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Larghi EL, Bracca ABJ, Simonetti SO, Kaufman TS. Recent developments in the total synthesis of natural products using the Ugi multicomponent reactions as the key strategy. Org Biomol Chem 2024; 22:429-465. [PMID: 38126459 DOI: 10.1039/d3ob01837g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
The total syntheses of selected natural products using different versions of the Ugi multicomponent reaction is reviewed on a case-by-case basis. The revision covers the period 2008-2023 and includes detailed descriptions of the synthetic sequences, the use of state-of-the-art chemical reagents and strategies, as well as the advantages and limitations of the transformation and some remedial solutions. Relevant data on the isolation and bioactivity of the different natural targets are also briefly provided. The examples clearly evidence the strategic importance of this transformation and its key role in the modern natural products synthetic chemistry toolbox. This methodology proved to be a valuable means for easily building molecular complexity and efficiently delivering step-economic syntheses even of intricate structures, with a promising future.
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Affiliation(s)
- Enrique L Larghi
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531 (2000), Rosario, Argentina.
| | - Andrea B J Bracca
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531 (2000), Rosario, Argentina.
| | - Sebastián O Simonetti
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531 (2000), Rosario, Argentina.
| | - Teodoro S Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531 (2000), Rosario, Argentina.
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Della-Felice F, de Andrade Bartolomeu A, Pilli RA. The phosphate ester group in secondary metabolites. Nat Prod Rep 2022; 39:1066-1107. [PMID: 35420073 DOI: 10.1039/d1np00078k] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Covering: 2000 to mid-2021The phosphate ester is a versatile, widespread functional group involved in a plethora of biological activities. Its presence in secondary metabolites, however, is relatively rare compared to other functionalities and thus is part of a rather unexplored chemical space. Herein, the chemistry of secondary metabolites containing the phosphate ester group is discussed. The text emphasizes their structural diversity, biological and pharmacological profiles, and synthetic approaches employed in the phosphorylation step during total synthesis campaigns, covering the literature from 2000 to mid-2021.
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Affiliation(s)
- Franco Della-Felice
- Institute of Chemistry, University of Campinas (UNICAMP), P.O. Box 6154, CEP 13083-970 Campinas, Sao Paulo, Brazil.,Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.
| | | | - Ronaldo Aloise Pilli
- Institute of Chemistry, University of Campinas (UNICAMP), P.O. Box 6154, CEP 13083-970 Campinas, Sao Paulo, Brazil
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Morita I, Oyama H, Kiguchi Y, Oguri A, Fujimoto N, Takeuchi A, Tanaka R, Ogata J, Kikura-Hanajiri R, Kobayashi N. Immunochemical monitoring of psilocybin and psilocin to identify hallucinogenic mushrooms. J Pharm Biomed Anal 2020; 190:113485. [PMID: 32866746 DOI: 10.1016/j.jpba.2020.113485] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/12/2020] [Accepted: 07/16/2020] [Indexed: 11/28/2022]
Abstract
Development of rapid and reliable immunochemical methods for monitoring psilocybin (4-phosphoryloxy-N,N-dimethyltryptamine; Pyb) and psilocin (dephosphorylated metabolite; Psi), the psychoactive compounds contained within hallucinogenic mushrooms (magic mushrooms), is desirable in order to identify these mushrooms and regulate their illicit use. Because no antibody was publicly available for this purpose, we generated two independent monoclonal antibodies (mAbs) against Pyb or Psi, and then developed enzyme-linked immunosorbent assays (ELISAs) by using them. To generate the specific antibodies, novel immunogenic conjugates were prepared by linking Pyb or Psi molecules to carrier proteins by modifying their 2-(N,N-dimethylamino)ethyl side chains. Spleen cells from mice immunized with these conjugates were fused with P3/NS1/1-Ag4-1 myeloma cells, and hybridoma clones secreting anti-Pyb and anti-Psi mAbs were established. These mAbs were characterized for their biochemical features and then applied to competitive ELISAs, which used microplates coated with Pyb or Psi linked with albumin. These ELISAs enabled the determination of Pyb or Psi with measurable ranges of ca. 0.20-20 or 0.040-2.0 μg/assay (limit of detection was 0.14 or 0.029 μg/assay), respectively. The related tryptamines were satisfactorily discriminated as exemplified by the cross-reactivity of the ELISA to determine Pyb (or Psi) with Psi (or Pyb) that were found to be 2.8 % (or <0.5 %), respectively. The Pyb and Psi contents in a dried powder of the hallucinogenic mushroom, Psilocybe cubensis, were determined to be 0.39 and 0.32 (w/w)%, respectively. The ELISAs developed using the current mAbs are promising tools for identifying illegal hallucinogenic mushrooms.
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Affiliation(s)
- Izumi Morita
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku, Kobe 658-8558, Japan
| | - Hiroyuki Oyama
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku, Kobe 658-8558, Japan
| | - Yuki Kiguchi
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku, Kobe 658-8558, Japan
| | - Akari Oguri
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku, Kobe 658-8558, Japan
| | - Natsumi Fujimoto
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku, Kobe 658-8558, Japan
| | - Atsuko Takeuchi
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku, Kobe 658-8558, Japan
| | - Rie Tanaka
- National Institute of Health Sciences, 3-25-26, Tonomachi, Kawasaki-ku, Kawasaki 210-9501, Japan
| | - Jun Ogata
- National Institute of Health Sciences, 3-25-26, Tonomachi, Kawasaki-ku, Kawasaki 210-9501, Japan
| | - Ruri Kikura-Hanajiri
- National Institute of Health Sciences, 3-25-26, Tonomachi, Kawasaki-ku, Kawasaki 210-9501, Japan
| | - Norihiro Kobayashi
- Kobe Pharmaceutical University, 4-19-1, Motoyama-Kitamachi, Higashinada-ku, Kobe 658-8558, Japan.
