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Sousa RCN, Confessor VPP, Da Silva AKB, Almeida AR, Pinheiro FASD, Ferreira LS. Biomimetic Chemical Reactions with Natural Products Using Metalloporphyrins and Salen Complexes as Catalysts: A Brief Review. Chem Biodivers 2024; 21:e202400668. [PMID: 38763894 DOI: 10.1002/cbdv.202400668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 05/21/2024]
Abstract
The cytochrome P450 is a superfamily of hemoproteins mainly present in the liver and are versatile biocatalysts. They participate in the primary metabolism and biosynthesis of various secondary metabolites. Chemical catalysts are utilized to replicate the activities of enzymes. Metalloporphyrins and Salen complexes can contribute to the products' characterization and elucidate biotransformation processes, which are investigated during pre-clinical trials. These catalysts also help discover biologically active compounds and get better yields of products of industrial interest. This review aims to investigate which natural product classes are being investigated by biomimetic chemical models and the functionalities applied in the use of these catalysts. A limited number of studies were observed, with terpenes and alkaloids being the most investigated natural product classes. The research also revealed that Metalloporphyrins are still the most popular in the studies, and the identity and yield of the products obtained depend on the reaction system conditions.
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Affiliation(s)
- Rita C N Sousa
- Postgraduate Program in Chemistry, Chemistry Institute, Federal University of Rio Grande do Norte, 59078-900, Natal-RN, Brazil
| | - Vitor P P Confessor
- Pharmacy Department, Federal University of Rio Grande do Norte, 59012-570, Natal-RN, Brazil
| | - Antonio K B Da Silva
- Pharmacy Department, Federal University of Rio Grande do Norte, 59012-570, Natal-RN, Brazil
| | - Addison R Almeida
- Postgraduate Program in Chemistry, Chemistry Institute, Federal University of Rio Grande do Norte, 59078-900, Natal-RN, Brazil
- Pharmacy Department, Federal University of Rio Grande do Norte, 59012-570, Natal-RN, Brazil
| | | | - Leandro S Ferreira
- Postgraduate Program in Chemistry, Chemistry Institute, Federal University of Rio Grande do Norte, 59078-900, Natal-RN, Brazil
- Pharmacy Department, Federal University of Rio Grande do Norte, 59012-570, Natal-RN, Brazil
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2
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Tessaro PS, Meireles AM, Guimarães AS, Schmitberger B, Lage ALA, Patrício PSDO, Martins DCDS, DeFreitas-Silva G. The polymerization of carvacrol catalyzed by Mn-porphyrins: obtaining the desired product guided by the choice of solvent, oxidant, and catalyst. NEW J CHEM 2022. [DOI: 10.1039/d2nj03171j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Less polar solvents could modulate the catalytic activity of Mn(iii)-porphyrins in carvacrol's oxidation leading to polymer/oligomer formation instead of thymoquinone formation.
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Affiliation(s)
- Patrícia Salvador Tessaro
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31.270-901, Brazil
| | - Alexandre Moreira Meireles
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31.270-901, Brazil
| | - Adriano Silva Guimarães
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31.270-901, Brazil
| | - Bernardo Schmitberger
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31.270-901, Brazil
| | - Ana Luísa Almeida Lage
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31.270-901, Brazil
| | | | - Dayse Carvalho da Silva Martins
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31.270-901, Brazil
| | - Gilson DeFreitas-Silva
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31.270-901, Brazil
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3
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Khusnutdinova EF, Baikova IP, Lobov AN, Kazakova OB. Uncommon Ozonolysis of 2,3-Seco-24,28-dinorlupa-4(23),20(29)-diene-2,17-dicarbonitrile. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021090049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Wang F, Xiao K, Shi L, Bing L, Han D, Wang G. Catalytic oxidative desulfurization of model fuel utilizing functionalized HMS catalysts: characterization, catalytic activity and mechanistic studies. REACT CHEM ENG 2021. [DOI: 10.1039/d0re00373e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, a novel Fe(ii) porphyrin conjugated amino modified HMS catalyst was synthesized and characterized by BET, XRD, TEM, SEM, and UV-vis techniques.
