1
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Cai J, Yuan X, Kong Y, Hu Y, Li J, Jiang S, Dong C, Ding K. Chemical approaches for the stereocontrolled synthesis of 1,2-cis-β-D-rhamnosides. Chin J Nat Med 2023; 21:886-901. [PMID: 38143103 DOI: 10.1016/s1875-5364(23)60408-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Indexed: 12/26/2023]
Abstract
In carbohydrate chemistry, the stereoselective synthesis of 1,2-cis-glycosides remains a formidable challenge. This complexity is comparable to the synthesis of 1,2-cis-β-D-mannosides, primarily due to the adverse anomeric and Δ-2 effects. Over the past decades, to attain β-stereoselectivity in D-rhamnosylation, researchers have devised numerous direct and indirect methodologies, including the hydrogen-bond-mediated aglycone delivery (HAD) method, the synthesis of β-D-mannoside paired with C6 deoxygenation, and the combined approach of 1,2-trans-glycosylation and C2 epimerization. This review elaborates on the advancements in β-D-rhamnosylation and its implications for the total synthesis of tiacumicin B and other physiologically relevant glycans.
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Affiliation(s)
- Juntao Cai
- Henan Polysaccharide Research Center, Henan Key Laboratory of Chinese Medicine for Polysaccharides and Drugs Research, Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Xin Yuan
- Henan Polysaccharide Research Center, Henan Key Laboratory of Chinese Medicine for Polysaccharides and Drugs Research, Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Yuanfang Kong
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Yulong Hu
- Henan Polysaccharide Research Center, Henan Key Laboratory of Chinese Medicine for Polysaccharides and Drugs Research, Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Jieming Li
- Henan Polysaccharide Research Center, Henan Key Laboratory of Chinese Medicine for Polysaccharides and Drugs Research, Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Shiqing Jiang
- Henan Polysaccharide Research Center, Henan Key Laboratory of Chinese Medicine for Polysaccharides and Drugs Research, Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China; Department of Oncology, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou 450000, China.
| | - Chunhong Dong
- Henan Polysaccharide Research Center, Henan Key Laboratory of Chinese Medicine for Polysaccharides and Drugs Research, Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Kan Ding
- Henan Polysaccharide Research Center, Henan Key Laboratory of Chinese Medicine for Polysaccharides and Drugs Research, Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China; Carbohydrate-Based Drug Research Center, CAS Key Laboratory of Receptor Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
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2
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Zhang Y, Chen C, Gao Y, Yang M, He Z, Zhang B, Gu G, Tang B, Cai F. β-l-Rhamnosylation and β-d-Mannosylation Mediated by 4- O-Ester Groups in a Weakly Nucleophilic Environment. Org Lett 2023; 25:7120-7125. [PMID: 37738091 DOI: 10.1021/acs.orglett.3c02566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
eq-4-O-Acyl group directed β-rhamnosylation and β-mannosylation are achieved in a carborane or BARF anion formed weakly nucleophilic environment with the assistance of a 2,3-orthocarbonate group. The 4-O-acyl group plays a critical role in directing the β-selectivity, and the weakly coordinating anion is essential to amplify this direction. The orthocarbonate group could be readily removed with 1,3-propanediol in the presence of BF3·Et2O.
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Affiliation(s)
- Yongliang Zhang
- National Glycoengineering Research Center and Shandong Key laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, 72 Binhai Rd Qingdao 266237, China
| | - Changsheng Chen
- National Glycoengineering Research Center and Shandong Key laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, 72 Binhai Rd Qingdao 266237, China
| | - Yongtao Gao
- National Glycoengineering Research Center and Shandong Key laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, 72 Binhai Rd Qingdao 266237, China
| | - Min Yang
- Center for Analysis and Characterization, School of Physical Science and Technology, ShanghaiTech University, 393 Huaxia Middle Rd, Shanghai 201210, China
| | - Zehuan He
- National Glycoengineering Research Center and Shandong Key laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, 72 Binhai Rd Qingdao 266237, China
| | - Bangzhi Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Guofeng Gu
- National Glycoengineering Research Center and Shandong Key laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, 72 Binhai Rd Qingdao 266237, China
| | - Bencan Tang
- Faculty of Science and Engineering, The University of Nottingham Ningbo China, 199 Taikang E Rd, Ningbo 315100, China
| | - Feng Cai
- National Glycoengineering Research Center and Shandong Key laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, 72 Binhai Rd Qingdao 266237, China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
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3
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Qin C, Li L, Tian G, Ding M, Zhu S, Song W, Hu J, Seeberger PH, Yin J. Chemical Synthesis and Antigenicity Evaluation of Shigella dysenteriae Serotype 10 O-Antigen Tetrasaccharide Containing a ( S)-4,6- O-Pyruvyl Ketal. J Am Chem Soc 2022; 144:21068-21079. [DOI: 10.1021/jacs.2c05953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Chunjun Qin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P. R. China
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, Potsdam 14476, Germany
| | - Lingxin Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P. R. China
| | - Guangzong Tian
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P. R. China
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, Potsdam 14476, Germany
| | - Meiru Ding
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P. R. China
| | - Shengyong Zhu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P. R. China
| | - Wuqiong Song
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P. R. China
| | - Jing Hu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P. R. China
