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Stakanovs G, Blazevica A, Belyakov S, Rasina D, Jirgensons A. Semisynthesis of Linariophyllenes A-C and Rumphellolide H, Structure Revisions and Proposed Biosynthesis Pathways. JOURNAL OF NATURAL PRODUCTS 2023; 86:2368-2378. [PMID: 37779357 DOI: 10.1021/acs.jnatprod.3c00574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
The first semisynthetic routes toward terrestrial anti-inflammatory natural products linariophyllene A-C and the refined route toward marine natural product rumphellolide H are presented. Among the synthesized target compounds, the correct structure of linariophyllene A was determined to be the diastereomer of the originally proposed structure with an inverted stereocenter at the secondary alcohol. The proposed structures of linariophyllene B and rumphellolide H were confirmed. However, the correct structure of linariophyllene C was found to be the diastereomer of the originally proposed structure with an inverted stereocenter at the tertiary carbon of the epoxide moiety. The structures of linariophyllenes A-C and rumphellolide H were unequivocally confirmed by single-crystal X-ray diffractometry. The obtained results enabled the proposal of the biosynthetic origins of the aforementioned natural products and bolstered the diversity of available sesquiterpenoids. Linariophyllenes A-C and rumphellolide H were obtained in sufficient amounts to further expand their bioactivity profile and utility as reference standards in future studies of chemical constituents of terrestrial and marine organisms.
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Affiliation(s)
- Georgijs Stakanovs
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | | | - Sergey Belyakov
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Dace Rasina
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Aigars Jirgensons
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
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Xu L, Qin Y, Song Y, Tang A, Liu Y. Glutaraldehyde-crosslinked Rhizopus oryzae whole cells show improved catalytic performance in alkene epoxidation. Microb Cell Fact 2023; 22:33. [PMID: 36814268 PMCID: PMC9948446 DOI: 10.1186/s12934-023-02026-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/20/2023] [Indexed: 02/24/2023] Open
Abstract
BACKGROUND Existing methods for alkene epoxidation are based on lipase-catalysed perhydrolysis. However, the inactivation of the expensive lipase enzyme is problematic for enzymatic epoxidation at large scales due to the use of hydrogen peroxide and peracids at high concentrations in the reaction. The immobilisation of whole cells appears to be a promising approach to alleviate this problem. RESULTS A green oxidation system containing hydrogen peroxide, Na3C6H5O7, an acyl donor, and glutaraldehyde (GA)-crosslinked cells of Rhizopus oryzae was developed for the epoxidation of alkenes. GA-crosslinked cells of Rhizopus oryzae were adopted as a biocatalyst into the epoxidation system. A variety of alkenes were oxidised with this system, with a 56-95% analytical yield of the corresponding epoxides. The catalytic performance of the crosslinked treated cells was substantially improved compared to that of the untreated cells and the initial reaction rate increased from 126.71 to 234.72 mmol/L/h, retaining 83% yields even after four batches of reactions. The addition of 3.5 mmol Na3C6H5O7 not only acts as an acid-trapping reagent to eliminate the negative effect of the carboxylic acid on the alkene oxide but also forms a saturated salt solution with the aqueous phase, affecting the concentration of H2O2 in the three phases and thus the epoxidation reaction. Organic solvents with a logP value > 0.68 were good at producing hydroxy peracids; however, this method is only suitable for oxidation in a two-liquid phase. CONCLUSIONS Compared with other lipase biocatalysts, the GA-crosslinked whole-cell biocatalyst is inexpensive, readily available, and highly stable. Therefore, it can be considered promising for industrial applications.
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Affiliation(s)
- Lili Xu
- Medical College, Guangxi University, Nanning, 530004, China
- College of Marine Sciences, Beibu Gulf University, Qinzhou, 535011, China
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Yimin Qin
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Yufeng Song
- College of Marine Sciences, Beibu Gulf University, Qinzhou, 535011, China
| | - Aixing Tang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
- Key Laboratory of Guangxi Biorefinery, Guangxi University, Nanning, 530004, China
| | - Youyan Liu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China.
- Key Laboratory of Guangxi Biorefinery, Guangxi University, Nanning, 530004, China.
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Li S, Mao W, Zhang L, Huang H, Xiao Y, Mao L, Tan R, Fu Z, Yu N, Yin D. Ionic liquid-modulated aerobic oxidation of isoeugenol and β-caryophyllene via nanoscale Cu-MOFs under mild conditions. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Recent advance of chemoenzymatic catalysis for the synthesis of chemicals: Scope and challenge. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.12.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Li S, Shi L, Zhang L, Huang H, Xiao Y, Mao L, Tan R, Fu Z, Yu N, Yin D. Ionic liquid-mediated catalytic oxidation of β-caryophyllene by ultrathin 2D metal-organic framework nanosheets under 1 atm O2. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111196] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Pascoal DRC, Velozo ES, Braga MEM, Sousa HC, Cabral-Albuquerque ECM, Vieira de Melo SAB. Bioactive compounds of Copaifera sp. impregnated into three-dimensional gelatin dressings. Drug Deliv Transl Res 2020; 10:1537-1551. [PMID: 32557352 DOI: 10.1007/s13346-020-00797-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
This study investigates the immersion impregnation process of the copaiba oleoresin and leaf extract into SpongostanTM gelatin dressings to be used in wound healing treatment. Copaiba oleoresin and leaf extract were characterized by spectroscopic analyses in order to confirm the identity of bioactive compounds and their compatibility with dressing material. Their antibacterial properties were evaluated and oleoresin activity against Escherichia coli and Staphylococcus aureus bacteria was confirmed while the leaf extract showed activity against S. aureus. Solubility assays in organic solvents revealed that copaiba oleoresin is miscible into dichloromethane, while leaf extract showed a 20 g/ml solubility coefficient at 35 °C in the same solvent. These miscibility and solubility conditions were selected for the impregnation process. Using the organic solvent immersion method, 11 mg of copaiba oleoresin and 19 mg of leaf extract were impregnated into 1 cm3 of 3D matrix. The main bioactives from copaiba products, such as β-caryophyllene and lupeol, were tracked in the gelatin dressing. DSC and TGA assays showed no thermal changes in the samples after impregnation. Furthermore, the spatial organization of foam structure of the dressings was preserved after superficial distribution of oleoresin, as well as amorphous-like particulate deposition of leaf extract. The main compound of copaiba oleoresin, β-caryophyllene, which exhibits well-known anti-inflammatory activities, and the main compound of copaiba leaf extract, lupeol, also an anti-inflammatory agent, were successfully impregnated using organic solvent in wound dressings and are promising for further application on tissue wound healing. Graphical Abstract.
