1
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Liang L, Liu Z, Xu W, Mao X, Wang Y. Discovery and identification of natural alkaloids with potential to impact insulin resistance syndrome in Cyclocarya paliurus. (Batal) leaves by UPLC-QTOF-MS combined with HepG2 cells. Food Res Int 2024; 190:114545. [PMID: 38945558 DOI: 10.1016/j.foodres.2024.114545] [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: 04/09/2024] [Revised: 05/14/2024] [Accepted: 05/25/2024] [Indexed: 07/02/2024]
Abstract
Cyclocarya paliurus (Batal.) leaves, which contain a range of bioactive compounds, have been used as a traditional Chinese medicine homologous food since ancient times. However, there is a paucity of literature on comprehensive studies of alkaloids in the leaves of Cyclocarya paliurus (Batal.). For the first time, this study aimed to discover and identify alkaloids extracted from Cyclocarya paliurus (Batal.) leaves by ultra-high performance liquid chromatography-quadrupole-time-of-flight tandem mass spectrometry (UPLC-QTOF-MS). A total of ten alkaloids have been identified from Cyclocarya paliurus (Batal.) leaves based on accurate mass spectra (mass accuracy, isotopic spacing and distribution) and comparison to fragmentation spectra reported in the literature. In vitro, alkaloids alleviated insulin resistance by increasing glucose consumption and glycogen content in insulin resistance HepG2 cells. The RNA-seq and western blotting results showed that alkaloids could upregulate the expression of phosphatidylinositol 3-kinase (PI3K), and increase the phosphorylation of insulin receptor protein kinase B (AKT). This study not only clarified the chemical constituents and revealed that diverse alkaloids also presented from Cyclocarya paliurus (Batal.) leaves, also, it will provide chemical information on potential compounds for developing new drugs.
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Affiliation(s)
- Lu Liang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Zhongwei Liu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Weixiang Xu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - XueJin Mao
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
| | - Yuanxing Wang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
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2
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Gu YJ, Luo MP, Yuan H, Liu GK, Wang SG. Photocatalytic Enantioselective Radical Cascade Multicomponent Minisci Reaction of β-Carbolines Using Diazo Compounds as Radical Precursors. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2402272. [PMID: 38639395 DOI: 10.1002/advs.202402272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 03/20/2024] [Indexed: 04/20/2024]
Abstract
Here, a photocatalytic asymmetric multicomponent cascade Minisci reaction of β-carbolines with enamides and diazo compounds is reported, enabling an effective enantioselective radical C─H functionalization of β-carbolines with high yields and enantioselectivity (up to 83% yield and 95% ee). This enantioselective multicomponent Minisci protocol exhibits step economy, high chemo-/enantio-selective control, and good functional group tolerance, allowing access to a variety of valuable chiral β-carbolines. Notably, diazo compounds are suitable radical precursors in enantioselective cascade radical reactions. Moreover, the efficiency and practicality of this approach are demonstrated by the asymmetric synthesis of bioactive compounds and natural products.
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Affiliation(s)
- Yi-Jie Gu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, 518055, P. R. China
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, P. R. China
| | - Mu-Peng Luo
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, 518055, P. R. China
| | - Hua Yuan
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, P. R. China
| | - Guo-Kai Liu
- School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
| | - Shou-Guo Wang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, 518055, P. R. China
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3
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Li J, Ni H, Zhang W, Lai Z, Jin H, Zeng L, Cui S. A multicomponent reaction for modular assembly of indole-fused heterocycles. Chem Sci 2024; 15:5211-5217. [PMID: 38577354 PMCID: PMC10988590 DOI: 10.1039/d4sc00522h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 03/03/2024] [Indexed: 04/06/2024] Open
Abstract
Indoles are privileged chemical entities in natural products and drug discovery. Indole-fused heterocycles, particularly seven-membered ones, have received increasing attention due to their distinctive chemical characteristics and wide spectrum of bioactivities. However, the synthetic access to these compounds is highly limited. Herein, we report a unique multicomponent reaction (MCR) for modular assembly of indole-fused seven-membered heterocycles. In this process, indole, formaldehyde and amino hydrochloride could assemble rapidly to yield indole-fused oxadiazepines, and another addition of sodium thiosulphate would furnish indole-fused thiadiazepines. The biological evaluation disclosed the promising anticancer activity of these compounds. Furthermore, this MCR could be applicable in the late-stage and selective modifications of peptides. Therefore, this work provides a powerful strategy for indole functionalization and valuable tool for construction of seven-membered heterocycles.