- Wuxi School of Medicine, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P. R. China
| | - Peter H. Seeberger
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, Potsdam 14476, Germany
| | - Jian Yin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu 214122, P. R. China
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Liu X, Lin Y, Peng W, Zhang Z, Gao L, Zhou Y, Song Z, Wang Y, Xu P, Yu B, Sun H, Xie W, Li W. Direct Synthesis of 2,6-Dideoxy-β-glycosides and β-Rhamnosides with a Stereodirecting 2-(Diphenylphosphinoyl)acetyl Group. Angew Chem Int Ed Engl 2022; 61:e202206128. [PMID: 35695834 DOI: 10.1002/anie.202206128] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Indexed: 12/11/2022]
Abstract
Anomeric stereocontrol is usually one of the major issues in the synthesis of complex carbohydrates, particularly those involving β-configured 2,6-dideoxyglycoside and d/l-rhamnoside moieties. Herein, we report that 2-(diphenylphosphinoyl)acetyl is highly effective as a remote stereodirecting group in the direct synthesis of these challenging β-glycosides under mild conditions. A deoxy-trisaccharide as a mimic of the sugar chain of landomycin E was prepared stereospecifically in high yield. The synthetic potential was also highlighted in the synthesis of Citrobacter freundii O-antigens composed of a [→4)-α-d-Manp-(1→3)-β-d-Rhap(1→4)-β-d-Rhap-(1→] repeating unit, wherein the convergent assembly up to a nonasaccharide was realized with a strongly β-directing trisaccharide donor. Variable-temperature NMR studies indicate the presence of intermolecular H-bonding between the donor and the bulky acceptor as direct spectral evidence in support of the concept of hydrogen-bond-mediated aglycone delivery.
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Affiliation(s)
- Xianglai Liu
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Yetong Lin
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Wenyi Peng
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Zhaolun Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Longwei Gao
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Yueer Zhou
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Zhe Song
- Instrumental Analysis Center, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, Jiangsu 210009, China
| | - Yingjie Wang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Peng Xu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Biao Yu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Haopeng Sun
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Weijia Xie
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Wei Li
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
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5
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Liu X, Lin Y, Peng W, Zhang Z, Gao L, Zhou Y, Song Z, Wang Y, Xu P, Yu B, Sun H, Xie W, Li W. Direct Synthesis of 2,6‐Dideoxy‐β‐glycosides and β‐Rhamnosides with a Stereodirecting 2‐(Diphenylphosphinoyl)acetyl Group. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xianglai Liu
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Yetong Lin
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Wenyi Peng
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Zhaolun Zhang
- Shanghai Institute of Organic Chemistry State Key Laboratory of Bioorganic and Natural Products Chemistry CHINA
| | - Longwei Gao
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Yueer Zhou
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Zhe Song
- China Pharmaceutical University Instrumental Analysis Center CHINA
| | - Yingjie Wang
- Shanghai Institute of Organic Chemistry State Key Laboratory of Bioorganic and Natural Products Chemistry CHINA
| | - Peng Xu
- Shanghai Institute of Organic Chemistry State Key Laboratory of Bioorganic and Natural Products Chemistry CHINA
| | - Biao Yu
- Shanghai Institute of Organic Chemistry State Key Laboratory of Bioorganic and Natural Products Chemistry CHINA
| | - Haopeng Sun
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Weijia Xie
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry CHINA
| | - Wei Li
- China Pharmaceutical University School of Pharmacy Department of Medicinal Chemistry 639 Longmian Avenue 211198 Nanjing CHINA
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6
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Marino C, Bordoni AV. Deoxy sugars. General methods for carbohydrate deoxygenation and glycosidation. Org Biomol Chem 2022; 20:934-962. [PMID: 35014646 DOI: 10.1039/d1ob02001c] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Deoxy sugars represent an important class of carbohydrates, present in a large number of biomolecules involved in multiple biological processes. In various antibiotics, antimicrobials, and therapeutic agents the presence of deoxygenated units has been recognized as responsible for biological roles, such as adhesion or great affinity to receptors, or improved efficacy. The characterization of glycosidases and glycosyltranferases requires substrates, inhibitors and analogous compounds. Deoxygenated sugars are useful for carrying out specific studies for these enzymes. Deoxy sugars, analogs of natural substrates, may behave as substrates or inhibitors, or may not interact with the enzyme. They are also important for glycodiversification studies of bioactive natural products and glycobiological processes, which could contribute to discovering new therapeutic agents with greater efficacy by modification or replacement of sugar units. Deoxygenation of carbohydrates is, thus, of great interest and numerous efforts have been dedicated to the development of methods for the reduction of sugar hydroxyl groups. Given that carbohydrates are the most important renewable chemicals and are more oxidized than fossil raw materials, it is also important to have methods to selectively remove oxygen from certain atoms of these renewable raw materials. The different methods for removal of OH groups of carbohydrates and representative or recent applications of them are presented in this chapter. Glycosidic bonds in general, and 2-deoxy glycosidic linkages, are included. It is not the scope of this survey to cover all reports for each specific technique.
