[(S)-1-{5-[(E)-2-(2-Amino-pyridin-4-yl)-vinyl]-pyridin-3-yloxymethyl}-2-(1H-indol-3-yl)-ethyl]-carbamic acid tert-butyl ester

((S)-2-(1H-Indol-3-yl)-1-{5-[(E)-2-(2-methylamino-pyridin-4-yl)-vinyl]-pyridin-3-yloxymethyl}-ethyl)-carbamic acid tert-butyl ester

tert-butyl (1S)-2-(1H-indol-3-yl)-1-[({5-[(E)-2-pyridin-4-ylvinyl]pyridin-3-yl}oxy)methyl]ethylcarbamate

tert-butyl (1S)-2-(1H-indol-3-yl)-1-{[(6-pyridin-4-ylquinolin-3-yl)oxy]methyl}ethylcarbamate

[(S)-2-(1H-Indol-3-yl)-1-(6-pyridin-3-yl-quinolin-3-yloxymethyl)-ethyl]-carbamic acid tert-butyl ester