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Elferink H, Titulaer WHC, Derks MGN, Veeneman GH, Rutjes FPJT, Boltje TJ. Chloromethyl Glycosides as Versatile Synthons to Prepare Glycosyloxymethyl-Prodrugs. Chemistry 2022; 28:e202103910. [PMID: 35045197 PMCID: PMC9304170 DOI: 10.1002/chem.202103910] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Indexed: 11/21/2022]
Abstract
This work investigates the addition of monosaccharides to marketed drugs to improve their pharmacokinetic properties for oral absorption. To this end, a set of chloromethyl glycoside synthons were developed to prepare a variety of glycosyloxymethyl-prodrugs derived from 5-fluorouracil, thioguanine, propofol and losartan. Drug release was studied in vitro using β-glucosidase confirming rapid conversion of the monosaccharide prodrugs to release the parent drug, formaldehyde and the monosaccharide. To showcase this prodrug approach, a glucosyloxymethyl conjugate of the tetrazole-containing drug losartan was used for in vivo experiments and showed complete release of the drug in a dog-model.
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Affiliation(s)
- Hidde Elferink
- Synthetic Organic Chemistry Institute for Molecules and MaterialsRadboud UniversityHeyendaalseweg 1356525AJ NijmegenThe Netherlands
| | - Willem H. C. Titulaer
- Synthetic Organic Chemistry Institute for Molecules and MaterialsRadboud UniversityHeyendaalseweg 1356525AJ NijmegenThe Netherlands
| | - Maik G. N. Derks
- Synthetic Organic Chemistry Institute for Molecules and MaterialsRadboud UniversityHeyendaalseweg 1356525AJ NijmegenThe Netherlands
| | | | - Floris P. J. T. Rutjes
- Synthetic Organic Chemistry Institute for Molecules and MaterialsRadboud UniversityHeyendaalseweg 1356525AJ NijmegenThe Netherlands
| | - Thomas J. Boltje
- Synthetic Organic Chemistry Institute for Molecules and MaterialsRadboud UniversityHeyendaalseweg 1356525AJ NijmegenThe Netherlands
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2
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Williams SJ. Methoxyacetic acid esters: Applications in protecting group and glycosylation chemistry. Carbohydr Res 2019; 486:107848. [DOI: 10.1016/j.carres.2019.107848] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/16/2019] [Accepted: 10/17/2019] [Indexed: 11/28/2022]
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3
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Isobe H, Fujino T. Triazole-linked analogues of DNA and RNA ((TL)DNA and (TL)RNA): synthesis and functions. CHEM REC 2014; 14:41-51. [PMID: 24734308 DOI: 10.1002/tcr.201300023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Click chemistry has provided us with access to DNA and RNA analogues with non-natural triazole internucleoside linkages. The bond periodicity of the oligonucleotides was designed to enforce duplex formation with natural congeners, and the non-cleavable linkages protect the oligomers against nuclease digestion. This account reviews the progress of the triazole-linked analogues over the past five years. Reinforced by their synthetic robustness, these analogues may find various utilities as tools for exploratory research.
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Varizhuk AM, Kaluzhny DN, Novikov RA, Chizhov AO, Smirnov IP, Chuvilin AN, Tatarinova ON, Fisunov GY, Pozmogova GE, Florentiev VL. Synthesis of triazole-linked oligonucleotides with high affinity to DNA complements and an analysis of their compatibility with biosystems. J Org Chem 2013; 78:5964-9. [PMID: 23724994 DOI: 10.1021/jo400651k] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
New oligonucleotide analogues with triazole internucleotide linkages were synthesized, and their hybridization properties were studied. The analogues demonstrated DNA binding affinities similar to those of unmodified oligonucleotides. The modification was shown to protect the oligonucleotides from nuclease hydrolysis. The modified oligonucleotides were tested as PCR primers. Modifications remote from the 3'-terminus were tolerated by polymerases. Our results suggest that these new oligonucleotide analogues are among the most promising triazole DNA mimics characterized to date.
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Affiliation(s)
- Anna M Varizhuk
- Institute for Physical-Chemical Medicine of Ministry of Public Health, Malaya Pirogovskaya str. 1a, 117312 Moscow, Russia.
