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Ren J, Fang A, Jiao S, Li R, Huang Y, Ni X, Zhang Y, Ma Y, Li S, Li J. Lignans from the leaves of Styrax japonicus and their anti-inflammatory activity. Fitoterapia 2024; 172:105774. [PMID: 38097021 DOI: 10.1016/j.fitote.2023.105774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/12/2023] [Accepted: 12/07/2023] [Indexed: 12/21/2023]
Abstract
Five novel lignans, namely styraxjaponica A-E (1-5), together with eight known compounds (6-13) were isolated from the leaves of Styrax japonicus Siebold & Zucc. Their chemical structures were characterized by extensive analysis of 1D and 2D NMR, UV, IR, HRESIMS spectroscopic analysis as well as by comparison to the literature. The absolute configurations of the new compounds were further determined by quantum chemical electronic circular dichroism (ECD) calculations powered by time-dependent density functional theory (TDDFT). Moreover, the anti-inflammatory effects of compounds 1-5 in lipopolysaccharide (LPS)-induced RAW 264.7 cells were also evaluated by measuring nitric oxide (NO) concentrations. All compounds displayed significant anti-inflammatory activity without affecting cell viability in vitro.
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Affiliation(s)
- Jie Ren
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, PR China
| | - Aiqing Fang
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, PR China
| | - Shungang Jiao
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, PR China
| | - Rong Li
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, PR China
| | - Yuting Huang
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, PR China
| | - Xiaoting Ni
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, PR China
| | - Yunkun Zhang
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, PR China
| | - Yuan Ma
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, PR China
| | - Shunxiang Li
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, PR China; Hunan Engineering Technology Research Center for Bioactive Substance Discovery of Chinese Medicine, Changsha 410208, PR China; Hunan Province Sino-US International Joint Research Center for Therapeutic Drugs of Senile Degenerative Diseases, Changsha 410208, PR China
| | - Juan Li
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, PR China; Hunan Engineering Technology Research Center for Bioactive Substance Discovery of Chinese Medicine, Changsha 410208, PR China; Hunan Province Sino-US International Joint Research Center for Therapeutic Drugs of Senile Degenerative Diseases, Changsha 410208, PR China.
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