1
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Boddy A, Sahay AK, Rivers EL, White AJP, Spivey AC, Bull JA. Enantioselective Phase-Transfer-Catalyzed Synthesis of Spirocyclic Azetidine Oxindoles. Org Lett 2024; 26:2079-2084. [PMID: 38447584 PMCID: PMC10949229 DOI: 10.1021/acs.orglett.4c00358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 03/08/2024]
Abstract
Spiro-3,2'-azetidine oxindoles combine two independently important pharmacophores in an understudied spirocyclic motif that is attractive for medicinal chemistry. Here, the enantioselective synthesis of these structures is achieved in up to 2:98 er through intramolecular C-C bond formation, involving activation of the substrate with a novel SF5-containing chiral cation phase-transfer (PT) catalyst. The products are readily elaborated/deprotected to afford medicinally relevant enantioenriched compounds. Control experiments suggest an interfacial PT mechanism, whereby catalytic asymmetric induction is achieved through the activation of the chloride leaving group.
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Affiliation(s)
- Alexander
J. Boddy
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K.
| | - Aditya K. Sahay
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K.
| | - Emma L. Rivers
- Hit
Discovery, Discovery Sciences, R&D, AstraZeneca, Cambridge, U.K.
| | - Andrew J. P. White
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K.
| | - Alan C. Spivey
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K.
| | - James A. Bull
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K.
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2
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Keereewan S, Kuhakarn C, Leowanawat P, Saithong S, Reutrakul V, Soorukram D. Diastereoselective Addition of PhSCF 2SiMe 3 to Chiral N- tert-Butanesulfinyl Ketimines Derived from Isatins: Synthesis of Enantioenriched gem-Difluoromethylenated Spiro-pyrrolidinyl and Spiro-piperidinyl Oxindoles. J Org Chem 2022; 87:15963-15985. [PMID: 36366856 DOI: 10.1021/acs.joc.2c02098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A convenient and efficient synthetic strategy to prepare enantioenriched gem-difluoromethylenated spiro-pyrrolidinyl and spiro-piperidinyl oxindoles is described. Fluoride-mediated diastereoselective nucleophilic addition of PhSCF2SiMe3 to chiral N-tert-butanesulfinyl ketimines derived from isatins was a key step and provided diastereomeric adducts, which were readily separable. Removal of the chiral sulfinyl group followed by structural manipulation afforded chiral gem-difluoromethylenated spiro-pyrrolidinyl and spiro-piperidinyl oxindoles.
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Affiliation(s)
- Sirisuk Keereewan
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok10400, Thailand
| | - Chutima Kuhakarn
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok10400, Thailand
| | - Pawaret Leowanawat
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok10400, Thailand
| | - Saowanit Saithong
- Division of Physical Science and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla90110, Thailand.,Medical Science Research and Innovation Institute, Research and Development Office, Prince of Songkla University, Hat Yai, Songkhla90110, Thailand
| | - Vichai Reutrakul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok10400, Thailand
| | - Darunee Soorukram
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok10400, Thailand
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3
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Song M, Zhao J, Li EQ. Recent advances in tertiary amine Lewis base-promoted cycloadditions of allenoates. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.11.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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4
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Manenti M, Lo Presti L, Molteni G, Silvani A. Unexpected chiral vicinal tetrasubstituted diamines via borylcopper-mediated homocoupling of isatin imines. Beilstein J Org Chem 2022; 18:303-308. [PMID: 35330782 PMCID: PMC8919417 DOI: 10.3762/bjoc.18.34] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 03/04/2022] [Indexed: 01/10/2023] Open
Abstract
Addressing the asymmetric synthesis of oxindole-based α-aminoboronic acids, instead of the expected products we disclosed the efficient homocoupling of oxindole-based N-tert-butanesulfinyl imines, with the generation of chiral, quaternary 1,2-diamines in a mild and completely stereoselective way. The obtained 3,3'-bisoxindole derivatives were fully characterized by NMR and single-crystal X-ray diffraction analysis and proved to be single diastereoisomers and atropisomers. A plausible mechanism for the one-pot Cu(II)-catalyzed Bpin addition to the isatin-derived ketimine substrate and subsequent homocoupling is described.
