N-(2-Amino-ethyl)-2-(7-dimethylamino-2-oxo-2H-chromen-4-yl)-acetamide 、
在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
N,N-二甲基甲酰胺-d7 为溶剂,
反应 12.0h,
以3.8 g的产率得到N-[2-[[2-[[(3R,4aR,10aS)-3,4a-dichloro-10a-[[(1S,3S,6S)-3-chloro-6-hydroxy-2,2,6-trimethylcyclohexyl]methyl]-6-hydroxy-2,2,7-trimethyl-5,10-dioxo-3,4-dihydrobenzo[g]chromen-8-yl]oxy]acetyl]amino]ethyl]-2-[7-(dimethylamino)-2-oxochromen-4-yl]acetamide