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(2007/10/03)1-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-5-(2,4-dichloro-phenyl)-pyrrolidin-2-one
7a-(2,4-dichloro-phenyl)-tetrahydro-pyrrolo[2,1-b]oxazol-5-one
5-(2,4-dichloro-phenyl)-1-(2-hydroxy-ethyl)-pyrrolidin-2-one
2-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-3-(2,4-dichloro-phenyl)-1-oxo-2,8-diaza-spiro[4.5]decane-8-carboxylic acid allyl ester
8-benzyl-2-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-3-(2,4-dichloro-phenyl)-2,8-diaza-spiro[4.5]decan-1-one