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Lin G, Chen CH, Pink M, Pu J, Li L. Chemical synthesis, crystal structure and enzymatic evaluation of a dinucleotide spore photoproduct analogue containing a formacetal linker. Chemistry 2011; 17:9658-68. [PMID: 21780208 PMCID: PMC3180863 DOI: 10.1002/chem.201101821] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Indexed: 11/11/2022]
Abstract
Spore photoproduct (SP) is the exclusive DNA photodamage product found in bacterial endospores. Its photoformation and repair by a metalloenzyme spore photoproduct lyase (SPL) composes the unique SP biochemistry. Despite the fact that the SP was discovered almost 50 years ago, its crystal structure is still unknown and the lack of structural information greatly hinders the study of SP biochemistry. Employing a formacetal linker and organic synthesis, we successfully prepared a dinucleotide SP isostere 5R-CH(2) SP, which contains a neutral CH(2) moiety between the two thymine residues instead of a phosphate. The neutral linker dramatically facilitates the crystallization process, allowing us to obtain the crystal structure for this intriguing thymine dimer half a century after its discovery. Further ROESY spectroscopic, DFT computational, and enzymatic studies of this 5R-CH(2) SP compound prove that it possesses similar properties with the 5R-SP species, suggesting that the revealed structure truly reflects that of SP generated in Nature.
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Affiliation(s)
- Gengjie Lin
- Department of Chemistry and Chemical Biology, Indiana University, Purdue University Indianapolis (IUPUI), 402 N. Blackford St., Indianapolis, IN 46202 (USA)
| | - Chun-Hsing Chen
- Indiana University Molecular Structure Center, Chemistry, A421, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN 47405 (USA)
| | - Maren Pink
- Indiana University Molecular Structure Center, Chemistry, A421, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN 47405 (USA)
| | - Jingzhi Pu
- Department of Chemistry and Chemical Biology, Indiana University, Purdue University Indianapolis (IUPUI), 402 N. Blackford St., Indianapolis, IN 46202 (USA)
| | - Lei Li
- Department of Chemistry and Chemical Biology, Indiana University, Purdue University Indianapolis (IUPUI), 402 N. Blackford St., Indianapolis, IN 46202 (USA)
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, 635 Barnhill Drive, Indianapolis, IN 46202 (USA)
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Quaedflieg PJLM, Pikkemaat JA, van der Marel GA, Kuyl-Yeheskiely E, Altona C, van Boom JH. Synthesis and physicochemical properties of decanucleotides containing (3′→ 5′)-O-CH2-O-linkages at predetermined positions. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19931120104] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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8
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Zuurmond HM, van der Marel GA, van Boom JH. Potential usefulness of sugar 1,2 thio ortho esters in iodonium-promoted glycosidation. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19931120905] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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9
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Pitulescu M, Grapp M, Krätzner R, Knepel W, Diederichsen U. Synthesis of Formacetal-Linked Dinucleotides to Facilitate dsDNA Bending and Binding to the Homeodomain of Pax6. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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10
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Cieślak J, Grajkowski A, Kauffman JS, Duff RJ, Beaucage SL. The 4-(N-dichloroacetyl-N-methylamino)benzyloxymethyl group for 2'-hydroxyl protection of ribonucleosides in the solid-phase synthesis of oligoribonucleotides. J Org Chem 2008; 73:2774-83. [PMID: 18327953 DOI: 10.1021/jo702717g] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Emerging RNA-based technologies for controlling gene expression have triggered a high demand for synthetic oligoribonucleotides and have motivated the development of ribonucleoside phosphoramidites that would exhibit coupling kinetics and coupling efficiencies comparable to those of deoxyribonucleoside phosphoramidites. To fulfill these needs, the novel 4-(N-dichloroacetyl-N-methylamino)benzyloxymethyl group for 2'-hydroxyl protection of ribonucleoside phosphoramidites 9a-d has been implemented (Schemes 1 and 2). The solid-phase synthesis of AUCCGUAGCUAACGUCAUGG was then carried out employing 9a-d as 0.2 M solutions in dry MeCN and 5-benzylthio-1H-tetrazole as an activator. The coupling efficiency of 9a-d averaged 99% within a coupling time of 180 s. Following removal of all base-sensitive protecting groups, cleavage of the remaining 2'-[4-(N-methylamino)benzyl] acetals from the RNA oligonucleotide was effected in buffered 0.1 M AcOH (pH 3.8) within 30 min at 90 degrees C. RP-HPLC and PAGE analyses of the fully deprotected AUCCGUAGCUAACGUCAUGG were comparable to those of a commercial RNA oligonucleotide sharing an identical sequence. Enzymatic digestion of the RNA oligomer catalyzed by bovine spleen phosphodiesterase and bacterial alkaline phosphatase revealed no significant amounts of RNA fragments containing (2'-->5')-internucleotidic phosphodiester linkages or noteworthy nucleobase modifications.
