1
|
Jiang TT, Zhai LL, Wang ZJ, Wang XY, Li JN, Zhai YJ, Li D, Han WB. Polyketides with α-glucosidase inhibitory and neuroprotective activities from Aspergillus versicolor associated with Pedicularis sylvatica. Org Biomol Chem 2024; 22:4179-4189. [PMID: 38716654 DOI: 10.1039/d4ob00316k] [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: 05/23/2024]
Abstract
Aspergillus versicolor, an endophytic fungus associated with the herbal medicine Pedicularis sylvatica, produced four new polyketides, aspeversins A-D (1-2 and 5-6) and four known compounds, O-methylaverufin (2), aversin (3), varilactone A (7) and spirosorbicillinol A (8). Their structures were elucidated by extensive spectroscopic data analysis, and their absolute configurations were determined by calculated electronic circular dichroism (ECD) and Mo2(AcO)4-induced CD data. Compound 5 was found to exhibit α-glucosidase inhibitory activity with an IC50 value of 25.57 μM. An enzyme kinetic study indicated that 5 was a typical uncompetitive inhibitor toward α-glucosidase, which was supported by a molecular docking study. Moreover, compounds 1-3 and 5 also improved the cell viability of PC12 cells on a 1-methyl-4-phenylpyridinium (MPP+)-induced Parkinson's disease model, indicating their neuroprotective potential as antiparkinsonian agents.
Collapse
Affiliation(s)
- Ting-Ting Jiang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Liang-Liang Zhai
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Zi-Jue Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Xin-Yu Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Jian-Nan Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Yi-Jie Zhai
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Ding Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| | - Wen-Bo Han
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| |
Collapse
|
2
|
Fan J, Wei PL, Yin WB. Formation of Bridged Disulfide in Epidithiodioxopiperazines. Chembiochem 2024; 25:e202300770. [PMID: 38116907 DOI: 10.1002/cbic.202300770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 12/21/2023]
Abstract
Epidithiodioxopiperazine (ETP) alkaloids, featuring a 2,5-diketopiperazine core and transannular disulfide bridge, exhibit a broad spectrum of biological activities. However, the structural complexity has prevented efficient chemical synthesis and further clinical research. In the past few decades, many achievements have been made in the biosynthesis of ETPs. Here, we discuss the biosynthetic progress and summarize them as two comprehensible metabolic principles for better understanding the complex pathways of α, α'- and α, β'-disulfide bridged ETPs. Specifically, we systematically outline the catalytic machineries to install α, α'- and α, β'-disulfide by flavin-containing oxygenases. This concept would contribute to the medical and industrial applications of ETPs.
Collapse
Affiliation(s)
- Jie Fan
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, P. R. China
| | - Peng-Lin Wei
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, P. R. China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Wen-Bing Yin
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, P. R. China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| |
Collapse
|
3
|
Cheng M, Tang X, Shao Z, Li G, Yao Q. Cytotoxic Epipolythiodioxopiperazines from the Deep-Sea-Derived Fungus Exophiala mesophila MCCC 3A00939. JOURNAL OF NATURAL PRODUCTS 2023; 86:2342-2347. [PMID: 37807846 DOI: 10.1021/acs.jnatprod.3c00534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Four new aranotin-type epipolythiodioxopiperazines, graphiumins K-N (1-4), along with four known analogues (5-8), were isolated from the deep-sea-derived fungus Exophiala mesophila MCCC 3A00939. Their structures were elucidated by detailed interpretation of NMR and mass spectrometric data. The absolute configuration of the isolates was deduced by a single-crystal X-ray diffraction analysis and the comparisons of experimental electronic circular dichroism (ECD) data with calculated ECD spectra. Graphiumins K (1) and L (2) exhibited cytotoxic activities against the K562, H69AR, and MDA-MB-231 cancer cells with IC50 values ranging from 2.3 to 5.9 μM.
