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Chen S, Wei F, Cheng X, Luo Y, Meng F, Zhang Y, Huang W, Lv J, Pan H, Wu Q, Zhao G. Regioselective Deacetylation of Peracetylated Deoxy- C-glycopyranosides by Boron Trichloride (BCl 3). J Org Chem 2024; 89:4802-4817. [PMID: 38477972 DOI: 10.1021/acs.joc.4c00026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
A general approach for regioselective deacetylation at sugar 3-OH of peracetylated 6-deoxy-C-glucopyranosides mediated by BCl3 was developed. The approach could be extended to other sugar-derived 6-deoxy-C-glycopyranosides, such as those derived from mannose, galactose, and rhamnose, with deacetylation occurring at varied sugar hydroxyl groups, and further extended to 4-deoxy-C-glucopyranosides with deacetylation occurring at sugar 3-OH. The approach would enable access to synthetically challenging carbohydrate derivatives. A possible mechanism of the regioselectivity was proposed.
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Affiliation(s)
- Shuangyuan Chen
- College of Pharmacy, Guizhou Medical University, Guiyang 561113, China
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
| | - Feifei Wei
- College of Pharmacy, Guizhou Medical University, Guiyang 561113, China
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
| | - Xinqiang Cheng
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
| | - Ying Luo
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Fancui Meng
- National Key Laboratory of Druggability Evaluation and Systematic Translational Medicine, Tianjin Institute of Pharmaceutical Research, Tianjin 300301, China
| | - Yuanwen Zhang
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
- School of Chinese Medicinal Resource, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Wenqian Huang
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Lv
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong Pan
- School of Intelligent Medical Technology, Dazhou Vocational and Technical College, Dazhou 635001, China
| | - Qingqing Wu
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
| | - Guilong Zhao
- College of Pharmacy, Guizhou Medical University, Guiyang 561113, China
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan 528400, China
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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2
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Kang H, Torruellas C, Kozlowski MC. Asymmetric Total Synthesis of Chaetoglobin A. J Org Chem 2023; 88:6691-6703. [PMID: 37195069 PMCID: PMC10411588 DOI: 10.1021/acs.joc.3c00002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
An asymmetric total synthesis of chaetoglobin A was achieved. Atroposelective oxidative coupling of a phenol incorporating all but one carbon of the final product was used as a key step to generate axial chirality. The stereochemical outcome of the catalytic oxidative phenolic with the highly substituted phenol used herein was found to be opposite that of the simpler congeners reported previously, providing a cautionary tale about extrapolating asymmetric processes from simple to more complex substrates. Optimization of the postphenolic coupling steps including formylation, oxidative dearomatization, and selective deprotection steps are outlined. The tertiary acetates of chaetoglobin A were exceptionally labile due to activation by the adjacent keto groups, which complicated each of these steps. In contrast, the final oxygen to nitrogen exchange proceeded readily and the spectroscopic data from the synthetic material matches that of the isolated natural product in all respects.
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Affiliation(s)
- Houng Kang
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Chemistry Education, Chungbuk National University, Cheongju, Chungbuk 28644, South Korea
| | - Carilyn Torruellas
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Marisa C. Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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3
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Gurawa A, Kumar M, Kashyap S. Me 3SI-promoted chemoselective deacetylation: a general and mild protocol. RSC Adv 2021; 11:19310-19315. [PMID: 35478635 PMCID: PMC9033574 DOI: 10.1039/d1ra03209g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 05/16/2021] [Indexed: 11/21/2022] Open
Abstract
A catalytic and practical approach for the selective removal of acetyl groups using various substrates bearing orthogonal moieties has been demonstrated under ambient conditions.
