[2-(2,5-Dimethyl-pyrrol-1-yl)-6-methoxy-phenyl]-acetaldehyde

{(S)-2-[2-(2,5-Dimethyl-pyrrol-1-yl)-6-methoxy-phenyl]-1-hydroxymethyl-ethyl}-carbamic acid tert-butyl ester

(S)-2-[2-((S)-2-tert-Butoxycarbonylamino-3-hydroxy-propyl)-3-methoxy-phenylamino]-3-methyl-butyric acid benzyl ester