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Abstract
Because polysaccharides have very complicated chemical structures constructed by a great diversity of monosaccharide residues and glycosidic linkages, enzymatic approaches have been identified as powerful tools to precisely synthesize polysaccharides as the reactions progress in highly controlled regio- and stereoarrangements. α-Glucan phosphorylase (GP) is one of the enzymes that have acted as catalysts for the practical production of well-defined polysaccharides. GP can catalyze enzymatic polymerization of α-d-glucose 1-phosphate (Glc-1-P) as a monomer from a maltooligosaccharide primer to produce a pure amylose with well-defined structure via the formation of α(1→4)-glycosidic linkages. Here, the author presents methods which achieve the enzymatic synthesis of functional amylosic materials and amylose analog polysaccharides by GP-catalyzed enzymatic polymerization approaches. As the polymerization progresses at the non-reducing end of the primer, it can be conducted using polymeric primers that are modified at the reducing end and covalently attached on suitable polymeric chains. By using such polymeric primers, various amylose-grafted functional materials can be enzymatically synthesized. For example, the detailed protocol for the synthesis of amylose-grafted poly(γ-glutamic acid) is described. GP shows loose specificity for the recognition of substrates, which allows to recognize some monosaccharide 1-phosphates as analog substrates of Glc-1-P. Representatively, the experimental procedure of the GP-catalyzed enzymatic polymerization of α-d-glucosamine 1-phosphate as the analog substrate is presented to synthesize an α(1→4)-linked glucosamine polymer, that is called amylosamine. By means of a similar approach catalyzed by GP, several amylose analog polysaccharides have been obtained.
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Padiyar LT, Zulueta MML, Sabbavarapu NM, Hung SC. Yb(OTf) 3-Catalyzed Desymmetrization of myo-Inositol 1,3,5-Orthoformate and Its Application in the Synthesis of Chiral Inositol Phosphates. J Org Chem 2017; 82:11418-11430. [PMID: 29019688 DOI: 10.1021/acs.joc.7b01919] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A variety of inositol phosphates including myo-inositol 1,4,5-trisphosphate, which is a secondary messenger in transmembrane signaling, were selectively synthesized via Yb(OTf)3-catalyzed desymmetrization of myo-inositol 1,3,5-orthoformate using a proline-based chiral anhydride as an acylation precursor. The investigated catalytic system could regioselectively differentiate the enantiotopic hydroxy groups of myo-inositol 1,3,5-orthoformate in the presence of a chiral auxiliary. This key step to generate a suitably protected chiral myo-inositol derivatives is described here as a unified approach to access inositol phosphates.
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Affiliation(s)
- Laxmansingh T Padiyar
- Genomics Research Center, Academia Sinica , 128 Section 2 Academia Road, Taipei 115, Taiwan
| | - Medel Manuel L Zulueta
- Genomics Research Center, Academia Sinica , 128 Section 2 Academia Road, Taipei 115, Taiwan
| | | | - Shang-Cheng Hung
- Genomics Research Center, Academia Sinica , 128 Section 2 Academia Road, Taipei 115, Taiwan
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Synthesis and in vitro anticancer activity evaluation of novel bioreversible phosphate inositol derivatives. Eur J Med Chem 2015; 93:172-81. [DOI: 10.1016/j.ejmech.2015.01.064] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 12/29/2014] [Accepted: 01/31/2015] [Indexed: 01/13/2023]
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Liu Y, Cao XF, Liu X, Cao YB, Chu WJ, Yang YS. Synthesis, pharmacokinetics and in vivo antifungal activity of the novel water-soluble prodrugs of itraconazole analogue YL-24. CHINESE CHEM LETT 2013. [DOI: 10.1016/j.cclet.2013.03.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Khlevin DA, Sosonyuk SE, Proskurnina MV, Zefirov NS. Stereoselective Synthesis of Polyhydroxycycloheptanes and Their Phosphate Derivatives from 8-Oxabicyclo[3.2.1]octenes. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201426] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Yang J, Xu H, Zhang Y, Bai L, Deng Z, Mahmud T. Nucleotidylation of unsaturated carbasugar in validamycin biosynthesis. Org Biomol Chem 2010; 9:438-49. [PMID: 20981366 DOI: 10.1039/c0ob00475h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Validamycin A is a member of microbial-derived C(7)N-aminocyclitol family of natural products that is widely used as crop protectant and the precursor of the antidiabetic drug voglibose. Its biosynthetic gene clusters have been identified in several Streptomyces hygroscopicus strains, and a number of genes within the clusters have been functionally analyzed. Of these genes, valB, which encodes a sugar nucleotidyltransferase, was found through inactivation study to be essential for validamycin biosynthesis, but its role was unclear. To characterize the role of ValB in validamycin biosynthesis, four carbasugar phosphate analogues were synthesized and tested as substrate for ValB. The results showed that ValB efficiently catalyzes the conversion of valienol 1-phosphate to its nucleotidyl diphosphate derivatives, whereas other unsaturated carbasugar phosphates were found to be not the preferred substrate. ValB requires Mg(2+), Mn(2+), or Co(2+) for its optimal activity and uses the purine-based nucleotidyltriphosphates (ATP and GTP) more efficiently than the pyrimidine-based NTPs (CTP, dTTP, and UTP) as nucleotidyl donor. ValB represents the first member of unsaturated carbasugar nucleotidyltransferases involved in natural products biosynthesis. Its characterization not only expands our understanding of aminocyclitol-derived natural products biosynthesis, but may also facilitate the development of new tools for chemoenzymatic synthesis of carbohydrate mimetics.