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Affiliation(s)
- Marco Manenti
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, Milano, 20133, Italy
| | - Leonardo Lo Presti
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, Milano, 20133, Italy
| | - Giorgio Molteni
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, Milano, 20133, Italy
| | - Alessandra Silvani
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, Milano, 20133, Italy
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5
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Manenti M, Gazzotti S, Lo Presti L, Molteni G, Silvani A. Highly diastereoselective entry to chiral oxindole-based β-amino boronic acids and spiro derivatives. Org Biomol Chem 2021; 19:7211-7216. [PMID: 34612343 DOI: 10.1039/d1ob01303c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We here describe the first Cu-catalysed, diastereoselective 1,2-addition of 1,1-diborylmethane to chiral ketimines for the synthesis of quaternary stereocenters and spiro compounds. The method provides easy access to a range of chiral, highly functionalized compounds, namely oxindole-based β,β'-disubstituted β-amino boronates, boron-containing peptidomimetics and six-, seven-membered spirocyclic hemiboronic esters. Such unprecedented compounds are mostly obtained in high yields and easily isolated as single diastereoisomers, paving the way to a more intense exploitation of boron-containing compounds in diversity-oriented chemistry and drug-discovery programs. Concerning stereochemistry, the application of Ellman's auxiliary strategy allows in principle to access both steric series of target compounds.
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Affiliation(s)
- Marco Manenti
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, Milano, 20133, Italy.
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6
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Molteni G, Silvani A. Spiro‐2‐oxindoles
via
1,3‐dipolar cycloadditions. A decade update. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100121] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Giorgio Molteni
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milan Italy
| | - Alessandra Silvani
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milan Italy
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7
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Abstract
This review summaries recent synthetic developments towards spirocyclic oxindoles and applications as valuable medicinal and synthetic targets.
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Affiliation(s)
- Alexander J. Boddy
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London W12 0BZ
- UK
| | - James A. Bull
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London W12 0BZ
- UK
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8
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Wang Y, Wei Z, Cao J, Liang D, Lin Y, Duan H. Synthesis of optically active 2-amino-1′-benzyl-2′,5-dioxo-5 H-spiro[indeno[1,2- b]pyran-4,3′-indoline]-3-carbonitriles catalyzed by a bifunctional squaramide derived from quinine. NEW J CHEM 2021. [DOI: 10.1039/d0nj06092e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first organocatalytic asymmetric reaction of propylene malononitrile with oxoindole and 1,3-indandione for the synthesis of chiral indeno-spiro compounds has been developed.
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Affiliation(s)
- Yuanyuan Wang
- Department of Chemistry
- Jilin University
- 130012 Changchun
- China
| | - Zhonglin Wei
- Department of Chemistry
- Jilin University
- 130012 Changchun
- China
| | - Jungang Cao
- Department of Chemistry
- Jilin University
- 130012 Changchun
- China
| | - Dapeng Liang
- Department of Chemistry
- Jilin University
- 130012 Changchun
- China
| | - Yingjie Lin
- Department of Chemistry
- Jilin University
- 130012 Changchun
- China
| | - Haifeng Duan
- Department of Chemistry
- Jilin University
- 130012 Changchun
- China
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9
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Gataullin RR. Advances in the Synthesis of Benzo‐Fused Spiro Nitrogen Heterocycles: New Approaches and Modification of Old Strategies. Helv Chim Acta 2020. [DOI: 10.1002/hlca.202000137] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Rail R. Gataullin
- Ufa Federal Research Centre Ufa Institute of Chemistry of the Russian Academy of Sciences Prospect Oktyabrya, 71 Ufa 450054 Russian Federation
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10
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The versatility of DABCO: synthetic applications of its basic, nucleophilic, and catalytic properties Part 2*. Catalysis of Michael and Biginelli reactions and nucleophilic addition at C=X and C≡X bonds. Chem Heterocycl Compd (N Y) 2020. [DOI: 10.1007/s10593-020-02637-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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11
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Becker MR, Richardson AD, Schindler CS. Functionalized azetidines via visible light-enabled aza Paternò-Büchi reactions. Nat Commun 2019; 10:5095. [PMID: 31704919 PMCID: PMC6841681 DOI: 10.1038/s41467-019-13072-x] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 10/17/2019] [Indexed: 01/26/2023] Open
Abstract
Azetidines are four-membered nitrogen-containing heterocycles that hold great promise in current medicinal chemistry due to their desirable pharmacokinetic effects. However, a lack of efficient synthetic methods to access functionalized azetidines has hampered their incorporation into pharmaceutical lead structures. As a [2+2] cycloaddition reaction between imines and alkenes, the aza Paternò-Büchi reaction arguably represents the most direct approach to functionalized azetidines. Hampered by competing reaction paths accessible upon photochemical excitation of the substrates, the current synthetic utility of these transformations is greatly restricted. We herein report the development of a visible light-enabled aza Paternò-Büchi reaction that surmounts existing limitations and represents a mild solution for the direct formation of functionalized azetidines from imine and alkene containing precursors.
