1
|
Chen GW, Guo L, Huang J, Ma H, Fernandez-Castillo S, Soubal-Mora JP, Valdes-Balbin Y, Verez-Bencomo V. Synthesis of oligosaccharides from terminal B. pertussis LPS pentasaccharide and definition of the minimal epitope recognized by anti-pertussis antibodies. Glycoconj J 2024:10.1007/s10719-024-10160-z. [PMID: 39046578 DOI: 10.1007/s10719-024-10160-z] [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: 10/16/2023] [Revised: 06/04/2024] [Accepted: 07/10/2024] [Indexed: 07/25/2024]
Abstract
Pertussis vaccines have been very effective in controlling whooping-cough epidemics but are ineffective in controlling circulation in older children and adults, thus facilitating the onset of future outbreaks. Antibodies against the lipopolysaccharide could reduce the carriage of the bacteria, its circulation, and transmission. The oligosaccharide fragments from the lipopolysaccharide may become a potential complement to existing vaccines in the form of protein glycoconjugates. An important step in the development of this type of vaccine is defining the minimal oligosaccharide epitope recognized by B. pertussis anti-lipopolysaccharide antibodies. This paper describes the complete synthesis of oligosaccharides containing two to five monosaccharide units corresponding to the pentasaccharide at the nonreducing end of the lipooligosaccharide and their recognition by mice and rabbit antibodies elicited against whole-cell B. pertussis. For the first time, we report that the terminal disaccharide, α-D-GlcNAcp-(1 → 4)-(2,3-di-NAc)-D-ManAp acid is the minimal structure recognized by antibodies induced by B. pertussis.
Collapse
Affiliation(s)
- Guang-Wu Chen
- Chengdu Olisynn Biotech. Co., Ltd., Building 3, Tianfu Life science Park. No 88, South Keyuan Rd., Chengdu, Sichuan, 610041, People's Republic of China
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Lina Guo
- Chengdu Olisynn Biotech. Co., Ltd., Building 3, Tianfu Life science Park. No 88, South Keyuan Rd., Chengdu, Sichuan, 610041, People's Republic of China
| | - Jiasheng Huang
- Chengdu Olisynn Biotech. Co., Ltd., Building 3, Tianfu Life science Park. No 88, South Keyuan Rd., Chengdu, Sichuan, 610041, People's Republic of China
| | - Haijun Ma
- Chengdu Olisynn Biotech. Co., Ltd., Building 3, Tianfu Life science Park. No 88, South Keyuan Rd., Chengdu, Sichuan, 610041, People's Republic of China
| | | | | | | | | |
Collapse
|
2
|
Jiang Y, Duan S, Li J, Zhao Y, Yang J. Chemical and chemoenzymatic syntheses of sialyl Lewis a tetrasaccharide antigen. Org Biomol Chem 2024; 22:5776-5782. [PMID: 38934561 DOI: 10.1039/d4ob00809j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Sialyl Lewisa (sLea), also known as cancer antigen 19-9, is a tumor-associated carbohydrate antigen. In this article, chemical and chemoenzymatic syntheses of a tetrasaccharide glycan 1 structurally derived from sLea are reported. Challenges involved in the chemical synthesis include the highly stereoselective construction of 1,2-cis-α-L-fucoside and α-D-sialoside, as well as the assembly of the 3,4-disubstituted N-acetylglucosamine subunit. Perbenzylated thiofucoside and N-acetyl-5-N,4-O-oxazolidinone protected sialic acid thioglycoside were employed as glycosyl donors, respectively, for the efficient preparation of the desired α-fucoside and α-sialoside. The 3,4-branched glucosamine backbone was established through a 3-O and then 4-O glycosylation sequence in which the 3-hydroxyl group of the glucosamine moiety was glycosylated first and then the 4-hydroxyl. A facile chemoenzymatic approach was also exploited to synthesize the target molecule. The chemically obtained free disaccharide 30 was sequentially sialylated and fucosylated in an enzyme-catalyzed regio- and stereospecific manner to form 1 in high yields. The linker appended 1 can be covalently attached to a carrier protein for further immunological studies.
Collapse
Affiliation(s)
- Yuanyuan Jiang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Shichao Duan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Jiaming Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Yanli Zhao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Jinsong Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| |
Collapse
|
3
|
Calles-Garcia D, Dube DH. Chemical biology tools to probe bacterial glycans. Curr Opin Chem Biol 2024; 80:102453. [PMID: 38582017 PMCID: PMC11164641 DOI: 10.1016/j.cbpa.2024.102453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 03/05/2024] [Accepted: 03/10/2024] [Indexed: 04/08/2024]
Abstract
Bacterial cells are covered by a complex carbohydrate coat of armor that allows bacteria to thrive in a range of environments. As a testament to the importance of bacterial glycans, effective and heavily utilized antibiotics including penicillin and vancomycin target and disrupt the bacterial glycocalyx. Despite their importance, the study of bacterial glycans lags far behind their eukaryotic counterparts. Bacterial cells use a large palette of monosaccharides to craft glycans, leading to molecules that are significantly more complex than eukaryotic glycans and that are refractory to study. Fortunately, chemical tools designed to probe bacterial glycans have yielded insights into these molecules, their structures, their biosynthesis, and their functions.
Collapse
Affiliation(s)
- Daniel Calles-Garcia
- Department of Chemistry and Biochemistry, Bowdoin College, 6600 College Station, Brunswick, ME 04011, USA
| | - Danielle H Dube
- Department of Chemistry and Biochemistry, Bowdoin College, 6600 College Station, Brunswick, ME 04011, USA.
| |
Collapse
|
4
|
Ghotekar BK, Kulkarni SS. Total Synthesis of the Conjugation-Ready Tetrasaccharide Repeating Unit of Shewanella japonica Type Strain KMM 3299 T. Org Lett 2024; 26:4346-4350. [PMID: 38722236 DOI: 10.1021/acs.orglett.4c01354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Here we report the first total synthesis of the conjugation-ready tetrasaccharide repeating unit of Shewanella japonica type strain KMM 3299T. The presence of rare deoxyamino sugars and installation of three consecutive 1,2-cis glycosidic linkages makes the synthesis formidable. The challenging late-stage oxidation was overcome by using a galacturonate donor. The total synthesis was completed via a longest linear sequence of 22 steps in an overall yield of 3.5% starting from d-mannose.
Collapse
Affiliation(s)
- Balasaheb K Ghotekar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| |
Collapse
|
5
|
Zhang H, Zeng C, Zhu Q, Zhu D, Yu B. Synthesis of the Reducing-end Hexasaccharide Fragment of Marine Lipopolysaccharide Axinelloside A. Chemistry 2024; 30:e202304180. [PMID: 38180294 DOI: 10.1002/chem.202304180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 12/27/2023] [Accepted: 01/05/2024] [Indexed: 01/06/2024]
Abstract
Chemical synthesis of an orthogonally protected hexasaccharide relevant to the reducing-end half of axinelloside A, a highly sulfated marine lipopolysaccharide, is disclosed. The synthesis features preparation of the scyllo-inositol unit via a Ferrier-type-II rearrangement, construction of the 1,2-cis-glycosidic bonds via remote participation, and concise [2+2+2] assembly via Au(I)-catalyzed glycosylation.
