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Chen J, Xu H, Mao Z, Nie K, Ning Y, Li Z, Tian B, Sun Z, Zhu P, Sun R. Epoxy Resins with Controllable "Thermally Conductive-Self-Healing" Synergies: a New Material to Meet the Needs of Flexible Electronic Devices. Chemistry 2024:e202400537. [PMID: 38703390 DOI: 10.1002/chem.202400537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/29/2024] [Accepted: 05/02/2024] [Indexed: 05/06/2024]
Abstract
With the popularization of 5G technology and artificial intelligence, thermally conductive epoxies with self-healing ability will be widely used in flexible electronic materials. Although many compounds containing both performances have been synthesized, there is little systematic theory to explain this coordination mechanism. In this paper, alkyl chains of different lengths were introduced to epoxies for discussing the thermally conductive, the self-healing performance, and the synergistic effect. A series of electronic-grade biphenyl epoxies (4,4'-bis(oxiran-2-ylmethoxy)-1,1'-biphenyl (1), 4,4'-bis(2-(oxiran-2-yl)ethoxy)-1,1'-biphenyl (2), 4,4'-bis(3-(oxiran-2-yl)propoxy)-1,1'-biphenyl (3), and 4,4'-bis(4-(oxiran-2-yl)butoxy)-1,1'-biphenyl (4) were synthesized and characterized. Furthermore, they were cured with decanedioic acid to produce polymers. Results showed that alkyl chains can both affect the two properties, and the epoxies suitable for specific application scenarios can be prepared by adjusting the length of alkyl chains. In terms of thermal conductivity, compound 1 was a most promising material. However, compound 4 was expected to be utilized in flexible electronic devices because of its acceptable thermal conductivity, self-healing ability, transparency, and flexibility.
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Affiliation(s)
- Jifeng Chen
- Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Advanced Electronic Materials, CHINA
| | - Hui Xu
- Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Advanced Electronic Materials, CHINA
| | - Zhu Mao
- Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Advanced Electronic Materials, CHINA
| | - Kaixuan Nie
- Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Advanced Electronic Materials, CHINA
| | - Yi Ning
- Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Advanced Electronic Materials, CHINA
| | - Zhongyu Li
- Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Advanced Electronic Materials, CHINA
| | - Bo Tian
- Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Advanced Electronic Materials, CHINA
| | - Zhibo Sun
- Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Advanced Electronic Materials, CHINA
| | - Pengli Zhu
- Shenzhen Institute of Advanced Integration Technology, Chinese Academy of Sciences,, advanced materials center, 1068 Xueyuan Avenue, Shenzhen University, 518055, Shenzhen, CHINA
| | - Rong Sun
- Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Advanced Electronic Materials, CHINA
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2
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Sun NB, Min LJ, Sun XP, Zhai ZW, Bajsa-Hirschel J, Wei ZC, Hua XW, Cantrell CL, Xu H, Duke SO, Liu XH. Novel Pyrazole Acyl(thio)urea Derivatives Containing a Biphenyl Scaffold as Potential Succinate Dehydrogenase Inhibitors: Design, Synthesis, Fungicidal Activity, and SAR. J Agric Food Chem 2024; 72:2512-2525. [PMID: 38286814 DOI: 10.1021/acs.jafc.3c07735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
As part of a program to discover novel succinate dehydrogenase inhibitor fungicides, a series of new pyrazole acyl(thio)urea compounds containing a diphenyl motif were designed and synthesized. Their structures were confirmed by 1H NMR, HRMS, and single X-ray crystal diffraction analysis. Most of these compounds possessed excellent activity against 10 fungal plant pathogens at 50 μg mL-1, especially against Rhizoctonia solani, Alternaria solani, Sclerotinia sclerotiorum, Botrytis cinerea, and Cercospora arachidicola. Interestingly, compounds 3-(difluoromethyl)-1-methyl-N-((3',4',5'-trifluoro-[1,1'-biphenyl]-2-yl)carbamoyl)-1H-pyrazole-4-carboxamide (9b, EC50 = 0.97 ± 0.18 μg mL-1), 1,3-dimethyl-N-((3',4',5'-trifluoro-[1,1'-biphenyl]-2-yl)carbamoyl)-1H-pyrazole-4-carboxamide (9a, EC50 = 2.63 ± 0.41 μg mL-1), and N-((4'-chloro-[1,1'-biphenyl]-2-yl)carbamoyl)-1,3-dimethyl-1H-pyrazole-4-carboxamide (9g, EC50 = 1.31 ± 0.15 μg mL-1) exhibited activities against S. sclerotiorum that were better than the commercial fungicide bixafen (EC50 = 9.15 ± 0.05 μg mL-1) and similar to the positive control fluxapyroxad (EC50 = 0.71 ± 0.11 μg mL-1). These compounds were not significantly phytotoxic to monocotyledonous and dicotyledonous plants. Structure-activity relationships (SAR) are discussed by substituent effects/molecular docking, and density functional theory analysis indicated that these compounds are succinate dehydrogenase inhibitors.
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Affiliation(s)
- Na-Bo Sun
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015 Zhejiang China
| | - Li-Jing Min
- College of Life Science, Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, Huzhou University, Huzhou, Zhejiang 313000, China
| | - Xin-Peng Sun
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015 Zhejiang China
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Zhi-Wen Zhai
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Joanna Bajsa-Hirschel
- Natural Products Utilization Research Unit, United States Department of Agriculture, Agricultural Research Service, University, Mississippi 38677, United States
| | - Zhe-Cheng Wei
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xue-Wen Hua
- College of Agriculture, Liaocheng University, Liaocheng, Shandong 252000, China
| | - Charles L Cantrell
- Natural Products Utilization Research Unit, United States Department of Agriculture, Agricultural Research Service, University, Mississippi 38677, United States
| | - Hao Xu
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015 Zhejiang China
| | - Stephen O Duke
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
| | - Xing-Hai Liu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
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Niu SL, Hao JH, Xu JY, Guan Q, Zhou ZC, Lv TM, Sun YT. Acule biphenyl A-B, new biphenyl derivatives from Ruscus aculeatus. J Asian Nat Prod Res 2023; 25:1076-1084. [PMID: 37724355 DOI: 10.1080/10286020.2023.2254702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 08/29/2023] [Indexed: 09/20/2023]
Abstract
The investigation of chemical constituents from the rhizomes of Ruscus aculeatus resulted in the isolation of two new biphenyl derivatives, aculebiphenyls A and B (1-2), together with two known analogs (3-4). Their chemical structures were elucidated based on extensive spectroscopic interpretation and HR-ESI-MS analysis. Compounds 3-4 were isolated from the Ruscus genus for the first time. The isolated compounds were tested for anti-inflammatory activities and antibacterial activities. Compound 1 exhibited significant inhibitory effects on LPS-induced NO production and COX-2 with IC50 values of 10.8 µM and 0.4 µM. Compound 1 also significantly down-regulated the levels of inflammatory cytokines IL-1β, IL-6, and TNF-α. Compound 1 showed moderate antibacterial activities.
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Affiliation(s)
- Sheng-Li Niu
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Jia-Hui Hao
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Jing-Yi Xu
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Qi Guan
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Zhen-Chi Zhou
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Tian-Meng Lv
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, Key Laboratory of Ruminant Infectious Disease Prevention and Control (East), Ministry of Agriculture and Rural Affairs, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Ya-Ting Sun
- School of Pharmacy, Shenyang Medical College, Shenyang 110034, China
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Nathi R, Kowtharapu LP, Muchakayala SK, Konduru N. QbD-based stability-indicating liquid chromatography (RP-HPLC) method for the determination of flurbiprofen in cataplasm. Biomed Chromatogr 2023; 37:e5580. [PMID: 36609857 DOI: 10.1002/bmc.5580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/20/2022] [Accepted: 01/04/2023] [Indexed: 01/09/2023]
Abstract
A nonsteroidal drug called flurbiprofen (FBN) has analgesic, anti-inflammatory and antipyretic activity. Currently the determination of FBN in cataplasm does not have any pharmacopeial method. However, the drug substance, tablet and ophthalmic solution formulations do have pharmacopeial methods. The development and validation of an accurate, precise and stability-indicating analytical method for the determination of FBN in cataplasm formulations is reported. The gradient method was employed for the quantification of FBN in the presence of internal standards such as biphenyl. A nonpolar separation phase (C18 , 250 × 4.6 mm, 5 μm Inertsil column; GL Sciences) was used. The optimal flow rate, column oven temperature, injection volume and detector wavelengths were 1.0 ml/min, 40°C, 20 μl and 245 nm, respectively. Mobile phase A was a mixture of water and glacial acetic acid (30:1 v/v) pH adjusted to 2.20 with glacial acetic acid or 1 m NaOH; mobile phase B was methanol (100%). The gradient elution program was [time (min)/% B]: 5/60, 20/70, 25/70, 30/60 and 40/60. The obtained RSDs for the precision and intermediate precision were 0.7 and 0.5%. The percentage recovery ranged from 99.2 to 100.4%. The linear regression coefficient >0.9996 indicates that all peak responses were linear with the concentration. The sample and standard solutions were stable for up to 24 h on the benchtop and in the refrigerator. The critical peaks were well separated from the generated peaks owing to forced degradation, including diluent and placebo peaks. The method validation data and quality by design-based robustness study results indicate that the developed method is robust and fit for routine use in the quality control laboratory. The proposed method is specific, accurate and precise, and the quality by design utilized the first method for the determination of FBN in cataplasm formulations. Transdermal patches and gels have low extraction capacity and this method is applicable for quantification.
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Affiliation(s)
- Rathnakar Nathi
- Department of Pharmaceutical Sciences, Andhra University, Visakhapatnam, Andhra Pradesh, India
| | - Leela Prasad Kowtharapu
- Analytical Research and Development, STA Pharmaceutical Co. Ltd (Wuxi app Tec Company), Wuxi, China
| | | | - Naresh Konduru
- Analytical Research and Development, Zhuhai Resproly Pharmaceutical Technology Co. Ltd, Zhuhai city, Guangdong Province, China
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Heitsch S, Mayer LC, Pignot YL, Trapp O. Synthesis and stereodynamics of intramolecular hemiacetals in biaryl aldehyde-alcohols. Chirality 2023. [PMID: 36951009 DOI: 10.1002/chir.23560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/23/2023] [Accepted: 02/25/2023] [Indexed: 03/24/2023]
Abstract
Soai's asymmetric autocatalysis represents a highly remarkable example for spontaneous symmetry breaking and enantioselective amplification in the enantioselective alkylation of pyrimidine-5-carbaldehydes to the corresponding chiral pyrimidine alcohols. Recently, zinc hemiacetalate complexes, formed from pyrimidine-5-carbaldehydes and the chiral product alcohol, were identified by in situ high-resolution mass spectrometric measurements as highly active transient asymmetric catalysts in this autocatalytic transformation. To study the formation of such hemiacetals and their stereodynamic properties, we focused on the synthesis of coumarin homolog biaryl systems with carbaldehyde and alcohol substituents. Such systems are able to form hemiacetals by intramolecular cyclization. An interesting feature of the substituted biaryl backbone is that tropos and atropos systems can be obtained, enabling or disabling the intramolecular cyclization to hemiacetals. Biaryl structures with various functional groups were synthesized, and the equilibrium and stereodynamics between the closed and open structures were investigated by dynamic enantioselective HPLC (DHPLC). The enantiomerization barriers ΔGǂ and activation parameters ΔHǂ and ΔSǂ were determined from temperature dependent kinetic measurements.