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Affiliation(s)
- Jongtae Yang
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR 97331, USA
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de Bont HBA, van Boom JH, Liskamp RMJ. N, N-diisopropyl-bis(4-chlorobenzyl) phosphoramidite: A versatile phosphitylating agent for the phosphorylation of hydroxy amino acids and preparation of protected phosphopeptides. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19901090106] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Dreef CE, Tuinman RJ, Elie CJJ, van der Marel GA, van Boom JH. Total synthesis of optically active myo-inositol 1,4,5-trisphosphate and myo-inositol 1,3,4,5-tetrakisphosphate. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19881070508] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Swarbrick JM, Gaffney PRJ. Synthesis of 4-C-alkyl inositol 1,4,5-trisphosphates and 1,3,4,5-tetrakisphosphates. J Org Chem 2010; 75:4376-86. [PMID: 20507072 DOI: 10.1021/jo100414e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The preparation of 2,3,6-O-tribenzyl- and 2,6-O-dibenzyl-myo-inositols with beta-primary, secondary, and tertiary 4-C-alkyl or aryl groups is reported. Five of these novel polyols are elaborated to 4-C-alkyl Ins(1,4,5)P(3) and Ins(1,3,4,5)P(4) analogues. Regio- and stereoselective introduction of 4-C-alkyl or aryl substituents proceeded via a 4-exo-methylene oxide. Subsequent regioselective reduction of an orthobenzoate provided a divergent method to access both InsP(3) and InsP(4) precursors. Previously unreported phosphorylation of the tertiary hydroxyl and global deprotection afforded novel analogues that retain their full complement of polar and charged binding features.
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Affiliation(s)
- Joanna M Swarbrick
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
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Swarbrick JM, Cooper S, Bultynck G, Gaffney PRJ. Regioselective deprotection of orthobenzoates for the synthesis of inositol phosphates. Org Biomol Chem 2009; 7:1709-15. [DOI: 10.1039/b901890e] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Fraser-Reid B, Chaudhuri SR, Jayaprakash KN, Lu J, Ramamurty CVS. Efficient Chemical Synthesis of a Dodecasaccharidyl Lipomannan Component of Mycobacterial Lipoarabinomannan. J Org Chem 2008; 73:9732-43. [DOI: 10.1021/jo802000p] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bert Fraser-Reid
- Natural Products and Glycotechnology Research Institute, Inc., 595 F Weathersfield Road, Pittsboro, North Carolina 27312
| | - Siddhartha Ray Chaudhuri
- Natural Products and Glycotechnology Research Institute, Inc., 595 F Weathersfield Road, Pittsboro, North Carolina 27312
| | - K. N. Jayaprakash
- Natural Products and Glycotechnology Research Institute, Inc., 595 F Weathersfield Road, Pittsboro, North Carolina 27312
| | - Jun Lu
- Natural Products and Glycotechnology Research Institute, Inc., 595 F Weathersfield Road, Pittsboro, North Carolina 27312
| | - Changalvala V. S. Ramamurty
- Natural Products and Glycotechnology Research Institute, Inc., 595 F Weathersfield Road, Pittsboro, North Carolina 27312
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Effective synthesis of negatively charged cyclodextrins. Selective access to phosphate cyclodextrins. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.05.094] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Lee RT, Lee YC. Carbohydrate ligands of human C-reactive protein: binding of neoglycoproteins containing galactose-6-phosphate and galactose-terminated disaccharide. Glycoconj J 2007; 23:317-27. [PMID: 16897175 DOI: 10.1007/s10719-006-6173-x] [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] [Received: 09/01/2005] [Revised: 10/31/2005] [Accepted: 11/11/2005] [Indexed: 12/27/2022]
Abstract
Binding of carbohydrate ligand by human C-reactive protein (CRP), in both native form and structurally deviated form (neoCRP or mCRP), was investigated using galactose-6-phosphate (Gal6P)- and Galbeta3GalNAc-containing bovine serum albumin (BSA) derivatives. To this end, we synthesized glycosides of Gal6P and Galbeta3GalNAc that can potentially generate a terminal aldehyde group. omega-Aldehydo glycosides were then conjugated to BSA via reductive amination. Using these neoglycoproteins, we showed that: (1) Gal6P-BSA and Galbeta3GalNAc-BSA bound to both forms of CRP, the former with or without calcium and the latter only in the absence of calcium; (2) phosphate-containing ligands can be bound with or without calcium, but the binding is much stronger in the presence of calcium than in the absence, underscoring the importance of direct coordination of phosphate to two calcium ions observed in the X-ray structure of phosphorylcholine (PC)-CRP complex; (3) cross-inhibition studies further corroborated the hypothesis that binding sites of PC and sugar are contiguous; (4) while PC-BSA bound to the native CRP over a wide pH range of 4.5 to 9, all the carbohydrate ligands and protamine-BSA (poly-cation-based ligand) exhibited optimal binding at around pH 6 to 6.5; and (5) ligand-binding conformation of mCRP appears to be more fragile than that of the native CRP in the acidic media (pH < 6).
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Affiliation(s)
- Reiko T Lee
- Department of Biology, The Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA.
