2023-6-25 |
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New halimane and clerodane diterpenoids from Croton cnidophyllus |
Xun Wei, Jia-Luo Huang, Hua-Hua Gao, Fang-Yu Yuan, Gui-Hua Tang, Sheng Yin |
School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, People’s Republic of China |
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Abstract Three new halimane furanoditerpenoids (1-3) and three new clerodane furanoditerpenoids (4-6), along with seven known terpenoids including four pimarane diterpenoids (7-10) and three norisoprenoids (11-13) were isolated from the 95% EtOH extracts of the plants of Croton cnidophyllus. The 2D structures including absolute configuration of new furanoditerpenoids (1-6) were elucidated by analysis of their HRMS and NMR data as well as comparison of experimental and calculated ECD curves. Bioassay revealed that two compounds (8 and9) possessed certain inhibitory effects against NO production stimulated by LPS, with IC50 values of 19.00±1.76 and 21.61±1.11 μM, respectively.
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Keywords
Euphorbiaceae
Croton cnidophyllus
Furanoditerpenoids
Anti-inflammatory activity
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Fund:This work was supported by the National Natural Science Foundation of China (No. 82273804), the Science and Technology Program of Guangzhou, China (No. 202201011613), the Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) (No. SML2021SP301), the Open Program of Shenzhen Bay Laboratory (No. SZBL2021080601007), the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (No. 2017BT01Y093), and the Guangdong Basic and Applied Basic Research Foundation, China (No. 2021B1515140062). |
Corresponding Authors:
Gui-Hua Tang,E-mail:tanggh5@mail.sysu.edu.cn;Sheng Yin,E-mail:yinsh2@mail.sysu.edu.cn
E-mail: tanggh5@mail.sysu.edu.cn;yinsh2@mail.sysu.edu.cn
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Issue Date: 18 July 2023
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