1
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Mishra VK, Khanna A, Tiwari G, Tyagi R, Sagar R. Recent developments on the synthesis of biologically active glycohybrids. Bioorg Chem 2024; 145:107172. [PMID: 38340475 DOI: 10.1016/j.bioorg.2024.107172] [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: 11/29/2023] [Revised: 01/11/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024]
Abstract
The exploration of hybridization emerges as a potent tool in advancing drug discovery research, with a significant emphasis on carbohydrate-containing hybrid scaffolds. Evidence indicates that linking carbohydrate molecules to privileged bioactive scaffolds enhances the bioactivity of drug molecules. This synergy results in a diverse range of activities, making carbohydrate scaffolds pivotal for synthesizing compound libraries with significant functional and structural diversity. Beyond their synthesis utility, these scaffolds offer applications in screening bioactive molecules, presenting alternative avenues for drug development. This comprehensive review spanning 2015 to 2023 focuses on synthesized glycohybrid molecules, revealing their bioactivity in areas such as anti-microbial, anti-cancer, anti-diabetic, anti-inflammatory activities, enzyme inhibition and pesticides. Numerous novel glycohybrids surpass positive control drugs in biological activity. This focused study not only highlights the diverse bioactivities of glycohybrids but also underscores their promising role in innovative drug development strategies.
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Affiliation(s)
- Vinay Kumar Mishra
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005
| | - Ashish Khanna
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005
| | - Ghanshyam Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005
| | - Rajdeep Tyagi
- Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University, 110067 New Delhi
| | - Ram Sagar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005; Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University, 110067 New Delhi.
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2
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Li Y, Briand M, Miqueu K, Anselmi E, Magnier E, Dagousset G. Electrophilic Fluorination of Silyl Dienol Ethers: a General and Selective Access to γ-Fluoro Enals. Chemistry 2024; 30:e202303545. [PMID: 38055212 DOI: 10.1002/chem.202303545] [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: 10/26/2023] [Revised: 12/04/2023] [Accepted: 12/06/2023] [Indexed: 12/07/2023]
Abstract
We describe the direct synthesis of γ-fluoro enals from the corresponding silyl dienol ethers. This simple process operates under mild conditions and is compatible with a wide range of functionalities. The high γ regioselectivity of this protocol was rationalized by means of theoretical calculations.
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Affiliation(s)
- Yang Li
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 45 avenue des Etats-Unis, 78000, Versailles, France
| | - Marina Briand
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 45 avenue des Etats-Unis, 78000, Versailles, France
| | - Karinne Miqueu
- CNRS/Université de Pau et des Pays de l'Adour, E2S-UPPA, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM UMR 5254), Hélioparc, 2 Avenue du Président Angot, 64053, Pau Cedex 09, France
| | - Elsa Anselmi
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 45 avenue des Etats-Unis, 78000, Versailles, France
- Université de Tours, Faculté des Sciences et Techniques, 37200, Tours, France
| | - Emmanuel Magnier
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 45 avenue des Etats-Unis, 78000, Versailles, France
| | - Guillaume Dagousset
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 45 avenue des Etats-Unis, 78000, Versailles, France
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3
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Zhao CG, Du C, Guo Z, Li W, Han J, Xie J. Merging Manganese and Iminium Catalysis: Selective Hydroalkenylation of Unsaturated Aldehydes and Ketones. Angew Chem Int Ed Engl 2023; 62:e202312414. [PMID: 37696774 DOI: 10.1002/anie.202312414] [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: 08/23/2023] [Revised: 09/07/2023] [Accepted: 09/11/2023] [Indexed: 09/13/2023]
Abstract
The use of synergistic catalytic strategy can usually circumvent the intrinsic limitations of one catalytic system. In this communication, we disclose a cooperative catalysis strategy of manganese and iminium catalysis to realize selective hydroalkenylation of unsaturated aldehydes and ketones. Its success stems from the LUMO activation of unsaturated carbonyl compounds with secondary amines as the organocatalyst and the synergistic HOMO activation of alkenylboronic acids with Mn2 (CO)8 Br2 . This protocol exhibits several synthetic advances, e.g., simple operation, good functional group compatibility and good regioselectivity. The theoretical calculation indicates the migratory insertion followed by demetallation-isomerization process is kinetically more favorable than Michael-like nucleophilic addition. The use of proline-derived organocatalyst can deliver the desired products in moderate enantioselectivity.