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Affiliation(s)
- Simone Heitsch
- Department of Chemistry, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Lena Carina Mayer
- Department of Chemistry, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Yanis Luca Pignot
- Department of Chemistry, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Oliver Trapp
- Department of Chemistry, Ludwig-Maximilians-University Munich, Munich, Germany
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Rifaldi, Sukandar ER, Fadlan A, Fatmawati S, Purnomo AS, Wairata J, Ersam T. A new biphenyl from the stem bark of Garcinia macrantha A.C.Sm. Nat Prod Res 2023:1-6. [PMID: 36938907 DOI: 10.1080/14786419.2023.2190113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
In our continuation of exploring antidiabetic agents from Garcinia species, we found that the methanolic extract of G. macrantha A.C.Sm. exhibited considerable α-glucosidase inhibition of 58.20 ± 0.37% in sucrose substrate and 39.86 ± 2.07% in maltose substrate at 100 μg/mL. Phytochemical investigation on the extract revealed the presence of a new biphenyl, macrabiphenyl A, which was successfully elucidated by means of spectroscopic methods (HRESIMS and 1D and 2D NMR). The α-glucosidase inhibitory evaluation indicated that the new compound was weakly active against the enzyme.
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Affiliation(s)
- Rifaldi
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
| | - Edwin R Sukandar
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
| | - Arif Fadlan
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
| | - Sri Fatmawati
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
| | - Adi S Purnomo
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
| | - Johanis Wairata
- Department of Agrotechnology, Faculty of Natural Science and Engineering Technology, University of Halmahera, Tobelo, North Halmahera, Indonesia
| | - Taslim Ersam
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
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Wang Y, Huang Q, Zhang L, Zheng C, Xu H. Biphenyls in Clusiaceae: Isolation, structure diversity, synthesis and bioactivity. Front Chem 2022; 10:987009. [PMID: 36531325 PMCID: PMC9751493 DOI: 10.3389/fchem.2022.987009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 11/14/2022] [Indexed: 12/05/2022] Open
Abstract
Clusiaceae plants contain a wide range of biologically active metabolites that have gotten a lot of interest in recent decades. The chemical compositions of these plants have been demonstrated to have positive effects on a variety of ailments. The species has been studied for over 70 years, and many bioactive compounds with antioxidant, anti-proliferative, and anti-inflammatory properties have been identified, including xanthones, polycyclic polyprenylated acylphloroglucinols (PPAPs), benzophenones, and biphenyls. Prenylated side chains have been discovered in many of these bioactive substances. To date, there have been numerous studies on PPAPs and xanthones, while no comprehensive review article on biphenyls from Clusiaceae has been published. The unique chemical architectures and growing biological importance of biphenyl compounds have triggered a flurry of research and interest in their isolation, biological evaluation, and mechanistic studies. In particular, the FDA-approved drugs such as sonidegib, tazemetostat, daclatasvir, sacubitril and trifarotene are closely related to their biphenyl-containing moiety. In this review, we summarize the progress and development in the chemistry and biological activity of biphenyls in Clusiaceae, providing an in-depth discussion of their structural diversity and medicinal potential. We also present a preliminary discussion of the biological effects with or without prenyl groups on the biphenyls.
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Affiliation(s)
- Youyi Wang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qing Huang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Li Zhang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Changwu Zheng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China,*Correspondence: Changwu Zheng, ; Hongxi Xu,
| | - Hongxi Xu
- Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,*Correspondence: Changwu Zheng, ; Hongxi Xu,
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Fidan GS, Parlar S, Tarikogullari AH, Alptuzun V, Alpan AS. Design, synthesis, acetylcholinesterase, butyrylcholinesterase, and amyloid-β aggregation inhibition studies of substituted 4,4'-diimine/4,4'-diazo biphenyl derivatives. Arch Pharm (Weinheim) 2022; 355:e2200152. [PMID: 35976708 DOI: 10.1002/ardp.202200152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 07/01/2022] [Accepted: 07/23/2022] [Indexed: 11/11/2022]
Abstract
A series of 4,4'-diimine/4,4'-diazobiphenyl derivatives were designed, synthesized, and evaluated for their ability to inhibit both the acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) enzymes, as well as Aβ1-42 aggregation, in vitro. The AChE and BChE inhibition assays demonstrated that all compounds displayed moderate AChE inhibitory activity in the range of IC50 = 5.77-16.22 μM, while they displayed weak or no BChE inhibition. Among the title compounds, compound 2l, 4,4'-bis(quinolin-8-yldiazenyl)-1,1'-biphenyl, having a diazo-quinoline moiety demonstrated the most potent inhibition against AChE with an IC50 value of 5.77 μM. Furthermore, diazo derivatives 2d, 4,4'-bis[(4-methoxyphenyl)diazenyl]-1,1'-biphenyl, and 2i, 4,4'-bis(pyridin-3-yldiazenyl)-1,1'-biphenyl, provided better potency on Aβ1-42 aggregation, with an inhibition value of 74.08% and 78.39% at 100 μM and 55.35% and 61.36% at 25 μM, respectively. Molecular modeling studies were carried out for the most active compound against AChE, compound 2l. All the results suggested that compounds 2d and 2i have better inhibitory potencies on Aβ1-42 aggregation and moderate AChE enzyme activity, and therefore can be highlighted as promising compounds.
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Affiliation(s)
- Görkem S Fidan
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Sulunay Parlar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Ayse H Tarikogullari
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Vildan Alptuzun
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Ayşe S Alpan
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ege University, Izmir, Turkey
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Leng LF, Lai Q, Lv D, Yin JL, Zeng GZ. Study on the chemical composition of Caesalpinia sinensis. Nat Prod Res 2021; 36:5559-5566. [PMID: 34963387 DOI: 10.1080/14786419.2021.2021518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Five compounds were isolated from the methanolic extract of Caesalpinia sinensis stems and leaves including a new cassane-type butenolide norditerpenoid compound (1) and a new type of biphenyl compound (2); the compounds were identified as Norcaesalpin-one (1), 4'-hexyl 3-methyl 6-methoxy-[1,1'-biphenyl]-3,4'-dicarboxylate (2), rhapontigenin (3), 3-deoxysappanchalcone (4), isoliquiritigenin (5). Compounds 1-5 were first isolated from C. sinensis. Their structures were elucidaded on the basis of MS, IR, NMR spectroscopic, X-ray diffraction data analyses. The NGF-induced PC12 differentiation assay was performed on compound 1, and the results showed that compound 1 had a promotive effect on PC12 cell differentiation, with a differentiation rate of 12.32%. In addition, compounds 1-5 were evaluated for their cytotoxic activities against four human cancer cell lines (including A-549, BGC-823, MDA-MB-231, HepG2), and the results showed that compounds 3-5 showed inhibitory activity against these cancer cell lines with IC50 values ranging from 22.96 to 74.92 μmol/L, compound 4 showing the best activity against human malignant melanoma cells A375 with an IC50 value of 22.96 μmol/L.
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Affiliation(s)
- Lu-Fen Leng
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
| | - Qi Lai
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
| | - Dian Lv
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
| | - Jun-Lin Yin
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
| | - Guang-Zhi Zeng
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University, Kunming, China
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10
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Khodjoyan S, Remadna E, Dossmann H, Lesage D, Gontard G, Forté J, Hoffmeister H, Basu U, Ott I, Spence P, Waller ZAE, Salmain M, Bertrand B. [(C C)Au(N N)] + Complexes as a New Family of Anticancer Candidates: Synthesis, Characterization and Exploration of the Antiproliferative Properties. Chemistry 2021; 27:15773-15785. [PMID: 34436799 DOI: 10.1002/chem.202102751] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Indexed: 12/31/2022]
Abstract
A library of eleven cationic gold(III) complexes of the general formula [(C C)Au(N N)]+ when C C is either biphenyl or 4,4'-ditertbutyldiphenyl and N N is a bipyridine, phenanthroline or dipyridylamine derivative have been synthesized and characterized. Contrasting effects on the viability of the triple negative breast cancer cells MDA-MB-231 was observed from a preliminary screening. The antiproliferative activity of the seven most active complexes were further assayed on a larger panel of human cancer cells as well as on non-cancerous cells for comparison. Two complexes stood out for being either highly active or highly selective. Eventually, reactivity studies with biologically meaningful amino acids, glutathione, higher order DNA structures and thioredoxin reductase (TrxR) revealed a markedly different behavior from that of the well-known coordinatively isomeric [(C N C)Au(NHC)]+ structure. This makes the [(C C)Au(N N)]+ complexes a new class of organogold compounds with an original mode of action.
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Affiliation(s)
- Silva Khodjoyan
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Edwyn Remadna
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Héloïse Dossmann
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Denis Lesage
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Geoffrey Gontard
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Jérémy Forté
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Henrik Hoffmeister
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106, Braunschweig, Germany
| | - Uttara Basu
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106, Braunschweig, Germany
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106, Braunschweig, Germany
| | - Philip Spence
- School of Pharmacy, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Zoë A E Waller
- School of Pharmacy, University of East Anglia, Norwich, NR4 7TJ, UK.,UCL School of Pharmacy, 29-39 Brunswick Square, London, WC1 N, UK
| | - Michèle Salmain
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Benoît Bertrand
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
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11
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Lee C, Choi H, Park E, Nguyen T, Maeng H, Mee Lee K, Jun H, Shin D. Synthesis and anti-diabetic activity of novel biphenylsulfonamides as glucagon receptor antagonists. Chem Biol Drug Des 2021; 98:733-750. [PMID: 34310065 PMCID: PMC9291748 DOI: 10.1111/cbdd.13928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/24/2021] [Accepted: 07/10/2021] [Indexed: 11/27/2022]
Abstract
Type 2 diabetes is characterized by chronic hyperglycemia. Insulin, a hormone secreted from pancreatic β-cells, decreases blood glucose levels, and glucagon, a hormone secreted from pancreatic α-cells, increases blood glucose levels by counterregulation of insulin through stimulation of hepatic glucose production. In diabetic patients, dysregulation of glucagon secretion contributes to hyperglycemia. Thus, inhibition of the glucagon receptor is one strategy for the treatment of hyperglycemia in type 2 diabetes. In this paper, we report a series of biphenylsulfonamide derivatives that were designed, synthesized, and then evaluated by cAMP and hepatic glucose production assays as glucagon receptor antagonists. Of these, compound 7aB-3 decreased glucagon-induced cAMP production and glucagon-induced glucose production in the in vitro assays. Glucagon challenge tests and glucose tolerance tests showed that compound 7aB-3 significantly inhibited glucagon-induced glucose increases and improved glucose tolerance. These results suggest that compound 7aB-3 has therapeutic potential for the treatment of type 2 diabetes.
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Affiliation(s)
- Chang‐Yong Lee
- College of PharmacyGachon Institute of Pharmaceutical ScienceGachon UniversityIncheonKorea
| | - Hojung Choi
- College of PharmacyGachon Institute of Pharmaceutical ScienceGachon UniversityIncheonKorea
- Lee Gil Ya Cancer and Diabetes InstituteGachon UniversityIncheonKorea
| | - Eun‐Young Park
- College of PharmacyMokpo National UniversityMuan‐gunJeollanam‐doKorea
| | - Thi‐Thao‐Linh Nguyen
- College of PharmacyGachon Institute of Pharmaceutical ScienceGachon UniversityIncheonKorea
| | - Han‐Joo Maeng
- College of PharmacyGachon Institute of Pharmaceutical ScienceGachon UniversityIncheonKorea
| | | | - Hee‐Sook Jun
- College of PharmacyGachon Institute of Pharmaceutical ScienceGachon UniversityIncheonKorea
- Lee Gil Ya Cancer and Diabetes InstituteGachon UniversityIncheonKorea
- Gachon Medical Research InstituteGil HospitalIncheonKorea
| | - Dongyun Shin
- College of PharmacyGachon Institute of Pharmaceutical ScienceGachon UniversityIncheonKorea
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12
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Chen HR. A cadmium(II) coordination polymer with a fivefold interpenetrating diamondoid three-dimensional framework: synthesis, crystal structure, luminescence and photocatalytic properties. Acta Crystallogr C Struct Chem 2021; 77:734-739. [PMID: 34738544 DOI: 10.1107/s2053229621010639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 10/14/2021] [Indexed: 11/11/2022] Open
Abstract
A novel three-dimensional (3D) CdII coordination polymer, namely, poly[[μ2-4,4'-bis(2-methylimidazol-1-yl)-[1,1'-biphenyl]](μ2-5-methylisophthalato)cadmium(II)], [Cd(C9H6O4)(C20H18N4)]n or [Cd(MIP)(4,4'-BMIBP)]n, (I), was synthesized by the hydrothermal method using 5-methylisophthalic acid (H2MIP), 4,4'-bis(2-methylimidazol-1-yl)-[1,1'-biphenyl] (4,4'-BMIBP) and Cd(NO3)2·6H2O, and characterized by single-crystal X-ray diffraction, elemental analysis, IR spectroscopy and thermogravimetric analysis. Compound (I) exhibits a novel fivefold interpenetrating 3D diamondoid framework. Additionally, it shows fluorescence emission in the solid state and promising photocatalytic activities for the degradation of methylene blue (MB) in water at room temperature.
