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Qiu X, Chong D, Fairbanks AJ. Selective Anomeric Acetylation of Unprotected Sugars with Acetic Anhydride in Water. Org Lett 2023; 25:1989-1993. [PMID: 36912487 DOI: 10.1021/acs.orglett.3c00584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
Unprotected sugars are selectively acetylated simply by stirring in aqueous solution in the presence of acetic anhydride and a weak base such as sodium carbonate. The reaction is selective for acetylation of the anomeric hydroxyl group of mannose, 2-acetamido, and 2-deoxy sugars and can be performed on a large scale. Competitive intramolecular migration of the 1-O-acetate to the 2-hydroxyl group when these two substituents are cis causes over-reaction and the formation of product mixtures.
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Affiliation(s)
- Xin Qiu
- School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
| | - Daniel Chong
- School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
| | - Antony J Fairbanks
- School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
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2
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John A, Dereli B, Ortuño MA, Johnson HE, Hillmyer MA, Cramer CJ, Tolman WB. Selective Decarbonylation of Fatty Acid Esters to Linear α-Olefins. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00411] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Alex John
- Department of Chemistry & Center for Sustainable Polymers and ‡Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United States
| | - Büsra Dereli
- Department of Chemistry & Center for Sustainable Polymers and ‡Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United States
| | - Manuel A. Ortuño
- Department of Chemistry & Center for Sustainable Polymers and ‡Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United States
| | - Hillis E. Johnson
- Department of Chemistry & Center for Sustainable Polymers and ‡Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United States
| | - Marc A. Hillmyer
- Department of Chemistry & Center for Sustainable Polymers and ‡Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United States
| | - Christopher J. Cramer
- Department of Chemistry & Center for Sustainable Polymers and ‡Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United States
| | - William B. Tolman
- Department of Chemistry & Center for Sustainable Polymers and ‡Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455-0431, United States
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3
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Lim D, Fairbanks AJ. Selective anomeric acetylation of unprotected sugars in water. Chem Sci 2017; 8:1896-1900. [PMID: 28553480 PMCID: PMC5424810 DOI: 10.1039/c6sc04667c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 11/09/2016] [Indexed: 12/23/2022] Open
Abstract
High yielding selective acetylation of only the anomeric hydroxyl of unprotected sugars is possible in aqueous solution using 2-chloro-1,3-dimethylimidazolinium chloride (DMC), thioacetic acid, and a suitable base. The reaction, which may be performed on a multi-gram scale, is stereoselective for sugars that possess a hydroxyl group at position-2, exclusively yielding the 1,2-trans products. The use of an iterative reagent addition procedure allows the use of sodium carbonate as the base, avoiding the formation of triethylammonium salts, which may hamper product purification. The glycosyl acetate products may be used as donor substrates for glycosidase-catalysed synthesis. The crude aqueous acetylation reaction mixture may also be used for this purpose.
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Affiliation(s)
- David Lim
- Department of Chemistry , University of Canterbury , Private Bag 4800 , Christchurch , 8140 , New Zealand .
| | - Antony J Fairbanks
- Department of Chemistry , University of Canterbury , Private Bag 4800 , Christchurch , 8140 , New Zealand .
- Biomolecular Interaction Centre , University of Canterbury , Private Bag 4800 , Christchurch , 8140 , New Zealand
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4
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Ghosh S, Das S, De AK, Kar N, Bera T. Amphotericin B-loaded mannose modified poly(d,l-lactide-co-glycolide) polymeric nanoparticles for the treatment of visceral leishmaniasis: in vitro and in vivo approaches. RSC Adv 2017. [DOI: 10.1039/c7ra04951j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Amphotericin B-loaded mannose modified PLGA nanoparticles are more efficacious in the treatment of visceral leishmaniasis in bothin vitroandin vivomodels than unmodified nanoformulations.