Collapse
Affiliation(s)
- Haoliang Zhang
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Changgen Zeng
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Qian Zhu
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Dapeng Zhu
- Institute of Translational Medicine, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Biao Yu
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| |
Collapse
|
6
|
Pradhan K, Paul A, Rai D, Mishra AK, Balhara P, Kulkarni SS. Total Synthesis of Vibrio Cholerae O43 Tetrasaccharide Repeating Unit. J Org Chem 2024; 89:4019-4030. [PMID: 38403962 DOI: 10.1021/acs.joc.3c02886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Vibrio cholerae is a pathogen responsible for the deadly pandemic - cholera. The glycans present on the surface of various strains of V. cholerae are considered as potential vaccine candidates. The tetrasaccharide repeating unit (RU) of V. cholerae O43 is decorated with less-explored rare deoxy amino sugars like d-quinosamine and d-viosamine, along with a rare amino acid, N-acetyl-l-allothreonine. Herein, we report a detailed account of the total synthesis of V. cholerae O43 tetrasaccharide RU. In our earlier attempt, while a one-pot assembly of trisaccharide was successful, the final coupling with a fully functionalized d-viosamine donor was low yielding. The successful route involved employing the Fmoc-protected d-viosamine building block as a donor and a late-stage amide bond formation of the tetrasaccharide.
Collapse
Affiliation(s)
- Kabita Pradhan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Ankita Paul
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Diksha Rai
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Amar Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Preeti Balhara
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| |
Collapse
|
7
|
Ghotekar BK, Biswas S, Kulkarni SS. Circumventing aglycon transfer en route to the synthesis of pentasaccharide thioglycoside donor for the chain extension of Plesiomonas shigelloides strain 302-73 (serotype O1) repeating unit. Carbohydr Res 2024; 537:109073. [PMID: 38442682 DOI: 10.1016/j.carres.2024.109073] [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: 02/05/2024] [Revised: 02/29/2024] [Accepted: 02/29/2024] [Indexed: 03/07/2024]
Abstract
Herein we report a chemical synthesis of a pentasaccharide thioglycoside repeating unit of Plesiomonas shigelloides Strain 302-73 (Serotype O1), as a chain extension unit. In our synthetic endeavor we encountered multiple aglycon transfer reactions during glycosylations. This problem was obviated by employing a PMP group as a transient protecting group.
Collapse
Affiliation(s)
- Balasaheb K Ghotekar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, 400076, India
| | - Sayantan Biswas
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, 400076, India
| | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, 400076, India.
| |
Collapse
|
8
|
Qin C, Tian G, Hu J, Zou X, Yin J. Recent chemical synthesis and immunological evaluation of glycans related to bacterial lipopolysaccharides. Curr Opin Chem Biol 2024; 78:102424. [PMID: 38168589 DOI: 10.1016/j.cbpa.2023.102424] [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: 11/01/2023] [Revised: 12/12/2023] [Accepted: 12/14/2023] [Indexed: 01/05/2024]
Abstract
O-Antigens and core oligosaccharides from bacterial lipopolysaccharides (LPS) are often structurally unique and immunologically active, have become attractive targets in the development of antibacterial vaccines. Structurally well-defined and pure oligosaccharides can be used in identifying protective epitopes of the carbohydrate antigens, which is important for the design of an effective vaccine. Here, the recent progress on chemical synthesis and immunological evaluation of glycans related to O-antigens and core oligosaccharides from bacterial LPS are summarized.
Collapse
Affiliation(s)
- Chunjun Qin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi 214122, China
| | - Guangzong Tian
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi 214122, China
| | - Jing Hu
- Wuxi School of Medicine, Jiangnan University, Lihu Avenue 1800, Wuxi 214122, China
| | - Xiaopeng Zou
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi 214122, China
| | - Jian Yin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Lihu Avenue 1800, Wuxi 214122, China; School of Life Sciences and Health Engineering, Jiangnan University, Lihu Avenue 1800, Wuxi 214122, China.
| |
Collapse
|
9
|
Maji S, Ghotekar BK, Kulkarni SS. Total Synthesis of a Conjugation-Ready Tetrasaccharide Repeating Unit of Vibrio cholerae O:3 O-antigen Polysaccharide. Org Lett 2024; 26:745-750. [PMID: 38198674 DOI: 10.1021/acs.orglett.3c04225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Herein, we report the first total synthesis of the tetrasaccharide repeating unit of Vibrio cholerae O:3 O-antigen polysaccharide. The highly complex tetrasaccharide contains rare amino sugars such as d-bacillosamine and l-fucosamine, highly labile sugar ascarylose, and higher carbon sugar d-d-heptose. Stereoselective glycosylation of the notoriously reactive ascarylose with d-d-heptose, poor nucleophilicity of the axial C4-OH of l-fucosamine, and amide coupling are the key challenges encountered in the total synthesis, which was completed via a longest linear sequence of 23 steps in 4.2% overall yield.
Collapse
Affiliation(s)
- Soumyakanta Maji
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Balasaheb K Ghotekar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| |
Collapse
|
10
|
Mukherjee A, Ramirez D, Arora R, Arthur G, Schweizer F. Amphiphilic tribasic galactosamines potentiate rifampicin in Gram-negative bacteria at low Mg ++/Ca ++concentrations. Bioorg Med Chem Lett 2024; 97:129371. [PMID: 37301521 DOI: 10.1016/j.bmcl.2023.129371] [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: 03/27/2023] [Revised: 05/30/2023] [Accepted: 06/03/2023] [Indexed: 06/12/2023]
Abstract
Many antibiotics specific to Gram-positive bacteria like rifampicin (RIF) are inactive in Gram-negative bacteria because of outer membrane (OM) impermeability. Enhancing the OM permeability of these antibiotics with the help of OM perturbants is a promising strategy to develop new agents against Gram-negative bacteria. Here we report the synthesis and biological properties of amphiphilic tribasic galactosamines as potential RIF potentiators. Our results demonstrate that tribasic galactose-based amphiphiles potentiate RIF in multidrug-resistant Acinetobacter baumannii and Escherichia coli but not Pseudomonas aeruginosa in low salt-containing media. Under these conditions, lead compounds 20, 22 and 35 lowered the minimum inhibitory concentration of RIF by 64- to 256-fold against Gram-negative bacteria. However, the RIF-potentiating effect was reduced when bivalent Mg++ or Ca++ ions were added in the media at physiological concentrations. Overall, our results indicate that amphiphilic tribasic galactosamine-based compounds show reduced RIF-potentiating effects when compared to amphiphilic tobramycin antibiotics at physiological salt concentrations.
Collapse
Affiliation(s)
- Ayan Mukherjee
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Danyel Ramirez
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
| | - Rajat Arora
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
| | - Gilbert Arthur
- Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB R3E 0J9, Canada.
| | - Frank Schweizer
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada; Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB R3E 0J9 Canada.
| |
Collapse
|
11
|
Rai D, Kulkarni SS. Total Synthesis of Conjugation-Ready Tetrasaccharide Repeating Units of a Multidrug-Resistant Pathogen Acinetobacter baumannii Strain 34 and O5. Org Lett 2023; 25:8332-8337. [PMID: 37955403 DOI: 10.1021/acs.orglett.3c03417] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Herein, we report the first total synthesis of conjugation-ready tetrasaccharide repeating units of Acinetobacter baumannii strain 34 and O5 comprising a common disaccharide motif [α-l-FucpNAc-(1→4)-α-d-GalpNAcA]. The installation of 1,2-cis linkages employing a disarmed 2-azido-d-galacturonic acid derivative as the donor is addressed here. The synthesis of the tetrasaccharide repeating units of A. baumannii strain 34 and O5 is accomplished via the longest linear sequences of 19 steps in 9.8% and 21 steps in 8.4% overall yields, respectively.
