苄基-1-哌嗪碳酸酯 在
N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以88%的产率得到4-{2-[(2S,3S)-3-(tert-butoxycarbonyl-methylamino)-3-furan-2-yl-2-methyl-propoxy]-acetyl}-piperazine-1-carboxylic acid benzyl ester