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Affiliation(s)
- Hui Ru Chen
- Department of Pharmaceutical Technology and Biological Engineering, Changzhou Institute of Engineering Technology, Changzhou 213164, People's Republic of China
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13
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Sun X, Li S, Cao J, Wang Y, Yang W, Zhang L, Liu Y, Qiu J, Tao S. A Hierarchical-Structured Impeller with Engineered Pd Nanoparticles Catalyzing Suzuki Coupling Reactions for High-Purity Biphenyl. ACS Appl Mater Interfaces 2021; 13:17429-17438. [PMID: 33827215 DOI: 10.1021/acsami.0c22284] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Suzuki cross-coupling reactions catalyzed by palladium are authoritative protocols in fine-chemical synthesis. Mass transfer and catalyst activity are both significant factors affecting the reaction efficiency in heterogeneous reactions. Although the holistic catalysts hold great promise in heterogeneous reactions due to the enhanced mass transport and convenient recycling, the unsatisfied catalytic activity has impeded further large-scale applications. In addition, another pronounced barrier is the product separation in the intricate system. Here, the catalytic production and separation of biphenyl (purity of 99.7%) were achieved by integrating the Suzuki cross-coupling reactions and the crystallization separation for the first time. A hierarchical-structured impeller with Pd nanoparticles (NPs) loaded on the Ni(OH)2 nanosheets was prepared to catalyze the Suzuki reactions for bromobenzene, which exhibits a high turnover frequency (TOF) value of 25,976 h-1 and a yield of 99.5%. The X-ray absorption fine structure (XAFS) analysis has unveiled that the electron transfer between the Pd NPs and Ni(OH)2 accounts for the greatly enhanced catalytic activity. The findings inspire new insights toward rational engineering of highly efficient holistic catalysts for Suzuki reaction, and the innovative integrated technology offers an avenue for the separation and collection of products.
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Affiliation(s)
- Xueyan Sun
- Department of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Shaofeng Li
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Jinzhe Cao
- Department of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Yuchao Wang
- Department of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Wenbo Yang
- Department of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Lijing Zhang
- Department of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Yijin Liu
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Jieshan Qiu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Shengyang Tao
- Department of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
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14
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Kimura T, Miyagawa S, Takaya H, Naito M, Tokunaga Y. Locking the Dynamic Axial Chirality of Biphenyl Crown Ethers through Threading. Chem Asian J 2020; 15:3897-3903. [PMID: 33026146 DOI: 10.1002/asia.202001046] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/26/2020] [Indexed: 12/17/2022]
Abstract
This paper describes the syntheses of [2]rotaxanes comprising 23- and 26-membered biphenyl crown ethers as the macrocyclic components and secondary ammonium ions as the dumbbell-shaped components, and the locking of the dynamic axial chirality of the biphenyl moieties in these structures. Chiral high-performance liquid chromatography (HPLC) revealed that our [2]rotaxane featuring the 26-membered crown ether racemized at room temperature, but the racemization of the [2]rotaxane featuring the 23-membered crown ether did not proceed at room temperature over a period of three days. After separation of the enantiomers of the [2]rotaxane incorporating the 23-membered crown ether through chiral HPLC, we studied its racemization at elevated temperature. The rate of stereoinversion in dimethylsulfoxide (a polar solvent) was faster than that in o-dichlorobenzene (a nonpolar solvent), and herein we discuss these kinetic parameters.
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Affiliation(s)
- Tomoya Kimura
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, Bunkyo, Fukui, 910-8507, Japan
| | - Shinobu Miyagawa
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, Bunkyo, Fukui, 910-8507, Japan
| | - Hikaru Takaya
- International Research Center for Elements Science, Institute for Chemical Research, Kyoto University, Uji, 611-0011, Japan.,Institute for Molecular Science, National Institute of Natural Science, Okazaki, 444-8585, Japan
| | - Masaya Naito
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, Bunkyo, Fukui, 910-8507, Japan
| | - Yuji Tokunaga
- Department of Materials Science and Engineering, Faculty of Engineering, University of Fukui, Bunkyo, Fukui, 910-8507, Japan
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15
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Zeindlhofer V, Hudson P, Pálvölgyi ÁM, Welsch M, Almarashi M, Woodcock HL, Brooks B, Bica-Schröder K, Schröder C. Enantiomerization of Axially Chiral Biphenyls: Polarizable MD Simulations in Water and Butylmethylether. Int J Mol Sci 2020; 21:E6222. [PMID: 32872113 PMCID: PMC7503397 DOI: 10.3390/ijms21176222] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/20/2020] [Accepted: 08/25/2020] [Indexed: 01/14/2023] Open
Abstract
In this study, we investigate the influence of chiral and achiral cations on the enantiomerization of biphenylic anions in n-butylmethylether and water. In addition to the impact of the cations and solvent molecules on the free energy profile of rotation, we also explore if chirality transfer between a chiral cation and the biphenylic anion is possible, i.e., if pairing with a chiral cation can energetically favour one conformer of the anion via diastereomeric complex formation. The quantum-mechanical calculations are accompanied by polarizable MD simulations using umbrella sampling to study the impact of solvents of different polarity in more detail. We also discuss how accurate polarizable force fields for biphenylic anions can be constructed from quantum-mechanical reference data.
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Affiliation(s)
- Veronika Zeindlhofer
- Department of Computational Biological Chemistry, University of Vienna, Währingerstraße 17, 1090 Vienna, Austria; (V.Z.); (M.W.); (M.A.)
| | - Phillip Hudson
- Laboratory of Computational Biology, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD 20892, USA; (P.H.); (B.B.)
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA;
| | - Ádám Márk Pálvölgyi
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria; (Á.M.P.); (K.B.-S.)
| | - Matthias Welsch
- Department of Computational Biological Chemistry, University of Vienna, Währingerstraße 17, 1090 Vienna, Austria; (V.Z.); (M.W.); (M.A.)
| | - Mazin Almarashi
- Department of Computational Biological Chemistry, University of Vienna, Währingerstraße 17, 1090 Vienna, Austria; (V.Z.); (M.W.); (M.A.)
| | - H. Lee Woodcock
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA;
| | - Bernard Brooks
- Laboratory of Computational Biology, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD 20892, USA; (P.H.); (B.B.)
| | - Katharina Bica-Schröder
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria; (Á.M.P.); (K.B.-S.)
| | - Christian Schröder
- Department of Computational Biological Chemistry, University of Vienna, Währingerstraße 17, 1090 Vienna, Austria; (V.Z.); (M.W.); (M.A.)
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16
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Fan Z, Bay KL, Chen X, Zhuang Z, Park HS, Yeung KS, Houk KN, Yu JQ. Rational Development of Remote C-H Functionalization of Biphenyl: Experimental and Computational Studies. Angew Chem Int Ed Engl 2020; 59:4770-4777. [PMID: 31943648 PMCID: PMC7064431 DOI: 10.1002/anie.201915624] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Indexed: 11/12/2022]
Abstract
A simple and efficient nitrile-directed meta-C-H olefination, acetoxylation, and iodination of biaryl compounds is reported. Compared to the previous approach of installing a complex U-shaped template to achieve a molecular U-turn and assemble the large-sized cyclophane transition state for the remote C-H activation, a synthetically useful phenyl nitrile functional group could also direct remote meta-C-H activation. This reaction provides a useful method for the modification of biaryl compounds because the nitrile group can be readily converted to amines, acids, amides, or other heterocycles. Notably, the remote meta-selectivity of biphenylnitriles could not be expected from previous results with a macrocyclophane nitrile template. DFT computational studies show that a ligand-containing Pd-Ag heterodimeric transition state (TS) favors the desired remote meta-selectivity. Control experiments demonstrate the directing effect of the nitrile group and exclude the possibility of non-directed meta-C-H activation. Substituted 2-pyridone ligands were found to be key in assisting the cleavage of the meta-C-H bond in the concerted metalation-deprotonation (CMD) process.
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Affiliation(s)
- Zhoulong Fan
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Katherine L Bay
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Zhe Zhuang
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Han Seul Park
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Kap-Sun Yeung
- Discovery Chemistry, Bristol-Myers Squibb Research and Development, 100 Binney Street, Cambridge, MA, 02142, USA
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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17
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Zhang X, Qu H, Ji W, Zheng D, Ding T, Abegglen C, Qiu D, Qu D. Fast and Controllable Prelithiation of Hard Carbon Anodes for Lithium-Ion Batteries. ACS Appl Mater Interfaces 2020; 12:11589-11599. [PMID: 32056422 DOI: 10.1021/acsami.9b21417] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hard carbon has been extensively investigated as anode materials for high-energy lithium-ion batteries owing to its high capacity, long cycle life, good rate capability, and low cost of production. However, it suffers from a large irreversible capacity and thus low initial coulombic efficiency (ICE), which hinders its commercial use. Here, we developed a fast and controllable prelithiation method based on a chemical reaction using a lithium-containing reagent (1 M lithium biphenylide dissolved in tetrahydrofuran). The prelithiation extent can be easily controlled by tuning the reaction time. An SEI layer is formed during chemical prelithiation, and the ICE of prelithiated hard carbon in half-cell format can be increased to ∼106% in 30 s. When matched with a LiNi1/3Co1/3Mn1/3O2 cathode, the full cell with the prelithiated hard carbon anode exhibits a much improved ICE (90.2 vs 75%) and cycling performance than those of the pristine full cell. This facile prelithiation method is proved to be a practical solution for the commercial application of hard carbon materials.
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Affiliation(s)
- Xiaoxiao Zhang
- Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, United States
| | - Huainan Qu
- Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, United States
| | - Weixiao Ji
- Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, United States
| | - Dong Zheng
- Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, United States
| | - Tianyao Ding
- Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, United States
| | - Caleb Abegglen
- Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, United States
| | - Dantong Qiu
- Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, United States
| | - Deyang Qu
- Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin Milwaukee, Milwaukee, Wisconsin 53211, United States
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18
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Lei Y, Han S, Yang Y, Pannecouque C, De Clercq E, Zhuang C, Chen FE. Design of Biphenyl-Substituted Diarylpyrimidines with a Cyanomethyl Linker as HIV-1 NNRTIs via a Molecular Hybridization Strategy. Molecules 2020; 25:E1050. [PMID: 32111013 PMCID: PMC7179183 DOI: 10.3390/molecules25051050] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 02/07/2023] Open
Abstract
The key problems of human immunodeficiency virus (HIV) therapy are the rapid emergence of drug-resistant mutant strains and significant cumulative drug toxicities. Therefore, there is an urgent demand for new anti-HIV agents with low toxicity and broad-spectrum antiviral potency. A series of biphenyl-substituted diarylpyrimidines with a cyanomethyl linker were designed using a molecular hybridization strategy. The cell-based anti-HIV assay showed that most of the compounds exhibited moderate to good activities against wild-type HIV-1 and clinically relevant mutant strains with a more favorable toxicity, and the enzymatic assay showed they had nanomolar activity against reverse transcriptase (RT). Compound 10p exhibited the best activity against wild-type HIV-1 with an EC50 (50% HIV-1 replication inhibitory concentration) value of 0.027 µM, an acceptable CC50 (50% cytotoxic concentration) value of 36.4 µM, and selectivity index of 1361, with moderate activities against the single mutants (EC50: E138K, 0.17 µM; Y181C, 0.87 µM; K103N, 0.9 µM; L100I, 1.21 µM, respectively), and an IC50 value of 0.059 µM against the RT enzyme, which was six-fold higher than nevirapine (NVP). The preliminary structure-activity relationship (SAR) of these new compounds was concluded. The molecular modeling predicted the binding modes of the new compounds with RT, providing molecular insight for further drug design.
