1 XP0 5-(phenylethynyl)-4-(pyrrolidin-1-yl)-7h-pyrrolo[2,3-D]pyrimidin-2-amine 1.000 2 DX6 2-amino-5-(2-phenylethyl)-3,7-dihydro-4h-pyrrolo[2,3-D]pyrimidin-4-one 0.750 3 H0V 5-phenethyl-7h-pyrrolo[2,3-D]pyrimidine-2,4-diamine 0.750