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Affiliation(s)
- Aakanksha Gurawa
- Carbohydrate Chemistry Research Laboratory (CCRL)
- Department of Chemistry
- Malaviya National Institute of Technology Jaipur, (MNIT)
- Jaipur-302017
- India
| | - Manoj Kumar
- Carbohydrate Chemistry Research Laboratory (CCRL)
- Department of Chemistry
- Malaviya National Institute of Technology Jaipur, (MNIT)
- Jaipur-302017
- India
| | - Sudhir Kashyap
- Carbohydrate Chemistry Research Laboratory (CCRL)
- Department of Chemistry
- Malaviya National Institute of Technology Jaipur, (MNIT)
- Jaipur-302017
- India
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4
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Hattie M, Stubbs KA. Generalising a Simple Methodology for the Regioselective Anomeric Deacetylation of Carbohydrates. ChemistrySelect 2020. [DOI: 10.1002/slct.201904343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mitchell Hattie
- School of Molecular Sciences University of Western Australia 35 Stirling Highway Crawley WA 6009 Australia
| | - Keith A. Stubbs
- School of Molecular Sciences University of Western Australia 35 Stirling Highway Crawley WA 6009 Australia
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5
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Gurawa A, Kumar M, Rao DS, Kashyap S. KMnO 4-catalyzed chemoselective deprotection of acetate and controllable deacetylation–oxidation in one pot. NEW J CHEM 2020. [DOI: 10.1039/d0nj04321d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A highly chemoselective and facile protocol for deacetylation of a diverse range of substrates tolerating several sensitive functionalities was accomplished under environmentally friendly conditions.
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Affiliation(s)
- Aakanksha Gurawa
- Carbohydrate Chemistry Research Laboratory (CCRL)
- Department of Chemistry
- Malaviya National Institute of Technology
- Jaipur-302017
- India
| | - Manoj Kumar
- Carbohydrate Chemistry Research Laboratory (CCRL)
- Department of Chemistry
- Malaviya National Institute of Technology
- Jaipur-302017
- India
| | - Dodla S. Rao
- Carbohydrate Chemistry Research Laboratory (CCRL)
- Department of Chemistry
- Malaviya National Institute of Technology
- Jaipur-302017
- India
| | - Sudhir Kashyap
- Carbohydrate Chemistry Research Laboratory (CCRL)
- Department of Chemistry
- Malaviya National Institute of Technology
- Jaipur-302017
- India
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6
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Kang H, Torruellas C, Liu J, Kozlowski MC. Total Synthesis of Chaetoglobin A via Catalytic, Atroposelective Oxidative Phenol Coupling. Org Lett 2018; 20:5554-5558. [PMID: 30207731 DOI: 10.1021/acs.orglett.8b02183] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first total synthesis of chaetoglobin A (1), which features a chiral axis between two identical highly oxygenated bicyclic cores, was successfully completed in 12 steps from 2,6-dimethoxytoluene. Vanadium-catalyzed oxidative phenol coupling, as a key step, enabled generation of the axial chirality.
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Affiliation(s)
- Houng Kang
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Carilyn Torruellas
- U.S. Army Edgewood Chemical Biological Center , RDCB-DRC-P/Building E3400 , Aberdeen Proving Ground , Maryland 21010-5424 , United States
| | - Jinchu Liu
- Department of Process Research and Development , Merck Research Laboratories , Rahway , New Jersey 07065 , United States
| | - Marisa C Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
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7
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Wang R, Chen JZ, Zheng XA, Kong R, Gong SS, Sun Q. Hafnium(IV) triflate as a potent catalyst for selective 1-O-deacetylation of peracetylated saccharides. Carbohydr Res 2018; 455:114-118. [DOI: 10.1016/j.carres.2017.11.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 11/23/2017] [Accepted: 11/23/2017] [Indexed: 10/18/2022]
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8
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Yan YL, Guo JR, Liang CF. Sequential Dy(OTf) 3 -Catalyzed Solvent-Free Per-O-Acetylation and Regioselective Anomeric De-O-Acetylation of Carbohydrates. Chem Asian J 2017; 12:2471-2479. [PMID: 28688169 DOI: 10.1002/asia.201700867] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 07/04/2017] [Indexed: 11/06/2022]
Abstract
Dysprosium(III) trifluoromethanesulfonate-catalyzed per-O-acetylation and regioselective anomeric de-O-acetylation of carbohydrates can be tuned by adjusting the reaction medium. In this study, the per-O-acetylation of unprotected sugars by using a near-stoichiometric amount of acetic anhydride under solvent-free conditions resulted in the exclusive formation of acetylated saccharides as anomeric mixtures, whereas anomeric de-O-acetylation in methanol resulted in a moderate-to-excellent yield. Reactions with various unprotected monosaccharides or disaccharides followed by a semi-one-pot sequential conversion into the corresponding acetylated glycosyl hemiacetal also resulted in high yields. Furthermore, the obtained hemiacetals could be successfully transformed into trichloroimidates after Dy(OTf)3 -catalyzed glycosylation.
