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

(R)-2-(7-Methoxy-1-methyl-1H-indol-3-yl)-1-methyl-ethylamine

(R)-2-(8,8-Dimethyl-8,9-dihydro-7H-6-oxa-9a-aza-benzo[cd]azulen-2-yl)-1-methyl-ethylamine

Thiophene-2-sulfonic acid 3-((R)-2-{(R)-2-(tert-butyl-dimethyl-silanyloxy)-2-[3-(thiophene-2-sulfonylamino)-phenyl]-ethylamino}-propyl)-1H-indol-7-yl ester

Butane-1-sulfonic acid 3-((R)-2-{(R)-2-(tert-butyl-dimethyl-silanyloxy)-2-[3-(thiophene-2-sulfonylamino)-phenyl]-ethylamino}-propyl)-1H-indol-7-yl ester