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Journal of Asian Natural Products Research Volume 9, 2007 - Issue 4
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Original Articles

Norisoprenoids from Ulvalactuca

Y. Sun School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, China
,
Y.-C. Zhan School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, China
,
Y. Sha Department of Instrumental Analysis, Shenyang Pharmaceutical University, Shenyang, 110016, China
&
Y.-H. Pei School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, ChinaCorrespondence[email protected]
Pages 321-325 | Received 28 Oct 2005, Accepted 12 Mar 2006, Published online: 03 Jul 2007
 
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Abstract

Five norisoprenoids were isolated from the green marine alga Ulva lactuca. Two new compounds were assigned to (3R,5R,6R,7E)3,5,6-trihydroxy-7-megastigmen-9-one (1) and (3S,5R,6S,7E)3,5,6-trihydroxy-7-megastigmen-9-one (2). The structures and absolute configurations of the five compounds were determined by analyses of NMR, MS and circular dichroism (CD).

Acknowledgements

This work was supported by 863 Hi-Tech Research and Development Program of China (Grant No.2003AA620403) and the Fund for the 973-project from Ministry of Science and Technology (Grant No.G1998051100), China.

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