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Affiliation(s)
- Yi-Ling Yan
- Department of Chemistry, National Chung Hsing University, 145 Xingda Rd., South Dist., Taichung City, 402, Taiwan
| | - Jiun-Rung Guo
- Department of Chemistry, National Chung Hsing University, 145 Xingda Rd., South Dist., Taichung City, 402, Taiwan
| | - Chien-Fu Liang
- Department of Chemistry, National Chung Hsing University, 145 Xingda Rd., South Dist., Taichung City, 402, Taiwan
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9
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Thorsheim K, Siegbahn A, Johnsson RE, Stålbrand H, Manner S, Widmalm G, Ellervik U. Chemistry of xylopyranosides. Carbohydr Res 2015; 418:65-88. [PMID: 26580709 DOI: 10.1016/j.carres.2015.10.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 10/09/2015] [Accepted: 10/10/2015] [Indexed: 12/22/2022]
Abstract
Xylose is one of the few monosaccharidic building blocks that are used by mammalian cells. In comparison with other monosaccharides, xylose is rather unusual and, so far, only found in two different mammalian structures, i.e. in the Notch receptor and as the linker between protein and glycosaminoglycan (GAG) chains in proteoglycans. Interestingly, simple soluble xylopyranosides can not only initiate the biosynthesis of soluble GAG chains but also function as inhibitors of important enzymes in the biosynthesis of proteoglycans. Furthermore, xylose is a major constituent of hemicellulosic xylans and thus one of the most abundant carbohydrates on Earth. Altogether, this has spurred a strong interest in xylose chemistry. The scope of this review is to describe synthesis of xylopyranosyl donors, as well as protective group chemistry, modifications, and conformational analysis of xylose.
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Affiliation(s)
- Karin Thorsheim
- Centre for Analysis and Synthesis, Centre for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Anna Siegbahn
- Centre for Analysis and Synthesis, Centre for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Richard E Johnsson
- Centre for Analysis and Synthesis, Centre for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Henrik Stålbrand
- Centre for Molecular Protein Science, Centre for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Sophie Manner
- Centre for Analysis and Synthesis, Centre for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Göran Widmalm
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Ulf Ellervik
- Centre for Analysis and Synthesis, Centre for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
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10
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One-pot synthesis of per-O-acetylated hemiacetals from free sugars in a deep eutectic solvent. Carbohydr Res 2015; 416:21-3. [DOI: 10.1016/j.carres.2015.08.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 07/18/2015] [Accepted: 08/12/2015] [Indexed: 11/18/2022]
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11
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Ueda T, Hayashi M, Ikeuchi Y, Nakajima T, Numagami E, Kobayashi S. Synthesis of an α-Amylase Inhibitor: Highly Stereoselective Glycosidation and Regioselective Manipulations of Hydroxyl Groups in Carbohydrate Derivatives. Org Process Res Dev 2014. [DOI: 10.1021/op500306p] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Tsuyoshi Ueda
- Process Technology Research
Laboratories, Pharmaceutical Technology Division, Daiichi Sankyo Co., Ltd., 1-12-1 Shinomiya, Hiratsuka, Kanagawa 254-0014, Japan
| | - Masaki Hayashi
- Process Technology Research
Laboratories, Pharmaceutical Technology Division, Daiichi Sankyo Co., Ltd., 1-12-1 Shinomiya, Hiratsuka, Kanagawa 254-0014, Japan
| | - Yutaka Ikeuchi
- Process Technology Research
Laboratories, Pharmaceutical Technology Division, Daiichi Sankyo Co., Ltd., 1-12-1 Shinomiya, Hiratsuka, Kanagawa 254-0014, Japan
| | - Takumi Nakajima
- Process Technology Research
Laboratories, Pharmaceutical Technology Division, Daiichi Sankyo Co., Ltd., 1-12-1 Shinomiya, Hiratsuka, Kanagawa 254-0014, Japan
| | - Eiji Numagami
- Process Technology Research
Laboratories, Pharmaceutical Technology Division, Daiichi Sankyo Co., Ltd., 1-12-1 Shinomiya, Hiratsuka, Kanagawa 254-0014, Japan
| | - Satoshi Kobayashi
- Process Technology Research
Laboratories, Pharmaceutical Technology Division, Daiichi Sankyo Co., Ltd., 1-12-1 Shinomiya, Hiratsuka, Kanagawa 254-0014, Japan
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12
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Zhang Q, Raheem KS, Botting NP, Slawin AM, Kay CD, O'Hagan D. Flavonoid metabolism: the synthesis of phenolic glucuronides and sulfates as candidate metabolites for bioactivity studies of dietary flavonoids. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.100] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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13
