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Satyanarayana MV, Mehta B, Prasad KRS, Rao MVB. 1-Butyl-3-methylimidazolium Tetrafluoroborate ([BMIM]BF4): An Efficient Ionic Liquid Medium for the Synthesis of Novel 2-(Oxazolo[5,4-b]pyridin-2-yl)-N-phenylbenzamides. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021020147] [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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Kusy D, Wojciechowska A, Małolepsza J, Błażewska KM. Functionalization of the imidazo[1,2- a]pyridine ring in α-phosphonoacrylates and α-phosphonopropionates via microwave-assisted Mizoroki-Heck reaction. Beilstein J Org Chem 2020; 16:15-21. [PMID: 31976012 PMCID: PMC6964661 DOI: 10.3762/bjoc.16.3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 12/13/2019] [Indexed: 01/07/2023] Open
Abstract
A series of new phosphonocarboxylates containing an imidazo[1,2-a]pyridine ring has been synthesized via the microwave-assisted Mizoroki–Heck reaction. The efficient modification of the imidazo[1,2-a]pyridine ring has been achieved as late-stage functionalization, enabling and accelerating the generation of a library of compounds from a common precursor.
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Affiliation(s)
- Damian Kusy
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, 116 Zeromskiego St, 90-924 Lodz, Poland
| | - Agata Wojciechowska
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, 116 Zeromskiego St, 90-924 Lodz, Poland
| | - Joanna Małolepsza
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, 116 Zeromskiego St, 90-924 Lodz, Poland
| | - Katarzyna M Błażewska
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, 116 Zeromskiego St, 90-924 Lodz, Poland
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Monier M, Abdel-Latif D, El-Mekabaty A, Elattar KM. Recent progress in the chemistry of heterocycles incorporated oxazolo[4,5-b]pyridine and oxazolo[5,4-b]pyridine skeletons. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1686644] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Mohamed Monier
- Chemistry Department, Faculty of Science, Taibah University, Yanbu Al-Bahr, Kingdom of Saudi Arabia
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Doaa Abdel-Latif
- Chemistry Department, Faculty of Science, Taibah University, Yanbu Al-Bahr, Kingdom of Saudi Arabia
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Ahmed El-Mekabaty
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Khaled M. Elattar
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
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Reen GK, Dudhe P, Ahuja M, Kumar A, Sharma P. Acid-Catalyzed, Silica-Supported, One-Pot Benzoylation Route to Synthesize 2-(Substituted Phenyl)oxazolo[4,5-b]pyridines Under Ambient Conditions. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2015.1056797] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Premansh Dudhe
- School of Chemical Sciences, Devi Ahilya University, Indore, India
| | - Monika Ahuja
- School of Chemical Sciences, Devi Ahilya University, Indore, India
| | - Ashok Kumar
- School of Chemical Sciences, Devi Ahilya University, Indore, India
| | - Pratibha Sharma
- School of Chemical Sciences, Devi Ahilya University, Indore, India
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Mohammadi Ziarani G, Shakiba Nahad M, Lashgari N, Badiei A. Facile microwave-assisted synthesis of 2-aryloxazolo[4,5-b]pyridines using SBA-Pr-NH2. JOURNAL OF NANOSTRUCTURE IN CHEMISTRY 2015; 5:39-44. [DOI: 10.1007/s40097-014-0129-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
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Han M, Heppel SC, Su T, Bogs J, Zu Y, An Z, Rausch T. Enzyme inhibitor studies reveal complex control of methyl-D-erythritol 4-phosphate (MEP) pathway enzyme expression in Catharanthus roseus. PLoS One 2013; 8:e62467. [PMID: 23650515 PMCID: PMC3641079 DOI: 10.1371/journal.pone.0062467] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 03/20/2013] [Indexed: 12/27/2022] Open
Abstract
In Catharanthus roseus, the monoterpene moiety exerts a strong flux control for monoterpene indole alkaloid (MIA) formation. Monoterpene synthesis depends on the methyl-D-erythritol 4-phosphate (MEP) pathway. Here, we have explored the regulation of this pathway in response to developmental and environmental cues and in response to specific enzyme inhibitors. For the MEP pathway entry enzyme 1-deoxy-D-xylulose 5-phosphate synthase (DXS), a new (type I) DXS isoform, CrDXS1, has been cloned, which, in contrast to previous reports on type II CrDXS, was not transcriptionally activated by the transcription factor ORCA3. Regulation of the MEP pathway in response to metabolic perturbations has been explored using the enzyme inhibitors clomazone (precursor of 5-ketochlomazone, inhibitor of DXS) and fosmidomycin (inhibitor of deoxyxylulose 5-phosphate reductoisomerase (DXR)), respectively. Young leaves of non-flowering plants were exposed to both inhibitors, adopting a non-invasive in vivo technique. Transcripts and proteins of DXS (3 isoforms), DXR, and hydroxymethylbutenyl diphosphate synthase (HDS) were monitored, and protein stability was followed in isolated chloroplasts. Transcripts for DXS1 were repressed by both inhibitors, whereas transcripts for DXS2A&B, DXR and HDS increased after clomazone treatment but were barely affected by fosmidomycin treatment. DXS protein accumulated in response to both inhibitors, whereas DXR and HDS proteins were less affected. Fosmidomycin-induced accumulation of DXS protein indicated substantial posttranscriptional regulation. Furthermore, fosmidomycin effectively protected DXR against degradation in planta and in isolated chloroplasts. Thus our results suggest that DXR protein stability may be affected by substrate binding. In summary, the present results provide novel insight into the regulation of DXS expression in C. roseus in response to MEP-pathway perturbation.