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Affiliation(s)
- Marc R Becker
- Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Alistair D Richardson
- Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Corinna S Schindler
- Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA.
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12
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Li CT, Liu H, Yao Y, Lu CD. Rearrangement of N- tert-Butanesulfinyl Enamines for Synthesis of Enantioenriched α-Hydroxy Ketone Derivatives. Org Lett 2019; 21:8383-8388. [PMID: 31592671 DOI: 10.1021/acs.orglett.9b03159] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Treating chiral N-tert-butanesulfinyl ketimines with potassium hexamethyldisilazide (or potassium tert-butoxide) and methyl triflate gives N-methylated N-tert-butanesulfinyl enamine intermediates that undergo stereoselective [2,3]-rearrangement to afford α-sulfenyloxy ketones with excellent enantiopurities. This cascade of enamination-N-methylation-rearrangement was even used to generate acyclic tertiary α-hydroxy ketones bearing two α-substituents showing negligible differences in bulkiness, such as methyl and ethyl groups.
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Affiliation(s)
- Chun-Tian Li
- Xinjiang Technical Institute of Physics & Chemistry , Chinese Academy of Sciences , Urumqi 830011 , China
| | - Hui Liu
- Xinjiang Technical Institute of Physics & Chemistry , Chinese Academy of Sciences , Urumqi 830011 , China
| | - Yun Yao
- School of Chemical Science and Technology , Yunnan University , Kunming 650091 , China
| | - Chong-Dao Lu
- School of Chemical Science and Technology , Yunnan University , Kunming 650091 , China
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13
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Ruggeri M, Dombrowski AW, Djuric SW, Baxendale IR. Photochemical Flow Synthesis of 3‐Hydroxyazetidines. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900188] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Michele Ruggeri
- Department of ChemistryUniversity of Durham South Road Durham DH1 3LE UK
| | - Amanda W. Dombrowski
- Discovery Chemistry and TechnologyAbbVie Inc. Waukegan Road, North Chicago Illinois 60064 USA
| | - Stevan W. Djuric
- Discovery Chemistry and TechnologyAbbVie Inc. Waukegan Road, North Chicago Illinois 60064 USA
| | - I. R. Baxendale
- Department of ChemistryUniversity of Durham South Road Durham DH1 3LE UK
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14
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Ramesh S, Balakumar R, Rizzo JR, Zhang TY. Facile synthesis of 2-azaspiro[3.4]octane. Org Biomol Chem 2019; 17:3056-3065. [PMID: 30834400 DOI: 10.1039/c9ob00306a] [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
Our annulation strategy utilized for the synthesis of 2-azaspiro[3.4]octane is explained. Three successful routes for the synthesis were developed. One of the approaches involved annulation of the cyclopentane ring and the remaining two approaches involved annulation of the four membered ring. All three approaches employ readily available starting materials with conventional chemical transformations and minimal chromatographic purifications to afford the title compound. The merits and limitations of the three approaches are also discussed.