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Affiliation(s)
- Jiaming Li
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Hao Ni
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Weiwei Zhang
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Zhencheng Lai
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Huimin Jin
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Linwei Zeng
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Sunliang Cui
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
- Jinhua Institute of Zhejiang University Jinhua Zhejiang Province 321299 China
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4
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Mousa M, Adly ME, Mahmoud AM, El-Nassan HB. Synthesis of Tetrahydro-β-carboline Derivatives under Electrochemical Conditions in Deep Eutectic Solvents. ACS OMEGA 2024; 9:14198-14209. [PMID: 38559915 PMCID: PMC10975637 DOI: 10.1021/acsomega.3c09790] [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: 12/07/2023] [Revised: 02/21/2024] [Accepted: 02/28/2024] [Indexed: 04/04/2024]
Abstract
In this work, a novel, green, and atom-efficient method for the synthesis of tetrahydro-β-carboline derivatives using electrochemistry (EC) in deep eutectic solvents (DESs) was reported. The EC reaction conditions were optimized to achieve the highest yield. The experimental design was also optimized to perform the reaction in a two-step, one-pot reaction, thereby the time, workup procedure, and solvents needed were all reduced. The new approach achieved our strategy as EC served to decrease the time of reaction, eliminate the use of hazardous catalysts, and lower the energy required for the synthesis of the targeted compounds. On the other side, DESs were used as catalysts, in situ electrolytes, and noninflammable green solvents. The scope of the reaction was investigated using different aromatic aldehydes. Finally, the scalability of the reaction was investigated using a gram-scale reaction that afforded the product in an excellent yield.
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Affiliation(s)
- Mohamed
O. Mousa
- Pharmaceutical
Organic Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Mina E. Adly
- Pharmaceutical
Organic Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Amr M. Mahmoud
- Pharmaceutical
Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Hala B. El-Nassan
- Pharmaceutical
Organic Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
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5
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Yang XY, Yang JM, Wu B. TMSOTf-Promoted Cyclization of Indole-2-methyl-α-aminoketones: Access to 4-Aryl-Substituted β-Carbolines. Org Lett 2024; 26:1105-1109. [PMID: 38289176 DOI: 10.1021/acs.orglett.3c04382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
An efficient method to construct 4-aryl-substituted β-carbolines from indole-2-methyl-α-aminoketones via a TMSOTf-promoted annulation reaction was reported. High yield along with wide substrate scope and functional group tolerance make this reaction applicable to build various highly potential bioactive β-carboline derivatives.
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Affiliation(s)
- Xin-Yu Yang
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
| | - Jin-Ming Yang
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
| | - Bin Wu
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
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6
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Xiao D, Lu L, Liang B, Xiong Z, Xu X, Chen WH. Identification of 1,3,4-oxadiazolyl-containing β-carboline derivatives as novel α-glucosidase inhibitors with antidiabetic activity. Eur J Med Chem 2023; 261:115795. [PMID: 37688939 DOI: 10.1016/j.ejmech.2023.115795] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 08/30/2023] [Accepted: 09/04/2023] [Indexed: 09/11/2023]
Abstract
In this study, we designed and synthesized a novel class of 1,3,4-oxadiazolyl-containing β-carboline derivatives, i.e., compounds f1∼f35 as potential α-glucosidase inhibitors. All the synthesized compounds possessed outstanding α-glucosidase inhibitory activity with the IC50 values in the range of 3.07-15.49 μM, representing that they are 36∼183-fold more active than a positive control, acarbose (IC50 = 564.28 μM). Among them, compound f26 exhibited the highest α-glucosidase inhibitory activity (IC50 = 3.07 μM) and was demonstrated to function as a reversible and noncompetitive inhibitor. Mechanistic studies by means of 3D fluorescence spectra, CD spectra and molecular docking suggested that complexation of compound f26 with α-glucosidase through hydrogen bonds and hydrophobic interactions, led to changes in the conformation and secondary strictures of α-glucosidase and further the inhibition of the enzymatic activity. In vivo results showed that oral administration of compound f26 (50 mg/kg/day) could obviously reduce the levels of fasting blood glucose and improve glucose tolerance and dyslipidemia in diabetic mice. The present findings suggest that compound f26 is exploitable as a potential lead compound for the development of new α-glucosidase inhibitors with antidiabetic activity.