Collapse
Affiliation(s)
- Meimei Cheng
- School of Pharmaceutical Sciences & Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, National Key Laboratory of Advanced Drug Delivery System, Key Laboratory for Biotechnology Drugs of National Health Commission (Shandong Academy of Medical Sciences), Key Lab for Rare & Uncommon Diseases of Shandong Province, Jinan 250117, Shandong, People's Republic of China
| | - Xuli Tang
- College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, People's Republic of China
| | - Zongze Shao
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, People's Republic of China
| | - Guoqiang Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Laboratory of Marine Drugs and Biological Products, Pilot National Laboratory for Marine Science and Technology, Qingdao 266235, People's Republic of China
| | - Qingqiang Yao
- School of Pharmaceutical Sciences & Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, National Key Laboratory of Advanced Drug Delivery System, Key Laboratory for Biotechnology Drugs of National Health Commission (Shandong Academy of Medical Sciences), Key Lab for Rare & Uncommon Diseases of Shandong Province, Jinan 250117, Shandong, People's Republic of China
| |
Collapse
|
4
|
Shi T, Wang H, Li YJ, Wang YF, Pan Q, Wang B, Shang EL. Genus Acrostalagmus: A Prolific Producer of Natural Products. Biomolecules 2023; 13:1191. [PMID: 37627256 PMCID: PMC10452555 DOI: 10.3390/biom13081191] [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: 06/30/2023] [Revised: 07/26/2023] [Accepted: 07/28/2023] [Indexed: 08/27/2023] Open
Abstract
Acrostalagmus is known for its ability to produce numerous bioactive natural products, making it valuable in drug development. This review provides information on the sources, distribution, chemical structure types, biosynthesis, and biological activities of the compounds isolated from the genus Acrostalagmus in the family Plectosphaerellaceae from 1969 to 2022. The results show that 50% of the compounds isolated from Acrostalagmus are new natural products, and 82% of the natural products derived from this genus are from the marine Acrostalagmus. The compounds isolated from Acrostalagmus exhibit diverse structures, with alkaloids being of particular importance, accounting for 56% of the natural products derived from this genus. Furthermore, within the alkaloid class, 61% belong to the epipolythiodioxopiperazine family, highlighting the significance of epipolythiodioxopiperazine as a key characteristic structure within Acrostalagmus. Seventy-two percent of natural products derived from Acrostalagmus display bioactivities, with 50% of the bioactive compounds exhibiting more significant or comparable activities than their positive controls. Interestingly, 89% of potent active compounds are derived from marine fungi, demonstrating their promising potential for development. These findings underscore Acrostalagmus, particularly the marine-derived genus Acrostalagmusas, a valuable source of new bioactive secondary metabolites, and emphasize the vast resource importance of the ocean.
Collapse
Affiliation(s)
- Ting Shi
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (T.S.); (H.W.); (Y.-J.L.); (Y.-F.W.); (Q.P.)
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Han Wang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (T.S.); (H.W.); (Y.-J.L.); (Y.-F.W.); (Q.P.)
| | - Yan-Jing Li
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (T.S.); (H.W.); (Y.-J.L.); (Y.-F.W.); (Q.P.)
| | - Yi-Fei Wang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (T.S.); (H.W.); (Y.-J.L.); (Y.-F.W.); (Q.P.)
| | - Qun Pan
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (T.S.); (H.W.); (Y.-J.L.); (Y.-F.W.); (Q.P.)
| | - Bo Wang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (T.S.); (H.W.); (Y.-J.L.); (Y.-F.W.); (Q.P.)
| | - Er-Lei Shang
- School of Life Sciences, Shandong University, Qingdao 266237, China
| |
Collapse
|
5
|
Yang J, Hui Y, Chen Z, Chen G, Song X, Sun Z, Han C, Chen W. Four Undescribed Pyranones from the Scutellaria formosana-Derived Endophytic Fungi Ascomycota sp. FAE17. Molecules 2023; 28:5388. [PMID: 37513260 PMCID: PMC10383492 DOI: 10.3390/molecules28145388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/07/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
Four undescribed pyranone derivatives, named ascomycopyrones A-D (1-4), as well as one known analogue simplicilopyrone (5) (this is the first study to report the absolute configuration), were isolated from the endophytic fungus Ascomycota sp. FAE17 derived from the flowers of Scutellaria formosa. The structures of these pyranones were identified by comprehensive spectroscopic and MS analyses, and the absolute configurations were determined by their experimental and quantum chemical electronic circular dichroism (ECD) calculations. All isolated compounds were tested for various bioactivities, including antibacterial, cytotoxic activity, and NO inhibitory activity. Unfortunately, none of the compounds showed significant bioactivities.
