(2S,4R)-1-(4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrrolo[1,2-f][1,2,4]triazin-2-yl)-4-fluoro-N-((R)-piperidin-3-yl)pyrrolidine-2-carboxamide 以72%的产率得到(2S,4R)-1-(4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrrolo[1,2-f][1,2,4]triazin-2-yl)-N-((R)-1-(cyclopropylmethyl)piperidin-3-yl)-4-fluoropyrrolidine-2-carboxamide