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Kossack R, Breinlinger S, Nguyen T, Moschny J, Straetener J, Berscheid A, Brötz-Oesterhelt H, Enke H, Schirmeister T, Niedermeyer THJ. Nostotrebin 6 Related Cyclopentenediones and δ-Lactones with Broad Activity Spectrum Isolated from the Cultivation Medium of the Cyanobacterium Nostoc sp. CBT1153. JOURNAL OF NATURAL PRODUCTS 2020; 83:392-400. [PMID: 31977209 DOI: 10.1021/acs.jnatprod.9b00885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cyanobacteria are an interesting source of biologically active natural products, especially chemically diverse and potent protease inhibitors. On our search for inhibitors of the trypanosomal cysteine protease rhodesain, we identified the homodimeric cyclopentenedione (CPD) nostotrebin 6 (1) and new related monomeric, dimeric, and higher oligomeric compounds as the active substances in the medium extract of Nostoc sp. CBT1153. The oligomeric compounds are composed of two core monomeric structures, a trisubstituted CPD or a trisubstituted unsaturated δ-lactone. Nostotrebin 6 thus far has been the only known cyanobacterial CPD. It has been found to be active in a broad variety of assays, indicating that it might be a pan-assay interference compound (PAIN). Thus, we compared the antibacterial and cytotoxic activities as well as the rhodesain inhibition of selected compounds. Because a compound with a δ-lactone instead of a CPD core structure was equally active as nostotrebin 6, the bioactivities of these compounds seem to be based on the phenolic substructures rather than the CPD moiety. While the dimers were roughly equally potent, the monomer displayed slightly weaker activity, suggesting that the compounds show unspecific activity depending upon the number of free phenolic hydroxy groups per molecule.
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Affiliation(s)
- Ronja Kossack
- Department of Pharmaceutical Biology/Pharmacognosy, Institute of Pharmacy , University of Halle-Wittenberg , 06120 Halle (Saale) , Germany
| | - Steffen Breinlinger
- Department of Pharmaceutical Biology/Pharmacognosy, Institute of Pharmacy , University of Halle-Wittenberg , 06120 Halle (Saale) , Germany
| | - Trang Nguyen
- Department of Microbiology/Biotechnology, Interfaculty Institute for Microbiology and Infection Medicine (IMIT) , University of Tübingen , 72076 Tübingen , Germany
| | - Julia Moschny
- Department of Pharmaceutical Biology/Pharmacognosy, Institute of Pharmacy , University of Halle-Wittenberg , 06120 Halle (Saale) , Germany
| | - Jan Straetener
- Department of Microbial Bioactive Compounds, Interfaculty Institute for Microbiology and Infection Medicine (IMIT) , University of Tübingen , 72076 Tübingen , Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen , 72076 Tübingen , Germany
| | - Anne Berscheid
- Department of Microbial Bioactive Compounds, Interfaculty Institute for Microbiology and Infection Medicine (IMIT) , University of Tübingen , 72076 Tübingen , Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen , 72076 Tübingen , Germany
| | - Heike Brötz-Oesterhelt
- Department of Microbial Bioactive Compounds, Interfaculty Institute for Microbiology and Infection Medicine (IMIT) , University of Tübingen , 72076 Tübingen , Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen , 72076 Tübingen , Germany
| | - Heike Enke
- Cyano Biotech GmbH , 12489 Berlin , Germany
| | - Tanja Schirmeister
- Institute of Pharmacy and Biochemistry , University of Mainz , 55128 Mainz , Germany
| | - Timo H J Niedermeyer
- Department of Pharmaceutical Biology/Pharmacognosy, Institute of Pharmacy , University of Halle-Wittenberg , 06120 Halle (Saale) , Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen , 72076 Tübingen , Germany
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Egorov VA, Khasanova LS, Gimalova FA, Miftakhov MS. New Differently Functionalized Cyclopentenediones. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1070428019120091] [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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Kulkarni P, Gawade S. Potassium Carbonate Assisted Synthesis Of α, β, γ, δ-Unsaturated Ketones. FRENCH-UKRAINIAN JOURNAL OF CHEMISTRY 2020. [DOI: 10.17721/fujcv8i2p17-25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The Cinnamylideneacetophenones derivative is shows important medicinal properties and intermediate in organic synthesis. Several substituted α, β, γ, δ-Unsaturated Ketones were prepared in high yield and purity by direct reaction of substituted cinnamaldehyde and ketones in the presence of potassium carbonate as a base in ethanol at 50ºC. The merit of the method is short reaction times, high yield, easy work-up and purification process, inexpensive and easily available catalyst.
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Affiliation(s)
- Pramod Kulkarni
- Post graduate center in Organic Chemistry and Department of Chemistry Hutatma Rajguru Mahavidyalaya
| | - Sammer Gawade
- Post graduate center in Organic Chemistry and Department of Chemistry Hutatma Rajguru Mahavidyalaya
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Riveira MJ, Martiren NL, Mischne MP. Domino Self-Sensitized Photooxygenation of Conjugated Dienones for the Synthesis of 1,2,4-Trioxanes. J Org Chem 2019; 84:3671-3677. [PMID: 30807156 DOI: 10.1021/acs.joc.8b03279] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The photochemical behavior of several dienones was studied under aerobic conditions. 2-Allylidene-1,3-cycloalkanediones prepared via Knoevenagel-type condensation between simple readily available 1,3-dicarbonyl substrates and α,β-unsaturated aldehydes afforded 1,2,4-trioxane derivatives upon UVA irradiation in the presence of oxygen. This domino self-sensitized photooxygenation cascade of conjugated carbonyl systems proceeds stereoselectively and involves the formation of two new oxa-cycles, three new bonds (two C-O), and three stereocenters.
