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Wei Y, Dong WH, Li W, Zeng J, Chen HQ, Huang SZ, Yang L, Mei WL, Wang YL, Guo ZY, Dai HF, Wang H. Six unprecedented 2-(2-phenethyl)chromone dimers from agarwood of Aquilaria filaria. Fitoterapia 2024; 175:105905. [PMID: 38479616 DOI: 10.1016/j.fitote.2024.105905] [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: 01/09/2024] [Revised: 03/05/2024] [Accepted: 03/08/2024] [Indexed: 03/17/2024]
Abstract
Six new dimeric 2-(2-phenylethyl)chromones (1-6) were successfully isolated from the ethanol extract of agarwood of Aquilaria filaria from Philippines under HPLC-MS guidance. Compounds 1-6 are all dimers formed by linking 5,6,7,8-tetrahydro-2-(2-phenylethyl)chromone and flindersia 2-(2-phenylethyl)chromone via a single ether bond, and the linkage site (C5-O-C8'') of compound 2 is extremely rare. A variety of spectroscopic methods were used to ascertain their structures, including extensive 1D and 2D NMR spectroscopic analysis, HRESIMS, and comparison with literature. The in vitro tyrosinase inhibitory and anti-inflammatory activities of each isolate were assessed. Among these compounds, compound 2 had a tyrosinase inhibition effect with an IC50 value of 27.71 ± 2.60 μM, and compound 4 exhibited moderate inhibition of nitric oxide production in lipopolysaccharide-stimulated RAW264.7 cells with an IC50 value of 35.40 ± 1.04 μM.
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Affiliation(s)
- Yuan Wei
- National Key Laboratory for Tropical Crop Breeding, International Joint Research Center of Agarwood, Hainan Engineering Research Center of Agarwood, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; Hubei Key Laboratory of Natural Product Research and Development (China Three Gorges University), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, PR China
| | - Wen-Hua Dong
- National Key Laboratory for Tropical Crop Breeding, International Joint Research Center of Agarwood, Hainan Engineering Research Center of Agarwood, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Wei Li
- National Key Laboratory for Tropical Crop Breeding, International Joint Research Center of Agarwood, Hainan Engineering Research Center of Agarwood, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Jun Zeng
- National Key Laboratory for Tropical Crop Breeding, International Joint Research Center of Agarwood, Hainan Engineering Research Center of Agarwood, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Hui-Qin Chen
- National Key Laboratory for Tropical Crop Breeding, International Joint Research Center of Agarwood, Hainan Engineering Research Center of Agarwood, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Sheng-Zhuo Huang
- National Key Laboratory for Tropical Crop Breeding, International Joint Research Center of Agarwood, Hainan Engineering Research Center of Agarwood, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Li Yang
- National Key Laboratory for Tropical Crop Breeding, International Joint Research Center of Agarwood, Hainan Engineering Research Center of Agarwood, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Wen-Li Mei
- National Key Laboratory for Tropical Crop Breeding, International Joint Research Center of Agarwood, Hainan Engineering Research Center of Agarwood, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Ya-Li Wang
- National Key Laboratory for Tropical Crop Breeding, International Joint Research Center of Agarwood, Hainan Engineering Research Center of Agarwood, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Zhi-Yong Guo
- Hubei Key Laboratory of Natural Product Research and Development (China Three Gorges University), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, PR China
| | - Hao-Fu Dai
- National Key Laboratory for Tropical Crop Breeding, International Joint Research Center of Agarwood, Hainan Engineering Research Center of Agarwood, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Hao Wang
- National Key Laboratory for Tropical Crop Breeding, International Joint Research Center of Agarwood, Hainan Engineering Research Center of Agarwood, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China.
