1
|
Mohanrao R, Manorama R, Ganguli S, Madhusudhanan MC, Bhandari R, Sureshan KM. Novel Substrates for Kinases Involved in the Biosynthesis of Inositol Pyrophosphates and Their Enhancement of ATPase Activity of a Kinase. Molecules 2021; 26:molecules26123601. [PMID: 34208421 PMCID: PMC8231259 DOI: 10.3390/molecules26123601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/07/2021] [Accepted: 06/07/2021] [Indexed: 11/16/2022] Open
Abstract
IP6K and PPIP5K are two kinases involved in the synthesis of inositol pyrophosphates. Synthetic analogs or mimics are necessary to understand the substrate specificity of these enzymes and to find molecules that can alter inositol pyrophosphate synthesis. In this context, we synthesized four scyllo-inositol polyphosphates-scyllo-IP5, scyllo-IP6, scyllo-IP7 and Bz-scyllo-IP5-from myo-inositol and studied their activity as substrates for mouse IP6K1 and the catalytic domain of VIP1, the budding yeast variant of PPIP5K. We incubated these scyllo-inositol polyphosphates with these kinases and ATP as the phosphate donor. We tracked enzyme activity by measuring the amount of radiolabeled scyllo-inositol pyrophosphate product formed and the amount of ATP consumed. All scyllo-inositol polyphosphates are substrates for both the kinases but they are weaker than the corresponding myo-inositol phosphate. Our study reveals the importance of axial-hydroxyl/phosphate for IP6K1 substrate recognition. We found that all these derivatives enhance the ATPase activity of VIP1. We found very weak ligand-induced ATPase activity for IP6K1. Benzoyl-scyllo-IP5 was the most potent ligand to induce IP6K1 ATPase activity despite being a weak substrate. This compound could have potential as a competitive inhibitor.
Collapse
Affiliation(s)
- Raja Mohanrao
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Kerala 695551, India; (R.M.); (M.C.M.)
| | - Ruth Manorama
- Laboratory of Cell Signalling, Centre for DNA Fingerprinting and Diagnostics, Hyderabad 500039, India; (R.M.); (S.G.)
| | - Shubhra Ganguli
- Laboratory of Cell Signalling, Centre for DNA Fingerprinting and Diagnostics, Hyderabad 500039, India; (R.M.); (S.G.)
- Manipal Academy of Higher Education, Manipal 576104, India
| | - Mithun C. Madhusudhanan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Kerala 695551, India; (R.M.); (M.C.M.)
| | - Rashna Bhandari
- Laboratory of Cell Signalling, Centre for DNA Fingerprinting and Diagnostics, Hyderabad 500039, India; (R.M.); (S.G.)
- Correspondence: (R.B.); (K.M.S.)
| | - Kana M. Sureshan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Kerala 695551, India; (R.M.); (M.C.M.)
- Correspondence: (R.B.); (K.M.S.)
| |
Collapse
|
2
|
|
3
|
Thomas MP, Mills SJ, Potter BVL. The "Other" Inositols and Their Phosphates: Synthesis, Biology, and Medicine (with Recent Advances in myo-Inositol Chemistry). Angew Chem Int Ed Engl 2016; 55:1614-50. [PMID: 26694856 PMCID: PMC5156312 DOI: 10.1002/anie.201502227] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Indexed: 12/24/2022]
Abstract
Cell signaling via inositol phosphates, in particular via the second messenger myo-inositol 1,4,5-trisphosphate, and phosphoinositides comprises a huge field of biology. Of the nine 1,2,3,4,5,6-cyclohexanehexol isomers, myo-inositol is pre-eminent, with "other" inositols (cis-, epi-, allo-, muco-, neo-, L-chiro-, D-chiro-, and scyllo-) and derivatives rarer or thought not to exist in nature. However, neo- and d-chiro-inositol hexakisphosphates were recently revealed in both terrestrial and aquatic ecosystems, thus highlighting the paucity of knowledge of the origins and potential biological functions of such stereoisomers, a prevalent group of environmental organic phosphates, and their parent inositols. Some "other" inositols are medically relevant, for example, scyllo-inositol (neurodegenerative diseases) and d-chiro-inositol (diabetes). It is timely to consider exploration of the roles and applications of the "other" isomers and their derivatives, likely by exploiting techniques now well developed for the myo series.