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Affiliation(s)
- Yuan Lei
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China; (Y.L.); (Y.Y.)
| | - Sheng Han
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China;
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Yang Yang
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China; (Y.L.); (Y.Y.)
| | - Christophe Pannecouque
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000 Leuven, Belgium; (C.P.); (E.D.C.)
| | - Erik De Clercq
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000 Leuven, Belgium; (C.P.); (E.D.C.)
| | - Chunlin Zhuang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China;
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Fen-Er Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China; (Y.L.); (Y.Y.)
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China;
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
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19
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Auranwiwat C, Limtharakul T, Pyne SG, Rattanajak R, Kamchonwongpaisan S. A new xanthone and a biphenyl from the flower and twig extracts of Garcinia mckeaniana. Nat Prod Res 2019; 35:3404-3409. [PMID: 31842629 DOI: 10.1080/14786419.2019.1700505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The phytochemical investigation of the flower and twig extracts of Garcinia mckeaniana yielded a new xanthone, mckeanianone F (1) and a new biphenyl, mckeaniabiphenyl (2) together with 15 known compounds. The isolated compounds were characterized using spectroscopic techniques and mass spectrometry. Some of the isolated compounds from the twigs exhibited antimalarial and cytotoxic activities.
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Affiliation(s)
- Chiramet Auranwiwat
- Department of Chemistry, Faculty of Science and Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai, Thailand.,Expert Center of Innovative Health Food, Thailand Institute of Scientific and Technological Research (TISTR), Phathumthani, Thailand
| | - Thunwadee Limtharakul
- Department of Chemistry, Faculty of Science and Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai, Thailand
| | - Stephen G Pyne
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, Australia
| | - Roonglawan Rattanajak
- Medical Molecular Biotechnology Research Group, Natural Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency (NSTDA), Pathumthani, Thailand
| | - Sumalee Kamchonwongpaisan
- Medical Molecular Biotechnology Research Group, Natural Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency (NSTDA), Pathumthani, Thailand
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20
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Vashchenko A, Smirnov V, Semenova N, Schmidt E. Unusual structure of a biphenyl fragment: the important role of weak interactions. Acta Crystallogr C Struct Chem 2019; 75:1454-1458. [PMID: 31686653 DOI: 10.1107/s2053229619012567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 09/09/2019] [Indexed: 11/11/2022]
Abstract
1,5-Bis([1,1'-biphenyl]-4-yl)-5-hydroxy-3-methylheptane-1,6-dione, C32H30O3, was investigated by X-ray analysis, quantum chemical calculations and AIM (atoms in molecules) analysis. It was shown that four intramolecular C-H...π forces are established between the two biphenyl fragments. C-H...π interactions lead to a bending of the biphenyl part. The energy of the intramolecular interactions was estimated and the exclusive role of the moment of force was established.
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Affiliation(s)
| | - Vladimir Smirnov
- Institute of Chemistry, Favorsky 1, Irkutsk 664033, Russian Federation
| | - Nadezhda Semenova
- Institute of Chemistry, Favorsky 1, Irkutsk 664033, Russian Federation
| | - Elena Schmidt
- Institute of Chemistry, Favorsky 1, Irkutsk 664033, Russian Federation
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21
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Zheng D, Zhang H, Jiang JM, Chen YY, Wan SJ, Lin ZX, Xu HX. Prenylated xanthones and biphenyls from Garcinia esculenta with antistaphylococcal activity. Nat Prod Res 2019; 35:2137-2144. [PMID: 31512485 DOI: 10.1080/14786419.2019.1663511] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
One new xanthone, (±) garciesculenxanthone C (1), two new biphenyls, garciesculenbiphenyls A (2) and B (3), together with two known compounds, doitungbiphenyl B (4) and morusignin D (5), were isolated from Garcinia esculenta. The structures of new compounds were elucidated by spectroscopic analysis, and the absolute configuration of (±) garciesculenxanthone C (1) was assigned by a modified Mosher's method. All isolates were evaluated for their antistaphylococcal activities against Staphylococcus aureus Newman, USA300 LAC, USA400 MW2, and Mu50 strains. Among these, (±) garciesculenxanthone C (1) showed the best antistaphylococcal activity, and its effect was determined to be bactericidal by time-kill experiment.
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Affiliation(s)
- Dan Zheng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China.,Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai, People's Republic of China
| | - Hong Zhang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China.,Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai, People's Republic of China
| | - Jia-Ming Jiang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China.,Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai, People's Republic of China
| | - Yu-Yu Chen
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China.,Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai, People's Republic of China
| | - Shi-Jie Wan
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China.,Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai, People's Republic of China
| | - Zhi-Xiu Lin
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, People's Republic of China
| | - Hong-Xi Xu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China.,Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai, People's Republic of China
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22
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Wang SY, Li M, Miao LY, Wu S, Tong YF, Zhang WX, Zhang YY, Sun H. Protective effects of a novel water-soluble biphenyl compound WLP-S-14 against acute-on-chronic liver failure in rats. J Asian Nat Prod Res 2019; 21:928-938. [PMID: 31111726 DOI: 10.1080/10286020.2019.1585822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 02/19/2019] [Accepted: 02/19/2019] [Indexed: 06/09/2023]
Abstract
This study investigated the therapeutic effects of a water-soluble biphenyl compound, WLP-S-14, in acute-on-chronic liver failure (ACLF). Wistar rats were injected intraperitoneally with porcine serum twice a week for 8 weeks prior to administration of 600 mg/kg D-galactosamine and 50 μg/kg lipopolysaccharide to induce ACLF. Study groups were treated intravenously with saline or with 100 or 200 mg/kg WLP-S-14. WLP-S-14 ameliorated ACLF with significant reductions in the mortality rate and transaminase levels, indicating improved liver function. The mechanism underlying these effects may involve decreased levels of tumor necrosis factor-α and interleukin-6, with associated inhibition of apoptotic pathways.
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Affiliation(s)
- Shao-Yuan Wang
- a State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Material Medica, Chinese Academy of Medical Science & Peking Union Medical College , Beijing 100050 , China
| | - Mei Li
- a State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Material Medica, Chinese Academy of Medical Science & Peking Union Medical College , Beijing 100050 , China
| | - Lu-Yang Miao
- b School of Life Sciences and Biopharmaceuticals, Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Song Wu
- a State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Material Medica, Chinese Academy of Medical Science & Peking Union Medical College , Beijing 100050 , China
| | - Yuan-Feng Tong
- a State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Material Medica, Chinese Academy of Medical Science & Peking Union Medical College , Beijing 100050 , China
| | - Wen-Xuan Zhang
- a State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Material Medica, Chinese Academy of Medical Science & Peking Union Medical College , Beijing 100050 , China
| | - Yu-Yang Zhang
- b School of Life Sciences and Biopharmaceuticals, Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Hua Sun
- a State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Material Medica, Chinese Academy of Medical Science & Peking Union Medical College , Beijing 100050 , China
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Li J, Luo C, Zhang D, Cai X, Jiang L, Zhang G. Stable-Isotope Probing-Enabled Cultivation of the Indigenous Bacterium Ralstonia sp. Strain M1, Capable of Degrading Phenanthrene and Biphenyl in Industrial Wastewater. Appl Environ Microbiol 2019; 85:e00511-19. [PMID: 31053587 DOI: 10.1128/AEM.00511-19] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 04/26/2019] [Indexed: 02/06/2023] Open
Abstract
To identify and obtain the indigenous degraders metabolizing phenanthrene (PHE) and biphenyl (BP) from the complex microbial community within industrial wastewater, DNA-based stable-isotope probing (DNA-SIP) and cultivation-based methods were applied in the present study. DNA-SIP results showed that two bacterial taxa (Vogesella and Alicyclobacillus) were considered the key biodegraders responsible for PHE biodegradation only, whereas Bacillus and Cupriavidus were involved in BP degradation. Vogesella and Alicyclobacillus have not been linked with PHE degradation previously. Additionally, DNA-SIP helped reveal the taxonomic identity of Ralstonia-like degraders involved in both PHE and BP degradation. To target the separation of functional Ralstonia-like degraders from the wastewater, we modified the traditional cultivation medium and culture conditions. Finally, an indigenous PHE- and BP-degrading strain, Ralstonia pickettii M1, was isolated via a cultivation-dependent method, and its role in PHE and BP degradation was confirmed by enrichment of the 16S rRNA gene and distinctive dioxygenase genes in the DNA-SIP experiment. Our study has successfully established a program for the application of DNA-SIP in the isolation of the active functional degraders from an environment. It also deepens our insight into the diversity of indigenous PHE- and BP-degrading communities.IMPORTANCE The comprehensive treatment of wastewater in industrial parks suffers from the presence of multiple persistent organic pollutants (POPs), such as polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs), which reduce the activity of activated sludge and are difficult to eliminate. Characterizing and applying active bacterial degraders metabolizing multiple POPs therefore helps to reveal the mechanisms of synergistic metabolism and to improve wastewater treatment efficiency in industrial parks. To date, SIP studies have successfully investigated the biodegradation of PAHs or PCBs in real-world habitats. DNA-SIP facilitates the isolation of target microorganisms that pose environmental concerns. Here, an indigenous phenanthrene (PHE)- and biphenyl (BP)-degrading strain in wastewater, Ralstonia pickettii M1, was isolated via a cultivation-dependent method, and its role in PHE and BP degradation was confirmed by DNA-SIP. Our study provides a routine protocol for the application of DNA-SIP in the isolation of the active functional degraders from an environment.
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Hirose J, Fujihara H, Watanabe T, Kimura N, Suenaga H, Futagami T, Goto M, Suyama A, Furukawa K. Biphenyl/PCB Degrading bph Genes of Ten Bacterial Strains Isolated from Biphenyl-Contaminated Soil in Kitakyushu, Japan: Comparative and Dynamic Features as Integrative Conjugative Elements (ICEs). Genes (Basel) 2019; 10:genes10050404. [PMID: 31137913 PMCID: PMC6563109 DOI: 10.3390/genes10050404] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 05/18/2019] [Accepted: 05/20/2019] [Indexed: 11/21/2022] Open
Abstract
We sequenced the entire genomes of ten biphenyl/PCB degrading bacterial strains (KF strains) isolated from biphenyl-contaminated soil in Kitakyushu, Japan. All the strains were Gram-negative bacteria belonging to β- and γ-proteobacteria. Out of the ten strains, nine strains carried a biphenyl catabolic bph gene cluster as integrative conjugative elements (ICEs), and they were classified into four groups based on the structural features of the bph genes. Group I (five strains) possessed bph genes that were very similar to the ones in Pseudomonasfurukawaii KF707 (formerly Pseudomonas pseudoalcaligenes KF707), which is one of the best characterized biphenyl-utilizing strains. This group of strains carried salicylate catabolic sal genes that were approximately 6-kb downstream of the bph genes. Group II (two strains) possessed bph and sal genes similar to the ones in KF707, but these strains lacked the bphX region between bphC and bphD, which is involved in the downstream catabolism of biphenyl. These bph-sal clusters in groups I and II were located on an integrative conjugative element that was larger than 110 kb, and they were named ICEbph-sal. Our previous study demonstrated that the ICEbph-sal of Pseudomonas putida KF715 in group II existed both in an integrated form in the chromosome (referred to as ICEbph-salKF715 (integrated)) and in a extrachromosomal circular form (referred to as ICEbph-sal (circular)) (previously called pKF715A, 483 kb) in the stationary culture. The ICEbph-sal was transferred from KF715 into P. putida AC30 and P. putida KT2440 with high frequency, and it was maintained stably as an extrachromosomal circular form. The ICEbph-salKF715 (circular) in these transconjugants was further transferred to P. putida F39/D and then integrated into the chromosome in one or two copies. Meanwhile, group III (one strain) possessed bph genes, but not sal genes. The nucleotide sequences of the bph genes in this group were less conserved compared to the genes of the strains belonging to groups I and II. Currently, there is no evidence to indicate that the bph genes in group III are carried by a mobile element. Group IV (two strains) carried bph genes as ICEs (59–61 kb) that were similar to the genes found in Tn4371 from Cupriavidus oxalacticus A5 and ICEKKS1024677 from the Acidovorax sp. strain KKS102. Our study found that bph gene islands have integrative functions, are transferred among soil bacteria, and are diversified through modification.
