1
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Sangsuwan W, Taweesablamlert A, Boonkerd A, Isarangkool Na Ayutthaya C, Yoo S, Javid B, Faikhruea K, Vilaivan T, Aonbangkhen C, Chuawong P. A quest for novel antimicrobial targets: Inhibition of Asp-tRNA Asn/Glu-tRNA Gln amidotransferase (GatCAB) by synthetic analogs of aminoacyl-adenosine in vitro and live bacteria. Bioorg Chem 2024; 150:107530. [PMID: 38852310 DOI: 10.1016/j.bioorg.2024.107530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/25/2024] [Accepted: 06/03/2024] [Indexed: 06/11/2024]
Abstract
The Asp-tRNAAsn/Glu-tRNAGln amidotransferase (GatCAB) has been proposed as a novel antibacterial drug target due to its indispensability in prominent human pathogens. While several inhibitors with in vitro activity have been identified, none have been demonstrated to have potent activity against live bacteria. In this work, seven non-hydrolyzable transition state mimics of GatCAB were synthesized and tested as the transamidase inhibitors against GatCAB from the human pathogen Helicobacter pylori. Notably, the methyl sulfone analog of glutamyl-adenosine significantly reduced GatCAB's transamination rate. Additionally, four lipid-conjugates of these mimics displayed antibacterial activity against Bacillus subtilis, likely due to enhanced cell permeability. Inhibitory activity against GatCAB in live bacteria was confirmed using a sensitive gain-of-function dual luciferase reporter in Mycobacterium bovis-BCG. Only the lipid-conjugated methyl sulfone analog exhibited a significant increase in mistranslation rate, highlighting its cell permeability and inhibitory potential. This study provides insights for developing urgently needed novel antibacterial agents amidst emerging antimicrobial drug resistance.
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Affiliation(s)
- Withsakorn Sangsuwan
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Special Research Unit for Advanced Magnetic Resonance (AMR), Kasetsart University, Bangkok 10900, Thailand
| | - Amata Taweesablamlert
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Special Research Unit for Advanced Magnetic Resonance (AMR), Kasetsart University, Bangkok 10900, Thailand
| | - Anon Boonkerd
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Special Research Unit for Advanced Magnetic Resonance (AMR), Kasetsart University, Bangkok 10900, Thailand
| | - Chawarat Isarangkool Na Ayutthaya
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Special Research Unit for Advanced Magnetic Resonance (AMR), Kasetsart University, Bangkok 10900, Thailand
| | - Sion Yoo
- Division of Experimental Medicine, University of California, San Francisco, CA, USA
| | - Babak Javid
- Division of Experimental Medicine, University of California, San Francisco, CA, USA
| | - Kriangsak Faikhruea
- Organic Synthesis Research Unit (OSRU), Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Tirayut Vilaivan
- Organic Synthesis Research Unit (OSRU), Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chanat Aonbangkhen
- Center of Excellence in Natural Products Chemistry (CENP), Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330 Thailand; Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand
| | - Pitak Chuawong
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Special Research Unit for Advanced Magnetic Resonance (AMR), Kasetsart University, Bangkok 10900, Thailand.