Collapse
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
| |
Collapse
|
12
|
Abstract
The structural complexity of glycans poses a serious challenge in the chemical synthesis of glycosides, oligosaccharides and glycoconjugates. Glycan complexity, determined by composition, connectivity, and configuration far exceeds what nature achieves with nucleic acids and proteins. Consequently, glycoside synthesis ranks among the most complex tasks in organic synthesis, despite involving only a simple type of bond-forming reaction. Here, we introduce the fundamental principles of glycoside bond formation and summarize recent advances in glycoside bond formation and oligosaccharide synthesis.
Collapse
Affiliation(s)
- Conor J Crawford
- Department of Biomolecular Systems, Max Planck Institute for Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany.
| | - Peter H Seeberger
- Department of Biomolecular Systems, Max Planck Institute for Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany.
- Institute for Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| |
Collapse
|
13
|
Ghosh A, Kulkarni SS. Total Synthesis of a Linear Tetrasaccharide Repeating Unit of Vibrio vulnificus MO6-24. Org Lett 2023; 25:7242-7246. [PMID: 37756139 DOI: 10.1021/acs.orglett.3c02872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
Herein, we report the total synthesis of a linear, conjugation-ready, tetrasaccharide repeating unit of Vibrio vulnificus MO6-24, which is composed of rare amino sugars such as l-quinovosamine and d-galactosamine uronic acid. The key challenges addressed here are the synthesis of rare deoxy amino sugars, installation of consecutive 1,2-cis glycosidic linkages, and late-stage oxidation. Total synthesis of the target molecule was completed via a longest linear sequence of 29 steps in an overall yield of 0.7% starting from l-rhamnose.
Collapse
Affiliation(s)
- Antara Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| |
Collapse
|
14
|
Paul A, Rai D, Pradhan K, Balhara P, Mishra AK, Kulkarni SS. Total Synthesis of a Structurally Complex Tetrasaccharide Repeating Unit of Vibrio cholerae O43. Org Lett 2023; 25:6413-6418. [PMID: 37603587 DOI: 10.1021/acs.orglett.3c02430] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Herein we report the first total synthesis of a densely functionalized tetrasaccharide repeating unit of Vibrio cholerae O43, which contains rare deoxy amino sugars d-quinovosamine and d-viosamine attached with the rare amino acid N-acetyl-l-allothreonine. Synthesis of orthogonally protected rare sugars and unnatural amino acid building blocks, stereoselective construction of three consecutive 1,2-cis glycosidic linkages, amide coupling, and the presence of five nitrogen atoms dispersed over four sugar units as well as the carboxylic acid functionality make the total synthesis a formidable task.
Collapse
Affiliation(s)
- Ankita Paul
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Diksha Rai
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Kabita Pradhan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Preeti Balhara
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Amar Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| |
Collapse
|
15
|
Bharali MM, Santra A. Total Synthesis of 6-Deoxy-l-talose Containing a Pentasaccharide Repeating Unit of Acinetobacter baumannii K11 Capsular Polysaccharides. J Org Chem 2023; 88:8770-8780. [PMID: 37340701 DOI: 10.1021/acs.joc.3c00615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2023]
Abstract
Herein, we report a concise synthetic approach for the first total synthesis of a pentasaccharide repeating unit of Acinetobacter baumannii K11 capsular polysaccharides containing a rare sugar 6-deoxy-l-talose. The pentasaccharide was synthesized in a convergent manner using a [3 + 2] block glycosylation strategy. During this synthetic strive, we used a 2,2,2-trichloroethoxycarbonyl (Troc)-protected monosaccharide unit to achieve a high yield during the glycosylation to synthesize a trisaccharide, and chemoselective deprotection of the Troc group from the trisaccharide was carried out under a mild, pH-neutral condition, keeping the O-glycosidic bond, azido, and acid/base sensitive group intact. A thiotolylglycoside disaccharide donor containing 6-deoxy-l-talose was synthesized for the first time by the armed-disarmed glycosylation method between two thiotolylglycosides.
Collapse
Affiliation(s)
- Mrinmoy Manash Bharali
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Abhishek Santra
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
16
|
Paul A, Kulkarni SS. Total Synthesis of the Repeating Units of Proteus penneri 26 and Proteus vulgaris TG155 via a Common Disaccharide. Org Lett 2023; 25:4400-4405. [PMID: 37284758 DOI: 10.1021/acs.orglett.3c01618] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Herein, we report the first total synthesis of the trisaccharide and tetrasaccharide repeating units of P. penneri 26 and P. vulgaris TG155, respectively, having a common disaccharide unit, 3-α-l-QuipNAc-(1 → 3)-α-d-GlcpNAc-(1 →. Striking features of the targets are the presence of rare sugar units, l-quinovosamine and l-rhamnosamine, all joined through α-glycosidic linkages. Major challenges in the formation of 1,2-cis glycosidic linkages in the case of d-glucosamine, l-quinovosamine, and d-galactosamine have been addressed.
Collapse
Affiliation(s)
- Ankita Paul
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| |
Collapse
|
17
|
Zhou Y, Liao KS, Chen TY, Hsieh YSY, Wong CH. Effective Organotin-Mediated Regioselective Functionalization of Unprotected Carbohydrates. J Org Chem 2023. [PMID: 37167441 DOI: 10.1021/acs.joc.3c00397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Regioselective functionalization of unprotected carbohydrates at a secondary OH group in the presence of primary OH groups based on the commonly used organotin-mediated reaction has been improved. We found that the preactivation of the dibutylstannylene acetal intermediate with tetrabutylammonium bromide in toluene is a key to the improved condition for the efficient, high-yielding, and regioselective tosylation, benzoylation, or benzylation of unprotected carbohydrates. The counteranion of tetrabutylammonium ion with a weak coordination ability plays a crucial role in the improved regioselective reactions. A convenient access to the intermediates of synthetic value is also demonstrated in the organotin-mediated regioselective tosylation of unprotected carbohydrates, followed by the nucleophilic inversion reaction to give sulfur-containing and azide-modified carbohydrates.
Collapse
Affiliation(s)
- Yixuan Zhou
- Genomics Research Center, Academia Sinica, No. 128 Academia Road, Section 2, Nankang District, Taipei 11529, Taiwan
| | - Kuo-Shiang Liao
- Genomics Research Center, Academia Sinica, No. 128 Academia Road, Section 2, Nankang District, Taipei 11529, Taiwan
| | - Tzu-Yin Chen
- School of Pharmacy, College of Pharmacy, Taipei Medical University, No. 250 Wu-Hsing Street, Taipei City 110, Taiwan
| | - Yves S Y Hsieh
- Genomics Research Center, Academia Sinica, No. 128 Academia Road, Section 2, Nankang District, Taipei 11529, Taiwan
- School of Pharmacy, College of Pharmacy, Taipei Medical University, No. 250 Wu-Hsing Street, Taipei City 110, Taiwan
- Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology (KTH), AlbaNova University Center, SE-106 91 Stockholm, Sweden
| | - Chi-Huey Wong
- Genomics Research Center, Academia Sinica, No. 128 Academia Road, Section 2, Nankang District, Taipei 11529, Taiwan
- Department of Chemistry, Scripps Research, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| |
Collapse
|
18
|
Geulin A, Bourne-Branchu Y, Ben Ayed K, Lecourt T, Joosten A. Ferrier/Aza-Wacker/Epoxidation/Glycosylation (FAWEG) Sequence to Access 1,2-Trans 3-Amino-3-deoxyglycosides. Chemistry 2023; 29:e202203987. [PMID: 36793144 DOI: 10.1002/chem.202203987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Indexed: 02/17/2023]
Abstract
3-Amino-3-deoxyglycosides constitute an essential class of nitrogen-containing sugars. Among them, many important 3-amino-3-deoxyglycosides possess a 1,2-trans relationship. In view of their numerous biological applications, the synthesis of 3-amino-3-deoxyglycosyl donors giving rise to a 1,2-trans glycosidic linkage is thus an important challenge. Even though glycals are highly polyvalent donors, the synthesis and reactivity of 3-amino-3-deoxyglycals have been little studied. In this work, we describe a new sequence, involving a Ferrier rearrangement and subsequent aza-Wacker cyclization that allows the rapid synthesis of orthogonally protected 3-amino-3-deoxyglycals. Finally a 3-amino-3-deoxygalactal derivative was submitted for the first time to an epoxidation/glycosylation with high yield and great diastereoselectivity, highlighting FAWEG (Ferrier/Aza-Wacker/Epoxidation/Glycosylation) as a new approach to access 1,2-trans 3-amino-3-deoxyglycosides.