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Affiliation(s)
- Jun Hirose
- Department of Applied Chemistry, Faculty of Engineering, University of Miyazaki, Miyazaki 889-2192, Japan.
| | - Hidehiko Fujihara
- Department of Food and Fermentation Sciences, Faculty of Food and Nutrition Sciences, Beppu University, Beppu 874-8501, Japan.
| | - Takahito Watanabe
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan.
| | - Nobutada Kimura
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8566, Japan.
| | - Hikaru Suenaga
- Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology (AIST), Tokyo 135-0064, Japan.
| | - Taiki Futagami
- Education and Research Center for Fermentation Studies, Faculty of Agriculture, Kagoshima University, Kagoshima 890-0065, Japan.
| | - Masatoshi Goto
- Faculty of Agriculture, Saga University, Saga 840-8502, Japan.
| | - Akiko Suyama
- Department of Food and Fermentation Sciences, Faculty of Food and Nutrition Sciences, Beppu University, Beppu 874-8501, Japan.
| | - Kensuke Furukawa
- Department of Food and Fermentation Sciences, Faculty of Food and Nutrition Sciences, Beppu University, Beppu 874-8501, Japan.
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25
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Suvorova IA, Gelfand MS. Comparative Genomic Analysis of the Regulation of Aromatic Metabolism in Betaproteobacteria. Front Microbiol 2019; 10:642. [PMID: 30984152 PMCID: PMC6449761 DOI: 10.3389/fmicb.2019.00642] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 03/14/2019] [Indexed: 01/23/2023] Open
Abstract
Aromatic compounds are a common carbon and energy source for many microorganisms, some of which can even degrade toxic chloroaromatic xenobiotics. This comparative study of aromatic metabolism in 32 Betaproteobacteria species describes the links between several transcription factors (TFs) that control benzoate (BenR, BenM, BoxR, BzdR), catechol (CatR, CatM, BenM), chlorocatechol (ClcR), methylcatechol (MmlR), 2,4-dichlorophenoxyacetate (TfdR, TfdS), phenol (AphS, AphR, AphT), biphenyl (BphS), and toluene (TbuT) metabolism. We characterize the complexity and variability in the organization of aromatic metabolism operons and the structure of regulatory networks that may differ even between closely related species. Generally, the upper parts of pathways, rare pathway variants, and degradative pathways of exotic and complex, in particular, xenobiotic compounds are often controlled by a single TF, while the regulation of more common and/or central parts of the aromatic metabolism may vary widely and often involves several TFs with shared and/or dual, or cascade regulation. The most frequent and at the same time variable connections exist between AphS, AphR, AphT, and BenR. We have identified a novel LysR-family TF that regulates the metabolism of catechol (or some catechol derivative) and either substitutes CatR(M)/BenM, or shares functions with it. We have also predicted several new members of aromatic metabolism regulons, in particular, some COGs regulated by several different TFs.
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Affiliation(s)
- Inna A Suvorova
- Institute for Information Transmission Problems RAS (The Kharkevich Institute), Moscow, Russia
| | - Mikhail S Gelfand
- Institute for Information Transmission Problems RAS (The Kharkevich Institute), Moscow, Russia.,Faculty of Computer Science, Higher School of Economics, Moscow, Russia.,Center of Life Sciences, Skolkovo Institute of Science and Technology, Moscow, Russia
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26
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Wang G, Li F, Liu D, Zheng D, Luo Y, Qu D, Ding T, Qu D. Chemical Prelithiation of Negative Electrodes in Ambient Air for Advanced Lithium-Ion Batteries. ACS Appl Mater Interfaces 2019; 11:8699-8703. [PMID: 30777747 DOI: 10.1021/acsami.8b19416] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This study reports an ambient-air-tolerant approach for negative electrode prelithiation by using 1 M lithium-biphenyl (Li-Bp)/tetrahydrofuran (THF) solution as the prelithiation reagent. Key to this strategy are the relatively stable nature of 1 M Li-Bp/THF in ambient air and the unique electrochemical behavior of Bp in ether and carbonate solvents. With its low redox potential of 0.41 V vs Li/Li+, Li-Bp can prelithiate various active materials with high efficacy. The successful prelithiation of a phosphrous/carbon composite electrode and the notable improvement in its initial Coulombic efficiency (CE) demonstrates the practicality of this strategy.
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Affiliation(s)
- Gongwei Wang
- Department of Mechanical Engineering , University of Wisconsin Milwaukee , Milwaukee , Wisconsin 53211 , United States
| | - Feifei Li
- Department of Mechanical Engineering , University of Wisconsin Milwaukee , Milwaukee , Wisconsin 53211 , United States
| | - Dan Liu
- Department of Chemistry, Chemical Engineering and Life Sciences , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , P. R. China
| | - Dong Zheng
- Department of Mechanical Engineering , University of Wisconsin Milwaukee , Milwaukee , Wisconsin 53211 , United States
| | - Yang Luo
- Department of Mechanical Engineering , University of Wisconsin Milwaukee , Milwaukee , Wisconsin 53211 , United States
| | - Deyu Qu
- Department of Chemistry, Chemical Engineering and Life Sciences , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , P. R. China
| | - Tianyao Ding
- Department of Mechanical Engineering , University of Wisconsin Milwaukee , Milwaukee , Wisconsin 53211 , United States
| | - Deyang Qu
- Department of Mechanical Engineering , University of Wisconsin Milwaukee , Milwaukee , Wisconsin 53211 , United States
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27
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Tan XJ, Zhang LY, Sun YK, Zhou XM. Synthesis, structure and antiproliferative and optical activities of two new biphenyl-derived Schiff bases. Acta Crystallogr C Struct Chem 2019; 75:97-106. [PMID: 30720447 DOI: 10.1107/s2053229618017989] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Accepted: 12/19/2018] [Indexed: 11/10/2022]
Abstract
Two novel Schiff bases derived from indole and biphenyl have been designed and synthesized, namely 3-((E)-{(E)-[1-(biphenyl-4-yl)ethylidene]hydrazinylidene}methyl)-1-methyl-1H-indole (3-BEHMI) acetonitrile monosolvate, C24H21N3·CH3CN, and 3-((E)-{(E)-[1-(biphenyl-4-yl)ethylidene]hydrazinylidene}methyl)-1-methyl-1H-indole (3-BEHEI) acetonitrile monosolvate, C24H21N3·CH3CN. Their structures were characterized by elemental analysis, quadrupole time-of-flight MS, NMR and UV-Vis spectroscopy. The single-crystal packing structure of 3-BEHMI is largely dominated by C-H...π interactions and weak van der Waals interactions. The in vitro cytotoxicity of the two title compounds have been evaluated against two tumour cell lines (A549 human lung cancer and 4T1 mouse breast cancer) and two normal cell lines (MRC-5 normal lung cells and NIH 3T3 fibroblasts) by MTT assay. The results indicate that 3-BEHEI exhibits a slightly weaker antiproliferative capability (IC50 = ∼50 µM) than the previously reported similar Schiff base 3-BEHI (IC50 = ∼20 µM). This is in line with docking results. 3-BEHMI demonstrates a weak cytotoxic activity, with IC50 values around 110 µM, which disagrees with its docking results. Overall, the tested compounds manifest relevant cytotoxicities on the selected cancer cell lines and normal cell lines. The UV-Vis and fluorescence spectra were recorded and reproduced through the TD-DFT method with four types of hybrid density functionals, including B3LYP, M062X, PBE1PBE and WB97XD.
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Affiliation(s)
- Xue Jie Tan
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province 250353, People's Republic of China
| | - Ling Yao Zhang
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province 250353, People's Republic of China
| | - Yuan Kai Sun
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province 250353, People's Republic of China
| | - Xue Min Zhou
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province 250353, People's Republic of China
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28
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Ren L, Jia Y, Zhang R, Lin Z, Zhen Z, Hu H, Yan Y. Insight Into Metabolic Versatility of an Aromatic Compounds-Degrading Arthrobacter sp. YC-RL1. Front Microbiol 2018; 9:2438. [PMID: 30364317 PMCID: PMC6193132 DOI: 10.3389/fmicb.2018.02438] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 09/24/2018] [Indexed: 01/11/2023] Open
Abstract
The genus Arthrobacter is ubiquitously distributed in different natural environments. Many xenobiotic-degrading Arthrobacter strains have been isolated and described; however, few have been systematically characterized with regard to multiple interrelated metabolic pathways and the genes that encode them. In this study, the biodegradability of seven aromatic compounds by Arthrobacter sp. YC-RL1 was investigated. Strain YC-RL1 could efficiently degrade p-xylene (PX), naphthalene, phenanthrene, biphenyl, p-nitrophenol (PNP), and bisphenol A (BPA) under both separated and mixed conditions. Based on the detected metabolic intermediates, metabolic pathways of naphthalene, biphenyl, PNP, and BPA were proposed, which indicated that strain YC-RL1 harbors systematic metabolic pathways toward aromatic compounds. Further, genomic analysis uncovered part of genes involved in the proposed pathways. Both intradiol and extradiol ring-cleavage dioxygenase genes were identified in the genome of strain YC-RL1. Meanwhile, gene clusters predicted to encode the degradation of biphenyl (bph), para-substituted phenols (npd) and protocatechuate (pca) were identified, and bphA1A2BCD was proposed to be a novel biphenyl-degrading gene cluster. The complete metabolic pathway of biphenyl was deduced via intermediates and functional gene analysis (bph and pca gene clusters). One of the these genes encoding ring-cleavage dioxygenase in bph gene cluster, a predicted 2,3-dihydroxybiphenyl 1,2-dioxygenase (BphC) gene, was cloned and its activity was confirmed by heterologous expression. This work systematically illuminated the metabolic versatility of aromatic compounds in strain YC-RL1 via the combination of metabolites identification, genomics analysis and laboratory experiments. These results suggested that strain YC-RL1 might be a promising candidate for the bioremediation of aromatic compounds pollution sites.
