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Molecules 2015, 20(9), 16375-16387; doi:10.3390/molecules200916375

Separation and Identification of Four New Compounds with Antibacterial Activity from Portulaca oleracea L.

Basic research department of Jiamusi College, Heilongjiang University of Chinese Medicine, No. 39 Guang Hua Street, Qian Jin District, Jia Mu Si 154100, China
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Author to whom correspondence should be addressed.
Academic Editor: Peter J. Rutledge
Received: 21 July 2015 / Revised: 14 August 2015 / Accepted: 28 August 2015 / Published: 10 September 2015
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Abstract

The Portulaca oleracea L. (P. oleracea) has been used to treat bacillary dysentery for thousands of years in China. Pharmacology studies on P. oleracea have also showed its significant antibacterial effects on the enteropathogenic bacteria, which might reveal the treatment of P. oleracea in cases of bacillary dysentery to some extent. To date, however, the therapeutic basis of P. oleracea treating on bacillary dysentery remains unknown. We determined the antibacterial effective fraction of P. oleracea in a previous study. The current study, which is based on our previous study, was first designed to isolate, identify and screen antibacterial active constituents from P. oleracea. As a result, four new compounds (14), portulacerebroside B (1), portulacerebroside C (2), portulacerebroside D (3) and portulaceramide A (4) along with five known compounds (59) were isolated, and structures were established by their physico-chemical constants and spectroscopic analysis. The antibacterial activities against common enteropathogenic bacteria were evaluated for all compounds and the new compounds 14 showed significant antibacterial effect on enteropathogenic bacteria in vitro, which might contribute to revealing the treatment of P. oleracea in cases of bacillary dysentery. View Full-Text
Keywords: Portulaca oleracea L.; antibacterial activity; ceramides; cerebrosides; enteropathogenic bacteria Portulaca oleracea L.; antibacterial activity; ceramides; cerebrosides; enteropathogenic bacteria
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Lei, X.; Li, J.; Liu, B.; Zhang, N.; Liu, H. Separation and Identification of Four New Compounds with Antibacterial Activity from Portulaca oleracea L.. Molecules 2015, 20, 16375-16387.

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