1
|
Ande C, Crich D. Stereodirecting Effect of Esters at the 4-Position of Galacto- and Glucopyranosyl Donors: Effect of 4- C-Methylation on Side-Chain Conformation and Donor Reactivity, and Influence of Concentration and Stoichiometry on Distal Group Participation. J Org Chem 2023; 88:13883-13893. [PMID: 37677151 PMCID: PMC10563135 DOI: 10.1021/acs.joc.3c01496] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Indexed: 09/09/2023]
Abstract
When generated in a mass spectrometer bridged bicyclic 1,3-dioxenium ions derived from 4-O-acylgalactopyranosyl, donors can be observed by infrared spectroscopy at cryogenic temperatures, but they are not seen in the solution phase in contrast to the fused bicyclic 1,3-dioxalenium ions of neighboring group participation. The inclusion of a 4-C-methyl group into a 4-O-benzoyl galactopyranosyl donor enables nuclear magnetic resonance observation of the bicyclic ion arising from participation by the distal ester, with the methyl group influence attributed to ester ground state conformation destabilization. We show that a 4-C-methyl group also influences the side-chain conformation, enforcing a gauche,trans conformation in gluco and galactopyranosides. Competition experiments reveal that the 4-C-methyl group has only a minor influence on the rate of reaction of 4-O-benzoyl or 4-O-benzyl-galacto and glucopyranosyl donors and, consequently, that participation by the distal ester does not result in kinetic acceleration (anchimeric assistance). We demonstrate that the stereoselectivity of the 4-O-benzoyl-4-C-methyl galactopyranosyl donor depends on reaction concentration and additive (diphenyl sulfoxide) stoichiometry and hence that participation by the distal ester is a borderline phenomenon in competition with standard glycosylation mechanisms. An analysis of a recent paper affirming participation by a remote pivalate ester is presented with alternative explanations for the observed phenomena.
Collapse
Affiliation(s)
- Chennaiah Ande
- Department
of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
| | - David Crich
- Department
of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
- Department
of Chemistry, University of Georgia, 302 East Campus Road, Athens, Georgia 30602, United States
- Complex
Carbohydrate Research Center, University
of Georgia, 315 Riverbend
Road, Athens, Georgia 30602, United States
| |
Collapse
|
2
|
Li M, Li Q, Su Y, Qiao Z, Wang J, Wang P, Ren S, Song N. 4-(tert-Butyldiphenylsilyloxy)-2,2-dimethylbutanoyl: An Easily Removable Pivaloyl-Type Protecting Group with High Orthogonality. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1751-1225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractProtecting groups play multiple and vital roles during the synthesis of carbohydrates and other natural products. We herein report the installation and orthogonal cleavage, under mild conditions, of a 4-(tert-butyldiphenylsilyloxy)-2,2-dimethylbutanoyl (BDMB) group as a sterically hindered pivaloyl-type hydroxy protecting group. The compatibility of this substituent with the removal of other protecting groups is also investigated. Due to its advantageous properties, BDMB is anticipated to function as a valuable agent for masking hydroxy groups.
Collapse
Affiliation(s)
- Ming Li
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology
| | - Qishuai Li
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
| | - Yong Su
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
| | - Zhi Qiao
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
| | - Jianjun Wang
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
| | - Peng Wang
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
| | - Sumei Ren
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology
| | - Ni Song
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology
| |
Collapse
|
3
|
Hénault J, Quellier P, Mock-Joubert M, Le Narvor C, Alix A, Bonnaffé D. Regioselective Reductive Opening of Benzylidene Acetals with Dichlorophenylborane/Triethylsilane: Previously Unreported Side Reactions and How to Prevent Them. J Org Chem 2022; 87:963-973. [PMID: 35015527 DOI: 10.1021/acs.joc.1c02141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Arylidene acetals are widely used protecting groups, because of not only the high regioselectivity of their introduction but also the possibility of performing further regioselective reductive opening in the presence of a hydride donor and an acid catalyst. In this context, the Et3SiH/PhBCl2 system presents several advantages: silanes are efficient, environmentally benign, and user-friendly hydride donors, while PhBCl2 opens the way to unique regioselectivity with regard to all other Brønsted or Lewis acids used with silanes. This system has been extensively used by several groups, and we have demonstrated its high regioselectivity in the reductive opening of 4,6- and 2,4-O-p-methoxybenzylidene moieties in protected disaccharides. Surprisingly, its use on 4,6-O-benzylidene-containing substrates 1 and 2 led to unreproducible yields due to the unexpected formation of several side products. Their characterizations allowed us to identify different pitfalls potentially affecting the outcome of reductive opening of arylidenes with the Et3SiH/PhBCl2 reagent system: alkene hydroboration, azide reduction, and/or Lewis acid-promoted cleavage of the arylidene. With this knowledge, we optimized reproducible and high-yielding reaction conditions that secure and extend the scope of the Et3SiH/PhBCl2 system as a reagent for the regioselective opening of arylidenes in complex and multifunctional molecules.
Collapse
Affiliation(s)
- Jérôme Hénault
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405 Orsay, France
| | - Pauline Quellier
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405 Orsay, France
| | - Maxime Mock-Joubert
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405 Orsay, France
| | - Christine Le Narvor
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405 Orsay, France
| | - Aurélien Alix
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405 Orsay, France
| | - David Bonnaffé
- Université Paris-Saclay, CNRS, Institut de chimie moléculaire et des matériaux d'Orsay, 91405 Orsay, France
| |
Collapse
|
4
|
Dallabernardina P, Benazzi V, Laman JD, Seeberger PH, Loeffler FF. Automated glycan assembly of peptidoglycan backbone fragments. Org Biomol Chem 2021; 19:9829-9832. [PMID: 34734957 DOI: 10.1039/d1ob01987b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We report the automated glycan assembly (AGA) of different oligosaccharide fragments of the bacterial peptidoglycan (PGN) backbone. Iterative addition on a solid support of an acetyl glucosamine and a new muramic acid building block is followed by cleavage from the solid support and final deprotection providing 10 oligosaccharides up to six units.
