1
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Cunha VLS, O'Doherty GA, Lowary TL. Exploring a De Novo Route to Bradyrhizose: Synthesis and Isomeric Equilibrium of Bradyrhizose Diastereomers ≠. Chemistry 2024; 30:e202400886. [PMID: 38590211 PMCID: PMC11168859 DOI: 10.1002/chem.202400886] [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: 03/02/2024] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 04/10/2024]
Abstract
A de novo asymmetric strategy for the synthesis of d-bradyrhizose diastereomers from an achiral ketoenolester precursor is described. Key transformations used in the stereodivergent approach include two Noyori asymmetric reductions, an Achmatowicz rearrangement, diastereoselective alkene oxidations, and the first example of a palladium(0)-catalyzed glycosylation of a vinylogous pyranone. The isomeric composition of the bicyclic reducing sugars obtained was analyzed and their behaviour was compared to the natural product, revealing key stereocentres that impact the overall distribution.
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Affiliation(s)
- Vitor L S Cunha
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
- Institute of Biological Chemistry, Academia Sinica, Nangang, Taipei, 11529, Taiwan
| | - George A O'Doherty
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts, 02115, USA
| | - Todd L Lowary
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
- Institute of Biological Chemistry, Academia Sinica, Nangang, Taipei, 11529, Taiwan
- Institute of Biochemical Sciences, Institute of Biological Chemistry, National Taiwan University, Taipei, 106, Taiwan
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2
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Liu A, Gao L, Tang X, Yang X, Liu X, Xie W, Qi J, Li W. Synthesis and Structural Revision of a Natural Tetrasaccharide from Starfish Asterias rollestoni Bell. Chemistry 2024; 30:e202400946. [PMID: 38516955 DOI: 10.1002/chem.202400946] [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: 03/07/2024] [Revised: 03/20/2024] [Accepted: 03/22/2024] [Indexed: 03/23/2024]
Abstract
Starfish provide important saponins with diverse bioactivities as the secondary metabolites, among which 2-O-glycosylated glycosides are commonly found. Preparation of those 1,2-trans 2-O-glycosylated glycosides usually relies on 2-O-acyl participation requiring the selective installation and cleavage of 2-O-acyl groups. A convergent synthesis using 2-O-glycosylated oligosaccharide donors would be more straightforward but also pose greater challenges. Herein, we report a convergent synthesis of a distinctive tetrasaccharide isolated from starfish Asterias rollestoni Bell. Dual 2-(diphenylphosphinoyl)acetyl (DPPA) groups at O3 and O4 on galactose moiety led to high β-selectivities (β/α=12/1 or β only) in the challenging [2+2] glycosylation, giving the desired tetrasaccharides in >90 % yields from the 2-O-glycosylated disaccharide donors. These synthetic studies have also unambiguously revised the structure of these natural tetrasaccharides. This work would facilitate further studies on new inhibitors of α-glucosidase as hypoglycemic drugs.
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Affiliation(s)
- Ao Liu
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China
| | - Longwei Gao
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China
| | - Xintong Tang
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China
| | - Xudong Yang
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu, 211198, China
| | - Xianglai Liu
- 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
| | - Jin Qi
- School of Traditional Chinese 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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3
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Tang X, Zhou Y, Wang Y, Lin Y, Pan S, Che Q, Sang J, Gao Z, Zhang W, Wang Y, Li G, Gao L, Wang Z, Yang X, Liu A, Wang S, Yu B, Xu P, Wang Z, Zhang Z, Yang P, Xie W, Sun H, Li W. Direct Synthesis of α- and β-2'-Deoxynucleosides with Stereodirecting Phosphine Oxide via Remote Participation. J Am Chem Soc 2024; 146:8768-8779. [PMID: 38483318 DOI: 10.1021/jacs.4c01780] [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: 03/28/2024]
Abstract
2'-Deoxynucleosides and analogues play a vital role in drug development, but their preparation remains a significant challenge. Previous studies have focused on β-2'-deoxynucleosides with the natural β-configuration. In fact, their isomeric α-2'-deoxynucleosides also exhibit diverse bioactivities and even better metabolic stability. Herein, we report that both α- and β-2'-deoxynucleosides can be prepared with high yields and stereoselectivity using a remote directing diphenylphosphinoyl (DPP) group. It is particularly efficient to prepare α-2'-deoxynucleosides with an easily accessible 3,5-di-ODPP donor. Instead of acting as a H-bond acceptor on a 2-(diphenylphosphinoyl)acetyl (DPPA) group in our previous studies for syn-facial O-glycosylation, the phosphine oxide moiety here acts as a remote participating group to enable highly antifacial N-glycosylation. This proposed remote participation mechanism is supported by our first characterization of an important 1,5-briged P-heterobicyclic intermediate via variable-temperature NMR spectroscopy. Interestingly, antiproliferative assays led to a α-2'-deoxynucleoside with IC50 values in the low micromole range against central nervous system tumor cell lines SH-SY5Y and LN229, whereas its β-anomer exhibited no inhibition at 100 μM. Furthermore, the DPP group significantly enhanced the antitumor activities by 10 times.
