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Yang PS, He XY, Li SS, Huang DQ, Shen SY, Liu XS, Ma YY, Dong M, Zhou M, Yang FX, Li YK. Three new chromones from the whole plants of Chamaecrista rotundifolia and their anti-rotavirus activities. Nat Prod Res 2024; 38:2428-2435. [PMID: 36787178 DOI: 10.1080/14786419.2023.2177286] [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: 09/15/2022] [Revised: 01/20/2023] [Accepted: 01/29/2023] [Indexed: 02/15/2023]
Abstract
Chamaecrista rotundifolia (C. rotundifolia) is a perennial herb of leguminosae, which increasingly being grown as a forage in China. In our search for original bioactive metabolites from Cassia plants, the phytochemical reinvestigation of the C. rotundifolia was carried out, which led to the isolation of three new (1-3) and six known (4-9) chromones. Their structures were confirmed by spectroscopic methods, including extensive 1D and 2D NMR techniques. Compounds 1-9 were evaluated for their anti-rotavirus activities, and the results revealed that compounds 1-9 exhibited potential anti-rotavirus activities with therapeutic index (TI) valves in the range of 12.0 ∼ 20.2, respectively.
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Affiliation(s)
- Pei-Song Yang
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - Xin-Yan He
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
- School of Animal Science and Technology, Southwest University, Chongqing, P. R. China
| | - Shan-Shan Li
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - De-Quan Huang
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - Si-Yu Shen
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - Xiao-Shan Liu
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - Yue-Yu Ma
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
- Yunnan Key Laboratory of Tobacco Chemistry, China Tobacco Yunnan Industrial Co., Ltd, Kunming, P.R. China
| | - Miao Dong
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - Min Zhou
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
| | - Feng-Xian Yang
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
- Yunnan Key Laboratory of Tobacco Chemistry, China Tobacco Yunnan Industrial Co., Ltd, Kunming, P.R. China
| | - Yin-Ke Li
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicinal, State Ethnic Affairs Commission, Yunnan Minzu University, Kunming, P. R. China
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Two New Anti-Tobacco Mosaic Virus Quinolin-2(1H)-Ones from the Twigs of Cassia auriculata. Chem Nat Compd 2023. [DOI: 10.1007/s10600-023-03928-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Yang WW, Xiao D, Yin GY, Deng LL, Zhang JD, Jiang JR, Xu L, Zhu LC, Zhou M, Hu QF, Mi QL, Shi JQ. Two New Antibacterial Anthraquinones from the Twigs of Cassia alata. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03696-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Indole Alkaloids and Chromones from the Stem Bark of Cassia alata and Their Antiviral Activities. Molecules 2022; 27:molecules27103129. [PMID: 35630603 PMCID: PMC9144915 DOI: 10.3390/molecules27103129] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 05/07/2022] [Accepted: 05/12/2022] [Indexed: 02/05/2023] Open
Abstract
The Cassia (Leguminosae) genus has attracted a lot of attention as a prolific source of alkaloids and chromones with diverse structures and biological properties. The aim of this study is to screen the antiviral compounds from Cassia alata. The extract of the stem bark of this plant was separated using silica gel, MCI, ODS C18, and Sephadex LH-20 column chromatography, as well as semi-preparative HPLC. As a result, three new indole alkaloids, alataindoleins A–C (1–3); one new chromone, alatachromone A (4); and a new dimeric chromone-indole alkaloid, alataindolein D (5) were isolated. Their structures were determined by means of HRESIMS and extensive 1D and 2D NMR spectroscopic studies. Interestingly, alataindolein D (5) represents a new type of dimeric alkaloid with an unusual N-2−C-16’ linkage, which is biogenetically derived from a chromone and an indole alkaloid via an intermolecular nucleophilic substitution reaction. Compounds 1–5 were tested for their anti-tobacco mosaic virus (TMV) and anti-rotavirus activities, and the results showed that compounds 2–4 showed high anti-TMV activities with inhibition rates of 44.4%, 66.5%, and 52.3%, respectively. These rates were higher than those of the positive control (with inhibition rate of 32.8%). Compounds 1 and 5 also showed potential anti-TMV activities with inhibition rates of 26.5% and 31.8%, respectively. In addition, compounds 1–5 exhibited potential anti-rotavirus activities with therapeutic index (TI) values in the range of 9.75~15.3. The successful isolation and structure identification of the above new compounds provided materials for the screening of antivirus drugs, and contributed to the development and utilization of C. alata.
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Chojnacka K, Skrzypczak D, Izydorczyk G, Mikula K, Szopa D, Witek-Krowiak A. Antiviral Properties of Polyphenols from Plants. Foods 2021; 10:foods10102277. [PMID: 34681326 PMCID: PMC8534698 DOI: 10.3390/foods10102277] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/03/2021] [Accepted: 09/21/2021] [Indexed: 02/06/2023] Open
Abstract
Polyphenols are active substances against various types of viral infections. Researchers have characterized methods of how to isolate polyphenols without losing their potential to formulate pharmaceutical products. Researchers have also described mechanisms against common viral infections (i.e., influenza, herpes, hepatitis, rotavirus, coronavirus). Particular compounds have been discussed together with the plants in the biomass in which they occur. Quercetin, gallic acid and epigallocatechin are exemplary compounds that inhibit the growth cycle of viruses. Special attention has been paid to identify plants and polyphenols that can be efficient against coronavirus infections. It has been proven that polyphenols present in the diet and in pharmaceuticals protect us from viral infections and, in case of infection, support the healing process by various mechanisms, i.e., they block the entry into the host cells, inhibit the multiplication of the virus, seal blood vessels and protect against superinfection.
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Zan N, Li J, He H, Hu D, Song B. Discovery of Novel Chromone Derivatives as Potential Anti-TSWV Agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:10819-10829. [PMID: 34516131 DOI: 10.1021/acs.jafc.1c03626] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A series of novel chromone derivatives containing dithioacetals were prepared, and their antiviral activity against tomato spotted wilt virus (TSWV) was studied. The results showed that compounds A1-A31 had good inhibitory activity against TSWV. The 3D-QSAR model was built to analyze the structure-activity relationship of the compounds. We further found that compounds A32 and A33 had excellent anti-TSWV activities based on the results of 3D-QSAR, which were better than the control agents ningnanmycin and ribavirin. To study the mode of action of these compounds on TSWV, the nucleocapsid protein of TSWV (TSWV N) was cloned, expressed, and purified in the study. The results of the microscale thermophoresis (MST) experiments indicate that compound A33 can better bind with TSWV N. The molecular docking experiment further indicated that the mode of action of the compound A33 is to inhibit the virus by blocking the combination of TSWV N and viral RNA. Therefore, this study has found that chromone compound A33 is a potential anti-TSWV agent that targets TSWV N.
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Affiliation(s)
- Ningning Zan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Jiao Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Hongfu He
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Deyu Hu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Baoan Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
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