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Chemical and Genetic Diversity of Some Ligularia Species (Compositae) in Northwestern Yunnan and Southwestern Sichuan of China

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复旦学报（自然科学版） 2005年第5期44卷 742-743页

作者： Chiaki Kuroda Ryo Hanait Xun Gong Yuemao Shen motoo tori Department of Chemistry and Department of Life Science Rikkyo University Nishi-Ikebukuro Toshima-kuTokyo171-8501 Japan Kunming Institute of Botany Chinese Academy of Science Kunming 654204 China Faculty of Pharmaceutical Sciences Tokushima Bunri University Yamashiro-cho Tokushima 770-8514 Japan

Ligularia Cass., (Compositae) is a highly diversified genus, and more than 100 species of which are distributed in the eastern Qinghai-Tibet Plateau and adjacent areas. Ligularia species have been studied with respect to secondary metabolites, and many sesquiterpenes of the furanoeremophilane type have been isolated from them. In order to find correlates among these variations, and ultimately understand the diversity-generating mechanism of Ligularia species in the Hengduan Mountains, we initiated an extensive study that uses furanoeremophilanes as a chemical index and the DNA sequence as a genetic index. Furanoeremophilanes have been detected conventionally by Ehrlich' s test, which has been used in a search for novel natural products. As for the DNA sequence, we determined the nucleotide sequence of the atpB-rbcL intergenic region in the present study.

关键词：中国云南四川橐吾植物生物化学遗传多样性

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Carbon-Carbon Bond Formation Reactions in the Preparation of Hydrindanones

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复旦学报（自然科学版） 2005年第5期44卷 811-812页

作者： motoo tori Masakazu Sono Weihui Zhong Sachiko Onishi Atsuko Hashimoto Yasuyo Nakashiba Faculty of Pharmaceutical Sciences Tokushima Bunri University Yamashiro-cho Tokushima 770-8514 Japan Present address. Colleage of Pharmaceutical Scienoes Zhejiang University of Technology Hangzhou 310014 China.

Carbon-carbon bond formation reactions are highly important in organic chemistry, because these reactions may be used to construct complicated molecules. Samarium diiodide is known to be a one-electron reducing agent and recently used in many organic reactions. A radicals is postulated as an intermediate, which may be formed by direct reduction of halides, carbonyls and other functional groups.

关键词：碳碳结合二碘化钐有机化学分析结构还原三酮

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