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Affiliation(s)
- Lei Ren
- Agricultural College, Guangdong Ocean University, Zhanjiang, China.,Graduate School of Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yang Jia
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, China
| | - Rui Zhang
- Agricultural College, Guangdong Ocean University, Zhanjiang, China.,Shenzhen Research Institute of Guangdong Ocean University, Shenzhen, China
| | - Zhong Lin
- Agricultural College, Guangdong Ocean University, Zhanjiang, China.,Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, China
| | - Zhen Zhen
- Agricultural College, Guangdong Ocean University, Zhanjiang, China
| | - Hanqiao Hu
- Agricultural College, Guangdong Ocean University, Zhanjiang, China
| | - Yanchun Yan
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, China
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29
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Kimura N, Watanabe T, Suenaga H, Fujihara H, Futagami T, Goto M, Hanada S, Hirose J. Pseudomonas furukawaii sp. nov., a polychlorinated biphenyl-degrading bacterium isolated from biphenyl-contaminated soil in Japan. Int J Syst Evol Microbiol 2018; 68:1429-1435. [PMID: 29595413 DOI: 10.1099/ijsem.0.002670] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Strain KF707T was isolated from a biphenyl-contaminated site in Kitakyushu, Japan. Analysis of 16S rRNA gene sequences, retrieved from the whole-genome sequence, revealed that the isolate was closely related to members of the genus Pseudomonas, sharing the highest sequence similarities with Pseudomonas balearica strain SP1402T (DSM 6083) (97.8 %). The DNA G+C chromosome and plasmid content of strain KF707T were 65.5 and 60.5 mol%. The major cellular fatty acids were iso-C15 : 0 and C16 : 1ω7c/C16 : 1ω6c. Polyphasic analysis indicated that strain KF707T represents a novel species of the genus Pseudomonas, for which the name Pseudomonas furukawaii sp. nov. is proposed. The type strain is KF707T (=DSM 10086T=NBRC 110670T).
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Affiliation(s)
- Nobutada Kimura
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Takahito Watanabe
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Japan
| | - Hikaru Suenaga
- Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | | | - Taiki Futagami
- Research Center for Fermentation Studies, Faculty of Agriculture, Kagoshima University, Kagoshima, Japan
| | - Masatoshi Goto
- Department of Applied Biochemistry and Food Science, Saga University, Saga, Japan
| | - Satoshi Hanada
- Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Japan
| | - Jun Hirose
- Department of Applied Chemistry, Faculty of Engineering, University of Miyazaki, Miyazaki, Japan
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30
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Tharamak S, Knittl-Frank C, Manaprasertsak A, Pengsook A, Suchy L, Schuller P, Happl B, Roller A, Widhalm M. Economy of Catalyst Synthesis-Convenient Access to Libraries of Di- and Tetranaphtho Azepinium Compounds. Molecules 2018; 23:E750. [PMID: 29587344 PMCID: PMC6017052 DOI: 10.3390/molecules23040750] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 03/14/2018] [Accepted: 03/20/2018] [Indexed: 11/16/2022] Open
Abstract
Efficient optimization procedures in chiral catalysis are usually linked to a straightforward strategy to access groups of structurally similar catalysts required for fine-tuning. The ease of building up such ligand libraries can be increased when the structure-modifying step (introduction of a substituent) is done at a later stage of the synthesis. This is demonstrated for the extended family of di- and tetranaphtho azepinium compounds, widely used as chiral phase transfer catalysts (PTC). Using 2,6-diiodo-4,5-dihydro-3H-dinaphtho[2,1-c:1',2'-e]azepine and 4,8-diiodo-6,7-dihydro-5H-dibenzo[c,e]azepine, respectively, as key intermediates, 18 spiro-azepinium compounds were synthesized in a total yield of 25-42% over 6-7 steps from 1,1'-binaphthyl-2,2'-dicarboxylic acid or diphenic acid, respectively. The replacement of iodo groups with aryl substituents was performed as the last or the penultimate step of the synthesis.
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Affiliation(s)
- Sorachat Tharamak
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (S.T.); (A.M.); (A.P.)
| | - Christian Knittl-Frank
- Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, Wien 1090, Austria; (C.K.-F.); (L.S.); (P.S.)
| | - Auraya Manaprasertsak
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (S.T.); (A.M.); (A.P.)
| | - Anchulee Pengsook
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (S.T.); (A.M.); (A.P.)
| | - Lydia Suchy
- Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, Wien 1090, Austria; (C.K.-F.); (L.S.); (P.S.)
| | - Philipp Schuller
- Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, Wien 1090, Austria; (C.K.-F.); (L.S.); (P.S.)
| | - Barbara Happl
- Institute of Inorganic Chemistry, University of Vienna, Währinger Straße 42, Wien 1090, Austria; (B.H.); (A.R.)
| | - Alexander Roller
- Institute of Inorganic Chemistry, University of Vienna, Währinger Straße 42, Wien 1090, Austria; (B.H.); (A.R.)
| | - Michael Widhalm
- Institute of Chemical Catalysis, University of Vienna, Währinger Straße 38, Wien 1090, Austria
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Garrido-Sanz D, Manzano J, Martín M, Redondo-Nieto M, Rivilla R. Metagenomic Analysis of a Biphenyl-Degrading Soil Bacterial Consortium Reveals the Metabolic Roles of Specific Populations. Front Microbiol 2018; 9:232. [PMID: 29497412 PMCID: PMC5818466 DOI: 10.3389/fmicb.2018.00232] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 01/30/2018] [Indexed: 01/09/2023] Open
Abstract
Polychlorinated biphenyls (PCBs) are widespread persistent pollutants that cause several adverse health effects. Aerobic bioremediation of PCBs involves the activity of either one bacterial species or a microbial consortium. Using multiple species will enhance the range of PCB congeners co-metabolized since different PCB-degrading microorganisms exhibit different substrate specificity. We have isolated a bacterial consortium by successive enrichment culture using biphenyl (analog of PCBs) as the sole carbon and energy source. This consortium is able to grow on biphenyl, benzoate, and protocatechuate. Whole-community DNA extracted from the consortium was used to analyze biodiversity by Illumina sequencing of a 16S rRNA gene amplicon library and to determine the metagenome by whole-genome shotgun Illumina sequencing. Biodiversity analysis shows that the consortium consists of 24 operational taxonomic units (≥97% identity). The consortium is dominated by strains belonging to the genus Pseudomonas, but also contains betaproteobacteria and Rhodococcus strains. whole-genome shotgun (WGS) analysis resulted in contigs containing 78.3 Mbp of sequenced DNA, representing around 65% of the expected DNA in the consortium. Bioinformatic analysis of this metagenome has identified the genes encoding the enzymes implicated in three pathways for the conversion of biphenyl to benzoate and five pathways from benzoate to tricarboxylic acid (TCA) cycle intermediates, allowing us to model the whole biodegradation network. By genus assignment of coding sequences, we have also been able to determine that the three biphenyl to benzoate pathways are carried out by Rhodococcus strains. In turn, strains belonging to Pseudomonas and Bordetella are the main responsible of three of the benzoate to TCA pathways while the benzoate conversion into TCA cycle intermediates via benzoyl-CoA and the catechol meta-cleavage pathways are carried out by beta proteobacteria belonging to genera such as Achromobacter and Variovorax. We have isolated a Rhodococcus strain WAY2 from the consortium which contains the genes encoding the three biphenyl to benzoate pathways indicating that this strain is responsible for all the biphenyl to benzoate transformations. The presented results show that metagenomic analysis of consortia allows the identification of bacteria active in biodegradation processes and the assignment of specific reactions and pathways to specific bacterial groups.
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Affiliation(s)
| | | | | | | | - Rafael Rivilla
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain
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Martínez-Martínez AJ, Justice S, Fleming BJ, Kennedy AR, Oswald IDH, O’Hara CT. Templated deprotonative metalation of polyaryl systems: Facile access to simple, previously inaccessible multi-iodoarenes. Sci Adv 2017; 3:e1700832. [PMID: 28695201 PMCID: PMC5493416 DOI: 10.1126/sciadv.1700832] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 04/19/2017] [Indexed: 06/07/2023]
Abstract
The development of new methodologies to affect non-ortho-functionalization of arenes has emerged as a globally important arena for research, which is key to both fundamental studies and applied technologies. A range of simple arene feedstocks (namely, biphenyl, meta-terphenyl, para-terphenyl, 1,3,5-triphenylbenzene, and biphenylene) is transformed to hitherto unobtainable multi-iodoarenes via an s-block metal sodium magnesiate templated deprotonative approach. These iodoarenes have the potential to be used in a whole host of high-impact transformations, as precursors to key materials in the pharmaceutical, molecular electronic, and nanomaterials industries. To prove the concept, we transformed biphenyl to 3,5-bis(N-carbazolyl)-1,1'-biphenyl, a novel isomer of 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CPB), a compound which is currently widely used as a host material for organic light-emitting diodes.
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Affiliation(s)
- Antonio J. Martínez-Martínez
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK
| | - Stephen Justice
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK
| | - Ben J. Fleming
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK
| | - Alan R. Kennedy
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK
| | - Iain D. H. Oswald
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK
| | - Charles T. O’Hara
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK
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Ishidate R, Ikai T, Kanoh S, Yashima E, Maeda K. Chromatographic enantioseparation by poly( biphenylylacetylene) derivatives with memory of both axial chirality and macromolecular helicity. Chirality 2017; 29:120-129. [PMID: 28370343 DOI: 10.1002/chir.22687] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 12/22/2016] [Accepted: 12/23/2016] [Indexed: 11/08/2022]
Abstract
Novel poly(biphenylylacetylene) derivatives bearing two acetyloxy groups at the 2- and 2'-positions and an alkoxycarbonyl group at the 4'-position of the biphenyl pendants (poly-Ac's) were synthesized by the polymerization of the corresponding biphenylylacetylenes using a rhodium catalyst. The obtained stereoregular (cis-transoidal) poly-Ac's folded into a predominantly one-handed helical conformation accompanied by a preferred-handed axially twisted conformation of the biphenyl pendants through noncovalent interactions with a chiral alcohol and both the induced main-chain helicity and the pendant axial chirality were maintained, that is, memorized, after complete removal of the chiral alcohol. The stability of the helicity memory of the poly-Ac's in a solution was lower than that of the analogous poly(biphenylylacetylene)s bearing two methoxymethoxy groups at the 2- and 2'-positions of the biphenyl pendants (poly-MOM's). In the solid state, however, the helicity memory of the poly-Ac's was much more stable and showed a better chiral recognition ability toward several racemates than that of the previously reported poly-MOM when used as a chiral stationary phase for high-performance liquid chromatography. In particular, the poly-Ac-based CSP with a helicity memory efficiently separated racemic benzoin derivatives into enantiomers.
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Affiliation(s)
- Ryoma Ishidate
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Japan.,Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Tomoyuki Ikai
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Japan
| | - Shigeyoshi Kanoh
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Japan
| | - Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Katsuhiro Maeda
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Japan
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Abstract
A new biphenyl derivative 5,5'-dimethoxybiphenyl-2,2'-diol (1), together with five known compounds (2-5), was isolated from the mangrove endophytic fungus Phomopsis longicolla HL-2232. The structures of these compounds were elucidated using comprehensive spectroscopic methods. The absolute configuration of 4 was determined by single-crystal X-ray diffraction for the first time. The inhibitory activities of all compounds against two Vibrio bacteria were evaluated.
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Affiliation(s)
- Xiao-Bao Li
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P.R. China
| | - Guang-Ying Chen
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P.R. China
| | - Rui-Jie Liu
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P.R. China
| | - Cai-Juan Zheng
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P.R. China
| | - Xin-Ming Song
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P.R. China
| | - Chang-Ri Han
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P.R. China.,b Department of Chemistry , Hainan Institute of Science and Technology , Haikou , P.R. China
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35
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Xin N, Wang J, Jia C, Liu Z, Zhang X, Yu C, Li M, Wang S, Gong Y, Sun H, Zhang G, Liu Z, Zhang G, Liao J, Zhang D, Guo X. Stereoelectronic Effect-Induced Conductance Switching in Aromatic Chain Single-Molecule Junctions. Nano Lett 2017; 17:856-861. [PMID: 28071918 DOI: 10.1021/acs.nanolett.6b04139] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Biphenyl, as the elementary unit of organic functional materials, has been widely used in electronic and optoelectronic devices. However, over decades little has been fundamentally understood regarding how the intramolecular conformation of biphenyl dynamically affects its transport properties at the single-molecule level. Here, we establish the stereoelectronic effect of biphenyl on its electrical conductance based on the platform of graphene-molecule single-molecule junctions, where a specifically designed hexaphenyl aromatic chain molecule is covalently sandwiched between nanogapped graphene point contacts to create stable single-molecule junctions. Both theoretical and temperature-dependent experimental results consistently demonstrate that phenyl twisting in the aromatic chain molecule produces different microstates with different degrees of conjugation, thus leading to stochastic switching between high- and low-conductance states. These investigations offer new molecular design insights into building functional single-molecule electrical devices.
