1
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Azaz T, Mourya H, Singh V, Ram B, Tiwari B. Reductive Alkenylation of Ketimines via Hydride Transfer from Aldehydes. J Org Chem 2023; 88:632-639. [PMID: 36475729 DOI: 10.1021/acs.joc.2c01508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The first direct N-heterocyclic carbene (NHC)-catalyzed preparation of allylic amines bearing a quaternary center (α-tertiary amine) from isatin-derived ketimines in the presence of vinyl selenones and aldehydes is reported. This multicomponent reaction is expected to proceed via unprecedented in situ reduction of imines through a hydride transfer from the aldehydes.
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Affiliation(s)
- Tazeen Azaz
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow 226014, India.,Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Hemlata Mourya
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow 226014, India
| | - Vikram Singh
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow 226014, India.,Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Bali Ram
- Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Bhoopendra Tiwari
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research, SGPGIMS-Campus, Raebareli Road, Lucknow 226014, India
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2
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Rahman AJM, Finck L, Obermayer W, Oestreich M. Synthesis of Benzhydryl-Substituted Amines by Silanolate-Mediated Aldimine Arylation with Functionalized Aryl Nucleophiles Released from Diazene-Based Reagents. Org Lett 2022; 24:9118-9122. [DOI: 10.1021/acs.orglett.2c03798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Aliyaah J. M. Rahman
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany
| | - Lucie Finck
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany
| | - Wolfgang Obermayer
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany
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3
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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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4
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Carret S, Poisson JF, Berthiol F, Achuenu C. 1,2-Additions on Chiral N-Sulfinylketimines: An Easy Access to Chiral α-Tertiary Amines. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0041-1737563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractChiral α-tertiary amines, a motif present in α,α-disubstituted α-amino acids, in a wide range of natural products, and many drugs and drug candidates, are important targets in organic chemistry. Among the possible strategies, 1,2-addition to chiral N-sulfinylketimines is one of the best routes to form chiral α-tertiary amines with a high level of stereoselectivity. In this review, we focus first on the addition of organometallic reagents or other nucleophiles as enols or ylides to chiral N-sulfinylketimines. Then secondly we cover a selection of applications of these additions in the synthesis of valuable biologically active compounds.1 Introduction2 1,2-Addition Reaction Methodologies2.1 Organolithium Reagent Additions2.2 Grignard Additions2.3 Organozinc Reagent Additions2.4 Organoindium Reagent Additions2.5 Organoboron Reagent Additions2.6 Strecker Reactions2.7 Palladium-Catalyzed Reactions2.8 Enols, Enolates, and Other Deprotonated Reagent Additions2.9 Ylide Additions2.10 Heteroatom Nucleophiles2.11 Miscellaneous Reactions3 Applications to the Synthesis of Biologically Active Molecules4 Conclusions
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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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7
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Orr SA, Andrews PC, Blair VL. Main Group Metal-Mediated Transformations of Imines. Chemistry 2021; 27:2569-2588. [PMID: 32761667 DOI: 10.1002/chem.202003108] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/02/2020] [Indexed: 12/20/2022]
Abstract
Main-group-metal-mediated transformations of imines have earned a valued place in the synthetic chemist's toolbox. Their versatility allows the simple preparation of various nitrogen containing compounds. This review will outline the early discoveries including metallation, addition/cyclisation and metathesis pathways, followed by the modern-day use of imines in synthetic methodology. Recent advances in imine C-F activation protocols are discussed, alongside revisiting "classic" imine reactivity from a sustainable perspective. Developments in catalytic methods for hydroelementation of imines have been reviewed, highlighting the importance of s-block metals in the catalytic arena. Whilst stoichiometric transformations in alternative reaction media such as deep eutectic solvents or water have been summarised. The incorporation of imines into flow chemistry has received recent attention and is summarised within.
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Affiliation(s)
- Samantha A Orr
- School of Chemistry, Monash University, Wellington Road, Clayton, Melbourne, VIC, 3800, Australia
| | - Philip C Andrews
- School of Chemistry, Monash University, Wellington Road, Clayton, Melbourne, VIC, 3800, Australia
| | - Victoria L Blair
- School of Chemistry, Monash University, Wellington Road, Clayton, Melbourne, VIC, 3800, Australia
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8
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Zhang C, Wu YC, Cui BD, Li L, Han WY, Wan NW, Chen YZ. Palladium-catalyzed asymmetric allylic alkylation of 3-aminooxindoles to access chiral homoallylic aminooxindoles. Org Biomol Chem 2021; 19:4720-4725. [PMID: 33969846 DOI: 10.1039/d1ob00550b] [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
An organometal catalytic conversion of 3-aminooxindoles for the diastereo- and enantioselective synthesis of homoallylic aminooxindoles has been described. The asymmetric allylic alkylation of 3-aminooxindoles with allyl carboxylates proceeded smoothly to afford a series of chiral 3-allyl-3-aminooxindoles. This work offers an alternative route to build these scaffolds. The application of this protocol is also highlighted by a significant conversion of products to the potential applicable spiro[indoline-3,2'-pyrrolidin]-2-one derivatives.