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Hayes JA, Eccles KS, Lawrence SE, Moynihan HA. Preparation and characterisation of solid state forms of paracetamol-O-glucuronide. Carbohydr Res 2012; 349:108-12. [DOI: 10.1016/j.carres.2011.12.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Revised: 12/16/2011] [Accepted: 12/20/2011] [Indexed: 11/25/2022]
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14
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Bunnelle WH. Reagents for Stereoselective Preparation of N-Carbamyl β-d-Glucuronides. J Org Chem 2011; 76:5429-32. [DOI: 10.1021/jo200238d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- William H. Bunnelle
- Abbott Laboratories, Neuroscience Research, Building AP9A, Department R4MN, 100 Abbott Park Road, Abbott Park, Illinois 60064-6117, United States
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15
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Cavalluzzi MM, Lentini G, Lovece A, Bruno C, Catalano A, Carocci A, Franchini C. First synthesis and full characterization of mexiletine N-carbonyloxy β-d-glucuronide. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.07.150] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Raab T, Barron D, Vera FA, Crespy V, Oliveira M, Williamson G. Catechin glucosides: occurrence, synthesis, and stability. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:2138-2149. [PMID: 20112905 DOI: 10.1021/jf9034095] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Catechins are flavonoids with suggested health benefits, but are unstable during storage, processing and, after ingestion, during gut transit. We hypothesized that catechin glucosides, which occur in various plants, could be more stable than unsubstituted catechin, and additionally be deglucosylated in the gut and so act to deliver catechin in a form able to be absorbed. (+)-Catechin O-glucosides from various sources have been used in the course of this investigation. (+)-Catechin 3'-O-beta-D-glucopyranoside (C3'G), (+)-catechin 5-O-beta-D-glucopyranoside (C5G), and (+)-catechin 3-O-beta-D-glucopyranoside (C3G) were chemically synthesized. (+)-Catechin 4'-O-beta-D-glucopyranoside (C4'G) and (+)-catechin 7-O-beta-D-glucopyranoside (C7G) were prepared enzymically using preparations from lentil and barley. In general, but with some exceptions, the (+)-catechin glucosides were more stable between pH 4 and 8 than (+)-catechin, with C3'G exhibiting greatest stability. The intestinal metabolism of (+)-catechin and all (+)-catechin glucosides in the gut was determined by perfusion of rat intestine in vivo. C3'G and C5G were extensively deglycosylated in the gut, and C3'G showed greatest apparent "absorption" as calculated by the difference between effluent and influent. The results show the potential of catechin glucosides, especially C3'G, as more stable prescursors of catechin.
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Affiliation(s)
- Thomas Raab
- Nestle Research Center, Vers chez les Blanc, 1000 Lausanne 26, Switzerland
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17
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Fumeaux R, Menozzi-Smarrito C, Stalmach A, Munari C, Kraehenbuehl K, Steiling H, Crozier A, Williamson G, Barron D. First synthesis, characterization, and evidence for the presence of hydroxycinnamic acid sulfate and glucuronide conjugates in human biological fluids as a result of coffee consumption. Org Biomol Chem 2010; 8:5199-211. [DOI: 10.1039/c0ob00137f] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Wei G, Zhang L, Cai C, Cheng S, Du Y. Selective cleavage of sugar anomeric O-acyl groups using FeCl3·6H2O. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.07.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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19
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Tran AT, Deydier S, Bonnaffé D, Le Narvor C. Regioselective green anomeric deacetylation catalyzed by lanthanide triflates. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.01.106] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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21
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El Alaoui A, Schmidt F, Monneret C, Florent JC. Protecting Groups for Glucuronic Acid: Application to the Synthesis of New Paclitaxel (Taxol) Derivatives. J Org Chem 2006; 71:9628-36. [PMID: 17168579 DOI: 10.1021/jo0612675] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To prepare two new glucuronide conjugates, allyl ester and allyl carbonates were used as protecting groups of the glucuronic moiety. In this way, an aniline glycosyl carbamate spacer linked to the 2'-OH of paclitaxel was obtained. By using palladium chemistry, an efficient one-step removal of all the allyl groups at the end of the synthesis afforded the desired compounds in good yields.