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Affiliation(s)
- Santanu Ghosh
- Laboratory of Nanomedicine
- Division of Pharmaceutical Biotechnology
- Department of Pharmaceutical Technology
- Jadavpur University
- Kolkata-700 032
| | - Suman Das
- Laboratory of Nanomedicine
- Division of Pharmaceutical Biotechnology
- Department of Pharmaceutical Technology
- Jadavpur University
- Kolkata-700 032
| | - Asit Kumar De
- Laboratory of Nanomedicine
- Division of Pharmaceutical Biotechnology
- Department of Pharmaceutical Technology
- Jadavpur University
- Kolkata-700 032
| | - Nabanita Kar
- Laboratory of Nanomedicine
- Division of Pharmaceutical Biotechnology
- Department of Pharmaceutical Technology
- Jadavpur University
- Kolkata-700 032
| | - Tanmoy Bera
- Laboratory of Nanomedicine
- Division of Pharmaceutical Biotechnology
- Department of Pharmaceutical Technology
- Jadavpur University
- Kolkata-700 032
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5
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Lim D, Brimble MA, Kowalczyk R, Watson AJA, Fairbanks AJ. Protecting-Group-Free One-Pot Synthesis of Glycoconjugates Directly from Reducing Sugars. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406694] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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6
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Lim D, Brimble MA, Kowalczyk R, Watson AJA, Fairbanks AJ. Protecting-group-free one-pot synthesis of glycoconjugates directly from reducing sugars. Angew Chem Int Ed Engl 2014; 53:11907-11. [PMID: 25199905 DOI: 10.1002/anie.201406694] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Indexed: 11/09/2022]
Abstract
The conversion of sugars into glycomimetics typically involves multiple protecting-group manipulations. The development of methodology allowing the direct aqueous conversion of free sugars into glycosides, and mimics of oligosaccharides and glycoconjugates in a high-yielding and stereoselective process is highly desirable. The combined use of 2-azido-1,3-dimethylimidazolinium hexafluorophosphate and the Cu-catalyzed Huisgen cycloaddition allowed the synthesis of a range of glycoconjugates in a one-step reaction directly from reducing sugars under aqueous conditions. The reaction, which is completely stereoselective, may be applied to the convergent synthesis of triazole-linked glycosides, oligosaccharides, and glycopeptides. The procedure provides a method for the one-pot aqueous ligation of oligosaccharides and peptides bearing alkyne side chains.
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Affiliation(s)
- David Lim
- Department of Chemistry, University of Canterbury, Private Bag 4800, Christchurch 8140 (New Zealand)
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7
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Shimotori Y, Tsutano K, Soga K, Osawa Y, Aoyama M, Miyakoshi T. Synthesis of glycosyl ferulate derivatives by amine-promoted glycosylation with regioselective hydrolysis using Novozym 435 and evaluation of their antioxidant properties. Carbohydr Res 2012; 359:11-7. [DOI: 10.1016/j.carres.2012.06.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 06/28/2012] [Accepted: 06/29/2012] [Indexed: 12/01/2022]
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8
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Kirk O, Christensen MW, Beck F, Damhus T. Lipase-Catalyzed Regioselective Acylation and Deacylation of Glucose Derivatives. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.3109/10242429508998155] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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9
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Sanki AK, Boucau J, Ronning DR, Sucheck SJ. Antigen 85C-mediated acyl-transfer between synthetic acyl donors and fragments of the arabinan. Glycoconj J 2008; 26:589-96. [PMID: 19052863 DOI: 10.1007/s10719-008-9211-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2008] [Revised: 10/20/2008] [Accepted: 10/27/2008] [Indexed: 11/30/2022]
Abstract
Antigen 85 (ag85) is a complex of acyltransferases (ag85A-C) known to play a role in the mycolation of the D-arabino-D-galactan (AG) component of the mycobacterial cell wall. In order to better understand the chemistry and substrate specificity of ag85, a trehalose monomycolate mimic p-nitrophenyl 6-O-octanoyl-beta-D-glucopyranoside (1) containing an octanoyl moiety in lieu of a mycolyl moiety was synthesized as an acyl donor. Arabinofuranoside acceptors, methyl alpha-D-arabinofuranoside (2), methyl beta-D-arabinofuranoside (3), and methyl 2-O-beta-D-arabinofuranosyl-alpha-D-arabinofuranoside (9) were synthesized to mimic the terminal saccharides found on the AG. The acyl transfer reaction between acyl donor 1 and acceptors 2, 3, and 9 in the presence of ag85C from Mycobacterium tuberculosis (M. tuberculosis) resulted in the formation of esters, methyl 2, 5-di-O-octanoyl-alpha-D-arabinofuranoside (10), methyl 5-O-octanoyl-beta-D-arabinofuranoside (11), and methyl 2-O-(5-O-octanoyl-beta-D-arabinofuranosyl)-5-O-octanoyl-alpha-D-arabinofuranoside (12) in 2 h, 2 h and 8 h, respectively. The initial velocities of the reactions were determined with a newly developed assay for acyltransferases. As expected, the regioselectivity corresponds to mycolylation patterns found at the terminus of the AG in M. tuberculosis. The study shows that D-arabinose-based derivatives are capable of acting as substrates for ag85C-mediated acyl-transfer and the acyl glycoside 1 can be used in lieu of TMM extracted from bacteria to study ag85-mediated acyl-transfer and inhibition leading to the better understanding of the ag85 protein class.