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Affiliation(s)
- Chao Zhang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563000, China. and Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563000, China
| | - You-Cai Wu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563000, China. and Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563000, China
| | - Bao-Dong Cui
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563000, China. and Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563000, China
| | - Lian Li
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563000, China. and Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563000, China
| | - Wen-Yong Han
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563000, China. and Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563000, China
| | - Nan-Wei Wan
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563000, China. and Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563000, China
| | - Yong-Zheng Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563000, China. and Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563000, China
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9
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Singh RP, Rao VUB, Singh S, Tripathi KN. Stereoselective Synthesis of Spiro-α-methylene-γ-lactams via Chiral Quaternary 3-Aminooxindole Adducts Accessed by Zn-Mediated Allylation of Sulfinyl Ketimines. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707907] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
An efficient method for the stereoselective synthesis of α-methylene-γ-lactams via quaternary 3-aminooxindoles with very high selectivity (up to 98% ee) is described. The methodology leads to the construction of sterically congested chiral quaternary 3-aminooxindole adducts in good yield and with moderate to excellent diastereoselectivity (dr up to 95:5). The relative stereochemistry of the chiral quaternary 3-aminooxindoles adduct and the spiro-α-methylene-γ-lactam was confirmed to be syn by single-crystal X-ray structure analysis. Furthermore, the α-methylene-γ-lactam was successfully transformed into a range of chiral synthons.
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10
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Novel 3,3-disubstituted oxindole derivatives. Synthesis and evaluation of the anti-proliferative activity. Bioorg Med Chem Lett 2019; 30:126845. [PMID: 31831381 DOI: 10.1016/j.bmcl.2019.126845] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 11/15/2019] [Accepted: 11/16/2019] [Indexed: 12/14/2022]
Abstract
3,3-Disubstituted oxindole derivatives bearing a nitrogen atom at the C-3 position have been synthesized starting from 3-alkyl oxindole through a metal free pathway. These derivatives have been tested in five human tumor cell lines (PC3, MCF7, SW620, MiaPaca2 and A375) and on primary cells (PBMCs) from healthy donors providing compound 6d showing a strong anticancer effect in all cancer lines on the low micromolar range.
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11
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Wang X, Huang D, Wang K, Liu J, Zong W, Wang J, Su Y, Hu Y. Tin powder promoted synthesis of trifluoroethylamine‐containing 3,3′‐disubstituted oxindoles. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4995] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xiaoping Wang
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Danfeng Huang
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Ke‐Hu Wang
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Jiaxin Liu
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Wuzhong Zong
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Juanjuan Wang
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Yingpeng Su
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
| | - Yulai Hu
- College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East 967 Road Lanzhou Gansu 730070 P. R. China
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12
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Griggs SD, Tape DT, Clarke PA. Strategies for the synthesis of spiropiperidines - a review of the last 10 years. Org Biomol Chem 2019; 16:6620-6633. [PMID: 29993083 DOI: 10.1039/c8ob01271g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Spiropiperidines have gained in popularity in drug discovery programmes as medicinal chemists explore new areas of three-dimensional chemical space. This review focuses on the methodology used for the construction of 2-, 3- and 4-spiropiperidines, covering the literature from the last 10 years. It classifies the synthesis of each of the types of spiropiperidine by synthetic strategy: the formation of the spiro-ring on a preformed piperidine ring, and the formation of the piperidine ring on a preformed carbo- or heterocyclic ring. While 3- and 4-spiropiperidines are predominantly synthesised for drug discovery projects, 2-spiropiperidines are synthesised en route to natural products. The lack of 2-spiropiperidines in drug discovery is presumably due to limited general procedures for their synthesis.
