In this paper ten lactonic crown ethers weresynthesized, of which seven were new compounds.Theirstructures were confirmed by EA,IR,1HNMR andMS analysis.
成了10个内酯型冠醚化
，
中7个冠醚是新化，结构
由元素
，及红外、核磁、质谱
实。
In this paper ten lactonic crown ethers weresynthesized, of which seven were new compounds.Theirstructures were confirmed by EA,IR,1HNMR andMS analysis.
成了10个内酯型冠醚化，中7个冠醚是新化，结构由元素，及红外、核磁、质谱实。
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