Collapse
Affiliation(s)
- Anselme Geulin
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000, Rouen, France
- 24 Rue Lucien Tesnière, 76130, Mont-Saint-Aignan, France
| | - Yann Bourne-Branchu
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000, Rouen, France
- 24 Rue Lucien Tesnière, 76130, Mont-Saint-Aignan, France
| | - Kawther Ben Ayed
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000, Rouen, France
- 24 Rue Lucien Tesnière, 76130, Mont-Saint-Aignan, France
| | - Thomas Lecourt
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000, Rouen, France
- 24 Rue Lucien Tesnière, 76130, Mont-Saint-Aignan, France
| | - Antoine Joosten
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000, Rouen, France
- 24 Rue Lucien Tesnière, 76130, Mont-Saint-Aignan, France
| |
Collapse
|
19
|
Rai D, Kulkarni SS. Total Synthesis of Trisaccharide Repeating Unit of Staphylococcus aureus Type 8 (CP8) Capsular Polysaccharide. Org Lett 2023; 25:1509-1513. [PMID: 36852946 DOI: 10.1021/acs.orglett.3c00290] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Herein, we report a highly efficient total synthesis of Staphylococcus aureus type 8 trisaccharide repeating unit in a lesser number of steps and high stereoselectivity. The complex trisaccharide contains rare amino sugars, viz., d-fucosamine, l-fucosamine, and 2-acetamido d-mannuronic acid. The installation of consecutive sterically hindered 1,2-cis glycosidic linkages, especially β-mannosylation, is the key challenge in this synthesis. The total synthesis of target molecule was completed via a longest linear sequence of 18 steps in 7.1% overall yield.
Collapse
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
| |
Collapse
|
20
|
Barrett K, Dube DH. Chemical tools to study bacterial glycans: a tale from discovery of glycoproteins to disruption of their function. Isr J Chem 2023; 63:e202200050. [PMID: 37324574 PMCID: PMC10266715 DOI: 10.1002/ijch.202200050] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Indexed: 01/02/2024]
Abstract
Bacteria coat themselves with a dense array of cell envelope glycans that enhance bacterial fitness and promote survival. Despite the importance of bacterial glycans, their systematic study and perturbation remains challenging. Chemical tools have made important inroads toward understanding and altering bacterial glycans. This review describes how pioneering discoveries from Prof. Carolyn Bertozzi's laboratory inspired our laboratory to develop sugar probes to facilitate the study of bacterial glycans. As described below, we used metabolic glycan labelling to install bioorthogonal reporters into bacterial glycans, ultimately permitting the discovery of a protein glycosylation system, the identification of glycosylation genes, and the development of metabolic glycan inhibitors. Our results have provided an approach to screen bacterial glycans and gain insight into their function, even in the absence of detailed structural information.
Collapse
Affiliation(s)
- Katharine Barrett
- Department of Chemistry & Biochemistry, Bowdoin College, 6600 College Station, Brunswick, ME 04011 USA
| | - Danielle H Dube
- Department of Chemistry & Biochemistry, Bowdoin College, 6600 College Station, Brunswick, ME 04011 USA
| |
Collapse
|
21
|
Abstract
Chemical synthesis of a hexasaccharide relevant to colanic acid, which bears a high prevalence of polyanionic and acetyl decoration, has been achieved, highlighting stereoselective glycosylation and effective installation of O-acetyl and pyruvate residues.
Collapse
Affiliation(s)
- Xin Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 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, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
| | - Biao Yu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
| |
Collapse
|
22
|
Novakova M, Das A, Alex C, Demchenko AV. Synthesis and glycosidation of building blocks of D-altrosamine. Front Chem 2022; 10:945779. [PMID: 36226114 PMCID: PMC9548543 DOI: 10.3389/fchem.2022.945779] [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: 05/16/2022] [Accepted: 08/05/2022] [Indexed: 11/13/2022] Open
Abstract
Presented herein is a streamlined synthesis of building blocks of a rare sugar D-altrosamine. Also investigated was the glycosylation of different glycosyl acceptors with differentially protected altrosamine donors. High facial stereoselectivity was achieved with 3-O-picoloyl donors and reactive glycosyl acceptors via the H-bond-mediated aglycone delivery (HAD) pathway. In contrast, glycosidations of the altrosamine donor equipped with the 3-O-benzoyl group were poorly stereoselective.
Collapse
Affiliation(s)
- Mariya Novakova
- Department of Chemistry, Saint Louis University, St. Louis, MO, United States
| | - Anupama Das
- Department of Chemistry, Saint Louis University, St. Louis, MO, United States
| | - Catherine Alex
- Department of Chemistry and Biochemistry, University of Missouri—St. Louis, One University Boulevard, St. Louis, MO, United States
| | - Alexei V. Demchenko
- Department of Chemistry, Saint Louis University, St. Louis, MO, United States
- Department of Chemistry and Biochemistry, University of Missouri—St. Louis, One University Boulevard, St. Louis, MO, United States
- *Correspondence: Alexei V. Demchenko,
| |
Collapse
|
23
|
Singh K, Kulkarni SS. Small Carbohydrate Derivatives as Potent Antibiofilm Agents. J Med Chem 2022; 65:8525-8549. [PMID: 35777073 DOI: 10.1021/acs.jmedchem.1c01039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Biofilm formation by most pathogenic bacteria is considered as one of the key mechanisms associated with virulence and antibiotic resistance. Biofilm-forming bacteria adhere to the surfaces of biological or implant medical devices and create communities within their self-produced extracellular matrix that are difficult to treat by existing antibiotics. There is an urgent need to synthesize and screen structurally diverse molecules for their antibiofilm activity that can remove or minimize the bacterial biofilm. The development of carbohydrate-based small molecules as antibiofilm agents holds a great promise in addressing the problem of the eradication of biofilm-related infections. Owing to their structural diversity and specificity, the sugar scaffolds are valuable entities for developing antibiofilm agents. In this perspective, we discuss the literature pertaining to carbohydrate-based natural antibiofilm agents and provide an overview of the design, activity, and mode of action of potent synthetic carbohydrate-based molecules.
Collapse
Affiliation(s)
- Kartikey Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India 400076
| | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, India 400076
| |
Collapse
|
24
|
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: 0.5] [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
| |
Collapse
|
25
|
Zhou Y, Liao KS, Li ST, Wu CY. Facile and Scalable Route to Access Rare Deoxy Amino Sugars for Nonulosonic Acid Aldolase Biosynthesis. Front Chem 2022; 10:865026. [PMID: 35783215 PMCID: PMC9245050 DOI: 10.3389/fchem.2022.865026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 04/27/2022] [Indexed: 01/16/2023] Open
Abstract
We presented a facile and scalable route for the synthesis of di-azido sugars via one-pot double inversion of the mono-benzoyl sugars by TBAN3 and studied the dependency pattern between solvent and protecting groups as well as the configuration of the neighboring and leaving groups. Moreover, we developed a chemical synthetic strategy for pseudaminic acid precursors (11 steps in 49%). Furthermore, we discussed the configuration of nonulosonic acid precursors for specificity of PseI and PmNanA enzymatic synthesis, permitting us to synthesize new nonulosonic acid derivatives for accessing Pse isomers.