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Affiliation(s)
- Xintong Tang
- 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
| | - Yingjie Wang
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yetong Lin
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Shuheng Pan
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Qianwei Che
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Jinpeng Sang
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Ziming Gao
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Weiting Zhang
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Yuanyuan Wang
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Guolong Li
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Longwei Gao
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Zhimei Wang
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Xudong Yang
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Ao Liu
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Suyu Wang
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Biao Yu
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Peng Xu
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Zhe Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Zhaolun Zhang
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Peng Yang
- 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
| | - Haopeng Sun
- 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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4
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Sakander N, Ahmed A, Zargar IA, Mukherjee D. Base-Mediated Transformation of Glycals to Their Corresponding Vinyl Iodides and Their Application in the Synthesis of C-3 Enofuranose and Bicyclic 3,4-Pyran-Fused Furanose. J Org Chem 2023. [PMID: 37315232 DOI: 10.1021/acs.joc.3c00302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
A simple method for the iodination of unsaturated sugars to form sugar vinyl iodides was developed under oxidant-free conditions using NaH/DMF/iodine as a reagent system at ambient temperature. 2-Iodoglycals bearing ester, ether, silicon, and acetonide protection were synthesized in good to excellent yield. 3-Vinyl iodides derived from 1,2:5,6-diacetonide glucofuranose were transformed to C-3 enofuranose and bicyclic 3,4-pyran-fused furanose via Pd-catalyzed C-3 carbonylation and intramolecular Heck reaction, respectively, as the key step.
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Affiliation(s)
- Norein Sakander
- Natural Products and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ajaz Ahmed
- Natural Products and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Irshad Ahmad Zargar
- Natural Products and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Debaraj Mukherjee
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Department of Chemical Sciences, Bose Institute Kolkata, EN 80, Sector V, Bidhan Nagar, Kolkata 700091, West Bengal, India
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5
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Total Synthesis of the Methyl Glycoside of Bradyrhizose via Intramolecular Pinacol Coupling. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Chemical synthesis of polysaccharides. Curr Opin Chem Biol 2022; 69:102154. [DOI: 10.1016/j.cbpa.2022.102154] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/21/2022] [Accepted: 03/24/2022] [Indexed: 12/22/2022]
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7
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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]
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8
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Liu X, Lin Y, Liu A, Sun Q, Sun H, Xu P, Li G, Song Y, Xie W, Sun H, Yu B, Li W. 2‐Diphenylphosphinonyl
‐acetyl as a Remote Directing Group for the Highly Stereoselective Synthesis of
β‐Glycosides. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100865] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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
| | - Ao Liu
- Department of Medicinal Chemistry School of Pharmacy China Pharmaceutical University, 639 Longmian Avenue Nanjing Jiangsu 211198 China
| | - Qianhui Sun
- Department of Medicinal Chemistry School of Pharmacy China Pharmaceutical University, 639 Longmian Avenue Nanjing Jiangsu 211198 China
| | - Huiyong Sun
- Department of Medicinal Chemistry School of Pharmacy China Pharmaceutical University, 639 Longmian Avenue Nanjing Jiangsu 211198 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
| | - Guolong Li
- Department of Medicinal Chemistry School of Pharmacy China Pharmaceutical University, 639 Longmian Avenue Nanjing Jiangsu 211198 China
| | - Yingying Song
- 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
| | - Haopeng Sun
- Department of Medicinal Chemistry School of Pharmacy China Pharmaceutical University, 639 Longmian Avenue Nanjing Jiangsu 211198 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
| | - Wei Li
- Department of Medicinal Chemistry School of Pharmacy China Pharmaceutical University, 639 Longmian Avenue Nanjing Jiangsu 211198 China
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9
