1
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Guo YF, Xu TT, Zhang GH, Dong H. Synthesis of 2-Deoxyglycosides with Exclusive β-Configuration Using 2-SAc Glycosyl Bromide Donors. Molecules 2025; 30:185. [PMID: 39795241 PMCID: PMC11721102 DOI: 10.3390/molecules30010185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2024] [Revised: 12/27/2024] [Accepted: 01/03/2025] [Indexed: 01/13/2025] Open
Abstract
In this study, we developed an indirect method for the synthesis of 2-deoxyglycosides with an exclusive β-configuration using glucosyl and galactosyl bromide donors with 2-thioacetyl (SAc) groups. The 2-SAc glucosyl and galactosyl bromide donors were easily obtained through the treatment of 1-OAc, 2-SAc glucose and galactose with HBr-CH3COOH solution, respectively. The glycosylation of such donors with acceptors under an improved Koenigs-Knorr condition resulted in glycosylation products with an exclusive β-configuration in excellent yields. The synthetic approach of 2-SAc glycosyl donors using glycals as the starting materials was also investigated. Based on these studies, the synthetic method of using 2-deoxyglycosides with an exclusive β-configuration through desulfurization will have more practical applications.
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Affiliation(s)
| | | | | | - Hai Dong
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Ministry of Education, Luoyu Road 1037, Wuhan 430074, China
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2
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Luo T, Zhang GH, Guo YF, Dong H. Highly Reactive Glycosylation with 1- O-(Methylthio)thiocarbonyl Glycosyl Donors under Acidic to Neutral Reaction Conditions. J Org Chem 2024; 89:14315-14327. [PMID: 39268645 DOI: 10.1021/acs.joc.4c01740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/17/2024]
Abstract
In this study, we have successfully developed a glycosylation method using 1-O-(methylthio)thiocarbonyl-glycoses as donors. Such xanthate donors are easily accessible and shelf-stable. The glycosylation reaction could be promoted by cations (acidic to neutral conditions) under mild conditions, exhibiting a reactivity intermediate between that with glycosyl trichloroacetimidate as the donor and that with thioglycoside as the donor. This methodology tolerates both "armed" and "disarmed" glycosyl donors, as well as various sugar acceptors, and affords the corresponding glycosides in good to excellent yields. Based on the relative higher reactivity of such xanthate donors than thioglycoside donors under the same glycosylation conditions, a trisaccharide was further synthesized in a one-pot glycosylation strategy.
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Affiliation(s)
- Tao Luo
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, P. R. China
| | - Guo-Hui Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, P. R. China
| | - Yang-Fan Guo
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, P. R. China
| | - Hai Dong
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, P. R. China
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3
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Gorelik DJ, Desai SP, Jdanova S, Turner JA, Taylor MS. Transformations of carbohydrate derivatives enabled by photocatalysis and visible light photochemistry. Chem Sci 2024; 15:1204-1236. [PMID: 38274059 PMCID: PMC10806712 DOI: 10.1039/d3sc05400d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 12/13/2023] [Indexed: 01/27/2024] Open
Abstract
This review article highlights the diverse ways in which recent developments in the areas of photocatalysis and visible light photochemistry are impacting synthetic carbohydrate chemistry. The major topics covered are photocatalytic glycosylations, generation of radicals at the anomeric position, transformations involving radical formation at non-anomeric positions, additions to glycals, processes initiated by photocatalytic hydrogen atom transfer from sugars, and functional group interconversions at OH and SH groups. Factors influencing stereo- and site-selectivity in these processes, along with mechanistic aspects, are discussed.