Collapse
Affiliation(s)
- Pietro Dallabernardina
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Muehlenberg 1, 14476 Potsdam, Germany.
| | - Valentina Benazzi
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Muehlenberg 1, 14476 Potsdam, Germany. .,University of Pavia, Department of Organic Chemistry, V.le Torquato Taramelli, 10, 27100 Pavia, Italy
| | - Jon D Laman
- Department of Pathology & Medical Biology, University Medical Center Groningen, Groningen, The Netherlands
| | - Peter H Seeberger
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Muehlenberg 1, 14476 Potsdam, Germany. .,Freie Universität Berlin, Institute of Chemistry and Biochemistry, Arnimallee 22, 14195 Berlin, Germany
| | - Felix F Loeffler
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Muehlenberg 1, 14476 Potsdam, Germany.
| |
Collapse
|
5
|
Total Synthesis of Resvebassianol A, a Metabolite of Resveratrol by Beauveria bassiana. Antioxidants (Basel) 2021; 10:antiox10101509. [PMID: 34679644 PMCID: PMC8532873 DOI: 10.3390/antiox10101509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 09/10/2021] [Accepted: 09/17/2021] [Indexed: 12/05/2022] Open
Abstract
Resveratrol is a well-known dietary polyphenol because it has a variety of beneficial biological activities. The fungus Beauveria bassiana is one of the most frequently used microorganisms for the biotransformation of polyphenols. Recently, resvebassianol A (2), a glycosylated metabolite of resveratrol by B. bassiana, was isolated and structurally elucidated. It was demonstrated to exhibit antioxidant, regenerative, and anti-inflammatory activities with no cytotoxicity. Here, we report the first total synthesis of resvebassianol A, 4′-O-β-(4‴-O-methylglucopyranosyl)resveratrol (2), and its regiomer, 3-O-β-(4‴-O-methylglucopyranosyl)resveratrol (3). Key reactions include (i) the construction of a stilbene core via a novel Heck reaction of aryl halides and styrenes, and (ii) glycosylation with unnatural methylglucopyranosyl bromide. The glycosylation step was carefully optimized by varying the bases and solvents. Resveratrol metabolites 2 and 3 were obtained at 7.5% and 6.3% of the overall yield, respectively.
Collapse
|
6
|
Mezö E, Herczeg M, Demeter F, Bereczki I, Csávás M, Borbás A. Systematic Study of Regioselective Reductive Ring-Opening Reactions of 4,6- O-Halobenzylidene Acetals of Glucopyranosides. J Org Chem 2021; 86:12973-12987. [PMID: 34478619 DOI: 10.1021/acs.joc.1c01667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reductive openings of cyclic acetals are widely used in modern synthetic organic chemistry for the regioselective introduction of protecting groups. A systematic study was performed on the applicability and efficacy of various hydride donor and protic or Lewis acid reagent combinations in the reductive ring opening of glucosidic 4,6-halobenzylidene acetals bearing an ortho-, meta-, and para-chloro- or -bromo substituent on the benzene ring. Most of the reagent combinations tested cleaved the 4,6-O-halobenzylidene acetal rings at O4 or O6 efficiently and with the expected regioselectivity. The LiAlH4-AlCl3 and the BH3·THF-TMSOTf combinations produced the 4-O-halobenzyl ether/6-OH products with complete regioselectivity and high yields. The use of Me3N·BH3-AlCl3 reagent system in toluene was also effective in cleaving the acetal ring at O6 but was accompanied by Al-chelation-assisted debenzylation side reactions. The NaCNBH3-HCl and the Et3SiH-BF3·Et2O combinations were highly effective in yielding the 6-halobenzyl ether/4-OH derivatives. Et3SiH, in combination with TfOH, produced the 6-O-ether/4-OH products in rapid reactions but also triggered silylation and reductive halobenzylation as secondary transformations. Reductive opening of the 1,3-dioxane ring of pyranosidic 4,6-O-halobenzylidene acetals by the proper reagent combination was found to be an efficient method for the regioselective introduction of versatile halobenzyl protecting groups onto the pyranose ring.
Collapse
Affiliation(s)
- Erika Mezö
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary.,Research Group for Oligosaccharide Chemistry of Hungarian Academy of Sciences, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Fruzsina Demeter
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Magdolna Csávás
- MTA-DE Molecular Recognition and Interaction Research Group, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| |
Collapse
|
7
|
Maki Y, Nomura K, Okamoto R, Izumi M, Mizutani Y, Kajihara Y. Acceleration and Deceleration Factors on the Hydrolysis Reaction of 4,6- O-Benzylidene Acetal Group. J Org Chem 2020; 85:15849-15856. [PMID: 32343902 DOI: 10.1021/acs.joc.0c00395] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The benzylidene acetal group is one of the most important protecting groups not only in carbohydrate chemistry but also in general organic chemistry. In the case of 4,6-O-benzylidene glycosides, we previously found that the stereochemistry at 4-position altered the reaction rate constant for hydrolysis of benzylidene acetal group. However, a detail of the acceleration or deceleration factor was still unclear. In this work, the hydrolysis reaction of benzylidene acetal group was analyzed using the Arrhenius and Eyring plot to obtain individual parameters for glucosides (Glc), mannosides (Man), and galactosides (Gal). The Arrhenius and Eyring plot indicated that the pre-exponential factor (A) and ΔS⧧ were critical for the smallest reaction rate constant of Gal among nonacetylated substrates. On the other hand, both Ea/ΔH⧧ and A/ΔS⧧ were influential for the smallest reaction rate constant of Gal among diacetylated substrates. All parameters obtained suggested that the rate constant for hydrolysis reaction was regulated by protonation and hydration steps along with solvation. The obtained parameters support wide use of benzylidene acetal group as orthogonal protection of cis- and trans-fused bicyclic systems through the fast hydrolysis of the trans-fused benzylidene acetal group.