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Di Lorenzo F, Duda KA, Lanzetta R, Silipo A, De Castro C, Molinaro A. A Journey from Structure to Function of Bacterial Lipopolysaccharides. Chem Rev 2021; 122:15767-15821. [PMID: 34286971 DOI: 10.1021/acs.chemrev.0c01321] [Citation(s) in RCA: 89] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Lipopolysaccharide (LPS) is a crucial constituent of the outer membrane of most Gram-negative bacteria, playing a fundamental role in the protection of bacteria from environmental stress factors, in drug resistance, in pathogenesis, and in symbiosis. During the last decades, LPS has been thoroughly dissected, and massive information on this fascinating biomolecule is now available. In this Review, we will give the reader a third millennium update of the current knowledge of LPS with key information on the inherent peculiar carbohydrate chemistry due to often puzzling sugar residues that are uniquely found on it. Then, we will drive the reader through the complex and multifarious immunological outcomes that any given LPS can raise, which is strictly dependent on its chemical structure. Further, we will argue about issues that still remain unresolved and that would represent the immediate future of LPS research. It is critical to address these points to complete our notions on LPS chemistry, functions, and roles, in turn leading to innovative ways to manipulate the processes involving such a still controversial and intriguing biomolecule.
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Affiliation(s)
- Flaviana Di Lorenzo
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy.,Task Force on Microbiome Studies, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy
| | - Katarzyna A Duda
- Research Center Borstel Leibniz Lung Center, Parkallee 4a, 23845 Borstel, Germany
| | - Rosa Lanzetta
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy
| | - Alba Silipo
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy.,Task Force on Microbiome Studies, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy
| | - Cristina De Castro
- Task Force on Microbiome Studies, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy.,Department of Agricultural Sciences, University of Naples Federico II, Via Università 96, 80055 Portici, Naples, Italy
| | - Antonio Molinaro
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy.,Task Force on Microbiome Studies, University of Naples Federico II, Via Cinthia 4, 80126 Naples, Italy.,Department of Chemistry, School of Science, Osaka University, 1-1 Osaka University Machikaneyama, Toyonaka, Osaka 560-0043, Japan
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10
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Li W, Yu B. Temporary ether protecting groups at the anomeric center in complex carbohydrate synthesis. Adv Carbohydr Chem Biochem 2020; 77:1-69. [PMID: 33004110 DOI: 10.1016/bs.accb.2019.10.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The synthesis of a carbohydrate building block usually starts with introduction of a temporary protecting group at the anomeric center and ends with its selective cleavage for further transformation. Thus, the choice of the anomeric temporary protecting group must be carefully considered because it should retain intact during the whole synthetic manipulation, and it should be chemoselectively removable without affecting other functional groups at a late stage in the synthesis. Etherate groups are the most widely used temporary protecting groups at the anomeric center, generally including allyl ethers, MP (p-methoxyphenyl) ethers, benzyl ethers, PMB (p-methoxybenzyl) eithers, and silyl ethers. This chapter provides a comprehensive review on their formation, cleavage, and applications in the synthesis of complex carbohydrates.
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Affiliation(s)
- Wei Li
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, China.
| | - Biao Yu
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China.
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11
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Li R, Yu H, Chen X. Recent progress in chemical synthesis of bacterial surface glycans. Curr Opin Chem Biol 2020; 58:121-136. [PMID: 32920523 DOI: 10.1016/j.cbpa.2020.08.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 08/05/2020] [Accepted: 08/06/2020] [Indexed: 12/13/2022]
Abstract
With the continuing advancement of carbohydrate chemical synthesis, bacterial glycomes have become increasingly attractive and accessible synthetic targets. Although bacteria also produce carbohydrate-containing secondary metabolites, our review here will cover recent chemical synthetic efforts on bacterial surface glycans. The obtained compounds are excellent candidates for the development of improved structurally defined glycoconjugate vaccines to combat bacterial infections. They are also important probes for investigating glycan-protein interactions. Glycosylation strategies applied for the formation of some challenging glycosidic bonds of various uncommon sugars in a number of recently synthesized bacterial surface glycans are highlighted.
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Affiliation(s)
- Riyao Li
- Department of Chemistry, University of California Davis, Davis, CA, USA
| | - Hai Yu
- Department of Chemistry, University of California Davis, Davis, CA, USA
| | - Xi Chen
- Department of Chemistry, University of California Davis, Davis, CA, USA.