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2
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Begum K, Das A, Ahmed R, Akhtar S, Kulkarni R, Banu S. Genome-wide analysis of respiratory burst oxidase homolog ( Rboh) genes in Aquilaria species and insight into ROS-mediated metabolites biosynthesis and resin deposition. FRONTIERS IN PLANT SCIENCE 2024; 14:1326080. [PMID: 38405033 PMCID: PMC10893762 DOI: 10.3389/fpls.2023.1326080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 12/18/2023] [Indexed: 02/27/2024]
Abstract
Respiratory burst oxidase homolog (Rboh) generates reactive oxygen species (ROS) as a defense response during biotic and abiotic stress. In Aquilaria plants, wounding and fungal infection result in biosynthesis and deposition of secondary metabolites as defense responses, which later form constituents of fragrant resinous agarwood. During injury and fungal invasion, Aquilaria tree generates ROS species via the Rboh enzymes. Despite the implication of Rboh genes in agarwood formation, no comprehensive genomic-level study of the Rboh gene family in Aquilaria is present. A systematic illustration of their role during stress and involvement in initiating signal cascades for agarwood metabolite biosynthesis is missing. In this study, 14 Rboh genes were retrieved from genomes of two Aquilaria species, A. agallocha and A. sinensis, and were classified into five groups. The promoter regions of the genes had abundant of stress-responsive elements. Protein-protein network and in silico expression analysis suggested their functional association with MAPK proteins and transcription factors such as WRKY and MYC2. The study further explored the expression profiles of Rboh genes and found them to be differentially regulated in stress-induced callus and stem tissue, suggesting their involvement in ROS generation during stress in Aquilaria. Overall, the study provides in-depth insight into two Rboh genes, AaRbohC and AaRbohA, highlighting their role in defense against fungal and abiotic stress, and likely during initiation of agarwood formation through modulation of genes involved in secondary metabolites biosynthesis. The findings presented here offer valuable information about Rboh family members, which can be leveraged for further investigations into ROS-mediated regulation of agarwood formation in Aquilaria species.
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Affiliation(s)
- Khaleda Begum
- Department of Bioengineering and Technology, Gauhati University, Guwahati, Assam, India
| | - Ankur Das
- Department of Bioengineering and Technology, Gauhati University, Guwahati, Assam, India
| | - Raja Ahmed
- Department of Bioengineering and Technology, Gauhati University, Guwahati, Assam, India
| | - Suraiya Akhtar
- Department of Bioengineering and Technology, Gauhati University, Guwahati, Assam, India
| | - Ram Kulkarni
- Symbiosis School of Biological Sciences, Symbiosis International (Deemed University), Pune, India
| | - Sofia Banu
- Department of Bioengineering and Technology, Gauhati University, Guwahati, Assam, India
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3
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Yang ZH, Fang HB, Tao CT, Jiao YB, Cheng YX. Eight new 2-(2-phenylethyl)chromone derivatives from agarwood of Aquilaria sinensis with anti-inflammatory activity. Fitoterapia 2023; 169:105564. [PMID: 37295754 DOI: 10.1016/j.fitote.2023.105564] [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: 03/31/2023] [Revised: 06/02/2023] [Accepted: 06/03/2023] [Indexed: 06/12/2023]
Abstract
Eight previously unknown 2-(2-phenylethyl)chromone derivatives, called aquichromones A - E (1-3, 5 and 6) and 8-epi-aquichromone C (4), including two pairs of enantiomers [(±)-1 and (±)-2] were isolated from the agarwood of Aquilaria sinensis. The structures and absolute stereochemistry of these natural products were elucidated by using spectroscopic and computational methods. The result of biological assay showed that two members of this group, 4 and 5, have significant dose-dependent anti-inflammatory activity.
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Affiliation(s)
- Zhong-Hui Yang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China; Institute for Inheritance-Based Innovation of Chinese Medicine, Marshall Laboratory of Biomedical Engineering, School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen 518060, People's Republic of China
| | - Hong-Bin Fang
- Institute for Inheritance-Based Innovation of Chinese Medicine, Marshall Laboratory of Biomedical Engineering, School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen 518060, People's Republic of China
| | - Cheng-Tian Tao
- Institute for Inheritance-Based Innovation of Chinese Medicine, Marshall Laboratory of Biomedical Engineering, School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen 518060, People's Republic of China
| | - Ya-Bin Jiao
- Institute for Inheritance-Based Innovation of Chinese Medicine, Marshall Laboratory of Biomedical Engineering, School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen 518060, People's Republic of China
| | - Yong-Xian Cheng
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China; Institute for Inheritance-Based Innovation of Chinese Medicine, Marshall Laboratory of Biomedical Engineering, School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen 518060, People's Republic of China.