Collapse
Affiliation(s)
- Mark P Thomas
- Department of Pharmacy & Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Stephen J Mills
- Department of Pharmacy & Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Barry V L Potter
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, UK.
| |
Collapse
|
4
|
Thomas MP, Mills SJ, Potter BVL. Die “anderen” Inositole und ihre Phosphate: Synthese, Biologie und Medizin (sowie jüngste Fortschritte in dermyo-Inositolchemie). Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mark P. Thomas
- Department of Pharmacy & Pharmacology; University of Bath; Claverton Down Bath BA2 7AY Vereinigtes Königreich
| | - Stephen J. Mills
- Department of Pharmacy & Pharmacology; University of Bath; Claverton Down Bath BA2 7AY Vereinigtes Königreich
| | - Barry V. L. Potter
- Department of Pharmacology; University of Oxford; Mansfield Road Oxford OX1 3QT Vereinigtes Königreich
| |
Collapse
|
5
|
Jung JY, Jun EJ, Kwon YU, Yoon J. Recognition of myo-inositol 1,4,5-trisphosphate using a fluorescent imidazolium receptor. Chem Commun (Camb) 2012; 48:7928-30. [DOI: 10.1039/c2cc33717g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
6
|
Ghosh SC, Kim BR, Im JK, Lee WS, Im CN, Chang YT, Kim WI, Kim KT, Chung SK. Mitochondrial Affinity of Guanidine-rich Molecular Transporters Built on myo- and scyllo-Inositol Scaffolds: Stereochemistry Dependency. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.12.3623] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
7
|
Mahapatra T, Nanda S. Asymmetric synthesis of hydroxy-skipped bishomo-inositols as potential glycosidase inhibitors. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.07.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
8
|
Swamy KCK, Kumar NNB, Balaraman E, Kumar KVPP. Mitsunobu and Related Reactions: Advances and Applications. Chem Rev 2009; 109:2551-651. [PMID: 19382806 DOI: 10.1021/cr800278z] [Citation(s) in RCA: 868] [Impact Index Per Article: 57.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad − 500046, A. P., India
| | - N. N. Bhuvan Kumar
- School of Chemistry, University of Hyderabad, Hyderabad − 500046, A. P., India
| | - E. Balaraman
- School of Chemistry, University of Hyderabad, Hyderabad − 500046, A. P., India
| | | |
Collapse
|
9
|
Baran A, Balci M. Stereoselective Synthesis of Bishomo-inositols as Glycosidase Inhibitors. J Org Chem 2008; 74:88-95. [DOI: 10.1021/jo801344f] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arif Baran
- Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey, and Department of Chemistry, Sakarya University, 54100 Sakarya, Turkey
| | - Metin Balci
- Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey, and Department of Chemistry, Sakarya University, 54100 Sakarya, Turkey
| |
Collapse
|
10
|
Efficient syntheses of optically pure chiro- and allo-inositol derivatives, azidocyclitols and aminocyclitols from myo-inositol. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.02.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
11
|
Dixit SS, Shashidhar MS. Inositol derived crown ethers: effect of auxiliary protecting groups and the relative orientation of crown ether oxygen atoms on their metal ion binding ability. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.12.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
12
|
Maiti KK, Jeon OY, Lee WS, Chung SK. Design, Synthesis, and Delivery Properties of Novel Guanidine-Containing Molecular Transporters Built on Dimeric Inositol Scaffolds. Chemistry 2007; 13:762-75. [PMID: 17086570 DOI: 10.1002/chem.200600898] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
We have developed a novel class of synthetic molecular transporters that contain eight residues of guanidine with an inositol dimer as the scaffold. The dimers were prepared by connecting two units of myo- or scyllo-inositol via a carbonate or amide linkage, and the multiple units of the guanidine functionality were constructed on the inositol scaffold by means of peracylation with omega-aminocarboxylate derivatives of varying length. Bioassays based on confocal laser scanning microscopy and fluorescence-activated cell sorter analyses indicated that these transporters display a varying degree of membrane translocating ability, and the intracellular localization and mouse-tissue distribution studies strongly suggested that these transporters undergo substantially different mechanistic processes from those of peptide transporters reported to date. It was also shown that doxorubicin, an anticancer antibiotic, can be efficiently delivered into mouse brain by aid of this type of transporter.