Collapse
|
26
|
QIN CJ, DING MR, TIAN GZ, ZOU XP, FU JJ, HU J, YIN J. Chemical approaches towards installation of rare functional groups in bacterial surface glycans. Chin J Nat Med 2022; 20:401-420. [DOI: 10.1016/s1875-5364(22)60177-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Indexed: 11/24/2022]
|
27
|
Pal D, Chaudhury A, Mukhopadhyay B. Chemical Synthesis of the Linker‐Armed Trisaccharide Repeating Unit of the O‐antigen from Pseudomonas putida BIM B‐1100. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Debasish Pal
- Indian Institute of Science Education and Research Kolkata Department of Chemical Sciences INDIA
| | - Aritra Chaudhury
- Indian Institute of Science Education and Research Kolkata Department of Chemical Sciences INDIA
| | - Balaram Mukhopadhyay
- Indian Institute of Science Education and Research-Kolkata IISER-K Department of Chemical Sciences Mohanpur Campus, Nadia 741252 Nadia INDIA
| |
Collapse
|
28
|
QIN CJ, HOU HL, DING MR, QI YK, TIAN GZ, ZOU XP, FU JJ, HU J, YIN J. Chemical synthesis of a synthetically useful L-galactosaminuronic acid building block. Chin J Nat Med 2022; 20:387-392. [DOI: 10.1016/s1875-5364(22)60149-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Indexed: 11/03/2022]
|
29
|
Luong P, Ghosh A, Moulton KD, Kulkarni SS, Dube DH. Synthesis and Application of Rare Deoxy Amino l-Sugar Analogues to Probe Glycans in Pathogenic Bacteria. ACS Infect Dis 2022; 8:889-900. [PMID: 35302355 PMCID: PMC9445936 DOI: 10.1021/acsinfecdis.2c00060] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Bacterial cell envelope glycans are compelling antibiotic targets as they are critical for strain fitness and pathogenesis yet are virtually absent from human cells. However, systematic study and perturbation of bacterial glycans remains challenging due to their utilization of rare deoxy amino l-sugars, which impede traditional glycan analysis and are not readily available from natural sources. The development of chemical tools to study bacterial glycans is a crucial step toward understanding and altering these biomolecules. Here we report an expedient methodology to access azide-containing analogues of a variety of unusual deoxy amino l-sugars starting from readily available l-rhamnose and l-fucose. Azide-containing l-sugar analogues facilitated metabolic profiling of bacterial glycans in a range of Gram-negative bacteria and revealed differential utilization of l-sugars in symbiotic versus pathogenic bacteria. Further application of these probes will refine our knowledge of the glycan repertoire in diverse bacteria and aid in the design of novel antibiotics.
Collapse
Affiliation(s)
- Phuong Luong
- Department of Chemistry & Biochemistry, Bowdoin College, 6600 College Station, Brunswick, Maine 04011, United States
| | - Antara Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400-076, India
| | - Karen D. Moulton
- Department of Chemistry & Biochemistry, Bowdoin College, 6600 College Station, Brunswick, Maine 04011, United States
| | - Suvarn S. Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400-076, India
| | - Danielle H. Dube
- Department of Chemistry & Biochemistry, Bowdoin College, 6600 College Station, Brunswick, Maine 04011, United States
| |
Collapse
|
30
|
Zhang H, Wang X, Meng Y, Yang X, Zhao Q, Gao J. Total Synthesis of the Tetrasaccharide Haptens of Vibrio vulnificus MO6-24 and BO62316 and Immunological Evaluation of Their Protein Conjugates. JACS AU 2022; 2:97-108. [PMID: 35098226 PMCID: PMC8790746 DOI: 10.1021/jacsau.1c00190] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Indexed: 05/15/2023]
Abstract
Vibrio vulnificus is a human pathogen that can cause fatal septicemia and necrotizing infections with a high lethal rate exceeding 50%. V. vulnificus MO6-24 and BO62316 are two predominant virulent strains associated with approximately one-third of the clinical infections. The capsular polysaccharides (CPSs) of V. vulnificus consist of several structurally unique sugars and are excellent targets for developing effective glycoconjugate vaccines. This article describes the first total synthesis of the challenging tetrasaccharide repeating units of V. vulnificus MO6-24 and BO62316 CPSs. A key feature of this synthesis was the assembly of the tetrasaccharide skeleton using a 3,4-branched trisaccharide as the glycosyl donor. A modified TEMPO/BAIB oxidation protocol was developed to directly convert α-d-GalN into α-d-GalAN in not only disaccharides but also tri- and tetrasaccharides. The synthetic haptens were covalently coupled with CRM197 carrier protein via a bifunctional linker. Preliminary immunological studies of the resultant glycoconjugates in mice revealed their high efficacy to induce robust T-cell-dependent immune responses, and the IgG antibodies elicited by each glycoconjugate showed weak cross-reactivity with the other synthetic tetrasaccharide.
Collapse
Affiliation(s)
- Han Zhang
- National Glycoengineering
Research Center, Shandong Key Laboratory of Carbohydrate Chemistry
and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation
of Carbohydrate-based Medicine, Shandong
University, Qingdao, Shandong 266237, China
| | - Xiaohan Wang
- National Glycoengineering
Research Center, Shandong Key Laboratory of Carbohydrate Chemistry
and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation
of Carbohydrate-based Medicine, Shandong
University, Qingdao, Shandong 266237, China
| | - Youhui Meng
- National Glycoengineering
Research Center, Shandong Key Laboratory of Carbohydrate Chemistry
and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation
of Carbohydrate-based Medicine, Shandong
University, Qingdao, Shandong 266237, China
| | - Xiaoyu Yang
- National Glycoengineering
Research Center, Shandong Key Laboratory of Carbohydrate Chemistry
and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation
of Carbohydrate-based Medicine, Shandong
University, Qingdao, Shandong 266237, China
| | - Qingpeng Zhao
- National Glycoengineering
Research Center, Shandong Key Laboratory of Carbohydrate Chemistry
and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation
of Carbohydrate-based Medicine, Shandong
University, Qingdao, Shandong 266237, China
| | - Jian Gao
- National Glycoengineering
Research Center, Shandong Key Laboratory of Carbohydrate Chemistry
and Glycobiology, NMPA Key Laboratory for Quality Research and Evaluation
of Carbohydrate-based Medicine, Shandong
University, Qingdao, Shandong 266237, China
| |
Collapse
|
31
|
Hettiarachchi IL, Meng S, Chahine M, Li X, Zhu J. Stereoselective β-Mannosylation via Anomeric O-Alkylation with L-Sugar-Derived Electrophiles. European J Org Chem 2021; 2021:6682-6687. [PMID: 35990817 PMCID: PMC9389860 DOI: 10.1002/ejoc.202100903] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Indexed: 02/04/2024]
Abstract
A total synthesis of the trisaccharide repeat unit of Salmonella serogroup E1 O-antigen is reported. This synthesis features a key β-mannosylation reaction via cesium carbonate-mediated anomeric O-alkylation of a partially protected D-mannose with an L-fucose-derived electrophile for the first time.
