benzyl (3aR,4S,7S,7aS)-7-[[tert-butyl(diphenyl)silyl]oxymethyl]-2,2,4-trimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-d]pyridazine-5-carboxylate 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 1.5h,
以94%的产率得到(3S,4S,5R,6S)-1-N-benzyloxycarbonyl-4,5-O-isopropylidene-3-hydroxymethyl-6-methyl-hexahydropyridazine-4,5-diol