Collapse
Affiliation(s)
- Jianni Yang
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
| | - Yang Hui
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
| | - Zhaoxia Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
| | - Guangying Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
| | - Xiaoping Song
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
| | - Zhenfan Sun
- Key Laboratory of Medicinal and Edible Plants Resources of Hainan Province, Hainan Vocational University of Science and Technology, Haikou 571158, China
| | - Changri Han
- Key Laboratory of Medicinal and Edible Plants Resources of Hainan Province, Hainan Vocational University of Science and Technology, Haikou 571158, China
| | - Wenhao Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
| |
Collapse
|
6
|
Wang Y, Jia J, Wang Q, Wei Y, Yuan H. Secondary Metabolites from the Cultures of Medicinal Mushroom Vanderbylia robiniophila and Their Tyrosinase Inhibitory Activities. J Fungi (Basel) 2023; 9:702. [PMID: 37504691 PMCID: PMC10381909 DOI: 10.3390/jof9070702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/13/2023] [Accepted: 06/24/2023] [Indexed: 07/29/2023] Open
Abstract
Vanderbylia robiniophila (Huaier in Chinese) has been used as a traditional herbal medicine in China for over 1600 years. However, the secondary metabolites of V. robiniophila have not been systematically examined. Corresponding chemical investigation in this study led to the discovery of two new compounds, (22E, 24R)-6β, 7α-dimethoxyergosta-8(14), 22-diene-3β, 5α-diol (1) and vanderbyliolide A (8), along with eight known ones (2-7, 9-10). Their structures were determined by extensive spectroscopic analyses and electronic circular dichroism (ECD) calculations. The tyrosinase inhibitory activity of all isolated compounds was evaluated, and compound 10 showed a potential tyrosinase inhibitory effect with an IC50 value of 60.47 ± 2.63 μM. Kinetic studies of the inhibition reactions suggested that 10 provides the inhibitory ability on tyrosinase in an uncompetitive way.
Collapse
Affiliation(s)
- Yuxi Wang
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China
| | - Jinghui Jia
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China
- College of Life Sciences, Liaoning University, Shenyang 110036, China
| | - Qi Wang
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China
- School of Life Sciences and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yulian Wei
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China
| | - Haisheng Yuan
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China
- College of Life Sciences, Liaoning University, Shenyang 110036, China
- School of Life Sciences and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China
| |
Collapse
|
7
|
Zhai LL, Jiang TT, Zhang R, Li JN, Zhai YJ, Zhang Q, Li D, Han WB. Ergostane-type sterols and sesquiterpenes with anti-neuroinflammatory activity from a Nigrograna species associated with Clematis shensiensis. PHYTOCHEMISTRY 2023; 211:113690. [PMID: 37150432 DOI: 10.1016/j.phytochem.2023.113690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 04/14/2023] [Accepted: 04/20/2023] [Indexed: 05/09/2023]
Abstract
Nigrograna sp. LY66, an endophytic fungus associated with the herbal medicinal plant Clematis shensiensis, produced four undescribed steroids, nigergostanes A-D (1-4), including an unusual ketal-containing nigergostane (1), and four undescribed sesquiterpenoids decorated with cyclohexanone motifs, nigbisabolanes A-D (7-10), along with three known compounds, 23R-hydroxy-(20Z,24R)-ergosta-4,6,8(14),20(22)-tetraen-3-one (5), ergosta-5,7,22-trien-3β-ol (6), and curculonone A (11). The structures and absolute configurations of these undescribed compounds were confirmed using spectroscopic data (NMR and HRESIMS), modified Mosher's method, and ECD experiments. Additionally, compounds 5 and 8 displayed significant inhibition of nitric oxide generation in lipopolysaccharide-induced BV-2 microglial cells with IC50 values of 2.8 and 2.7 μM, respectively, and is thus more potent than that of the positive control, quercetin (IC50 = 8.77 μM). A molecular docking study revealed that 23-OH of 5 binds to the Y347 residue of inducible nitric oxide synthase (iNOS), whereas the 2-OH and 9,10-diol moieties of 8 bind to R381 and W463 and haeme residues of iNOS, respectively, which has rarely been reported in previous studies. These findings provide a set of undescribed lead compounds that can be developed into anti-neuroinflammatory agents.
Collapse
Affiliation(s)
- Liang-Liang Zhai
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Ting-Ting Jiang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Rong Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Jian-Nan Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Yi-Jie Zhai
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Qiang Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Ding Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Wen-Bo Han
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China.
| |
Collapse
|
8
|
Li X, Gong YX, Feng L, Wang XJ, Wang JW, Zhang AX, Tan NH, Wang Z. Neuropyrones A-E, five undescribed α-pyrone derivatives with tyrosinase inhibitory activity from the endophytic fungus Neurospora dictyophora WZ-497. PHYTOCHEMISTRY 2023; 207:113579. [PMID: 36586529 DOI: 10.1016/j.phytochem.2022.113579] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 12/26/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
Five undescribed α-pyrone derivatives, named neuropyrones A-E, were isolated from the endophytic fungus Neurospora dictyophora WZ-497 derived from the stems of Aster tataricus L. f. The structures of these α-pyrones with absolute configurations were determined by comprehensive spectroscopic analysis and computational calculations. All isolated compounds were tested for various bioactivities, including tyrosinase inhibitory activity. The results showed that neuropyrones A-C displayed potent inhibitory effects on tyrosinase with IC50 values of 0.38 ± 0.07, 0.49 ± 0.06, and 0.12 ± 0.01 mM, respectively, which were comparable to that of the positive control, kojic acid (IC50 = 0.14 ± 0.021 mM). A molecular docking study revealed the interaction between 3 and the His263, His85, Val283, Asn260, Phe264, and Val248 residues of tyrosinase.