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Affiliation(s)
- Daniel J Gorelik
- Department of Chemistry, University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
| | - Shrey P Desai
- Department of Chemistry, University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
| | - Sofia Jdanova
- Department of Chemistry, University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
| | - Julia A Turner
- Department of Chemistry, University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
| | - Mark S Taylor
- Department of Chemistry, University of Toronto 80 St. George St. Toronto ON M5S 3H6 Canada
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4
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Deng LF, Wang Y, Xu S, Shen A, Zhu H, Zhang S, Zhang X, Niu D. Palladium catalysis enables cross-coupling-like S N2-glycosylation of phenols. Science 2023; 382:928-935. [PMID: 37995215 DOI: 10.1126/science.adk1111] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/24/2023] [Indexed: 11/25/2023]
Abstract
Despite their importance in life and material sciences, the efficient construction of stereo-defined glycosides remains a challenge. Studies of carbohydrate functions would be advanced if glycosylation methods were as reliable and modular as palladium (Pd)-catalyzed cross-coupling. However, Pd-catalysis excels in forming sp2-hybridized carbon centers whereas glycosylation mostly builds sp3-hybridized C-O linkages. We report a glycosylation platform through Pd-catalyzed SN2 displacement from phenols toward bench-stable, aryl-iodide-containing glycosyl sulfides. The key Pd(II) oxidative addition intermediate diverges from an arylating agent (Csp2 electrophile) to a glycosylating agent (Csp3 electrophile). This method inherits many merits of cross-coupling reactions, including operational simplicity and functional group tolerance. It preserves the SN2 mechanism for various substrates and is amenable to late-stage glycosylation of commercial drugs and natural products.
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Affiliation(s)
- Li-Fan Deng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and School of Chemical Engineering, Sichuan University, Chengdu, China
| | - Yingwei Wang
- Department of Nuclear Medicine & Laboratory of Clinical Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Shiyang Xu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and School of Chemical Engineering, Sichuan University, Chengdu, China
| | - Ao Shen
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and School of Chemical Engineering, Sichuan University, Chengdu, China
| | - Hangping Zhu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and School of Chemical Engineering, Sichuan University, Chengdu, China
| | - Siyu Zhang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and School of Chemical Engineering, Sichuan University, Chengdu, China
| | - Xia Zhang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and School of Chemical Engineering, Sichuan University, Chengdu, China
| | - Dawen Niu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and School of Chemical Engineering, Sichuan University, Chengdu, China
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5
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Liang XY, Liu AL, Shawn Fan HJ, Wang L, Xu ZN, Ding XG, Huang BS. TsOH-catalyzed acyl migration reaction of the Bz-group: innovative assembly of various building blocks for the synthesis of saccharides. Org Biomol Chem 2023; 21:1537-1548. [PMID: 36723045 DOI: 10.1039/d2ob02052a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We developed an efficient method to achieve the regioselective acyl migration of benzoyl ester. In all the cases, the reactions required only the commercially available organic acid catalyst TsOH·H2O. This method enables the benzoyl group to migrate from secondary groups to primary hydroxyl groups, or from equatorial secondary hydroxyl groups to axial hydroxyl groups. The 1,2 or 1,3 acyl migration would potentially occur via five- and six-membered cyclic ortho acid intermediates. A wide range of orthogonally protected monosaccharides, which are useful intermediates for the synthesis of natural oligosaccharides, were synthesized. Finally, to demonstrate the utility of the method, a tetrasaccharide portion from a mycobacterial cell wall polysaccharide was assembled.
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Affiliation(s)
- Xing-Yong Liang
- School of Chemistry Engineering, Sichuan University of Science & Engineering, Zigong 643000, China.
| | - An-Lin Liu
- School of Chemistry Engineering, Sichuan University of Science & Engineering, Zigong 643000, China.
| | - Hua-Jun Shawn Fan
- School of Chemistry Engineering, Sichuan University of Science & Engineering, Zigong 643000, China.
| | - Lei Wang
- School of Chemistry Engineering, Sichuan University of Science & Engineering, Zigong 643000, China.
| | - Zhi-Ning Xu
- School of Chemistry Engineering, Sichuan University of Science & Engineering, Zigong 643000, China.
| | - Xin-Gang Ding
- School of Chemistry Engineering, Sichuan University of Science & Engineering, Zigong 643000, China.
| | - Bo-Shun Huang
- Division of Chemistry and Chemical Engineering, California Institute of Technology and Howard Hughes Medical Institute, 1200 East California Boulevard, Pasadena, California 91125, USA.
