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Ceriopsins A-D, diterpenoids from Ceriops decandra.

Ammanamanchi S R Anjaneyulu1, Vadali Lakshmana Rao

  • 1School of Chemistry, Andhra University, Visakhapatnam-530 003, India. anjaneyuluasr@yahoo.com

Phytochemistry
|August 2, 2002
PubMed
Summary

Researchers discovered four new diterpenoids, named ceriopsins A-D, from the roots of Ceriops decandra. These compounds were isolated and structurally identified using advanced spectral data analysis.

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Ceriopsins F and G, diterpenoids from Ceriops decandra.

Phytochemistry·2003

Area of Science:

  • Natural Product Chemistry
  • Phytochemistry
  • Organic Chemistry

Background:

  • Ceriops decandra, a mangrove species, is a potential source of novel bioactive compounds.
  • Ethnobotanical uses of Ceriops species suggest the presence of unique chemical constituents.
  • Limited research exists on the diterpenoid profile of Ceriops decandra roots.

Purpose of the Study:

  • To isolate and characterize new diterpenoids from Ceriops decandra root extract.
  • To elucidate the chemical structures of the isolated compounds using spectroscopic methods.
  • To contribute to the understanding of the chemical diversity in mangrove ecosystems.

Main Methods:

  • Extraction of Ceriops decandra roots using methanol:dichloromethane (1:1) solvent mixture.
  • Fractionation of the ethyl acetate soluble portion via chromatographic techniques.
  • Structure elucidation of isolated compounds using physical and spectral data (NMR, MS, IR).

Main Results:

  • Isolation and identification of four new diterpenoids: ceriopsins A-D (1-4).
  • Compound 1: methyl 17-hydroxy-16-oxobeyeran-18-oate.
  • Compound 2: methyl 16(R)-16,17-dihydroxybeyeran-18-oate.
  • Compound 3: 1 beta,15(S)-isopimar-7-ene-1,15,16-triol.
  • Compound 4: 8,15(R)-epoxypimarane-1 beta,16-diol.

Conclusions:

  • The chemical investigation of Ceriops decandra roots yielded four novel diterpenoids.
  • The identified structures represent new additions to the known diterpenoid chemical space.
  • These findings highlight the potential of mangrove species as a source for novel natural products.

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