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Affiliation(s)
- Aditya K Sanki
- Department of Chemistry, The University of Toledo, Toledo, OH 43606, USA
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10
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Boucau J, Sanki AK, Voss BJ, Sucheck SJ, Ronning DR. A coupled assay measuring Mycobacterium tuberculosis antigen 85C enzymatic activity. Anal Biochem 2008; 385:120-7. [PMID: 18992216 DOI: 10.1016/j.ab.2008.10.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2008] [Revised: 10/14/2008] [Accepted: 10/15/2008] [Indexed: 11/17/2022]
Abstract
The prevalence of drug-resistant strains of Mycobacterium tuberculosis (M. tb) emphasizes the need for new antitubercular drugs. An essential component of the drug discovery process is the development of tools to rapidly screen potential drug libraries against important biological targets. Similarly to well-documented M. tb targets, the antigen 85 (Ag85) enzymes are involved in the maintenance of the mycobacterial cell wall. The products synthesized by these mycolyltransferases are the cell wall components most responsible for the reduced permeability of drugs into the bacterial cell, thereby linking Ag85 activity directly with drug resistance. This article presents the development of a high-throughput colorimetric assay suitable for direct monitoring of the enzymatic activity. The assay uses a synthetic substrate containing three chemical moieties: an octanoyl fatty acid, beta-D-glucose, and p-nitrophenyl. In the context of the assay, Ag85 catalyzes the removal of the fatty acid and releases p-nitrophenyl-beta-D-glucoside. The glucoside is hydrolyzed by beta-glucosidase to release the p-nitrophenolate chromophore. With this assay, the K(M) and k(cat) values of Ag85C were determined to be 0.047 +/- 0.008 mM and 0.062 s(-1), respectively. In addition, the assay exhibits a Z' value of 0.81 +/- 0.06, indicating its suitability for high-throughput screening applications and drug development.
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Affiliation(s)
- Julie Boucau
- Department of Chemistry, 2801 W. Bancroft Street, University of Toledo, Toledo, OH 43606, USA
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11
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Queneau Y, Chambert S, Besset C, Cheaib R. Recent progress in the synthesis of carbohydrate-based amphiphilic materials: the examples of sucrose and isomaltulose. Carbohydr Res 2008; 343:1999-2009. [DOI: 10.1016/j.carres.2008.02.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2007] [Revised: 02/05/2008] [Accepted: 02/06/2008] [Indexed: 10/22/2022]
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12
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Bowkett ER, Harding JR, Maggs JL, Park BK, Perrie JA, Stachulski AV. Efficient synthesis of 1β-O-acyl glucuronides via selective acylation of allyl or benzyl d-glucuronate. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.05.050] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Zhang J, Liang X, Wang D, Kong F. Regio- and stereoselective anomeric esterification of glucopyranose 1,2-diols and a facile preparation of 2-O-acetylated glucopyranosyl trichloroacetimidates from the corresponding 1,2-diols. Carbohydr Res 2007; 342:797-805. [PMID: 17300768 DOI: 10.1016/j.carres.2007.01.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2006] [Revised: 01/15/2007] [Accepted: 01/16/2007] [Indexed: 10/23/2022]
Abstract
A highly regio- and stereoselective anomeric esterification of 3-O-allyl (or benzyl, or benzoyl)-4,6-O-isopropylidene-alpha,beta-d-glucopyranose with acetyl chloride, or allyl chloroformate, or ethyl chloroformate gave the corresponding 2-OH, 1-beta-acetates or -carbonates in excellent yields. The 2-OH, 1-beta-acetates were readily converted to the corresponding 2-O-acetylated glucopyranosyl trichloroacetimidates by reaction with trichloroacetonitrile via base promoted acetyl migration, while the 2-OH, 1-beta-carbonates were good glycosyl acceptors for the synthesis of (1-->2)-linked oligosaccharides.