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4
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Huang XL, Cai D, Gao P, Wang JG, Cheng YX. Aquilariperoxide A, a Sesquiterpene Dimer from Agarwood of Aquilaria sinensis with Dual Antitumor and Antimalarial Effects. J Org Chem 2023; 88:8352-8359. [PMID: 37195129 DOI: 10.1021/acs.joc.3c00372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Aquilariperoxide A (1), an unprecedented sesquiterpene dimer characterized by a dioxepane ring connecting two sesquiterpene units via a C-C bond, was isolated from agarwood of Aquilaria sinensis-containing resins. The structure was elucidated by spectroscopic and computational methods. A bioassay revealed that 1 significantly inhibits cell proliferation and migration in human cancer cells. The mechanism of 1 against cancer cells was briefly discussed by analysis of RNA sequence data and epithelial-mesenchymal transition. Besides, the antimalarial activity of 1 was also evaluated.
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Affiliation(s)
- Xiao-Ling Huang
- Institute for Inheritance-Based Innovation of Chinese Medicine, School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, PR China
| | - Dan Cai
- Institute for Inheritance-Based Innovation of Chinese Medicine, School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, PR China
| | - Peng Gao
- Artemisinin Research Center, and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Ji-Gang Wang
- Artemisinin Research Center, and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Yong-Xian Cheng
- Institute for Inheritance-Based Innovation of Chinese Medicine, School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, PR China
- Guangdong Key Laboratory of Functional Substances in Medicinal Edible Resources and Healthcare Products, School of Life Sciences and Food Engineering, Hanshan Normal University, Chaozhou 521041, PR China
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5
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Zhou H, Li XY, Fang HB, Jiang HZ, Cheng YX. Five new sesquiterpenoids from agarwood of Aquilaria sinensis. Beilstein J Org Chem 2023; 19:998-1007. [PMID: 37404799 PMCID: PMC10315886 DOI: 10.3762/bjoc.19.75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 06/06/2023] [Indexed: 07/06/2023] Open
Abstract
Five new eudesmane-type sesquiterpenoids (aquisinenoids F-J (1-5)) and five known compounds (6-10) were isolated from the agarwood of Aquilaria sinensis. Their structures, including absolute configurations, were identified by comprehensive spectroscopic analyses and computational methods. Inspired by our previous study on the same kinds of skeletons, we speculated that the new compounds have anticancer and anti-inflammatory activities. The results did not show any activity, but they revealed the structure-activity relationships (SAR).
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Affiliation(s)
- Hong Zhou
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, PR China
| | - Xu-Yang Li
- Institute for Inheritance-Based Innovation of Chinese Medicine, Marshall Laboratory of Biomedical Engineering, School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, 518055, China
| | - Hong-Bin Fang
- Institute for Inheritance-Based Innovation of Chinese Medicine, Marshall Laboratory of Biomedical Engineering, School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, 518055, China
| | - He-Zhong Jiang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, PR China
| | - Yong-Xian Cheng
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, PR China
- Institute for Inheritance-Based Innovation of Chinese Medicine, Marshall Laboratory of Biomedical Engineering, School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, 518055, China
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6
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Jiao S, Huang H, Wang L, Wuken S, Liu C, Kang L, Liu J, Hu Z, Tu P, Huang L, Chai X. Alashanines A-C, Three Quinone-Terpenoid Alkaloids from Syringa pinnatifolia with Cytotoxic Potential by Activation of ERK. J Org Chem 2023. [PMID: 37178146 DOI: 10.1021/acs.joc.3c00369] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Three quinone-terpenoid alkaloids, alashanines A-C (1-3), possessing an unprecedented 6/6/6 tricyclic conjugated backbone and quinone-quinoline-fused characteristic, were isolated from the peeled stems of Syringa pinnatifolia. Their structures were elucidated by analysis of extensive spectroscopic data and quantum chemical calculations. A hypothesis of biosynthesis pathways for 1-3 was proposed on the basis of the potential precursor iridoid and benzoquinone. Compound 1 exhibited antibacterial activities against Bacillus subtilis and cytotoxicity against HepG2 and MCF-7 human cancer cell lines. The results of the cytotoxic mechanism revealed that compound 1 induced apoptosis of HepG2 cells through activation of ERK.