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Affiliation(s)
- Chuan-Gang Zhao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Chaoyu Du
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zhenyu Guo
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Weipeng Li
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Jie Han
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Jin Xie
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
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4
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Singh K, Behera SS, Tyagi R, Tiwari G, Sagar R. Metal free synthesis of 2,3-dideoxy-α, β-unsaturated carbohydrate enals (Perlin aldehydes). Carbohydr Res 2023; 531:108890. [PMID: 37406515 DOI: 10.1016/j.carres.2023.108890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/16/2023] [Accepted: 06/27/2023] [Indexed: 07/07/2023]
Abstract
A metal free synthesis of enantiopure 2,3-dideoxy-α, β-unsaturated carbohydrate enals (Perlin aldehydes), in CH3CN-0.02 N H2SO4 in water (1:1, v/v) with 0.5 equivalent additives (4-hydroxy-6-methyl-2-pyrone or 4-amino coumarin), has been reported. This efficient protocol works well for the acetylated glycals (glucal, galactal and arabinal) and afforded Perlin aldehydes and hemiacetals in acceptable to good yields. Whereas, benzylated glycals furnished respective Perlin aldehydes, hemiacetals and the 2-deoxy derivatives, under similar reaction conditions. The products yields were significantly reduced when the additives were removed from the reaction mixture, indicating that they constitute an essential component of this approach. Further the use of 0.02 N H2SO4 in water: acetonitrile (1:1, v/v) solvent system is essential for the formation of Perlin aldehydes. The similar reactions under neutral reaction conditions (CH3CN:H2O, 1:1, v/v) with additives, afforded the hemiacetals as major product. This methodology is a metal free approach to Perlin aldehyde synthesis and therefore having additional benefit of its use in preparation of bioactive drug molecules, where metal toxicity is the major concern.
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Affiliation(s)
- Kavita Singh
- Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Sourav Sagar Behera
- Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Rajdeep Tyagi
- Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Ghanshyam Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, 221005, India
| | - Ram Sagar
- Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India; Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, 221005, India.
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5
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Manzano VE, Dada L, Uhrig ML, Varela O. Synthesis of sugar enones and their use as powerful synthetic precursors of thiodisaccharides. Carbohydr Res 2023; 529:108833. [PMID: 37216699 DOI: 10.1016/j.carres.2023.108833] [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: 02/23/2023] [Revised: 05/04/2023] [Accepted: 05/08/2023] [Indexed: 05/24/2023]
Abstract
Monosaccharide derivatives having a double bond conjugated to a carbonyl (sugar enones or enuloses) are relevant synthetic tools. They are also suitable starting materials, or versatile intermediates, for the synthesis of a wide variety of natural or synthetic compounds with a broad spectrum of biological and pharmacological activities. The preparation of enones is mainly focused on the search for more efficient and diastereoselective synthetic methodologies. The usefulness of enuloses relies on the diverse reaction possibilities offered by alkene and carbonyl double bonds, which are prone to undergo varied reactions such as halogenation, nitration, epoxidation, reduction, addition, etc. The addition of thiol groups that led to sulfur glycomimetics, such as thiooligosaccharides, is particularly relevant. Therefore, the synthesis of enuloses and the Michael addition of sulfur nucleophiles to give thiosugars or thiodisaccharides are discussed here. Chemical modifications of the conjugate addition products to afford biologically active compounds are also reported.
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Affiliation(s)
- Verónica E Manzano
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Intendente Güiraldes 2160, C1428EHA, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina
| | - Lucas Dada
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Intendente Güiraldes 2160, C1428EHA, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina
| | - María Laura Uhrig
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Intendente Güiraldes 2160, C1428EHA, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina.
| | - Oscar Varela
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Intendente Güiraldes 2160, C1428EHA, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina.
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6
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Zhang Z, Jia J, Hu F, Xia Y. Aldehyde Olefination with Arylboroxines Enabled by Binary Rhodium Catalysis. Org Lett 2023; 25:3228-3233. [PMID: 37104730 DOI: 10.1021/acs.orglett.3c00916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
A rhodium-catalyzed olefination of aliphatic aldehydes with arylboroxines is described. The simple rhodium(I) complex [Rh(cod)OH]2 without any external ligands or additives is able to catalyze the reaction in air and neutral conditions, allowing the construction of aryl olefins in an efficient manner with a good functional group tolerance. The mechanistic investigation illustrates that the binary rhodium catalysis is the key for the transformation, which involves a Rh(I)-catalyzed 1,2-addition and a Rh(III)-catalyzed elimination.
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Affiliation(s)
- Zihao Zhang
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China
- West China School of Public Health and West China Fourth Hospital, and State Key Laboratory of Biotherapy, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jie Jia
- West China School of Public Health and West China Fourth Hospital, and State Key Laboratory of Biotherapy, Sichuan University, Chengdu, Sichuan 610041, China
| | - Fangdong Hu
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China
| | - Ying Xia
- West China School of Public Health and West China Fourth Hospital, and State Key Laboratory of Biotherapy, Sichuan University, Chengdu, Sichuan 610041, China
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7
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Hussain N, Rasool F, Khan S, Saleem M, Maheshwari M. Advances in the Synthesis of Natural Products and Medicinally Relevant Molecules from Glycals. ChemistrySelect 2022. [DOI: 10.1002/slct.202201873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nazar Hussain
- Department of Medicinal Chemistry Banaras Hindu University India
| | - Faheem Rasool
- Department of Chemistry Govt. College for Women, Parade Ground Jammu 180001 India
| | - Shahnawaz Khan
- Department of Chemistry Central University of Jammu 180001 Jammu India
| | - Mohd Saleem
- Department of Chemistry Govt.Postgraduate college Rajouri India
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8
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Abdel-Galil E, Girges MM, Said GE. Synthesis, Characterization, and Biological Evaluation of Novel Cyclohexenone Derivatives Incorporating Azo, Triazene, and Tetraazene Moieties. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222100292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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One-step selective dehydrogenation of cyclic hemiacetal sugars toward to their chiral lactones. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Saha R, Mukherjee A, Bhattacharya S. Development of a ruthenium–aquo complex for utilization in synthesis and catalysis for selective hydration of nitriles and alkynes. NEW J CHEM 2022. [DOI: 10.1039/d1nj04736a] [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
A ruthenium(ii)–aquo complex serves as a precursor for the synthesis of new ternary complexes and also as an efficient catalyst for selective hydration of aryl nitriles to aryl amides and aryl alkynes to aryl aldehydes.
