(S)-2-{4-[2-(2,4-Diamino-7H-pyrrolo[2,3-d]pyrimidin-5-yl)-ethyl]-benzoylamino}-5-(3-ethoxycarbonyl-propionylamino)-pentanoic acid methyl ester

(S)-2-{4-[2-(2,4-Diamino-7H-pyrrolo[2,3-d]pyrimidin-5-yl)-ethyl]-benzoylamino}-5-[(naphthalene-1-carbonyl)-amino]-pentanoic acid methyl ester

(S)-5-(2-Acetoxy-benzoylamino)-2-{4-[2-(2,4-diamino-7H-pyrrolo[2,3-d]pyrimidin-5-yl)-ethyl]-benzoylamino}-pentanoic acid methyl ester

N-((S)-4-{4-[2-(2,4-Diamino-7H-pyrrolo[2,3-d]pyrimidin-5-yl)-ethyl]-benzoylamino}-4-methoxycarbonyl-butyl)-terephthalamic acid methyl ester

methyl Nα-[4-[2-(2,4-diamino-7H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl]-Nδ-(4-fluorophenylcarbamoyl)-L-ornithinate