Abstract
A new oleanane triterpenoid, 2α,3β,6β,23,29-pentahydroxyolean-12-en-28- oic acid (1), was isolated from the roots of Rhodomyrtus tomentosa, together with four known oleanane triterpenoids (2-5) and two known ursane triterpenoids (6-7). The structure of compound 1 was determined by extensive NMR and HR-ESI-MS data analysis. Compounds 4-5 showed cytotoxicity against PC12 cell lines at a concentration of 50 μM, and compound 1 exhibited moderate neuroprotective activity against corticosterone induced PC12 cell death at the same concentration.
Keywords:
Neuroprotective activity; Oleanane triterpenoid; Rhodomyrtus tomentosa.
MeSH terms
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Animals
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Cytotoxins / chemistry
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Cytotoxins / isolation & purification
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Humans
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Hydroxylation
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Magnetic Resonance Spectroscopy
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Molecular Structure
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Myrtaceae / chemistry*
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Neuroprotective Agents / chemistry
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Neuroprotective Agents / isolation & purification
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Oleanolic Acid / analogs & derivatives*
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Oleanolic Acid / chemistry
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Oleanolic Acid / isolation & purification
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PC12 Cells
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Plant Roots / chemistry*
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Rats
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Spectrometry, Mass, Electrospray Ionization
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Triterpenes / chemistry
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Triterpenes / isolation & purification*
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Triterpenes / pharmacology
Substances
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Cytotoxins
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Neuroprotective Agents
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Triterpenes
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oleanane
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ursane
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Oleanolic Acid