Isolation and Structure of 1-Deoxybaccatin VI from the Root of Taxus chinensis, Rehd. var. mairei  被引量:2

Isolation and Structure of 1-Deoxybaccatin VI from the Root of Taxus chinensis, Rehd. var. mairei

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作  者:林海霞 李明 陈建民 陈民勤 

机构地区:[1]Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China [2]Research Center of Analysis and Measurement , Fudan University, Shanghai 200433, China

出  处:《Chinese Journal of Chemistry》2004年第7期751-756,共6页中国化学(英文版)

基  金:Project supported by the National Natural Science Foundation of China (No. 20377008) and Key Laboratory for Biodiversity Science & Ecological Engineering of Ministry of Education; Institute of Biodiversity Science; Fudan University.

摘  要:Deoxybaccatin VI (4,7,9,10,13-penta-acetoxy-2-benzoyloxy-5,20-epoxytax-11-ene) was isolated from the roots of Taxus chinensis, Rehd. var. mairei. The structural assignments of the compound were based on their spectral data, including 2D NMR experiments and chemical correlation. The X-ray crystallographic analysis of 1-deoxybaccatin VI provided unambiguous characterization for the structures. In the structure, the six-membered A ring exhibits boat conformation, the eight-membered B ring adopts boat-chair conformation, and the six-membered C ring exhibits a sofa conformation.Deoxybaccatin VI (4,7,9,10,13-penta-acetoxy-2-benzoyloxy-5,20-epoxytax-11-ene) was isolated from the roots of Taxus chinensis, Rehd. var. mairei. The structural assignments of the compound were based on their spectral data, including 2D NMR experiments and chemical correlation. The X-ray crystallographic analysis of 1-deoxybaccatin VI provided unambiguous characterization for the structures. In the structure, the six-membered A ring exhibits boat conformation, the eight-membered B ring adopts boat-chair conformation, and the six-membered C ring exhibits a sofa conformation.

关 键 词:crystal structure CONFORMATION 1-deoxybaccatin VI 

分 类 号:O629[理学—有机化学]

 

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