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Affiliation(s)
- Subbiah Ramesh
- Syngene International Ltd., Biocon Park, Plot No. 2 & 3, Bommasandra IV Phase, Jigani Link Road, Bangalore 560 099, India.
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15
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Gazzotti S, Manenti M, Lo Presti L, Silvani A. Allylation of isatin-derived N-Boc-hydrazones followed by Pd-catalyzed carboamination reaction: an entry to 3-spiro-pyrazolidyl-oxindoles. RSC Adv 2019; 9:37788-37800. [PMID: 35541813 PMCID: PMC9075743 DOI: 10.1039/c9ra07712j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 11/11/2019] [Indexed: 11/21/2022] Open
Abstract
The indium-mediated allylation of novel 3-(2-Boc-hydrazono)indolin-2-one derivatives, followed by a palladium-catalysed carboamination reaction, is described to afford unprecedented spirocyclic oxindoles in good yields. The method provides an efficient access to both cis and trans diastereoisomers of highly functionalized compounds, bearing an N-Boc, 5-substituted pyrazolidine ring at the C3-oxindole spiro junction. The versatility of the method is fully demonstrated starting from a series of substituted isatins and employing a variety of aryl halides in the key cyclization step. The indium-mediated allylation of novel 3-(2-Boc-hydrazono)indolin-2-one derivatives, followed by a palladium-catalysed carboamination reaction, is described to afford unprecedented spirocyclic oxindoles in good yields.![]()
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Affiliation(s)
| | - Marco Manenti
- Dipartimento di Chimica
- Universitá di Milano
- Milano
- Italy
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16
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Rainoldi G, Lesma G, Picozzi C, Lo Presti L, Silvani A. One step access to oxindole-based β-lactams through Ugi four-center three-component reaction. RSC Adv 2018; 8:34903-34910. [PMID: 35547060 PMCID: PMC9087354 DOI: 10.1039/c8ra08165d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 10/04/2018] [Indexed: 12/11/2022] Open
Abstract
A multicomponent Ugi reaction involving isatin, isocyanide and β-amino acid components has been developed. The reactions proceeded smoothly to give β-lactam-containing 3,3-disubstituted oxindoles in only one step and generally high yields. When chiral, non racemic, β-amino acids were used, products were obtained as enantiomerically pure β-lactams diastereoisomers, whose relative stereochemistry was determined by X-ray analysis. For one compound, a weak antibacterial activity has been preliminarily highlighted.
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Affiliation(s)
- Giulia Rainoldi
- Dipartimento di Chimica, Università degli Studi di Milano Via Golgi 19 Milano, 20133 Italy
| | - Giordano Lesma
- Dipartimento di Chimica, Università degli Studi di Milano Via Golgi 19 Milano, 20133 Italy
| | - Claudia Picozzi
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Division of Food Microbiology and Bioprocessing Via Celoria 2 20133 Milan Italy
| | - Leonardo Lo Presti
- Dipartimento di Chimica, Università degli Studi di Milano Via Golgi 19 Milano, 20133 Italy
| | - Alessandra Silvani
- Dipartimento di Chimica, Università degli Studi di Milano Via Golgi 19 Milano, 20133 Italy
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17
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Kumar NP, Vanjari Y, Thatikonda S, Pooladanda V, Sharma P, Sridhar B, Godugu C, Kamal A, Shankaraiah N. Synthesis of enamino-2-oxindoles via conjugate addition between α-azido ketones and 3-alkenyl oxindoles: Cytotoxicity evaluation and apoptosis inducing studies. Bioorg Med Chem Lett 2018; 28:3564-3573. [PMID: 30318440 DOI: 10.1016/j.bmcl.2018.07.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 06/12/2018] [Accepted: 07/26/2018] [Indexed: 11/29/2022]
Abstract
A facile method for the construction of double bond between 3-ylidene oxindoles and α-azido ketones has been successfully accomplished with a mild base. This method features azido reduction with concomitant double bond formation to provide the new class of bioactive enamino-2-oxindoles. These new compounds were screened for their in vitro cytotoxic potential on selected human cancer cell lines such as colon, lung, breast, and cervical cancer cells. Among them, representative compounds 3a, 3h, 3k, 3p, 3w and 3x showed notable cytotoxicity profile with IC50 values ranging from 1.40 ± 0.10 to 28.7 ± 0.36 µM. Compound 3k displayed most potent cytotoxicity against lung cancer (NCI-H460) cells with an IC50 value of 1.40 ± 0.10 µM. 3k also arrested the G2/M phase of the cell cycle and induced distinctive apoptotic features on lung cancer cells. The apoptosis induction is supported by various cellular assays such as AO/EB, DAPI, and DCFDA staining studies including clonogenic assay. Extent of apoptosis was also analyzed by Annexin binding and JC-1 staining. Moreover, this method is amenable for the generation of a library of new class of stable bioactive enamino-2-oxindoles.
