Bacteriohopanepolyols in hydrothermal vent biogenic silicates

Biogenic silicates from the Taupo Volcanic Zone (North Island, New Zealand) are shown to contain a number of unusual polyfunctionalised bacteriohopanepolyols. Hopanoid fractions isolated from the Rotokawa hot spring (80–82 °C) contained significant amounts of 32,35-anhydrobacteriohopanetetrol and tw...

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Bibliographic Details
Published in:Organic geochemistry 2005-04, Vol.36 (4), p.663-672
Main Authors: Talbot, Helen M., Farrimond, Paul, Schaeffer, Philippe, Pancost, Richard D.
Format: Article
Language:English
Subjects:
Brackish
Earth sciences
Earth, ocean, space
Exact sciences and technology
Freshwater
Geochemistry
Marine
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Summary:Biogenic silicates from the Taupo Volcanic Zone (North Island, New Zealand) are shown to contain a number of unusual polyfunctionalised bacteriohopanepolyols. Hopanoid fractions isolated from the Rotokawa hot spring (80–82 °C) contained significant amounts of 32,35-anhydrobacteriohopanetetrol and two isomers of a related trihydroxylated compound. The origin of these unusual hopanoid side chains is unclear and they may result either from novel biosynthetic or diagenetic transformation pathways of known biohopanoid precursors such as bacteriohopanetetrol (via cyclisation) or reductive removal of adenine from adenosylhopane.
ISSN:0146-6380
1873-5290
DOI:10.1016/j.orggeochem.2004.10.015