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Affiliation(s)
- Carla Marino
- CIHIDECAR, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, Ciudad Universitaria, 1428 Buenos Aires, Argentina.
| | - Andrea V Bordoni
- Gerencia Química & Instituto de Nanociencia y Nanotecnología - Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, CONICET, Av. Gral. Paz 1499, B1650KNA San Martín, Buenos Aires, Argentina
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7
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Abstract
l-Rhamnose forms the key components of important antigenic oligo- and polysaccharides of a variety of pathogens. Obtaining 1,2-cis stereoselectivity in the glycosylation of l-rhamnoside is quite challenging due to the unavailability of neighboring group participation and disfavoring of the anomeric effect and stereoelectronic effect of the substituents on the C-2 axial position. Nevertheless, various methodologies have been developed exploiting diverse pathways for obtaining β-stereoselectivity in the glycosylation of l-rhamnose. This review describes the recent advances in β-l-rhamnosylation and its applications in the total synthesis of β-l-rhamnose-containing biologically important oligosaccharides.
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Affiliation(s)
- 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.
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8
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Cai J, Hu J, Qin C, Li L, Shen D, Tian G, Zou X, Seeberger PH, Yin J. Chemical Synthesis Elucidates the Key Antigenic Epitope of the Autism‐Related Bacterium
Clostridium bolteae
Capsular Octadecasaccharide. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Juntao Cai
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Biotechnology Jiangnan University Lihu Avenue 1800 Wuxi Jiangsu Province 214122 P. R. China
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
| | - Jing Hu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Biotechnology Jiangnan University Lihu Avenue 1800 Wuxi Jiangsu Province 214122 P. R. China
- Wuxi School of Medicine Jiangnan University Lihu Avenue 1800 Wuxi Jiangsu Province 214122 P. R. China
| | - Chunjun Qin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Biotechnology Jiangnan University Lihu Avenue 1800 Wuxi Jiangsu Province 214122 P. R. China
| | - Lingxin Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Biotechnology Jiangnan University Lihu Avenue 1800 Wuxi Jiangsu Province 214122 P. R. China
| | - Dacheng Shen
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
| | - Guangzong Tian
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Biotechnology Jiangnan University Lihu Avenue 1800 Wuxi Jiangsu Province 214122 P. R. China
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
| | - Xiaopeng Zou
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Biotechnology Jiangnan University Lihu Avenue 1800 Wuxi Jiangsu Province 214122 P. R. China
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
| | - Peter H. Seeberger
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
| | - Jian Yin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Biotechnology Jiangnan University Lihu Avenue 1800 Wuxi Jiangsu Province 214122 P. R. China
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9
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Qin C, Liu Z, Ding M, Cai J, Fu J, Hu J, Seeberger PH, Yin J. Chemical synthesis of the Pseudomonas aeruginosa O11 O-antigen trisaccharide based on neighboring electron-donating effect. J Carbohydr Chem 2020. [DOI: 10.1080/07328303.2020.1839479] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Chunjun Qin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Zhonghua Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Meiru Ding
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Juntao Cai
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
- Department of Biomolecular Systems, Max-Plank Institute of Colloids and Interfaces, Potsdam, Germany
| | - Junjie Fu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Jing Hu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
- Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Peter H. Seeberger
- Department of Biomolecular Systems, Max-Plank Institute of Colloids and Interfaces, Potsdam, Germany
| | - Jian Yin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
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10
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Cai J, Hu J, Qin C, Li L, Shen D, Tian G, Zou X, Seeberger PH, Yin J. Chemical Synthesis Elucidates the Key Antigenic Epitope of the Autism-Related Bacterium Clostridium bolteae Capsular Octadecasaccharide. Angew Chem Int Ed Engl 2020; 59:20529-20537. [PMID: 32734715 DOI: 10.1002/anie.202007209] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/13/2020] [Indexed: 12/20/2022]
Abstract
The gut pathogen Clostridium bolteae has been associated with the onset of autism spectrum disorder (ASD). To create vaccines against C. bolteae, it is important to identify exact protective epitopes of the immunologically active capsular polysaccharide (CPS). Here, a series of C. bolteae CPS glycans, up to an octadecasaccharide, was prepared. Key to achieving the total syntheses is a [2+2] coupling strategy based on a β-d-Rhap-(1→3)-α-d-Manp repeating unit that in turn was accessed by a stereoselective β-d-rhamnosylation. The 4,6-O-benzylidene-induced conformational locking is a powerful strategy for forming a β-d-mannose-type glycoside. An indirect strategy based on C2 epimerization of β-d-quinovoside was efficiently achieved by Swern oxidation and borohydride reduction. Sequential glycosylation, and regioselective and global deprotection produced the disaccharide and tetrasaccharide, up to the octadecasaccharide. Glycan microarray analysis of sera from rabbits immunized with inactivated C. bolteae bacteria revealed a humoral immune response to the di- and tetrasaccharide, but none of the longer sequences. The tetrasaccharide may be a key motif for designing glycoconjugate vaccines against C. bolteae.