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Affiliation(s)
- Niggula Praveen Kumar
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Yogesh Vanjari
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Sowjanya Thatikonda
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Venkatesh Pooladanda
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Pankaj Sharma
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Balasubramanian Sridhar
- Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Chandraiah Godugu
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | - Ahmed Kamal
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India; School of Pharmaceutical Education and Research, Jamia Hamdard University, New Delhi 110062, India.
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
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18
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Gataullin RR. Exocyclic Double Bond in Benzo-Fused Nitrogen Heterocycles: Methods of Introduction and Syntheses with Its Participation. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2018. [DOI: 10.1134/s1070428018010013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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19
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Mohammadi Ziarani G, Moradi R, Lashgari N. Asymmetric synthesis of chiral oxindoles using isatin as starting material. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.025] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Rainoldi G, Begnini F, de Munnik M, Lo Presti L, Vande Velde CML, Orru R, Lesma G, Ruijter E, Silvani A. Sequential Multicomponent Strategy for the Diastereoselective Synthesis of Densely Functionalized Spirooxindole-Fused Thiazolidines. ACS COMBINATORIAL SCIENCE 2018; 20:98-105. [PMID: 29323868 DOI: 10.1021/acscombsci.7b00179] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We developed two Ugi-type three-component reactions of spirooxindole-fused 3-thiazolines, isocyanides, and either carboxylic acids or trimethylsilyl azide, to give highly functionalized spirooxindole-fused thiazolidines. Two diverse libraries were generated using practical and robust procedures affording the products in typically good yields. The obtained thiazolidines proved to be suitable substrates for further transformations. Notably, both the Ugi-Joullié and the azido-Ugi reactions resulted highly diastereoselective, affording predominantly the trans-configured products, as confirmed by X-ray crystallographic analysis.
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Affiliation(s)
- Giulia Rainoldi
- Dipartimento
di Chimica, Università degli Studi di Milano, via Golgi 19, Milano, 20133, Italy
| | - Fabio Begnini
- Department
of Chemistry—BMC, Uppsala University, Box 576, SE-751 23 Uppsala, Sweden
| | - Mariska de Munnik
- Department of Chemistry & Pharmaceutical Sciences and Amsterdam Institute of Molecules Medicines & Systems (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Leonardo Lo Presti
- Dipartimento
di Chimica, Università degli Studi di Milano, via Golgi 19, Milano, 20133, Italy
| | - Christophe M. L. Vande Velde
- Faculty
of Applied Engineering, Advanced Reactor Technology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
| | - Romano Orru
- Department of Chemistry & Pharmaceutical Sciences and Amsterdam Institute of Molecules Medicines & Systems (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Giordano Lesma
- Dipartimento
di Chimica, Università degli Studi di Milano, via Golgi 19, Milano, 20133, Italy
| | - Eelco Ruijter
- Department of Chemistry & Pharmaceutical Sciences and Amsterdam Institute of Molecules Medicines & Systems (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Alessandra Silvani
- Dipartimento
di Chimica, Università degli Studi di Milano, via Golgi 19, Milano, 20133, Italy
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21
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Tavani C, Bianchi L, Giorgi G, Maccagno M, Petrillo G. Densely Functionalized 2-Methylideneazetidines from Nitrodienic Building Blocks. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701467] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Cinzia Tavani
