[(3S,7S,8S,9S)-7,8-dibenzyloxy-9-methyl-2-oxo-oxonan-3-yl]ammonium chloride 、
3-羟基-4-甲氧基吡啶-2-羧酸 在
N-甲基吗啉 、 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,
以44.3%的产率得到N-[(3S,7S,8S,9S)-7,8-dibenzyloxy-9-methyl-2-oxo-oxonan-3-yl]-3-hydroxy-4-methoxypyridine-2-carboxamide