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Affiliation(s)
- Na Xin
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Jinying Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
- Department of Applied Physics, University of Tokyo , Hongo, Tokyo 113-8656, Japan
| | - Chuancheng Jia
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Zitong Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Xisha Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Chenmin Yu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Mingliang Li
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Shuopei Wang
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Yao Gong
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Hantao Sun
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University , Beijing 100871, China
| | - Guanxin Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Zhirong Liu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Guangyu Zhang
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Jianhui Liao
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University , Beijing 100871, China
| | - Deqing Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Xuefeng Guo
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
- Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, China
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Jiajun D, Maza JR, Xu Y, Xu T, Momen R, Kirk SR, Jenkins S. A stress tensor and QTAIM perspective on the substituent effects of biphenyl subjected to torsion. J Comput Chem 2016; 37:2508-17. [PMID: 27546220 DOI: 10.1002/jcc.24476] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/26/2016] [Accepted: 08/06/2016] [Indexed: 11/11/2022]
Abstract
The Quantum Theory of Atoms in Molecules (QTAIM) defines quantities in 3D space that can be easily obtained from routine quantum chemical calculations. The present investigation shows that local properties can be related quantitatively to measures traditionally connected to experimental data, such as Hammett constants. We consider the specific case of substituted biphenyl to quantify the effects of a torsion φ, 0.0° ≤ φ ≤ 180.0°, of the C-C bond linking the two phenyl rings for C12 H9 -x, where x = N(CH3 )2 , NH2 , CH3 , CHO, CN, NO2, on the entire molecule. QTAIM interpreted Hammett constants, aΔH(rb ) are introduced and constructed using the difference between the H(rb ) value of C12 H9 -x and the C12 H9 -H, biphenyl which is the reference molecule, with a constant of proportionality a. This investigation unexpectedly yields very good or good agreement for the x groups with the Hammett para-, meta-, and ortho-substituent constants and is checked against para-substituted benzene. We then proceed to present the interpreted substituent constants of seven new biphenyl substituent groups, where tabulated Hammett substituent constant values are not available; y = SiH3 , ZnCl, COOCH3 , SO2 NH2 , SO2 OH, COCl, CB3 . Consistency is found for the QTAIM interpreted biphenyl substituent constants of the seven new groups y independently using the stress tensor polarizability Pσ . In addition, a selection of future applications is discussed that highlight the usefulness of this approach. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- D Jiajun
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research and Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province of MOE, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha Hunan, 410081, China
| | - J R Maza
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research and Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province of MOE, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha Hunan, 410081, China
| | - Y Xu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research and Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province of MOE, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha Hunan, 410081, China
| | - T Xu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research and Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province of MOE, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha Hunan, 410081, China
| | - R Momen
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research and Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province of MOE, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha Hunan, 410081, China
| | - S R Kirk
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research and Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province of MOE, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha Hunan, 410081, China
| | - S Jenkins
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research and Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province of MOE, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha Hunan, 410081, China
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Zhou L, Yang J, Yang G, Kang C, Xiao W, Lv C, Wang S, Tang J, Guo L. Biphenyl Phytoalexin in Sorbus pohuashanensis Suspension Cell Induced by Yeast Extract. Molecules 2016; 21:molecules21091180. [PMID: 27649118 PMCID: PMC6273693 DOI: 10.3390/molecules21091180] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 08/16/2016] [Accepted: 08/31/2016] [Indexed: 01/03/2023] Open
Abstract
Biphenyls are unique phytoalexins de novo synthesized in plants in response to pathogen attack. These compounds are found in Maloideae, a subfamily of the Rosaceae. The anti-microbial activities of biphenyls have been reported in a number of studies and they appear to represent an important defense strategy against pathogens common in the Maloideae, such as species in Malus, Pyrus, Sorbus, and Chaenomeles. Here, cell suspension cultures of Sorbus pohuashanensis were established to study biphenyl phytoalexins formation after yeast extract (YE) treatment. An ultra-performance liquid chromatography (UPLC) method coupled with quadrupole time of flight mass spectrometry (Q-TOF-MS) LC−MS/MS was applied to determine the time course of these biphenyl biomarkers accumulation in YE-treated S. pohuashanensis suspension cells. The results of quantitative analyses show the content of Noraucuparin, 2′-Hydroxyaucuparin, and their glycosides initially increased, then decreased over time. The Noraucuparin content reached its highest (225.76 μg·g−1) at 18 h after treatment, 6 hours earlier than that of Noraucuparin 5-O-β-d-glucopyranoside. The content of 2′-Hydroxyaucuparin reached its highest (422.75 μg·g−1) at 30 h after treatment, also earlier than that of its glycoside. The understanding of phytoalexin metabolism in this study may provide a basis for improving Maloideae resistance to pathogens.
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Affiliation(s)
- Liangyun Zhou
- The State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
| | - Jian Yang
- The State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
| | - Guang Yang
- The State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
| | - Chuanzhi Kang
- The State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
| | - Wenjuan Xiao
- Pixian Chinese Medicine Hospital, Chengdu 611730, China.
| | - Chaogeng Lv
- The State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
| | - Sheng Wang
- The State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
| | - Jinfu Tang
- The State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
| | - Lanping Guo
- The State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
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Khan FAK, Patil RH, Shinde DB, Sangshetti JN. Design and synthesis of 4'-((5-benzylidene-2,4-dioxothiazolidin-3-yl)methyl) biphenyl-2-carbonitrile analogs as bacterial peptide deformylase inhibitors. Chem Biol Drug Des 2016; 88:938-944. [PMID: 27401234 DOI: 10.1111/cbdd.12817] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/28/2016] [Accepted: 07/02/2016] [Indexed: 11/30/2022]
Abstract
Herein, we report the synthesis and screening of 4'-((5-benzylidene-2,4-dioxothiazolidin-3-yl)methyl)biphenyl-2-carbonitrile analogs 11(a-j) as bacterial peptide deformylase (PDF) enzyme inhibitors. The compounds 11b (IC50 value = 139.28 μm), 11g (IC50 value = 136.18 μm), and 11h (IC50 value = 131.65 μm) had shown good PDF inhibition activity. The compounds 11b (MIC range = 103.36-167.26 μg/mL), 11g (MIC range = 93.75-145.67 μg/mL), and 11h (MIC range = 63.61-126.63 μg/mL) had also shown potent antibacterial activity when compared with standard ampicillin (MIC range = 100.00-250.00 μg/mL). Thus, the active derivatives were not only PDF inhibitors but also efficient antibacterial agents. To gain more insight on the binding mode of the compounds with PDF enzyme, the synthesized compounds 11(a-j) were docked against PDF enzyme of Escherichia coli and compounds exhibited good binding properties. The results suggest that this class of compounds has potential for development and use in future as antibacterial drugs.
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Affiliation(s)
- Firoz A Kalam Khan
- Y.B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Campus, Aurangabad, Maharashtra, India
| | - Rajendra H Patil
- Department of Biotechnology, Savitribai Phule Pune University, Pune, Maharashtra, India
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Abstract
By using transposon mutants it was demonstrated that biphenyl catabolic Bph enzymes have very relaxed substrate specificities for a variety of aromatic compounds. However, the substrate ranges of the Bph enzymes of two strains used were different from each other. Pseudomonas pseudoalcaligenes KF707 Bph enzymes converted biphenyls substituted with halogen, hydroxyl, methyl, and nitro groups, and biphenylrelated compounds such as biphenylmethane, dibenzyl, diphenylether, diphenylamine, and benzalacetophenone. The same enzyme system was almost inactive for benzene derivatives. Pseudomonas sp. KF712 Bph enzymes showed much broader substrate specificities than those of KF707, since the bphC mutant of this strain converted many benzene derivatives as well as various biphenyls and related compounds to the corresponding dihydroxy compounds.
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Atago Y, Shimodaira J, Araki N, Bin Othman N, Zakaria Z, Fukuda M, Futami J, Hara H. Identification of novel extracellular protein for PCB/ biphenyl metabolism in Rhodococcus jostii RHA1. Biosci Biotechnol Biochem 2016; 80:1012-9. [PMID: 26828632 DOI: 10.1080/09168451.2015.1127134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Rhodococcus jostii RHA1 (RHA1) degrades polychlorinated biphenyl (PCB) via co-metabolism with biphenyl. To identify the novel open reading frames (ORFs) that contribute to PCB/biphenyl metabolism in RHA1, we compared chromatin immunoprecipitation chip and transcriptomic data. Six novel ORFs involved in PCB/biphenyl metabolism were identified. Gene deletion mutants of these 6 ORFs were made and were tested for their ability to grow on biphenyl. Interestingly, only the ro10225 deletion mutant showed deficient growth on biphenyl. Analysis of Ro10225 protein function showed that growth of the ro10225 deletion mutant on biphenyl was recovered when exogenous recombinant Ro10225 protein was added to the culture medium. Although Ro10225 protein has no putative secretion signal sequence, partially degraded Ro10225 protein was detected in conditioned medium from wild-type RHA1 grown on biphenyl. This Ro10225 fragment appeared to form a complex with another PCB/biphenyl oxidation enzyme. These results indicated that Ro10225 protein is essential for the formation of the PCB/biphenyl dioxygenase complex in RHA1.
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Affiliation(s)
- Yuki Atago
- a Division of Chemistry and Biochemistry, Department of Biotechnology , Graduate School of Natural Science and Technology, Okayama University , Okayama , Japan
| | - Jun Shimodaira
- b Department of Bioengineering , Nagaoka University of Technology , Nagaoka , Japan
| | - Naoto Araki
- b Department of Bioengineering , Nagaoka University of Technology , Nagaoka , Japan
| | - Nor'azizi Bin Othman
- d Department of Mechanical Precision Engineering , Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia , Kuala Lumpur , Malaysia
| | - Zuriati Zakaria
- c Department of Environmental Engineering and Green Technology , Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia , Kuala Lumpur , Malaysia
| | - Masao Fukuda
- b Department of Bioengineering , Nagaoka University of Technology , Nagaoka , Japan
| | - Junichiro Futami
- a Division of Chemistry and Biochemistry, Department of Biotechnology , Graduate School of Natural Science and Technology, Okayama University , Okayama , Japan
| | - Hirofumi Hara
- c Department of Environmental Engineering and Green Technology , Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia , Kuala Lumpur , Malaysia
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Booth SC, Weljie AM, Turner RJ. Metabolomics reveals differences of metal toxicity in cultures of Pseudomonas pseudoalcaligenes KF707 grown on different carbon sources. Front Microbiol 2015; 6:827. [PMID: 26347721 PMCID: PMC4538868 DOI: 10.3389/fmicb.2015.00827] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 07/27/2015] [Indexed: 12/23/2022] Open
Abstract
Co-contamination of metals and organic pollutants is a global problem as metals interfere with the metabolism of complex organics by bacteria. Based on a prior observation that metal tolerance was altered by the sole carbon source being used for growth, we sought to understand how metal toxicity specifically affects bacteria using an organic pollutant as their sole carbon source. To this end metabolomics was used to compare cultures of Pseudomonas pseudoalcaligenes KF707 grown on either biphenyl (Bp) or succinate (Sc) as the sole carbon source in the presence of either aluminum (Al) or copper (Cu). Using multivariate statistical analysis it was found that the metals caused perturbations to more cellular processes in the cultures grown on Bp than those grown on Sc. Al induced many changes that were indicative of increased oxidative stress as metabolites involved in DNA damage and protection, the Krebs cycle and anti-oxidant production were altered. Cu also caused metabolic changes that were indicative of similar stress, as well as appearing to disrupt other key enzymes such as fumarase. Additionally, both metals caused the accumulation of Bp degradation intermediates indicating that they interfered with Bp metabolism. Together these results provide a basic understanding of how metal toxicity specifically affects bacteria at a biochemical level during the degradation of an organic pollutant and implicate the catabolism of this carbon source as a major factor that exacerbates metal toxicity.