Collapse
Affiliation(s)
- Ishani Lakshika Hettiarachchi
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, 2801 W. Bancroft Street, Toledo, Ohio 43606, United States. https://www.utoledo.edu/nsm/chemistry/people/Webpages/Zhu.html
| | - Shuai Meng
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, 2801 W. Bancroft Street, Toledo, Ohio 43606, United States. https://www.utoledo.edu/nsm/chemistry/people/Webpages/Zhu.html
| | - Mira Chahine
- Department of Natural Sciences, University of Michigan-Dearborn, 4901 Evergreen Road, Dearborn, Michigan 48128, United States
| | - Xiaohua Li
- Department of Natural Sciences, University of Michigan-Dearborn, 4901 Evergreen Road, Dearborn, Michigan 48128, United States
| | - Jianglong Zhu
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, 2801 W. Bancroft Street, Toledo, Ohio 43606, United States. https://www.utoledo.edu/nsm/chemistry/people/Webpages/Zhu.html
| |
Collapse
|
32
|
Zhang S, Seeberger PH. Total Syntheses of Conjugation-Ready Repeating Units of Acinetobacter baumannii AB5075 for Glycoconjugate Vaccine Development. Chemistry 2021; 27:17444-17451. [PMID: 34665908 PMCID: PMC9298076 DOI: 10.1002/chem.202103234] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Indexed: 12/16/2022]
Abstract
Acinetobacter baumannii is an opportunistic pathogen that causes serious nosocomial infections. One of the multidrug-resistant strains, AB5075, can result in bacteremia, pneumonia and wound infections associated with high morbidity and mortality. The structurally unique glycans on the surface of these bacteria are attractive targets for the development of glycoconjugate vaccines. Here, we report the first total synthesis of the densely functionalized trisaccharide repeating unit of A. baumannii AB5075 as well as two analogues. The construction of 1,2-cis linkages between the rare sugars relies on a double-serial inversion strategy. The judicious selection of building blocks and reaction conditions allowed for stereoselective glycosylations, the installation of acetamido groups and the (S)-3-hydroxybutanoyl chain.
Collapse
Affiliation(s)
- Shuo Zhang
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
- Institute of Chemistry and BiochemistryFreie Universität BerlinArnimallee 2214195BerlinGermany
| | - Peter H. Seeberger
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
- Institute of Chemistry and BiochemistryFreie Universität BerlinArnimallee 2214195BerlinGermany
| |
Collapse
|
33
|
Kooner AS, Diaz S, Yu H, Santra A, Varki A, Chen X. Chemoenzymatic Synthesis of Sialosides Containing 7- N- or 7,9-Di- N-acetyl Sialic Acid as Stable O-Acetyl Analogues for Probing Sialic Acid-Binding Proteins. J Org Chem 2021; 86:14381-14397. [PMID: 34636559 DOI: 10.1021/acs.joc.1c01091] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel chemoenzymatic synthon strategy has been developed to construct a comprehensive library of α2-3- and α2-6-linked sialosides containing 7-N- or 7,9-di-N-acetyl sialic acid, the stable analogue of naturally occurring 7-O-acetyl- or 7,9-di-O-acetyl-sialic acid. Diazido and triazido-mannose derivatives that were readily synthesized chemically from inexpensive galactose were shown to be effective chemoenzymatic synthons. Together with bacterial sialoside biosynthetic enzymes with remarkable substrate promiscuity, they were successfully used in one-pot multienzyme (OPME) sialylation systems for highly efficient synthesis of sialosides containing multiple azido groups. Conversion of the azido groups to N-acetyl groups generated the desired sialosides. The hydrophobic and UV-detectable benzyloxycarbonyl (Cbz) group introduced in the synthetic acceptors of sialyltransferases was used as a removable protecting group for the propylamine aglycon of the target sialosides. The resulting N-acetyl sialosides were novel stable probes for sialic acid-binding proteins such as plant lectin MAL II, which bond strongly to sialyl T antigens with or without an N-acetyl at C7 or at both C7 and C9 in the sialic acid.
Collapse
Affiliation(s)
- Anoopjit Singh Kooner
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Sandra Diaz
- Department of Medicine, University of California, San Diego, California 92093, United States.,Department of Cellular & Molecular Medicine, Glycobiology Research and Training Center, University of California, San Diego, California 92093, United States
| | - Hai Yu
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Abhishek Santra
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Ajit Varki
- Department of Medicine, University of California, San Diego, California 92093, United States.,Department of Cellular & Molecular Medicine, Glycobiology Research and Training Center, University of California, San Diego, California 92093, United States
| | - Xi Chen
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| |
Collapse
|
34
|
Suh CE, Carder HM, Wendlandt AE. Selective Transformations of Carbohydrates Inspired by Radical-Based Enzymatic Mechanisms. ACS Chem Biol 2021; 16:1814-1828. [PMID: 33988380 DOI: 10.1021/acschembio.1c00190] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Enzymes are a longstanding source of inspiration for synthetic reaction development. However, enzymatic reactivity and selectivity are frequently untenable in a synthetic context, as the principles that govern control in an enzymatic setting often do not translate to small molecule catalysis. Recent synthetic methods have revealed the viability of using small molecule catalysts to promote highly selective radical-mediated transformations of minimally protected sugar substrates. These transformations share conceptual similarities with radical SAM enzymes found in microbial carbohydrate biosynthesis and present opportunities for synthetic chemists to access microbial and unnatural carbohydrate building blocks without the need for protecting groups or lengthy synthetic sequences. Here, we highlight strategies through which radical reaction pathways can enable the site-, regio-, and diastereoselective transformation of minimally protected carbohydrates in both synthetic and enzymatic systems.
Collapse
Affiliation(s)
- Carolyn E. Suh
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hayden M. Carder
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Alison E. Wendlandt
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
35
|
Lin MH, Chang CW, Chiang TY, Dhurandhare VM, Wang CC. Thiocarbonyl as a Switchable Relay-Auxiliary Group in Carbohydrate Synthesis. Org Lett 2021; 23:7313-7318. [PMID: 34269593 DOI: 10.1021/acs.orglett.1c01968] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A multifunctional O-phenyl thiocarbonyl (O(C═S)OPh) group was introduced in glycosylation reactions. This auxiliary group exhibits three features (1) C6-long-range participation effect, (2) relay activation, and (3) switchable promoter-controlled carbonylation, which enables the facile synthesis of both 6-deoxy glucoside and 6-alcohol glucoside. In addition, we successfully quantified the extent of the C6-acyl participation effect and developed its application toward the α-trisaccharide motif.
Collapse
|
36
|
Li J, Nguyen HM. A Mechanistic Probe into 1,2- cis Glycoside Formation Catalyzed by Phenanthroline and Further Expansion of Scope. Adv Synth Catal 2021; 363:4054-4066. [PMID: 35431716 PMCID: PMC9009828 DOI: 10.1002/adsc.202100639] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Indexed: 12/20/2022]
Abstract
Phenanthroline, a rigid and planar compound with two fused pyridine rings, has been used as a powerful ligand for metals and a binding agent for DNA/RNA. We discovered that phenanthroline could be used as a nucleophilic catalyst to efficiently access high yielding and diastereoselective α-1,2-cis glycosides through the coupling of hydroxyl acceptors with α-glycosyl bromide donors. We have conducted an extensive investigation into the reaction mechanism, wherein the two glycosyl phenanthrolinium ion intermediates, a 4C1 chair-liked β-conformer and a B2,5 boat-like α-conformer, have been detected in a ratio of 2:1 (β:α) using variable temperature NMR experiments. Furthermore, NMR studies illustrate that a hydrogen bonding is formed between the second nitrogen atom of phenanthroline and the C1-anomeric hydrogen of sugar moiety to stabilize the phenanthrolinium ion intermediates. To obtain high α-1,2-cis stereoselectivity, a Curtin-Hammett scenario was proposed wherein interconversion of the 4C1 chair-like β-conformer and B2,5 boat-like α-conformer is more rapid than nucleophilic addition. Hydroxyl attack takes place from the α-face of the more reactive 4C1 β-phenanthrolinium intermediate to give an α-anomeric product. The utility of the phenanthroline catalysis is expanded to sterically hindered hydroxyl nucleophiles and chemoselective coupling of an alkyl hydroxyl group in the presence of a free C1-hemiacetal. In addition, the phenanthroline-based catalyst has a pronounced effect on site-selective couplings of triol motifs and orthogonally activates the anomeric bromide leaving group over the anomeric fluoride and sulfide counterparts.
