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Nair D, Tiwari A, Laha B, Namboothiri INN. Diastereoselective synthesis of highly substituted cyclohexanones and tetrahydrochromene-4-ones via conjugate addition of curcumins to arylidenemalonates. Beilstein J Org Chem 2024; 20:2016-2023. [PMID: 39161707 PMCID: PMC11331540 DOI: 10.3762/bjoc.20.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Accepted: 07/29/2024] [Indexed: 08/21/2024] Open
Abstract
A cascade inter-intramolecular double Michael strategy for the synthesis of highly functionalized cyclohexanones from curcumins and arylidenemalonates is reported. This strategy works in the presence of aqueous KOH using TBAB as a suitable phase transfer catalyst at room temperature. The functionalized cyclohexanones are formed as major products in moderate to excellent yields with complete diastereoselectivity in most cases. A triple Michael adduct, tetrahydrochromen-4-one, is also formed as a side product in a few cases with excellent diastereoselectivity.
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Affiliation(s)
- Deepa Nair
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400 076, India
| | - Abhishek Tiwari
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400 076, India
| | - Banamali Laha
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400 076, India
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2
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Laha B, Tiwari AR, Gravel E, Doris E, Namboothiri INN. The Michael donor-acceptor reactivity of curcumins in the synthesis of diverse multi-functional scaffolds. Org Biomol Chem 2024; 22:1346-1359. [PMID: 38268394 DOI: 10.1039/d3ob01734f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Curcumin is a key constituent of turmeric with a variety of biological activities. From a chemical point of view, curcumin contains different functional groups that can undergo multiple transformations such as Michael addition, cycloaddition, click reaction, polymerisation, etc. Among these, Michael-type reactions under benign conditions constitute a captivating domain of curcumin's reactivity. To the best of our knowledge, no review focusing on the Michael donor-acceptor reactivity of curcumins has been published to date. Herein, we have compiled the chemistry of curcumins with respect to their chemical synthesis, biosynthesis, and involvement in chemical transformations, especially in Michael additions with advances in mechanistic aspects and understanding.
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Affiliation(s)
- Banamali Laha
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India.
| | - Abhishek R Tiwari
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India.
| | - Edmond Gravel
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France.
| | - Eric Doris
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France.
| | - Irishi N N Namboothiri
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India.
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France.
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Laha B, Suresh A, Namboothiri INN. Regio- and stereoselective synthesis of functionalized tetrahydro-benzochromenes and hexahydrochromenochromenones via [4 + 2] annulation of curcumins with nitrochromenes. Org Biomol Chem 2023; 21:1872-1877. [PMID: 36779639 DOI: 10.1039/d2ob02211g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
A base-mediated regio- and stereoselective synthesis of functionalized tetrahydro-6H-benzo[c]chromenes and hexahydro-1H,6H-chromeno[6,5-c]chromenone is disclosed here. It involves a [4 + 2] annulation via cascade double and triple Michael reactions between curcumins and nitrochromenes in the presence of Cs2CO3 and DBU, respectively, at room temperature, and it offers a diverse array of products as single regio- and diastereomers in excellent yields under mild conditions. Preliminary studies towards developing an enantioselective version under organocatalytic conditions met with only limited success but revealed a potentially interesting kinetic resolution pathway.
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Affiliation(s)
- Banamali Laha
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India.
| | - Alati Suresh
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India.
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High Yield Synthesis of Curcumin and Symmetric Curcuminoids: A "Click" and "Unclick" Chemistry Approach. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010289. [PMID: 36615495 PMCID: PMC9822029 DOI: 10.3390/molecules28010289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 12/23/2022] [Accepted: 12/27/2022] [Indexed: 01/03/2023]
Abstract
The worldwide known and employed spice of Asian origin, turmeric, receives significant attention due to its numerous purported medicinal properties. Herein, we report an optimized synthesis of curcumin and symmetric curcuminoids of aromatic (bisdemethoxycurcumin) and heterocyclic type, with yields going from good to excellent using the cyclic difluoro-boronate derivative of acetylacetone prepared by reaction of 2,4-pentanedione with boron trifluoride in THF (ca. 95%). The subsequent cleavage of the BF2 group is of significant importance for achieving a high overall yield in this two-step procedure. Such cleavage occurs by treatment with hydrated alumina (Al2O3) or silica (SiO2) oxides, thus allowing the target heptanoids obtained in high yields as an amorphous powder to be filtered off directly from the reaction media. Furthermore, crystallization instead of chromatographic procedures provides a straightforward purification step. The ease and efficiency with which the present methodology can be applied to synthesizing the title compounds earns the terms "click" and "unclick" applied to describe particularly straightforward, efficient reactions. Furthermore, the methodology offers a simple, versatile, fast, and economical synthetic alternative for the obtention of curcumin (85% yield), bis-demethoxycurcumin (78% yield), and the symmetrical heterocyclic curcuminoids (80-92% yield), in pure form and excellent yields.