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Affiliation(s)
- Abdessamad El Alaoui
- UMR 176 CNRS/Institut Curie, Centre de Recherche, 26 rue d'Ulm, 75248 Paris Cedex 05, France
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22
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Dubber M, Sperling O, Lindhorst TK. Oligomannoside mimetics by glycosylation of 'octopus glycosides' and their investigation as inhibitors of type 1 fimbriae-mediated adhesion of Escherichia coli. Org Biomol Chem 2006; 4:3901-12. [PMID: 17047869 DOI: 10.1039/b610741a] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The glycocalyx of eukaryotic cells is composed of glycoconjugates, which carry highly complex oligosaccharide portions. To elucidate the biological role and function of the glycocalyx in cell-cell communication and cellular adhesion processes, glycomimetics have become targets of glycosciences, which resemble the composition and structural complexity of the glycocalyx constituents. Here, we report about the synthesis of a class of oligosaccharide mimetics of a high-mannose type, which were obtained by mannosylation of spacered mono- and oligosaccharide cores. These carbohydrate-centered cluster mannosides have been targeted as inhibitors of mannose-specific bacterial adhesion, which is mediated by so-called type 1 fimbriae. Their inhibitory potencies were measured by ELISA and compared to methyl mannoside as well as to a series of mannobiosides, and finally to the polysaccharide mannan. The obtained results suggest a new interpretation of the mechanisms of bacterial adhesion according to a macromolecular rather than a multivalency effect.
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Affiliation(s)
- Michael Dubber
- Otto Diels Institute of Organic Chemistry, Christiana Albertina University of Kiel, Otto-Hahn-Platz 4, 24098, Kiel, Germany
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23
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Engstrom KM, Daanen JF, Wagaw S, Stewart AO. Gram Scale Synthesis of the Glucuronide Metabolite of ABT-724. J Org Chem 2006; 71:8378-83. [PMID: 17064008 DOI: 10.1021/jo0611972] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A gram scale synthesis of the glucuronide metabolite of ABT-724 is reported. Glycosidic coupling between a trichloroacetimidate glucuronyl donor and a Cbz-protected hydroxypyridylpiperazine glycosyl acceptor is the key step in the synthesis, since attempts to directly glucuronidate the aglycon, aglycon derivatives, and other truncated glycosyl acceptors were unsuccessful. The route was used to produce 2.1 g of metabolite in eight steps from 2-chloro-5-hydroxypyridine in 21% overall yield.
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Affiliation(s)
- Kenneth M Engstrom
- Global Pharmaceutical R&D, Process Research & Development, Abbott Laboratories, 1401 Sheridan Road, North Chicago, Illinois 60064-4000, USA.
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24
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Tiwari P, Misra AK. Selective removal of anomeric O-acetate groups in carbohydrates using HClO4–SiO2. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.03.050] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Ren B, Cai L, Zhang LR, Yang ZJ, Zhang LH. Selective deacetylation using iodine–methanol reagent in fully acetylated nucleosides. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.09.142] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Nakajima R, Ono M, Aiso S, Akita H. Synthesis of Methyl 1-O-(4-Hydroxymethamphetaminyl)-.ALPHA.-D-glucopyranouronate. Chem Pharm Bull (Tokyo) 2005; 53:684-7. [PMID: 15930783 DOI: 10.1248/cpb.53.684] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
For the purpose of the direct characterization of the intact conjugated form in the urine of a methamphetamine (MA) abuser, 4-hydroxymethamphetamine (4-OHMA) glucuronate, corresponding to one of the metabolites of MA, was synthesized from the commercially available methyl 4-hydroxyphenylacetate.