Collapse
Affiliation(s)
- Jiayi Li
- Department of Chemistry, Wayne State University, Detroit, Michigan, 48202, United States
| | - Hien M Nguyen
- Department of Chemistry, Wayne State University, Detroit, Michigan, 48202, United States
| |
Collapse
|
37
|
Biswas S, Ghotekar BK, Kulkarni SS. Total Synthesis of the All-Rare Sugar-Containing Pentasaccharide Repeating Unit of the O-Polysaccharide of Plesiomonas shigelloides Strain 302-73 (Serotype O1). Org Lett 2021; 23:6137-6142. [PMID: 34291950 DOI: 10.1021/acs.orglett.1c02239] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
First total synthesis of the conjugation-ready pentasaccharide repeating unit of Plesiomonas shigelloides strain 302-73 (serotype O1) is reported. The complex target pentasaccharide is composed of all-rare amino sugars such as orthogonally functionalized d-bacillosamine, l-fucosamine, and l-pneumosamine linked through four consecutive α-linkages. The poor nucleophilicity of axial 4-OH of l-fucosamine and stereoselective glycosylations are the key challenges in the total synthesis, which was completed via a longest linear sequence of 27 steps in 3% overall yield.
Collapse
Affiliation(s)
- Sayantan Biswas
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Balasaheb K Ghotekar
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| |
Collapse
|
38
|
Vibhute AM, Tamai H, Logviniuk D, Jones PG, Fridman M, Werz DB. Azide-Functionalized Derivatives of the Virulence-Associated Sugar Pseudaminic Acid: Chiral Pool Synthesis and Labeling of Bacteria. Chemistry 2021; 27:10595-10600. [PMID: 33769621 PMCID: PMC8360151 DOI: 10.1002/chem.202100443] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Indexed: 12/19/2022]
Abstract
Pseudaminic acid (Pse) is a significant prokaryotic monosaccharide found in important Gram-negative and Gram-positive bacteria. This unique sugar serves as a component of cell-surface-associated glycans or glycoproteins and is associated with their virulence. We report the synthesis of azidoacetamido-functionalized Pse derivatives as part of a search for Pse-derived metabolic labeling reagents. The synthesis was initiated with d-glucose (Glc), which served as a cost-effective chiral pool starting material. Key synthetic steps involve the conversion of C1 of Glc into the terminal methyl group of Pse, and inverting deoxyaminations at C3 and C5 of Glc followed by backbone elongation with a three-carbon unit using the Barbier reaction. Metabolic labeling experiments revealed that, of the four Pse derivatives, ester-protected C5 azidoacetamido-Pse successfully labeled cells of Pse-expressing Gram-positive and Gram-negative strains. No labeling was observed in cells of non-Pse-expressing strains. The ester-protected and C5 azidoacetamido-functionalized Pse is thus a useful reagent for the identification of bacteria expressing this unique virulence-associated nonulosonic acid.
Collapse
Affiliation(s)
- Amol M Vibhute
- Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106, Braunschweig, Germany
| | - Hideki Tamai
- Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106, Braunschweig, Germany
| | - Dana Logviniuk
- School of Chemistry, Raymond and Beverley Sackler Faculty of Exact Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel
| | - Peter G Jones
- Technische Universität Braunschweig, Institute of Inorganic and Analytical Chemistry, Hagenring 30, 38106, Braunschweig, Germany
| | - Micha Fridman
- School of Chemistry, Raymond and Beverley Sackler Faculty of Exact Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel
| | - Daniel B Werz
- Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106, Braunschweig, Germany
| |
Collapse
|
39
|
Luong P, Dube DH. Dismantling the bacterial glycocalyx: Chemical tools to probe, perturb, and image bacterial glycans. Bioorg Med Chem 2021; 42:116268. [PMID: 34130219 DOI: 10.1016/j.bmc.2021.116268] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 05/27/2021] [Accepted: 06/01/2021] [Indexed: 12/20/2022]
Abstract
The bacterial glycocalyx is a quintessential drug target comprised of structurally distinct glycans. Bacterial glycans bear unusual monosaccharide building blocks whose proper construction is critical for bacterial fitness, survival, and colonization in the human host. Despite their appeal as therapeutic targets, bacterial glycans are difficult to study due to the presence of rare bacterial monosaccharides that are linked and modified in atypical manners. Their structural complexity ultimately hampers their analytical characterization. This review highlights recent advances in bacterial chemical glycobiology and focuses on the development of chemical tools to probe, perturb, and image bacterial glycans and their biosynthesis. Current technologies have enabled the study of bacterial glycosylation machinery even in the absence of detailed structural information.
Collapse
Affiliation(s)
- Phuong Luong
- Department of Chemistry & Biochemistry, Bowdoin College, 6600 College Station, Brunswick, ME 04011, USA
| | - Danielle H Dube
- Department of Chemistry & Biochemistry, Bowdoin College, 6600 College Station, Brunswick, ME 04011, USA.
| |
Collapse
|
40
|
Rai D, Sanapala SR, Kulkarni SS. Serendipitous one-pot synthesis of chiral dienes from pyranosidic 2,4-bistriflates. Carbohydr Res 2021; 505:108351. [PMID: 34044223 DOI: 10.1016/j.carres.2021.108351] [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: 04/27/2021] [Revised: 05/12/2021] [Accepted: 05/14/2021] [Indexed: 11/28/2022]
Abstract
Attempted nucleophilic displacements of l-rhamnosyl 2,4-bistriflates led to serendipitous formation of a chiral diene via competing cascade eliminations. The reaction also followed the same pathway with d-rhamnosyl and d-mannosyl 2,4-bistriflates substrates providing access to dienes with opposite stereochemistry. The reaction presumably proceeds through E2 elimination of C2 triflate followed by allylic rearrangement. The easily accessible chiral dienes would be useful in the synthesis of natural products.
Collapse
Affiliation(s)
- Diksha Rai
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | | | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India.
| |
Collapse
|
41
|
Paul A, Kulkarni SS. Synthesis of L-hexoses: an Update. CHEM REC 2021; 21:3224-3237. [PMID: 34075685 DOI: 10.1002/tcr.202100087] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 05/11/2021] [Accepted: 05/11/2021] [Indexed: 01/01/2023]
Abstract
Over the years, carbohydrates have increasingly become an important class of compounds contributing significantly to the target specific drug discovery and vaccine development. Several oligosaccharides contain L-hexoses that are biologically relevant as therapeutic and diagnostic tools. Since, L-hexoses and deoxy L-hexoses are not readily available in large amount and pure form, attention is drawn towards development of cost effective and high yielding synthetic routes for their procurement. In this review we give an update on the recent developments in strategies for synthesis of L-hexoses and deoxy L-hexoses.
