pyrrolizin-3-one

methyl 1-[(1,1-dimethylethoxy)carbonyl]-2-pyrrolidinepropanoate

methyl (E)-3-(6'-ethoxy-5',6'-dihydro-4'H-1',2'-oxazin-3'-yl)propenoate

1,2-dihydropyrrolizin-3-one

氮杂环辛酮