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Affiliation(s)
- Rika Nakajima
- School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
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27
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Zhao J, Zhou X, Santos AM, Herdtweck E, Romão CC, Kühn FE. Molybdenum(vi) cis-dioxo complexes bearing sugar derived chiral Schiff-base ligands: synthesis, characterization, and catalytic applications. Dalton Trans 2003. [DOI: 10.1039/b306039j] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Pope SAS, Burtin GE, Clayton PT, Madge DJ, Muller DPR. Synthesis and analysis of conjugates of the major vitamin E metabolite, alpha-CEHC. Free Radic Biol Med 2002; 33:807-17. [PMID: 12208368 DOI: 10.1016/s0891-5849(02)00974-7] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Glucuronide and sulphate conjugates of 2,5,7,8-tetramethyl-2-(2'-carboxyethyl)-6-hydroxychroman (alpha-CEHC), the major metabolite of alpha-tocopherol (vitamin E), have been synthesized and used for the first direct analysis of conjugated urinary vitamin E metabolites. The metabolites of vitamin E (alpha-tocopherol) could be useful as markers of the function(s) of vitamin E in vivo. A number of methods have been described for the analysis of urinary vitamin E metabolites but these have relied on either acid or enzymatic deconjugation of the metabolites prior to analysis by high performance liquid chromatography or gas chromatography/mass spectrometry. These methods have provided useful information about the amount and types of metabolites excreted in the urine but suffer from a number of disadvantages. Deconjugation has been shown to produce artifacts as a result of the conversion of alpha-CEHC to alpha-tocopheronolactone and the efficiency of deconjugation is also difficult to assess. Methods that allow the direct measurement of the conjugated metabolites would overcome these problems and would also substantially reduce the preparation and analysis time. Here we describe the use of conjugated standards to characterize alpha-CEHC conjugates in human urine by tandem mass spectrometry (MS-MS). The future use of MS-MS to measure urinary vitamin E metabolites is also discussed.
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Affiliation(s)
- Simon A S Pope
- Biochemistry, Endocrinology and Metabolism Unit, The Institute of Child Health, University College London, London, UK
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29
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Hasuoka A, Nakayama Y, Adachi M, Kamiguchi H, Kamiyama K. Development of a stereoselective practical synthetic route to indolmycin, a candidate anti-H. pylori agent. Chem Pharm Bull (Tokyo) 2001; 49:1604-8. [PMID: 11767081 DOI: 10.1248/cpb.49.1604] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A stereoselective practical synthetic route to indolmycin is described. The route is composed of the regioselective coupling of indolyl magnesium halide with a trans-epoxy ester, diastereoselective oxazolone ring formation with guanidine and amine exchange reaction with methylamine. In the coupling step, use of dichloromethane as co-solvent and conversion of the resulting hydroxy ester to the hydroxy acid for purification, make this process efficient and practical. The oxazolone ring is formed in good yield without epimerization at the C5 position by treatment with guanidine and potassium tert-butoxide in tert-butanol at room temperature. In the final step, the amino group is efficiently converted to the methylamino group in aqueous methylamine solution at 5 degrees C. After examination of the route with racemates, indolmycin was synthesized stereoselectively in 22% total yield from optically active trans-epoxy ester. This route was applied to the preparation of the metabolites of indolmycin.
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Affiliation(s)
- A Hasuoka
- Medicinal Chemistry Research Laboratories I, Takeda Chemical Industries Ltd., Osaka, Japan
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Orita A, Hamada Y, Nakano T, Toyoshima S, Otera J. Highly efficient deacetylation by use of the neutral organotin catalyst [tBu2SnOH(Cl)]2. Chemistry 2001; 7:3321-7. [PMID: 11531118 DOI: 10.1002/1521-3765(20010803)7:15<3321::aid-chem3321>3.0.co;2-h] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Deprotection of acetyl esters is effected cleanly by the neutral organotin catalyst, [tBu2SnOH(Cl)]2. The mildness of the reaction gives rise to great synthetic versatility and in the process a variety of functional groups are tolerated. Differentiations between primary, secondary, and tertiary alcohols and between acetyl ester and other esters are feasible. No racemization occurs with chiral acetyl esters. Exclusive deprotection of primary acetyl esters in carbohydrates and nucleosides is observed. The crude product thus obtained can be used for further reactions without purification.