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Affiliation(s)
- Juntao Cai
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu Province, 214122, P. R. China.,Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Jing Hu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu Province, 214122, P. R. China.,Wuxi School of Medicine, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu Province, 214122, P. R. China
| | - Chunjun Qin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu Province, 214122, P. R. China
| | - Lingxin Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu Province, 214122, P. R. China
| | - Dacheng Shen
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Guangzong Tian
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu Province, 214122, P. R. China.,Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Xiaopeng Zou
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu Province, 214122, P. R. China.,Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Peter H Seeberger
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Jian Yin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi, Jiangsu Province, 214122, P. R. China
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11
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Chaudhury A, Mukhopadhyay B. Synthesis of the pentasaccharide repeating unit of the O-antigen from Enterobacter cloacae C4115 containing the rare α-d-FucNAc. RSC Adv 2020; 10:4942-4948. [PMID: 35498329 PMCID: PMC9049057 DOI: 10.1039/c9ra09807k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 01/09/2020] [Indexed: 11/21/2022] Open
Abstract
Total synthesis of the pentasaccharide repeating unit associated with the O-antigen of Enterobacter cloacae C4115 is reported. The synthesis of the said oligosaccharide was accomplished through rational protecting group manipulations on commercially available monosaccharides followed by stereoselective glycosylations either by activation of thioglycosides or glycosyl trichloroacetimidates and was found to be productive. Towards the synthesis of the rare sugar unit, α-d-FucNAc in this case, it was established that the methoxymethyl (MOM) group is advantageous over the earlier reported tetrahydro pyran (THP) protection. The effect of MOM-protection was successfully tested for the synthesis of a rare sugar synthon which can serve as a precursor to the rare d-fucosamine residue. Pentasaccharide repeating unit of the O-antigen of Enterobacter cloacae C4115 is accomplished through rational protecting group manipulations. For the synthesis of α-d-FucNAc, it was established that the methoxymethyl (MOM) group is advantageous over the earlier reported tetrahydro pyran (THP) protection.![]()
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Affiliation(s)
- Aritra Chaudhury
- Sweet Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Nadia 741246
- India
| | - Balaram Mukhopadhyay
- Sweet Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Nadia 741246
- India
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12
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Vessella G, Casillo A, Fabozzi A, Traboni S, Iadonisi A, Corsaro MM, Bedini E. Synthesis of the tetrasaccharide repeating unit of the cryoprotectant capsular polysaccharide from Colwellia psychrerythraea 34H. Org Biomol Chem 2019; 17:3129-3140. [DOI: 10.1039/c9ob00104b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Synthesis of the threonine-decorated tetrasaccharide repeating unit of a cryoprotectant polysaccharide with a glycosaminoglycan-like structure.
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Affiliation(s)
- Giulia Vessella
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario Monte S. Angelo
- I-80126 Napoli
- Italy
| | - Angela Casillo
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario Monte S. Angelo
- I-80126 Napoli
- Italy
| | - Antonio Fabozzi
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario Monte S. Angelo
- I-80126 Napoli
- Italy
| | - Serena Traboni
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario Monte S. Angelo
- I-80126 Napoli
- Italy
| | - Alfonso Iadonisi
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario Monte S. Angelo
- I-80126 Napoli
- Italy
| | - Maria Michela Corsaro
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario Monte S. Angelo
- I-80126 Napoli
- Italy
| | - Emiliano Bedini
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario Monte S. Angelo
- I-80126 Napoli
- Italy
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13
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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
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14
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Kanamori T, Matsuyama A, Naito H, Tsuga Y, Ozako Y, Ogura SI, Okazaki S, Yuasa H. Water-Soluble Glucosyl Pyrene Photosensitizers: An Intramolecularly Synthesized 2-C-Glucoside and an O-Glucoside. J Org Chem 2018; 83:13765-13775. [DOI: 10.1021/acs.joc.8b02066] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takashi Kanamori
- School of Life Science and Technology, Tokyo Institute of Technology, J2-10 4259 Nagatsuta, Midoriku, Yokohama 226-8501, Japan
| | - Akira Matsuyama
- School of Life Science and Technology, Tokyo Institute of Technology, J2-10 4259 Nagatsuta, Midoriku, Yokohama 226-8501, Japan
| | - Hidenori Naito
- School of Life Science and Technology, Tokyo Institute of Technology, J2-10 4259 Nagatsuta, Midoriku, Yokohama 226-8501, Japan
| | - Yuki Tsuga
- School of Life Science and Technology, Tokyo Institute of Technology, J2-10 4259 Nagatsuta, Midoriku, Yokohama 226-8501, Japan
| | - Yoshiki Ozako
- School of Life Science and Technology, Tokyo Institute of Technology, J2-10 4259 Nagatsuta, Midoriku, Yokohama 226-8501, Japan
| | - Shun-ichiro Ogura
- School of Life Science and Technology, Tokyo Institute of Technology, J2-10 4259 Nagatsuta, Midoriku, Yokohama 226-8501, Japan
| | - Shigetoshi Okazaki
- Department of Medical Spectroscopy, Preeminent Medical Photonics Education and Research Center, Hamamatsu University School of Medicine, Handayama 1-20-1, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Hideya Yuasa
- School of Life Science and Technology, Tokyo Institute of Technology, J2-10 4259 Nagatsuta, Midoriku, Yokohama 226-8501, Japan
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15
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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.
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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.
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16
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Synthesis of Functionalized Nitriles by Microwave-Promoted Fragmentations of Cyclic Iminyl Radicals. Chemistry 2017; 24:594-598. [DOI: 10.1002/chem.201705728] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Indexed: 12/16/2022]
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17
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18
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Zhu Y, Shen Z, Li W, Yu B. Stereoselective synthesis of β-rhamnopyranosides via gold(i)-catalyzed glycosylation with 2-alkynyl-4-nitro-benzoate donors. Org Biomol Chem 2016; 14:1536-9. [DOI: 10.1039/c5ob02551f] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
An effective β-rhamnosylation protocol has been developed by using α-rhamnopyranosyl ortho-hexynyl-para-nitro-benzoates as donors and Ph3PAuBArF4 as a catalyst.