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Affiliation(s)
- Martín J Riveira
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas , Universidad Nacional de Rosario-CONICET , Suipacha 531 , S2002LRK Rosario , Argentina
| | - Nadia L Martiren
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas , Universidad Nacional de Rosario-CONICET , Suipacha 531 , S2002LRK Rosario , Argentina
| | - Mirta P Mischne
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas , Universidad Nacional de Rosario-CONICET , Suipacha 531 , S2002LRK Rosario , Argentina
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Papouskova B, Bernard M, Ottenschlager J, Karban J, Velisek P, Hrbac J, Sykora J, Storch J, Vacek J. A comprehensive LC/MS analysis of novel cyclopentenedione library. J Pharm Biomed Anal 2016; 128:342-351. [PMID: 27328361 DOI: 10.1016/j.jpba.2016.05.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/30/2016] [Accepted: 05/31/2016] [Indexed: 01/28/2023]
Abstract
Cyclopentenediones (CPDs) are compounds with a variety of applications ranging from the preparation of functional polymers to the development of antimicrobial agents, suggesting the potential use of CPDs as novel bioactive compounds or drugs. For this reason, a detailed characterization of CPDs and the development of robust analytical methods for their trace analysis are being sought. Here we focused on the design and synthesis of a library of novelized benzylidene CPD derivatives that were consequently characterized by ultra-high performance liquid chromatography (UHPLC) on-line connected with tandem mass spectrometry (MS/MS). The library design was based on a 2-benzylidene-4-cyclopentene-1,3-dione skeleton substituted with a variety of hydroxy, methoxy, halogen, linear aliphatic, heterocyclic and saccharide moieties, primarily modulating the skeleton's hydrophobicity. The prepared CPDs were effectively ionized by positive/negative atmospheric pressure photoionization (APPI) and atmospheric pressure chemical ionization (APCI). After careful optimization of the dopant composition and flow rate, positive-mode APPI proved to be more sensitive than APCI. In negative mode, both ionization techniques gave similar results. Further, a detailed MS fragmentation study was performed, confirming the structure of the compounds and enabling positional isomers of CPDs to be differentiated on the basis of their collision spectra analysis. Finally, an optimization of the composition of the mobile phase and reversed-phased separation mode were done, followed by a selection of the most suitable UHPLC stationary phases, i.e. C18, C8 and phenyl. The applicability of the method was evaluated by the inclusion of the other two substances in the study, i.e. monomeric and dimeric bioactive CPDs, compound TX-1123 and nostotrebin 6 with cytostatic and antimicrobial activities, respectively. The results presented here could be used in further investigations of the chromatographic retention and MS behavior of CPDs, which could be utilized for their isolation, detailed characterization and analysis in biological systems.
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Affiliation(s)
- Barbora Papouskova
- Department of Analytical Chemistry, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacky University, 17 listopadu 12, Olomouc 771 46, Czech Republic
| | - Martin Bernard
- Institute of Chemical Process Fundamentals of the AS CR, v.v.i., Rozvojova 135/1, Praha 165 02, Czech Republic
| | - Jakub Ottenschlager
- Institute of Chemical Process Fundamentals of the AS CR, v.v.i., Rozvojova 135/1, Praha 165 02, Czech Republic
| | - Jindrich Karban
- Institute of Chemical Process Fundamentals of the AS CR, v.v.i., Rozvojova 135/1, Praha 165 02, Czech Republic
| | - Petr Velisek
- Institute of Chemical Process Fundamentals of the AS CR, v.v.i., Rozvojova 135/1, Praha 165 02, Czech Republic
| | - Jan Hrbac
- Department of Analytical Chemistry, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacky University, 17 listopadu 12, Olomouc 771 46, Czech Republic
| | - Jan Sykora
- Institute of Chemical Process Fundamentals of the AS CR, v.v.i., Rozvojova 135/1, Praha 165 02, Czech Republic
| | - Jan Storch
- Institute of Chemical Process Fundamentals of the AS CR, v.v.i., Rozvojova 135/1, Praha 165 02, Czech Republic
| | - Jan Vacek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 3, Olomouc 775 15, Czech Republic.
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Cheel J, Bogdanová K, Ignatova S, Garrard I, Hewitson P, Kolář M, Kopecký J, Hrouzek P, Vacek J. Dimeric cyanobacterial cyclopent-4-ene-1,3-dione as selective inhibitor of Gram-positive bacteria growth: Bio-production approach and preparative isolation by HPCCC. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.06.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Riveira MJ, Mischne MP. An Interrupted Vinylogous Iso-Nazarov Reaction: Cycloisomerization of Conjugated Trienones to Cyclopenta[b]furan Derivatives. J Org Chem 2014; 79:8244-54. [DOI: 10.1021/jo501453b] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Martín J. Riveira
- Instituto
de Química
Rosario-CONICET, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, 2000 Rosario, Santa Fe, Argentina
| | - Mirta P. Mischne
- Instituto
de Química
Rosario-CONICET, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, 2000 Rosario, Santa Fe, Argentina
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