4-(4-tert-butoxycarbonylamino-phenylsulfanyl)-3-(7-isopropyl-pyrido[2,3-d]pyrimidin-4-ylamino)-benzoic acid 、
(S)-benzyl 2-(4-aminophenylcarbamoyl)pyrrolidine-1-carboxylate 以to give a solid (0.155 g, 64%)的产率得到(S)-benzyl 2-(4-(4-(4-(tert-butoxycarbonylamino)phenylthio)-3-(7-isopropylpyrido[2,3-d]pyrimidin-4-ylamino)benzamido)phenylcarbamoyl)pyrrolidine-1-carboxylate