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6
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Witte MD, Minnaard AJ. Site-Selective Modification of (Oligo)Saccharides. ACS Catal 2022; 12:12195-12205. [PMID: 36249871 PMCID: PMC9552177 DOI: 10.1021/acscatal.2c03876] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 09/14/2022] [Indexed: 11/29/2022]
Abstract
Oligosaccharides, either as such or as part of glycolipids, glycopeptides, or glycoproteins, are ubiquitous in nature and fulfill important roles in the living cell. Also in medicine and to some extent in materials, oligosaccharides play an important role. In order to study their function, modifying naturally occurring oligosaccharides, and building in reactive groups and reporter groups in oligosaccharides, are key strategies. The development of oligosaccharides as drugs, or vaccines, requires the introduction of subtle modifications in the structure of oligosaccharides to optimize efficacy and, in the case of antibiotics, circumvent bacterial resistance. Provided the natural oligosaccharide is available, site-selective modification is an attractive approach as total synthesis of the target is often very laborious. Researchers in catalysis areas, such as transition-metal catalysis, enzyme catalysis, organocatalysis, and photoredox catalysis, have made considerable progress in the development of site-selective and late-stage modification methods for mono- and oligosaccharides. It is foreseen that the fields of enzymatic modification of glycans and the chemical modification of (oligo)saccharides will approach and potentially meet each other, but there is a lot to learn and discover before this will be the case.
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Affiliation(s)
- Martin D. Witte
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747
AG Groningen, The Netherlands
| | - Adriaan J. Minnaard
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747
AG Groningen, The Netherlands
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7
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Guo YF, Luo T, Feng GJ, Liu CY, Dong H. Efficient Synthesis of 2-OH Thioglycosides from Glycals Based on the Reduction of Aryl Disulfides by NaBH4. Molecules 2022; 27:molecules27185980. [PMID: 36144712 PMCID: PMC9506437 DOI: 10.3390/molecules27185980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 09/07/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
An improved method to efficiently synthesize 2-OH thioaryl glycosides starting from corresponding per-protected glycals was developed, where 1,2-anhydro sugars were prepared by the oxidation of glycals with oxone, followed by reaction of crude crystalline 1,2-anhydro sugars with NaBH4 and aryl disulfides. This method has been further used in a one-pot reaction to synthesize glycosyl donors having both “armed” and “NGP (neighboring group participation)” effects.