Collapse
Affiliation(s)
- Yuta Maki
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Kota Nomura
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Ryo Okamoto
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Masayuki Izumi
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Yasuhisa Mizutani
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Yasuhiro Kajihara
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| |
Collapse
|
8
|
Matović J, Järvinen J, Sokka IK, Imlimthan S, Raitanen JE, Montaser A, Maaheimo H, Huttunen KM, Peräniemi S, Airaksinen AJ, Sarparanta M, Johansson MP, Rautio J, Ekholm FS. Exploring the Biochemical Foundations of a Successful GLUT1-Targeting Strategy to BNCT: Chemical Synthesis and In Vitro Evaluation of the Entire Positional Isomer Library of ortho-Carboranylmethyl-Bearing Glucoconjugates. Mol Pharm 2020; 18:285-304. [PMID: 33390018 DOI: 10.1021/acs.molpharmaceut.0c00917] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Boron neutron capture therapy (BNCT) is a noninvasive binary therapeutic modality applicable to the treatment of cancers. While BNCT offers a tumor-targeting selectivity that is difficult to match by other means, the last obstacles preventing the full harness of this potential come in the form of the suboptimal boron delivery strategies presently used in the clinics. To address these challenges, we have developed delivery agents that target the glucose transporter GLUT1. Here, we present the chemical synthesis of a number of ortho-carboranylmethyl-substituted glucoconjugates and the biological assessment of all positional isomers. Altogether, the study provides protocols for the synthesis and structural characterization of such glucoconjugates and insights into their essential properties, for example, cytotoxicity, GLUT1-affinity, metabolism, and boron delivery capacity. In addition to solidifying the biochemical foundations of a successful GLUT1-targeting approach to BNCT, we identify the most promising modification sites in d-glucose, which are critical in order to further develop this strategy toward clinical use.
Collapse
Affiliation(s)
- Jelena Matović
- Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland
| | - Juulia Järvinen
- School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Iris K Sokka
- Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland
| | - Surachet Imlimthan
- Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland
| | - Jan-Erik Raitanen
- Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland
| | - Ahmed Montaser
- School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Hannu Maaheimo
- VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 VTT, Finland
| | - Kristiina M Huttunen
- School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Sirpa Peräniemi
- School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Anu J Airaksinen
- Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland.,Turku PET Centre, Department of Chemistry, University of Turku, P.O. Box 52, FI-20521 Turku, Finland
| | - Mirkka Sarparanta
- Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland
| | - Mikael P Johansson
- Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland.,Helsinki Institute of Sustainability Science, HELSUS, FI-00014 Helsinki, Finland.,CSC-IT Center for Science Ltd., P.O. Box 405, FI-02101 Espoo, Finland
| | - Jarkko Rautio
- School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Filip S Ekholm
- Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland
| |
Collapse
|
9
|
Farabi K, Manabe Y, Ichikawa H, Miyake S, Tsutsui M, Kabayama K, Yamaji T, Tanaka K, Hung SC, Fukase K. Concise and Reliable Syntheses of Glycodendrimers via Self-Activating Click Chemistry: A Robust Strategy for Mimicking Multivalent Glycan-Pathogen Interactions. J Org Chem 2020; 85:16014-16023. [PMID: 33058668 DOI: 10.1021/acs.joc.0c01547] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Individual interactions between glycans and their receptors are usually weak, although these weak interactions can combine to realize a strong interaction (multivalency). Such multivalency plays a crucial role in the recognition of host cells by pathogens. Glycodendrimers are useful materials for the reconstruction of this multivalent interaction. However, the introduction of a large number of glycans to a dendrimer core is fraught with difficulties. We herein synthesized antipathogenic glycodendrimers using the self-activating click chemistry (SACC) method developed by our group. The excellent reactivity of SACC enabled the efficient preparation of sialyl glycan and Gb3 glycan dendrimers, which exhibited strong avidity toward hemagglutinin on influenza virus and Shiga toxin B subunit produced by Escherichia coli, respectively. We demonstrated the usefulness of SACC-based glycodendrimers as antipathogenic compounds.
Collapse
Affiliation(s)
- Kindi Farabi
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Yoshiyuki Manabe
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan.,Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Hiroaki Ichikawa
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Shuto Miyake
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Masato Tsutsui
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Kazuya Kabayama
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan.,Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Toshiyuki Yamaji
- Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, Toyama 1-23-1, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Katsunori Tanaka
- Biofunctional Synthetic Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,School of Materials and Chemical Technology, Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Shang-Cheng Hung
- Genomics Research Center, Academia Sinica, 128, Section 2, Academia Road, Taipei 115, Taiwan
| | - Koichi Fukase
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan.,Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| |
Collapse
|
10
|
Gucchait A, Shit P, Misra AK. Concise synthesis of a tetrasaccharide related to the repeating unit of the cell wall O-antigen of Salmonella enterica O60. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
11
|
Shit P, Misra AK. Straightforward synthesis of the pentasaccharide repeating unit of the cell wall O-antigen of Escherichia coli O43 strain. Glycoconj J 2020; 37:647-656. [PMID: 32601769 DOI: 10.1007/s10719-020-09933-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/23/2020] [Accepted: 06/18/2020] [Indexed: 11/28/2022]
Abstract
A concise synthetic strategy has been developed for the synthesis of the pentasaccharide repeating unit of the cell wall O-antigen of Escherichia coli O43 strain involving stereoselective β-D-mannosylation and α-L-fucosylation using corresponding trichloroacetimidate intermediates and perchloric acid supported over silica (HClO4-SiO2) as glycosylation promoter. The yield and stereoselectivity of the glycosylations were very good.
Collapse
Affiliation(s)
- Pradip Shit
- Division of Molecular Medicine, Bose Institute, P-1/12, C.I.T. Scheme VII M, Kolkata, 700054, India
| | - Anup Kumar Misra
- Division of Molecular Medicine, Bose Institute, P-1/12, C.I.T. Scheme VII M, Kolkata, 700054, India.
| |
Collapse
|
12
|
Chen CW, Wang CC, Li XR, Witek H, Mong KKT. Sub-stoichiometric reductive etherification of carbohydrate substrates and one-pot protecting group manipulation. Org Biomol Chem 2020; 18:3135-3141. [PMID: 32255139 DOI: 10.1039/d0ob00252f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In this study, we report a new reductive etherification procedure for protection of carbohydrate substrates and its application for one-pot preparation of glycosyl building blocks. The reported procedure features the use of polymethylhydrosiloxane (PMHS) as a sub-stoichiometric reducing agent, which prevents the transilylation side reaction and improves the efficiency of the reductive etherification method. Application of the PMHS reductive etherification procedure for one-pot protecting group manipulation are described.