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Affiliation(s)
- Fang Wang
- College of Chemical Engineering
- State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Ke Xiao
- College of Chemical Engineering
- State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Lin Shi
- College of Chemical Engineering
- State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Liancheng Bing
- College of Chemical Engineering
- State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Dezhi Han
- College of Chemical Engineering
- State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Guangjian Wang
- College of Chemical Engineering
- State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
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Mazoir N, Benharref A, Vaca L, Reina M, González-Coloma A. Optimization of Insecticidal Triterpene Derivatives by Biomimetic Oxidations with Hydrogen Peroxide and Iodosobenzene Catalyzed by Mn III and Fe III Porphyrin Complexes. Chem Biodivers 2020; 17:e2000287. [PMID: 32644248 DOI: 10.1002/cbdv.202000287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Indexed: 02/06/2023]
Abstract
Semisynthetic functionalized triterpenes (4α,14-dimethyl-5α,8α-8,9-epoxycholestan-3β-yl acetate; 4α,14-dimethyl-5α-cholest-8-ene-3,7,11-trione; 4α,14-dimethyl-5α-cholesta-7,9(11)-dien-3-one and 4α,14-dimethyl-5α-cholest-8-en-3β-yl acetate), previously prepared from 31-norlanostenol, a natural insecticide isolated from the latex of Euphorbia officinarum, have been subjected to oxidation with hydrogen peroxide (H2 O2 ) and iodosobenzene (PhIO) catalyzed by porphyrin complexes (cytochrome P-450 models) in order to obtain optimized derivatives with high regioselectivity. The main transformations were epoxidation of the double bonds and hydroxylations of non-activated C-H groups and the reaction products were 25-hydroxy-4α,14-dimethyl-5α-cholesta-7,9(11)-dien-3β-yl acetate (59 %), 25-hydroxy-4α,14-dimethyl-5α-cholest-8-ene-3,7,11-trione (60 %), 4α,14-dimethyl-5α,7β-7,8-epoxycholest-9(11)-en-3-one (22 %), 8-hydroxy-4α,14-dimethyl-5α-cholest-9(11)-ene-3,7-dione (16 %), 12α-hydroxy-4α,14-dimethyl-5α,7β-7,8-epoxycholest-9(11)-en-3-one (16 %), and 4α,14-dimethyl-5α,8α-8,9-epoxycholestan-3β-yl acetate (26 %), respectively. We also investigated the insect (Myzus persicae, Rhopalosiphum padi and Spodoptera littoralis) antifeedant and postingestive effects of these terpenoid derivatives. None of the compounds tested had significant antifeedant effects, however, all were more effective postingestive toxicants on S. littoralis larvae than the natural compound 31-norlanostenol, with 4α,14-dimethyl-5α,8α-8,9-epoxycholestan-3β-yl acetate being the most active. The study of their structure-activity relationships points out at the importance of C3 and C7 substituents.