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2
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Turnbull BWH, Peng F, Neel AJ, Benkovics T, Liu Z, Chung CK, Song ZJ, Tan L, Emerson KM, Xiao C, Zhang Y, Sherry BD. Development of a Kilogram-Scale Synthesis of a Key Ulevostinag Subunit Part I: Accessing a Keto-Nucleoside Intermediate from Guanosine. Org Process Res Dev 2023. [DOI: 10.1021/acs.oprd.2c00397] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Affiliation(s)
- Ben W. H. Turnbull
- Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Feng Peng
- Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Andrew J. Neel
- Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Tamas Benkovics
- Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Zhuqing Liu
- Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Cheol K. Chung
- Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Zhiguo Jake Song
- Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Lushi Tan
- Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Khateeta M. Emerson
- Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Chengqian Xiao
- Shanghai SynTheAll Pharmaceutical Co., Ltd., Shanghai 201507, China
| | - Yi Zhang
- Shanghai SynTheAll Pharmaceutical Co., Ltd., Shanghai 201507, China
| | - Benjamin D. Sherry
- Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
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3
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Marino C, Bordoni AV. Deoxy sugars. General methods for carbohydrate deoxygenation and glycosidation. Org Biomol Chem 2022; 20:934-962. [PMID: 35014646 DOI: 10.1039/d1ob02001c] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Deoxy sugars represent an important class of carbohydrates, present in a large number of biomolecules involved in multiple biological processes. In various antibiotics, antimicrobials, and therapeutic agents the presence of deoxygenated units has been recognized as responsible for biological roles, such as adhesion or great affinity to receptors, or improved efficacy. The characterization of glycosidases and glycosyltranferases requires substrates, inhibitors and analogous compounds. Deoxygenated sugars are useful for carrying out specific studies for these enzymes. Deoxy sugars, analogs of natural substrates, may behave as substrates or inhibitors, or may not interact with the enzyme. They are also important for glycodiversification studies of bioactive natural products and glycobiological processes, which could contribute to discovering new therapeutic agents with greater efficacy by modification or replacement of sugar units. Deoxygenation of carbohydrates is, thus, of great interest and numerous efforts have been dedicated to the development of methods for the reduction of sugar hydroxyl groups. Given that carbohydrates are the most important renewable chemicals and are more oxidized than fossil raw materials, it is also important to have methods to selectively remove oxygen from certain atoms of these renewable raw materials. The different methods for removal of OH groups of carbohydrates and representative or recent applications of them are presented in this chapter. Glycosidic bonds in general, and 2-deoxy glycosidic linkages, are included. It is not the scope of this survey to cover all reports for each specific technique.
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Affiliation(s)
- Carla Marino
- CIHIDECAR, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, Ciudad Universitaria, 1428 Buenos Aires, Argentina.
| | - Andrea V Bordoni
- Gerencia Química & Instituto de Nanociencia y Nanotecnología - Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, CONICET, Av. Gral. Paz 1499, B1650KNA San Martín, Buenos Aires, Argentina
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4
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Dreger A, Hoff K, Agoglitta O, Bülbül EF, Melesina J, Sippl W, Holl R. Synthesis, biological evaluation, and molecular docking studies of deoxygenated C-glycosides as LpxC inhibitors. Bioorg Chem 2021; 117:105403. [PMID: 34758434 DOI: 10.1016/j.bioorg.2021.105403] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/23/2021] [Accepted: 10/02/2021] [Indexed: 11/29/2022]
Abstract
The bacterial deacetylase LpxC is a promising target for the development of novel antibiotics being selectively active against Gram-negative bacteria. In chiral pool syntheses starting from d- and l-ribose, a series regio- and stereoisomeric monohydroxytetrahydrofuran derivatives was synthesized and tested for LpxC inhibitory and antibacterial activities. Molecular docking studies were performed to rationalize the obtained structure-activity relationships. The (2S,3R,5R)-configured 3-hydroxytetrahydrofuran derivative ent-8 ((2S,3R,5R)-N,3-Dihydroxy-5-(4-{[4-(morpholinomethyl)phenyl]ethynyl}phenyl)tetrahydrofuran-2-carboxamide) was found to be the most potent LpxC inhibitor (Ki = 3.5 µM) of the synthesized series of monohydroxytetrahydrofuran derivatives and to exhibit the highest antibacterial activity against E. coli BL21(DE3) and the D22 strain.
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Affiliation(s)
- Alexander Dreger
- Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany; German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Germany
| | - Katharina Hoff
- Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany; German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Germany
| | - Oriana Agoglitta
- Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany; German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Germany
| | - Emre F Bülbül
- Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120 Halle (Saale), Germany
| | - Jelena Melesina
- Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120 Halle (Saale), Germany
| | - Wolfgang Sippl
- Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120 Halle (Saale), Germany
| | - Ralph Holl
- Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany; German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Germany.
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5
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Model Substrate/Inactivation Reactions for MoaA and Ribonucleotide Reductases: Loss of Bromo, Chloro, or Tosylate Groups from C2 of 1,5-Dideoxyhomoribofuranoses upon Generation of an α-Oxy Radical at C3. Molecules 2020; 25:molecules25112539. [PMID: 32486052 PMCID: PMC7321198 DOI: 10.3390/molecules25112539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/25/2020] [Accepted: 05/28/2020] [Indexed: 01/05/2023] Open
Abstract
We report studies on radical-initiated fragmentations of model 1,5-dideoxyhomoribofuranose derivatives with bromo, chloro, and tosyloxy substituents on C2. The effects of stereochemical inversion at C2 were probed with the corresponding arabino epimers. In all cases, the elimination of bromide, chloride, and tosylate anions occurred when the 3-hydroxyl group was unprotected. The isolation of deuterium-labeled furanone products established heterolytic cleavage followed by the transfer of deuterium from labeled tributylstannane. In contrast, 3-O-methyl derivatives underwent the elimination of bromine or chlorine radicals to give the 2,3-alkene with no incorporation of label in the methyl vinyl ether. More drastic fragmentation occurred with both of the 3-O-methyl-2-tosyloxy epimers to give an aromatized furan derivative with no deuterium label. Contrasting results observed with the present anhydroalditol models relative to our prior studies with analogously substituted nucleoside models have demonstrated that insights from biomimetic chemical reactions can provide illumination of mechanistic pathways employed by ribonucleotide reductases (RNRs) and the MoaA enzyme involved in the biosynthesis of molybdopterin.
