1-(3-fluorobenzyl)-5-methyl-1H-1,2,3-triazole-4-carboxylic acid 、 (2R,3S)-4-amino-4-oxo-3-(2-(1-oxo-2,5-diazaspiro[3.4]octan-2-yl)acetamido)butan-2-yl acetate 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
二氯甲烷 为溶剂,
反应 18.0h,
以47.3%的产率得到(2R,3S)-4-amino-3-(2-(5-(1-(3-fluorobenzyl)-5-methyl-1H-1,2,3-triazole-4-carbonyl)-1-oxo-2,5-diazaspiro[3.4]octan-2-yl)acetamido)-4-oxobutan-2-yl acetate