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Simone MI. Diastereoselective Synthesis of the Borylated d-Galactose Monosaccharide 3-Boronic-3-Deoxy-d-Galactose and Biological Evaluation in Glycosidase Inhibition and in Cancer for Boron Neutron Capture Therapy (BNCT). Molecules 2023; 28:molecules28114321. [PMID: 37298796 DOI: 10.3390/molecules28114321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/06/2023] [Accepted: 05/09/2023] [Indexed: 06/12/2023] Open
Abstract
Drug leads with a high Fsp3 index are more likely to possess desirable properties for progression in the drug development pipeline. This paper describes the development of an efficient two-step protocol to completely diastereoselectively access a diethanolamine (DEA) boronate ester derivative of monosaccharide d-galactose from the starting material 1,2:5,6-di-O-isopropylidene-α-d-glucofuranose. This intermediate, in turn, is used to access 3-boronic-3deoxy-d-galactose for boron neutron capture therapy (BNCT) applications. The hydroboration/borane trapping protocol was robustly optimized with BH3.THF in 1,4-dioxane, followed by in-situ conversion of the inorganic borane intermediate to the organic boron product by the addition of DEA. This second step occurs instantaneously, with the immediate formation of a white precipitate. This protocol allows expedited and greener access to a new class of BNCT agents with an Fsp3 index = 1 and a desirable toxicity profile. Furthermore, presented is the first detailed NMR analysis of the borylated free monosaccharide target compound during the processes of mutarotation and borarotation.
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Affiliation(s)
- Michela I Simone
- Discipline of Chemistry, University of Newcastle, Callaghan, NSW 2308, Australia
- Newcastle CSIRO Energy Centre, 10 Murray Dwyer Circuit, Newcastle, NSW 2304, Australia
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Anti-HIV Agents From Nature: Natural Compounds From Hypericum hircinum and Carbocyclic Nucleosides From Iridoids. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2018. [DOI: 10.1016/b978-0-444-64058-1.00006-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Sharma GVM, Anjaiah G, Kanakaraju M, Sudhakar B, Chatterjee D, Kunwar AC. Synthesis of a new β-amino acid with a 3-deoxy-L-ara furnaoside side chain: the influence of the side chain on the conformation of α/β-peptides. Org Biomol Chem 2016; 14:503-515. [PMID: 26489370 DOI: 10.1039/c5ob01753j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The important role of side chains in the stabilization of helical folds in peptidic foldamers containing C-linked carbo-β-amino acids (β-Caa), an interesting class of β-amino acids, with carbohydrate side chains has been extensively elaborated. As a pragmatic approach to alleviate the interference of substituents in the side chains on the folding propensities of the peptides, they are often modified or removed. The present study reports the synthesis of a new β-Caa with a 3-deoxy-L-ara furanoside side chain, [(R)-β-Caa(da)], from D-glucose, and its use in the synthesis of α/β-peptides in 1 : 1 alternation with D-Ala. The synthesis of peptides using (R)-β-Caa(da), was facile unlike those from (R)-β-Caa(a) having the L-ara furanoside side chain. The detailed NMR, molecular dynamics (MD) and CD studies on the new α/β-peptides showed the presence of robust left-handed 11/9-mixed helices. The study demonstrates that the new (R)-β-Caa(da), behaves differently compared to the other two related monomers, (R)-β-Caa(x) with the D-xylo furanoside side chain and (R)-β-Caa(a).
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Affiliation(s)
- Gangavaram V M Sharma
- Organic and Biomolecular Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India.
