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Updated: May 6, 2026

Source and Route of Pyrrolizidine Alkaloid Contamination in Tea Samples
Published on: September 28, 2022
[Chemical constituents of Paederia pertomentosa]
Hai-Qing Hu1, He-Dong Han, Yan Lin
1Ethnic Pharmaceutical Institute, Southwest University for Nationalities, Chengdu 610041, China. 1903388407@qq.com
Abstract:
Five constituents were extracted from the aerial part of Paederia pertomentosa and isolated by column chromatography. Their structures were elucidated by physicochemical properties and spectroscopic data analysis. The isolated compounds were identified as 1,2-dimethoxy-3,4-dihydroxyanthraquinone named as paederone (1), paederoside (2), deacetyl asperulosidic acid methyl ester (3), paederosidic acid (4) and methylpaederosidate (5). Compound 1 is a new compound which exhibits a significant inhibitory effect on Escherichia coli and Staphylococcus aureus. Compounds 2-5 were isolated from this plant for the first time.
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