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12
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Abstract
We describe the synthesis of the unusual bicyclic sugar bradyrhizose in 14 steps and a 6% overall yield from d-glucose. The synthesis involves the elaboration of a trans-fused carbocyclic ring onto the preexisting glucopyranose framework followed by adjustment of the oxidation levels. Key steps include radical extension of the glucopyranose side chain, ring closing metathesis, allylic oxidation, Luche reduction, hydroxy-directed epoxidation, and acid-catalyzed epoxide opening at the more substituted position.
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Affiliation(s)
- Philemon Ngoje
- Department of Pharmaceutical and Biomedical Sciences , University of Georgia , 250 West Green Street , Athens , Georgia 30602 , United States.,Department of Chemistry , Wayne State University , 5101 Cass Avenue , Detroit , Michigan 48202 , United States
| | - David Crich
- Department of Pharmaceutical and Biomedical Sciences , University of Georgia , 250 West Green Street , Athens , Georgia 30602 , United States.,Department of Chemistry , Wayne State University , 5101 Cass Avenue , Detroit , Michigan 48202 , United States.,Department of Chemistry , University of Georgia , 140 Cedar Street , Athens , Georgia 30602 , United States.,Complex Carbohydrate Research Center , University of Georgia , 315 Riverbend Road , Athens , Georgia 30602 , United States
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13
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Hu Z, Silipo A, Li W, Molinaro A, Yu B. Synthesis of Forsythenethoside A, a Neuroprotective Macrocyclic Phenylethanoid Glycoside, and NMR Analysis of Conformers. J Org Chem 2019; 84:13733-13743. [DOI: 10.1021/acs.joc.9b01956] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhifei Hu
- School of Physical Science and Technology, ShanghaiTech University, 393 Huaxia Middle Road, Shanghai 201210, China
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Alba Silipo
- Department of Chemical Sciences, University of Naples “Federico II”, Via Cintia 4, 80126 Napoli, Italy
| | - Wei Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- Department of Medicinal Chemistry, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu 211198, China
| | - Antonio Molinaro
- Department of Chemical Sciences, University of Naples “Federico II”, Via Cintia 4, 80126 Napoli, Italy
| | - Biao Yu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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14
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Simard RD, Joyal M, Gillard L, Di Censo G, Maharsy W, Beauregard J, Colarusso P, Patel KD, Prévost M, Nemer M, Guindon Y. Synthesis of Sialyl Lewis X Glycomimetics Bearing a Bicyclic 3- O,4- C-Fused Galactopyranoside Scaffold. J Org Chem 2019; 84:7372-7387. [PMID: 31088084 DOI: 10.1021/acs.joc.9b01075] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Reported herein is the synthesis of sialyl LewisX analogues bearing a trans-bicyclo[4.4.0] dioxadecane-modified 3- O,4- C-fused galactopyranoside scaffold that locks the carboxylate pharmacophore in either the axial or equatorial position. This novel series of bicyclic galactopyranosides are prepared through a stereocontrolled intramolecular cyclization reaction that has been evaluated both experimentally and by density functional theory calculations. The cyclization precursors are obtained from β-d-galactose pentaacetate in a nine-step sequence featuring a highly diastereoselective equatorial alkynylation and Cu(I) catalyzed formation of the acetylenic α-ketoester moiety. Preliminary biological evaluations indicate improved activity as P-selectin antagonists for the axially configured analogues as compared to their equatorial counterparts.