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Affiliation(s)
- A Orita
- Department of Applied Chemistry, Okayama University of Science, Japan
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Rossignol JF, Stachulski AV. Syntheses and Antibacterial Activities of Tizoxanide, an N-(Nitrothiazolyl)salicylamide, and its O-Aryl Glucuronide. JOURNAL OF CHEMICAL RESEARCH 1999. [DOI: 10.1177/174751989902300128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mild hydrolysis of the broad-spectrum anaerobic antibacterial and antiparasitic agent nitazoxanide 1 affords tizoxanide 2, which is a major metabolite of 1 retaining most of its activity; further metabolism of 2 leads to the O-aryl glucuronide 3, efficiently synthesised in four steps from benzyl salicylate and showing slight antibacterial activity.
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Affiliation(s)
- Jean-François Rossignol
- The Romark Institute for Medical Research, 6200 Courtney Campbell Causeway, Suite 870, Tampa, Florida, USA
| | - Andrew V. Stachulski
- Salford Ultrafine Chemicals and Research Ltd., Synergy House, Guildhall Close, Manchester Science Park, Manchester M15 6SY, UK
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33
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Grindley TB. Applications of tin-containing intermediates to carbohydrate chemistry. Adv Carbohydr Chem Biochem 1998; 53:17-142. [PMID: 9710969 DOI: 10.1016/s0065-2318(08)60043-8] [Citation(s) in RCA: 141] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- T B Grindley
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada
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34
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Affiliation(s)
- A V Stachulski
- Salford Ultrafine Chemicals and Research, Manchester, UK
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35
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Nudelman A, Ruse M, Gottlieb HE, Fairchild C. Studies in sugar chemistry. VII. Glucuronides of podophyllum derivatives. Arch Pharm (Weinheim) 1997; 330:285-9. [PMID: 9396386 DOI: 10.1002/ardp.19973300904] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The antitumor activities of several glucuronide methyl esters of podophyllum derivatives were tested in vitro against two human tumor cell lines and their drug resistant sublines. The most active compound studied was methyl (4'-carbobenzoxy-4'-demethyl-epipodophyllotoxin-D-glucopyranoside)uronat e 19. Compound 19 was as potent in a colon carcinoma model and was twice as potent in a lung carcinoma model as etoposide 6. In vivo, however, in a mouse leukemia P388 model, it had only marginal activity, with a maximum T/C% value of 125 at 37 mg/kg (iv).
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Affiliation(s)
- A Nudelman
- Chemistry Department, Bar-Ilan University, Ramat Gan, Israel
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36
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Affiliation(s)
- Yao-Chang Xu
- CNS Division, Lilly Research Laboratories, Lilly Corporate Center, Indianapolis, Indiana 46285
| | - Amsalu Bizuneh
- CNS Division, Lilly Research Laboratories, Lilly Corporate Center, Indianapolis, Indiana 46285
| | - Clint Walker
- CNS Division, Lilly Research Laboratories, Lilly Corporate Center, Indianapolis, Indiana 46285
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37
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Moriguchi T, Wada T, Sekine M. New Nucleoside−Sugar Conjugates: 6-N-Glycosyloxyphosphorylated Adenosine Derivatives as Partial Structures of Agrocin 84. J Org Chem 1996. [DOI: 10.1021/jo961489a] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tomohisa Moriguchi
- Department of Life Science, Tokyo Institute of Technology, Nagatsuta, Midoriku, Yokohama 226, Japan
| | - Takeshi Wada
- Department of Life Science, Tokyo Institute of Technology, Nagatsuta, Midoriku, Yokohama 226, Japan
| | - Mitsuo Sekine
- Department of Life Science, Tokyo Institute of Technology, Nagatsuta, Midoriku, Yokohama 226, Japan
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α-1-Tributyltin-O-2,3-bisacetyl-4,6-ethylidene-glucose as a convenient glycosidation reagent: An efficient synthesis of etoposide. Tetrahedron 1996. [DOI: 10.1016/0040-4020(95)01122-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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39
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Yao-Chang X, Bizuneh A, Walker C. Selective deprotection of alkyl esters using magnesium methoxide. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(95)02197-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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40
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Petráková E, Glaudemans CP. Anomalous Zemplén deacylation of protected methyl 2-deoxy-alpha-D-arabino- hexopyranosides and related methyl alpha-isomaltosides and alpha-isomaltotriosides. Carbohydr Res 1995; 268:135-41. [PMID: 7736462 DOI: 10.1016/0008-6215(94)00315-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- E Petráková
- NIDDK, National Institutes of Health, Bethesda, MD 20892
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41
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Petráková E, Glaudemans CP. Synthesis of methyl glycosides of some alpha-isomalto oligosaccharides specifically deoxygenated at position C-2. Carbohydr Res 1995; 268:35-46. [PMID: 7736465 DOI: 10.1016/0008-6215(94)00314-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Methyl alpha-isomaltoside and methyl alpha-isomaltotrioside analogues specifically deoxygenated at position C-2 of various glucopyranosyl units were synthesized by condensation of either 6-O-acetyl-3-O-benzoyl-4-O-benzyl-1-O-tert-butyldimethylsilyl-2-deoxy- beta-D-arabino-hexopyranose (trimethylsilyl triflate mediated) or 6-O-acetyl-2,3,4-tri-O-benzyl-alpha-D-glucopyranosyl chloride (mediated by silver carbonate and silver triflate) with suitably blocked derivatives of methyl alpha-D-glucopyranoside, its 2-deoxy analogue, or methyl 2'-deoxy-alpha-isomaltoside.