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8
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Luo T, Zhang Q, Guo YF, Pei ZC, Dong H. Efficient Preparation of 2‐SAc‐Glycosyl Donors and Investigation of Their Application in Synthesis of 2‐Deoxyglycosides. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tao Luo
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry & Chemical Engineering Luoyu Road 1037 430074 Wuhan CHINA
| | - Qiang Zhang
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry & Chemical Engineering CHINA
| | - Yang-Fan Guo
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry & Chemical Engineering CHINA
| | - Zhi-Chao Pei
- Northwest Agriculture and Forestry University College of Chemistry and Pharmacy CHINA
| | - Hai Dong
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry & Chemical Engineering Luoyu Road 1037 430074 Wuhan CHINA
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9
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Lv J, Liu CY, Guo YF, Feng GJ, Dong H. SnCl2‐catalyzed acetalation/selective‐benzoylation sequence for the synthesis of orthogonally protected glycosyl acceptors. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jian Lv
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Chun-Yang Liu
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Yang-Fan Guo
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Guang-Jing Feng
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Hai Dong
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry & Chemical Engineering Luoyu Road 1037 430074 Wuhan CHINA
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10
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Feng GJ, Luo T, Guo YF, Liu CY, Dong H. Concise Synthesis of 1-Thioalkyl Glycoside Donors by Reaction of Per-O-acetylated Sugars with Sodium Alkanethiolates under Solvent-Free Conditions. J Org Chem 2022; 87:3638-3646. [DOI: 10.1021/acs.joc.1c02171] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Guang-Jing Feng
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, P. R. China
| | - Tao Luo
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, P. R. China
| | - Yang-Fan Guo
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, P. R. China
| | - Chun-Yang Liu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, P. R. China
| | - Hai Dong
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, P. R. China
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
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11
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Feng G, Wang S, Lv J, Luo T, Wu Y, Dong H. Improved Synthesis of 1‐Glycosyl Thioacetates and Its Application in the Synthesis of Thioglucoside Gliflozin Analogues. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100357] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Guang‐Jing Feng
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 Wuhan 430074 PR China
| | - Shuang‐Shuang Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 Wuhan 430074 PR China
| | - Jian Lv
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 Wuhan 430074 PR China
| | - Tao Luo
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 Wuhan 430074 PR China
| | - Yuzhou Wu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 Wuhan 430074 PR China
| | - Hai Dong
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 Wuhan 430074 PR China
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica Huazhong University of Science & Technology Luoyu Road 1037 Wuhan 430074 PR China
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12
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Ge J, Zhang L, Pu L, Zhang Y, Pei Z, Dong H. The Oxidation of
S
‐Acetyl by Nitrite: Mechanism and Application. ChemistrySelect 2020. [DOI: 10.1002/slct.202003566] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jian‐Tao Ge
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 430074 Wuhan P. R. China
- School of Chemistry and Chemical Engineering Hubei Polytechnic University Guilinbei Road 16 Huangshi 435003 P. R. China
| | - Le‐Feng Zhang
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 430074 Wuhan P. R. China
| | - Liang Pu
- College of Chemistry and Pharmacy Northwest A&F University Yangling 712100 Shaanxi P. R. China
| | - Ying Zhang
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 430074 Wuhan P. R. China
| | - Zhi‐Chao Pei
- College of Chemistry and Pharmacy Northwest A&F University Yangling 712100 Shaanxi P. R. China
| | - Hai Dong
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 430074 Wuhan P. R. China
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13
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Luo T, Zhang Y, Xi J, Lu Y, Dong H. Improved Synthesis of Sulfur-Containing Glycosides by Suppressing Thioacetyl Migration. Front Chem 2020; 8:319. [PMID: 32391332 PMCID: PMC7191076 DOI: 10.3389/fchem.2020.00319] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 03/30/2020] [Indexed: 11/18/2022] Open
Abstract
Complex mixtures were often observed when we attempted to synthesize 4-thio- and 2,4-dithio-glycoside derivatives by double parallel and double serial inversion, thus leading to no or low yields of target products. The reason was later found to be that many unexpected side products were produced when a nucleophile substituted the leaving group on the substrate containing the thioacetate group. We hypothesized that thioacetyl migration is prone to occur due to the labile thioacetate group even under weak basic conditions caused by the nucleophile, leading to this result. Therefore, we managed to inhibit the generation of thiol groups from thioacetate groups by the addition of an appropriate amount of conjugate acid/anhydride, successfully improving the synthesis of 4-thio- and 2,4-dithio-glycoside derivatives. The target products which were previously difficult to synthesize, were herein obtained in relatively high yields. Finally, 4-deoxy- and 2,4-dideoxy-glycoside derivatives were efficiently synthesized through the removal of thioacetate groups under UV light, starting from 4-thio- and 2,4-dithio-glycoside derivatives.