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Affiliation(s)
- Yugen Zhu
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Zhengnan Shen
- School of Physical Science and Technology
- ShanghaiTech University
- Shanghai 201210
- China
| | - Wei Li
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Biao Yu
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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19
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Frihed TG, Bols M, Pedersen CM. Mechanisms of Glycosylation Reactions Studied by Low-Temperature Nuclear Magnetic Resonance. Chem Rev 2015; 115:4963-5013. [DOI: 10.1021/cr500434x] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Mikael Bols
- Department of Chemistry, University of Copenhagen, DK-2100 Copenhagen, Denmark
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20
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Zhu Y, Yu B. Highly Stereoselective β-Mannopyranosylation via the 1-α-Glycosyloxy-isochromenylium-4-gold(I) Intermediates. Chemistry 2015; 21:8771-80. [DOI: 10.1002/chem.201500648] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Indexed: 01/02/2023]
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21
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Mandal PK. Synthesis of the pentasaccharide repeating unit of the O-antigen of E. coli O117:K98:H4. Beilstein J Org Chem 2014; 10:2724-8. [PMID: 25550736 PMCID: PMC4273275 DOI: 10.3762/bjoc.10.287] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 11/06/2014] [Indexed: 11/24/2022] Open
Abstract
The pentasaccharide repeating unit of the O-antigen of E. coli O117:K98:H4 strain has been synthesized using a combination of sequential glycosylations and [3 + 2] block synthetic strategy from the suitably protected monosaccharide intermediates. Thioglycosides and glycosyl trichloroacetimidate derivatives have been used as glycosyl donors in the glycosylations.
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Affiliation(s)
- Pintu Kumar Mandal
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram extension, Sitapur Road, Lucknow, 226 031, India
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22
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Chaudhury A, Maity SK, Ghosh R. Efficient routes toward the synthesis of the D-rhamno-trisaccharide related to the A-band polysaccharide of Pseudomonas aeruginosa. Beilstein J Org Chem 2014; 10:1488-94. [PMID: 25161705 PMCID: PMC4142843 DOI: 10.3762/bjoc.10.153] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 06/11/2014] [Indexed: 12/22/2022] Open
Abstract
The present work describes efficient avenues for the synthesis of the trisaccharide repeating unit [α-D-Rhap-(1→3)-α-D-Rhap-(1→3)-α-D-Rhap] associated with the A-band polysaccharide of Pseudomonas aeruginosa. One of the key steps involved 6-O-deoxygenation of either partially or fully acylated 4,6-O-benzylidene-1-thiomannopyranoside by radical-mediated redox rearrangement in high yields and regioselectivity. The D-rhamno-thioglycosides so obtained allowed efficient access to the trisaccharide target via stepwise glycosylation as well as a one-pot glycosylation protocol. In a different approach, a 4,6-O-benzylidene D-manno-trisaccharide derivative was synthesized, which upon global 6-O-deoxygenation followed by deprotection generated the target D-rhamno-trisaccharide. The application of the reported regioselective radical-mediated deoxygenation on 4,6-O-benzylidene D-manno thioglycoside (hitherto unexplored) has potential for ramification in the field of synthesis of oligosaccharides based on 6-deoxy hexoses.
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Affiliation(s)
- Aritra Chaudhury
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Sajal K Maity
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Rina Ghosh
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
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23
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Michihata N, Kaneko Y, Kasai Y, Tanigawa K, Hirokane T, Higasa S, Yamada H. High-Yield Total Synthesis of (−)-Strictinin through Intramolecular Coupling of Gallates. J Org Chem 2013; 78:4319-28. [DOI: 10.1021/jo4003135] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naoki Michihata
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan
| | - Yuki Kaneko
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan
| | - Yusuke Kasai
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan
| | - Kotaro Tanigawa
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan
| | - Tsukasa Hirokane
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan
| | - Sho Higasa
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan
| | - Hidetoshi Yamada
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan
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24
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Frihed TG, Walvoort MTC, Codée JDC, van der Marel GA, Bols M, Pedersen CM. Influence of O6 in Mannosylations Using Benzylidene Protected Donors: Stereoelectronic or Conformational Effects? J Org Chem 2013; 78:2191-205. [DOI: 10.1021/jo302455d] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Tobias Gylling Frihed
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100
Copenhagen, Denmark
| | - Marthe T. C. Walvoort
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden,
The Netherlands
| | - Jeroen D. C. Codée
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden,
The Netherlands
| | - Gijs A. van der Marel
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden,
The Netherlands
| | - Mikael Bols
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100
Copenhagen, Denmark
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25
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Crich D. Methodology development and physical organic chemistry: a powerful combination for the advancement of glycochemistry. J Org Chem 2011; 76:9193-209. [PMID: 21919522 PMCID: PMC3215858 DOI: 10.1021/jo2017026] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
This Perspective outlines work in the Crich group on the diastereoselective synthesis of the so-called difficult classes of glycosidic bond: the 2-deoxy-β-glycopyranosides, the β-mannopyranosides, the α-sialosides, the α-glucopyranosides, and the β-arabinofuranosides with an emphasis on the critical interplay between mechanism and methodology development.