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Affiliation(s)
- E Petráková
- NIDDK, National Institutes of Health, Bethesda, MD 20892
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42
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Auzanneau FI, Bundle DR. Synthesis of chlorodeoxy trisaccharides related to the Shigella flexneri Y polysaccharide. Carbohydr Res 1993; 247:195-209. [PMID: 7693346 DOI: 10.1016/0008-6215(93)84252-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Chloromethoxylation of di-O-acetyl-L-rhamnal has been employed as a convenient route to methyl 3,4-di-O-acetyl-2-chloro-2-deoxy-alpha-L-rhamnopyranoside 7, which was converted into an ethyl thioglycoside 10, suitable for use as a glycosyl donor. It and a disaccharide analogue 20 were effective donors in N-iodosuccinimide-triflic acid promoted glycosylations of a 2-acetamido-2-deoxy-D-glucopyranoside acceptor 22. Chlorodeoxy saccharides have previously been shown to be suitable derivatives to probe oligosaccharide-protein interactions, and this synthetic strategy provided three monochlorodeoxy trisaccharide congeners of the native Shigella flexneri epitope 2, alpha-L-Rhap-(1-->3)-alpha-L-Rhap-(1-->3)-beta-D-GlcNAcp+ ++-(1-->O)-Me.
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Affiliation(s)
- F I Auzanneau
- Institute for Biological Sciences, National Research Council of Canada, Ottawa, Ontario
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43
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Gurjar M, Saha U. Synthesis of the complete glycotetrapeptide core of structurally variant glycopeptidolipid. Bioorg Med Chem Lett 1993. [DOI: 10.1016/s0960-894x(01)81257-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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44
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Synthesis of a new serine containing glycotetrapeptide from glycopeptidolipid : An unusual structural variant in mycobacterium genus. Tetrahedron Lett 1992. [DOI: 10.1016/s0040-4039(00)61250-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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The chemistry of taxanes: unexpected rearrangement of baccatin III during chemoselective debenzoylation with Bu3SnOMe/LiCl. Tetrahedron Lett 1992. [DOI: 10.1016/0040-4039(92)88078-j] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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46
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Synthesis of methyl 3--[3--(2,3,4-tri--methyl-α-L-rhamnopyranosyl)-α-L-rhamnopyranosyl]-α-L-rhamnopyranoside : The outer trisaccharide unit of a unique glycopeptidolipid. Tetrahedron 1992. [DOI: 10.1016/s0040-4020(01)80018-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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47
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Gurjar MK, Saha UK. Synthesis of the glycopeptide - O-(3,4-di-O-methyl-2-O-[3,4-di-O-methyl-α-L-rhamnopyranosyl]-α-L-rhamnopyranosyl)-L-alanilol: An unusual part structure in the glycopeptidolipid of. Tetrahedron 1992. [DOI: 10.1016/s0040-4020(01)88483-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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48
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Salomon CJ, Mata EG, Mascaretti OA. Bis (tributyltin) oxide. A mild, neutral and selective reagent for cleavage of esters. Scope and limitation of the reaction. Tetrahedron Lett 1991. [DOI: 10.1016/s0040-4039(00)92137-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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49
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Pozsgay V, Jennings HJ. Synthesis of Glycosyl Esters and Glycosyl Hemiacetals From Methylthioglycosides. J Carbohydr Chem 1990. [DOI: 10.1080/07328309008543836] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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50
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