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Nifantiev EE, Grachev MK. Trivalent phosphorus acids amides as phosphorylating agents for alcohols and amines. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc1994v063n07abeh000106] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Borges N, Gonçalves LG, Rodrigues MV, Siopa F, Ventura R, Maycock C, Lamosa P, Santos H. Biosynthetic pathways of inositol and glycerol phosphodiesters used by the hyperthermophile Archaeoglobus fulgidus in stress adaptation. J Bacteriol 2006; 188:8128-35. [PMID: 17028285 PMCID: PMC1698214 DOI: 10.1128/jb.01129-06] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2006] [Accepted: 09/18/2006] [Indexed: 11/20/2022] Open
Abstract
Archaeoglobus fulgidus accumulates di-myo-inositol phosphate (DIP) and diglycerol phosphate (DGP) in response to heat and osmotic stresses, respectively, and the level of glycero-phospho-myo-inositol (GPI) increases primarily when the two stresses are combined. In this work, the pathways for the biosynthesis of these three compatible solutes were established based on the detection of the relevant enzymatic activities and characterization of the intermediate metabolites by nuclear magnetic resonance analysis. The synthesis of DIP proceeds from glucose-6-phosphate via four steps: (i) glucose-6-phosphate was converted into l-myo-inositol 1-phosphate by l-myo-inositol 1-phosphate synthase; (ii) l-myo-inositol 1-phosphate was activated to CDP-inositol at the expense of CTP; this is the first demonstration of CDP-inositol synthesis in a biological system; (iii) CDP-inositol was coupled with l-myo-inositol 1-phosphate to yield a phosphorylated intermediate, 1,1'-di-myo-inosityl phosphate 3-phosphate (DIPP); (iv) finally, DIPP was dephosphorylated into DIP by the action of a phosphatase. The synthesis of the two other polyol-phosphodiesters, DGP and GPI, proceeds via the condensation of CDP-glycerol with the respective phosphorylated polyol, glycerol 3-phosphate for DGP and l-myo-inositol 1-phosphate for GPI, yielding the respective phosphorylated intermediates, 1X,1'X-diglyceryl phosphate 3-phosphate (DGPP) and 1-(1X-glyceryl) myo-inosityl phosphate 3-phosphate (GPIP), which are subsequently dephosphorylated to form the final products. The results disclosed here represent an important step toward the elucidation of the regulatory mechanisms underlying the differential accumulation of these compounds in response to heat and osmotic stresses.
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Affiliation(s)
- Nuno Borges
- Biology Division, Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Rua da Quinta Grande 6, Apartado 127, 2780-156 Oeiras, Portugal
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Rasolonjatovo I, Sarfati SR. 6-N-(N-Methylanthranylamido)-4-Oxo-Hexanoic Acid: A New Fluorescent Protecting Group Applicable To A New Dna Sequencing Method. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/07328319808004742] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Isabelle Rasolonjatovo
- a Unite de Chimie Organique, ERS 558, Institut Pasteur , 28 rue du Dr Roux, 75724 , Paris , France
| | - Simon R. Sarfati
- a Unite de Chimie Organique, ERS 558, Institut Pasteur , 28 rue du Dr Roux, 75724 , Paris , France
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Leriche C, René L, Derouet F, Rousseau B, Badet B. Synthesis of 1,2[3H]-1,2-epoxy analogue of fructose-6P, an affinity label of escherichia coli glucosamine-6P synthase. J Labelled Comp Radiopharm 2006. [DOI: 10.1002/jlcr.2580361111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Jacquinet JC. Synthesis of a set of sulfated and/or phosphorylated oligosaccharide derivatives from the carbohydrate–protein linkage region of proteoglycans. Carbohydr Res 2006; 341:1630-44. [PMID: 16516176 DOI: 10.1016/j.carres.2006.02.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2006] [Revised: 02/07/2006] [Accepted: 02/11/2006] [Indexed: 10/24/2022]
Abstract
The synthesis of a set of various sulfoforms and/or phosphoforms as 7-methoxy-2-naphthyl glycosides of beta-D-Xylp, beta-D-Galp-(1-->4)-beta-D-Xylp, and beta-D-Galp-(1-->3)-beta-D-Galp-(1-->4)-beta-D-Xylp, structures encountered in the common carbohydrate-protein linkage region of proteoglycans, is reported for the first time. These molecules will serve as probes for systematic studies of the substrate specificity of the glycosyltransferases involved in the early steps of the biosynthesis of proteoglycans. A straightforward divergent preparation was achieved using key intermediates, which were designed as common precursors.
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Affiliation(s)
- Jean-Claude Jacquinet
- Institut de Chimie Organique et Analytique, UMR CNRS 6005, UFR Faculté des Sciences, Université d'Orléans, BP 6759, F-45067 Orléans Cedex, France.
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Sala M, Kolar J, Strlic M, Kocevar M. Synthesis of myo-inositol 1,2,3-tris- and 1,2,3,5-tetrakis(dihydrogen phosphate)s as a tool for the inhibition of iron-gall-ink corrosion. Carbohydr Res 2006; 341:897-902. [PMID: 16530742 DOI: 10.1016/j.carres.2006.02.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2005] [Revised: 02/16/2006] [Accepted: 02/23/2006] [Indexed: 11/29/2022]
Abstract
Two myo-inositol phosphates, myo-inositol 1,2,3-tris(dihydrogen phosphate) and myo-inositol 1,2,3,5-tetrakis(dihydrogen phosphate), have been synthesised in several steps from myo-inositol (in Chem. Abstr.: d-myo-inositol) in the form of their sodium salts. They were shown to prevent iron-gall-ink decay in cellulose items at the same level as phytic acid dodecasodium salt.