Collapse
Affiliation(s)
- Kaustabh K Maiti
- Department of Chemistry, Division of Molecular and Life Sciences, Pohang University of Science and Technology, Pohang 790-784, Korea
| | | | | | | |
Collapse
|
13
|
Ohnishi T, Ohba H, Seo KC, Im J, Sato Y, Iwayama Y, Furuichi T, Chung SK, Yoshikawa T. Spatial expression patterns and biochemical properties distinguish a second myo-inositol monophosphatase IMPA2 from IMPA1. J Biol Chem 2006; 282:637-46. [PMID: 17068342 DOI: 10.1074/jbc.m604474200] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Lithium is used in the clinical treatment of bipolar disorder, a disease where patients suffer mood swings between mania and depression. Although the mode of action of lithium remains elusive, a putative primary target is thought to be inositol monophosphatase (IMPase) activity. Two IMPase genes have been identified in mammals, the well characterized myo-inositol monophosphatase 1 (IMPA1) and myo-inositol monophosphatase 2 (IMPA2). Several lines of genetic evidence have implicated IMPA2 in the pathogenesis of not only bipolar disorder but also schizophrenia and febrile seizures. However, little is known about the protein, although it is predicted to have lithium-inhibitable IMPase activity based on its homology to IMPA1. Here we present the first biochemical study comparing the enzyme activity of IMPA2 to that of IMPA1. We demonstrate that in vivo, IMPA2 forms homodimers but no heterodimers with IMPA1. Recombinant IMPA2 exhibits IMPase activity, although maximal activity requires higher concentrations of magnesium and a higher pH. IMPA2 shows significantly lower activity toward myo-inositol monophosphate than IMPA1. We therefore screened for additional substrates that could be more efficiently dephosphorylated by IMPA2, but failed to find any. Importantly, when using myo-inositol monophosphate as a substrate, the IMPase activity of IMPA2 was inhibited at high lithium and restricted magnesium concentrations. This kinetics distinguishes it from IMPA1. We also observed a characteristic pattern of differential expression between IMPA1 and IMPA2 in a selection of tissues including the brain, small intestine, and kidney. These data suggest that IMPA2 has a separate function in vivo from that of IMPA1.
Collapse
Affiliation(s)
- Tetsuo Ohnishi
- Laboratory for Molecular Psychiatry, RIKEN Brain Science Institute, Wako, Saitama 351-0198, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Riley AM, Trusselle M, Kuad P, Borkovec M, Cho J, Choi JH, Qian X, Shears SB, Spiess B, Potter* BVL. scyllo-inositol pentakisphosphate as an analogue of myo-inositol 1,3,4,5,6-pentakisphosphate: chemical synthesis, physicochemistry and biological applications. Chembiochem 2006; 7:1114-22. [PMID: 16755629 PMCID: PMC1892220 DOI: 10.1002/cbic.200600037] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2006] [Indexed: 01/08/2023]
Abstract
myo-Inositol 1,3,4,5,6-pentakisphosphate (Ins(1,3,4,5,6)P(5)), an inositol polyphosphate of emerging significance in cellular signalling, and its C-2 epimer scyllo-inositol pentakisphosphate (scyllo-InsP(5)) were synthesised from the same myo-inositol-based precursor. Potentiometric and NMR titrations show that both pentakisphosphates undergo a conformational ring-flip at higher pH, beginning at pH 8 for scyllo-InsP(5) and pH 9 for Ins(1,3,4,5,6)P(5). Over the physiological pH range, however, the conformation of the inositol rings and the microprotonation patterns of the phosphate groups in Ins(1,3,4,5,6)P(5) and scyllo-InsP(5) are similar. Thus, scyllo-InsP(5) should be a useful tool for identifying biologically relevant actions of Ins(1,3,4,5,6)P(5), mediated by specific binding sites, and distinguishing them from nonspecific electrostatic effects. We also demonstrate that, although scyllo-InsP(5) and Ins(1,3,4,5,6)P(5) are both hydrolysed by multiple inositol polyphosphate phosphatase (MINPP), scyllo-InsP(5) is not dephosphorylated by PTEN or phosphorylated by Ins(1,3,4,5,6)P(5) 2-kinases. This finding both reinforces the value of scyllo-InsP(5) as a biological control and shows that the axial 2-OH group of Ins(1,3,4,5,6)P(5) plays a part in substrate recognition by PTEN and the Ins(1,3,4,5,6)P(5) 2-kinases.
