The occurrence of 19,28-bisnorlanostane derivatives in a plant fossil: A novel geochemical degradation process of triterpenoids

Details The occurrence of 19,28-bisnorlanostane derivatives in a plant fossil: A novel geochemical degradation process of triterpenoids The occurrence of 19,28-bisnorlanostane derivatives in a plant fossil: A novel geochemical degradation process of triterpenoids

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990gecoa..54.3253m&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 54, Issue 11, pp.3253-3257

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Scientific paper

Four novel triterpene ketones bearing 24-methyl-28-nor- and 24-methyl-19,28-bisnor-5 -lanostane skeletons were identified in a fossil of a stem of a plant belonging to the Lauraceae family. The structures of these compounds have been determined by comparison of their spectral data with those of authentic specimens derived from lanosterol and 24-methylenecycloartanol. This is the first finding of compounds bearing a 19,28-bisnorlanostane skeleton, which implies a novel possible microbiological pathway of degradation of lanostanes in the sedimentary environment.

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