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Affiliation(s)
- David Crich
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA.
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26
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Affiliation(s)
- Feng Cai
- Department of Chemistry, Wayne State University, Detroit, MI 48202, USA
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27
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Synthesis of potassium (2R)-2-O-alpha-d-glucopyranosyl-(1-->6)-alpha-d-glucopyranosyl-2,3-dihydroxypropanoate a natural compatible solute. Carbohydr Res 2009; 344:2073-8. [PMID: 19691955 DOI: 10.1016/j.carres.2009.06.037] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2008] [Revised: 06/19/2009] [Accepted: 06/21/2009] [Indexed: 11/21/2022]
Abstract
Ethyl 6-O-acetyl-2,3,4-tribenzyl-1-thio-d-glucopyranoside, as a mixture of anomers, was employed for the stereoselective synthesis of the potassium salt of (2R)-2-O-alpha-d-glucopyranosyl-(1-->6)-alpha-d-glucopyranosyl-2,3-dihydroxypropanoic acid (alpha-d-glucosyl-(1-->6)-alpha-d-glucosyl-(1-->2)-d-glyceric acid, GGG), a recently isolated compatible solute. The alpha-anomer was by far the major product of both glycosylation reactions using NIS/TfOH as activator.
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28
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Onozaki Y, Kurono N, Senboku H, Tokuda M, Orito K. Synthesis of Isoindolobenzazepine Alkaloids Based on Radical Reactions or Pd(0)-Catalyzed Reactions. J Org Chem 2009; 74:5486-95. [DOI: 10.1021/jo900311g] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu Onozaki
- Laboratory of Organic Synthesis, Division of Molecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Nobuhito Kurono
- Laboratory of Organic Synthesis, Division of Molecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Hisanori Senboku
- Laboratory of Organic Synthesis, Division of Molecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Masao Tokuda
- Laboratory of Organic Synthesis, Division of Molecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Kazuhiko Orito
- Laboratory of Organic Synthesis, Division of Molecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
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29
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Fernández-Mateos A, Madrazo SE, Teijón PH, González RR. Titanocene-Promoted Intermolecular Couplings of Epoxides with Nitriles. An Easy Access to β-Hydroxyketones. J Org Chem 2009; 74:3913-8. [DOI: 10.1021/jo900479v] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Fernández-Mateos
- Departamento de Química Orgánica, Facultad de CC. Químicas, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - S. Encinas Madrazo
- Departamento de Química Orgánica, Facultad de CC. Químicas, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - P. Herrero Teijón
- Departamento de Química Orgánica, Facultad de CC. Químicas, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - R. Rubio González
- Departamento de Química Orgánica, Facultad de CC. Químicas, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
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30
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31
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32
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Son SH, Tano C, Furuike T, Sakairi N. Pre-activation of fully acetylated dodecyl thioglycosides with BSP–Tf2O led to efficient glycosylation at low temperature. Carbohydr Res 2009; 344:285-90. [DOI: 10.1016/j.carres.2008.11.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2008] [Revised: 11/11/2008] [Accepted: 11/12/2008] [Indexed: 11/27/2022]
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33
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Crich D, Li L. Stereocontrolled synthesis of D- and L-beta-rhamnopyranosides with 4-O-6-S-alpha-cyanobenzylidene-protected 6-thiorhamnopyranosyl thioglycosides. J Org Chem 2009; 74:773-81. [PMID: 19132946 PMCID: PMC2696688 DOI: 10.1021/jo8022439] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis of both enantiomers of a 4-O-6-S-alpha-cyanobenzylidene-protected 6-thiorhamnopyranosyl thioglycoside is described starting from D-mannnose and L-arabinose derivatives for the D- and L-series, respectively. This donor is effective in the preparation of the corresponding beta-glycosides using the 1-benzenesulfinyl piperidine/trifluoromethanesulfonic anhydride protocol. Following desulfurization and concomitant debenzylation with Raney nickel, the so-formed 6-thio-beta-mannosides are converted in high yield to the beta-rhamnopyranosides.
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Affiliation(s)
- David Crich
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, USA.
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34
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Bencivenni G, Lanza T, Leardini R, Minozzi M, Nanni D, Spagnolo P, Zanardi G. Iminyl Radicals from α-Azido o-Iodoanilides via 1,5-H Transfer Reactions of Aryl Radicals: New Transformation of α-Azido Acids to Decarboxylated Nitriles. J Org Chem 2008; 73:4721-4. [DOI: 10.1021/jo800453z] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Giorgio Bencivenni
- Dipartimento di Chimica Organica “A. Mangini”, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Tommaso Lanza
- Dipartimento di Chimica Organica “A. Mangini”, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Rino Leardini
- Dipartimento di Chimica Organica “A. Mangini”, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Matteo Minozzi
- Dipartimento di Chimica Organica “A. Mangini”, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Daniele Nanni
- Dipartimento di Chimica Organica “A. Mangini”, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Piero Spagnolo
- Dipartimento di Chimica Organica “A. Mangini”, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Giuseppe Zanardi
- Dipartimento di Chimica Organica “A. Mangini”, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
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35
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Mandal PK, Misra AK. Concise synthesis of the pentasaccharide O-antigen of Escherichia coli O83:K24:H31 present in the Colinfant vaccine. Glycoconj J 2008; 25:713-22. [PMID: 18415016 DOI: 10.1007/s10719-008-9120-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2007] [Revised: 02/08/2008] [Accepted: 02/21/2008] [Indexed: 11/30/2022]
Abstract
A block synthetic approach is presented for the synthesis of the pentasaccharide repeating unit of the O-antigen of E. coli O83:K24:H31 strain, present in the "Colifant" vaccine. The target pentasaccharide has been synthesized by coupling a disaccharide with a trisaccharide in excellent yield. Yields are quite satisfactory in all intermediate steps.