Collapse
Affiliation(s)
- Xin Li
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Yuan-Xiang Gong
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Li Feng
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Xin-Jia Wang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Jing-Wen Wang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - An-Xin Zhang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Ning-Hua Tan
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
| | - Zhe Wang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
| |
Collapse
|
9
|
Krambeck K, Santos D, Sousa Lobo JM, Amaral MH. Benefits of skin application of piceatannol-A minireview. Australas J Dermatol 2023; 64:e21-e25. [PMID: 36264002 DOI: 10.1111/ajd.13937] [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: 06/21/2022] [Revised: 08/20/2022] [Accepted: 10/04/2022] [Indexed: 11/28/2022]
Abstract
The skin is the largest organ of the human body and has several functions such as barrier against external agents, the maintenance of temperature and homeostatic functions. Skin ageing is a natural process that can be influenced by environmental factors, intrinsic skin factors and lifestyle. UV light plays an important role in skin ageing and can cause spots, requiring the use of depigmenting agents. Nowadays, there is a great demand for ingredients that prevent skin ageing, with natural agents occupying a promising position. Among the natural agents, polyphenols, such as resveratrol and piceatannol, found in grapes, passion fruits and other fruits, have a huge relevance. Great benefits of piceatannol have been reported, so thus, this work focuses specifically on a review of the literature regarding the application of this polyphenol in skin care products. This polyphenol can be used in a wound-healing, or as anti-ageing, antioxidant, anti-acne and skin whitening, among other effects.
Collapse
Affiliation(s)
- Karolline Krambeck
- UCIBIO-Applied Molecular Biosciences Unit, MedTech-Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal.,Associate Laboratory i4HB-Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Delfim Santos
- UCIBIO-Applied Molecular Biosciences Unit, MedTech-Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal.,Associate Laboratory i4HB-Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - José M Sousa Lobo
- UCIBIO-Applied Molecular Biosciences Unit, MedTech-Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal.,Associate Laboratory i4HB-Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Maria Helena Amaral
- UCIBIO-Applied Molecular Biosciences Unit, MedTech-Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal.,Associate Laboratory i4HB-Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Porto, Portugal
| |
Collapse
|
10
|
Umer SM, Solangi M, Khan KM, Saleem RSZ. Indole-Containing Natural Products 2019-2022: Isolations, Reappraisals, Syntheses, and Biological Activities. Molecules 2022; 27:7586. [PMID: 36364413 PMCID: PMC9655573 DOI: 10.3390/molecules27217586] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/28/2022] [Accepted: 11/02/2022] [Indexed: 07/30/2023] Open
Abstract
Indole alkaloids represent a large subset of natural products, with more than 4100 known compounds. The majority of these alkaloids are biologically active, with some exhibiting excellent antitumor, antibacterial, antiviral, antifungal, and antiplasmodial activities. Consequently, the natural products of this class have attracted considerable attention as potential leads for novel therapeutics and are routinely isolated, characterized, and profiled to gauge their biological potential. However, data on indole alkaloids, their various structures, and bioactivities are complex due to their diverse sources, such as plants, fungi, bacteria, sponges, tunicates, and bryozoans; thus, isolation methods produce an incredible trove of information. The situation is exacerbated when synthetic derivatives, as well as their structures, bioactivities, and synthetic schemes, are considered. Thus, to make such data comprehensive and inform researchers about the current field's state, this review summarizes recent reports on novel indole alkaloids. It deals with the isolation and characterization of 250 novel indole alkaloids, a reappraisal of previously reported compounds, and total syntheses of indole alkaloids. In addition, several syntheses and semi-syntheses of indole-containing derivatives and their bioactivities are reported between January 2019 and July 2022.