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6
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Lv J, Zhu JJ, Liu Y, Dong H. Regioselective Sulfonylation/Acylation of Carbohydrates Catalyzed by FeCl 3 Combined with Benzoyltrifluoroacetone and Its Mechanism Study. J Org Chem 2020; 85:3307-3319. [PMID: 31984732 DOI: 10.1021/acs.joc.9b03128] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A catalytic amount of FeCl3 combined with benzoyl trifluoroacetone (Hbtfa) (FeCl3/Hbtfa = 1/2) was used to catalyze sulfonylation/acylation of diols and polyols using diisopropylethylamine (DIPEA) or potassium carbonate (K2CO3) as a base. The catalytic system exhibited high catalytic activity, leading to excellent isolated yields of sulfonylation/acylation products with high regioselectivities. Mechanism studies indicated that FeCl3 initially formed [Fe(btfa)3] (btfa = benzoyl trifluoroacetonate) with twice the amount of Hbtfa under basic conditions in the solvent acetonitrile at room temperature. Then, Fe(btfa)3 and two hydroxyl groups of the substrates formed a five- or six-membered ring intermediate in the presence of the base. The subsequent reaction between the cyclic intermediate and a sulfonylation reagent led to the selective sulfonylation of the substrate. All key intermediates were captured in the high-resolution mass spectrometry assay, therefore demonstrating this mechanism for the first time.
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Affiliation(s)
- Jian Lv
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, PR China
| | - Jia-Jia Zhu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, PR China
| | - Yu Liu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, PR China
| | - Hai Dong
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, PR China.,Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, PR China
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7
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Ager CR, Zhang H, Wei Z, Jones P, Curran MA, Di Francesco ME. Discovery of IACS-8803 and IACS-8779, potent agonists of stimulator of interferon genes (STING) with robust systemic antitumor efficacy. Bioorg Med Chem Lett 2019; 29:126640. [PMID: 31500996 PMCID: PMC6993876 DOI: 10.1016/j.bmcl.2019.126640] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/22/2019] [Accepted: 08/24/2019] [Indexed: 01/16/2023]
Abstract
Activation of the stimulator of interferon genes (STING) pathway by both exogenous and endogenous cytosolic DNA results in the production of interferon beta (IFN-β) and is required for the generation of cytotoxic T-cell priming against tumor antigens. In the clinical setting, pharmacological stimulation of the STING pathway has the potential to synergize with immunotherapy antibodies by boosting anti-tumor immune responses. We report the discovery of two highly potent cyclic dinucleotide STING agonists, IACS-8803 and IACS-8779, which show robust activation of the STING pathway in vitro and a superior systemic anti-tumor response in the B16 murine model of melanoma when compared to one of the clinical benchmark compounds.
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Affiliation(s)
- Casey R Ager
- Department of Immunology, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blv., Houston 77030, TX, USA; The University of Texas MD Anderson UTHealth Graduate School of Biochemical Sciences, Immunology Program, 1515 Holcombe Blv., Houston 77030, TX, USA
| | - Huaping Zhang
- WuXi AppTec (Wuhan) Co., Ltd., 666 Gaoxin Road, Wuhan East Lake High-tech Development Zone, Hubei 430075, China
| | - Zhanlei Wei
- WuXi AppTec (Wuhan) Co., Ltd., 666 Gaoxin Road, Wuhan East Lake High-tech Development Zone, Hubei 430075, China
| | - Philip Jones
- Institute for Applied Cancer Science, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blv., Houston 77030, TX, USA
| | - Michael A Curran
- Department of Immunology, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blv., Houston 77030, TX, USA; The University of Texas MD Anderson UTHealth Graduate School of Biochemical Sciences, Immunology Program, 1515 Holcombe Blv., Houston 77030, TX, USA
| | - M Emilia Di Francesco
- Institute for Applied Cancer Science, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blv., Houston 77030, TX, USA.