Collapse
Affiliation(s)
- Andrew M. Riley
- Dr. A. M. Riley, Dr. M. Trusselle, Prof. Dr. B. V. L. Potter, Wolfson Laboratory of Medicinal Chemistry, Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY (UK), Fax: (+44) 1225-386114, E-mail:
| | - Melanie Trusselle
- Dr. A. M. Riley, Dr. M. Trusselle, Prof. Dr. B. V. L. Potter, Wolfson Laboratory of Medicinal Chemistry, Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY (UK), Fax: (+44) 1225-386114, E-mail:
| | - Paul Kuad
- Dr. P. Kuad, Prof. Dr. B. Spiess, Département de Pharmacochimie de la Communication Cellulaire, UMR 7175-LC1 du CNRS-ULP, Faculté de Pharmacie, 74, route du Rhin, B. P. 24, 67401 Illkirch Cedex (France.)
| | - Michal Borkovec
- Dr. M. Borkovec, Department of Inorganic, Analytical, and Applied Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva 4 (Switzerland)
| | - Jaiesoon Cho
- Dr. J. Cho, Dr. J. H. Choi, Dr. X. Qian, Dr. S. B. Shears, Inositide Signaling Group, Laboratory of Signal Transduction and National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709 (USA)
| | - Jae H. Choi
- Dr. J. Cho, Dr. J. H. Choi, Dr. X. Qian, Dr. S. B. Shears, Inositide Signaling Group, Laboratory of Signal Transduction and National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709 (USA)
| | - Xun Qian
- Dr. J. Cho, Dr. J. H. Choi, Dr. X. Qian, Dr. S. B. Shears, Inositide Signaling Group, Laboratory of Signal Transduction and National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709 (USA)
| | - Stephen B. Shears
- Dr. J. Cho, Dr. J. H. Choi, Dr. X. Qian, Dr. S. B. Shears, Inositide Signaling Group, Laboratory of Signal Transduction and National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709 (USA)
| | - Bernard Spiess
- Dr. P. Kuad, Prof. Dr. B. Spiess, Département de Pharmacochimie de la Communication Cellulaire, UMR 7175-LC1 du CNRS-ULP, Faculté de Pharmacie, 74, route du Rhin, B. P. 24, 67401 Illkirch Cedex (France.)
| | - Barry V. L. Potter*
- Dr. A. M. Riley, Dr. M. Trusselle, Prof. Dr. B. V. L. Potter, Wolfson Laboratory of Medicinal Chemistry, Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY (UK), Fax: (+44) 1225-386114, E-mail:
| |
Collapse
|
15
|
Maiti KK, Jeon OY, Lee WS, Kim DC, Kim KT, Takeuchi T, Futaki S, Chung SK. Design, Synthesis, and Membrane-Translocation Studies of Inositol-Based Transporters. Angew Chem Int Ed Engl 2006; 45:2907-12. [PMID: 16555349 DOI: 10.1002/anie.200600312] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kaustabh K Maiti
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Korea
| | | | | | | | | | | | | | | |
Collapse
|
16
|
Maiti KK, Jeon OY, Lee WS, Kim DC, Kim KT, Takeuchi T, Futaki S, Chung SK. Design, Synthesis, and Membrane-Translocation Studies of Inositol-Based Transporters. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600312] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
17
|
Daniellou R, Zheng H, Palmer DRJ. Kinetics of the reaction catalyzed by inositol dehydrogenase fromBacillussubtilisand inhibition by fluorinated substrate analogs. CAN J CHEM 2006. [DOI: 10.1139/v06-033] [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
Inositol dehydrogenase (EC 1.1.1.18) from Bacillus subtilis catalyzes the oxidation of myo-inositol to scyllo-inosose by transfer of the equatorial hydride of the substrate to NAD+. This is a key enzyme in the metabolism of myo-inositol, a primary carbon source for soil bacteria. In light of our recent discovery that the enzyme has a broad substrate spectrum while maintaining high stereoselectivity, we seek a more thorough understanding of the enzyme and its active site. We have examined the kinetics of the recombinant enzyme, and synthesized fluorinated substrate analogues as competitive inhibitors. We have evaluated all rate constants in the ordered, sequential Bi Bi mechanism. No steady-state kinetic isotope effect is observed using myo-[2-2H]-inositol, indicating that the chemical step of the reaction is not rate-limiting. We have synthesized the substrate analogs 2-deoxy-2-fluoro-myo-inositol, its equatorial analog 1-deoxy-1-fluoro-scyllo-inositol, the gem-difluorinated analog 1-deoxy-1,1-difluoro-scyllo-inositol, and the sugar analog α-D-glucosyl fluoride. Of these, 1-deoxy-1-fluoro-scyllo-inositol showed no inhibition, while all others tested had Kivalues comparable to the Kmvalues of the analogous substrates myo-inositol and α-D-glucose.Key words: inositol dehydrogenase, enzyme mechanism, kinetics, competitive inhibitor, substrate analogue.
