中国横断山脈地域に生育するキク科<i>Ligularia</i>属植物の生産するフラノエレモフィラン化合物の多様性 [in Japanese] Diversity in Furanoeremophilane Composition Produced by <i>Ligularia</i> Species (Asteraceae) in the Hengduan Mountains Area of China [in Japanese]
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A series of our studies on the chemical and genetic diversity of <i>Ligularia</i> species in the Hengduan Mountains area of China is reviewed. Diversities were detected in various species in terpenoid compositions and DNA sequences of the ITS region. Furanoeremophilanes were isolated from many species together with eremophilan-8-ones. Samples of some species such as <i>L. virgaurea</i> were grouped into two or more chemotypes, while <i>L. cymbulifera</i> and <i>L. cyathiceps</i> were uniform. Complex diversity was found in <i>L. kanaitzensis</i>. A hypothesis that the production of furanoeremophilanes is ecologically advantageous was proposed. Production of terpenoids in <i>L. duciformis</i> and related species were suggested to be acquired by hybridization which may be one of the major pathways of the evolution of <i>Ligularia</i>. Some taxonomically close species, such as <i>L. lamarum</i> and <i>L. subspicata</i>, were indistinguishable in both the root chemicals and the ITS sequences.
- Journal of Synthetic Organic Chemistry, Japan
Journal of Synthetic Organic Chemistry, Japan 72(6), 717-725, 2014
The Society of Synthetic Organic Chemistry, Japan