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Affiliation(s)
- Di Xiao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Li Lu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Bingwen Liang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Zhuang Xiong
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China
| | - Xuetao Xu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Wen-Hua Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
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7
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Liu L, Wu H, Long Y, Yang X, Du C, Xu Y, Ji Q. Novel spiro[pyrrolidine-2,3'-quinoline]-2'-one derivatives containing piperazine fragment as potential chitin synthase inhibitors and antifungal agents: Design, synthesis and biological evaluation. Eur J Med Chem 2023; 260:115777. [PMID: 37660485 DOI: 10.1016/j.ejmech.2023.115777] [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: 06/15/2023] [Revised: 08/02/2023] [Accepted: 08/29/2023] [Indexed: 09/05/2023]
Abstract
A series of spiro[pyrrolidine-2,3'-quinoline]-2'-one derivatives were designed and synthesized for the discovery of novel antifungal drugs. The bioactivities of all derivatives were screened by evaluating their inhibitory effects against chitin synthase (CHS) and antimicrobial activities in vitro. Enzyme inhibition experiments showed that all the synthesized compounds inhibited the chitin synthase. Compounds 4d, 4k, 4n and 4o showed inhibitory effects against CHS with IC50 values which were close to that of the control drug (polyoxin B). The results of enzyme kinetics experiment showed that these compounds were non-competitive inhibitors of chitin synthase (Ki of compound 4o is 0.14 mM). Antimicrobial experiments showed that these compounds exhibited moderate to excellent antifungal activity against pathogenic fungal strains while the compounds showed little potency against bacteria. Among them, compounds 4d, 4f, 4k and 4n showed stronger antifungal activities against C. albicans than those of fluconazole and polyoxin B. Compounds 4f, 4n and 4o showed better antifungal activities against A. flavus than those of fluconazole and polyoxin B. Compound 4d showed similar activity to that of fluconazole and stronger activity than those of polyoxin B against C. neoformans and A. fumigatus. It is also showed that these compounds have the potency against drug-resistant fungal variants. The results of sorbitol protection assay and evaluation of antifungal activity against micafungin-resistant strains experiment further illustrated that these compounds inhibited the synthesis of chitin of fungal cell wall. Drug combination experiments showed that these compounds had synergistic or additive effects when combined with fluconazole or polyoxin B. The synergistic effects with polyoxin B further confirmed the compounds were non-competitive inhibitors of chitin synthase. Additionally, docking studies showed that these compounds had strong affinity with chitin synthase from C. albicans (CaChs2). These results indicate that the target of these synthesized compounds is chitin synthase, and these compounds had excellent antifungal activity while possessed the potency against drug-resistant fungal variants.
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Affiliation(s)
- Lige Liu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Hu Wu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Yan Long
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Xinlong Yang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Chuanbiao Du
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Yajie Xu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Qinggang Ji
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
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8
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Li J, Lai Z, Zhang W, Zeng L, Cui S. Modular assembly of indole alkaloids enabled by multicomponent reaction. Nat Commun 2023; 14:4806. [PMID: 37558669 PMCID: PMC10412628 DOI: 10.1038/s41467-023-40598-y] [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: 04/01/2023] [Accepted: 08/03/2023] [Indexed: 08/11/2023] Open
Abstract
Indole alkaloids are one of the largest alkaloid classes, proving valuable structural moiety in pharmaceuticals. Although methods for the synthesis of indole alkaloids are constantly explored, the direct single-step synthesis of these chemical entities with broad structural diversity remains a formidable challenge. Herein, we report a modular assembly of tetrahydrocarboline type of indole alkaloids from simple building blocks in a single step while showing broad compatibility with medicinally relevant functionality. In this protocol, the 2-alkylated or 3-alkylated indoles, formaldehyde, and amine hydrochlorides could undergo a one-pot reaction to deliver γ-tetrahydrocarbolines or β-tetrahydrocarbolines directly. A wide scope of these readily available starting materials is applicable in this process, and numerous structural divergent tetrahydrocarbolines could be achieved rapidly. The control reaction and deuterium-labelling reaction are conducted to probe the mechanism. And mechanistically, this multicomponent reaction relies on a multiple alkylamination cascade wherein an unusual C(sp3)-C(sp3) connection was involved in this process. This method could render rapid access to pharmaceutically interesting compounds, greatly enlarge the indole alkaloid library and accelerate the lead compound optimization thus facilitating drug discovery.
