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Coumarin glycosides from Euphorbia soongarica (Boiss)

Xin-Hong Shi1, Jian-Guang Luo, Ling-Yi Kong

  • 1Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, China.

Journal of Asian Natural Products Research
|January 30, 2009
PubMed

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Crown Ethers02:36

Crown Ethers

Crown ethers are cyclic polyethers that contain multiple oxygen atoms, usually arranged in a regular pattern. The first crown ether was synthesized by Charles Pederson while working at DuPont in 1967. For this work, Pedersen was co-awarded the 1987 Nobel Prize in Chemistry. Crown ethers are named using the formula x-crown-y, where x is the total number of atoms in the ring and y is the number of ether oxygen atoms. The term 'crown' refers to the crown-like shape that these ether molecules take.