5-Benzyloxymethyl-2-chloro-4-oxo-4,5-dihydroimidazo[4,5-d]pyridazine-1-sulfonic acid dimethylamide 、
N-Boc-哌嗪 在
氮气 、 silica gel 作用下,
反应 2.5h,
以Thus, 1.94 g of the title compound was obtained from the fraction的产率得到t-butyl 4-(6-benzyloxymethyl-7-oxo-6,7-dihydro-1H-imidazo[4,5-d]pyridazin-2-yl)piperazine-1-carboxylate