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Affiliation(s)
- Ryan D Simard
- Bio-Organic Chemistry Laboratory , Institut de Recherches Cliniques de Montréal , Montréal , Québec H2W 1R7 , Canada.,Department of Chemistry , Université de Montréal , Montréal , Québec H3C 3J7 , Canada
| | - Mathieu Joyal
- Department of Biochemistry, Microbiology and Immunology , University of Ottawa , Ottawa , Ontario K1N 6N5 , Canada
| | - Laura Gillard
- Bio-Organic Chemistry Laboratory , Institut de Recherches Cliniques de Montréal , Montréal , Québec H2W 1R7 , Canada
| | - Gianna Di Censo
- Bio-Organic Chemistry Laboratory , Institut de Recherches Cliniques de Montréal , Montréal , Québec H2W 1R7 , Canada
| | - Wael Maharsy
- Department of Biochemistry, Microbiology and Immunology , University of Ottawa , Ottawa , Ontario K1N 6N5 , Canada
| | - Janie Beauregard
- Department of Biochemistry, Microbiology and Immunology , University of Ottawa , Ottawa , Ontario K1N 6N5 , Canada
| | - Pina Colarusso
- Live Cell Imaging Laboratory, Snyder Institute for Chronic Diseases , University of Calgary , Calgary , Alberta T2N 4N1 , Canada
| | - Kamala D Patel
- Live Cell Imaging Laboratory, Snyder Institute for Chronic Diseases , University of Calgary , Calgary , Alberta T2N 4N1 , Canada
| | - Michel Prévost
- Bio-Organic Chemistry Laboratory , Institut de Recherches Cliniques de Montréal , Montréal , Québec H2W 1R7 , Canada
| | - Mona Nemer
- Department of Biochemistry, Microbiology and Immunology , University of Ottawa , Ottawa , Ontario K1N 6N5 , Canada
| | - Yvan Guindon
- Bio-Organic Chemistry Laboratory , Institut de Recherches Cliniques de Montréal , Montréal , Québec H2W 1R7 , Canada.,Department of Chemistry , Université de Montréal , Montréal , Québec H3C 3J7 , Canada.,Department of Biochemistry, Microbiology and Immunology , University of Ottawa , Ottawa , Ontario K1N 6N5 , Canada
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15
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Borowski D, Maichle-Mössmer C, Ziegler T. Synthetic Adventures with 2- C
-Branched Carbohydrates: 4- C
-Formyl Branched Octoses with Structural Analogy to Bradyrhizose. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900204] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Daniel Borowski
- Institute of Organic Chemistry; University of Tuebingen; Auf der Morgenstelle 18 72076 Tuebingen Germany
| | - Cäcilia Maichle-Mössmer
- Institute of Inorganic Chemistry; University of Tuebingen; Auf der Morgenstelle 18 72076 Tuebingen Germany
| | - Thomas Ziegler
- Institute of Organic Chemistry; University of Tuebingen; Auf der Morgenstelle 18 72076 Tuebingen Germany
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16
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Aboussafy CL, Andersen Gersby LB, Molinaro A, Newman MA, Lowary TL. A Convergent Route to Enantiomers of the Bicyclic Monosaccharide Bradyrhizose Leads to Insight into the Bioactivity of an Immunologically Silent Lipopolysaccharide. J Org Chem 2018; 84:14-41. [DOI: 10.1021/acs.joc.8b02206] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Claude Larrivée Aboussafy
- Alberta Glycomics Centre and Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | | | - Antonio Molinaro
- Department of Chemical Sciences, University of Naples “Federico II” Via Cintia 4, 80126 Napoli, Italy
| | - Mari-Anne Newman
- Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg, Denmark
| | - Todd L. Lowary
- Alberta Glycomics Centre and Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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17
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Dhakal B, Crich D. Synthesis and Stereocontrolled Equatorially Selective Glycosylation Reactions of a Pseudaminic Acid Donor: Importance of the Side-Chain Conformation and Regioselective Reduction of Azide Protecting Groups. J Am Chem Soc 2018; 140:15008-15015. [PMID: 30351022 DOI: 10.1021/jacs.8b09654] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Pseudaminic acid is an amino deoxy sialic acid whose glycosides are essential components of many pathogenic Gram-negative bacterial cell walls including those from Pseudomonas aeruginosa, Vibrio cholerae, Campylobacter jejuni, Campylobacter coli, Vibrio vulnificus, and Pseudoalteromonas distincta. The study of pseudaminic acid glycosides is however hampered by poor availability from nature and the paucity of good synthetic methods and limited to no understanding of the factors controlling stereoselectivity. Conformational analysis of the side chains of various stereoisomeric sialic acids suggested that the side chain of pseudaminic acid would take up the most electron-withdrawing trans, gauche-conformation, as opposed to the gauche, gauche conformation of N-acetyl neuraminic acid and the gauche, trans-conformtion of 7- epi N-acetyl neuraminic acid, leading to the prediction of high equatorial selectivity. This prediction is borne out by the synthesis of a suitably protected pseudaminic acid donor from N-acetyl neuraminic acid in 20 steps and 5% overall yield and by the exquisite equatorial selectivity it displays in coupling reactions with typical glycosyl acceptors. The selectivity of the glycosylation reactions is further buttressed by the development and implementation of conditions for the regioselective release of the two amines from the corresponding azides, such as required for the preparation of the lipopolysaccharides. These findings open the way to the synthesis and study of pseudaminic acid-based bacterial lipopolysaccharides and, importantly in the broader context of glycosylation reactions in general, underline the significant role played by side-chain conformation in the control of reactivity and selectivity.