Collapse
|
18
|
Xu Y, Liu XH, Prestwich GD. Synthesis of phosphatase-resistant analogues of phytic acid (InsP6). Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.09.175] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
19
|
Lee NY, Jang WJ, Yu SH, Im J, Chung SK. Syntheses of glycodendrimers having scyllo-inositol as the scaffold. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.07.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
20
|
Yu SH, Chung SK. Practical syntheses of enantiopure carbasugars: carba-β-altrose, carba-β-mannose, carba-β-idose, and carba-β-talose derivatives. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.tetasy.2003.12.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
21
|
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
| | | | | | | |
Collapse
|
22
|
Kwon YU, Im J, Choi G, Kim YS, Choi KY, Chung SK. Synthesis of three enantiomeric pairs of scyllo-inositol phosphate and molecular interactions between all possible regioisomers of scyllo-inositol phosphate and inositol 1,4,5-trisphosphate 3-kinase. Bioorg Med Chem Lett 2003; 13:2981-4. [PMID: 12941316 DOI: 10.1016/s0960-894x(03)00629-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
scyllo-Inositol phosphates, which are among the stereoisomers of myo-inositol phosphate, can have 15 possible regioisomers including three enantiomeric pairs: scyllo-I(1,2)P(2), scyllo-I(1,2,4)P(3), scyllo-I(1,2,3,4)P(4). We herein describe the facile synthetic routes to the three enantiomeric pairs of scyllo-inositol phosphate and the molecular interactions between 15 regioisomers of scyllo-inositol phosphate and inositol 1,4,5-trisphosphate 3-kinase. Geometry of the enzyme binding site is discussed.
Collapse
Affiliation(s)
- Yong-Uk Kwon
- Department of Chemistry, Division of Molecular and Life Sciences, Pohang University of Science & Technology, Pohang 790-784, South Korea
| | | | | | | | | | | |
Collapse
|
23
|
Sarmah MP, Shashidhar MS. Sulfonate protecting groups. Improved synthesis of scyllo-inositol and its orthoformate from myo-inositol. Carbohydr Res 2003; 338:999-1001. [PMID: 12681925 DOI: 10.1016/s0008-6215(03)00052-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A convenient high yielding method for the preparation of scyllo-inositol and its orthoformate from myo-inositol, without involving chromatography is described. myo-Inositol 1,3,5-orthoformate was benzoylated to obtain 2-O-benzoyl-myo-inositol 1,3,5-orthoformate. This diol was tosylated and the benzoyl group removed by aminolysis in a one-pot procedure to obtain 4,6-di-O-tosyl-myo-inositol 1,3,5-orthoformate. Swern oxidation of the ditosylate, followed by sodium borohydride reduction and methanolysis of tosylates gave scyllo-inositol 1,3,5-orthoformate (isolated as the triacetate). Aminolysis of the acetates followed by acid hydrolysis of the orthoformate moiety with trifluoroacetic acid gave scyllo-inositol in an overall yield of 64%.
Collapse
Affiliation(s)
- Manash P Sarmah
- National Chemical Laboratory, Division of Organic Synthesis, Pune 411 008, India
| | | |
Collapse
|