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Affiliation(s)
- Noureddine Mazoir
- Laboratory of Plant Biotechnology and Ecosystem Valorization, Faculty of Sciences, Chouaib Doukkali University, Research Unit: Natural Resource Valorizations, P.O. Box 20, 24000, El Jadida, Morocco
| | - Ahmed Benharref
- Laboratory of Biomolecular Chemistry, Natural Substances and Reactivity, URAC 16, Faculty of Sciences Semlalia, Cadi Ayyad University, P.O. Box 2390, 40000, Marrakech, Morocco
| | - Laura Vaca
- Instituto de Ciencias Agrarias, CSIC, Serrano 115-dpdo, 28006, Madrid, Spain
| | - Matías Reina
- Laboratory of Plant Biotechnology and Ecosystem Valorization, Faculty of Sciences, Chouaib Doukkali University, Research Unit: Natural Resource Valorizations, P.O. Box 20, 24000, El Jadida, Morocco
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Phan HVT, Duong TH, Pham DD, Pham HA, Nguyen VK, Nguyen TP, Nguyen HH, Nguyen NH, Sam-ang P, Phontree K, Sichaem J. Design and synthesis of new lupeol derivatives and their α-glucosidase inhibitory and cytotoxic activities. Nat Prod Res 2020; 36:1-7. [DOI: 10.1080/14786419.2020.1758095] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | - Thuc-Huy Duong
- Faculty of Chemistry, University of Education, Ho Chi Minh City, Vietnam
| | - Duc-Dung Pham
- Faculty of Chemistry, University of Education, Ho Chi Minh City, Vietnam
| | - Hoang-Anh Pham
- Faculty of Chemistry, University of Education, Ho Chi Minh City, Vietnam
| | - Van-Kieu Nguyen
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Da Nang, Vietnam
| | - Thi-Phuong Nguyen
- Faculty of Biotechnology, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
| | - Huu-Hung Nguyen
- Faculty of Environment and Biotechnology, Van Lang University, Ho Chi Minh City, Vietnam
| | - Ngoc-Hong Nguyen
- CirTech Institute, Ho Chi Minh City University of Technology (HUTECH), Ho Chi Minh City, Vietnam
| | - Pornpat Sam-ang
- Faculty of Science and Technology, Pibulsongkram Rajabhat University, Phitsanulok, Thailand
| | - Kiettipum Phontree
- Division of Pharmacognosy and Toxicology, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Jirapast Sichaem
- Faculty of Science and Technology, Thammasat University Lampang Campus, Lampang, Thailand
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Almeida Lage AL, Ribeiro JM, de Souza-Fagundes EM, Brugnera MF, Martins DCDS. Efficient atrazine degradation catalyzed by manganese porphyrins: Determination of atrazine degradation products and their toxicity evaluation by human blood cells test models. JOURNAL OF HAZARDOUS MATERIALS 2019; 378:120748. [PMID: 31226586 DOI: 10.1016/j.jhazmat.2019.120748] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 04/16/2019] [Accepted: 06/06/2019] [Indexed: 06/09/2023]
Abstract
Atrazine (ATZ) is an herbicide that has been considered an environmental pollutant worldwide. ATZ contaminates groundwaters and can persist in soils for up to a year causing several environmental and health problems. This study aimed to investigate ATZ degradation catalyzed by manganese porphyrins as biomimetic cytochrome P450 models. We used PhIO, PhI(OAc)2, H2O2, t-BuOOH, m-CPBA, or Oxone® as oxidant under mild conditions and evaluated a range of manganese porphyrins as catalyst. Concerning oxidant, iodosylbenzene provided the best result-ATZ degradation catalyzed by one of the studied manganese porphyrins in acetonitrile was as high as 47%. We studied the same catalyst/oxidant systems in natural water from a Brazilian river as solvent and obtained up to 100% ATZ degradation when iodobenzene diacetate was the oxidant, regardless of the manganese porphyrin. Besides the already known ATZ degradation products, we also identified unexpected degradation compounds (ring-opening products). Toxicity tests showed that the latter products were capable of proliferate blood cells because they did not show toxicity under the evaluated conditions.
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Affiliation(s)
- Ana Luísa Almeida Lage
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, MG, Brazil
| | - Juliana Martins Ribeiro
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, MG, Brazil
| | - Elaine Maria de Souza-Fagundes
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, MG, Brazil
| | - Michelle Fernanda Brugnera
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Mato Grosso, 78060-900, Cuiabá, MT, Brazil
| | - Dayse Carvalho da Silva Martins
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, MG, Brazil.
