Non-isoprenoid macrocyclic glycerol diethers associated with authigenic carbonates

作者：Baudrand Marion; Grossi Vincent^*; Pancost Richard; Aloisi Giovanni

来源：Organic Geochemistry, 2010, 41(12): 1341-1344.

DOI：10.1016/j.orggeochem.2010.09.002

A series of novel non-isoprenoid macrocyclic glycerol diethers (McDGs) has been identified in authigenic carbonates formed from marine evaporites in Spain (Lorca Basin) and Egypt (Gemsa). They contain a C(32) diabolic acid-derived alkyl moiety (i.e. 15,16-dimethyltriacontane), with some components bearing additional methyl branching at C-7 and/or C-24, and show a similar distribution at each sampling site. These McGDs are suggested to have been synthesized by some extremophilic (thermophilic and/or halophilic) bacteria. Compound specific delta(13)C data indicate distinct carbon cycling by bacteria and archaea at both sites.

• 出版日期2010-12