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Affiliation(s)
- Bibek Dhakal
- Department of Chemistry , Wayne State University , 5101 Cass Avenue , Detroit , Michigan 48202 , United States
| | - David Crich
- Department of Chemistry , Wayne State University , 5101 Cass Avenue , Detroit , Michigan 48202 , United States
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18
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Stereoselective synthesis of 1,2-annulated-C-Aryl glycosides from carbohydrate-derived terminally unsubstituted dienes and arynes: Application towards synthesis of sugar-fused- or branched- naphthalenes, and C-Aryl glycosides. Carbohydr Res 2018; 465:29-34. [DOI: 10.1016/j.carres.2018.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 06/04/2018] [Accepted: 06/04/2018] [Indexed: 02/03/2023]
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19
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Marchetti R, Bedini E, Gully D, Lanzetta R, Giraud E, Molinaro A, Silipo A. Rhodopseudomonas palustris Strain CGA009 Produces an O-Antigen Built up by a C-4-Branched Monosaccharide: Structural and Conformational Studies. Org Lett 2018; 20:3656-3660. [PMID: 29874087 DOI: 10.1021/acs.orglett.8b01439] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Here, the analysis of the peculiar homopolymeric O-chain, isolated from the lipopolysaccharide (LPS) of Rhodopseudomonas palustris strain CGA009, is reported. The O-chain is built up of a novel 4-C-branched sugar (12-deoxy-4- C-(d- altro-5,7,8,9-tetrahydroxyhexyl))-3- O-methyl-d-galactopyranose)) whose structure, absolute configuration, and conformational features were deduced by 2D NMR spectroscopy, optical rotation measurements, and molecular dynamics simulations.
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Affiliation(s)
- Roberta Marchetti
- Dipartimento di Scienze Chimiche , Complesso Universitario Monte Sant'Angelo, Università di Napoli Federico II , Via Cintia 4 , I-80126 Napoli , Italy
| | - Emiliano Bedini
- Dipartimento di Scienze Chimiche , Complesso Universitario Monte Sant'Angelo, Università di Napoli Federico II , Via Cintia 4 , I-80126 Napoli , Italy
| | - Djamel Gully
- IRD, Laboratoire des Symbioses Tropicales et Méditerranéennes (LSTM) , UMR IRD/SupAgro/INRA/UM2/CIRAD, TA-A82/J - Campus de Baillarguet , Montpellier 34398 Cedex 5 , France
| | - Rosa Lanzetta
- Dipartimento di Scienze Chimiche , Complesso Universitario Monte Sant'Angelo, Università di Napoli Federico II , Via Cintia 4 , I-80126 Napoli , Italy
| | - Eric Giraud
- IRD, Laboratoire des Symbioses Tropicales et Méditerranéennes (LSTM) , UMR IRD/SupAgro/INRA/UM2/CIRAD, TA-A82/J - Campus de Baillarguet , Montpellier 34398 Cedex 5 , France
| | - Antonio Molinaro
- Dipartimento di Scienze Chimiche , Complesso Universitario Monte Sant'Angelo, Università di Napoli Federico II , Via Cintia 4 , I-80126 Napoli , Italy
| | - Alba Silipo
- Dipartimento di Scienze Chimiche , Complesso Universitario Monte Sant'Angelo, Università di Napoli Federico II , Via Cintia 4 , I-80126 Napoli , Italy
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20
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Wang HY, Simmons CJ, Blaszczyk SA, Balzer PG, Luo R, Duan X, Tang W. Isoquinoline-1-Carboxylate as a Traceless Leaving Group for Chelation-Assisted Glycosylation under Mild and Neutral Reaction Conditions. Angew Chem Int Ed Engl 2017; 56:15698-15702. [DOI: 10.1002/anie.201708920] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/15/2017] [Indexed: 01/19/2023]
Affiliation(s)
- Hao-Yuan Wang
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Christopher J. Simmons
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53706 USA
| | - Stephanie A. Blaszczyk
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53706 USA
| | - Paul G. Balzer
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Renshi Luo
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Xiyan Duan
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Weiping Tang
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53706 USA
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21