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Affiliation(s)
- Rumpa Saha
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata – 700 032, India
| | - Aparajita Mukherjee
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata – 700 032, India
| | - Samaresh Bhattacharya
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata – 700 032, India
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11
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Abstract
Recent advances in partial reductions of inert carboxylic acids and their derivatives to active aldehydes are reviewed.
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Affiliation(s)
- Zhanhui Yang
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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12
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Citric acid mediated simple and stereoselective synthesis of o-linked glycosides by Ferrier rearrangement. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100347] [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] Open
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13
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Wu Q, Dong Z, Xu J, Yang Z. Sulfur-controlled and rhodium-catalyzed formal (3 + 3) transannulation of thioacyl carbenes with alk-2-enals and mechanistic insights. Org Biomol Chem 2021; 19:3173-3180. [PMID: 33885571 DOI: 10.1039/d1ob00116g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rhodium-catalyzed denitrogenative formal (3 + 3) transannulation of 1,2,3-thiadiazoles with alk-2-enals is achieved, producing 2,3-dihydrothiopyran-4-ones in moderate to excellent yields. An inverse KIE of 0.49 is obtained, suggesting the reversibility of the oxidative addition of thioacyl Rh(i) carbenes to alk-2-enals. The late-stage structural modifications of steroid compounds are realized. Moreover, our studies show that thioacyl carbenes have different reactivities to those of α-oxo and α-imino carbenes, and highlight the importance of heteroatoms in deciding the reactivities of heterovinyl carbenes.
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Affiliation(s)
- Qiuyue Wu
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
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14
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Shi K, Zhu H, Ren F, Liu S, Song Y, Li W, Zou L. Copper‐catalyzed [3+2+1] Annulation of Anthranils with Phenylacetaldehydes: Synthesis of 8‐Acylquinolines. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kai Shi
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Pharmaceutical Sciences Jiangnan University Lihu Avenue 1800 Wuxi 214122 P.R. China
| | - Hao Zhu
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Pharmaceutical Sciences Jiangnan University Lihu Avenue 1800 Wuxi 214122 P.R. China
| | - Fei Ren
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Pharmaceutical Sciences Jiangnan University Lihu Avenue 1800 Wuxi 214122 P.R. China
| | - Shuang Liu
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Pharmaceutical Sciences Jiangnan University Lihu Avenue 1800 Wuxi 214122 P.R. China
| | - Yingying Song
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Pharmaceutical Sciences Jiangnan University Lihu Avenue 1800 Wuxi 214122 P.R. China
| | - Wei Li
- School of Biology and Chemistry, Key Laboratory of Chemical Synthesis and Environmental Pollution Control-Remediation Technology of Guizhou Province Xingyi Normal University for Nationalities Xingyi 562400 China
| | - Liang‐Hua Zou
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Pharmaceutical Sciences Jiangnan University Lihu Avenue 1800 Wuxi 214122 P.R. China
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15
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Dąbrowska AM, Barabaś A, Sikorski A, Wera M, Brzeski J, Domżalska M, Chylewska A. t-Butyl 3-azido- and 3-amino-2,3-dideoxy-α- d- arabino-hexopyranosides: a concise protocol of structural and chemical profiles to identify metal ion binding modes. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1871899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | - Anna Barabaś
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, Gdańsk, 80-308, Poland
| | - Artur Sikorski
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, Gdańsk, 80-308, Poland
| | - Michał Wera
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, Gdańsk, 80-308, Poland
| | - Jakub Brzeski
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, Gdańsk, 80-308, Poland
| | - Marta Domżalska
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, Gdańsk, 80-308, Poland
| | - Agnieszka Chylewska
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, Gdańsk, 80-308, Poland
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16
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Jana K, Wakchaure PD, Hussain N, Mukherjee D, Ganguly B. The mechanism of conversion of substituted glycals to chiral acenes via Diels-Alder reaction: a computational study. Org Biomol Chem 2021; 19:6353-6367. [PMID: 34231642 DOI: 10.1039/d1ob00408e] [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