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Affiliation(s)
- Jacek Cieślak
- Division of Therapeutic Proteins, Center for Drug Evaluation and Research, Food and Drug Administration, 8800 Rockville Pike, Bethesda, MD 20892, USA
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Seio K, Terada T, Mizuta M, Ohkubo A, Taguchi H, Sekine M. Synthesis and Hybridization Properties of Oligodeoxynucleotides with Long-Chain Linkers. Helv Chim Acta 2007. [DOI: 10.1002/hlca.200790203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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12
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Rozners E, Katkevica D, Strömberg R. Oligoribonucleotide analogues containing a mixed backbone of phosphodiester and formacetal internucleoside linkages, together with vicinal 2'-O-methyl groups. Chembiochem 2007; 8:537-45. [PMID: 17300110 DOI: 10.1002/cbic.200600515] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Oligoribonucleotides containing formacetal internucleoside linkages have been prepared and studied by UV melting experiments. In RNA duplexes, the formacetal substitution is stabilizing (Deltat(m)=0 to +0.9 degrees C per modification) at physiological salt concentrations (0.1 M) but destabilizing (Deltat(m)=-0.4 to -0.8 degrees C per modification) at high salt concentrations (1 M); this suggests that reduction of electrostatic repulsion contributes substantially to the stabilization. The presence of 2'-O-Me substituents increases the stabilities of the duplexes (Deltat(m)=+0.5 to +1.1 degrees C per modification). The positive effects of formacetals and 2'-O-Me groups were independent and additive. (1)H NMR studies on monomeric model compounds containing 3'-(ethyl phosphate) or 3'-O-ethoxymethyl groups showed that the formacetal and 2'-O-Me substitutions shift the conformational equilibria of the ribose residues towards the North conformers by 5 to 12 %. Although the preference for the North conformers qualitatively correlates with increased duplex stabilities, changes in thermodynamic parameters (DeltaH degrees and TDeltaS degrees ) for formation of oligonucleotide duplexes and differences in dependence on concentrations of sodium acetate, sodium chloride and sodium perchlorate suggest that solvation effects are also important for the duplex stabilities. Overall the formacetal linkages fit well in A-type RNA duplexes, making them potentially interesting modifications for RNA-based gene-control strategies (e.g., antisense and RNA interference).
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Affiliation(s)
- Eriks Rozners
- Division of Organic and Bioorganic Chemistry, MBB Scheele Laboratory, Karolinska Institutet, 17177 Stockholm, Sweden.
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Semenyuk A, Kwiatkowski M. A base-stable dithiomethyl linker for solid-phase synthesis of oligonucleotides. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2006.11.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Gras JL, Fournioux X, Soto T, Lorin C, Rollin P. Synthesis of Carbohydrate Formacetal Dimers Under Non-Acidic Conditions. J Carbohydr Chem 2006. [DOI: 10.1080/07328309708005763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- J.-L. Gras
- a ReSo, Réactivité en Synthèse Organique associé au CNRS, Faculté des Sciences de , Saint-Jérôme D12, F-13397, Marseille, Cedex 20, France
| | - X. Fournioux
- a ReSo, Réactivité en Synthèse Organique associé au CNRS, Faculté des Sciences de , Saint-Jérôme D12, F-13397, Marseille, Cedex 20, France
| | - T. Soto
- a ReSo, Réactivité en Synthèse Organique associé au CNRS, Faculté des Sciences de , Saint-Jérôme D12, F-13397, Marseille, Cedex 20, France
| | - C. Lorin
- b Institut de Chimie Organique et Analytique associé au CNRS, Université d'Orléans , B.P. 6759, F-45067, Orléans, Cedex 2, France
| | - P. Rollin
- b Institut de Chimie Organique et Analytique associé au CNRS, Université d'Orléans , B.P. 6759, F-45067, Orléans, Cedex 2, France
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Tarköy M, Bolli M, Schweizer B, Leumann C. Nucleic-Acid Analogues with Constraint Conformational Flexibility in the Sugar-Phosphate Backbone (‘Bicyclo-DNA’). Part 1. Preparation of (3S,5′R)-2′-Deoxy-3′,5′-ethano-αβ-D-ribonucleosides (‘Bicyclonucleosides’). Helv Chim Acta 2004. [DOI: 10.1002/hlca.19930760132] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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16