Collapse
Affiliation(s)
- Chiao Wen Chen
- Applied Chemistry Department, National Chiao Tung University, 1001, University Road, Hsinchu City, Taiwan.
| | - Ching Chi Wang
- Applied Chemistry Department, National Chiao Tung University, 1001, University Road, Hsinchu City, Taiwan.
| | - Xin Ru Li
- Applied Chemistry Department, National Chiao Tung University, 1001, University Road, Hsinchu City, Taiwan.
| | - Henryk Witek
- Applied Chemistry Department, National Chiao Tung University, 1001, University Road, Hsinchu City, Taiwan.
| | - Kwok-Kong Tony Mong
- Applied Chemistry Department, National Chiao Tung University, 1001, University Road, Hsinchu City, Taiwan.
| |
Collapse
|
13
|
Ding F, Ishiwata A, Zhou S, Zhong X, Ito Y. Unified Strategy toward Stereocontrolled Assembly of Various Glucans Based on Bimodal Glycosyl Donors. J Org Chem 2020; 85:5536-5558. [PMID: 32212661 DOI: 10.1021/acs.joc.0c00292] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Polymers of glucose, the most abundant and one of the biologically important natural products, named glucans are widely present in fungi, bacteria, mammals, and plants with various anomeric configurations and glycosidic linkages. Because of their structural diversity, the unified strategy for the assembly of pure glucans is yet to be developed. Herein, we describe a general strategy that is applicable to construction of all types of glucans by exploiting a bimodal glycosyl donor equipped with C2-o-TsNHbenzyl ether (TAB), which enables stereocontrolled synthesis of both α- and β-glycosides by switching reaction conditions.
Collapse
Affiliation(s)
- Feiqing Ding
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China.,Synthetic Cellular Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Akihiro Ishiwata
- Synthetic Cellular Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Siai Zhou
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Xuemei Zhong
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Yukishige Ito
- Synthetic Cellular Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| |
Collapse
|
14
|
Behera A, Rai D, Kulkarni SS. Total Syntheses of Conjugation-Ready Trisaccharide Repeating Units of Pseudomonas aeruginosa O11 and Staphylococcus aureus Type 5 Capsular Polysaccharide for Vaccine Development. J Am Chem Soc 2019; 142:456-467. [DOI: 10.1021/jacs.9b11309] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Archanamayee Behera
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Diksha Rai
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Suvarn S. Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| |
Collapse
|
15
|
Machida S, Mukai S, Kono R, Funato M, Saito H, Uchiyama T. Synthesis and Comparative Structure-Activity Study of Carbohydrate-Based Phenolic Compounds as α-Glucosidase Inhibitors and Antioxidants. Molecules 2019; 24:E4340. [PMID: 31783621 PMCID: PMC6930660 DOI: 10.3390/molecules24234340] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 11/20/2019] [Accepted: 11/25/2019] [Indexed: 12/18/2022] Open
Abstract
Twenty-one natural and unnatural phenolic compounds containing a carbohydrate moiety were synthesized and their structure-activity relationship (SAR) was evaluated for α-glucosidase inhibition and antioxidative activity. Varying the position of the galloyl unit on the 1,5-anhydro-d-glucitol (1,5-AG) core resulted in changes in the α-glucosidase inhibitory activity and notably, particularly strong activity was demonstrated when the galloyl unit was present at the C-2 position. Furthermore, increasing the number of the galloyl units significantly affected the α-glucosidase inhibition, and 2,3,4,6-tetra-galloyl-1,5-AG (54) and 2,3,4,6-tetra-galloyl-d-glucopyranose (61) exhibited excellent activities, which were more than 13-fold higher than the α-glucosidase inhibitory activity of acertannin (37). Moreover, a comparative structure-activity study suggested that a hemiacetal hydroxyl functionality in the carbohydrate core and a biaryl bond of the 4,6-O-hexahydroxydiphenoyl (HHDP) group, which are components of ellagitannins including tellimagrandin I, are not necessary for the α-glucosidase inhibitory activity. Lastly, the antioxidant activity increased proportionally with the number of galloyl units.
Collapse
Affiliation(s)
| | | | | | | | | | - Taketo Uchiyama
- School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi, Chiba 274-8555, Japan; (S.M.); (S.M.); (R.K.); (M.F.); (H.S.)
| |
Collapse
|
16
|
Chen JS, Sankar A, Lin YJ, Huang PH, Liao CH, Wu SS, Wu HR, Luo SY. Phosphotungstic acid as a novel acidic catalyst for carbohydrate protection and glycosylation. RSC Adv 2019; 9:33853-33862. [PMID: 35528919 PMCID: PMC9073715 DOI: 10.1039/c9ra06170c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 10/11/2019] [Indexed: 01/28/2023] Open
Abstract
This work demonstrates the utilization of phosphotungstic acid (PTA) as a novel acidic catalyst for carbohydrate reactions, such as per-O-acetylation, regioselective O-4,6 benzylidene acetal formation, regioselective O-4 ring-opening, and glycosylation. These reactions are basic and salient during the synthesis of carbohydrate-based bioactive oligomers. Phosphotungstic acid's high acidity and eco-friendly character make it a tempting alternative to corrosive homogeneous acids. The various homogenous acid catalysts were replaced by the phosphotungstic acid solely for different carbohydrate reactions. It can be widely used as a catalyst for organic reactions as it is thermally stable and easy to handle. In our work, the reactions are operated smoothly under ambient conditions; the temperature varies from 0 °C to room temperature. Good to excellent yields were obtained in all four kinds of reactions.
Collapse
Affiliation(s)
- Jyun-Siao Chen
- Department of Chemistry, National Chung Hsing University Taichung 402 Taiwan
| | - Arumugam Sankar
- Department of Chemistry, National Chung Hsing University Taichung 402 Taiwan
| | - Yi-Jyun Lin
- Department of Chemistry, National Chung Hsing University Taichung 402 Taiwan
| | - Po-Hsun Huang
- Department of Chemistry, National Chung Hsing University Taichung 402 Taiwan
| | - Chih-Hsiang Liao
- Taichung Municipal Feng Yuan Senior High School Taichung 420 Taiwan
| | - Shen-Shen Wu
- National Hsinchu Girls' Senior High School Hsinchu 300 Taiwan
| | - Hsin-Ru Wu
- Instrumentation Center, National Tsing Hua University, MOST Hsinchu 300 Taiwan
| | - Shun-Yuan Luo
- Department of Chemistry, National Chung Hsing University Taichung 402 Taiwan
| |
Collapse
|
17
|
Asano S, Tanaka HN, Imamura A, Ishida H, Ando H. p-tert-Butyl Groups Improve the Utility of Aromatic Protecting Groups in Carbohydrate Synthesis. Org Lett 2019; 21:4197-4200. [DOI: 10.1021/acs.orglett.9b01372] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sachi Asano
- The United Graduate School of Agricultural Science, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
- Department of Applied Bioorganic Chemistry, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Hide-Nori Tanaka
- Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN), Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
- The United Graduate School of Agricultural Science, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Akihiro Imamura
- The United Graduate School of Agricultural Science, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
- Department of Applied Bioorganic Chemistry, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Hideharu Ishida
- Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN), Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
- The United Graduate School of Agricultural Science, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
- Department of Applied Bioorganic Chemistry, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Hiromune Ando
- Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN), Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
- The United Graduate School of Agricultural Science, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| |
Collapse
|
18
|
Wang T, Demchenko AV. Synthesis of carbohydrate building blocks via regioselective uniform protection/deprotection strategies. Org Biomol Chem 2019; 17:4934-4950. [PMID: 31044205 DOI: 10.1039/c9ob00573k] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Discussed herein is the synthesis of partially protected carbohydrates by manipulating only one type of a protecting group for a given substrate. The first focus of this review is the uniform protection of an unprotected starting material in a way that only one (or two) hydroxyl group remains unprotected. The second focus involves regioselective partial deprotection of uniformly protected compounds in a way that only one (or two) hydroxyl group becomes liberated.