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Affiliation(s)
- Jianjun Zhang
- Key Lab of Pesticide Chemistry and Application Technology, Department of Applied Chemistry, China Agricultural University, Beijing 100094, China
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14
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Gouéth PY, Gogalis P, Bikanga R, Godé P, Postel D, Ronco G, Villa P. Synthesis of Monoesters as Surfactants and Drugs from D-Glucose. J Carbohydr Chem 2006. [DOI: 10.1080/07328309408009191] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Pierre Y. Gouéth
- a Laboratoire de Chimie Organique et Cinétique , Université de Picardie 33 , rue Saint Leu, 80000 , Amiens , France
| | - Pascalis Gogalis
- a Laboratoire de Chimie Organique et Cinétique , Université de Picardie 33 , rue Saint Leu, 80000 , Amiens , France
| | - Raphaël Bikanga
- a Laboratoire de Chimie Organique et Cinétique , Université de Picardie 33 , rue Saint Leu, 80000 , Amiens , France
| | - Paul Godé
- a Laboratoire de Chimie Organique et Cinétique , Université de Picardie 33 , rue Saint Leu, 80000 , Amiens , France
| | - Denis Postel
- a Laboratoire de Chimie Organique et Cinétique , Université de Picardie 33 , rue Saint Leu, 80000 , Amiens , France
| | - Gino Ronco
- a Laboratoire de Chimie Organique et Cinétique , Université de Picardie 33 , rue Saint Leu, 80000 , Amiens , France
| | - Pierre Villa
- a Laboratoire de Chimie Organique et Cinétique , Université de Picardie 33 , rue Saint Leu, 80000 , Amiens , France
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15
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Lunkenbein S, Coiner H, de Vos CHR, Schaart JG, Boone MJ, Krens FA, Schwab W, Salentijn EMJ. Molecular characterization of a stable antisense chalcone synthase phenotype in strawberry (Fragaria x ananassa). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2006; 54:2145-53. [PMID: 16536589 DOI: 10.1021/jf052574z] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
An octaploid (Fragaria x ananassa cv. Calypso) genotype of strawberry was transformed with an antisense chalcone synthase (CHS) gene construct using a ripening related CHS cDNA from Fragaria x ananassa cv. Elsanta under the control of the constitutive CaMV 35S promoter via Agrobacterium tumefaciens. Out of 25 transgenic lines, nine lines showed a reduction in CHS mRNA accumulation of more than 50% as compared to the untransformed cv. Calypso control. The antisense CHS construct was found to be integrated into the genome, with a copy number ranging from one to four. The pigmentation of the fruit was only affected when less than 5% of the control CHS expression level was detected. A stable antisense phenotype over a period of 4 years was obtained in the primary transgenic lines at a rate of 1:20. As a consequence of the reduced activity of CHS, the levels of anthocyanins, flavonols, and proanthocyanidins were downregulated and precursors of the flavonoid pathway were shunted to the phenylpropanoid pathway leading to highly increased levels of cinnamoyl glucose (520% of control), caffeoyl glucose (816% of control), and feruloyl glucose (1092% of control) as well as p-coumaryl alcohol (363% of control) and p-coumaryl-1-acetate (1079% of control), which occur only as trace components in untransformed control fruits. These results demonstrate that the introduction of an antisense CHS construct in strawberry results in an unpredictable biochemical phenotype, thereby confirming that CHS function is an important regulatory point of substrate flow between the flavonoid and the phenylpropanoid pathways.