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Wang HY, Simmons CJ, Blaszczyk SA, Balzer PG, Luo R, Duan X, Tang W. Isoquinoline-1-Carboxylate as a Traceless Leaving Group for Chelation-Assisted Glycosylation under Mild and Neutral Reaction Conditions. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708920] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hao-Yuan Wang
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Christopher J. Simmons
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53706 USA
| | - Stephanie A. Blaszczyk
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53706 USA
| | - Paul G. Balzer
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Renshi Luo
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Xiyan Duan
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
| | - Weiping Tang
- Pharmaceutical Sciences Division; School of Pharmacy; University of Wisconsin-Madison; 777 Highland Avenue Madison WI 53705 USA
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53706 USA
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22
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Di Lorenzo F, Palmigiano A, Duda KA, Pallach M, Busset N, Sturiale L, Giraud E, Garozzo D, Molinaro A, Silipo A. Structure of the Lipopolysaccharide from the Bradyrhizobium sp. ORS285 rfaL Mutant Strain. ChemistryOpen 2017; 6:541-553. [PMID: 28794950 PMCID: PMC5542761 DOI: 10.1002/open.201700074] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Indexed: 12/13/2022] Open
Abstract
The importance of the outer membrane and of its main constituent, lipopolysaccharide, in the symbiosis between rhizobia and leguminous host plants has been well studied. Here, the first complete structural characterization of the entire lipopolysaccharide from an O‐chain‐deficient Bradyrhizobium ORS285 rfaL mutant is achieved by a combination of chemical analysis, NMR spectroscopy, MALDI MS and MS/MS. The lipid A structure is shown to be consistent with previously reported Bradyrhizobium lipid A, that is, a heterogeneous blend of penta‐ to hepta‐acylated species carrying a nonstoichiometric hopanoid unit and possessing very‐long‐chain fatty acids ranging from 26:0(25‐OH) to 32:0(31‐OH). The structure of the core oligosaccharide region, fully characterized for the first time here, is revealed to be a nonphosphorylated linear chain with methylated sugar residues, with a heptose residue exclusively present in the outer core region, and with the presence of two singly substituted 3‐deoxy‐d‐manno‐oct‐2‐ulosonic acid (Kdo) residues, one of which is located in the outer core region. The lipid A moiety is linked to the core moiety through an uncommon 4‐substituted Kdo unit.
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Affiliation(s)
- Flaviana Di Lorenzo
- Department of Chemical Sciences University of Naples Federico II Via Cinthia 4 80126 Naples Italy
| | - Angelo Palmigiano
- CNR-Istituto per i Polimeri Compositi e Biomateriali IPCB-Unità di CataniaVia Gaifami 18 95126 Catania Italy
| | - Katarzyna A Duda
- Junior Group of Allergobiochemistry, Research Center Borstel, Leibniz Center for Medicine and Biosciences, Airway Research Center North (ARCN) German Center for Lung Research 23845 Borstel Germany
| | - Mateusz Pallach
- Department of Chemical Sciences University of Naples Federico II Via Cinthia 4 80126 Naples Italy
| | - Nicolas Busset
- IRD, Laboratoire des Symbioses Tropicales et Méditerranéennes UMR IRD/SupAgro/INRA/UM2/CIRAD, Campus International de Baillarguet, TA A-82/J34398 Montpellier Cedex 5 France
| | - Luisa Sturiale
- CNR-Istituto per i Polimeri Compositi e Biomateriali IPCB-Unità di CataniaVia Gaifami 18 95126 Catania Italy
| | - Eric Giraud
- IRD, Laboratoire des Symbioses Tropicales et Méditerranéennes UMR IRD/SupAgro/INRA/UM2/CIRAD, Campus International de Baillarguet, TA A-82/J34398 Montpellier Cedex 5 France
| | - Domenico Garozzo
- CNR-Istituto per i Polimeri Compositi e Biomateriali IPCB-Unità di CataniaVia Gaifami 18 95126 Catania Italy
| | - Antonio Molinaro
- Department of Chemical Sciences University of Naples Federico II Via Cinthia 4 80126 Naples Italy
| | - Alba Silipo
- Department of Chemical Sciences University of Naples Federico II Via Cinthia 4 80126 Naples Italy
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