期刊
TETRAHEDRON LETTERS
卷 52, 期 9, 页码 1031-1035出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2010.12.095
关键词
Marine natural products; Phaeophyceae; Dictyotaceae; C-40 bis-diterpene; Xenicane; Crenulide
资金
- council of Provence-Alpes-Cote d'Azur region
A phytochemical investigation of a Mediterranean brown alga (Dictyota sp.) led to the isolation of a novel C-40 bis-diterpene, named dictyotadimer A. The chemical structure of this unusual dissymmetric dimer, characterized by a C-C linkage between two different xenicane units, was elucidated by 1D and 2D NMR analyses together with HR-ESI mass spectrometry. The relative configuration of the two diterpenoid components was determined by NOESY NMR correlations and molecular modeling. A plausible biogenetic pathway of dictyotadimer A was also proposed. (C) 2010 Elsevier Ltd. All rights reserved.
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