Four diastereoisomeric 3-diacylaminoquinazolinones 8a–d
have been separated and identified by X-ray structure determinations on
three of them: their stoichiometric reactions with α-phenylethylamine
and with 2-methylpiperidine (2 equiv. of amine) gave the corresponding
N-(2-acetoxypropanoyl)amine and unreacted amine in high
diastereomeric/enantiomeric excess.
通过对其中三种化合物进行 X 射线结构测定,分离并确定了四种非对映异构体 3-
二乙酰氨基
喹唑啉酮 8a-d:它们与 α-苯基
乙胺和
2-甲基哌啶(2 等份胺)的
化学反应生成了相应的 N-(2-乙酰氧基丙酰基)胺和未反应胺,非对映异构体/对映异构体的过量率很高。