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Affiliation(s)
- Pintu Kumar Mandal
- Medicinal and Process Chemistry Division, Central Drug Research Institute, Chattar Manzil Palace, Lucknow, 226 001, India
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36
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Beaume A, Courillon C, Derat E, Malacria M. Unprecedented Aromatic Homolytic Substitutions and Cyclization of AmideIminyl Radicals: Experimental and Theoretical Study. Chemistry 2008; 14:1238-52. [DOI: 10.1002/chem.200700884] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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37
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Nokami T, Shibuya A, Tsuyama H, Suga S, Bowers AA, Crich D, Yoshida JI. Electrochemical generation of glycosyl triflate pools. J Am Chem Soc 2007; 129:10922-8. [PMID: 17696345 PMCID: PMC4658653 DOI: 10.1021/ja072440x] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Glycosyl triflates, which serve as important intermediates in glycosylation reactions, were generated and accumulated by the low-temperature electrochemical oxidation of thioglycosides such as thioglucosides, thiogalactosides, and thiomannosides in the presence of tetrabutylammonium triflate (Bu(4)NOTf) as a supporting electrolyte. Thus-obtained solutions of glycosyl triflates (glycosyl triflate pools) were characterized by low-temperature NMR measurements. The thermal stability of glycosyl triflates and their reactions with glycosyl acceptors were also examined.
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38
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Crich D, Bowers AA. Synthesis of a beta-(1-->3)-D-rhamnotetraose by a one-pot, multiple radical fragmentation. Org Lett 2007; 8:4327-30. [PMID: 16956218 PMCID: PMC2617736 DOI: 10.1021/ol061706m] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A naturally occurring beta-(1-->3)-D-rhamnotetraose has been constructed under conditions of sequential beta-selective mannosylation controlled by the 4,6-O-[1-cyano-2-(2-iodophenyl)-ethylidene] protecting group. The route is concise, proceeding through a late-stage radical deoxygenation that successfully uncovers all four deoxy subunits at once.
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Affiliation(s)
- David Crich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, USA.
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Crich D, Xu H. Direct stereocontrolled synthesis of 3-amino-3-deoxy-beta-mannopyranosides: importance of the nitrogen protecting group on stereoselectivity. J Org Chem 2007; 72:5183-92. [PMID: 17567072 PMCID: PMC2621320 DOI: 10.1021/jo070473p] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The highly stereocontrolled synthesis of the 3-amino-3-deoxy-beta-mannopyranosides is achieved by means of thioglycoside donors protected with a 4,6-O-benzylidene or alkylidene acetal and a benzylidene imine group. Among the various nitrogen protecting groups investigated only the Schiff's base was found to give high beta-selectivity. N-Phthalimido and N-acetamido protected donors were found to be highly alpha-selective, whereas 3-azido-3-deoxy glycosyl donors gave intermediate selectivity. The reasons for the protecting group dependency are discussed in terms of the change in the O2-C2-C3-N3 torsional interaction on conversion of the covalent glycosyl triflates to the transient oxacarbenium ions.
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Affiliation(s)
- David Crich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, USA.
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40
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Crich D, Pedersen CM, Bowers AA, Wink DJ. On the use of 3,5-O-benzylidene and 3,5-O-(di-tert-butylsilylene)-2-O-benzylarabinothiofuranosides and their sulfoxides as glycosyl donors for the synthesis of beta-arabinofuranosides: importance of the activation method. J Org Chem 2007; 72:1553-65. [PMID: 17286432 PMCID: PMC2617737 DOI: 10.1021/jo061440x] [Citation(s) in RCA: 98] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A 2-O-benzyl-3,5-O-benzylidene-alpha-d-thioarabinofuranoside was obtained by reaction of the corresponding diol with alpha,alpha-dibromotoluene under basic conditions. On activation with 1-benzenesulfinyl piperidine, or diphenyl sulfoxide, and trifluoromethanesulfonic anhydride in dichloromethane at -55 degrees C, reaction with glycosyl acceptors affords anomeric mixtures with little or no selectivity. The analogous 2-O-benzyl-3,5-O-(di-tert-butylsilylene)-alpha-d-thioarabinofuranoside also showed no significant selectivity under the 1-benzenesulfinyl piperidine or diphenyl sulfoxide conditions. With N-iodosuccinimide and silver trifluoromethanesulfonate the silylene acetal showed moderate to high beta-selectivity, independent of the configuration of the starting thioglycoside. High beta-selectivity was also obtained with a 2-O-benzyl-3,5-O-(di-tert-butylsilylene)-alpha-arabinofuranosyl sulfoxide donor on activation with trifluoromethanesulfonic anhydride. The high beta-selectivities obtained by the N-iodosuccinimide/silver trifluoromethanesulfonate and sulfoxide methods are consistent with a common intermediate, most likely to be the oxacarbenium ion. The poor selectivity observed on activation of the thioglycosides with the 1-benzenesulfinyl piperidine, or diphenyl sulfoxide, and trifluoromethanesulfonic anhydride methods appears to be the result of the formation of a complex mixture of glycosyl donors, as determined by low-temperature NMR work.