Collapse
Affiliation(s)
- Tinghua Wang
- Department of Chemistry and Biochemistry, University of Missouri - St Louis, One University Boulevard, St Louis, Missouri 63121, USA.
| | - Alexei V Demchenko
- Department of Chemistry and Biochemistry, University of Missouri - St Louis, One University Boulevard, St Louis, Missouri 63121, USA.
| |
Collapse
|
19
|
Zhang Y, Zhou S, Wang X, Zhang H, Guo Z, Gao J. A new method for α-specific glucosylation and its application to the one-pot synthesis of a branched α-glucan. Org Chem Front 2019. [DOI: 10.1039/c8qo01177j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We have developed a new and highly efficient α-specific glucosylation method based on the synergistic α-directing effects of a TolSCl/AgOTf promoter system and the steric β-shielding or the remote participation of protecting groups at the donor 6-O-position.
Collapse
Affiliation(s)
- Yanxin Zhang
- National Glycoengineering Research Center
- Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology
- Shandong University
- Qingdao
- China
| | - Shihao Zhou
- National Glycoengineering Research Center
- Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology
- Shandong University
- Qingdao
- China
| | - Xiaohan Wang
- National Glycoengineering Research Center
- Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology
- Shandong University
- Qingdao
- China
| | - Han Zhang
- National Glycoengineering Research Center
- Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology
- Shandong University
- Qingdao
- China
| | - Zhongwu Guo
- National Glycoengineering Research Center
- Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology
- Shandong University
- Qingdao
- China
| | - Jian Gao
- National Glycoengineering Research Center
- Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology
- Shandong University
- Qingdao
- China
| |
Collapse
|
20
|
Janssens J, Risseeuw MDP, Van der Eycken J, Van Calenbergh S. Regioselective Ring Opening of 1,3-Dioxane-Type Acetals in Carbohydrates. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801245] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jonas Janssens
- Laboratory for Medicinal Chemistry; Department of Pharmaceutics (FFW); Ghent University; Ottergemsesteenweg 460 9000 Ghent Belgium
- Laboratory for Organic and Bioorganic Synthesis; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 (S4) 9000 Ghent Belgium
| | - Martijn D. P. Risseeuw
- Laboratory for Medicinal Chemistry; Department of Pharmaceutics (FFW); Ghent University; Ottergemsesteenweg 460 9000 Ghent Belgium
| | - Johan Van der Eycken
- Laboratory for Organic and Bioorganic Synthesis; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 (S4) 9000 Ghent Belgium
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry; Department of Pharmaceutics (FFW); Ghent University; Ottergemsesteenweg 460 9000 Ghent Belgium
| |
Collapse
|
21
|
Kulkarni SS, Wang CC, Sabbavarapu NM, Podilapu AR, Liao PH, Hung SC. "One-Pot" Protection, Glycosylation, and Protection-Glycosylation Strategies of Carbohydrates. Chem Rev 2018; 118:8025-8104. [PMID: 29870239 DOI: 10.1021/acs.chemrev.8b00036] [Citation(s) in RCA: 202] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Carbohydrates, which are ubiquitously distributed throughout the three domains of life, play significant roles in a variety of vital biological processes. Access to unique and homogeneous carbohydrate materials is important to understand their physical properties, biological functions, and disease-related features. It is difficult to isolate carbohydrates in acceptable purity and amounts from natural sources. Therefore, complex saccharides with well-defined structures are often most conviently accessed through chemical syntheses. Two major hurdles, regioselective protection and stereoselective glycosylation, are faced by carbohydrate chemists in synthesizing these highly complicated molecules. Over the past few years, there has been a radical change in tackling these problems and speeding up the synthesis of oligosaccharides. This is largely due to the development of one-pot protection, one-pot glycosylation, and one-pot protection-glycosylation protocols and streamlined approaches to orthogonally protected building blocks, including those from rare sugars, that can be used in glycan coupling. In addition, new automated strategies for oligosaccharide syntheses have been reported not only for program-controlled assembly on solid support but also by the stepwise glycosylation in solution phase. As a result, various sugar molecules with highly complex, large structures could be successfully synthesized. To summarize these recent advances, this review describes the methodologies for one-pot protection and their one-pot glycosylation into the complex glycans and the chronological developments associated with automated syntheses of oligosaccharides.
Collapse
Affiliation(s)
- Suvarn S Kulkarni
- Department of Chemistry , Indian Institute of Technology Bombay , Mumbai 400076 , India
| | | | | | - Ananda Rao Podilapu
- Department of Chemistry , Indian Institute of Technology Bombay , Mumbai 400076 , India
| | - Pin-Hsuan Liao
- Institute of Chemistry , Academia Sinica , Taipei 115 , Taiwan
| | - Shang-Cheng Hung
- Genomics Research Center , Academia Sinica , Taipei 115 , Taiwan
| |
Collapse
|
22
|
Zakharova AN, Awan SI, Nami F, Gotfredsen CH, Madsen R, Clausen MH. Synthesis of Two Tetrasaccharide Pentenyl Glycosides Related to the Pectic Rhamnogalacturonan I Polysaccharide. Molecules 2018; 23:molecules23020327. [PMID: 29401687 PMCID: PMC6017268 DOI: 10.3390/molecules23020327] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 01/29/2018] [Accepted: 02/01/2018] [Indexed: 11/29/2022] Open
Abstract
The synthesis of two protected tetrasaccharide pentenyl glycosides with diarabinan and digalactan branching related to the pectic polysaccharide rhamnogalacturonan I is reported. The strategy relies on the coupling of N-phenyl trifluoroacetimidate disaccharide donors to a common rhamnosyl acceptor. The resulting trisaccharide thioglycosides were finally coupled to an n-pentenyl galactoside acceptor to access the two protected branched tetrasaccharides.