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Affiliation(s)
- Shungang Jiao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Huiming Huang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Lifang Wang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Shana Wuken
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Changxin Liu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Lulu Kang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Juan Liu
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, P. R. China
| | - Zhongdong Hu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Pengfei Tu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Luqi Huang
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, P. R. China
| | - Xingyun Chai
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
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Liu J, Li JJ, Yan YM, Bai M, Cheng YX. COX-2 and iNOS inhibitory abietane diterpenoids from Pinus yunnanensis exudates. Fitoterapia 2023; 164:105376. [PMID: 36450314 DOI: 10.1016/j.fitote.2022.105376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/23/2022] [Accepted: 11/25/2022] [Indexed: 11/29/2022]
Abstract
Pinuskesiols A-F (1-6), six new structurally diverse abietane diterpenoids were isolated from Pinus yunnanensis resins. Their structures including absolute configurations were characterized by using spectroscopic and computational methods. All the compounds bear a carbonyl functionality at C-4 with 1 and 2 behaving as a lactone thereof. The isopropyl group is attached to C-13 via O-atom in 3. In addition, the presence of a Δ5(6) double bond and a ketone at C-7 makes 2 a large conjugated system. Biological evaluation revealed that 1, 2, and 4 could concentration-dependently inhibit iNOS and COX-2 expression in lipopolysaccharide-induced RAW 264.7 cells with 2 to be the most active toward COX-2 inhibition.
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Affiliation(s)
- Jing Liu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, PR China; Institute for Inheritance-Based Innovation of Chinese Medicine, School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, PR China
| | - Ji-Jun Li
- Institute for Inheritance-Based Innovation of Chinese Medicine, School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, PR China
| | - Yong-Ming Yan
- Institute for Inheritance-Based Innovation of Chinese Medicine, School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, PR China
| | - Ming Bai
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, PR China.
| | - Yong-Xian Cheng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, PR China; Institute for Inheritance-Based Innovation of Chinese Medicine, School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, PR China.
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Chen L, Liu Y, Li Y, Yin W, Cheng Y. Anti-Cancer Effect of Sesquiterpene and Triterpenoids from Agarwood of Aquilaria sinensis. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27165350. [PMID: 36014586 PMCID: PMC9413513 DOI: 10.3390/molecules27165350] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/13/2022] [Accepted: 08/18/2022] [Indexed: 11/23/2022]
Abstract
Two new guaiane sesquiterpenes, aquisinenoids A and B (1 and 2), two new eudesmane-type sesquiterpenoids, aquisinenoids C and D (3 and 4), one new cucurbitacin, aquisinenoid E (5), and five known cucurbitacins (6–10) were isolated from agarwood of Aquilaria sinensis. The structures of these new compounds, including their absolute configurations, were characterized by spectroscopic and computational methods. The biological evaluation showed that compounds 3 and 9 had an anti-cancer effect on most of the cancer cells at 5 μM, especially in human breast cancer cells. Interestingly, the new compound 3 exhibited more sensitivity on cancer cells than normal cells, highlighting its potential as a novel anti-cancer agent. Mechanically, compound 3 treatment increased the ROS generation and triggered apoptosis of human breast cancer cells.
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Affiliation(s)
- Lili Chen
- State Key Lab of Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Yunyun Liu
- Health Science Center, Institute for Inheritance-Based Innovation of Chinese Medicine, School of Pharmaceutical Sciences, Shenzhen University, Shenzhen 518060, China
| | - Yifei Li
- Health Science Center, Institute for Inheritance-Based Innovation of Chinese Medicine, School of Pharmaceutical Sciences, Shenzhen University, Shenzhen 518060, China
| | - Wu Yin
- State Key Lab of Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing 210023, China
- Correspondence: (W.Y.); (Y.C.); Tel.: +86-0755-2690-2073 (Y.C.)
| | - Yongxian Cheng
- Health Science Center, Institute for Inheritance-Based Innovation of Chinese Medicine, School of Pharmaceutical Sciences, Shenzhen University, Shenzhen 518060, China
- Correspondence: (W.Y.); (Y.C.); Tel.: +86-0755-2690-2073 (Y.C.)
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Hill RA, Sutherland A. Hot off the Press. Nat Prod Rep 2022. [PMID: 35929527 DOI: 10.1039/d2np90026b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A personal selection of 32 recent papers is presented covering various aspects of current developments in bioorganic chemistry and novel natural products such as hyperispirone A from Hypericum beanii.
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Affiliation(s)
- Robert A Hill
- School of Chemistry, Glasgow University, Glasgow, UK, G12 8QQ.
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