Collapse
Affiliation(s)
- Syed Muhammad Umer
- Department of Chemistry and Chemical Engineering, SBASSE, Lahore University of Management Sciences, Sector-U, DHA, Lahore 54792, Pakistan
| | - Mehwish Solangi
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Khalid Mohammed Khan
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 31441, Dammam 31441, Saudi Arabia
| | - Rahman Shah Zaib Saleem
- Department of Chemistry and Chemical Engineering, SBASSE, Lahore University of Management Sciences, Sector-U, DHA, Lahore 54792, Pakistan
| |
Collapse
|
11
|
Ahmad T, Khan S, Ullah N. Recent Advances in the Catalytic Asymmetric Friedel-Crafts Reactions of Indoles. ACS OMEGA 2022; 7:35446-35485. [PMID: 36249392 PMCID: PMC9558610 DOI: 10.1021/acsomega.2c05022] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Functionalized chiral indole derivatives are privileged and versatile organic frameworks encountered in numerous pharmaceutically active agents and biologically active natural products. The catalytic asymmetric Friedel-Crafts reaction of indoles, catalyzed by chiral metal complexes or chiral organocatalysts, is one of the most powerful and atom-economical approaches to access optically active indole derivatives. Consequently, a wide range of electrophilic partners including α,β-unsaturated ketones, esters, amides, imines, β,γ-unsaturated α-keto- and α-ketiminoesters, ketimines, nitroalkenes, and many others have been successfully employed to achieve a plethora of functionalized chiral indole moieties. In particular, strategies for C-H functionalization in the phenyl of indoles require incorporation of a directing or blocking group in the phenyl or azole ring of indole. The discovery of chiral catalysts which can control enantiodiscrimination has gained a great deal of attention in recent years. This review will provide an updated account on the application of the asymmetric Friedel-Crafts reaction of indoles in the synthesis of diverse chiral indole derivatives, covering the timeframe from 2011 to today.
Collapse
Affiliation(s)
- Tauqir Ahmad
- Chemistry
Department, King Fahd University of Petroleum
and Minerals, Dhahran 31261, Saudi Arabia
| | - Sardaraz Khan
- Chemistry
Department, King Fahd University of Petroleum
and Minerals, Dhahran 31261, Saudi Arabia
| | - Nisar Ullah
- Chemistry
Department, King Fahd University of Petroleum
and Minerals, Dhahran 31261, Saudi Arabia
- The
Center for Refining & Advanced Chemicals, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| |
Collapse
|
12
|
Wang WJ, Liao LX, Huang ZD, Wei FT, Yang XL. Thiazolo[5,4- b]pyridine Alkaloid and Seven ar-Bisabol Sesquiterpenes Produced by the Endophytic Fungus Penicillium janthinellum. ACS OMEGA 2022; 7:35280-35287. [PMID: 36211040 PMCID: PMC9535718 DOI: 10.1021/acsomega.2c04434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
We investigated the secondary metabolites present in Penicillium janthinellum MPT-25, an endophytic fungus isolated from Taxus wallichiana var. chinensis (Pilger) Florin. Chemical characterization of the solid cultured extract resulted in the isolation of 11 compounds, including eight previously undescribed metabolites: a thiazolo[5,4-b]pyridine alkaloid, janthinedine A (1), and seven ar-bisabol sesquiterpenes, janthinepenes A-G (2-8). Their structures were elucidated by a combination of extensive spectroscopic methods, including single-crystal X-ray diffraction and ECD spectra. The antimicrobial activities of these compounds were evaluated against seven agricultural pathogenic fungi and eight clinically drug-resistant bacteria.
Collapse
|
13
|
Chemical structures and anti-tyrosinase activity of the constituents from Elephantopus scaber L. Fitoterapia 2022; 162:105259. [PMID: 35931288 DOI: 10.1016/j.fitote.2022.105259] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 07/30/2022] [Accepted: 07/30/2022] [Indexed: 11/24/2022]
Abstract
Four undescribed compounds including one germacrane-type sesquiterpene lactones (1), alkaloid (2) along with two neolignans (3-4) were isolated from Elephantopus scaber L. Their structures and absolute configurations were elucidated unambiguously by means of 1D and 2D NMR spectroscopic data analysis, and quantum chemical electronic circular dichroism calculations, as well as single-crystal X-ray crystallography. Their anti-tyrosinase activities have been evaluated in vitro and compound 2 exhibited significant inhibitory activity. Furthermore, molecular docking was performed to study the interaction patterns between 2 and the tyrosinase.
Collapse
|
14
|
Wen J, Okyere SK, Wang S, Wang J, Xie L, Ran Y, Hu Y. Endophytic Fungi: An Effective Alternative Source of Plant-Derived Bioactive Compounds for Pharmacological Studies. J Fungi (Basel) 2022; 8:205. [PMID: 35205959 PMCID: PMC8877053 DOI: 10.3390/jof8020205] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/13/2022] [Accepted: 02/16/2022] [Indexed: 12/04/2022] Open
Abstract
Plant-associated fungi (endophytic fungi) are a biodiversity-rich group of microorganisms that are normally found asymptomatically within plant tissues or in the intercellular spaces. Endophytic fungi promote the growth of host plants by directly producing secondary metabolites, which enhances the plant's resistance to biotic and abiotic stresses. Additionally, they are capable of biosynthesizing medically important "phytochemicals" that were initially thought to be produced only by the host plant. In this review, we summarized some compounds from endophyte fungi with novel structures and diverse biological activities published between 2011 and 2021, with a focus on the origin of endophytic fungi, the structural and biological activity of the compounds they produce, and special attention paid to the exploration of pharmacological activities and mechanisms of action of certain compounds. This review revealed that endophytic fungi had high potential to be harnessed as an alternative source of secondary metabolites for pharmacological studies.