Collapse
Affiliation(s)
- Alexandra N Zakharova
- Center for Nanomedicine and Theranostics, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
| | - Shahid I Awan
- Center for Nanomedicine and Theranostics, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
| | - Faranak Nami
- Center for Nanomedicine and Theranostics, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
| | - Charlotte H Gotfredsen
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
| | - Robert Madsen
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
| | - Mads H Clausen
- Center for Nanomedicine and Theranostics, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, DK-2800 Kgs. Lyngby, Denmark.
| |
Collapse
|
23
|
Dohi H, Komai R, Sakai H, Komuro H, Nishida Y. Convenient use of ortho-formylphenyl thioglycoside for regioselective conjugation with glycosyl acceptors towards regioselective 1,2-cis-glycosylation. J Carbohydr Chem 2017. [DOI: 10.1080/07328303.2017.1403612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Hirofumi Dohi
- Department of Bioresource Science, Graduate School of Horticulture
- Molecular Chirality Research Center
| | - Ryota Komai
- Department of Nanoscience, Graduate School of Advanced Integration of Science, Chiba University, Chiba, Japan
| | - Hidetoshi Sakai
- Department of Nanoscience, Graduate School of Advanced Integration of Science, Chiba University, Chiba, Japan
| | - Haruka Komuro
- Department of Nanoscience, Graduate School of Advanced Integration of Science, Chiba University, Chiba, Japan
| | - Yoshihiro Nishida
- Molecular Chirality Research Center
- Department of Nanoscience, Graduate School of Advanced Integration of Science, Chiba University, Chiba, Japan
| |
Collapse
|
24
|
Petermichl M, Schobert R. Total Synthesis of the Diglycosidic Tetramic Acid Ancorinoside A. Chemistry 2017; 23:14743-14746. [DOI: 10.1002/chem.201704379] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Markus Petermichl
- Department of Chemistry; University Bayreuth; Universitaetsstr. 30 95447 Bayreuth Germany
| | - Rainer Schobert
- Department of Chemistry; University Bayreuth; Universitaetsstr. 30 95447 Bayreuth Germany
| |
Collapse
|
25
|
Xu FF, Pereira CL, Seeberger PH. 1,3-Dibromo-5,5-dimethylhydantoin as promoter for glycosylations using thioglycosides. Beilstein J Org Chem 2017; 13:1994-1998. [PMID: 29062419 PMCID: PMC5629399 DOI: 10.3762/bjoc.13.195] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 09/07/2017] [Indexed: 01/02/2023] Open
Abstract
1,3-Dibromo-5,5-dimethylhydantoin (DBDMH), an inexpensive, non-toxic and stable reagent, is a competent activator of thioglycosides for glycosidic bond formation. Excellent yields were obtained when triflic acid (TfOH) or trimethylsilyl trifluoromethanesulfonate (TMSOTf) were employed as co-promoters in solution or automated glycan assembly on solid phase.
Collapse
Affiliation(s)
- Fei-Fei Xu
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Claney L Pereira
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Vaxxilon Deutschland GmbH, Magnusstraße 11, 12489 Berlin, Germany
| | - Peter H Seeberger
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| |
Collapse
|
26
|
Abstract
Syndecan-1 chondroitin sulfate glycopeptide was synthesized for the first time using the cassette approach. The sequence of glycosylation to form the octasaccharide serine cassette was critical. The glycopeptide was successfully assembled via a 2+ (3 + 3) glycosylation strategy followed by peptide chain elongation.
Collapse
Affiliation(s)
- Sherif Ramadan
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
- Chemistry Department, Faculty of Science, Benha University, Benha, Qaliobiya 13518, Egypt
| | - Weizhun Yang
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Zeren Zhang
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Xuefei Huang
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
- Department of Biomedical Engineering, Michigan State University, East Lansing, Michigan 48824, United States
- The Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, Michigan 48824, United States
| |
Collapse
|
27
|
Synthesis of an allergy inducing tetrasaccharide “4P-X”. Carbohydr Res 2017; 439:44-49. [DOI: 10.1016/j.carres.2016.11.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 11/23/2016] [Accepted: 11/23/2016] [Indexed: 12/26/2022]
|
28
|
Andersen MC, Boos I, Marcus SE, Kračun SK, Rydahl MG, Willats WG, Knox JP, Clausen MH. Characterization of the LM5 pectic galactan epitope with synthetic analogues of β-1,4-d-galactotetraose. Carbohydr Res 2016; 436:36-40. [DOI: 10.1016/j.carres.2016.10.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 10/26/2016] [Accepted: 10/27/2016] [Indexed: 10/20/2022]
|
29
|
Highly regioselective homoallyl alcohol protection through ring opening of p-methoxybenzylidene acetal. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.10.068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
30
|
Andersen MCF, Kračun SK, Rydahl MG, Willats WGT, Clausen MH. Synthesis of β-1,4-Linked Galactan Side-Chains of Rhamnogalacturonan I. Chemistry 2016; 22:11543-8. [PMID: 27305141 DOI: 10.1002/chem.201602197] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Indexed: 11/05/2022]
Abstract
The synthesis of linear- and (1→6)-branched β-(1→4)-d-galactans, side-chains of the pectic polysaccharide rhamnogalacturonan I is described. The strategy relies on iterative couplings of n-pentenyl disaccharides followed by a late stage glycosylation of a common hexasaccharide core. Reaction with a covalent linker and immobilization on N-hydroxysuccinimide (NHS)-modified glass surfaces allows the generation of carbohydrate microarrays. The glycan arrays enable the study of protein-carbohydrate interactions in a high-throughput fashion, demonstrated herein with binding studies of mAbs and a CBM.