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8
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Ardhapure AV, Sanghvi YS, Borozdina Y, Kapdi AR, Schulzke C. Crystal structure of 8-(4-methyl-phen-yl)-2'-de-oxy-adenosine hemihydrate. Acta Crystallogr E Crystallogr Commun 2018; 74:1-5. [PMID: 29416880 PMCID: PMC5778474 DOI: 10.1107/s2056989017017212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Accepted: 11/30/2017] [Indexed: 11/23/2022]
Abstract
In the asymmetric unit, equalling the unit cell (triclinic, P1, Z = 1), two mol-ecules of the title compound, 8-(4-methyl-phen-yl)-d-2'-de-oxy-adenosine, C17H19N5O3, are present, with distinct conformations of the two sugar moieties, together with one solvent water mol-ecule. All three ribose O atoms are involved in hydrogen bonding and the crystal packing is largely determined by hydrogen-bonding or hydrogen-heteroatom inter-actions (O-H⋯O, O-H⋯N, N-H⋯O, C-H⋯O and C-H⋯N) with one independent mol-ecule directly linked to four neighbouring mol-ecules and the other mol-ecule directly linked to six neighbouring mol-ecules. The two independent mol-ecules of the asymmetric unit display three weak intra-molecular C-H-to-heteroatom contacts, two of which are very similar despite the different conformations of the deoxyribosyl moieties. The aromatic ring systems of both mol-ecules are in proximity to each other and somehow aligned, though not coplanar. The absolute structures of the two mol-ecules were assumed with reference to the reactant 8-bromo-d-2'-de-oxy-adenosine as they could not be determined crystallographically.
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Affiliation(s)
- Ajaykumar V. Ardhapure
- Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh Road, Matunga, Mumbai 400 019, India
| | - Yogesh S. Sanghvi
- Rasayan Inc. 2802, Crystal Ridge Road, Encinitas, California 92024-6615, USA
| | - Yulia Borozdina
- Max Planck Institute for Biological Cybernetics Spemannstrasse 41, D-72076 Tübingen, Germany
| | - Anant Ramakant Kapdi
- Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh Road, Matunga, Mumbai 400 019, India
| | - Carola Schulzke
- Institut für Biochemie, Ernst-Moritz-Arndt Universität Greifswald, Felix-Hausdorff-Strasse 4, D-17487 Greifswald, Germany
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9
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Yao CH, Tsai CH, Lee JC. Total Synthesis of the Naturally Occurring Glycosylflavone Aciculatin. JOURNAL OF NATURAL PRODUCTS 2016; 79:1719-1723. [PMID: 27322193 DOI: 10.1021/acs.jnatprod.5b01051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The new flavone-glycoside aciculatin (1), from Chrysopogon aciculatus, has been shown to have cytotoxic, anti-inflammatory, and antiarthritis activity. Further biological studies have been limited because of the limited availability of 1 from natural sources. Herein the first total synthesis of 1 in an overall yield of 8.3% is described. The synthesis involved the regio- and stereoselective glycosylation-Fries-type O-to-C rearrangement to construct the C-aryl glycosidic linkage, followed by a Baker-Venkataraman rearrangement and cyclodehydration to form the flavone scaffold.
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Affiliation(s)
- Chun-Hsu Yao
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , 35 Keyan Road, Zhunan, Miaoli County 35053, Taiwan
| | - Chi-Hui Tsai
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , 35 Keyan Road, Zhunan, Miaoli County 35053, Taiwan
| | - Jinq-Chyi Lee
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes , 35 Keyan Road, Zhunan, Miaoli County 35053, Taiwan
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10
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Chowdhury MTI, Ando H, Yanagita RC, Kawanami Y. Syntheses and biological activities of deoxy-d-allose fatty acid ester analogs. Biosci Biotechnol Biochem 2016; 80:676-81. [PMID: 26822163 DOI: 10.1080/09168451.2015.1132151] [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] [Indexed: 10/22/2022]
Abstract
We describe the syntheses of three different deoxy-D-allose analogs [2-deoxy-d-allose (2-DOAll), 1,2-dideoxy-d-allose (1,2-DOAll), and 1,2-didehydro-1,2-dideoxy-d-allose (1,2-DHAll)] and their fatty acid esters via regioselective lipase-catalyzed transesterification. Among them, 2-DOAll and its decanoate (2-DOAll-C10) showed higher inhibitory activity on plant growth, which is similar to d-allose (All) [corrected] and its decanoate (All-C10). Bioassay results of deoxy-All-C10 on four plant species suggest that the hydroxy group at the C-1 position might be important showing growth inhibitory activity. In addition, co-addition of gibberellin (GA3) with 1,2-DHAll-C10 and 2-DOAll-C10 recovered plant growth, suggesting that they might mainly inhibit biosynthesis of gibberellin.