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Shah A, Khan AM, Qureshi R, Ansari FL, Nazar MF, Shah SS. Redox behavior of anticancer chalcone on a glassy carbon electrode and evaluation of its interaction parameters with DNA. Int J Mol Sci 2008; 9:1424-1434. [PMID: 19325813 PMCID: PMC2635733 DOI: 10.3390/ijms9081424] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2008] [Revised: 07/23/2008] [Accepted: 07/23/2008] [Indexed: 11/16/2022] Open
Abstract
The interaction of anticancer chalcone [AMC, 1-(4′-aminophenyl)-3-(4-N,N-dimethylphenyl)-2-propen-1-one] with DNA has been explored using electrochemical, spectroscopic and viscometric techniques. A shift in peak potential and decrease in peak current were observed in cyclic voltammetry and hypochromism accompanied with bathochromic shift were noticed in UV-Vis absorption spectroscopy. These findings were taken as evidence for AMC –DNA intercalation. A binding constant (K) with a value of 6.15 × 105 M−1 was obtained from CV data, which was also confirmed by UV-Vis absorption titration. Moreover, the diffusion coefficient of the drug with and without DNA (Db and Du), heterogeneous electron transfer rate constant (ko) and electron affinity (A) were also calculated from electrochemical data.
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Affiliation(s)
| | - Asad M. Khan
- Author to whom correspondence should be addressed; E-Mail:
(A. K.); Tel. +92-51-90642047; Fax: +92-51-90642242
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Wang S, Zhang A. AN IMPROVED COPPER-CATALYZED CROSS-COUPLING REACTION OF ALKYL TRIFLATES WITH PRIMARY ALKYL GRIGNARD REAGENTS. ORG PREP PROCED INT 2008. [DOI: 10.1080/00304940809458090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Achab S, Das BC. Unsaturated Sugars : An Alternative Route to 3, 5, 6-Trideoxy-1, 2-O-Isopropylidene-α-D-Glycero-Hex-3, 5-Dienofuranose. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397918208061929] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Flechtner TW, Pohlid H. The Introduction of the Diphenylhydrazino Substituent by Triflate Displacement. Photochemical Synthesis of an Aminodeoxy Sugar. J Carbohydr Chem 2006. [DOI: 10.1080/07328308408057900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Binkley RW, Ambrose MG. Synthesis and Reactions of Carbohydrate Trifluoro-Methanesulfonates (Carbohydrate Triplates). J Carbohydr Chem 2006. [DOI: 10.1080/07328308408057896] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Laï R, Martin S, Touret R. Influence of the stereochemistry of sugars on the selectivity of formation of carbohydrate-derived cyclopentadienyl and indenyl ligands. Dalton Trans 2006:3478-84. [PMID: 16832498 DOI: 10.1039/b517146f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Interaction of lithium cyclopentadienide with a suitable partially protected alpha-D-allofuranose triflate, 4, epimer at C3 of glucose, gives as a major product, besides the expected glucose-cyclopentadiene, 5, a glucose-disubstituted cyclopentadiene, 6. This unprecedented behaviour, which does not occur with alpha-D-glucofuranose and other sugars, is tentatively explained by a complexation of LiCp and the oxygen atoms of the isopropylidene function of one molecule of 4 and one of 5, giving a termolecular structure as the result of a template effect. The results of other experiments, such as the use of MgCp2 in place of LiCp or the complexation of oxygen atoms by lithium triflate, which changed the selectivity of the reaction largely in favour of the monosubstitution product 5, support this hypothesis. When lithium indenide is reacted with 4, glucose-monosubstituted and glucose-disubstituted indenes, 8 and 9, respectively, are formed, and 9 is obtained with almost total diastereoselectivity. This result can also be rationalised by a stereoselective complexation of lithium, as shown by separate experiments and by molecular mechanics calculations. Methyltricarbonyl molybdenum(II) complexes have been synthesised and characterised from glucose-monosubstituted 5 and glucose-disubstituted 6 cyclopentadienes.
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Affiliation(s)
- Richard Laï
- U.M.R. 6180-Univ. Paul Cézanne AM3, Case A62, Av. Escadrille Normandie-Niémen, 13397 Marseille Cedex 20, France.