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Affiliation(s)
- Stefan Lunkenbein
- Biomolecular Food Technology, Technical University München, Lise-Meitner-Strasse 34, 85354 Freising, Germany
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16
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Lunkenbein S, Bellido M, Aharoni A, Salentijn EMJ, Kaldenhoff R, Coiner HA, Muñoz-Blanco J, Schwab W. Cinnamate metabolism in ripening fruit. Characterization of a UDP-glucose:cinnamate glucosyltransferase from strawberry. PLANT PHYSIOLOGY 2006; 140:1047-58. [PMID: 16443693 PMCID: PMC1400576 DOI: 10.1104/pp.105.074955] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Strawberry (Fragaria x ananassa) fruit accumulate (hydroxy)cinnamoyl glucose (Glc) esters, which may serve as the biogenetic precursors of diverse secondary metabolites, such as the flavor constituents methyl cinnamate and ethyl cinnamate. Here, we report on the isolation of a cDNA encoding a UDP-Glc:cinnamate glucosyltransferase (Fragaria x ananassa glucosyltransferase 2 [FaGT2]) from ripe strawberry cv Elsanta that catalyzes the formation of 1-O-acyl-Glc esters of cinnamic acid, benzoic acid, and their derivatives in vitro. Quantitative real-time PCR analysis indicated that FaGT2 transcripts accumulate to high levels during strawberry fruit ripening and to lower levels in flowers. The levels in fruits positively correlated with the in planta concentration of cinnamoyl, p-coumaroyl, and caffeoyl Glc. In the leaf, high amounts of Glc esters were detected, but FaGT2 mRNA was not observed. The expression of FaGT2 is negatively regulated by auxin, induced by oxidative stress, and by hydroxycinnamic acids. Although FaGT2 glucosylates a number of aromatic acids in vitro, quantitative analysis in transgenic lines containing an antisense construct of FaGT2 under the control of the constitutive 35S cauliflower mosaic virus promoter demonstrated that the enzyme is only involved in the formation of cinnamoyl Glc and p-coumaroyl Glc during ripening.
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Affiliation(s)
- Stefan Lunkenbein
- Biomolecular Food Technology, Technical University Munich, Freising, Germany
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17
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Perrie JA, Harding JR, Holt DW, Johnston A, Meath P, Stachulski AV. Effective Synthesis of 1β-Acyl Glucuronides by Selective Acylation. Org Lett 2005; 7:2591-4. [PMID: 15957898 DOI: 10.1021/ol0507165] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] Acyl glucuronides are vital metabolites for many carboxylic acid containing drugs. We report an efficient new method for the chemical synthesis of these molecules by selective 1beta-acylation of allyl glucuronate with carboxylic acids catalyzed by HATU and then mild deprotection through treatment with Pd(PPh(3))(4) and morpholine. The method is effective for a range of aryl and alkyl carboxylic acids, including important drugs.
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Affiliation(s)
- Jennifer A Perrie
- The Robert Robinson Laboratories, Department of Chemistry, University of Liverpool, UK
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18
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Valorisation of agricultural resources: synthesis of green tensioactives agents from carbohydrates. CR CHIM 2004. [DOI: 10.1016/j.crci.2004.02.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Hanessian S, Lou B. Stereocontrolled glycosyl transfer reactions with unprotected glycosyl donors. Chem Rev 2000; 100:4443-64. [PMID: 11749354 DOI: 10.1021/cr9903454] [Citation(s) in RCA: 135] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S Hanessian
- Advanced SynTech, 9800 Bluegrass Parkway, Louisville, Kentucky 40299
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20
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Ferrer M, Angeles Cruces M, Plou FJ, Bernabé M, Ballesteros A. A Simple Procedure for the Regioselective Synthesis of Fatty Acid Esters of Maltose, Leucrose, Maltotriose and n-Dodecyl Maltosides. Tetrahedron 2000. [DOI: 10.1016/s0040-4020(00)00319-7] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Laurent FMG, Scalla R. Metabolism and cell wall incorporation of phenoxyacetic acid in soybean cell suspension culture. ACTA ACUST UNITED AC 1999. [DOI: 10.1002/(sici)1096-9063(199901)55:1<3::aid-ps861>3.0.co;2-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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22
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Saladino R, Crestini C, Occhionero F, Nicoletti R. Ozonation of Thioamide Containing Heterocycles. A New General and Selective Procedure for the Synthesis of C-2 Substituted Heteroazole Derivatives. SYNTHETIC COMMUN 1996. [DOI: 10.1080/00397919608004633] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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Yamada S, Sugaki T, Matsuzaki K. Twisted Amides as Selective Acylating Agents for Hydroxyl Groups under Neutral Conditions: Models for Activated Peptides during Enzymatic Acyl Transfer Reaction. J Org Chem 1996. [DOI: 10.1021/jo9522015] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shinji Yamada
