丁二酸单甲酯 、
(3S,4R,5R)-5-(aminomethyl)-2-[[3-[3-(dimethylamino)-5-(methylcarbamoyl)phenyl]-2-methoxyphenyl]methyl]-4-[(1S)-1-hydroxyethyl]-N-[(1S,2S,3S,5R)-2,6,6-trimethyl-3-bicyclo[3.1.1]heptanyl]-1,2-oxazolidine-3-carboxamide 在
O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 作用下,
以
N,N-二甲基甲酰胺 、
四氢呋喃 为溶剂,
反应 0.25h,
以42%的产率得到methyl 4-[[(3S,4R,5R)-2-[[3-[3-(dimethylamino)-5-(methylcarbamoyl)phenyl]-2-methoxyphenyl]methyl]-4-[(1S)-1-hydroxyethyl]-3-[[(1S,2S,3S,5R)-2,6,6-trimethyl-3-bicyclo[3.1.1]heptanyl]carbamoyl]-1,2-oxazolidin-5-yl]methylamino]-4-oxobutanoate