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Affiliation(s)
- Martin Sala
- National and University Library, Ljubljana, Slovenia
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López‐Prados J, Martín‐Lomas M. Inositolphosphoglycan Mediators: An Effective Synthesis of the Conserved Linear GPI Anchor Structure*. J Carbohydr Chem 2005. [DOI: 10.1081/car-200066956] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abou-Elkhair RAI, Netzel TL. Synthesis of two 8-[(anthraquinone-2-yl)-linked]-2'-deoxyadenosine 3'-benzyl hydrogen phosphates for studies of photoinduced hole transport in DNA. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2005; 24:85-110. [PMID: 15822616 DOI: 10.1081/ncn-51894] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The challenge in working with anthraquinone-2'-deoxyadenosine (AQ-dA) conjugates is that they are insoluble in water and only sparingly soluble in most organic solvents. However, water-soluble AQ-dA conjugates with short linkers are required for study of their electrochemical and intramolecular electron transfer properties in this solvent prior to their use in laser kinetics investigations of photoinduced hole (cation) transport in DNA. This article first describes the synthesis of a water-soluble, ethynyl-linked AQ-dA conjugate, 8-[(anthraquinone-2-yl)ethynyl]-2'-deoxyadenosine 3'-benzyl hydrogen phosphate, based on initial formation of a 5'-O-(4,4'-dimethoxytrityl) (5'-O-DMTr) intermediate. Because intended H2 over Pd/C reduction of the ethynyl linker in 5'-O-DMTr-protected 2'-deoxyadenosines cleaves the DMTr protecting group and precipitates multiple side products, this work also describes the synthesis of an ethylenyl-linked AQ-dA conjugate, 8-[2-(anthraquinone-2-yl)ethyl]-2'-deoxyadenosine 3'-benzyl hydrogen phosphate, starting with a 5'-O-tert-butyldiphenylsilyl protecting group.
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27
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Hale JJ, Yan L, Neway WE, Hajdu R, Bergstrom JD, Milligan JA, Shei GJ, Chrebet GL, Thornton RA, Card D, Rosenbach M, Mandala S. Synthesis, stereochemical determination and biochemical characterization of the enantiomeric phosphate esters of the novel immunosuppressive agent FTY720. Bioorg Med Chem 2005; 12:4803-7. [PMID: 15336258 DOI: 10.1016/j.bmc.2004.07.020] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2004] [Accepted: 07/07/2004] [Indexed: 11/23/2022]
Abstract
The novel immunosuppressive agent FTY720 (1) is phosphorylated in vivo in a variety of species yielding an active metabolite that is an agonist of four of the five known G-protein-coupled sphingosine-1-phosphate (S1P) receptors. A synthesis amenable to producing gram quantities of the stereoisomeric phosphate esters, a determination of their absolute stereochemistry via an enantioselective synthesis and their characterization as S1P receptor agonists and antagonists is reported.
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Affiliation(s)
- Jeffrey J Hale
- Department of Medicinal Chemistry, Merck Research Laboratories, Rahway, NJ 07065, USA.
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28
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López-Prados J, Cuevas F, Reichardt NC, de Paz JL, Morales EQ, Martín-Lomas M. Design and synthesis of inositolphosphoglycan putative insulin mediators. Org Biomol Chem 2005; 3:764-86. [PMID: 15731862 DOI: 10.1039/b418041k] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The binding modes of a series of molecules, containing the glucosamine (1-->6) myo-inositol structural motif, into the ATP binding site of the catalytic subunit of cAMP-dependent protein kinase (PKA) have been analysed using molecular docking. These calculations predict that the presence of a phosphate group at the non-reducing end in pseudodisaccharide and pseudotrisaccharide structures properly orientate the molecule into the binding site and that pseudotrisaccharide structures present the best shape complementarity. Therefore, pseudodisaccharides and pseudotrisaccharides have been synthesised from common intermediates using effective synthetic strategies. On the basis of this synthetic chemistry, the feasibility of constructing small pseudotrisaccharide libraries on solid-phase using the same intermediates has been explored. The results from the biological evaluation of these molecules provide additional support to an insulin-mediated signalling system which involves the intermediacy of inositolphosphoglycans as putative insulin mediators.
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Affiliation(s)
- Javier López-Prados
- Grupo de Carbohidratos, Instituto de Investigaciones Químicas, CSIC, Américo Vespucio s/n, 41092, Sevilla, Spain
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29
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Stanoeva E, He W, De Kimpe N. Natural and synthetic cage compounds incorporating the 2,9,10-trioxatricyclo[4.3.1.03,8]decane type moiety. Bioorg Med Chem 2005; 13:17-28. [PMID: 15582448 DOI: 10.1016/j.bmc.2004.07.070] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2003] [Revised: 05/05/2004] [Accepted: 07/02/2004] [Indexed: 11/20/2022]
Abstract
The 2,9,10-trioxatricyclo[4.3.1.0(3,8)]decane moiety is a tetracyclic cage-like orthoester incorporated in the structure of a series of daphnane derivatives such as resiniferatoxin (RTX), kirkinine, synaptolepis factors, huratoxin etc., exhibiting various biological activities. The approaches to the preparation of cage-like orthoesters starting from partially acylated or unmodified 1,2,4-trihydroxycyclohexane moieties built onto natural as well as synthetic compounds are discussed. Orthoester derivatives of RTX analogs, Ceverathrum alkaloids, myoinositol and pyranoses are included. Stereochemical requirements to the formation of the orthoester unit are discussed. The biological activity of different compounds containing the cage-like orthoester structural fragment is given. The literature is reviewed till 2004.
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Affiliation(s)
- Elena Stanoeva
- Department of Organic Chemistry, Faculty of Agricultural and Applied Biological Sciences, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
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30
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Slättegård R, Teodorovic P, Kinfe HH, Ravenscroft N, Gammon DW, Oscarson S. Synthesis of structures corresponding to the capsular polysaccharide of Neisseria meningitidis group A. Org Biomol Chem 2005; 3:3782-7. [PMID: 16211114 DOI: 10.1039/b507898a] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four differently substituted trimers of the CPS repeating unit have been synthesised in order to investigate the dependence on oligosaccharide size, acetylation and mode of phosphorylation of glycoconjugate vaccines against Neisseria meningitidis group A. A spacer-containing starting monomer, a H-phosphonate elongating monomer and a 6-O-phosphorylated H-phosphonate cap monomer have been synthesised and coupled together to afford, after deprotection, the target trimer structures differing in their acetylation and phosphorylation substitution pattern.