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Sato K, Seio K, Sekine M. Squaryl group as a new mimic of phosphate group in modified oligodeoxynucleotides: synthesis and properties of new oligodeoxynucleotide analogues containing an internucleotidic squaryldiamide linkage. J Am Chem Soc 2002; 124:12715-24. [PMID: 12392419 DOI: 10.1021/ja027131f] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This paper describes the synthesis and properties of a new type of modified oligodeoxynucleotide containing a neutral but highly polarized squaryl group as a novel mimic of the phosphate group. A modified thymidine dimer derivative (TsqT) having a squaryldiamide linkage was synthesized in almost quantitative yield by a two-step substitution of diethyl squarate with 3'-amino-5'-O-(4,4'-dimethoxytrityl)-3'-deoxythymidine and 5'-amino-5'-deoxythymidine. The CD and UV studies of TsqT suggest that this dimer has basically a structure similar to that of TpT. The NMR studies of TsqT show a unique property, namely, that the squaryl group of TsqT is influenced by Mg2+ concentration. The ab initio calculations of TsqT showed a highly polarized structure resembling that of a phosphate group. This dimer structural motif was finally incorporated into oligodeoxynucleotides by use of the phosphoramidite approach. The hybridization affinity of these modified oligodeoxynucleotides for the complementary and mismatched oligodeoxynucleotides was studied in detail by using Tm experiments. Consequently, it turned out that in a matched duplex of 5'-d(CGCATsqTAGCC)-3'/5'-d(GGCTAATGCG)-3' the A-T base pairs at the modified site can be preserved, but instead thermal destabilization of the overall structure was observed. To estimate the structure of the duplex, two kinds of fluorescein chromophores (fluorescein (FL) and cyanine 3 (Cy3)) were introduced into the 5'-terminal site of 5'-d(GACGCATsqTAGCCGAT)-3' and 5'-d(ATCGGCTAATGCGTC)-3', respectively. The fluorescence resonance energy transfer experiments using these functionalized oligodeoxynucleotides suggest that the matched duplexes have a bent structure at the modified site. This conclusion was also strongly supported by computational MM and MD simulations.
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Affiliation(s)
- Kousuke Sato
- Contribution from the Department of Life Science, Faculty of Bioscience and Biotechnology, Tokyo Institute of Technology, Nagatsuta, Midoriku, Yokohama 226-8501, Japan
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Mäntylä A, Vepsäläinen J, Järvinen T, Nevalainen T. A novel synthetic route for the preparation of alkyl and benzyl chloromethyl phosphates. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)00707-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Aström H, Strömberg R. A method for synthesis of an artificial ribonuclease. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2001; 20:1385-8. [PMID: 11563028 DOI: 10.1081/ncn-100002561] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
5-Amino-2,9-dimethyl-1,10-phenanthroline-oligonucleotide conjugates have been synthesized. A 2'-O-methyl octaribonucleotide carrying a 2'-aminoethoxymethyl linker in a central position was produced. Reaction of the aminoneocuproine phenyl carbamate with the fully deprotected oligonucleotide in aqueous solution gave virtually quantitative conversion into the conjugate. Preliminary cleavage studies in presence of zinc ions show nuclease activity towards RNA targets.
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Affiliation(s)
- H Aström
- Division of Organic and Bioorganic Chemistry, MBB, Scheele Laboratory, Karolinska Institutet, S-171 77 Stockholm, Sweden
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Kim HM, Kim IJ, Danishefsky SJ. Total syntheses of tumor-related antigens N3: probing the feasibility limits of the glycal assembly method. J Am Chem Soc 2001; 123:35-48. [PMID: 11273599 DOI: 10.1021/ja0022730] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The total syntheses of two octasaccharide antigens isolated from human milk, 1 and 2, and their corresponding allyl glycosides, 3 and 4, have been achieved by utilizing the glycal method. Convergent assembly of the core hexasaccharides and concurrent introduction of two alpha-L-fucosyl moieties at the late stage of the syntheses provided these complex carbohydrates in a concise manner. With synthetic material obtained, biological evaluations of these antigens as potential gastrointestinal cancer immunotherapeutic agents have been initiated.
