Video Experimental Relacionado
Updated: Feb 18, 2026
Source and Route of Pyrrolizidine Alkaloid Contamination in Tea Samples
Published on: September 28, 2022
Dos nuevos alcaloides de pirrol de Lanmaoa asiatica
Yan-Fang Li1, Jia-Dong Hou1, Li Li1
1Key Laboratory of Medicinal Chemistry For Natural Resource, Yunnan Key Laboratory of Research and Development for Natural Products, Institute of International Rivers and Eco-Security, Ministry of Education, Yunnan Characteristic Plant Extraction Laboratory Co., Ltd., School of Pharmacy and School of Chemical Science and Technology, Yunnan University, Kunming, China.
Abstract:
Two new pyrrole alkaloids, asiaticain A (1) and asiaticain B (2), two aromatic compounds 3-4, and one steroid 5 were isolated from Lanmaoa asiatica. The structural elucidation of the isolated compounds was determined by using NMR, MS, IR, and UV spectroscopy data and comparison with literature data. The absolute configuration (AC) of compound 2 was further determined by comparison of experimental and calculated ECD spectra. Notably, two alkaloids previously unreported were identified from L. asiatica. Compounds 1, 2, 4, and 5 had no significant effect on anti-inflammatory activity in the lactate dehydrogenase (LDH) inhibition assay.
