(R)-2,6-diaminocaproic acid ethyl ester 、
2,4-bis(trifluoromethyl)imidazo[1,2-a][1,8]naphthyridine-8-carboxylic acid 在
N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以67%的产率得到ethyl (2,4-bis(trifluoromethyl)imidazo[1,2-a][1,8]naphthyridine-8-carbonyl)-D-lysinate