7,11-cyclobotryococca-5,12,26-triene, a novel botryococcene-related hydrocarbon occurring in natural environments

被引:11
作者
Behrens, A
Schaeffer, P
Bernasconi, S
Albrecht, P [1 ]
机构
[1] Univ Strasbourg 1, Inst Chim, Lab Geochim Organ, CNRS,UMR 7509, F-67000 Strasbourg, France
[2] ETH Zentrum, Inst Geol, CH-8092 Zurich, Switzerland
关键词
D O I
10.1021/ol0056980
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
With the unambiguous structural characterization of 7,11-cyclobotryococca-5,12,26-triene 1 by NMR, a novel C-30 botryococcene-related hydrocarbon skeleton bearing a midchain five-membered ring has been identified in organic-rich sediments from Lake Cadagno (Switzerland), This compound may originate from the green alga Botryococcus braunii (race B) widespread in recent and past environments. Alternatively, it may also be a yet unreported lipid of green sulfur photosynthetic bacteria (Chlorobiaceae) or a microbial transformation product of the farnesol produced by the latter.
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页码:1271 / 1274
页数:4
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