{2-[4,5-Dichloro-2-(4-fluoro-phenyl)-6-methoxy-1,3-dioxo-indan-2-yl]-ethylamino}-acetic acid tert-butyl ester

({2-[4,5-Dichloro-2-(4-fluoro-phenyl)-6-methoxy-1,3-dioxo-indan-2-yl]-ethyl}-methyl-amino)-acetic acid tert-butyl ester

(S)-1-[2-(4,5-Dichloro-6-methoxy-1,3-dioxo-2-phenyl-indan-2-yl)-ethyl]-pyrrolidine-2-carboxylic acid tert-butyl ester

(S)-2-{2-[4,5-Dichloro-2-(4-fluoro-phenyl)-6-methoxy-1,3-dioxo-indan-2-yl]-ethylamino}-butyric acid tert-butyl ester

(S)-2-({2-[4,5-Dichloro-2-(4-fluoro-phenyl)-6-methoxy-1,3-dioxo-indan-2-yl]-ethyl}-methyl-amino)-butyric acid tert-butyl ester