1-[2-(2-Cyano-3-oxo-cyclopentyl)-ethyl]-1H-indole-5-carboxylic acid ethyl ester

ethyl 1-<2-(2-cyano-3-methoxy-2-cyclopentenyl)ethyl>-1H-indole-5-carboxylate

1-<2-(2,4-diamino-6,7-dihydro-5H-cyclopentapyrimidin-5-yl)ethyl>-1H-indole-5-carboxylic acid

ethyl 1-<2-(2,4-diamino-6,7-dihydro-5H-cyclopentapyrimidin-5-yl)ethyl>-1H-indole-5-carboxylate

(S)-2-({1-[2-(2,4-Diamino-6,7-dihydro-5H-cyclopentapyrimidin-5-yl)-ethyl]-1H-indole-5-carbonyl}-amino)-pentanedioic acid diethyl ester