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Yadav J, Prathap I, Tadi BP. Formal synthesis of fostriecin by a carbohydrate-based approach. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.03.116] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Yamamoto H, Hanaya T, Sugiyama KI, Fujii Y, Akamatsu A. Synthesis of 5-Deoxy-5-phosphinyl-D-galactopyranose Derivatives: New Phospha-Sugar Analogs of D-Galactose. HETEROCYCLES 2001. [DOI: 10.3987/com-01-9235] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Horton D, Roski JP, Norris P. Cycloaddition of Cyclopentadiene to 3-Deoxy-1,2:5,6-di-O-isopropylidene-alpha-D-erythro-hex-3-enofuranose. Synthesis and Representative Chemistry of 1,6-Anhydro-2,3-dideoxy-beta-D-glycero-hex-2-enopyran-4-ulose ("Isolevoglucosenone"). J Org Chem 1996; 61:3783-3793. [PMID: 11667230 DOI: 10.1021/jo960032y] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of D-glucose-derived alkene 4 with cyclopentadiene in the presence of a Lewis acid results in the formation of cycloaddition products 8-11. Evidence is presented to show that these 1,6-anhydro sugar-cyclopentadiene adducts do not arise from rearrangement of 4 to isolevoglucosenone (5) followed by cycloaddition but are the result of Lewis acid-catalyzed rearrangement of alkene 4 to acyclic dienophile 12 followed by addition of cyclopentadiene. Major cycloadduct 8 has been utilized as a source of the enantiomerically pure carbocycles 14-25 by manipulation of the alkene and ketone functions and cleavage of the 1,6-anhydro bridge. In the absence of diene, alkene 4 undergoes rearrangement to enone 5 in 32% yield. Reaction of 5 with several dienes results only in the formation of "bottom-face" adducts 10,11, 28, and 29, and conjugate addition of either HN(3) or Me(3)COOH is found to be completely stereoselective to afford 30 and 31, respectively. Subsequent manipulation of azide 30 leads to precursors of several naturally occurring 2-amino-2,3-dideoxy sugars.
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Affiliation(s)
- Derek Horton
- Department of Chemistry, American University, 4400 Massachusetts Avenue, NW, Washington, D.C. 20016-8014
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The mechanism of the hydroxyl → halogen exchange reaction in the presence of triphenylphosphine, N-bromosuccinimide, and N,N-dimethylformamide: application of a new Vilsmeier-type reagent in carbohydrate chemistry. Carbohydr Res 1992. [DOI: 10.1016/0008-6215(92)84042-q] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Baer HH, Gan Y. Synthesis of the methyl 3-amino-3-deoxy-α- and β-d-allopyranosides and -allofuranosides. Carbohydr Res 1991. [DOI: 10.1016/0008-6215(91)80125-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Redlich H, Lenfers JB, Kopf J. Chirale Cyclobutanone durch [2 + 2]-Cycloaddition von Dichlorketen an Kohlenhydratenolether. Angew Chem Int Ed Engl 1989. [DOI: 10.1002/ange.19891010612] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Lerner LM. A convenient preparation of 3-deoxy-1,2-O-isopropylidene-5-O-p-tolysulfonyl-beta-L-threo- pentofuranose. Carbohydr Res 1984; 132:168-72. [PMID: 6488208 DOI: 10.1016/0008-6215(84)85076-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Jacquinet JC, Petitou M, Duchaussoy P, Lederman I, Choay J, Torri G, Sinaÿ P. Synthesis of heparin fragments. A chemical synthesis of the trisaccharide O-(2-deoxy-2-sulfamido-3,6-di-O-sulfo-α-d-glucopyranosyl)-(1→4)-O-(2-O-sulfo-α-l-idopyranosyluronic acid)-(1→4)-2-deoxy-2-sulfamido-6-O-sulfo-d-glucopyranose heptasodium salt. Carbohydr Res 1984. [DOI: 10.1016/0008-6215(84)85281-7] [Citation(s) in RCA: 92] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Risbood PA, Phillips TS, Goodman L. The thiocyanate route to derivatives of 3-thio-d-glucose and 3-thio-d-allose. Carbohydr Res 1981. [DOI: 10.1016/s0008-6215(00)85600-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Design and reactivity of organic functional groups: imidazolylsulfonate (imidazylate) - au efficient and versatile leaving group. Tetrahedron Lett 1981. [DOI: 10.1016/s0040-4039(01)81963-8] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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