- Department of Chemistry, Faculty of Science, Ochanomizu University, Otsuka, Bunkyo-ku, Tokyo 112, Japan, and Department of Materials Science, Faculty of Science, Kanagawa University, Hiratsuka, Kanagawa 259-12, Japan
| | - Takayuki Sugaki
- Department of Chemistry, Faculty of Science, Ochanomizu University, Otsuka, Bunkyo-ku, Tokyo 112, Japan, and Department of Materials Science, Faculty of Science, Kanagawa University, Hiratsuka, Kanagawa 259-12, Japan
| | - Kazuhiro Matsuzaki
- Department of Chemistry, Faculty of Science, Ochanomizu University, Otsuka, Bunkyo-ku, Tokyo 112, Japan, and Department of Materials Science, Faculty of Science, Kanagawa University, Hiratsuka, Kanagawa 259-12, Japan
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24
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Highly regio- and stereoselective reductions of carbonyl compounds in aqueous glycosidic media. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(95)02094-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Synthesis, characterization, and reverse-micellar studies of some N-substituted derivatives of 6-amino-6-deoxy-1,2-O-isopropylidene-d-glucose. Carbohydr Res 1995. [DOI: 10.1016/0008-6215(94)00007-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Ziegler T, Pantkowski G. Preparation of 1-O-Acyl-D-GlycopyranosesviaChloroacetylated Glycopyranosyl Donors. J Carbohydr Chem 1993. [DOI: 10.1080/07328309308018996] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Madelaine-Dupuich C, Escoula B, Rico I, Lattes A. Synthesis of Potential Anti-AIDS Amphiphiles. A New Efficient Acylation of Amino-Naphthalene Disulfonic Acid Derivatives. SYNTHETIC COMMUN 1993. [DOI: 10.1080/00397919308013292] [Citation(s) in RCA: 3] [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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Landais Y, Robin JP. Ruthenium dioxide in fluoro acid medium III. Application to the synthesis of aporphinic, homoaporphinic and dibenzazocinic alkaloids. Studies towards the preparation of azafluoranthenic skeleton. Tetrahedron 1992. [DOI: 10.1016/s0040-4020(01)88259-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Belkhouya N, Fre´chou C, Benazza M, Beaupe`re D, Uzan R, Demailly G. Halogenation selective en c-6 de 2-amino-2-desoxy-d-glycopyranoses. Tetrahedron Lett 1991. [DOI: 10.1016/0040-4039(91)80604-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abouhilale S, Greiner J, Riess JG. One-step preparation of 6-perfluoroalkylalkanoates of trehalose and sucrose for biomedical uses. Carbohydr Res 1991; 212:55-64. [PMID: 1959123 DOI: 10.1016/0008-6215(91)84045-g] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The Mitsunobu reaction has been used to obtain 6-polyfluoroalkanoates of alpha,alpha-trehalose and sucrose in yields of approximately 40% and approximately 25%, respectively. 6,6'-Diesters (3-6%) were formed in some reactions and a 6-ester (1.3%) of alpha-D-glucopyranosyl 3,4-anhydro-beta-D-tagatofuranoside in one reaction. The monoesters displayed strong surfactant properties, and reduced considerably the water surface and fluorocarbon/water interfacial tensions. Preliminary results on biocompatibility were encouraging, especially for the 6-esters of alpha,alpha-trehalose.
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Affiliation(s)
- S Abouhilale
- Laboratoire de Chimie Moléculaire, C.N.R.S., Université de Nice-Sophia, Nice, France
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Leon-Ruaud P, Allainmat M, Plusquellec D. A new efficient acylation of free glycosylamines. Tetrahedron Lett 1991. [DOI: 10.1016/s0040-4039(00)74271-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sugar chemistry without protecting groups-III. A facile chemical synthesis of 6-O-acyl-D-glycopyranoses and methyl-6-O-acyl-d-glycopyranosides. Tetrahedron 1991. [DOI: 10.1016/s0040-4020(01)80906-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Plusquellec D, Roulleau F, Lefeuvre M, Brown E. Chimie des sucres sans groupements protecteurs-II reactions selectives d'addition du -glucose, du -galactose et de -glycosylamines a des heterocumulenes. Tetrahedron 1990. [DOI: 10.1016/s0040-4020(01)85430-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Sugar chemistry without protecting groups: a novel regioselective synthesis of 6-O-acyl-D-glucopyranoses and methyl-6-O-acyl-α--glucopyranosides. Tetrahedron Lett 1987. [DOI: 10.1016/s0040-4039(00)96390-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Plusquellec D, Lefeuvre M. Sugar chemistry without protecting groups: A regioselective addition of the primary hydroxyl of monosaccharides to alkylisocyanates. Tetrahedron Lett 1987. [DOI: 10.1016/s0040-4039(00)95568-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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