Collapse
Affiliation(s)
- Juan Wen
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.W.); (S.K.O.); (S.W.); (J.W.); (L.X.); (Y.R.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Samuel Kumi Okyere
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.W.); (S.K.O.); (S.W.); (J.W.); (L.X.); (Y.R.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Shu Wang
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.W.); (S.K.O.); (S.W.); (J.W.); (L.X.); (Y.R.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Jianchen Wang
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.W.); (S.K.O.); (S.W.); (J.W.); (L.X.); (Y.R.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Lei Xie
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.W.); (S.K.O.); (S.W.); (J.W.); (L.X.); (Y.R.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Yinan Ran
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.W.); (S.K.O.); (S.W.); (J.W.); (L.X.); (Y.R.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Yanchun Hu
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (J.W.); (S.K.O.); (S.W.); (J.W.); (L.X.); (Y.R.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
- New Ruipeng Pet Healthcare Group Co., Ltd., Shenzhen 518000, China
| |
Collapse
|
15
|
Sun YJ, Han RJ, Bai HY, Wang HJ, Li M, Si YY, Wang JM, Gong JH, Chen H, Feng WS. Structurally diverse biflavonoids from Dysosma versipellis and their bioactivity. RSC Adv 2022; 12:34962-34970. [DOI: 10.1039/d2ra06961j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
Five pairs of new biflavonoid enantiomers, (±)-dysosmabiflavonoids A–E (1–5), two new biflavonoids, dysosmabiflavonoids F–G (6–7), and four biosynthetically related precursors (8–11) were isolated from the roots and rhizomes of Dysosma versipellis.
Collapse
Affiliation(s)
- Yan-Jun Sun
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P. R. China, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
- Henan Research Center for Special Processing Technology of Chinese Medicine, Zhengzhou, 450046, P. R. China
| | - Rui-Jie Han
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P. R. China, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
| | - Hong-Yun Bai
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P. R. China, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
| | - Hao-jie Wang
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P. R. China, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
| | - Meng Li
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P. R. China, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
| | - Ying-Ying Si
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P. R. China, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
| | - Jun-Min Wang
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P. R. China, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
| | - Jian-Hong Gong
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P. R. China, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
| | - Hui Chen
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P. R. China, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
| | - Wei-Sheng Feng
- Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P. R. China, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China
| |
Collapse
|
16
|
Zhai YJ, Huo GM, Wei J, Lin LB, Zhang Q, Li JN, Chen X, Han WB, Gao JM. Structures and absolute configurations of butenolide derivatives from the isopod-associated fungus Pidoplitchkoviella terricola. PHYTOCHEMISTRY 2022; 193:112981. [PMID: 34653910 DOI: 10.1016/j.phytochem.2021.112981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 10/04/2021] [Accepted: 10/05/2021] [Indexed: 06/13/2023]
Abstract
In this research, twenty aromatic and branched aliphatic polyketides, including seven previously undescribed butenolide derivatives, piterriones A-G and one known analogue, along with twelve known altenusin derivatives, were isolated from the isopod-associated fungus Pidoplitchkoviella terricola. Their structures were elucidated by analysis of NMR (1D and 2D) and mass spectrometry data, and their absolute configurations were determined by Mosher's method, microscale derivatization, and comparison of their specific rotations and ECD spectra. Dihydroaltenuene B exhibited mushroom tyrosinase inhibitory activity with an IC50 value of 38.33 ± 1.59 μM, which was comparable to that of the positive control, kojic acid (IC50 = 39.72 ± 1.34 μM). A molecular-docking study disclosed the hydrogen bonding interactions between the 3-OH and 4'-OH of dihydroaltenuene B and the His244, Met280 and Gly281 residues of tyrosinase.
Collapse
Affiliation(s)
- Yi-Jie Zhai
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Guang-Ming Huo
- Institute of Medicinal Fungi, School of Food Science, Nanjing Xiaozhuang University, Nanjing, Jiangsu, 210017, People's Republic of China
| | - Jing Wei
- College of Biology Pharmacy & Food Engineering, Shangluo University, Shangluo, 726000, Shaanxi, People's Republic of China
| | - Li-Bin Lin
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Qiang Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Jian-Nan Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Xin Chen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Wen-Bo Han
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China.
