(3S,8aR)-2-[(2S)-2-amino-2-(tetrahydro-2H-pyran-4-yl)acetyl]-N-[(4R)-3,4-dihydro-2H-chromen-4-yl]-7,7-difluorooctahydropyrrolo[1,2-a]pyrazine-3-carboxamide dihydrochloride 、
BOC-N-甲基-L-丙氨酸 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,
反应 18.0h,
生成
tert-butyl [((1S)-2-{[(1S)-2-[(3S,8aR)-3-[(4R)-3,4-dihydro-2H-chromen-4-ylcarbamoyl]-7,7-difluorohexahydropyrrolo[1,2-a]pyrazin-2(1H)-yl]-2-oxo-1-(tetrahydro-2H-pyran-4-yl)]ethyl}amino)-1-methyl-2-oxoethyl]methylcarbamate