Biological and Pharmaceutical Bulletin
Online ISSN : 1347-5215
Print ISSN : 0918-6158
ISSN-L : 0918-6158
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Anti-methicillin Resistant Staphylococcus aureus (MRSA) Compounds Isolated from Laurus nobilis
Nao OtsukaMei-Hua LiuSumiko ShiotaWakano OgawaTeruo KurodaTsutomu HatanoTomofusa Tsuchiya
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2008 Volume 31 Issue 9 Pages 1794-1797

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Abstract

We found that an extract from Laurus nobilis L. (Lauraceae) leaves showed antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA). We purified two flavonoids as the effective compounds and identified them as kaempferol 3-O-α-L-(2″,4″-di-E-p-coumaroyl)-rhamnoside (C2) and kaempferol 3-O-α-L-(2″-Z-p-coumaroyl-4″-E-p-coumaroyl)-rhamnoside (C3). Both compounds showed strong antibacterial activity not only against MRSA but also against vancomycin-resistant enterococci (VRE). There was low or no antibacterial activity of C2 and C3 for Streptococcus pneumoniae, Pseudomonas aeruginosa and Serratia marcescens.

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© 2008 The Pharmaceutical Society of Japan
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