Synthesis of linearly fused aromatic systems using a glycal-based diene with an aryne is a long-standing topic of interest in glycal chemistry. We have examined the mechanistic pathways for the transformation of substituted glycals to chiral fused aromatic cores via Diels-Alder (DA) reaction using the SMDACN-M06-2X/6-31G(d) level of theory. The DA reactions of E (1a) and Z (1a') forms of C-2 alkenyl glycal and an aryl glycal (1b) as a diene were examined with a benzyne intermediate generated as a dienophile. The computational results reveal that 1a and 1b can only be transformed into the fused aromatic cores by the base-catalyzed reaction because a [1,5] sigmatropic hydrogen shift is not feasible. The activation free energy barrier for the base-catalyzed proton abstraction process is 4.2 kcal mol-1 and there is almost no barrier for stereoisomeric 1a DA-complexes. The activation free energy barrier values for stereoisomeric 1b DA-complexes for the base-catalyzed proton abstraction process are 10.8 and 12.4 kcal mol-1. The appropriate orientation of glycal-ring-oxygen and hydrogen at the 5th position of Z (1a') forms of C-2 alkenyl glycal facilitates the [1,5] sigmatropic hydrogen shift; however, the base-catalyzed reaction is energetically more favored than the former case. The rate-determining step for 1a and 1a' is the ring-opening step (18.2 and 19.5 kcal mol-1 for the S-stereoisomer), whereas the DA adduct formation step is the rate-determining step for 1b (16.1 kcal mol-1 for the S-stereoisomer). The structural analysis reveals the formation of the preferred S-stereoisomer over the R-stereoisomer with the respective dienes.
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Affiliation(s)
- Kalyanashis Jana
- CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India. and Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh-201 002, India
| | - Padmaja D Wakchaure
- CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India. and Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh-201 002, India
| | - Nazar Hussain
- Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh-201 002, India and Natural Product Chemistry Division, Indian Institute of Integrative Medicine (IIIM), Jammu 180001, India
| | - Debaraj Mukherjee
- Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh-201 002, India and Natural Product Chemistry Division, Indian Institute of Integrative Medicine (IIIM), Jammu 180001, India
| | - Bishwajit Ganguly
- CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India. and Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh-201 002, India
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17
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Holmstedt S, George L, Koivuporras A, Valkonen A, Candeias NR. Deoxygenative Divergent Synthesis: En Route to Quinic Acid Chirons. Org Lett 2020; 22:8370-8375. [PMID: 33002357 DOI: 10.1021/acs.orglett.0c02995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The installation of vicinal mesylate and silyl ether groups in a quinic acid derivative generates a system prone for stereoselective borane-catalyzed hydrosilylation through a siloxonium intermediate. The diversification of the reaction conditions allowed the construction of different defunctionalized fragments foreseen as useful synthetic fragments. The selectivity of the hydrosilylation was rationalized on the basis of deuteration experiments and computational studies.
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Affiliation(s)
- Suvi Holmstedt
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33101 Tampere, Finland
| | - Lijo George
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33101 Tampere, Finland
| | - Alisa Koivuporras
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33101 Tampere, Finland
| | - Arto Valkonen
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland
| | - Nuno R Candeias
- Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33101 Tampere, Finland.,LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
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18
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Mukherjee MM, Maity SK, Ghosh R. One-pot construction of carbohydrate scaffolds mediated by metal catalysts. RSC Adv 2020; 10:32450-32475. [PMID: 35516477 PMCID: PMC9056687 DOI: 10.1039/d0ra05355d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 08/04/2020] [Indexed: 11/21/2022] Open
Abstract
Owing to the environmental concern worldwide and also due to cost, time and labour issues, use of one-pot reactions [domino/cascade/tandem/multi-component (MC) or sequential] has gained much attention among the scientific and industrial communities for the generation of compound libraries having different scaffolds. Inclusion of sugars in such compounds is expected to increase the pharmacological efficacy because of the possibility of better interactions with the receptors of such unnatural glycoconjugates. In many of the one-pot transformations, the presence of a metal salt/complex can improve the reaction/change the course of reaction with remarkable increase in chemo-/regio-/stereo-selectivity. On the other hand because of the importance of natural polymeric glycoconjugates in life processes, the development and efficient synthesis of related oligosaccharides, particularly utilising one-pot MC-glycosylation techniques are necessary. The present review is an endeavour to discuss one-pot transformations involving carbohydrates catalysed by a metal salt/complex.