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Affiliation(s)
- Rikard Slättegård
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, S-106 91, Stockholm, Sweden
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31
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Brummond KM, Hong SP. A Formal Total Synthesis of (−)-FR901483, Using a Tandem Cationic Aza-Cope Rearrangement/Mannich Cyclization Approach. J Org Chem 2004; 70:907-16. [PMID: 15675848 DOI: 10.1021/jo0483567] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A formal total synthesis of the immunosuppressant FR901483 has been accomplished. The key step in the synthesis utilizes a tandem cationic aza-Cope rearrangement/Mannich cyclization reaction for accessing the unprecedented bridging tricyclic azaspirane substructure of this compound. The tandem reaction proceeds through a bridgehead iminium ion, a functionality that has rarely been explored in the context of natural product syntheses. Improved stereoselectivity was observed in an aldol reaction when using a Boc-protected amino aldehyde and zinc chloride as an additive. A stereoselective epimerization of the aldehyde-containing stereocenter was achieved with l-phenylalanine upon completion of the Mannich cyclization. Finally, this synthesis is the only one to date that controls the stereochemistry of the oxygen-bearing stereocenters. All other synthetic routes required late stage adjustments to at least one of these stereocenters.
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Affiliation(s)
- Kay M Brummond
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
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32
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Dookhun V, Bennet AJ. Synthesis and biological evaluation of a bicyclo[4.1.0]heptyl analogue of glucose-1-phosphate. CAN J CHEM 2004. [DOI: 10.1139/v04-109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The synthesis of a bicyclo[4.1.0]heptyl analogue of glucose-1-phophate, (1R,2R,3S,4S,5S,6S)-3,4,5-trihydroxy-6-(hydroxymethyl)-bicyclo[4.1.0]heptan-2-yl dihydrogen phosphate (5) is reported. The synthetic route chosen started with methyl α-D-glucopyranoside and was accomplished in 11 steps with an overall yield of 3%. Compound 5 was tested as a potential substrate of UTP:α-D-glucose-1-phosphate uridylyltransferase, the enzyme that converts glucose-1-phosphate into UDP-glucose. However, the conformationally restricted glucose-1-phosphate analogue 5 was found to be a weakly binding inhibitor, rather than a substrate, of the yeast transferase (12% inhibition at a concentration of 0.1 mmol L1).Key words: glucose 1-phosphate, inhibition, UTP:α-D-glucose-1-phosphate uridylyltransferase.
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33
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Sureshan KM, Watanabe Y. An efficient route to optically active inositol derivatives via the resolution of myo-inositol 1,3,5-orthoformate: a short synthesis of d-myo-inositol-4-phosphate. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.tetasy.2004.02.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Sureshan KM, Shashidhar MS, Praveen T, Das T. Regioselective Protection and Deprotection of Inositol Hydroxyl Groups. Chem Rev 2003; 103:4477-503. [PMID: 14611268 DOI: 10.1021/cr0200724] [Citation(s) in RCA: 131] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kana M Sureshan
- Division of Organic Synthesis, National Chemical Laboratory, Pune 411 008, India
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35
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Rudolf MT, Dinkel C, Traynor-Kaplan AE, Schultz C. Antagonists of myo-inositol 3,4,5,6-tetrakisphosphate allow repeated epithelial chloride secretion. Bioorg Med Chem 2003; 11:3315-29. [PMID: 12837542 DOI: 10.1016/s0968-0896(03)00188-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cystic fibrosis (CF) patients suffer from a defect in hydration of mucosal membranes due to mutations in the cystic fibrosis transmembrane regulator (CFTR), an apical chloride channel in mucosal epithelia. Disease expression in CF knockout mice is organ specific, varying with the level of expression of calcium activated Cl(-) channels (CLCA). Therefore, restoring transepithelial Cl(-) secretion by augmenting alternate Cl(-) channels, such as CLCA, could be beneficial. However, CLCA-mediated Cl(-) secretion is transient, due in part to the inhibitory effects of myo-inositol 3,4,5,6-tetrakisphosphate [Ins(3,4,5,6)P(4)]. This suggests that antagonists of Ins(3,4,5,6)P(4) could be useful in treatment of CF. We have, therefore, synthesized a series of membrane-permeant Ins(3,4,5,6)P(4) derivatives, carrying alkyl substituents on the hydroxyl groups and screened them for effects on Cl(-) secretion in a human colonic epithelial cell line, T(84). While membrane-permeant Ins(3,4,5,6)P(4) derivatives had no direct effects on carbachol-stimulated Cl(-) secretion, Ins(3,4,5,6)P(4) derivatives, but not enantiomeric Ins(1,4,5,6)P(4) derivatives, reversed the inhibitory effect of Ins(3,4,5,6)P(4) on subsequent thapsigargin activation of Cl(-) secretion. The extent of the antagonistic effect of the Ins(3,4,5,6)P(4) derivatives varied with the position of the alkyl substituents. Derivatives with a cyclohexylidene ketal or a butyl-chain at the 1-position reversed the Ins(3,4,5,6)P(4)-mediated inhibition of Cl(-) secretion by up to 96 and 85%, respectively, whereas butylation of the 1- and 2-position generated a reversal effect of only 65%. Derivatives carrying the butyl chain only at the 2-position showed no antagonistic effect. These data: (1) Support the hypothesis that Ins(3,4,5,6)P(4) stereospecifically inhibits Ca(2+) activated Cl(-) secretion and that Ins(3,4,5,6)P(4) mediates most, if not all of the cholinergic-mediated inhibition of chloride secretion in T(84) cells; (2) Demonstrate Ins(3,4,5,6)P(4)-mediated inhibition can be completely reversed with rationally designed membrane-permeant Ins(3,4,5,6)P(4) antagonists; (3) Demonstrate that a SAR for membrane-permeant Ins(3,4,5,6) P(4) antagonists can be generated and screened in a physiologically relevant cell-based assay; (4) Indicate that Ins(3,4,5,6)P(4) derivatives could serve as a starting point for the development of therapeutics to treat cystic fibrosis.