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Pati S, Almeida RG, da Silva Júnior EN, Namboothiri INN. Synthesis of β-triazolylenones via metal-free desulfonylative alkylation of N-tosyl-1,2,3-triazoles. Beilstein J Org Chem 2021; 17:762-770. [PMID: 33828620 PMCID: PMC8022205 DOI: 10.3762/bjoc.17.66] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 03/19/2021] [Indexed: 12/12/2022] Open
Abstract
Desulfonylative alkylation of N-tosyl-1,2,3-triazoles under metal-free conditions leading to β-triazolylenones is reported here. The present study encompasses the synthesis of triazoles with a new substitution pattern in a single step from cyclic 1,3-dicarbonyl compounds and N-tosyl triazole in moderate to high yields. Our synthesis takes place with complete regioselectivity as confirmed by crystallographic analysis which is rationalized by a suitable mechanistic proposal. This method provides an efficient, versatile and straightforward strategy towards the synthesis of new functionalized 1,2,3-triazoles.
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Affiliation(s)
- Soumyaranjan Pati
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400 076, India
| | - Renata G Almeida
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Eufrânio N da Silva Júnior
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, CEP 31270-901, Belo Horizonte, MG, Brazil
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Pandya N, Khan E, Jain N, Satham L, Singh R, Makde RD, Mishra A, Kumar A. Curcumin analogs exhibit anti-cancer activity by selectively targeting G-quadruplex forming c-myc promoter sequence. Biochimie 2020; 180:205-221. [PMID: 33188859 DOI: 10.1016/j.biochi.2020.11.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 10/10/2020] [Accepted: 11/03/2020] [Indexed: 12/30/2022]
Abstract
Curcumin exhibits a broad spectrum of beneficial health properties that include anti-tumor and anti-cancer activities. The down-regulation of c-myc transcription via stabilizing the G-quadruplex structure formed at the promoter region of the human c-myc gene allows the repression in cancer growth. Small molecules can bind and stabilize this structure to provide an exciting and promising strategy for anti-cancer therapeutics. Herein, we investigated the interaction of Curcumin and its synthetic analogs with G-quadruplex DNA formed at the c-myc promoter by using various biophysical and biochemical assays. Further, its cytotoxic effect and mechanistic insights were explored in various cancer cell lines as well as in multicellular tumor spheroid (MCTS) model. The MCTS possesses almost similar microenvironment as avascular tumors, and micro-metastases can be used as a suitable model for the small molecule-based therapeutics development. Our study provides an expanded overview of the anti-cancer effect of a new Curcumin analog via targeting G-quadruplex structures formed at the promoter region of the human c-myc gene.
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Affiliation(s)
- Nirali Pandya
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Indore, 453552, India
| | - Eshan Khan
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Indore, 453552, India
| | - Neha Jain
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Indore, 453552, India
| | - Lakshminarayana Satham
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, Maharashtra, India
| | - Rahul Singh
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Ravindra D Makde
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Amit Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Rajasthan, 342011, India
| | - Amit Kumar
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Indore, 453552, India.
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Bera K, Ayyagari N, Satam N, Namboothiri INN. Stereoselective synthesis of hydrazinodihydrofurans via cascade Michael addition-substitution involving the reaction of curcumin and other β-dicarbonyls with α-hydrazinonitroalkenes. Org Biomol Chem 2019; 18:140-153. [PMID: 31803896 DOI: 10.1039/c9ob01974j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Highly diastereoselective synthesis of 2-hydrazinated 2,3-dihydrofurans in good to excellent yields involving an interrupted Feist-Bénary type reaction by treating a wide variety of 1,3-dicarbonyl compounds, including curcumins, with α-hydrazinated nitroalkenes is reported here. The first ever enantioselective reaction of α-hydrazinonitroalkenes has also been carried out with two selected 1,3-dicarbonyls, dimedone and cyclohexanone by employing an l-t-leucine derived squaramide as the chiral organocatalyst to afford the enantio-enriched 2-hydrazinodihydrofurans as single diastereomers in good yields and with good enantioselectivities.
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Affiliation(s)
- Kalisankar Bera
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
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Bhuvaneswari K, Sivaguru P, Lalitha A. Synthesis, Biological Evaluation and Molecular Docking of Novel Curcumin Derivatives as Bcl-2 Inhibitors Targeting Human Breast Cancer MCF-7 Cells. ChemistrySelect 2017. [DOI: 10.1002/slct.201702406] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Paramasivam Sivaguru
- Department of Chemistry; Northeast Normal University; Changchun, jilin 130024 China
| | - Appaswami Lalitha
- Department of chemistry; Periyar University; Salem- 636107, Tamil Nadu India
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Wang J, Li J, Shen X, Dong C, Lin J, Wei K. Asymmetric total synthesis of (−)-δ-lycorane. Org Chem Front 2017. [DOI: 10.1039/c7qo00021a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A first asymmetric synthesis of (−)-δ-lycorane by using a chiral bifunctional squaramide-catalysed cascade reaction is reported.