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8
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Meireles AM, Almeida Lage AL, Ribeiro JM, Silva MAND, Souza-Fagundes EMD, Martins DCDS. Synthetic Mn(III) porphyrins as biomimetic catalysts of CYP450: Degradation of antibiotic norfloxacin in aqueous medium. ENVIRONMENTAL RESEARCH 2019; 177:108615. [PMID: 31400562 DOI: 10.1016/j.envres.2019.108615] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 07/25/2019] [Accepted: 07/26/2019] [Indexed: 06/10/2023]
Abstract
Norfloxacin (NOR) is a synthetic broad-spectrum fluoroquinolone antibiotic classified as an emerging contaminant. Here, we investigate Mn(III) porphyrin-catalyzed NOR degradation using peroxides or peracids (H2O2, t-BuOOH, or Oxone®) as oxidants. We evaluate three Mn(III) porphyrins: the 1st-generation tetraphenylporphyrin and 2nd -generation porphyrins bearing halogen atoms at the ortho-positions of the porphyrin macrocycle meso-aryl groups. Experiments were carried out in aqueous medium under mild conditions. NOR degradation was 67%. Products were proposed by mass spectrometry (MS) analysis. Oxone® was the best oxidant for NOR degradation despite its possible decomposition in the reaction medium. The second-generation Mn(III) porphyrins were more resistant than the first-generation Mn(III) porphyrin, indicating that the bulky groups introduced into the porphyrin macrocycle meso-aryl groups led to more robust catalysts. The degradation products did not present cytotoxic behavior under the employed conditions. In conclusion, Mn(III) porphyrin-catalyzed NOR degradation is a promising strategy to degrade fluoroquinolones and other pollutants.
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Affiliation(s)
- Alexandre Moreira Meireles
- Departamento de Química (DQ), Instituto de Ciências Exatas (ICEx), Universidade Federal de Minas Gerais (UFMG), 31270-901, Belo Horizonte, MG, Brazil
| | - Ana Luísa Almeida Lage
- Departamento de Química (DQ), Instituto de Ciências Exatas (ICEx), Universidade Federal de Minas Gerais (UFMG), 31270-901, Belo Horizonte, MG, Brazil
| | - Juliana Martins Ribeiro
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), 31270-901, Belo Horizonte, MG, Brazil
| | - Mirra Angelina Neres da Silva
- Departamento de Química (DQ), Instituto de Ciências Exatas (ICEx), Universidade Federal de Minas Gerais (UFMG), 31270-901, Belo Horizonte, MG, Brazil
| | - Elaine Maria de Souza-Fagundes
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas (ICB), Universidade Federal de Minas Gerais (UFMG), 31270-901, Belo Horizonte, MG, Brazil
| | - Dayse Carvalho da Silva Martins
- Departamento de Química (DQ), Instituto de Ciências Exatas (ICEx), Universidade Federal de Minas Gerais (UFMG), 31270-901, Belo Horizonte, MG, Brazil.
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Milani JLS, Meireles AM, Bezerra WA, Martins DCS, Cangussu D, das Chagas RP. Mn
III
Porphyrins: Catalytic Coupling of Epoxides with CO
2
under Mild Conditions and Mechanistic Considerations. ChemCatChem 2019. [DOI: 10.1002/cctc.201900745] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Jorge L. S. Milani
- Departmento de Química-Instituto de Ciências ExatasUniversidade Federal de Juiz de Fora Juiz de Fora-MG Brazil
| | - Alexandre M. Meireles
- Departmento de Química-Instituto de Ciências ExatasUniversidade Federal de Minas Gerais Belo Horizonte-Mg Brazil
| | | | - Dayse. C. S. Martins
- Departmento de Química-Instituto de Ciências ExatasUniversidade Federal de Minas Gerais Belo Horizonte-Mg Brazil
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Malinowska M, Miroslaw B, Sikora E, Ogonowski J, Wojtkiewicz AM, Szaleniec M, Pasikowska-Piwko M, Eris I. New lupeol esters as active substances in the treatment of skin damage. PLoS One 2019; 14:e0214216. [PMID: 30921370 PMCID: PMC6438679 DOI: 10.1371/journal.pone.0214216] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 03/09/2019] [Indexed: 01/11/2023] Open
Abstract
