3-{2-[((S)-2-Acetylamino-3-phenyl-propionyl)-benzyl-amino]-3-phenyl-propionylamino}-N-benzyl-2-hydroxy-butyramide

N-Benzyl-N'-({benzyl-[1-(2-benzylcarbamoyl-2-hydroxy-1-methyl-ethylcarbamoyl)-3-methyl-butyl]-carbamoyl}-methyl)-succinamide

N-Benzyl-N'-{[[1-(2-benzylcarbamoyl-2-hydroxy-1-methyl-ethylcarbamoyl)-2-phenyl-ethyl]-(3-methyl-butyl)-carbamoyl]-methyl}-succinamide

N-Benzyl-N'-({benzyl-[1-(2-benzylcarbamoyl-2-hydroxy-1-methyl-ethylcarbamoyl)-2-phenyl-ethyl]-carbamoyl}-methyl)-succinamide

7-benzylcarbamoyl-7-(tert-butyldimethylsilanyloxy)-2-methoxy-hepta-2,6-dienoic acid methyl ester