tert-butyl 2,4-dioxo-3-(pyrrolidin-1-yl)-1,2,3,4,7,8-hexahydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate 、
(S)-1-[4-(三氟甲基)苯基]乙胺 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
四氢呋喃 为溶剂,
以84%的产率得到(S)-tert-butyl 4-oxo-3-(pyrrolidin-1-yl)-2-{1-[4-(trifluoromethyl)phenyl]ethylamino}-3,4,7,8-tetrahydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate