1
|
Romano N, McMinn TL, Gagné MR. N-Si Heterolysis by Chiral (BOX)Cu(OTf) 2 Catalysts for the Synthesis of Indole and Carbazole Glycosides. Org Lett 2024; 26:4975-4979. [PMID: 38829188 DOI: 10.1021/acs.orglett.4c01584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Chiral Cu(II) bisoxazolines have been shown to catalyze the coupling of acetyl-protected carbohydrates with N-silylated indoles to give the corresponding N-glycosides. Preliminary mechanistic experiments indicated that catalysis occurs through formation of a Cu-indolide complex with concomitant formation of TMS-OTf which together activate the sugar and deliver the indole nucleophile.
Collapse
Affiliation(s)
- Neyen Romano
- Caudill Laboratories, Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Tanner L McMinn
- Caudill Laboratories, Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Michel R Gagné
- Caudill Laboratories, Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| |
Collapse
|
2
|
Liu DP, Zhang XS, Liu S, Hu XG. Dehydroxylative radical N-glycosylation of heterocycles with 1-hydroxycarbohydrates enabled by copper metallaphotoredox catalysis. Nat Commun 2024; 15:3401. [PMID: 38649350 PMCID: PMC11035684 DOI: 10.1038/s41467-024-47711-9] [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: 02/04/2024] [Accepted: 04/09/2024] [Indexed: 04/25/2024] Open
Abstract
N-Glycosylated heterocycles play important roles in biological systems and drug development. The synthesis of these compounds heavily relies on ionic N-glycosylation, which is usually constrained by factors such as labile glycosyl donors, precious metal catalysts, and stringent conditions. Herein, we report a dehydroxylative radical method for synthesizing N-glycosides by leveraging copper metallaphotoredox catalysis, in which stable and readily available 1-hydroxy carbohydrates are activated for direct N-glycosylation. Our method employs inexpensive photo- and copper- catalysts and can tolerate some extent of water. The reaction exhibits a broad substrate scope, encompassing 76 examples, and demonstrates high stereoselectivity, favoring 1,2-trans selectivity for furanoses and α-selectivity for pyranoses. It also exhibits high site-selectivity for substrates containing multiple N-atoms. The synthetic utility is showcased through the late-stage functionalization of bioactive compounds and pharmaceuticals like Olaparib, Axitinib, and Metaxalone. Mechanistic studies prove the presence of glycosyl radicals and the importance of copper metallaphotoredox catalysis.
Collapse
Affiliation(s)
- Da-Peng Liu
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
| | - Xiao-Sen Zhang
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
| | - Shuai Liu
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
| | - Xiang-Guo Hu
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China.
| |
Collapse
|
3
|
Wang R, Xu H, Banerjee A, Cui Z, Ma Y, Whittingham WG, Yang P, Li A. Mild Approach to Nucleoside Analogues via Photoredox/Cu-Catalyzed Decarboxylative C-N Bond Formation. Total Synthesis of Oxetanocin A. Org Lett 2024; 26:2691-2696. [PMID: 38011311 DOI: 10.1021/acs.orglett.3c00914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
The conventional N-glycosylation methods for nucleoside synthesis usually require strongly acidic or basic conditions. Here we report the decarboxylative C(sp3)-N coupling of glycosyl N-hydroxyphthalimide esters with nucleobases via dual photoredox/Cu catalysis, which offered a mild approach to nucleoside analogues. A total synthesis of oxetanocin A, an antiviral natural product containing an oxetanose moiety, has been achieved by using this method.
Collapse
Affiliation(s)
- Ruonan Wang
- College of Chemistry and Henan Institute of Advanced Technology, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, China
- 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
| | - Hao Xu
- 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
| | - Arpan Banerjee
- 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
| | - Zhongwen Cui
- College of Chemistry and Henan Institute of Advanced Technology, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, China
- 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
| | - Yuyong Ma
- 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
| | - William G Whittingham
- Jealott's Hill International Research Centre, Syngenta Limited, Bracknell, Berkshire RG42 6EY, United Kingdom
| | - Peng Yang
- College of Chemistry and Henan Institute of Advanced Technology, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, China
| | - Ang Li
- 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
|
4
|
Khanam A, Dubey S, Mandal PK. Mild method for the synthesis of α-glycosyl chlorides: A convenient protocol for quick one-pot glycosylation. Carbohydr Res 2023; 534:108976. [PMID: 37871478 DOI: 10.1016/j.carres.2023.108976] [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: 09/16/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 10/25/2023]
Abstract
A simple and efficient protocol for the preparation of α-glycosyl chlorides within 15-30 min is described which employs a stable, cheap, and commercially available Trichloroisocyanuric acid (TCCA) as non-toxic chlorinating agent along with PPh3. This process involved a wide range of substrate scope and is well-suited with labile hydroxyl protecting groups such as benzyl, acetyl, benzoyl, isopropylidene, benzylidene, and TBDPS (tert-butyldiphenylsilyl) groups. This process is operationally simple, mild conditions and obtained good yields with excellent α selectivity. Moreover, a multi-catalyst one-pot glycosylation can be carried out to transform the glycosyl hemiacetals directly to a various O-glycosides in high overall yields without the need for separation or purification of the α-glycosyl chloride donors.
Collapse
Affiliation(s)
- Ariza Khanam
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226 031, India
| | - Shashiprabha Dubey
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226 031, India
| | - Pintu Kumar Mandal
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226 031, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
| |
Collapse
|
5
|
Yang J, Xie D, Ma X. Recent Advances in Chemical Synthesis of Amino Sugars. Molecules 2023; 28:4724. [PMID: 37375279 DOI: 10.3390/molecules28124724] [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: 04/17/2023] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
Amino sugars are a kind of carbohydrates with one or more hydroxyl groups replaced by an amino group. They play crucial roles in a broad range of biological activities. Over the past few decades, there have been continuing efforts on the stereoselective glycosylation of amino sugars. However, the introduction of glycoside bearing basic nitrogen is challenging using conventional Lewis acid-promoted pathways owing to competitive coordination of the amine to the Lewis acid promoter. Additionally, diastereomeric mixtures of O-glycoside are often produced if aminoglycoside lack a C2 substituent. This review focuses on the updated overview of the way to stereoselective synthesis of 1,2-cis-aminoglycoside. The scope, mechanism, and the applications in the synthesis of complex glycoconjugates for the representative methodologies were also included.
Collapse
Affiliation(s)
- Jian Yang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Demeng Xie
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Xiaofeng Ma
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
6
|
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
|
7
|
Lucie G, Marian P, Florence P, Maïwenn J. 1,4-d-Sorbitan: A Promising Biobased-Platform for the Synthesis of Chiral Amines. J Org Chem 2023; 88:2642-2647. [PMID: 36715414 DOI: 10.1021/acs.joc.2c02827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The regio- and diastereoselective synthesis of chiral amines derived from 1,4-d-sorbitan has been developed via the borrowing hydrogen reaction using a cooperative catalysis between an achiral iridium catalyst and diphenylphosphoric acid. The different reactivities of the four hydroxyl groups on the 1,4-d-sorbitan scaffold have also been highlighted.
Collapse
Affiliation(s)
- Grand Lucie
- Univ Lyon, INSA Lyon, Université Lyon 1, CNRS, CPE Lyon, UMR 5246, ICBMS, 1 rue Victor Grignard, Villeurbanne 69621 Cedex, France
| | - Powderly Marian
- Univ Lyon, INSA Lyon, Université Lyon 1, CNRS, CPE Lyon, UMR 5246, ICBMS, 1 rue Victor Grignard, Villeurbanne 69621 Cedex, France
| | - Popowycz Florence
- Univ Lyon, INSA Lyon, Université Lyon 1, CNRS, CPE Lyon, UMR 5246, ICBMS, 1 rue Victor Grignard, Villeurbanne 69621 Cedex, France
| | - Jacolot Maïwenn
- Univ Lyon, INSA Lyon, Université Lyon 1, CNRS, CPE Lyon, UMR 5246, ICBMS, 1 rue Victor Grignard, Villeurbanne 69621 Cedex, France
| |
Collapse
|
8
|
Chakraborty S, Mishra B, Kumar Das P, Pasari S, Hotha S. Synthesis of N-Glycosides by Silver-Assisted Gold Catalysis. Angew Chem Int Ed Engl 2023; 62:e202214167. [PMID: 36458817 DOI: 10.1002/anie.202214167] [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: 09/30/2022] [Revised: 11/04/2022] [Accepted: 11/30/2022] [Indexed: 12/05/2022]
Abstract
The synthesis of N-glycosides from stable glycosyl donors in a catalytic fashion is still challenging, though they exist ubiquitously in DNA, RNA, glycoproteins, and other biological molecules. Herein, silver-assisted gold-catalyzed activation of alkynyl glycosyl carbonate donors is shown to be a versatile approach for the synthesis of purine and pyrimidine nucleosides, asparagine glycosides and quinolin-2-one N-glycosides. Thus synthesized nucleosides were subjected to the oxidation-reduction sequence for the conversion of Ribf- into Araf- nucleosides, giving access to nucleosides that are otherwise difficult to synthesize. Furthermore, the protocol is demonstrated to be suitable for the synthesis of 2'-modified nucleosides in a facile manner. Direct attachment of an asparagine-containing dipeptide to the glucopyranose and subsequent extrapolation to afford the dipeptide disaccharide unit of chloroviruses is yet another facet of this endeavor.
Collapse
Affiliation(s)
- Saptashwa Chakraborty
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune-, 411 008, MH, India
| | - Bijoyananda Mishra
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune-, 411 008, MH, India
| | - Pratim Kumar Das
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune-, 411 008, MH, India
| | - Sandip Pasari
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune-, 411 008, MH, India
| | - Srinivas Hotha
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune-, 411 008, MH, India
| |
Collapse
|
9
|
Stereoselective synthesis of glycosyl azides from anomeric hydroxides via protecting group manipulations. Carbohydr Res 2023; 523:108739. [PMID: 36640705 DOI: 10.1016/j.carres.2023.108739] [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: 09/15/2022] [Revised: 12/21/2022] [Accepted: 01/03/2023] [Indexed: 01/11/2023]
Abstract
Herein, we report the direct conversion of anomeric hydroxides to glycosyl azides in one step using diphenylphosphoryl azide. Protecting group manipulations on the hexose sugars have enabled the stereoselective synthesis of either the α-glycosyl azides or the β-anomeric azides in moderate to very good yields. The reaction has also been successfully used to enable the synthesis of β-2-deoxy-2-aminoglucosyl azides.
Collapse
|
10
|
Oliveira PHR, Tordato ÉA, Vélez JAC, Carneiro PS, Paixão MW. Visible-Light Mediated Carbamoylation of Nitrones under a Continuous Flow Regime. J Org Chem 2022; 88:6407-6419. [PMID: 36576774 DOI: 10.1021/acs.joc.2c02266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Herein, we report a rapid and scalable continuous-flow photocatalytic approach for the carbamoylation of nitrones. This protocol makes use of readily available 4-amido-1,4 dihydropyridines as carbamoyl radical precursors. The scope of this transformation exhibits high compatibility with complex structures containing amino acids, peptides, and glycosides. Importantly, the developed method allows a photocatalytic synthetic strategy in combination with flow conditions, maximizing the potential and efficiency for the synthesis of valuable α-(N-hydroxy)amino amides.
Collapse
Affiliation(s)
- Pedro H R Oliveira
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos - UFSCar, São Carlos, São Paulo 13565-905, Brazil
| | - Éverton A Tordato
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos - UFSCar, São Carlos, São Paulo 13565-905, Brazil
| | - Jeimy A C Vélez
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos - UFSCar, São Carlos, São Paulo 13565-905, Brazil
| | - Pablo S Carneiro
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos - UFSCar, São Carlos, São Paulo 13565-905, Brazil
| | - Márcio W Paixão
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos - UFSCar, São Carlos, São Paulo 13565-905, Brazil
| |
Collapse
|
11
|
Pratesi D, Mirabella S, Petrucci G, Matassini C, Faggi C, Cardona F, Goti A. Stereospecific Access to α‐ and β‐N‐Glycosylamine Derivatives by a Metal Free O‐to‐N [3,3]‐Sigmatropic Rearrangement. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Debora Pratesi
- Università degli Studi di Firenze: Universita degli Studi di Firenze Department of Chemistry "Ugo Schiff" via della Lastruccia 3-13 50019 Sesto Fiorentino ITALY
| | - Stefania Mirabella
- Universita degli Studi di Firenze Department of Chemistry "Ugo Schiff" via della Lastruccia 3-13 Sesto Fiorentino ITALY
| | - Giulia Petrucci
- Universita degli Studi di Firenze Department of Chemistry "Ugo Schiff" via della Lastruccia 3-13 Sesto Fiorentino ITALY
| | - Camilla Matassini
- Universita degli Studi di Firenze Department of Chemistry "Ugo Schiff" via della Lastruccia 3-13 Sesto Fiorentino ITALY
| | - Cristina Faggi
- Università degli Studi di Firenze: Universita degli Studi di Firenze Department of Chemistry "Ugo Schiff" via della Lastruccia 3-13 Sesto Fiorentino ITALY
| | - Francesca Cardona
- Università degli Studi di Firenze: Universita degli Studi di Firenze Department of Chemistry "Ugo Schiff" via della Lastruccia 3-13 50019 Sesto Fiorentino ITALY
| | - Andrea Goti
- Universita' di Firenze Chemistry ""Ugo Schiff"" via della Lastruccia 13 I-50019 Sesto Fiorentino FI ITALY
| |
Collapse
|
12
|
Choutka J, Kratochvíl M, Císařová I, Pohl R, Kaminský J, Parkan K. Silicon-bridged (1→1)-disaccharides: an umpoled glycomimetic scaffold. Org Biomol Chem 2022; 20:7613-7621. [PMID: 35861668 DOI: 10.1039/d2ob01161a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Modification of the carbohydrate scaffold is an important theme in drug and vaccine discovery. Therefore, the preparation of novel types of glycomimetics is of interest in synthetic carbohydrate chemistry. In this manuscript, we present an early investigation of the synthesis, structure, and conformational behaviour of (1→1)-Si-disaccharides as a novel type of glycomimetics arising from the replacement of interglycosidic oxygen with a dimethyl-, methylpropyl-, or diisopropylsilyl linkage. We accomplished the preparation of this unusual group of umpoled compounds by the reaction of lithiated glycal or 2-oxyglycal units with dialkyldichlorosilanes. We demonstrated the good stability of the "Si-glycosidic" linkage under acidic conditions even at elevated temperatures. Next, we described the conformational landscape of these compounds by the combination of in silico modelling with spectroscopic and crystallographic methods. Finally, we explained the observed conformational flexibility of these compounds by the absence of gauche stabilizing effects that are typically at play in natural carbohydrates.
Collapse
Affiliation(s)
- Jan Choutka
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic.
| | - Michal Kratochvíl
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic.
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40, Prague, Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 166 10, Prague, Czech Republic
| | - Jakub Kaminský
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 166 10, Prague, Czech Republic
| | - Kamil Parkan
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic.
| |
Collapse
|
13
|
Sarkar K, Pathak T. Synthesis of 1,4‐Disubstituted 1,2,3‐Triazoles from Terminal Vinyl Sulfones in Ionic Liquid: A Metal‐Free Eliminative Azide‐Olefinic Cycloaddition Route to Triazolyl Carbohydrates and Triazole‐linked Bissaccharides. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kumares Sarkar
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721 302 India
| | - Tanmaya Pathak
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721 302 India
| |
Collapse
|
14
|
Kumar M, Kumar N, Gurawa A, Kashyap S. Stereoselective Synthesis of
α
‐ʟ‐Rhamnopyranosides from ʟ‐Rhamnal Employing Ruthenium‐Catalysis. ChemistrySelect 2022. [DOI: 10.1002/slct.202200963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Manoj Kumar
- Carbohydrate Chemistry Research Laboratory (CCRL) Department of Chemistry Malaviya National Institute of Technology Jaipur (MNIT Jaipur) J. L. N. Marg Jaipur 302 017 INDIA
| | - Nitin Kumar
- Carbohydrate Chemistry Research Laboratory (CCRL) Department of Chemistry Malaviya National Institute of Technology Jaipur (MNIT Jaipur) J. L. N. Marg Jaipur 302 017 INDIA
| | - Aakanksha Gurawa
- Carbohydrate Chemistry Research Laboratory (CCRL) Department of Chemistry Malaviya National Institute of Technology Jaipur (MNIT Jaipur) J. L. N. Marg Jaipur 302 017 INDIA
| | - Sudhir Kashyap
- Carbohydrate Chemistry Research Laboratory (CCRL) Department of Chemistry Malaviya National Institute of Technology Jaipur (MNIT Jaipur) J. L. N. Marg Jaipur 302 017 INDIA
| |
Collapse
|
15
|
Efficient Synthesis of Azido Sugars Using Fluorosulfuryl Azide Diazotransfer Reagent. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
16
|
Kumar H, Dubey A, Prajapati G, Kant R, Ampapathi RS, Mandal PK. Regioselective direct sulfenylation of glycals using arylsulfonyl chlorides in the presence of triphenylphosphine: access to C2-thioaryl glycosides. NEW J CHEM 2022. [DOI: 10.1039/d1nj05228d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cheap and easily available arylsulfonyl chlorides as a sulfur source reductively couple with glycals in the presence of triphenylphosphine to afford C2-thioaryl glycosides.
Collapse
Affiliation(s)
- Harikesh Kumar
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Atul Dubey
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Gurudayal Prajapati
- NMR Centre, SAIF, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Ruchir Kant
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Ravi S. Ampapathi
- NMR Centre, SAIF, CSIR-Central Drug Research Institute, Lucknow 226031, India
- Academy of Scientific and Innovative Research, Ghaziabad-201002, India
| | - Pintu Kumar Mandal
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
- Academy of Scientific and Innovative Research, Ghaziabad-201002, India
| |
Collapse
|
17
|
Jaeschke SO, Lindhorst TK. Versatile Synthesis of Diaminoxylosides via Iodosulfonamidation of Xylal Derivatives. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Sven Ole Jaeschke
- Otto Diels Institute of Organic Chemistry Christiana Albertina University of Kiel Otto-Hahn-Platz 3–4 24118 Kiel Germany
| | - Thisbe K. Lindhorst
- Otto Diels Institute of Organic Chemistry Christiana Albertina University of Kiel Otto-Hahn-Platz 3–4 24118 Kiel Germany
| |
Collapse
|
18
|
Santana AG, Herrera AJ, González CC. Intramolecular Metal-Free C(sp 3)-H Activation Enables a Selective Mono O-Debenzylation of Fully Protected Aminosugars. J Org Chem 2021; 86:16736-16752. [PMID: 34807601 DOI: 10.1021/acs.joc.1c01977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Carbamate-bearing benzylated aminosugars undergo an I2/I(III)-promoted intramolecular hydrogen atom transfer (IHAT) followed by a nucleophilic attack to provide polycyclic structures. Thus, suitably positioned benzyl ethers are surgically oxidized into the corresponding mixed N/O-benzylidene acetals, which can be conveniently deprotected under mild acidic conditions to grant access to selectively O-deprotected aminosugars amenable for further derivatization. The scope of this strategy has been proven with a series of furanosic and pyranosic scaffolds. Preliminary mechanistic studies, including Hammett LFER and KIE analyses, support a reaction pathway with nucleophilic cyclization as the rate-determining step.
Collapse
Affiliation(s)
- Andrés G Santana
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Antonio J Herrera
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Concepción C González
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| |
Collapse
|
19
|
Mała P, Pedersen CM. Self‐Promoted Glycosylation for the Synthesis of β‐
N
‐Glycosyl Sulfonyl Amides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100808] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Patrycja Mała
- Faculty of Chemistry Adam Mickiewicz University Uniwersytetu Poznańskiego 8 61-614 Poznań Poland
| | | |
Collapse
|
20
|
Bi J, Tan Q, Wu H, Liu Q, Zhang G. Rhodium-Catalyzed Denitrogenative Transannulation of N-Sulfonyl-1,2,3-triazoles with Glycals Giving Pyrroline-Fused N-Glycosides. Org Lett 2021; 23:6357-6361. [PMID: 34346222 DOI: 10.1021/acs.orglett.1c02141] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Described here is a selective synthesis of 2,3-dihydropyrrole-fused N-glycosides through rhodium-catalyzed denitrogenative transannulation of N-sulfonyl-1,2,3-triazoles with glycals. A series of pyrroline-fused N-glycosides are afforded in moderate to excellent yields with exclusive regioselectivity and stereoselectivity. Functional application of such a resultant product by oxidative addition and epoxidation is also explored. Notably, the treatment of a pyrroline-fused N-glycoside (3a) with TMSOTf efficiently leads to an interesting unexpected C-nucleoside (9) via a TMSOTf-inducing ring opening/acetyl migration/ring closing reaction sequence.
Collapse
Affiliation(s)
- Jingjing Bi
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Qiang Tan
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Hao Wu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Qingfeng Liu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Guisheng Zhang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| |
Collapse
|
21
|
Hazelard D, Compain P. Nucleophilic Ring‐Opening of 1,6‐Anhydrosugars: Recent Advances and Applications in Organic Synthesis. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100403] [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)
- Damien Hazelard
- Laboratoire d'Innovation Moléculaire et Applications (LIMA) Univ. de Strasbourg Univ. de Haute-Alsace CNRS (UMR 7042) Equipe de Synthèse Organique et Molécules Bioactives (SYBIO) ECPM 25 Rue Becquerel 67000 Strasbourg France
| | - Philippe Compain
- Laboratoire d'Innovation Moléculaire et Applications (LIMA) Univ. de Strasbourg Univ. de Haute-Alsace CNRS (UMR 7042) Equipe de Synthèse Organique et Molécules Bioactives (SYBIO) ECPM 25 Rue Becquerel 67000 Strasbourg France
| |
Collapse
|
22
|
Khanam A, Mandal PK. Direct N-glycosylation of tosyl and nosyl carbamates with trichloroacetimidate donors. NEW J CHEM 2021. [DOI: 10.1039/d1nj02051j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Acidic sulphonamide reactants act as both catalysts and nucleophiles to afford the desired N-glycofuranosyl sulfonamides stereoselectively.
Collapse
Affiliation(s)
- Ariza Khanam
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram extn, Sitapur Road, P.O. Box 173, Lucknow 226031, India
| | - Pintu Kumar Mandal
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram extn, Sitapur Road, P.O. Box 173, Lucknow 226031, India
- Academy of Scientific and Innovative Research, Ghaziabad-201002, India
| |
Collapse
|