The purpose of the research was to obtain new derivatives of natural triterpene lupeol and to evaluate their potential as active substances in the treatment of skin damage. Four new lupeol esters (propionate, succinate, isonicotinate and acetylsalicylate) and lupeol acetate were obtained using an eco-friendly synthesis method. In the esterification process, the commonly used hazardous reagents in this type of synthesis were replaced by safe ones. This unconventional, eco-friendly, method is particularly important because the compounds obtained are potentially active substances in skin care formulations. Even trace amounts of hazardous reagents can have a toxic effect on damaged or irritated tissues. The molecular structure of the esters were confirmed by 1H NMR, 13C NMR and IR spectroscopy methods. Their crystal structures were determined using XRD method. To complete the analysis of their characteristics, physicochemical properties (melting point, lipophilicity, water solubility) and biological activity of the lupeol derivatives were studied. Results of an irritant potential test, carried out on Reconstructed Human Epidermis (RHE), confirmed that the synthesized lupeol derivatives are not cytotoxic and they stimulate a process of human cell proliferation. The safety of use for tested compounds was determined in a cell viability test (cytotoxicity detection kit based on the measurement of lactate dehydrogenase activity) for keratinocytes and fibroblasts. The results obtained showed that the modification of lupeol structure improve its bioavailability and activity. All of the esters penetrate the stratum corneum and the upper layers of the dermis better than the maternal lupeol. Lupeol isonicotinate, acetate and propionate were the most effective compounds in a stimulation of the human skin cell proliferation process. This combination resulted in an increase in the concentration of cells of more than 30% in comparison to control samples. The results indicate that the chemical modification of lupeol allows to obtain promising active substances for treatment of skin damage, including thermal, chemical and radiation burns.
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Affiliation(s)
- Magdalena Malinowska
- Institute of Organic Chemistry and Technology, Cracow University of Technology, Cracow, Poland
- * E-mail:
| | - Barbara Miroslaw
- Department of Crystallography, Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland
| | - Elzbieta Sikora
- Institute of Organic Chemistry and Technology, Cracow University of Technology, Cracow, Poland
| | - Jan Ogonowski
- Institute of Organic Chemistry and Technology, Cracow University of Technology, Cracow, Poland
| | - Agnieszka M. Wojtkiewicz
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Cracow, Poland
| | - Maciej Szaleniec
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Cracow, Poland
| | | | - Irena Eris
- Dr Irena Eris Centre for Science and Research, Piaseczno, Poland
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Meireles AM, da Silva VS, Rebouças JS, da Silva Martins DC. Unexpected Products of Benzylamine Oxidation Catalyzed by Manganese Porphyrins: Some Factors that Play a Critical Role for Imine Formation. ChemistrySelect 2019. [DOI: 10.1002/slct.201803128] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Alexandre Moreira Meireles
- Departamento de Química – Instituto de Ciências ExatasUniversidade Federal de Minas Gerais Belo Horizonte - MG, 31270–901 Brazil
| | - Vinícius Santos da Silva
- Centro de Formação de ProfessoresUniversidade Federal do Recôncavo da Bahia Amargosa – BA, 45300–000 Brazil
| | - Júlio Santos Rebouças
- Departamento de QuímicaUniversidade Federal da Paraíba – Campus I João Pessoa – PB, 58059–900 Brazil
| | - Dayse Carvalho da Silva Martins
- Departamento de Química – Instituto de Ciências ExatasUniversidade Federal de Minas Gerais Belo Horizonte - MG, 31270–901 Brazil
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12
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Milani JLS, Meireles AM, Cabral BN, de Almeida Bezerra W, Martins FT, da Silva Martins DC, das Chagas RP. Highly active Mn(III) meso-tetrakis(2,3-dichlorophenyl)porphyrin catalysts for the cycloaddition of CO2 with epoxides. J CO2 UTIL 2019. [DOI: 10.1016/j.jcou.2018.12.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Ovchenkova EN, Klyueva ME, Lomova TN. Pyridine coordination to manganese(III) porphyrins: The effect of multiple functional substitution in porphyrin. RUSS J INORG CHEM+ 2017. [DOI: 10.1134/s0036023617110134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Xu SH, Wang WW, Zhang C, Liu XF, Yu BY, Zhang J. Site-selective oxidation of unactivated C–H sp 3 bonds of oleanane triterpenes by Streptomyces griseus ATCC 13273. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.04.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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