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Affiliation(s)
- Junliang Wang
- School of Chemical Science and Technology
- Yunnan University
- P. R. China
- School of Chemical Science and Technology
- Yunnan University
| | - Jianneng Li
- School of Chemical Science and Technology
- Yunnan University
- P. R. China
| | - Xianwang Shen
- School of Chemical Science and Technology
- Yunnan University
- P. R. China
| | - Cong Dong
- School of Chemical Science and Technology
- Yunnan University
- P. R. China
| | - Jun Lin
- School of Chemical Science and Technology
- Yunnan University
- P. R. China
- School of Chemical Science and Technology
- Yunnan University
| | - Kun Wei
- School of Chemical Science and Technology
- Yunnan University
- P. R. China
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Sun QS, Zhu H, Lin H, Tan Y, Yang XD, Sun XW, Sun X. Dual-organocatalytic Michael/Michael/aldol cascade reaction for the asymmetric construction of fully-substituted cyclohexane. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.11.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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11
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Effect of curcumin analogs onα-synuclein aggregation and cytotoxicity. Sci Rep 2016; 6:28511. [PMID: 27338805 PMCID: PMC4919791 DOI: 10.1038/srep28511] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 06/06/2016] [Indexed: 01/17/2023] Open
Abstract
Alpha-synuclein (α-Syn) aggregation into oligomers and fibrils is associated with dopaminergic neuron loss occurring in Parkinson’s disease (PD) pathogenesis. Compounds that modulate α-Syn aggregation and interact with preformed fibrils/oligomers and convert them to less toxic species could have promising applications in the drug development efforts against PD. Curcumin is one of the Asian food ingredient which showed promising role as therapeutic agent against many neurological disorders including PD. However, the instability and low solubility makes it less attractive for the drug development. In this work, we selected various curcumin analogs and studied their toxicity, stability and efficacy to interact with different α-Syn species and modulation of their toxicity. We found a subset of curcumin analogs with higher stability and showed that curcumin and its various analogs interact with preformed fibrils and oligomers and accelerate α-Syn aggregation to produce morphologically different amyloid fibrils in vitro. Furthermore, these curcumin analogs showed differential binding with the preformed α-Syn aggregates. The present data suggest the potential role of curcumin analogs in modulating α-Syn aggregation.
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Vamisetti GB, Chowdhury R, Kumar M, Ghosh SK. “On Water” Organocatalyzed [4 + 2] Cycloaddition of Enones and Nitro Dienes for the Enantioselective Synthesis of Densely Substituted Cyclohexanones. Org Lett 2016; 18:1964-7. [DOI: 10.1021/acs.orglett.6b00460] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Ganga B. Vamisetti
- Bio-Organic
Division, Bhabha Atomic Research Centre, Trombay, Mumbai 40008, India
| | - Raghunath Chowdhury
- Bio-Organic
Division, Bhabha Atomic Research Centre, Trombay, Mumbai 40008, India
| | - Mukesh Kumar
- Solid
State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Sunil K. Ghosh
- Bio-Organic
Division, Bhabha Atomic Research Centre, Trombay, Mumbai 40008, India
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Nayak S, Panda P, Bhakta S, Mishra SK, Mohapatra S. Current advances of organocatalytic Michael–Michael cascade reaction in the synthesis of highly functionalized cyclic molecules. RSC Adv 2016. [DOI: 10.1039/c6ra21191g] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Organocatalytic domino/cascade reactions provide a convenient method for the construction of highly functionalized cyclic molecular structures bearing multiple stereocenters in a highly stereoselective fashion.
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Affiliation(s)
- Sabita Nayak
- Department of Chemistry
- Ravenshaw University
- Cuttack-753 003
- India
| | - Pravati Panda
- Department of Chemistry
- Ravenshaw University
- Cuttack-753 003
- India
| | - Sujitlal Bhakta
- Department of Chemistry
- Ravenshaw University
- Cuttack-753 003
- India
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Ghorai MK, Halder S, Das S. Domino Michael–Michael and Aldol–Aldol Reactions: Diastereoselective Synthesis of Functionalized Cyclohexanone Derivatives Containing Quaternary Carbon Center. J Org Chem 2015; 80:9700-12. [PMID: 26334184 DOI: 10.1021/acs.joc.5b01768] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manas K. Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur, 208016, India
| | - Sandipan Halder
- Department of Chemistry, Indian Institute of Technology, Kanpur, 208016, India
| | - Subhomoy Das
- Department of Chemistry, Indian Institute of Technology, Kanpur, 208016, India
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Silaichev PS, Filimonov VO, Slepukhin PA, Rubin M, Maslivets AN. Diastereoselective Synthesis of Indolindiones by Formal [5+1] Double Michael Cycloaddition to 4-Cinnamoylpyrrolediones. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500141] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Halimehjani AZ, Namboothiri INN, Hooshmand SE. Nitroalkenes in the synthesis of carbocyclic compounds. RSC Adv 2014. [DOI: 10.1039/c4ra04069d] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Ayyagari N, Mehta A, Gopi E, Deb I, Mobin SM, Namboothiri IN. Conjugate addition of curcumins to chalcones and azodicarboxylates. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.04.083] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Luo NH, Sun X, Wei WT, Zhang XJ, Yan M. Asymmetric synthesis of multicyclic spiro-1,3-indandiones via a cascade Michael/Michael reaction of curcumins and 2-arylidene-1,3-indandiones. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2013.02.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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