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Affiliation(s)
- Jiaming Li
- Institute of Drug Discovery and Design, National Key Laboratory of Advanced Drug Delivery and Release Systems, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zhencheng Lai
- Institute of Drug Discovery and Design, National Key Laboratory of Advanced Drug Delivery and Release Systems, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Weiwei Zhang
- Institute of Drug Discovery and Design, National Key Laboratory of Advanced Drug Delivery and Release Systems, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Linwei Zeng
- Institute of Drug Discovery and Design, National Key Laboratory of Advanced Drug Delivery and Release Systems, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Sunliang Cui
- Institute of Drug Discovery and Design, National Key Laboratory of Advanced Drug Delivery and Release Systems, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China.
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9
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Li XL, Sun Y, Yin Y, Zhan S, Wang C. A bacterial-like Pictet-Spenglerase drives the evolution of fungi to produce β-carboline glycosides together with separate genes. Proc Natl Acad Sci U S A 2023; 120:e2303327120. [PMID: 37467272 PMCID: PMC10372676 DOI: 10.1073/pnas.2303327120] [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: 02/27/2023] [Accepted: 06/27/2023] [Indexed: 07/21/2023] Open
Abstract
Diverse β-carboline (βC) alkaloids are produced by microbes, plants, and animals with myriad bioactivities and drug potentials. However, the biosynthetic mechanism of βCs remains largely elusive, especially regarding the hydroxyl and glucosyl modifications of βCs. Here, we report the presence of the bacterial-like Pictet-Spenglerase gene Fcs1 in the entomopathogenic Beauveria fungi that can catalyze the biosynthesis of the βC skeleton. The overexpression of Fcs1 in Beauveria bassiana led to the identification of six βC methyl glycosides, termed bassicarbosides (BCSs) A-F. We verified that the cytochrome P450 (CYP) genes adjacent to Fcs1 cannot oxidize βCs. Alternatively, the separated CYP684B2 family gene Fcs2 was identified to catalyze βC hydroxylation together with its cofactor gene Fcs3. The functional homologue of Fcs2 is only present in the Fcs1-containing fungi and highly similar to the Fcs1-connected yet nonfunctional CYP. Both evolved quicker than those from fungi without Fcs1 homologues. Finally, the paired methyl/glucosyl transferase genes were verified to mediate the production of BCSs from hydroxy-βCs. All these functionally verified genes are located on different chromosomes of Beauveria, which is in contrast to the typical content-clustered feature of fungal biosynthetic gene clusters (BGCs). We also found that the production of BCSs selectively contributed to fungal infection of different insect species. Our findings shed light on the biosynthetic mechanism of βC glycosides, including the identification of a βC hydroxylase. The results of this study also propose an evolving process of fungal BGC formation following the horizontal transfer of a bacterial gene to fungi.