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Affiliation(s)
- Marco T Rudolf
- Institut für Organische Chemie, Universität Bremen, UFT, 28359 Bremen, Germany
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36
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Mills SJ, Liu C, Potter BVL. Synthesis of D- and L-myo-inositol 2,4,5-trisphosphate and trisphosphorothioate: structural analogues of D-myo-inositol 1,4,5-trisphosphate. Carbohydr Res 2002; 337:1795-801. [PMID: 12431881 DOI: 10.1016/s0008-6215(02)00289-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The preparation of D- and L-myo-inositol 2,4,5-trisphosphate is described, together with the phosphorothioate counterparts. The known chiral diols D- and L-1,4-di-O-benzyl-5,6-bis-O-p-methoxybenzyl-myo-inositol were regioselectively protected at the 3-position using a benzyl group via a 2,3-O-stannylene acetal. Removal of the p-methoxybenzyl groups of each enantiomer gave D- and L-1,3,6-tri-O-benzyl-myo-inositol. Phosphitylation with bis(benzyloxy)diisoproplyaminophosphine and 1H-tetrazole gave the trisphosphite intermediate for each enantiomer. Oxidation with 3-chloroperoxybenzoic acid gave the fully protected D- and L-myo-inositol 2,4,5-trisphosphates. Sulphoxidation of the D- and L-2,4,5-trisphosphite intermediates gave the fully protected D- and L-myo-inositol 2,4,5-trisphosphorothioate compounds. The fully protected trisphosphates were deblocked using hydrogenolysis and the phosphorothioates were deprotected using sodium in liquid ammonia. The individual compounds were then purified using ion exchange chromatography to afford pure D- and L-myo-inositol 2,4,5-trisphosphates together with the corresponding phosphorothioates.
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Affiliation(s)
- Stephen J Mills
- Wolfson Laboratory of Medicinal Chemistry, Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath BA2 7AY, UK
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37
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Dinkel C, Moody M, Traynor-Kaplan A, Schultz C. Membrane-Permeant 3-OH-Phosphorylated Phosphoinositide Derivatives. Angew Chem Int Ed Engl 2002; 40:3004-8. [PMID: 12203630 DOI: 10.1002/1521-3773(20010817)40:16<3004::aid-anie3004>3.0.co;2-o] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2001] [Revised: 05/21/2001] [Indexed: 11/09/2022]
Abstract
A crucial role in the regulation of epithelial chloride secretion is played by the phosphoinositide PtdIns(3,4,5)P3 . Membrane-permeant derivatives of this and other naturally occurring phosphoinositides have been synthesized. These derivatives, which can be bioactivated, were used in investigations on nasal epithelia of patients suffering from cystic fibrosis.
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Affiliation(s)
- C Dinkel
- Institut für Organische Chemie, Universität Bremen, UFT Leobener Strasse, 28359 Bremen, Germany
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38
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Lahmann M, Garegg PJ, Konradsson P, Oscarson S. Synthesis of a polyphosphorylated GPI-anchor core structure. CAN J CHEM 2002. [DOI: 10.1139/v02-160] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Using a linear assembly approach a highly differentially protected derivative of the common GPI-anchor core structure (α-D-Man-(1[Formula: see text]6)-α-D-Man-(1[Formula: see text]2)-α-D-Man-(1[Formula: see text]4)-α-D-GlcNH2-(1[Formula: see text]6)-D-myo-inositol) has been synthesized. All mannose donors were prepared from a common thioglycoside precursor (1), and coupled to GlcN3-myo-inositol acceptor 5 in a linear five-step glycosylationdeprotection sequence in 49% overall yield, to give the key intermediate 10, with orthogonal temporary protecting groups at the 6'', 2'', 6', and 2 positions of the trimannoside motif and at the 1 and 2 positions of the inositol part. Consecutive removal of the temporary protecting groups in the trimannoside moiety followed by phosphorylation, gave a tetraphosphosphate derivative in 60% overall yield. Removal of a camphor acetal afforded a 1,2-inositol diol, which was converted to a 1,2-cyclic phosphate using commercial methyl dichlorophosphate ([Formula: see text]17, 95%). One-step deprotection using sodium in liquid ammonia afforded the target polyphosphorylated core structure 18 (60%), which will be tested for metabolic insulin action.Key words: glycophosphatidylinositols, linear synthesis, glycosylations, inositolphosphoglycans, IPG.
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39
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Watanabe Y, Munetsugu H, Hayashi M. Comparison of Cyclic and Acyclic Phosphites by Selective Phosphorylation. Synthesis of Phosphatidylinositol 4-Phosphate. CHEM LETT 2002. [DOI: 10.1246/cl.2002.292] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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40
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Bowers SG, Mahmud T, Floss HG. Biosynthetic studies on the alpha-glucosidase inhibitor acarbose: the chemical synthesis of dTDP-4-amino-4,6-dideoxy-alpha-D-glucose. Carbohydr Res 2002; 337:297-304. [PMID: 11841810 DOI: 10.1016/s0008-6215(01)00323-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
To study the biosynthesis of the pseudotetrasaccharide acarbose, dTDP-4-amino-4,6-dideoxy-alpha-D-glucose (3) was prepared from galactose in 16 steps. After initial protecting-group manipulations, the 6-position of galactose was deoxygenated by hydride displacement of a tosylate. Similarly a tosyl group at the 4-position was displaced upon reaction with sodium azide. Conversion of the resulting glycoside to a glycosyl phosphate was accomplished by reaction of a glycosyl trichloroacetimidate with dibenzyl phosphate. Subsequent removal of the benzyl protecting groups and reduction of the azide by hydrogenation and coupling with an activated nucleoside phosphate gave dTDP-4-amino-4,6-dideoxy-alpha-D-glucose.