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Affiliation(s)
- Mana Mohan Mukherjee
- Laboratory of Cell and Molecular Biology, NIDDK, National Institutes of Health Bethesda MD 20892 USA
| | | | - Rina Ghosh
- Department of Chemistry, Jadavpur University Kolkata 700032 India
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19
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Hussain N, Ahmed A, Mukherjee D. 2‐Halo Glycals as “Synthon” for 2‐C‐Branched Sugar: Recent Advances and Applications in Organic Synthesis. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000195] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Nazar Hussain
- Department of Natural Product ChemistryCSIR-Indian Institute of Integrative Medicines Canal Road Jammu India
| | - Ajaz Ahmed
- Department of Natural Product ChemistryCSIR-Indian Institute of Integrative Medicines Canal Road Jammu India
| | - Debaraj Mukherjee
- Department of Natural Product ChemistryCSIR-Indian Institute of Integrative Medicines Canal Road Jammu India
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20
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Zhang S, Neumann H, Beller M. Synthesis of α,β-unsaturated carbonyl compounds by carbonylation reactions. Chem Soc Rev 2020; 49:3187-3210. [DOI: 10.1039/c9cs00615j] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Carbonylation reactions represent one of the most important tool box for the synthesis of α,β-unsaturated carbonyl compounds which are key building blocks in organic chemistry. This paper summarizes the most important advances in this field.
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Affiliation(s)
- Shaoke Zhang
- Leibniz-Institut für Katalyse e.V
- 18059 Rostock
- Germany
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21
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Jang WJ, Song SB, Lee S, Yoo SY, Chung YK, Huh J, Yun J. LiOtBu-promoted stereoselective deconjugation of α,β-unsaturated diesters probed using density functional theory. Org Chem Front 2020. [DOI: 10.1039/d0qo01091j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We report the isomerisation of α,β-unsaturated diesters to thermodynamically less favourable β,γ-unsaturated carbonyl compounds in the absence of strongly basic anhydrous or photochemical conditions.
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Affiliation(s)
- Won Jun Jang
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - Seon Bin Song
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - Soyeon Lee
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - Seok Yeol Yoo
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - You Kyoung Chung
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - Joonsuk Huh
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
- School of Advanced Institute of Nanotechnology
| | - Jaesook Yun
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
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22
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Zhang D, Yin L, Zhong J, Cheng Q, Cai H, Chen Y, Zhang QF. Ring-opening reactions of donor–acceptor cyclopropanes with cyclic ketals and thiol ketals. Org Biomol Chem 2020; 18:6492-6496. [DOI: 10.1039/d0ob01530j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Cyclic (thiol) ketals were used as hetero-nucleophiles for the ring opening of donor–acceptor cyclopropanes to afford functionalized diethers.
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Affiliation(s)
- Dongxin Zhang
- Institute of Molecular Engineering and Applied Chemistry
- Anhui University of Technology
- Ma'anshan 243002
- China
| | - Lei Yin
- Institute of Molecular Engineering and Applied Chemistry
- Anhui University of Technology
- Ma'anshan 243002
- China
| | - Junchao Zhong
- Institute of Molecular Engineering and Applied Chemistry
- Anhui University of Technology
- Ma'anshan 243002
- China
| | - Qihang Cheng
- Institute of Molecular Engineering and Applied Chemistry
- Anhui University of Technology
- Ma'anshan 243002
- China
| | - Hu Cai
- Institute of Molecular Engineering and Applied Chemistry
- Anhui University of Technology
- Ma'anshan 243002
- China
| | - Yan Chen
- Institute of Molecular Engineering and Applied Chemistry
- Anhui University of Technology
- Ma'anshan 243002
- China
| | - Qian-Feng Zhang
- Institute of Molecular Engineering and Applied Chemistry
- Anhui University of Technology
- Ma'anshan 243002
- China
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23
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Yao H, Willam R, Wang S, He J, Guo T, Liu X. One‐Pot Cascade Transformation of Glucal into Structurally Diverse Drug‐Like Scaffolds. Chem Asian J 2019; 14:4024-4030. [DOI: 10.1002/asia.201900844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 07/27/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Hui Yao
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
- Key Laboratory of Natural Products Research and Development College of Biological and Pharmaceutical Sciences China Three Gorges University Yichang Hubei 443002 People's Republic of China
| | - Ronny Willam
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Siming Wang
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Jingxi He
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Tai Guo
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Xue‐Wei Liu
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
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24
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Joarder DD, Gayen S, Sarkar R, Bhattacharya R, Roy S, Maiti DK. (Ar-tpy)Ru II(ACN) 3: A Water-Soluble Catalyst for Aldehyde Amidation, Olefin Oxo-Scissoring, and Alkyne Oxygenation. J Org Chem 2019; 84:8468-8480. [PMID: 31244154 DOI: 10.1021/acs.joc.9b00487] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The synthetic chemists always look for developing new catalysts, sustainable catalysis, and their applications in various organic transformations. Herein, we report a new class of water-soluble complexes, (Ar-tpy)RuII(ACN)3, utilizing designed terpyridines possessing electron-donating and -withdrawing aromatic residues for tuning the catalytic activity of the Ru(II) complex. These complexes displayed excellent catalytic activity for several oxidative organic transformations including late-stage C-H functionalization of aldehydes with NH2OR to valuable primary amides in nonconventional aqueous media with excellent yield. Its diverse catalytic power was established for direct oxo-scissoring of a wide range of alkenes to furnish aldehydes and/or ketones in high yield using a low catalyst loading in the water. Its smart catalytic activity under mild conditions was validated for dioxygenation of alkynes to highly demanding labile synthons, 1,2-diketones, and/or acids. This general and sustainable catalysis was successfully employed on sugar-based substrates to obtain the chiral amides, aldehydes, and labile 1,2-diketones. The catalyst is recovered and reused with a moderate turnover. The proposed mechanistic pathway is supported by isolation of the intermediates and their characterization. This multifaceted sustainable catalysis is a unique tool, especially for late-stage functionalization, to furnish the targeted compounds through frequently used amidation and oxygenation processes in the academia and industry.
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Affiliation(s)
- Dripta De Joarder
- Department of Chemistry , University of Calcutta , 92 A. P. C. Road , Kolkata 700009 , India
| | - Subrata Gayen
- Department of Chemistry , University of Calcutta , 92 A. P. C. Road , Kolkata 700009 , India
| | - Rajarshi Sarkar
- School of Technology Management & Engineering , NMIMS , Indore 453112 , India
| | - Rajarshi Bhattacharya
- Department of Chemistry , University of Calcutta , 92 A. P. C. Road , Kolkata 700009 , India
| | | | - Dilip K Maiti
- Department of Chemistry , University of Calcutta , 92 A. P. C. Road , Kolkata 700009 , India
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25
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Niu B, Yang K, Lawrence B, Ge H. Transient Ligand-Enabled Transition Metal-Catalyzed C-H Functionalization. CHEMSUSCHEM 2019; 12:2955-2969. [PMID: 30958921 DOI: 10.1002/cssc.201900151] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/03/2019] [Indexed: 05/20/2023]
Abstract
Transition metal-catalyzed C-H bond functionalization is among the most efficient and powerful strategies in synthetic organic chemistry to derivatize otherwise inert sites of organic molecules for the construction of C-C and C-heteroatom bonds. However, additional steps are often required to install the directing groups to realize selective C-H bond functionalization of the substrates. These tedious steps run counter to the step-economical nature of the C-H activation. In contrast, direct functionalization of the substrate by using transient ligands avoids the unnecessary steps for the pre-functionalization of the substrates. This Minireview provides a short overview of the major progress made in this field for C-H functionalization at sp2 and sp3 carbon centers with different transient working modes, including covalent, hydrogen, and ionic bonds.
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Affiliation(s)
- Ben Niu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, Jiangsu, 213164, China
- Department of Chemistry and Chemical Biology, Indiana University Purdue University Indianapolis, Indianapolis, Indiana, 46202, USA
| | - Ke Yang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, Jiangsu, 213164, China
- Department of Chemistry and Chemical Biology, Indiana University Purdue University Indianapolis, Indianapolis, Indiana, 46202, USA
| | - Brianna Lawrence
- Department of Chemistry and Chemical Biology, Indiana University Purdue University Indianapolis, Indianapolis, Indiana, 46202, USA
| | - Haibo Ge
- Department of Chemistry and Chemical Biology, Indiana University Purdue University Indianapolis, Indianapolis, Indiana, 46202, USA
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26
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Hussain N, Bhardwaj M, Ahmed A, Mukherjee D. Synthesis of Sugar-Based Enones and Their Transformation into 3,5-Disubstituted Furans and 2-Acyl-Substituted 1,2,3-Trideoxy Sugars in the Presence of Lewis Acids. Org Lett 2019; 21:3034-3037. [PMID: 31002522 DOI: 10.1021/acs.orglett.9b00680] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Pd-catalyzed carbonylative cross-coupling reactions of 2-iodoglycals have been developed for the synthesis of sugar-based arylones and ynones using formic acid as the carbonyl source. Whereas acetyl-protected arylones lead to the formation of highly substituted furan derivatives in the presence of Lewis acid, benzyl-protected arylones furnished the 3-deoxy sugar derivative. In the presence of nucleophiles, an attack took place on the C-1 or C-3 carbon regio- and stereoselectively depending on the nature of the nucleophiles.
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Affiliation(s)
- Nazar Hussain
- Natural Product Chemistry Division , Indian Institute of Integrative Medicine (IIIM) , Jammu 180001 , India.,Academy of Scientific and Innovative Research (AcSIR-IIIM) , Jammu 180001 , India
| | - Monika Bhardwaj
- Natural Product Chemistry Division , Indian Institute of Integrative Medicine (IIIM) , Jammu 180001 , India
| | - Ajaz Ahmed
- Natural Product Chemistry Division , Indian Institute of Integrative Medicine (IIIM) , Jammu 180001 , India.,Academy of Scientific and Innovative Research (AcSIR-IIIM) , Jammu 180001 , India
| | - Debaraj Mukherjee
- Natural Product Chemistry Division , Indian Institute of Integrative Medicine (IIIM) , Jammu 180001 , India.,Academy of Scientific and Innovative Research (AcSIR-IIIM) , Jammu 180001 , India
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27
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Zhang S, Neumann H, Beller M. Pd-Catalyzed Carbonylation of Vinyl Triflates To Afford α,β-Unsaturated Aldehydes, Esters, and Amides under Mild Conditions. Org Lett 2019; 21:3528-3532. [DOI: 10.1021/acs.orglett.9b00765] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Shaoke Zhang
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Rostock 18059, Germany
| | - Helfried Neumann
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Rostock 18059, Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Rostock 18059, Germany
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28
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Siry SA, Shermolovich YG, Kinzhybalo VV, Bednarchuk TJ, Timoshenko VM. Trifluoromethylated Thiopyranoid Glycals: Synthesis and Ferrier (I) Type Reactions. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800643] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Serhii A. Siry
- Institute of Organic Chemistry; National Academy of Sciences of Ukraine; Murmanska 5 02094 Kyiv Ukraine
| | - Yurii G. Shermolovich
- Institute of Organic Chemistry; National Academy of Sciences of Ukraine; Murmanska 5 02094 Kyiv Ukraine
| | - Vasyl V. Kinzhybalo
- Institute of Low Temperature and Structure Research; Polish Academy of Sciences; Okólna 2 50-422 Wroclaw Poland
| | - Tamara J. Bednarchuk
- Institute of Low Temperature and Structure Research; Polish Academy of Sciences; Okólna 2 50-422 Wroclaw Poland
| | - Vadim M. Timoshenko
- Institute of Organic Chemistry; National Academy of Sciences of Ukraine; Murmanska 5 02094 Kyiv Ukraine
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29
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Guo W, Kuniyil R, Gómez JE, Maseras F, Kleij AW. A Domino Process toward Functionally Dense Quaternary Carbons through Pd-Catalyzed Decarboxylative C(sp3)–C(sp3) Bond Formation. J Am Chem Soc 2018; 140:3981-3987. [DOI: 10.1021/jacs.7b12608] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Wusheng Guo
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Rositha Kuniyil
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - José Enrique Gómez
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química, Universitat Autónoma de Barcelona, 08193 Bellaterra, Catalonia, Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Catalan Institute of Research and Advanced Studies (ICREA), Pg. Lluís Companys 23, 08010 Barcelona, Spain
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30
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Yang L, Wei L, Wan JP. Redox neutral [4+2] benzannulation of dienals and tertiary enaminones for benzaldehyde synthesis. Chem Commun (Camb) 2018; 54:7475-7478. [DOI: 10.1039/c8cc03514h] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The [4+2] benzannulation reactions between tertiary enaminones and dienals have been developed for the synthesis of polyfunctionalized benzaldehydes, providing a new access to benzaldehydes alongside the classical formylation strategy.
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Affiliation(s)
- Lu Yang
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Li Wei
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
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31
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Pal P, Shaw AK. The evolution of comprehensive strategies for furanoid glycal synthesis and their applications. RSC Adv 2017. [DOI: 10.1039/c6ra28598h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cyclic enol ether frameworks, especially stereochemically pure furanoid and pyranoid glycals are well known highly functionalized chiral building blocks.
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Affiliation(s)
- Pinki Pal
- Division of Medicinal & Process Chemistry
- CSIR- Central Drug Research Institut
- Lucknow-226 031
- India
| | - Arun K. Shaw
- Division of Medicinal & Process Chemistry
- CSIR- Central Drug Research Institut
- Lucknow-226 031
- India
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32
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Vannam R, Peczuh MW. A practical and scalable synthesis of carbohydrate based oxepines. Org Biomol Chem 2016; 14:3989-96. [PMID: 27056249 DOI: 10.1039/c6ob00262e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient, seven-step synthesis of carbohydrate based oxepines is reported using per-O-acetyl septanoses as key intermediates. The scope of the synthesis was evaluated by varying both the pyranose starting materials and protecting groups incorporated into the oxepine products. The practicality of the method make it amenable to scale up as demonstrated by the gram-scale synthesis of the d-glucose derived oxepine.
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Affiliation(s)
- Raghu Vannam
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, U-3060, Storrs, CT 06269, USA.
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33
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Synthesis of 1-naphthaldehydes via the cascade reactions of 1-phenylpent-4-yn-2-ols promoted by iodine monochloride. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Das P, Kundooru S, Shaw AK. ‘Chiron’ approach to stereoselective synthesis of sphinganine and unnatural safingol, an antineoplastic and antipsoriatic agent. RSC Adv 2016. [DOI: 10.1039/c5ra27342k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Highly stereoselective total syntheses of sphinganine 1 and antineoplastic and antipsoriatic drug safingol 17 have been demonstrated.
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Affiliation(s)
- Pintu Das
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Somireddy Kundooru
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Arun K. Shaw
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
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35
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Xia Y, Lin L, Chang F, Fu X, Liu X, Feng X. Asymmetric Ring-Opening of Cyclopropyl Ketones with Thiol, Alcohol, and Carboxylic Acid Nucleophiles Catalyzed by a ChiralN,N′-Dioxide-Scandium(III) Complex. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506909] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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36
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Xia Y, Lin L, Chang F, Fu X, Liu X, Feng X. Asymmetric Ring-Opening of Cyclopropyl Ketones with Thiol, Alcohol, and Carboxylic Acid Nucleophiles Catalyzed by a ChiralN,N′-Dioxide-Scandium(III) Complex. Angew Chem Int Ed Engl 2015; 54:13748-52. [DOI: 10.1002/anie.201506909] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Revised: 08/20/2015] [Indexed: 12/11/2022]
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37
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Synthesis of naturally occurring (+)-osmundalactone and 4-epi-(+)-osmundalactone from triacetyl-O-d-glucal. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.04.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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38
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Copper-catalyzed selective C_O bond formation by oxidative α-C(sp3)_H/O_H coupling between ethers and salicylaldehydes. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Kundooru S, Das P, Meena S, Kumar V, Siddiqi MI, Datta D, Shaw AK. Substrate and stereocontrolled iodocycloetherification of highly functionalized enantiomerically pure allylic alcohols: application to synthesis of cytotoxic 2-epi jaspine B and its biological evaluation. Org Biomol Chem 2015; 13:8241-50. [DOI: 10.1039/c5ob01123j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A mechanistic study on iodocycloetherification of enantiopure allylic alcohols is established. Its application to synthesis of marine cytotoxic 2-epi jaspine B has been demonstrated.
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Affiliation(s)
- Somireddy Kundooru
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow
- India
| | - Pintu Das
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow
- India
| | - Sanjeev Meena
- Biochemistry Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
| | - Vikash Kumar
- Molecular and Structural Biology Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
| | - Mohammad Imran Siddiqi
- Molecular and Structural Biology Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
| | - Dipak Datta
- Biochemistry Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
| | - Arun K. Shaw
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow
- India
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40
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Risi RM, Maza AM, Burke SD. Asymmetric Hydroformylation-Initiated Tandem Sequences for Syntheses of (+)-Patulolide C, (−)-Pyrenophorol, (+)-Decarestrictine L, and (+)-Prelog Djerassi Lactone. J Org Chem 2014; 80:204-16. [DOI: 10.1021/jo502301k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Roberto M. Risi
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Andrew M. Maza
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Steven D. Burke
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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41
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Huang XR, Liu Q, Wang J, Xiao JA, Yang H. Solvent-effects tuning the catalytic reactivity of prolinamides in asymmetric aldol reactions. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.10.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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42
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Madhubabu T, Yousuf SK, Kusunuru AK, Mukherjee D. Transformation of Glycals into α,β,γ,δ-Conjugated Chirons under Metal-Free Conditions. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403041] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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43
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Arora I, Kashyap VK, Singh AK, Dasgupta A, Kumar B, Shaw AK. Design, synthesis and biological evaluation of bicyclic iminosugar hybrids: conformational constraint as an effective tool for tailoring the selectivity of α-glucosidase inhibitors. Org Biomol Chem 2014; 12:6855-68. [DOI: 10.1039/c4ob00486h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Li B, Li C. Neighboring heteroatom effect unique to aqueous aldol reactions of water-insoluble substrates. J Org Chem 2014; 79:2242-54. [PMID: 24533785 DOI: 10.1021/jo500213b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The reactions of ketones and aldehydes in the presence of Li(+) and in the presence or absence of PTC mediated by water were performed to produce aldol products. Several advantages of the aqueous reactions over organic solvent-mediated ones have been demonstrated including higher yields, shorter reaction times, simpler purifications, and better functional group tolerance. Some reactions that do not take place in organic solvents have been realized in water. The successes are attributed to the neighboring heteroatom effect. In the aqueous aldol condensations, Li2CO3 was an efficient catalyst, and therefore base-liable groups such as epoxides, esters, and silyl groups could survive. For heteroaromatic ethanones, the aqueous aldol reactions were accomplished without PTC to give β-hydroxyketones in good yields. The water-mediated condensations of aldosyl hemiacetals with aromatic ketones led to a new carbohydrate-derived skeleton in quantitative yields. To some extent, this research has expanded the applicablities of aldol condensations and reactions.
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Affiliation(s)
- Bo Li
- Department of Chemistry, School of Science, Tianjin University , Tianjin 300072, China
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Xu X, Leszczynski JS, Mason SM, Zavalij PY, Doyle MP. Expedient access to substituted 3-amino-2-cyclopentenones by dirhodium-catalyzed [3+2]-annulation of silylated ketene imines and enoldiazoacetates. Chem Commun (Camb) 2014; 50:2462-4. [PMID: 24452444 DOI: 10.1039/c3cc48993k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In a reaction that proceeds under mild conditions with remarkable functional group tolerance, structurally diverse 3-amino-2-cyclopentenones bearing a quaternary carbon at the 4-position have been synthesized through a formal [3+2]-cycloaddition reaction of silylated ketene imines (SKIs) and enoldiazoaceates by dirhodium catalysis.
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Affiliation(s)
- Xichen Xu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20740, USA.
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