(5S,6R)-5-acetoxy-6-(acetoxymethyl)-5,6-dihydro-2H-pyran-2-one 、
p-methoxydiphenylnitrone 以
甲苯 为溶剂,
反应 8.0h,
生成
(3R,3aR,6R,7R,7aS)-7-acetoxy-6-acetoxymethyl-3-p-methoxyphenyl-4-oxo-2-phenyl-tetrahydropyrano-<3,4-d>-isoxazolidine 、 (3S,3aR,6R,7R,7aS)-7-acetoxy-6-acetoxymethyl-3-p-methoxyphenyl-4-oxo-2-phenyl-tetrahydropyrano-<3,4-d>-isoxazolidine 、 (3S,3aS,6R,7R,7aR)-7-acetoxy-6-acetoxymethyl-3-p-methoxyphenyl-4-oxo-2-phenyl-tetrahydropyrano-<3,4-d>-isoxazolidine