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Affiliation(s)
- Samuel D Griggs
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
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13
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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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14
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Muthusamy S, Balasubramani A, Suresh E. Boron Trifluoride Catalyzed Divergent Synthesis of 3-Alkenyl-3-amino-2-oxindoles and Spiro-indeneindolones from Propargylic Alcohols. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801106] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
| | | | - Eringathodi Suresh
- CSIR-Central Salt & Marine Chemicals Research Institute; Bhavnagar- 364002 India
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15
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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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16
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Li DF, Jin HS, Zhang JR, Jiang YX, Zhao LM. Protecting-Group-Free Synthesis of 3-Amino-3-α-prenyl-oxindoles through the Direct Prenylation of Isatin-Derived Imines. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800881] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- De-Feng Li
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
| | - Hai-Shan Jin
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
| | - Jing-Ru Zhang
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
| | - Yi-Xuan Jiang
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
| | - Li-Ming Zhao
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; Guangxi Normal University; 541004 Guangxi China
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17
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A diastereoselective Mannich reaction of α-fluoroketones with ketimines: Construction of β-fluoroamine motifs with vicinal tetrasubstituted stereocenters. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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18
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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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19
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Hajra S, Bhosale SS, Hazra A. An asymmetric acetate-Mannich reaction of chiral isatin derived ketimines and its applications. Org Biomol Chem 2017; 15:9217-9225. [PMID: 29082414 DOI: 10.1039/c7ob02407j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient TMSOTf-mediated asymmetric acetate-Mannich reaction of isatin derived tert-butylsulfinyl ketimines and S-phenyl thioacetate was developed to afford the direct synthesis of indole-based β3,3-amino acid thioester with excellent selectivity (dr > 98 : 2). Syntheses of (+)-AG-041R and 3-aminopyrroloindoline have been accomplished utilizing the developed method.
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Affiliation(s)
- Saumen Hajra
- Centre of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow 226014, India.
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20
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Rossetti A, Sacchetti A, Bonfanti M, Roda G, Rainoldi G, Silvani A. Biocatalysed olefin reduction of 3-alkylidene oxindoles by baker's yeast. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.06.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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21
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Sharma N, Peddinti RK. BF 3·OEt 2 Mediated Regioselective Reaction of Electron-Rich Arenes with 3-Ylidene Oxindoles. J Org Chem 2017; 82:918-924. [PMID: 27992723 DOI: 10.1021/acs.joc.6b02395] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A BF3·OEt2 mediated novel and regioselective protocol for the construction of a C-C bond between 3-ylidene oxindoles and electron-rich arenes has been successfully accomplished. The reaction was compatible with a wide variety of electron-rich arenes. A cascade reaction of 3-ylidene oxindoles with phenols and β-naphthol resulted in 2,3-difunctionalized benzofuran and lactone bearing indoline-2-one scaffolds under same conditions.
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Affiliation(s)
- Nitika Sharma
- Department of Chemistry, Indian Institute of Technology , Roorkee-247667, Uttarakhand, India
| | - Rama Krishna Peddinti
- Department of Chemistry, Indian Institute of Technology , Roorkee-247667, Uttarakhand, India
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22
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Yang S, Bian G, Chen Z, Xia X, Zhou M, Cui C, Song L. Highly efficient synthesis of chiral quaternary 3-aminooxindoles promoted by zinc( ii) chloride via Et 2Zn-catalysed addition of Grignard reagents to isaltin-derived N-tert-butanesulfinyl ketimines. RSC Adv 2017. [DOI: 10.1039/c7ra07692d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
An approach to chiral quaternary 3-aminooxindoles via Et2Zn catalyzed diastereoselective addition of various Grignard reagents to broad isaltin-derived N-tert-butanesulfinyl ketimines promoted by zinc(ii) chloride.
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Affiliation(s)
- Shiwei Yang
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Guangling Bian
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Zhongxiang Chen
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Xiaohan Xia
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Mi Zhou
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Caiyan Cui
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Ling Song
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
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23
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Nakazaki A. Asymmetric Synthesis of 3,3-Disubstituted Oxindoles from <i>N</i>-Aryl Oxindole Derivatives bearing C-N Axial Chirality. J SYN ORG CHEM JPN 2017. [DOI: 10.5059/yukigoseikyokaishi.75.821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Atsuo Nakazaki
- Graduate School of Bioagricultural Sciences, Nagoya University
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24
