(3R,6S)-2,5-dimethoxy-6-isopropyl-3-(4-fluoro-3-nitrophenyl)-3,6-dihydro-1,4-pyrazine

[(R)-2-Hydroxy-1-(4-methoxy-3-{3-methoxy-5-[(S)-2-(2-methoxy-ethoxymethoxy)-1-(2,2,2-trifluoro-acetylamino)-ethyl]-phenoxy}-phenyl)-ethyl]-carbamic acid tert-butyl ester

[(R)-2-Hydroxy-1-(4-hydroxy-3-{3-methoxy-5-[(S)-2-(2-methoxy-ethoxymethoxy)-1-(2,2,2-trifluoro-acetylamino)-ethyl]-phenoxy}-phenyl)-ethyl]-carbamic acid tert-butyl ester

[(R)-1-(3-{3-[(S)-1-Amino-2-(2-methoxy-ethoxymethoxy)-ethyl]-5-methoxy-phenoxy}-4-methoxy-phenyl)-2-hydroxy-ethyl]-carbamic acid tert-butyl ester

[(R)-1-[(S)-1-{3-[5-((R)-1-tert-Butoxycarbonylamino-2-hydroxy-ethyl)-2-methoxy-phenoxy]-5-methoxy-phenyl}-2-(2-methoxy-ethoxymethoxy)-ethylcarbamoyl]-2-(4-fluoro-3-nitro-phenyl)-ethyl]-carbamic acid 2-trimethylsilanyl-ethyl ester