- Dipartimento di Chimica e Chimica Industriale; Università di Genova; Via Dodecaneso 31 16146 Genova Italy
| | - Lara Bianchi
- Dipartimento di Chimica e Chimica Industriale; Università di Genova; Via Dodecaneso 31 16146 Genova Italy
| | - Gianluca Giorgi
- Dipartimento di Biotecnologie; Chimica e Farmacia; Università di Siena; Via A. Moro 53100 Siena Italy
| | - Massimo Maccagno
- Dipartimento di Chimica e Chimica Industriale; Università di Genova; Via Dodecaneso 31 16146 Genova Italy
| | - Giovanni Petrillo
- Dipartimento di Chimica e Chimica Industriale; Università di Genova; Via Dodecaneso 31 16146 Genova Italy
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22
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Kaur J, Chimni SS. Catalytic synthesis of 3-aminooxindoles via addition to isatin imine: an update. Org Biomol Chem 2018; 16:3328-3347. [DOI: 10.1039/c7ob03002a] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
3-Substituted-3-aminooxindoles have attracted the attention of organic chemist to develop different synthetic methodologies for their synthesis using catalysts. This review covers the recent developments.
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Affiliation(s)
- Jasneet Kaur
- Department of Chemistry
- U.G.C. Centre of Advance Study-II
- Guru Nanak Dev University
- Amritsar
- India
| | - Swapandeep Singh Chimni
- Department of Chemistry
- U.G.C. Centre of Advance Study-II
- Guru Nanak Dev University
- Amritsar
- India
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23
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Mei GJ, Shi F. Catalytic asymmetric synthesis of spirooxindoles: recent developments. Chem Commun (Camb) 2018; 54:6607-6621. [DOI: 10.1039/c8cc02364f] [Citation(s) in RCA: 286] [Impact Index Per Article: 47.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The past four years have witnessed significant developments in the field of the catalytic asymmetric synthesis of spirooxindoles, and this feature article outlines the recent progress in this area, including the contributions of our group. This article is divided into sections according to the size and type of the generated spiro-ring fused at the C3-position of the oxindole core.
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Affiliation(s)
- Guang-Jian Mei
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- China
| | - Feng Shi
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- China
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24
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Rainoldi G, Faltracco M, Spatti C, Silvani A, Lesma G. Organocatalytic Access to Enantioenriched Spirooxindole-Based 4-Methyleneazetidines. Molecules 2017; 22:molecules22112016. [PMID: 29160827 PMCID: PMC6150293 DOI: 10.3390/molecules22112016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 11/15/2017] [Accepted: 11/17/2017] [Indexed: 12/28/2022] Open
Abstract
This work describes the synthesis of enantioenriched spiro compounds, incorporating the azetidine and the oxindole motifs. The preparation relies on a formal [2 + 2] annulation reaction of isatin-derived N-tert-butylsulfonyl ketimines with allenoates. The asymmetric induction is secured by an organocatalytic strategy, exploiting a bifunctional cinchona-type β-isocupridine-based catalyst. Some post-transformation products, including unexpected spiropyrroline and 3,3-disubstituted oxindole derivatives, are also presented.
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Affiliation(s)
- Giulia Rainoldi
- Department of Chemistry, University of Milan, via Golgi 19, 20133 Milan, Italy.
| | - Matteo Faltracco
- Department of Chemistry & Pharmaceutical Sciences, Amsterdam Institute of Molecules Medicines & Systems (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands.
| | - Claudia Spatti
- Department of Chemistry, University of Milan, via Golgi 19, 20133 Milan, Italy.
| | - Alessandra Silvani
- Department of Chemistry, University of Milan, via Golgi 19, 20133 Milan, Italy.
| | - Giordano Lesma
- Department of Chemistry, University of Milan, via Golgi 19, 20133 Milan, Italy.
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