(R)-3-(2-aminopropyl)-7-benzyloxyindole

7-benzyloxy-3-[(2R)-2-(tert-butoxycarbonylamino)propyl]-1-[2-methoxycarbonylethyl]-1H-indole

7-benzyloxy-3-[(2R)-2-(tert-butoxycarbonylamino)propyl]-1-{[1-hydroxymethyl]ethyl}-1H-indole

2-[7-Benzyloxy-3-((R)-2-tert-butoxycarbonylamino-propyl)-indol-1-yl]-propionic acid

{(R)-2-[7-Hydroxy-1-(2-hydroxy-1-methyl-ethyl)-1H-indol-3-yl]-1-methyl-ethyl}-carbamic acid tert-butyl ester