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 3 Taicheng Road, Yangling, 712100, Shaanxi, China.
| |
Collapse
|
17
|
Liu YF, Yu SS. Survey of natural products reported by Asian research groups in 2020. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2021; 23:1115-1134. [PMID: 34825847 DOI: 10.1080/10286020.2021.2004131] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/04/2021] [Accepted: 11/04/2021] [Indexed: 06/13/2023]
Abstract
The new natural products reported in 2020 in peer-reviewed articles in journals with good reputations were reviewed and analyzed. The advances made by Asian research groups in the field of natural products chemistry in 2020 were summarized. Compounds with unique structural features and/or promising bioactivities originating from Asian natural sources were discussed based on their structural classification.
Collapse
Affiliation(s)
- Yan-Fei Liu
- 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, China
| | - Shi-Shan Yu
- 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, China
| |
Collapse
|
18
|
Park J, Lee J, Jang HS, Jeong B, Choi SY, Kim J, Kwon YS, Yang H. α-Glucosidic hydroquinone derivatives from Viburnum erosum. PHYTOCHEMISTRY 2021; 187:112782. [PMID: 33915418 DOI: 10.1016/j.phytochem.2021.112782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/11/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
Six undescribed compounds (1-6) were isolated from the leaves of Viburnum erosum along with four known compounds 7-10. The structures were determined by NMR and MS spectroscopic analyses, and their absolute configurations were established by chemical and spectroscopic methods. Compounds 1-6 were α-glucosidic hydroquinone derivatives with different linear monoterpenoid structures. Compounds 1-10 were also evaluated for their tyrosinase inhibitory activities, and 10 showed potent inhibition of tyrosinase enzyme with IC50 value of 37.9 μM compared to 47.6 μM of the positive control (β-arbutin).
Collapse
Affiliation(s)
- Jinyoung Park
- College of Pharmacy, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Jiho Lee
- College of Pharmacy, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Hyeon Seok Jang
- College of Pharmacy, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Birang Jeong
- College of Pharmacy, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Seong Yeon Choi
- College of Pharmacy, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Juyeol Kim
- College of Pharmacy, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Yong Soo Kwon
- College of Pharmacy, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Heejung Yang
- College of Pharmacy, Kangwon National University, Chuncheon, 24341, Republic of Korea; Bionsight, Inc., Chuncheon, 24341, Republic of Korea.
| |
Collapse
|
19
|
Zhai YJ, Li JN, Gao YQ, Gao LL, Wang DC, Han WB, Gao JM. Structurally Diverse Sesquiterpenoids with Anti-neuroinflammatory Activity from the Endolichenic Fungus Cryptomarasmius aucubae. NATURAL PRODUCTS AND BIOPROSPECTING 2021; 11:325-332. [PMID: 33963522 PMCID: PMC8141073 DOI: 10.1007/s13659-021-00299-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Accepted: 01/27/2021] [Indexed: 05/04/2023]
Abstract
Two new sterpurane sesquiterpenoids named sterpurol D (1) and sterpurol E (2), and one skeletally new sesquiterpene, cryptomaraone (3), bearing a 5,6-fused bicyclic ring system, along with five known ones, sterpurol A (4), sterpurol B (5), paneolilludinic Acid (6), murolane-2α, 9β-diol-3-ene (7) and (-)-10,11-dihydroxyfarnesol (8) were isolated from an endolichenic fungus Cryptomarasmius aucubae. The structures of the new compounds were elucidated by analysis of NMR spectroscopic spectra and HRESIMS data. The absolute configurations of 1 and 2 were established by spectroscopic data analysis and comparison of specific optical rotation, as well as the biosynthetic consideration. Additionally, compounds 1, 2, 4-6, and 8 showed significant nitric oxide (NO) production inhibition in Lipopolysaccharide (LPS)-induced BV-2 microglial cells with the IC50 values ranging from 9.06 to 14.81 μM.
Collapse
Affiliation(s)
- Yi-Jie Zhai
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Jian-Nan Li
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Yu-Qi Gao
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Lin-Lin Gao
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Da-Cheng Wang
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Wen-Bo Han
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| |
Collapse
|
20
|
Wu Y, Huo D, Chen G, Yan A. SAR and QSAR research on tyrosinase inhibitors using machine learning methods. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2021; 32:85-110. [PMID: 33517778 DOI: 10.1080/1062936x.2020.1862297] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 12/07/2020] [Indexed: 06/12/2023]
Abstract
Tyrosinase is a key rate-limiting enzyme in the process of melanin synthesis, which is closely related to human pigmentation disorders. Tyrosinase inhibitors can down-regulate tyrosinase to effectively reduce melanin synthesis. In this work, we conducted structure-activity relationship (SAR) study on 1097 diverse mushroom tyrosinase inhibitors. We applied five kinds of machine learning methods to develop 15 classification models. Model 5B built by fully connected neural networks and ECFP4 fingerprints achieved the highest prediction accuracy of 91.36% and Matthews correlation coefficient (MCC) of 0.81 on the test set. The applicability domains (AD) of classification models were defined by d S T D - P R O method. Moreover, we clustered the 1097 inhibitors into eight subsets by K-Means to figure out inhibitors' structural features. In addition, 10 quantitative structure-activity relationship (QSAR) models were constructed by four machine learning methods based on 813 inhibitors. Model 6 J, the best QSAR model, was developed by fully connected neural networks with 50 RDKit descriptors. It resulted in a coefficient of determination (r 2) of 0.770 and a root mean squared error (RMSE) of 0.482 on the test set. The AD of Model 6 J was visualized by Williams plot. The models built in this study can be obtained from the authors.
