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Abstract

Summary

While the precursors of short chain cheilanthanes have been proposed, the biological sources of extended cheilanthanes (>C30) remain unidentified. Here, we report detection of both short and extended cheilanthanes in sediment extracts from lakes and marine upwelling systems. Upon the Raney nickel desulfurization, an array of cheilanthane homologs up to C45 were released in both modern sediments and geological records. Importantly, the recognition of sulfurized extended cheilanthanes in the geological record and some modern analogues demonstrates that their biological sources continue to exist and can ultimately be identified.

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/content/papers/10.3997/2214-4609.202533177
2025-09-07
2026-02-13
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References

  1. Aquino Neto, F., Restle, A., Connan, J., Albrecht, P. and Ourisson, G., 1982. Novel tricyclic terpanes (C19, C20) in sediments and petroleums. Tetrahedron Letters, 23(19), pp.2027–2030.
    [Google Scholar]
  2. Azevedo, D.A., de Aquino Neto, F.R. and Simoneit, B.R.T., 1990. Mass spectrometric characteristics of a novel series of ring‐c monoaromatic tricyclic terpanes found in Tasmanian tasmanite. Organic mass spectrometry, 25(9), pp.475–480.
    [Google Scholar]
  3. Azevedo, D.A., Zinu, C.A., Neto, F.A. and Simoneit, B.R.T., 2001. Possible origin of acyclic (linear and isoprenoid) and tricyclic terpane methyl ketones in a Tasmanian tasmanite bitumen. Organic Geochemistry, 32(3), pp.443–448.
    [Google Scholar]
  4. De Grande, S.M.B., Neto, F.A. and Mello, M.R., 1993. Extended tricyclic terpanes in sediments and petroleums. Organic geochemistry, 20(7), pp.1039–1047.
    [Google Scholar]
  5. Dutta, S., Greenwood, P.F., Brocke, R., Schaefer, R.G. and Mann, U., 2006. New insights into the relationship between Tasmanites and tricyclic terpenoids. Organic Geochemistry, 37(1), pp.117–127.
    [Google Scholar]
  6. Kruge, M.A., Hubert, J.F., Akes, R.J. and Meriney, P.E., 1990. Biological markers in Lower Jurassic synrift lacustrine black shales, Hartford basin, Connecticut, USA. Organic Geochemistry, 15(3), pp.281–289.
    [Google Scholar]
  7. Liyanage, T.2023. Finding a family for an orphan biomarker: searching for modern, biological sources of cheilanthane molecular fossils. Doctoral dissertation (Canberra: Australian National University), submitted.
    [Google Scholar]
  8. Ma, J., Cui, X., Liu, X.L., Wakeham, S.G. and Summons, R.E., 2024. Rapid sulfurization obscures carotenoid distributions in modern euxinic environments. Geochimica et Cosmochimica Acta. 380, 180–193.
    [Google Scholar]
  9. Moldowan, J.M., Seifert, W.K. and Gallegos, E.J., 1983. Identification of an extended series of tricyclic terpanes in petroleum. Geochimica et Cosmochimica Acta, 47(8), pp.1531–1534.
    [Google Scholar]
  10. Neto, A., 1983. Occurrence and formation of tricyclic and tetracyclic terpanes in sediments and petroleums., p.659.
    [Google Scholar]
  11. Ourisson, G., Albrecht, P. and Rohmer, M., 1982. Predictive microbial biochemistry—from molecular fossils to procaryotic membranes. Trends in biochemical sciences, 7(7), pp.236–239.
    [Google Scholar]
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