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Identificación de nuevos sesterterpenoides acíclicos sedimentarios ampliamente distribuidos
Nature
|March 9, 2018
Resumen
Se identificaron nuevos sesterterpenoides acíclicos, productos naturales raros, en los sedimentos globales. Estos compuestos únicos muestran potencial como nuevas moléculas marcadoras biológicas en la geoquímica.
Área de la Ciencia:
- Geoquímica
- Química orgánica
- Biogeoquímica
Sus antecedentes:
- Los isoprenoides son productos naturales derivados de las unidades de isopreno, comunes en la naturaleza.
- Muchos isoprenoides sirven como fósiles químicos en los sedimentos, lo que indica actividad biológica y estrés geotérmico.
- Los sesterterpenoides acíclicos (25 carbonos) rara vez se encuentran tanto en la biosfera como en la geosfera.
Objetivo del estudio:
- Identificar y caracterizar nuevos sesterterpenoides acíclicos en varios tipos de sedimentos.
- Para explorar el potencial de estos compuestos recién descubiertos como marcadores biológicos.
Principales métodos:
- Análisis de hidrocarburos de sedimentos de agua dulce, marinos y hipersalinos recientes.
- Elucidación estructural de los compuestos sesterterpenoides identificados.
Principales resultados:
- Se identificó un grupo de nuevos sesterterpenoides como componentes principales de hidrocarburos en diversos sedimentos globales.
- Estos sesterterpenoides poseen características estructurales inusuales.
Conclusiones:
- Los nuevos sesterterpenoides identificados representan una nueva clase de compuestos marcadores biológicos potenciales.
- Sus estructuras únicas ofrecen nuevos conocimientos sobre los procesos biogeoquímicos y las comunidades microbianas.
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