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Affiliation(s)
- Mei Han
- Centre for Organismal Studies (COS) Heidelberg, Heidelberg University, Heidelberg, Germany
| | - Simon C. Heppel
- Centre for Organismal Studies (COS) Heidelberg, Heidelberg University, Heidelberg, Germany
| | - Tao Su
- Centre for Organismal Studies (COS) Heidelberg, Heidelberg University, Heidelberg, Germany
| | - Jochen Bogs
- Dienstleistungszentrum Ländlicher Raum-Rheinpfalz, Neustadt, Germany
| | - Yuangang Zu
- Northeast Forestry University, Key Laboratory of Forest Plant Ecology, Ministry of Education, Harbin, PR China
| | - Zhigang An
- Northeast Forestry University, Key Laboratory of Forest Plant Ecology, Ministry of Education, Harbin, PR China
| | - Thomas Rausch
- Centre for Organismal Studies (COS) Heidelberg, Heidelberg University, Heidelberg, Germany
- * E-mail:
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Suresh S, Shyamraj D, Larhed M. Synthesis of antimalarial compounds fosmidomycin and FR900098 through N- or P-alkylation reactions. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.11.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hemmerlin A, Harwood JL, Bach TJ. A raison d'être for two distinct pathways in the early steps of plant isoprenoid biosynthesis? Prog Lipid Res 2011; 51:95-148. [PMID: 22197147 DOI: 10.1016/j.plipres.2011.12.001] [Citation(s) in RCA: 208] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Revised: 11/28/2011] [Accepted: 12/05/2011] [Indexed: 12/12/2022]
Abstract
When compared to other organisms, plants are atypical with respect to isoprenoid biosynthesis: they utilize two distinct and separately compartmentalized pathways to build up isoprene units. The co-existence of these pathways in the cytosol and in plastids might permit the synthesis of many vital compounds, being essential for a sessile organism. While substrate exchange across membranes has been shown for a variety of plant species, lack of complementation of strong phenotypes, resulting from inactivation of either the cytosolic pathway (growth and development defects) or the plastidial pathway (pigment bleaching), seems to be surprising at first sight. Hundreds of isoprenoids have been analyzed to determine their biosynthetic origins. It can be concluded that in angiosperms, under standard growth conditions, C₂₀-phytyl moieties, C₃₀-triterpenes and C₄₀-carotenoids are made nearly exclusively within compartmentalized pathways, while mixed origins are widespread for other types of isoprenoid-derived molecules. It seems likely that this coexistence is essential for the interaction of plants with their environment. A major purpose of this review is to summarize such observations, especially within an ecological and functional context and with some emphasis on regulation. This latter aspect still requires more work and present conclusions are preliminary, although some general features seem to exist.
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Affiliation(s)
- Andréa Hemmerlin
- Institut de Biologie Moléculaire des Plantes du Centre National de la Recherche Scientifique, IBMP-CNRS-UPR2357, Université de Strasbourg, 28 Rue Goethe, F-67083 Strasbourg Cedex, France.
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Andaloussi M, Lindh M, Björkelid C, Suresh S, Wieckowska A, Iyer H, Karlén A, Larhed M. Substitution of the phosphonic acid and hydroxamic acid functionalities of the DXR inhibitor FR900098: An attempt to improve the activity against Mycobacterium tuberculosis. Bioorg Med Chem Lett 2011; 21:5403-7. [DOI: 10.1016/j.bmcl.2011.07.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2011] [Revised: 06/30/2011] [Accepted: 07/03/2011] [Indexed: 10/17/2022]
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Biological Activity of Aminophosphonic Acids and Their Short Peptides. TOPICS IN HETEROCYCLIC CHEMISTRY 2009. [DOI: 10.1007/7081_2008_14] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Ershov YV. 2-C-methylerythritol phosphate pathway of isoprenoid biosynthesis as a target in identifying new antibiotics, herbicides, and immunomodulators: A review. APPL BIOCHEM MICRO+ 2007. [DOI: 10.1134/s0003683807020019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Woo YH, Fernandes RPM, Proteau PJ. Evaluation of fosmidomycin analogs as inhibitors of the Synechocystis sp. PCC6803 1-deoxy-d-xylulose 5-phosphate reductoisomerase. Bioorg Med Chem 2006; 14:2375-85. [PMID: 16310360 DOI: 10.1016/j.bmc.2005.11.012] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2005] [Revised: 11/05/2005] [Accepted: 11/08/2005] [Indexed: 11/17/2022]
Abstract
Analogs of the antibiotic fosmidomycin, an inhibitor of the methylerythritol phosphate pathway to isoprenoids, were synthesized and evaluated against the recombinant Synechocystis sp. PCC6803 1-deoxy-d-xylulose 5-phosphate reductoisomerase (DXR). Fosfoxacin, the phosphate analog of fosmidomycin, and its acetyl congener were found to be more potent inhibitors of DXR than fosmidomycin.
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Affiliation(s)
- Youn-Hi Woo
- Department of Pharmaceutical Sciences, College of Pharmacy, Pharmacy Bldg. Rm. 203, Oregon State University, Corvallis, OR 97331-3507, USA
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