A new prenylated flavanone from Derris trifoliata Lour

Cheng Jiang1, Shengzi Liu, Weihong He

  • 1Department of Pharmacy, Medical College, Hunan Normal University, Changsha 410006, China. dangdangli@tom.com

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Characteristics of the diene
Conformation
The simplest example of a diene is 1,3-butadiene, an acyclic conjugated π system. At room temperature, the molecule exists as a mixture of s-cis and s-trans conformers by virtue of rotation around the carbon–carbon single bond. Although the s-trans isomer is more stable, the...
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Introduction
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