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Affiliation(s)
- Xin-Lin Li
- Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai200032, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing100049, China
| | - Yanlei Sun
- Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai200032, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing100049, China
| | - Ying Yin
- Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai200032, China
| | - Shuai Zhan
- Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai200032, China
| | - Chengshu Wang
- Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai200032, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing100049, China
- School of Life Science and Technology,Shanghai Tech University, Shanghai201210, China
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10
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Dan W, Cao Y, Sun Y, Zhang J, Liu J, Gao J, Han R, Dai J. Novel N 1 or N 9 modified α-carboline analogues as potential ligands in Alzheimer's disease therapy: Synthesis and neurobiological activity evaluation. Bioorg Chem 2023; 133:106378. [PMID: 36736035 DOI: 10.1016/j.bioorg.2023.106378] [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: 12/14/2022] [Revised: 01/05/2023] [Accepted: 01/14/2023] [Indexed: 01/20/2023]
Abstract
A series of new α-carboline analogues modified at N1 or N9 positions by alkyl, benzyl and phenyl were synthesized and characterized as potential ligands for AD therapy. These compounds exhibited multifunctional neurobiological activities including anti-neuroinflammatory, neuroprotective and cholinesterase inhibition. Among them, compound 5d with good drug-like properties and no cytotoxicity, showed potent inhibitory activity against NO production (IC50 = 1.45 μM), which could suppress the expression levels of iNOS and COX-2 in a dose-dependent manner. Further mechanism exploration indicated that compound 5d could regulate the NF-κB signaling pathway by decreasing the phosphorylation of IκB-α and p65. Notably, compound 5d could effectively decrease the LPS-induced aberrations in zebrafish. Compounds 3b, 4f, 5c, 5g, 5m and 6i exhibited potential neuroprotective activity (cell viability > 70 %) in the H2O2-induced PC-12 neuronal death model and rescued the SOD activity. In particular, compounds 3b, 4f, and 5g activated the Nrf2 signaling pathway, and improved the expressions of antioxidant proteins NQO-1 and HO-1, which alleviated the head cell apoptosis in zebrafish. Additionally, compound 6i exhibited potential inhibitory activity against BuChE with IC50 of 0.77 μM. Overall, this work provided some lead compounds based on α-carboline used for AD therapy.
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Affiliation(s)
- Wenjia Dan
- School of Life Science and Technology, Weifang Medical University, Shandong, China
| | - Yidan Cao
- School of Life Science and Technology, Weifang Medical University, Shandong, China
| | - Yifan Sun
- School of Life Science and Technology, Weifang Medical University, Shandong, China
| | - Jiaoyue Zhang
- School of Life Science and Technology, Weifang Medical University, Shandong, China
| | - Jinyi Liu
- School of Life Science and Technology, Weifang Medical University, Shandong, China
| | - Jixiang Gao
- School of Life Science and Technology, Weifang Medical University, Shandong, China
| | - Rui Han
- Institute of Basic and Transitional Medicine, Xi'an Medical University, Shannxi, China.
| | - Jiangkun Dai
- School of Life Science and Technology, Weifang Medical University, Shandong, China.
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11
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Lin J, Xiao D, Lu L, Liang B, Xiong Z, Xu X. New β-carboline derivatives as potential α-glucosidase inhibitor: Synthesis and biological activity evaluation. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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12
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Verboni M, Sisti M, Campana R, Benedetti S, Palma F, Potenza L, Lucarini S, Duranti A. Synthesis and Biological Evaluation of 6- O-Sucrose Monoester Glycolipids as Possible New Antifungal Agents. Pharmaceuticals (Basel) 2023; 16:136. [PMID: 37259288 PMCID: PMC9966131 DOI: 10.3390/ph16020136] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/12/2023] [Accepted: 01/13/2023] [Indexed: 10/28/2023] Open
Abstract
A small library of 6-O-sucrose monoester surfactants has been synthesized and tested against various microorganisms. The synthetic procedure involved a modified Mitsunobu reaction, which showed improved results compared to those present in the literature (higher yields and larger scope). The antifungal activities of most of these glycolipids were satisfactory. In particular, sucrose palmitoleate (URB1537) showed good activity against Candida albicans ATCC 10231, Fusarium spp., and Aspergillus fumigatus IDRAH01 (MIC value: 16, 32, 64 µg/mL, respectively), and was further characterized through radical scavenging, anti-inflammatory, and biocompatibility tests. URB1537 has been shown to control the inflammatory response and to have a safe profile.