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Affiliation(s)
- Simeon G Bowers
- Department of Chemistry, University of Washington, Box 351700, Seattle, WA 98195-1700, USA
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41
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42
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Rosenberg HJ, Riley AM, Correa V, Taylor CW, Potter BV. C-glycoside based mimics of D-myo-inositol 1,4,5-trisphosphate. Carbohydr Res 2000; 329:7-16. [PMID: 11086681 DOI: 10.1016/s0008-6215(00)00175-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Epimeric C-glycoside based polyphosphates, alpha- and beta-D-glucopyranosylmethanol 3,4,1'-trisphosphates (8 and 9) were prepared from D-glucose. The key intermediate, allyl 2,6-di-O-benzyl-alpha-D-glucopyranoside, was prepared in five steps (67% yield) from allyl alpha-D-glucopyranoside without the need for chromatography. Compounds 8 and 9 were shown to be full agonists at the Ins(1,4,5)P3 receptors of permeabilised hepatocytes, but with markedly different potencies. Such C-glycoside analogues are worthy of further development as Ins(1,4,5)P, receptor ligands.
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MESH Headings
- Adenosine/analogs & derivatives
- Adenosine/chemistry
- Animals
- Calcium/metabolism
- Calcium Channels/metabolism
- Calcium Radioisotopes
- Calcium Signaling/drug effects
- Dose-Response Relationship, Drug
- Glucose/chemistry
- Glycosides/chemistry
- Hepatocytes/chemistry
- Hepatocytes/drug effects
- Hepatocytes/physiology
- Inositol 1,4,5-Trisphosphate/analogs & derivatives
- Inositol 1,4,5-Trisphosphate/chemical synthesis
- Inositol 1,4,5-Trisphosphate/pharmacology
- Inositol 1,4,5-Trisphosphate Receptors
- Molecular Mimicry
- Rats
- Receptors, Cytoplasmic and Nuclear/agonists
- Receptors, Cytoplasmic and Nuclear/metabolism
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Affiliation(s)
- H J Rosenberg
- Department of Pharmacy and Pharmacology, University of Bath, UK
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43
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Efficient syntheses of (−)-shikimate and (−)-quinate 3-phosphate via trans vicinal diol protection with 2,2,3,3-tetramethoxybutane (TMB) of shikimic and quinic acids. Tetrahedron Lett 2000. [DOI: 10.1016/s0040-4039(00)00280-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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44
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Martín-Lomas M, Flores-Mosquera M, Chiara J. Attempted Synthesis of Type-A Inositolphosphoglycan Mediators – Synthesis of a Pseudohexasaccharide Precursor. European J Org Chem 2000. [DOI: 10.1002/(sici)1099-0690(200004)2000:8<1547::aid-ejoc1547>3.0.co;2-c] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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45
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Martín-Lomas M, Flores-Mosquera M, Khiar N. A New Preparative Synthesis of 1-D-6-O-(2-Amino-2-Deoxy-D-glycopyranosyl)-chiro-Inositol 1-Phosphate and 1,2-Cyclic Phosphate. European J Org Chem 2000. [DOI: 10.1002/(sici)1099-0690(200004)2000:8<1539::aid-ejoc1539>3.0.co;2-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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46
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Bonjoch J, Diaba F, Puigbó G, Solé D, Segarra V, Santamaría L, Beleta J, Ryder H, Palacios JM. Synthesis and biological evaluation of a conformationally free seco-analogue of the immunosuppressant FR901483. Bioorg Med Chem 1999; 7:2891-7. [PMID: 10658593 DOI: 10.1016/s0968-0896(99)00250-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The synthesis of an azaspirocyclic analogue of FR901483, phosphate 2, is described based on the implementation of a key 5-endo aminocyclization promoted by iodine for direct functionalization of the 1-azaspiro[4.5]decane ring at the C-3 atom. Compound 2 has no inhibitory activity in the cell proliferation assays reported.
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Affiliation(s)
- J Bonjoch
- Laboratory of Organic Chemistry, Faculty of Pharmacy, University of Barcelona, Spain.
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47
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48
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Riley AM, Potter BV. l-α-Phosphatidyl-d-myo-inositol 3,5-bisphosphate: total synthesis of a new inositol phospholipid via myo-inositol orthoacetate. Tetrahedron Lett 1998. [DOI: 10.1016/s0040-4039(98)01422-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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49
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Affiliation(s)
- Barry B. Snider
- Department of Chemistry, Brandeis University, Waltham, Massachusetts 02454-9110
| | - Hong Lin
- Department of Chemistry, Brandeis University, Waltham, Massachusetts 02454-9110
| | - Bruce M. Foxman
- Department of Chemistry, Brandeis University, Waltham, Massachusetts 02454-9110
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50
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Grindley TB. Applications of tin-containing intermediates to carbohydrate chemistry. Adv Carbohydr Chem Biochem 1998; 53:17-142. [PMID: 9710969 DOI: 10.1016/s0065-2318(08)60043-8] [Citation(s) in RCA: 141] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- T B Grindley
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada
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