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Year : 2016  |  Volume : 12  |  Issue : 46  |  Page : 332-336

A new octadecenoic acid derivative from Caesalpinia gilliesii flowers with potent hepatoprotective activity

1 Department of Pharmacognosy, Faculty of Pharmacy, October 6 University, Giza, Egypt
2 Department of Phytochemistry and Plant Systematic, National Research Center (NRC), 33 EL Bohouth st., Dokki, P.O.12622, Egypt
3 Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Helwan, Cairo, Egypt
4 Department of Pharmaceutical Biology, Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, ImNeuenheimer Feld 364, 69120 Heidelberg, Germany

Correspondence Address:
Michael Wink
Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, ImNeuenheimer Feld 364, 69120 Heidelberg
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0973-1296.185752

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Background: Caesalpinia gilliesii Hook is an ornamental shrub with showy yellow flowers. It was used in folk medicine due to its contents of different classes of secondary metabolites. In our previous study, dichloromethane extract of C. gilliesii flowers showed a good antioxidant activity. Aim of the Study: Isolation and identification of bioactive hepatoprotective compounds from C. gilliesii flowers dichloromethane fraction. Materials and Methods: The hepatoprotective activity of dichloromethane fraction and isolated compounds were studied in CCl4-intoxicated rat liver slices by measuring liver injury markers (alanine aminotransferase, aspartate aminotransferase and glutathione [GSH]). All compounds were structurally elucidated on the basis of electron ionization-mass spectrometry, one- and two-dimensional nuclear magnetic resonance. Results: A new 12,13,16-trihydroxy-14(Z)-octadecenoic acid was identified in addition to the known β-sitosterol-3-O-butyl, daucosterol, isorhamnetin, isorhamnetin-3-O-rhamnoside, luteolin-7,4'-dimethyl ether, genistein-5-methyl ether, luteolin-7-O-rhamnoside, isovanillic acid, and p-methoxybenzoic acid. Dichloromethane fraction and isorhamnetin were able to significantly protect the liver against intoxication. Moreover, the dichloromethane fraction and the isolated phytosterols induced GSH above the normal level. Conclusion: The hepatoprotective activity of C. gilliesii may be attributed to its high content of phytosterols and phenolic compounds.

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