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Affiliation(s)
| | | | | | | | | | | | - Simone Lucarini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, 61029 Urbino, PU, Italy
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13
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Discovery of Novel Pimprinine and Streptochlorin Derivatives as Potential Antifungal Agents. Mar Drugs 2022; 20:md20120740. [PMID: 36547887 PMCID: PMC9787289 DOI: 10.3390/md20120740] [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: 11/09/2022] [Revised: 11/22/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022] Open
Abstract
Pimprinine and streptochlorin are indole alkaloids derived from marine or soil microorganisms. In our previous study, they were promising lead compounds due to their potent bioactivity in preventing many phytopathogens, but further structural modifications are required to improve their antifungal activity. In this study, pimprinine and streptochlorin were used as parent structures with the combination strategy of their structural features. Three series of target compounds were designed and synthesized. Subsequent evaluation for antifungal activity against six common phytopathogenic fungi showed that some of thee compounds possessed excellent effects, and this is highlighted by compounds 4a and 5a, displaying 99.9% growth inhibition against Gibberella zeae and Alternaria Leaf Spot under 50 μg/mL, respectively. EC50 values indicated that compounds 4a, 5a, 8c, and 8d were even more active than Azoxystrobin and Boscalid. SAR analysis revealed the relationship between 5-(3'-indolyl)oxazole scaffold and antifungal activity, which provides useful insight into the development of new target molecules. Molecular docking models indicate that compound 4a binds with leucyl-tRNA synthetase in a similar mode as AN2690, offering a perspective on the mode of action for the study of its antifungal activity. These results suggest that compounds 4a and 5a could be regarded as novel and promising antifungal agents against phytopathogens due to their valuable potency.
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Tzouras NV, Scattolin T, Gobbo A, Bhandary S, Rizzolio F, Cavarzerani E, Canzonieri V, Van Hecke K, Vougioukalakis GC, Cazin CSJ, Nolan SP. A Green Synthesis of Carbene-Metal-Amides (CMAs) and Carboline-Derived CMAs with Potent in vitro and ex vivo Anticancer Activity. ChemMedChem 2022; 17:e202200135. [PMID: 35312174 DOI: 10.1002/cmdc.202200135] [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: 02/14/2022] [Indexed: 11/06/2022]
Abstract
The modularity and ease of synthesis of carbene-metal-amide (CMA) complexes based on the coinage metals (Au, Ag, Cu) and N-heterocyclic carbenes (NHCs) as ancillary ligands pave the way for the expansion of their applications beyond photochemistry and catalysis. Herein, we further improve the synthesis of such compounds by circumventing the use of toxic organic solvents which were previously required for their purification, and we expand their scope to include complexes incorporating carbolines as the amido fragments. The novel complexes are screened both in vitro and ex vivo, against several cancer cell lines and high-grade serous ovarian cancer (HGSOC) tumoroids, respectively. Excellent cytotoxicity values are obtained for most complexes, while the structural variety of the CMA library screened thus far, provides promising leads for future developments. Variations of all three components (NHC, metal, amido ligand), enable the establishment of trends regarding cytotoxicity and selectivity towards cancerous over normal cells.
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Affiliation(s)
- Nikolaos V Tzouras
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281,S-3, 9000, Ghent, Belgium.,Department of Chemistry, Laboratory of Organic Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771, Athens, Greece
| | - Thomas Scattolin
- Department of Molecular Sciences and Nanosystems, Università Ca' Foscari, Campus Scientifico Via Torino 155, 30174, Venezia-Mestre, Italy.,Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, via Franco Gallini 2, 33081, Aviano, Italy
| | - Alberto Gobbo
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281,S-3, 9000, Ghent, Belgium
| | - Subhrajyoti Bhandary
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281,S-3, 9000, Ghent, Belgium
| | - Flavio Rizzolio
- Department of Molecular Sciences and Nanosystems, Università Ca' Foscari, Campus Scientifico Via Torino 155, 30174, Venezia-Mestre, Italy.,Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, via Franco Gallini 2, 33081, Aviano, Italy
| | - Enrico Cavarzerani
- Department of Molecular Sciences and Nanosystems, Università Ca' Foscari, Campus Scientifico Via Torino 155, 30174, Venezia-Mestre, Italy
| | - Vincenzo Canzonieri
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, via Franco Gallini 2, 33081, Aviano, Italy.,Department of Medical, Surgical and Health Sciences, Università degli Studi di Trieste, Strada di Fiume 447, 34149, Trieste, Italy
| | - Kristof Van Hecke
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281,S-3, 9000, Ghent, Belgium
| | - Georgios C Vougioukalakis
- Department of Chemistry, Laboratory of Organic Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771, Athens, Greece
| | - Catherine S J Cazin
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281,S-3, 9000, Ghent, Belgium
| | - Steven P Nolan
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281,S-3, 9000, Ghent, Belgium
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