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Affiliation(s)
- H M Kim
- Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Ave., New York, New York 10021, USA
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Zavgorodny SG, Pechenov AE, Shvets VI, Miroshnikov AI. S,X-acetals in nucleoside chemistry. III. Synthesis of 2'- and 3'-O-azidomethyl derivatives of ribonucleosides. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2000; 19:1977-91. [PMID: 11200285 DOI: 10.1080/15257770008045472] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
2'- and 3'-O-azidomethyl derivatives of ribonucleosides were obtained by splitting the corresponding methylthiomethyl derivatives of ribonucleosides with bromine or SO2Cl2 followed by lithium azide treatment.
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Affiliation(s)
- S G Zavgorodny
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow
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21
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Pechenov AE, Zavgorodny SG, Shvets VI, Miroshnikov AI. TheS,X-acetals in nucleoside chemistry: II. The synthesis of 3′-O-methylthiomethylribonucleosides. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2000. [DOI: 10.1007/bf02758669] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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TheS,X-acetals in nucleoside chemistry. I. The synthesis of 2′- and 5′-O-methylthiomethylribonucleosides. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2000. [DOI: 10.1007/bf02759285] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Satou K, Komatsu Y, Torizawa T, Kato K, Shimada I, Nikaido O, Ohtsuka E. Efficient chemical synthesis of a pyrimidine (6–4) pyrimidone photoproduct analog and its properties. Tetrahedron Lett 2000. [DOI: 10.1016/s0040-4039(00)00127-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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24
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Synthesis of diverse ethoxyformacetal oligomers. Toward libraries of metal-coordinating unnatural biopolymers. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)10094-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Buijsman RC, Schipperijn JW, Kuyl-Yeheskiely E, van der Marel GA, van Boeckel CA, van Boom JH. Design and synthesis of a possible mimic of a thrombin-binding DNA aptamer. Bioorg Med Chem Lett 1997. [DOI: 10.1016/s0960-894x(97)00351-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Synthesis and inhibitory effect of a trisubstrate transition state analogue for UDP glucuronosyltransferases. Bioorg Med Chem Lett 1997. [DOI: 10.1016/s0960-894x(97)00251-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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van Straten NC, van der Marel GA, van Boom JH. Synthesis of 2′,3″,4″-trisphosphate-containing analogs of adenophostin A. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(97)00308-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Rozners E, Strömberg R. Synthesis and Properties of Oligoribonucleotide Analogs Having Formacetal Internucleoside Linkages. J Org Chem 1997. [DOI: 10.1021/jo962080o] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eriks Rozners
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, S-10691 Stockholm, Sweden, and Laboratory of Organic and Bioorganic Chemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-17177 Stockholm, Sweden
| | - Roger Strömberg
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, S-10691 Stockholm, Sweden, and Laboratory of Organic and Bioorganic Chemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-17177 Stockholm, Sweden
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29
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He GX, Bischofberger N. Preparation of formacetal-linked purine-purine dinucleotide analogs. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)00004-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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30
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Wang J, Matteucci MD. The synthesis and binding properties of oligonucleotide analogs containing diastereomerically pure conformationally restricted acetal linkages. Bioorg Med Chem Lett 1997. [DOI: 10.1016/s0960-894x(96)00607-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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31
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Maione AM, Giordani E, Costa M, Spirito A. Carbohydrate natural products as a scaffolding for the preparation of potential neuraminidase inhibitors. Arch Pharm (Weinheim) 1997; 330:17-20. [PMID: 9112809 DOI: 10.1002/ardp.19973300105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Compound 10b, 6-acetamido-6,8-dideoxy-D-erythro-beta-D- galacto-octopyranosyl-1-oxyacetic acid sodium salt, was synthesised by hydrazinolysis of Lincomycin, acetylation of methylthiolincosaminide (MTL) 9a, and by subsequent glycosylation of acetate 9b with methyl glycolate under mild conditions (NIS/TfOH). The methyl ester 10a was hydrolysed by treatment with Amberlite Ira-4OO (OH-) resin and aqueous sodium hydroxide, followed by neutralisation with Dowex-50 W x 8 (H+) resin and lyophilisation to give 10b. This carboxylate may represent the first derivative in a novel series of sialidase inhibitors utilising carbohydrate natural products. The phosphonate 11c, prepared under the same experimental conditions with dibenzyl(hydroxymethyl)phosphonate as acceptor, also displays an inhibitory activity towards Clostridium perfringens sialidase (Ki in mM range as with Neu5Ac).
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Affiliation(s)
- A M Maione
- Centro di Studio per la Chimica del Farmaco C.N.R., Rome, Italy
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