Collapse
Affiliation(s)
- Mathias C F Andersen
- Center for Nanomedicine and Theranostics, Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 207, 2800 Kgs., Lyngby, Denmark
| | - Stjepan K Kračun
- Department of Plant and Environmental Sciences, Thorvaldsensvej 40, Frederiksberg C, 1871, Denmark
| | - Maja G Rydahl
- Department of Plant and Environmental Sciences, Thorvaldsensvej 40, Frederiksberg C, 1871, Denmark
| | - William G T Willats
- Department of Plant and Environmental Sciences, Thorvaldsensvej 40, Frederiksberg C, 1871, Denmark.,School of Agriculture, Food and Rural Development, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Mads H Clausen
- Center for Nanomedicine and Theranostics, Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 207, 2800 Kgs., Lyngby, Denmark.
| |
Collapse
|
31
|
An efficient synthesis and regioselective hydrogenolysis of dioxolane-type of carbohydrates. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
32
|
Shibuya M, Abe M, Fujita S, Yamamoto Y. Reagents for diverse iodosilane-mediated transformations. Org Biomol Chem 2016; 14:5322-8. [DOI: 10.1039/c6ob00900j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PhSiH3–I2 and PhSiH3–NIS generate PhSiH2I as a possible active species and cause diverse transformations.
Collapse
Affiliation(s)
- Masatoshi Shibuya
- Department of Basic Medicinal Sciences
- Graduate School of Pharmaceutical Sciences
- Nagoya University
- Nagoya 464-8601
- Japan
| | - Masanori Abe
- Department of Basic Medicinal Sciences
- Graduate School of Pharmaceutical Sciences
- Nagoya University
- Nagoya 464-8601
- Japan
| | - Shoji Fujita
- Department of Basic Medicinal Sciences
- Graduate School of Pharmaceutical Sciences
- Nagoya University
- Nagoya 464-8601
- Japan
| | - Yoshihiko Yamamoto
- Department of Basic Medicinal Sciences
- Graduate School of Pharmaceutical Sciences
- Nagoya University
- Nagoya 464-8601
- Japan
| |
Collapse
|
33
|
Herczeg M, Demeter F, Mező E, Pap M, Borbás A. Simultaneous Application of Arylmethylene Acetal and Butane Diacetal Groups for Protection of Hexopyranosides: Synthesis and Chemoselective Ring-Opening Reactions. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500732] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
34
|
Sutter M, Silva ED, Duguet N, Raoul Y, Métay E, Lemaire M. Glycerol Ether Synthesis: A Bench Test for Green Chemistry Concepts and Technologies. Chem Rev 2015. [PMID: 26196761 DOI: 10.1021/cr5004002] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Marc Sutter
- Equipe Catalyse Synthèse Environnement, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR-CNRS 5246, Université de Lyon, Université Claude Bernard-Lyon 1, Bâtiment Curien , 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
| | - Eric Da Silva
- Equipe Catalyse Synthèse Environnement, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR-CNRS 5246, Université de Lyon, Université Claude Bernard-Lyon 1, Bâtiment Curien , 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
| | - Nicolas Duguet
- Equipe Catalyse Synthèse Environnement, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR-CNRS 5246, Université de Lyon, Université Claude Bernard-Lyon 1, Bâtiment Curien , 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
| | - Yann Raoul
- Organisation Nationale Interprofessionnelle des Oléagineux, 11 rue de Monceau, CS 60003, 75378 Paris Cedex 08, France
| | - Estelle Métay
- Equipe Catalyse Synthèse Environnement, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR-CNRS 5246, Université de Lyon, Université Claude Bernard-Lyon 1, Bâtiment Curien , 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
| | - Marc Lemaire
- Equipe Catalyse Synthèse Environnement, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR-CNRS 5246, Université de Lyon, Université Claude Bernard-Lyon 1, Bâtiment Curien , 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
| |
Collapse
|
35
|
Roy R, Palanivel AK, Mallick A, Vankar YD. AuCl3- and AuCl3-Phenylacetylene-Catalyzed Glycosylations by Using Glycosyl Trichloroacetimidates. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500137] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
36
|
Gillard RM, Sperry J. Synthesis of 2-(3'-Indolyl)tetrahydrofurans by oxidative cycloetherification. J Org Chem 2015; 80:2900-6. [PMID: 25679438 DOI: 10.1021/acs.joc.5b00112] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of 2-(3'-indolyl)tetrahydrofurans have been prepared by a DDQ-mediated oxidative cycloetherification process. Performing the reaction under biphasic conditions prevents reductive cleavage of the products by the spent oxidant (DDQH2).
Collapse
Affiliation(s)
- Rachel M Gillard
- School of Chemical Sciences, University of Auckland , 23 Symonds St., Auckland, 1010, New Zealand
| | | |
Collapse
|
37
|
Synthesis and characterization of four novel 2-(trimethylsilyl)ethyl glycosides. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-013-1257-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
38
|
Despras G, Alix A, Urban D, Vauzeilles B, Beau JM. From chitin to bioactive chitooligosaccharides and conjugates: access to lipochitooligosaccharides and the TMG-chitotriomycin. Angew Chem Int Ed Engl 2014; 53:11912-6. [PMID: 25212734 DOI: 10.1002/anie.201406802] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Indexed: 01/28/2023]
Abstract
The direct and chemoselective N-transacylation of peracetylated chitooligosaccharides (COSs), readily obtained from chitin, to give per-N-trifluoroacetyl derivatives offers an attractive route to size-defined COSs and derived glycoconjugates. It involves the use of various acceptor building blocks and trifluoromethyl oxazoline dimer donors prepared with efficiency and highly reactive in 1,2-trans glycosylation reactions. This method was applied to the preparation of the important symbiotic glycolipids which are highly active on plants and to the TMG-chitotriomycin, a potent and specific inhibitor of insect, fungal, and bacterial N-acetylglucosaminidases.