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Affiliation(s)
- Md Tazul Islam Chowdhury
- a Faculty of Agriculture, Department of Applied Biological Science , Kagawa University , Miki-cho, Kagawa , Japan
| | - Hikaru Ando
- a Faculty of Agriculture, Department of Applied Biological Science , Kagawa University , Miki-cho, Kagawa , Japan
| | - Ryo C Yanagita
- a Faculty of Agriculture, Department of Applied Biological Science , Kagawa University , Miki-cho, Kagawa , Japan
| | - Yasuhiro Kawanami
- a Faculty of Agriculture, Department of Applied Biological Science , Kagawa University , Miki-cho, Kagawa , Japan
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11
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Muramatsu W. Chemo- and Regioselective Monosulfonylation of Nonprotected Carbohydrates Catalyzed by Organotin Dichloride under Mild Conditions. J Org Chem 2012; 77:8083-91. [DOI: 10.1021/jo301353k] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Wataru Muramatsu
- Graduate School of
biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, Nagasaki 852-8521, Japan
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12
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Fujiwara K, Hirose Y, Sato D, Kawai H, Suzuki T. Studies toward the total synthesis of armatol F: stereoselective construction of the C6 and C7 stereocenters and formation of the A-ring skeleton. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.06.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Robins MJ, Yang H, Miranda K, Peterson MA, De Clercq E, Balzarini J. Synthesis and biological evaluation of 3,3-difluoropyridine-2,4(1H,3H)-dione and 3-deaza-3-fluorouracil base and nucleoside derivatives. J Med Chem 2009; 52:3018-27. [PMID: 19378989 DOI: 10.1021/jm900203h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
New 3-deaza-3-halouracil nucleosides including 3-deaza-3-fluorouridine and its 2'-deoxy and arabino analogues have been prepared by fluorination of protected precursors. The resulting 3,3-difluoropyridine-2,4(1H,3H)-dione derivatives underwent palladium-catalyzed hydrogenolysis of one C-F bond at atmospheric pressure, and deprotection gave the 3-deaza-3-fluorouracil compounds. Selective reaction of a stabilized Wittig reagent at C4 of the 3,3-difluoro-2,4-dione intermediates gave exocyclic alkenes that underwent hydrogenation accompanied by spontaneous elimination of hydrogen fluoride. Ammonolysis of the exocyclic carbethoxymethyl substituent and ester protecting groups gave 4-(carboxamidomethyl)-3-deaza-3-fluorouridine and its analogues. Grignard additions at C4 of the ribo and 2'-deoxy 3,3-difluoro-2,4-dione intermediates followed by deprotection gave the 3-deaza-3,3-difluoro-4-hydroxy-4-(substituted)uracil nucleosides. The cytostatic activity of 3-fluoro-3-deazauridine (CC(50) = 4.4-9.6 microM) in three cancer cell lines paralleled that of 3-deazauridine, whereas no significant inhibitory activity was observed with a variety of virus-infected cell cultures.
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Affiliation(s)
- Morris J Robins
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602-5700, USA.