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Affiliation(s)
- Diego R C Pascoal
- Programa de Engenharia Industrial, Escola Politécnica, Universidade Federal da Bahia, Rua Aristides Novis, 2, 6° andar, Federação, Salvador, Bahia, 40210-630, Brazil
| | - Eudes S Velozo
- Departamento de Farmácia, Universidade Federal da Bahia, Rua Barão de Jeremoabo, s/n, Ondina, Salvador, Bahia, 40170-115, Brazil
| | - Mara E M Braga
- CIEPQPF, Department of Chemical Engineering, Universidade de Coimbra, Rua Sílvio Lima, Pólo II-Pinhal de Marrocos, 3030-790, Coimbra, Portugal
| | - Herminio C Sousa
- CIEPQPF, Department of Chemical Engineering, Universidade de Coimbra, Rua Sílvio Lima, Pólo II-Pinhal de Marrocos, 3030-790, Coimbra, Portugal
| | - Elaine C M Cabral-Albuquerque
- Programa de Engenharia Industrial, Escola Politécnica, Universidade Federal da Bahia, Rua Aristides Novis, 2, 6° andar, Federação, Salvador, Bahia, 40210-630, Brazil
| | - Silvio A B Vieira de Melo
- Programa de Engenharia Industrial, Escola Politécnica, Universidade Federal da Bahia, Rua Aristides Novis, 2, 6° andar, Federação, Salvador, Bahia, 40210-630, Brazil. .,Centro Interdisciplinar em Energia e Ambiente, Campus Universitário da Federação/Ondina, Universidade Federal da Bahia, Salvador, Bahia, 40170-115, Brazil.
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Mashhadi F, Habibi A, Varmira K. Determination of Activation Energy and Ping-Pong Kinetic Model Constants of Enzyme-Catalyzed Self-Epoxidation of Free Fatty Acids using Micro-reactor. Catal Letters 2018. [DOI: 10.1007/s10562-018-2503-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Mittersteiner M, Linshalm BL, Vieira APF, Brondani PB, Scharf DR, de Jesus PC. Convenient enzymatic resolution of (R,S)-2-methylbutyric acid catalyzed by immobilized lipases. Chirality 2017; 30:106-111. [DOI: 10.1002/chir.22779] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 08/29/2017] [Accepted: 10/01/2017] [Indexed: 11/05/2022]
Affiliation(s)
| | | | | | - Patrícia Bulegon Brondani
- Departmento de Ciências Exatas e Educação; Universidade Federal de Santa Catarina; Blumenau SC Brazil
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Biocatalysis and biotransformation in Brazil: An overview. Biotechnol Adv 2015; 33:481-510. [PMID: 25687277 DOI: 10.1016/j.biotechadv.2015.02.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 02/05/2015] [Accepted: 02/05/2015] [Indexed: 12/12/2022]
Abstract
This review presents the recent research in biocatalysis and biotransformation in Brazil. Several substrates were biotransformed by fungi, bacteria and plants. Biocatalytic deracemization of secondary alcohols, oxidation of sulfides, sp(3) CH hydroxylation and epoxidation of alkenes were described. Chemo-enzymatic resolution of racemic alcohols and amines were carried out with lipases using several substrates containing heteroatoms such as silicon, boron, selenium and tellurium. Biotransformation of nitriles by marine fungi, hydrolysis of epoxides by microorganisms of Brazilian origin and biooxidation of natural products were described. Enzymatic reactions under microwave irradiation, continuous flow, and enzymatic assays using fluorescent probes were reported.
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The use of organic solvents/ionic liquids mixtures in reactions catalyzed by lipase from Burkholderia cepacia immobilized in different supports. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcatb.2014.11.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Chemoenzymatic epoxidation of alkenes and reusability study of the phenylacetic acid. ScientificWorldJournal 2014; 2014:756418. [PMID: 24587751 PMCID: PMC3921943 DOI: 10.1155/2014/756418] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Accepted: 10/24/2013] [Indexed: 11/17/2022] Open
Abstract
Here, we focused on a simple enzymatic epoxidation of alkenes using lipase and phenylacetic acid. The immobilised Candida antarctica lipase B, Novozym 435 was used to catalyse the formation of peroxy acid instantly from hydrogen peroxide (H2O2) and phenylacetic acid. The peroxy phenylacetic acid generated was then utilised directly for in situ oxidation of alkenes. A variety of alkenes were oxidised with this system, resulting in 75–99% yield of the respective epoxides. On the other hand, the phenylacetic acid was recovered from the reaction media and reused for more epoxidation. Interestingly, the waste phenylacetic acid had the ability to be reused for epoxidation of the 1-nonene to 1-nonene oxide, giving an excellent yield of 90%.
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