Collapse
Affiliation(s)
- Ankita Paul
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| |
Collapse
|
42
|
Hussain H, Ali I, Elizbit, Hussain W, Mamadalieva NZ, Hussain A, Ali M, Ahmed I, Ullah I, Green IR. Synthetic Studies towards Fungal glycosides: An Overview. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999201105160034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Fungi have provided intriguing chemical diversity and have additionally proven to
be a tremendous source for a great variety of therapeutic molecules. Various fungal glycosides
have been reported from fungi and the majority of these metabolites possess cytotoxic and
antimicrobial effects. Although natural products are obtained in most cases in small amounts
from the specific natural source, total syntheses of these valuable commodities remain one of
the most important ways of obtaining them on a large scale for more detailed and comprehensive
biological studies. In addition, the total synthesis of secondary metabolites is a useful
tool, not only for the disclosure of novel complex pharmacologically active molecules but also
for the establishment of cutting-edge methodologies in synthetic chemistry. Numerous fungal
glycosides have been synthesized in the last four decades regarding the following natural
product classes viz., tetramic acid glycosides (epicoccamides A and D), polyketide glycosides (TMC-151C), 2-pyrone
glycosides (epipyrone A), diterpene glycosides (sordarin), depside glycosides (CRM646-A and –B, KS-501 and KS-
502), caloporosides (caloporoside A), glycolipids (emmyguyacins A and B, acremomannolipin A), and cerebrosides
(cerebroside B, Asperamide B, phalluside-1, Sch II). The current literature review about fungal glycoside synthetic
studies is, therefore, of interest for a wide range of scientists and researchers in the field of organic, natural product,
and medicinal chemists as it outlines key strategies of fungal glycosides and, in particular, glycosylation, the known
biological and pharmacological effects of these natural compounds have afforded a new dimension of exposure.
Collapse
Affiliation(s)
- Hidayat Hussain
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany
| | - Iftikhar Ali
- Shandong Key Laboratory of TCM Quality Control Technology, Shandong Analysis and Test Center, Jinan, Shandong Province (250014), China
| | - Elizbit
- Department Materials Engineering, National University of Sciences and Technology (NUST) H12, Islamabad, Pakistan
| | - Wahid Hussain
- Department of Botany, Government Post Graduate College Parachinar, District Kurram, Pakistan
| | - Nilufar Z. Mamadalieva
- Institute of the Chemistry of Plant Substances of the Academy Sciences of Uzbekistan, Tashkent 100170, Uzbekistan
| | - Amjad Hussain
- Department of Chemistry University of Okara, Okara, Pakistan
| | - Maroof Ali
- College of life Sciences, Anhui Normal University, Wuhu 241000, China
| | - Ishtiaq Ahmed
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, England, United Kingdom
| | - Izhar Ullah
- Department of Biotechnology, University of Kotli, Azad Jammu and Kashmir, Pakistan
| | - Ivan R. Green
- Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland, Stellenbosch 7600, South Africa
| |
Collapse
|
43
|
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
| |
Collapse
|
44
|
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
| |
Collapse
|
45
|
Anomeric configuration-dependence of the Lattrell-Dax epimerization from D-glucose to synthetically useful D-allose derivatives. Chin J Nat Med 2020; 18:723-728. [DOI: 10.1016/s1875-5364(20)60012-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Indexed: 11/19/2022]
|
46
|
Sangwan R, Khanam A, Mandal PK. An Overview on the Chemical
N
‐Functionalization of Sugars and Formation of
N
‐Glycosides. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000813] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Rekha Sangwan
- Medicinal and Process Chemistry Division CSIR‐Central Drug Research Institute Sector 10, Jankipuram extn., Sitapur Road 226 031 Lucknow India
- Academy of Scientific and Innovative Research (AcSIR) 201002 Ghaziabad India
| | - Ariza Khanam
- Medicinal and Process Chemistry Division CSIR‐Central Drug Research Institute Sector 10, Jankipuram extn., Sitapur Road 226 031 Lucknow India
| | - Pintu Kumar Mandal
- Medicinal and Process Chemistry Division CSIR‐Central Drug Research Institute Sector 10, Jankipuram extn., Sitapur Road 226 031 Lucknow India
- Academy of Scientific and Innovative Research (AcSIR) 201002 Ghaziabad India
| |
Collapse
|
47
|
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.
Collapse
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
| |
Collapse
|
48
|
Flack EKP, Chidwick HS, Guchhait G, Keenan T, Budhadev D, Huang K, Both P, Mas Pons J, Ledru H, Rui S, Stafford GP, Shaw JG, Galan MC, Flitsch S, Thomas GH, Fascione MA. Biocatalytic Transfer of Pseudaminic Acid (Pse5Ac7Ac) Using Promiscuous Sialyltransferases in a Chemoenzymatic Approach to Pse5Ac7Ac-Containing Glycosides. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02189] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Emily K. P. Flack
- Department of Chemistry, University of York, York YO10 5DD, United Kindgom
| | | | - Goutam Guchhait
- Department of Chemistry, University of York, York YO10 5DD, United Kindgom
| | - Tessa Keenan
- Department of Chemistry, University of York, York YO10 5DD, United Kindgom
| | - Darshita Budhadev
- Department of Chemistry, University of York, York YO10 5DD, United Kindgom
| | - Kun Huang
- Manchester Institute of Biotechnology, School of Chemistry, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kindgom
| | - Peter Both
- Manchester Institute of Biotechnology, School of Chemistry, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kindgom
| | - Jordi Mas Pons
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kindgom
| | - Helene Ledru
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kindgom
| | - Shengtao Rui
- Department of Infection and Immunity, University of Sheffield, Sheffield S10 2RX, United Kindgom
| | - Graham P. Stafford
- School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, United Kindgom
| | - Jonathan G. Shaw
- Department of Infection and Immunity, University of Sheffield, Sheffield S10 2RX, United Kindgom
| | - M. Carmen Galan
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kindgom
| | - Sabine Flitsch
- Manchester Institute of Biotechnology, School of Chemistry, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kindgom
| | - Gavin H. Thomas
- Department of Biology, University of York, York YO10 5DD, United Kindgom
| | - Martin A. Fascione
- Department of Chemistry, University of York, York YO10 5DD, United Kindgom
| |
Collapse
|
49
|
Affiliation(s)
- Kabita Pradhan
- Department of Chemistry Indian Institute of Technology Bombay 400076 Powai Mumbai India
| | - Suvarn S. Kulkarni
- Department of Chemistry Indian Institute of Technology Bombay 400076 Powai Mumbai India
| |
Collapse
|
50
|
Zhang Y, Zhang J, Ponomareva LV, Cui Z, Van Lanen SG, Thorson JS. Sugar-Pirating as an Enabling Platform for the Synthesis of 4,6-Dideoxyhexoses. J Am Chem Soc 2020; 142:9389-9395. [PMID: 32330028 DOI: 10.1021/jacs.9b13766] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
An efficient divergent synthetic strategy that leverages the natural product spectinomycin to access uniquely functionalized monosaccharides is described. Stereoselective 2'- and 3'-reduction of key spectinomycin-derived intermediates enabled facile access to all eight possible 2,3-stereoisomers of 4,6-dideoxyhexoses as well as representative 3,4,6-trideoxysugars and 3,4,6-trideoxy-3-aminohexoses. In addition, the method was applied to the synthesis of two functionalized sugars commonly associated with macrolide antibiotics-the 3-O-alkyl-4,6-dideoxysugar d-chalcose and the 3-N-alkyl-3,4,6-trideoxysugar d-desosamine.
Collapse
Affiliation(s)
- Yinan Zhang
- Jiangsu Key Laboratory for Functional Substance of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China.,Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Jianjun Zhang
- Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Larissa V Ponomareva
- Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Zheng Cui
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Steven G Van Lanen
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Jon S Thorson
- Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States.,Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| |
Collapse
|