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Affiliation(s)
- Tao Luo
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry & Chemical Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Zhang
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry & Chemical Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Jiafeng Xi
- Analysis Center of College of Science & Technology, Hebei Agricultural University, Huanghua, China
| | - Yuchao Lu
- Analysis Center of College of Science & Technology, Hebei Agricultural University, Huanghua, China
| | - Hai Dong
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry & Chemical Engineering, Huazhong University of Science and Technology, Wuhan, China
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14
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Romeo JR, McDermott L, Bennett CS. Reagent-Controlled α-Selective Dehydrative Glycosylation of 2,6-Dideoxy Sugars: Construction of the Arugomycin Tetrasaccharide. Org Lett 2020; 22:3649-3654. [PMID: 32281384 PMCID: PMC7239334 DOI: 10.1021/acs.orglett.0c01153] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The first synthesis of the tetrasaccharide fragment of the anthracycline natural product Arugomycin is described. A reagent controlled dehydrative glycosylation method involving cyclopropenium activation was utilized to synthesize the α-linkages with complete anomeric selectivity. The synthesis was completed in 20 total steps, and in 2.5% overall yield with a longest linear sequence of 15 steps.
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Affiliation(s)
- Joseph R Romeo
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Luca McDermott
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Clay S Bennett
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
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15
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Lv J, Zhu JJ, Liu Y, Dong H. Regioselective Sulfonylation/Acylation of Carbohydrates Catalyzed by FeCl 3 Combined with Benzoyltrifluoroacetone and Its Mechanism Study. J Org Chem 2020; 85:3307-3319. [PMID: 31984732 DOI: 10.1021/acs.joc.9b03128] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A catalytic amount of FeCl3 combined with benzoyl trifluoroacetone (Hbtfa) (FeCl3/Hbtfa = 1/2) was used to catalyze sulfonylation/acylation of diols and polyols using diisopropylethylamine (DIPEA) or potassium carbonate (K2CO3) as a base. The catalytic system exhibited high catalytic activity, leading to excellent isolated yields of sulfonylation/acylation products with high regioselectivities. Mechanism studies indicated that FeCl3 initially formed [Fe(btfa)3] (btfa = benzoyl trifluoroacetonate) with twice the amount of Hbtfa under basic conditions in the solvent acetonitrile at room temperature. Then, Fe(btfa)3 and two hydroxyl groups of the substrates formed a five- or six-membered ring intermediate in the presence of the base. The subsequent reaction between the cyclic intermediate and a sulfonylation reagent led to the selective sulfonylation of the substrate. All key intermediates were captured in the high-resolution mass spectrometry assay, therefore demonstrating this mechanism for the first time.
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Affiliation(s)
- Jian Lv
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, PR China
| | - Jia-Jia Zhu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, PR China
| | - Yu Liu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, PR China
| | - Hai Dong
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, PR China.,Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Huazhong University of Science & Technology, Luoyu Road 1037, Wuhan 430074, PR China
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16
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Lv J, Luo T, Zou D, Dong H. Using DMF as Both a Catalyst and Cosolvent for the Regioselective Silylation of Polyols and Diols. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901195] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jian Lv
- Key Laboratory for Large-Format Battery Materials and System; Ministry of Education; School of Chemistry & Chemical Engineering; Huazhong University of Science & Technology; Luoyu Road 1037 430074 Hongshan Wuhan P.R. China
| | - Tao Luo
- Key Laboratory for Large-Format Battery Materials and System; Ministry of Education; School of Chemistry & Chemical Engineering; Huazhong University of Science & Technology; Luoyu Road 1037 430074 Hongshan Wuhan P.R. China
| | - Dapeng Zou
- The College of Chemistry and Molecular Engineering; Zhengzhou University; 450052 Zhengzhou P. R. China
| | - Hai Dong
- Key Laboratory for Large-Format Battery Materials and System; Ministry of Education; School of Chemistry & Chemical Engineering; Huazhong University of Science & Technology; Luoyu Road 1037 430074 Hongshan Wuhan P.R. China
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