Abstract
Five oleanane-type triterpene glycosides including three new ones, proceraosides E-G (1-3), were isolated from a MeOH-soluble extract of Albizia procera bark. The structures of 1-3 were determined by use of NMR spectra, HRESIMS, and chemical methods. Compounds 1-5 exhibited inhibitory activities against the proliferation of the A549, SKBR3, AZ521, and HL60 human cancer cell lines (IC50 0.28-1.8 μM). Additionally, the apoptosis-inducing activity of compound 2 was evaluated by Hoechst 33342 staining and flow cytometry, while the effects of 2 on the activation of caspases-9, -8, and -3 in HL60 cells were revealed by Western blot analysis.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Albizzia / chemistry*
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Antineoplastic Agents, Phytogenic / chemistry
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Antineoplastic Agents, Phytogenic / isolation & purification*
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Antineoplastic Agents, Phytogenic / pharmacology
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Apoptosis / drug effects
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Cell Line, Tumor
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Drug Screening Assays, Antitumor
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Glycosides / chemistry
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Glycosides / isolation & purification*
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Glycosides / pharmacology
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HL-60 Cells
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Humans
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Magnetic Resonance Spectroscopy
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Melanins / antagonists & inhibitors*
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Melanins / biosynthesis
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Oleanolic Acid / chemistry
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Oleanolic Acid / isolation & purification*
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Oleanolic Acid / pharmacology
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Plant Bark / chemistry
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Plant Extracts / chemistry
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Plant Extracts / isolation & purification
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Plant Extracts / pharmacology*
Substances
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Antineoplastic Agents, Phytogenic
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Glycosides
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Melanins
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Plant Extracts
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Oleanolic Acid