Collapse
Affiliation(s)
- Y Wu
- State Key Laboratory of Chemical Resource Engineering Department of Pharmaceutical Engineering, Beijing University of Chemical Technology , Beijing, P. R. China
| | - D Huo
- State Key Laboratory of Chemical Resource Engineering Department of Pharmaceutical Engineering, Beijing University of Chemical Technology , Beijing, P. R. China
| | - G Chen
- College of Life Science and Technology, Beijing University of Chemical Technology , Beijing, China
| | - A Yan
- State Key Laboratory of Chemical Resource Engineering Department of Pharmaceutical Engineering, Beijing University of Chemical Technology , Beijing, P. R. China
| |
Collapse
|
21
|
Macha L, Singh D, Rhee HJ, Ha HJ. Lewis acid-mediated synthesis of mono- and tris-indole adducts from chiral aziridines. Org Biomol Chem 2020; 18:9473-9482. [PMID: 33179699 DOI: 10.1039/d0ob01865a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lewis acid-mediated regio- and stereoselective nucleophilic addition of 2- or 3-substituted indoles to non-activated aziridine-2-carboxaldehydes in dioxane afforded 2-(indol-3-ylhydroxymethyl)aziridines whose ring opening with various nucleophiles rendered multi-substituted tryptamine derivatives. The reaction of the same aziridine-2-carboxaldehyde with three moles of indole in dichloromethane yielded tris-indole adducts β-(3,3'-bisindolyl)methyl (BIM) tryptamines from sequential steps including nucleophilic addition to aldehyde, Michael type Friedel-Crafts alkylation of the mono-adduct followed by regio- and stereoselective ring-opening of the aziridine ring.
Collapse
Affiliation(s)
- Lingamurthy Macha
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin 17035, Korea.
| | - Deepak Singh
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin 17035, Korea.
| | - Hyong-Jin Rhee
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin 17035, Korea.
| | - Hyun-Joon Ha
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin 17035, Korea.
| |
Collapse
|
22
|
Zhu M, Zhang X, Huang X, Wang H, Anjum K, Gu Q, Zhu T, Zhang G, Li D. Irregularly Bridged Epipolythiodioxopiperazines and Related Analogues: Sources, Structures, and Biological Activities. JOURNAL OF NATURAL PRODUCTS 2020; 83:2045-2053. [PMID: 32543845 DOI: 10.1021/acs.jnatprod.9b01283] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Epipolythiodioxopiperazines (ETPs) are a class of biologically active fungal secondary metabolites characterized by a bridged polysulfide piperazine ring. Regularly, the sulfide functionality is attached in the α-positions of the dioxopiperazine scaffold. However, ETPs possessing irregular sulfur bridges have rarely been explored. This review summarizes that 83 compounds of this subtype have been isolated and characterized since the discovery of gliovirin in 1982. Herein, particular emphasis is given to the isolation, chemistry, and biological activity of this subtype. For a better understanding, a relevant summary focusing on the source microorganisms and their taxonomy is provided and will help elucidate the fascinating chemistry and biology of these unusual ETPs.
Collapse
Affiliation(s)
- Meilin Zhu
- School of Pharmacy, Bengbu Medical College, 2600 Donghai Road, Bengbu 233030, Anhui, People's Republic of China
| | - Xuewen Zhang
- School of Pharmacy, Bengbu Medical College, 2600 Donghai Road, Bengbu 233030, Anhui, People's Republic of China
| | - Xuenan Huang
- School of Pharmacy, Bengbu Medical College, 2600 Donghai Road, Bengbu 233030, Anhui, People's Republic of China
| | - Haotian Wang
- School of Pharmacy, Bengbu Medical College, 2600 Donghai Road, Bengbu 233030, Anhui, People's Republic of China
| | - Komal Anjum
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Qianqun Gu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Tianjiao Zhu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Guojian Zhang
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, People's Republic of China
| | - Dehai Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, People's Republic of China
| |
Collapse
|