Objective: To study the chemical constituents from Lobelia chinensis.
Method: The constituents were extracted with 95% EtOH, partitioned with different solvents, and isolated and purified by silica gel column chromatography and crystallization, their structures were elucidated by physico-chemical properties and spectroscopic data.
Result: Seven compounds were isolated from the titled plant. They were identified as 5-hydroxy-4'-methoxyflavone-7-O-rutinoside (1), n-butyl-O-beta-D-fructopyranoside (2), 5,7-dimethoxycoumarin (3), cirsiumaldehyde (4), diosmetin (5), 5-hydroxymethyl-2-furancarboxaldehyde (6), and 6-hydroxy-7-methoxycoumarin (7).
Conclusion: Compounds 2-4, 6, and 7 were obtained from the titled plant for the first time.
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World J Microbiol Biotechnol
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Department of Environmental Microbiology, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, India.
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Department of Biomedical Sciences, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
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Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, PR China
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Department of Pharmacognosy, Semmelweis University, Üllői út 26, H-1085, Budapest, Hungary.
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