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Affiliation(s)
- Sean C Booth
- Department of Biological Sciences, University of Calgary, Calgary AB, Canada
| | - Aalim M Weljie
- Department of Biological Sciences, University of Calgary, Calgary AB, Canada ; Department of Systems Pharmacology and Translational Therapeutics, Smilow Centre for Translational Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia PA, USA
| | - Raymond J Turner
- Department of Biological Sciences, University of Calgary, Calgary AB, Canada ; Biofilm Research Group, University of Calgary, Calgary AB, Canada
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Kanthasamy K, Pfnür H. Conductance through single biphenyl molecules: symmetric and asymmetric coupling to electrodes. Beilstein J Nanotechnol 2015; 6:1690-7. [PMID: 26425419 PMCID: PMC4578413 DOI: 10.3762/bjnano.6.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 07/10/2015] [Indexed: 06/05/2023]
Abstract
The contacts and the chemical bonds formed between metallic electrodes and molecules determine to a large extent the conductive properties of single molecular junctions, which represent the smallest possible active elements in an electronic circuit. We therefore investigated in a comparative study, using the break junction technique (MCBJ), the conductive properties of [1,1'-biphenyl]-4,4'-dithiol (M1) and of 4'-mercapto-[1,1'-biphenyl]-4-carbonitrile (M2) between gold electrodes. As a function of electrode separation, characterized by the conductance close to 0 V, we found several plateaus of relative stability, with those close to 0.01G0 being the most pronounced. The overall conductance of symmetric and asymmetric molecules were surprisingly similar, only the range of stability was smaller for M2. While M1 yielded symmetric I-V-curves, only small asymmetries were detected for M2. These are also reflected in the comparable values for coupling parameters using the single level resonance model. The high conductance for the asymmetric molecule is interpreted as a result of coherent coupling of electronic states through the whole molecule, so that the outcome cannot be predicted just by adding conductive properties of individual molecular groups.
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Affiliation(s)
- Karthiga Kanthasamy
- Institut für Festkörperphysik, ATMOS, Leibniz Universität Hannover, Appelstr. 2, D-30167 Hannover, Germany
| | - Herbert Pfnür
- Institut für Festkörperphysik, ATMOS, Leibniz Universität Hannover, Appelstr. 2, D-30167 Hannover, Germany
- Laboratorium für Nano- und Quantenengineering, Leibniz Universität Hannover, Schneiderberg 30, D-30167 Hannover, Germany
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Abstract
The mechanism of the gold nanocluster-catalyzed aerobic homocoupling of arylboronic acids has been elucidated by means of DFT calculations with Au20(-) as a model cluster for the Au:[poly(N-vinylpyrrolidin-2-one)] catalyst. We found that oxygen affects the adsorption of phenylboronic acid and, by lowering the energy barrier, a water molecule enhances dissociation of the C-B bond, which is probably the rate-determining step. The key role of oxygen is in activating the surface of the gold cluster by generating Lewis acidic sites for adsorption and activation of the phenylboronic acid, leading to the formation of biphenyl through a superoxo-like species. Moreover, the oxygen adsorbed on the Au nanocluster can act as an oxidant for phenylboronic acid, giving phenol as a byproduct. As shown by NBO analysis, the basic aqueous reaction medium facilitates the reductive elimination process by weakening the Au-C bond, thereby enhancing the formation of biphenyl. The coupling of phenyl and reductive elimination of biphenyl occur at the top or facet site with low-energy-barrier through spillover of phenyl group on Au NC. The present findings are useful for the interpretation or design of other coupling reactions with Au NC.
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Affiliation(s)
- Sangita Karanjit
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Masahiro Ehara
- Research Center for Computational Science, Institute for Molecular Science, 38 Nishigonaka, Myodaiji, Okazaki, 444-8585, Japan.
| | - Hidehiro Sakurai
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan.
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Shumkova ES, Egorova DO, Boronnikova SV, Plotnikova EG. [Polymorphism of the bphA genes in bacteria destructing biphenyl/chlorinated biphenils]. Mol Biol (Mosk) 2015; 49:638-648. [PMID: 26299864 DOI: 10.7868/s0026898415040151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 02/05/2015] [Indexed: 06/04/2023]
Abstract
Polychlorinated biphenyls (PCBs) are persistent organic pollutants. Biphenyl 2,3-dioxygenase (BDO) is a key enzyme that determines the range of PCBs oxidized by a bacterial strain. BDO subunit α (BphA1) plays an essential role in substrate recognition and binding. The genes for dioxygenases that hydroxylate aromatic rings were screened and analyzed phylogenetically. Genes found in biphenyl-oxidizing Rhodococcus erythropolis strains G12a, B7b, and B106a proved to be similar to the published nucleotide sequences of the Rhodococcus sp. HA99 and R04 and Novosphingobium aromaticivorans F199 bphA1 genes, which code for the α-subunits that do not belong to the biphenyl/toluene dioxygenase (B/TDO) family. PCB-destructing R. ruber P25 was found to possess a unique bphA1 gene, which clusters together with the phenylpropionate dioxygenase (PPDO) α-subunits of Mycobacterium vanbaalenii PYR-1 and Frankia sp. EuI1c. The deduced amino acid sequences of the genes were analyzed. The amino acids of the BDO active site in R. wratislaviensis P1, P12, P13, and P20 (bphA1 genes of the B/TDO family) were identical to those of the active PCB degrader R. jostii RHA1. The Rhodococcus strains in question were shown to be active toward both orthoand parachlorinated ring of 2,4'-dichlorobiphenyl. The α-subunit amino acids responsible for the substrate specificity of the enzyme in Pseudomonas sp. S9, S13, S210, S211, and S212 (B/TDO family) were the same as in P. pseudoalcaligenes KF707. The Pseudomonas strains were active toward the para-chlorinated ring of 2,4'-dichlorobiphenyl. The results of screening bacterial strains for bphA1 can be used to identify the biotechnologically promising PCB destructors.
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Affiliation(s)
- E S Shumkova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia
- Institute of Ecology and Genetics of Microorganisms, Ural Branch, Russian Academy of Sciences, Perm, 614081 Russia
| | - D O Egorova
- Institute of Ecology and Genetics of Microorganisms, Ural Branch, Russian Academy of Sciences, Perm, 614081 Russia
| | | | - E G Plotnikova
- Institute of Ecology and Genetics of Microorganisms, Ural Branch, Russian Academy of Sciences, Perm, 614081 Russia
- Perm State University, Perm, 614990 Russia
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Kim HY, Shin SM, Ham M, Lim CH, Byeon SH. Exposure monitoring and risk assessment of biphenyl in the workplace. Int J Environ Res Public Health 2015; 12:5116-28. [PMID: 25985312 DOI: 10.3390/ijerph120505116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Revised: 04/27/2015] [Accepted: 04/27/2015] [Indexed: 11/16/2022]
Abstract
This study was performed to assess exposure to and the risk caused by biphenyl in the workplace. Biphenyl is widely used as a heat transfer medium and as an emulsifier and polish in industry. Vapor or high levels of dust inhalation and dermal exposure to biphenyl can cause eye inflammation, irritation of respiratory organs, and permanent lesions in the liver and nervous system. In this study, the workplace environment concentrations were assessed as central tendency exposure and reasonable maximum exposure and were shown to be 0.03 and 0.12 mg/m3, respectively. In addition, the carcinogenic risk of biphenyl as determined by risk assessment was 0.14 × 10−4 (central tendency exposure) and 0.56 × 10−4 (reasonable maximum exposure), which is below the acceptable risk value of 1.0 × 10−4. Furthermore, the central tendency exposure and reasonable maximum exposure hazard quotients were 0.01 and 0.06 for oral toxicity, 0.05 and 0.23 for inhalation toxicity, and 0.08 and 0.39 for reproduction toxicity, respectively, which are all lower than the acceptable hazard quotient of 1.0. Therefore, exposure to biphenyl was found to be safe in current workplace environments. Because occupational exposure limits are based on socioeconomic assessment, they are generally higher than true values seen in toxicity experiments. Based on the results of exposure monitoring of biphenyl, the current occupational exposure limits in Korea could be reviewed.
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Zhao H, Moroni E, Colombo G, Blagg BSJ. Identification of a new scaffold for hsp90 C-terminal inhibition. ACS Med Chem Lett 2014; 5:84-8. [PMID: 24900777 DOI: 10.1021/ml400404s] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Accepted: 11/10/2013] [Indexed: 01/07/2023] Open
Abstract
Inhibition of Hsp90 C-terminal function is an advantageous therapeutic paradigm for the treatment of cancer. Currently, the majority of Hsp90 C-terminal inhibitors are derived from novobiocin, a natural product traditionally used as an antibiotic. Assisted by molecular docking studies, a scaffold containing a biphenyl moiety in lieu of the coumarin ring system found in novobiocin was identified for development of new Hsp90 C-terminal inhibitors. Initial structure-activity studies led to derivatives that manifest good antiproliferative activity against two breast cancer cell lines through Hsp90 inhibition. This platform serves as a scaffold upon which new Hsp90 C-terminal inhibitors can be readily assembled for further investigation.
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Affiliation(s)
- Huiping Zhao
- Department of Medicinal Chemistry, 1251 Wescoe Hall Drive, Malott
4070, The University of Kansas, Lawrence, Kansas 66045-7563, United States
| | - Elisabetta Moroni
- Istituto di Chimica del Riconoscimento Molecolare, CNR, Via
Mario Bianco 9, 20131 Milano, Italy
| | - Giorgio Colombo
- Istituto di Chimica del Riconoscimento Molecolare, CNR, Via
Mario Bianco 9, 20131 Milano, Italy
| | - Brian S. J. Blagg
- Department of Medicinal Chemistry, 1251 Wescoe Hall Drive, Malott
4070, The University of Kansas, Lawrence, Kansas 66045-7563, United States
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Affiliation(s)
- Gabriel E Rudebusch
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR 97403-1253, USA
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Jung KH, Kim HK, Park JA, Nam KS, Lee GH, Chang Y, Kim TJ. Gd Complexes of DO3A-( Biphenyl-2,2'-bisamides) Conjugates as MRI Blood-Pool Contrast Agents. ACS Med Chem Lett 2012; 3:1003-7. [PMID: 24900422 DOI: 10.1021/ml300223b] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 10/23/2012] [Indexed: 11/29/2022] Open
Abstract
We report the synthesis of DO3A derivatives of 2,2'-diaminobiphenyl (1a,b) and their Gd complexes of the type [Gd(1)(H2O)]·xH2O (2a,b) for use as new MRI blood-pool contrast agents (BPCAs) that provide strong and prolonged vascular enhancement. Pharmacokinetic inertness of 2 compares well with that of structurally related Dotarem, a DOTA-based MRI CA currently in use. The R 1 relaxivity in water reaches 7.3 mM(-1) s(-1), which is approximately twice as high as that of Dotarem (R 1 = 3.9 mM(-1) s(-1)). They show interaction with HSA to give association constants (K a) in the order of two (∼10(2)), revealing the existence of the blood-pool effect. The in vivo MR images of mice obtained with 2 are coherent, showing strong signal enhancement in both heart, abdominal aorta, and small vessels. Furthermore, the brain tumor is vividly enhanced for an extended period of time.
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Affiliation(s)
| | | | - Ji-Ae Park
- Molecular Imaging Research Center, Korea Institute of Radiological Medical Science, Nowon-gil 75, Seoul, 139-706, Korea
| | | | | | - Yongmin Chang
- Department of Radiology & Molecular Medicine, Kyungpook National University, Dongin-dong 2-ga, Daegu, 700-422, Korea
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