-(1-(S)-aminoethyl)-1-benzyl-2-pyrrolidone

1-benzyl-3-(R)-(1-(S)-tert-butoxycarbonylaminoethyl)pyrrolidine

(-)-9,10-difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido<1,2,3-de><1,4>benzoxazine-6-carboxylic acid BF2-chelate