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Affiliation(s)
- David Crich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, IL 60607-7061, USA.
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41
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Litjens REJN, van den Bos LJ, Codée JDC, Overkleeft HS, van der Marel GA. The use of cyclic bifunctional protecting groups in oligosaccharide synthesis—an overview. Carbohydr Res 2007; 342:419-29. [PMID: 17007825 DOI: 10.1016/j.carres.2006.09.002] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2006] [Revised: 08/30/2006] [Accepted: 09/01/2006] [Indexed: 11/27/2022]
Abstract
A historical overview is presented on stereo-directing effects of cis- and trans-fused diol protective groups used on both donor and acceptor glycosides. Attention is focused on the use of cyclic carbonates and carbamates, diacetals and acetals and finally the special case of 1,2-O-orthoesters and 1,2-O-cyanoalkylidene functionalised residues.
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Affiliation(s)
- Remy E J N Litjens
- Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2333CC Leiden, The Netherlands
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Servais A, Azzouz M, Lopes D, Courillon C, Malacria M. Radical Cyclization ofN-Acylcyanamides: Total Synthesis of Luotonin A. Angew Chem Int Ed Engl 2007; 46:576-9. [PMID: 17154202 DOI: 10.1002/anie.200602940] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Aurore Servais
- Laboratoire de Chimie Organique, UMR CNRS 7611, Institut de Chimie Moléculaire, FR 2769, Université Pierre et Marie Curie, Paris 6, case 229, 4 place Jussieu, 75252 Paris, France
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44
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Crich D, Wu B. 1-naphthylpropargyl ether group: a readily cleaved and sterically minimal protecting system for stereoselective glycosylation. Org Lett 2006; 8:4879-82. [PMID: 17020326 PMCID: PMC2615467 DOI: 10.1021/ol061938l] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] The (1-naphthyl)propargyl group is introduced as a sterically unobtrusive alcohol protecting group that is cleaved in a single step by exposure to dichlorodicyanoquinone in wet dichloromethane. In conjunction with the 4,6-O-benzylidene protecting group, and the use of the sulfoxide glycosylation method, 3-O-naphthylpropargyl-protected mannosyl donors are extremely beta-selective.
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Affiliation(s)
- David Crich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, USA.
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Crich D, Banerjee A. Stereocontrolled synthesis of the D- and L-glycero-beta-D-manno-heptopyranosides and their 6-deoxy analogues. Synthesis of methyl alpha-l-rhamno-pyranosyl-(1-->3)-D-glycero-beta-D-manno-heptopyranosyl- (1-->3)-6-deoxy-glycero-beta-D-manno-heptopyranosyl-(1-->4)-alpha-L- rhamno-pyranoside, a tetrasaccharide subunit of the lipopolysaccharide from Plesimonas shigelloides. J Am Chem Soc 2006; 128:8078-86. [PMID: 16771524 PMCID: PMC2617734 DOI: 10.1021/ja061594u] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of d- and l-glycero-alpha-manno-thioheptopyranosides, protected with 4,6-O-alkylidene-type acetals is described. In glycosylations carried out with preactivation with the 1-benzenesulfinylpiperidine/trifluoromethanesulfonic anhydride couple, both the D- and L-glycero series exhibit excellent beta-selectivity with a range of glycosyl acceptors. In contrast, a 4,7-O-alkylidene acetal was found not to afford beta-selectivity. With a 4,6-O-[1-cyano-2-(2-iodophenyl)ethylidene] acetal protected thioglycoside, excellent beta-selectivity was obtained in glycosylation reactions, and subsequent treatment with tributyltin hydride and azoisobutyronitrile brought about clean fragmentation to the 6-deoxy-glycero-beta-D-manno-heptopyranosides. This chemistry was applied to the stereocontrolled synthesis of methyl alpha-L-rhamno-pyranosyl-(1-->3)-D-glycero-beta-D-manno-heptopyranosyl-(1-->3)-6-deoxy-glycero-beta-D-manno-heptopyranosyl-(1-->4)-alpha-L-rhamno-pyranoside, a component of the lipopolysaccharide from Plesimonas shigelloides.
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Affiliation(s)
- David Crich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, USA.
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Crich D, Patel M. On the nitrile effect in L-rhamnopyranosylation. Carbohydr Res 2006; 341:1467-75. [PMID: 16643872 PMCID: PMC1559506 DOI: 10.1016/j.carres.2006.03.036] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2006] [Revised: 03/17/2006] [Accepted: 03/28/2006] [Indexed: 10/24/2022]
Abstract
It is shown that the use of 5% acetonitrile or propionitrile in dichloromethane functions to increase the beta-selectivity of a number of L-rhamnopyranosylation reactions conducted by the thioglycoside method with activation by the 1-benzenesulfinyl piperidine/trifluoromethanesulfonic anhydride couple. The use of more significant quantities of acetonitrile or propionitrile results in the formation of complex reaction mixtures containing little coupled product, but from which Ritter-type products can be isolated.
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Affiliation(s)
- David Crich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, IL 60607-7061, USA.
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