Hydrogen Isotope Profile of Methyl Groups in Miliacin (olean-18-en-3βol ME) by Natural Abundance Deuterium 2D-NMR Spectroscopy in liquid crystals

Philippe Berdagué 1 Philippe Lesot 1 Jérémy Jacob 2 Valery T. Terwilliger 2, 3 Claude Le Milbeau 2
1 ICMMO - Institut de Chimie Moléculaire et des Matériaux d'Orsay
2 ISTO - Institut des Sciences de la Terre d'Orléans - UMR7327
3 Department of Geography
Abstract : Compound-specific hydrogen isotope analyses are gaining increasing interest in paleoenvironmental studies. Numerous works are currently engaged aiming at refining the relationships between the D of individual compounds and the D of environmental waters, as well as other climatic and biological parameters. One of the directions proposed is to achieve D measurements on molecular biomarkers whose source organisms are relatively constrained. Pentacyclic triterpenes are such biomarkers. Because these biomarkers can undergo structural modifications during early diagenesis, it is therefore crucial to understand to which extent these modifications can be accompanied by a hydrogen isotope fractionation process.
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Philippe Berdagué, Philippe Lesot, Jérémy Jacob, Valery T. Terwilliger, Claude Le Milbeau. Hydrogen Isotope Profile of Methyl Groups in Miliacin (olean-18-en-3βol ME) by Natural Abundance Deuterium 2D-NMR Spectroscopy in liquid crystals. the 26th International Meeting on Organic Geochemistry (IMOG 2013), Sep 2013, Tenerife, Spain. 3p. ⟨insu-00843521⟩

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