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14
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Hsieh MT, Chou HH, Liu HJ, Wu HM, Ly TW, Wu YK. Polyene Cyclization Promoted by the Cross-Conjugated α-Carbalkoxy Cyclohexenone System. An Unusual 1,2-Hydride Shift under Lewis Acid Catalysis. Org Lett 2009; 11:1673-5. [DOI: 10.1021/ol802878t] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Min-Tsang Hsieh
- Division of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350, Taiwan, R.O.C., Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, R.O.C., and Axikin Pharmaceuticals, Inc., 10835 Road to the Cure, Suite 250, San Diego, California 92121
| | - Ho-Hsuan Chou
- Division of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350, Taiwan, R.O.C., Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, R.O.C., and Axikin Pharmaceuticals, Inc., 10835 Road to the Cure, Suite 250, San Diego, California 92121
| | - Hsing-Jang Liu
- Division of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350, Taiwan, R.O.C., Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, R.O.C., and Axikin Pharmaceuticals, Inc., 10835 Road to the Cure, Suite 250, San Diego, California 92121
| | - Huang-Min Wu
- Division of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350, Taiwan, R.O.C., Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, R.O.C., and Axikin Pharmaceuticals, Inc., 10835 Road to the Cure, Suite 250, San Diego, California 92121
| | - Tai Wei Ly
- Division of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350, Taiwan, R.O.C., Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, R.O.C., and Axikin Pharmaceuticals, Inc., 10835 Road to the Cure, Suite 250, San Diego, California 92121
| | - Yen-Ku Wu
- Division of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350, Taiwan, R.O.C., Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, R.O.C., and Axikin Pharmaceuticals, Inc., 10835 Road to the Cure, Suite 250, San Diego, California 92121
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15
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Eisenhuth R, Richert C. Convenient syntheses of 3'-amino-2',3'-dideoxynucleosides, their 5'-monophosphates, and 3'-aminoterminal oligodeoxynucleotide primers. J Org Chem 2009; 74:26-37. [PMID: 19053612 DOI: 10.1021/jo8018889] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
5'-Protected 3'-amino-2',3'-dideoxynucleosides containing any of the four canonical nucleobases (A/C/G/T) were prepared via azides in five to six steps, starting from deoxynucleosides. For pyrimidines, the synthetic route involved nucleophilic opening of anhydronucleosides. For purines, an in situ oxidation/reduction sequence, followed by a Mitsunobu reaction with diphenyl-2-pyridylphosphine and sodium azide, provided the 3'-azidonucleosides in high yield and purity. For solid-phase synthesis of aminoterminal oligonucleotides, aminonucleosides were linked to controlled pore glass through a novel hexafluoroglutaric acid linker. These supports gave 3'-aminoterminal primers in high yield and purity via conventional DNA chain assembly and one-step deprotection/release with aqueous ammonia. Primers thus prepared were successfully tested in enzyme-free chemical primer extension, an inexpensive methodology for genotyping and labeling. Protected 5'-monophosphates of 3'-amino-2',3'-dideoxynucleosides were also prepared, providing starting materials for the preparation of labeled or photolably protected monomers for chemical primer extension.
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Affiliation(s)
- Ralf Eisenhuth
- Institute for Organic Chemistry, University of Karlsruhe (TH), 76131 Karlsruhe, Germany
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16
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Affiliation(s)
- Peng Liu
- The University of Georgia, College of Pharmacy, Athens, GA 30602
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17
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Liu R, Chanthamontri C, Han H, Hernández-Torres JM, Wood KV, McLuckey SA, Wei A. Solid-phase synthesis of alpha-glucosamine sulfoforms with fragmentation analysis by tandem mass spectrometry. J Org Chem 2008; 73:6059-72. [PMID: 18610984 DOI: 10.1021/jo800713m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Sulfated epitopes of alpha-glucosamine (GlcN sulfoforms) were prepared by solid-phase synthesis as models of internal glucosamines within heparan sulfate. An orthogonally protected 2'-hydroxyethyl GlcN derivative was immobilized on a trityl resin support and subjected to regioselective deprotection and sulfonation conditions, which were optimized with the aid of on-resin infrared or Raman analysis. The sulfoforms were cleaved from the resin under mild Lewis acid conditions without affecting the O- or N-sulfate groups and purified by reversed-phase high-performance liquid chromatography (HPLC). The alpha-GlcN sulfoforms and their 4- O-benzyl ethers were examined by electrospray ionization tandem mass spectrometry (ESI-MS/MS), with product ion spectra produced by collision-induced dissociation (CID). ESI-MS/MS revealed significant differences in parent ion stabilities and fragmentation rates as a function of sulfate position. Ion fragmentation by CID resulted in characteristic mass losses with strong correlation to the positions of both free hydroxyl groups and sulfate ions. Most of these fragmentation patterns are consonant with elimination pathways, and suggest possible strategies for elucidating the structures of glucosamine-derived sulfoforms with identical m/ z ratios. In particular, fragmentation analysis can easily distinguish GlcN sulfoforms bearing the relatively rare 3- O-sulfate from isomers with the more common 6- O-sulfate.
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Affiliation(s)
- Runhui Liu
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2084, USA
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