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Source and Route of Pyrrolizidine Alkaloid Contamination in Tea Samples
Published on: September 28, 2022
A new piperidine alkaloid from the leaves of Microcos paniculata L
Gang Zhang1, Na Zhang2, Li Xu1
1a Technology and Engineering Center for Marine Biomedical Resource Utilization, Xiamen Medical College , Fujian Province University , Xiamen , P.R. China.
Abstract:
A new piperidine alkaloid, microcosamine C (1), and one known compound, microcosamine A (2) were isolated from the leaves of Microcos paniculata. Structure elucidation was carried out using HR-ESI-MS, 1D and 2D NMR spectroscopic methods and by comparison with data reported in the literature. The absolute configuration at the C-3 hydroxy group of 1 was established by a Mosher esterification procedure. Both the isolates (1-2) were evaluated for cytotoxicity against four selected tumour cell lines and showed only weak activity against RAW 264.7 cell line.
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