New iridal-type triterpenoid derivatives with cytotoxic activities from Belamcanda chinensis |
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| Affiliation: | 1. State Key Laboratory of Natural Medicines & Jiangsu Provincial Key laboratory for TCM Evaluation and Translational Development, China Pharmaceutical University, Nanjing, Jiangsu 211198, China;2. State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People''s Republic of China;1. Jiangxi Provincial Key Laboratory for Pharmacodynamic Material Basis of Traditional Chinese Medicine, Ganjiang Chinese Medicine Innovation Center, Nanchang 330000, China;2. CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;3. Thermo Fisher Scientific Corporation, Shanghai 201206, China |
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| Abstract: | Eight new iridal-type triterpenoid derivatives, including two noriridals with ether bridge (1–2); two iridals lactone (3–4), four monocyclic iridals (5–8), together with five known iridals (9–14) were identified from the rhizome of Belamcanda chinensis. Their structures were elucidated on the basis of comprehensive spectroscopic methods and electronic circular dichroism (ECD) calculations. Bioassay results showed that belamcanoxide B (1) exhibited moderated cytotoxic activities against HCT-116 and MCF-7 cell lines with IC50 values of 5.58 and 3.35 μM. |
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| Keywords: | Iridal-type triterpenoids Cytotoxic activities |
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