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Compounds with neuroprotective activity from the medicinal plant Machilus thunbergii

Compounds with neuroprotective activity from the medicinal plant Machilus thunbergii

Journal of Enzyme Inhibition and Medicinal Chemistry 24(5): 1117-1121

The dichloromethane fraction of the bark of Machilus thunbergii Sieb. et Zucc. (Lauraceae) significantly protected primary cultures of rat cortical cells exposed to the excitotoxic amino acid, L-glutamate. Through the activity-guided isolation from the CH(2)Cl(2) fraction, (+)-9'-hydroxygalbelgin (1), isogalcatin B (2), (7S,8S,8'R)-3',4'-dimethoxy-3,4,-methylenedioxylignan-7-ol (3), 1-hydroxy-7-hydroxymethyl-6-methoxyxanthone (4), 5,7-dimethoxy-3',4'-methylenedioxyflavan-3-ol (5), (+)-(3S,4S,6R)-3,6-dihydroxypiperitone (6), protocatechuic acid methyl ester (7) and tyrosol (8) were obtained. All of them had significant neuroprotective activities against glutamate-induced neurotoxicity in primary cultures of rat cortical cells at concentrations ranging from 0.1 microM to 10.0 microM and were comparable to MK-801, a well-known inhibitor of glutamate receptor.

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Accession: 052269458

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PMID: 19555186

DOI: 10.1080/14756360802632971

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