Collapse
Affiliation(s)
- Guillaume Despras
- Université Paris-Sud and CNRS, Laboratoire de Synthèse de Biomolécules, Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR 8182, 91405 Orsay (France)
| | | | | | | | | |
Collapse
|
39
|
Despras G, Alix A, Urban D, Vauzeilles B, Beau JM. From Chitin to Bioactive Chitooligosaccharides and Conjugates: Access to Lipochitooligosaccharides and the TMG-chitotriomycin. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406802] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
40
|
Catalytic enantioselective diversity-oriented synthesis of a small library of polyhydroxylated pyrans inspired from thiomarinol antibiotics. Mol Divers 2014; 18:701-19. [DOI: 10.1007/s11030-014-9542-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Accepted: 07/30/2014] [Indexed: 10/24/2022]
|
41
|
Roy R, Rajasekaran P, Mallick A, Vankar YD. Gold(III) Chloride and Phenylacetylene: A Catalyst System for the Ferrier Rearrangement, andO-Glycosylation of 1-O-Acetyl Sugars as Glycosyl Donors. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402606] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
42
|
Dara S, Saikam V, Yadav M, Singh PP, Vishwakarma RA. HClO4–silica-catalysed regioselective opening of benzylidene acetals and its application towards regioselective HO-4 glycosylation of benzylidene acetals in one-pot. Carbohydr Res 2014; 391:93-6. [DOI: 10.1016/j.carres.2014.01.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 01/11/2014] [Accepted: 01/13/2014] [Indexed: 12/01/2022]
|
43
|
Qu H, Sun W, Zhang Y, Sollogoub M, Zhang Y. Synthesis and NMR elucidation of four novel 2-(trimethylsilyl)ethyl glycosides. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-013-1060-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
44
|
Sanapala SR, Kulkarni SS. Chemical synthesis of asparagine-linked archaeal N-glycan from Methanothermus fervidus. Chemistry 2014; 20:3578-83. [PMID: 24616211 DOI: 10.1002/chem.201304950] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 02/02/2014] [Indexed: 12/12/2022]
Abstract
Several N-linked glycoproteins have been identified in archaea and there is growing evidence that the N-glycan is involved in survival and functioning of archaea in extreme conditions. Chemical synthesis of the archaeal N-glycans represents a crucial step towards understanding the putative function of protein glycosylation in archaea. Herein the first total synthesis of the archaeal L-asparagine linked hexasaccharide from Methanothermus fervidus is reported using a highly convergent [3+3] glycosylation approach in high overall yields. The synthesis relies on efficient preparation of regioselectively protected thioglycoside building blocks for orthogonal glycosylations and late stage N-aspartylation.
Collapse
Affiliation(s)
- Someswara Rao Sanapala
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 (India)
| | | |
Collapse
|
45
|
Despras G, Urban D, Vauzeilles B, Beau JM. One-pot synthesis ofd-glucosamine and chitobiosyl building blocks catalyzed by triflic acid on molecular sieves. Chem Commun (Camb) 2014; 50:1067-9. [DOI: 10.1039/c3cc48078j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
46
|
Mulani SK, Guh JH, Mong KKT. A general synthetic strategy and the anti-proliferation properties on prostate cancer cell lines for natural phenylethanoid glycosides. Org Biomol Chem 2014; 12:2926-37. [DOI: 10.1039/c3ob42503g] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
47
|
Abstract
MECA-79 antigen is a sulfated mucin type core-1 extended O-glycan which is a potential anti-inflammatory agent. Herein we report a total synthesis of MECA-79 via a convergent [2 + 2] glycosylation routethrough the intermediacy of Tn and TF antigens.
Collapse
Affiliation(s)
| | - Madhu Emmadi
- Department of Chemistry
- Indian Institute of Technology-Bombay
- Mumbai, India
| | - Suvarn S. Kulkarni
- Department of Chemistry
- Indian Institute of Technology-Bombay
- Mumbai, India
| |
Collapse
|
48
|
Lu D, Hu Y, He X, Sollogoub M, Zhang Y. Total synthesis of a sialyl Lewis(x) derivative for the diagnosis of cancer. Carbohydr Res 2013; 383:89-96. [PMID: 24333940 DOI: 10.1016/j.carres.2013.11.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 11/14/2013] [Accepted: 11/16/2013] [Indexed: 01/01/2023]
Abstract
The total synthesis of aminoethyl glycoside of sialyl Lewis(x) (sLe(x)) is described. A galactose donor was condensed with a diol of glucosamine to afford regioselectively a β1,4 linked disaccharide, which was further stereoselectively fucosylated to provide a protected Lewis(x) trisaccharide. After chemical modification, the trisaccharide was sialylated to give regio- and stereoselectively an azidoethyl glycoside of sLe(x). Finally, deprotection and azide reduction afforded the target compound. This compound will be coupled with protein and then be used to conduct further preclinical studies for the diagnosis of cancer.
Collapse
Affiliation(s)
- Dan Lu
- Institut Parisien de Chimie Moléculaire, CNRS UMR 7201, Université Pierre et Marie Curie-Paris 6, 4 Place Jussieu, 75005 Paris, France; ZJU-ENS Joint Laboratory of Medicinal Chemistry, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yongzhou Hu
- ZJU-ENS Joint Laboratory of Medicinal Chemistry, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xianran He
- Institute for Interdisciplinary Research, Jianghan University, Wuhan Economic and Technological Development Zone, Wuhan 430056, China
| | - Matthieu Sollogoub
- Institut Parisien de Chimie Moléculaire, CNRS UMR 7201, Université Pierre et Marie Curie-Paris 6, 4 Place Jussieu, 75005 Paris, France
| | - Yongmin Zhang
- Institut Parisien de Chimie Moléculaire, CNRS UMR 7201, Université Pierre et Marie Curie-Paris 6, 4 Place Jussieu, 75005 Paris, France; ZJU-ENS Joint Laboratory of Medicinal Chemistry, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; Institute for Interdisciplinary Research, Jianghan University, Wuhan Economic and Technological Development Zone, Wuhan 430056, China.
| |
Collapse
|
49
|
Shie CR, Tzeng ZH, Wang CC, Hung SC. Metal Trifluoromethanesulfonate-Catalyzed Regioselective Reductive Ring Opening of Benzylidene Acetals. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200900076] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
50
|
Ohara K, Lin CC, Yang PJ, Hung WT, Yang WB, Cheng TJR, Fang JM, Wong CH. Synthesis and Bioactivity of β-(1→4)-Linked Oligomannoses and Partially Acetylated Derivatives. J Org Chem 2013; 78:6390-411. [DOI: 10.1021/jo4005266] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keiichiro Ohara
- The Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Chih-Chien Lin
- The Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Pei-Jung Yang
- The Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Wei-Ting Hung
- The Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Wen-Bin Yang
- The Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
| | | | - Jim-Min Fang
- The Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Chi-Huey Wong
- The Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
| |
Collapse
|