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St-Cyr DJ, García-Ramos Y, Doan ND, Lubell WD. Aminolactam, N-Aminoimidazolone, and N-Aminoimdazolidinone Peptide Mimics. TOPICS IN HETEROCYCLIC CHEMISTRY 2017. [DOI: 10.1007/7081_2017_204] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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25
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Nakazaki A, Mori A, Kobayashi S, Nishikawa T. A Divergent Approach to the Diastereoselective Synthesis of 3,3-Disubstituted Oxindoles from AtropisomericN-Aryl Oxindole Derivatives. Chem Asian J 2016; 11:3267-3274. [DOI: 10.1002/asia.201601183] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Atsuo Nakazaki
- Graduate School of Bioagricultural Sciences; Nagoya University, Furo-cho, Chikusa; Nagoya 464-8601 Japan
| | - Ayako Mori
- Graduate School of Bioagricultural Sciences; Nagoya University, Furo-cho, Chikusa; Nagoya 464-8601 Japan
| | - Susumu Kobayashi
- Faculty of Pharmaceutical Sciences; Tokyo University of Science; 2641 Yamazaki, Noda Chiba 278-8510 Japan
| | - Toshio Nishikawa
- Graduate School of Bioagricultural Sciences; Nagoya University, Furo-cho, Chikusa; Nagoya 464-8601 Japan
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26
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Chen J, Wen X, Wang Y, Du F, Cai L, Peng Y. Asymmetric Mannich Reaction of Isatin-Based Ketimines with α-Diazomethylphosphonates Catalyzed by Chiral Silver Phosphate. Org Lett 2016; 18:4336-9. [DOI: 10.1021/acs.orglett.6b02095] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Jing Chen
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, China
| | - Xiaojing Wen
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, China
| | - Yan Wang
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, China
| | - Fei Du
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, China
| | - Liu Cai
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, China
| | - Yungui Peng
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, China
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27
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Lian XL, Meng J, Han ZY. Ru(II)/Organo Relay Catalytic Three-Component Reaction of 3-Diazooxindoles, Amines, and Nitroalkene: Formal Synthesis of (−)-Psychotrimine. Org Lett 2016; 18:4270-3. [DOI: 10.1021/acs.orglett.6b02019] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Xiao-Lei Lian
- Hefei National Laboratory
for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Jing Meng
- Hefei National Laboratory
for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Zhi-Yong Han
- Hefei National Laboratory
for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
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28
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29
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Zhao M, Li NK, Zhang YF, Pan FF, Wang XW. Construction of 3-amino-2-oxindoles by direct amination of aniline or α-amino-acid derivatives to 3-bromooxindoles. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.01.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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30
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Stucchi M, Lesma G, Meneghetti F, Rainoldi G, Sacchetti A, Silvani A. Organocatalytic Asymmetric Biginelli-like Reaction Involving Isatin. J Org Chem 2016; 81:1877-84. [DOI: 10.1021/acs.joc.5b02680] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mattia Stucchi
- Dipartimento
di Chimica, Università degli Studi di Milano, via C. Golgi
19, 20133, Milano, Italy
| | - Giordano Lesma
- Dipartimento
di Chimica, Università degli Studi di Milano, via C. Golgi
19, 20133, Milano, Italy
| | - Fiorella Meneghetti
- Dipartimento
di Scienze Farmaceutiche, Università degli Studi di Milano, via L. Mangiagalli 25, 20133, Milano, Italy
| | - Giulia Rainoldi
- Dipartimento
di Chimica, Università degli Studi di Milano, via C. Golgi
19, 20133, Milano, Italy
| | - Alessandro Sacchetti
- Dipartimento
di Chimica, Materiali ed Ing. Chimica “Giulio Natta”, Politecnico di Milano, p.zza Leonardo da Vinci 32, 20133, Milano, Italy
| | - Alessandra Silvani
- Dipartimento
di Chimica, Università degli Studi di Milano, via C. Golgi
19, 20133, Milano, Italy
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31
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Synthesis of 3-aminooxindoles via acid-promoted cyclization of α-imino-N-arylamides and α-azido-N-arylamides. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.12.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Hajra S, Aziz SM, Jana B, Mahish P, Das D. Synthesis of Chiral Spiro-Aziridine Oxindoles via Aza-Corey-Chaykovsky Reaction of Isatin Derived N-tert-Butanesulfinyl Ketimines. Org Lett 2016; 18:532-5. [PMID: 26781920 DOI: 10.1021/acs.orglett.5b03564] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A general and direct strategy for the synthesis of chiral spiro-aziridine oxindoles has been developed via an aza-Corey-Chaykovsky reaction of isatin-derived N-tert-butanesulfinyl ketimines with excellent selectivity (dr = 98:2 to >99:1). The method is explored for the synthesis of chiral 3-substituted spiro-aziridine oxindoles with high (2S,3S)-selectivity over (2S,3R).
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Affiliation(s)
- Saumen Hajra
- Centre of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus , Raebareli Road, Lucknow 226014, India
| | - Sk Mohammad Aziz
- Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, India
| | - Bibekananda Jana
- Centre of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus , Raebareli Road, Lucknow 226014, India.,Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, India
| | - Prosenjit Mahish
- Centre of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus , Raebareli Road, Lucknow 226014, India.,Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, India
| | - Dhiraj Das
- Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, India
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33
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Chen T, Cai C. Imidazolylpyridine-In(OTf)3 catalyzed enantioselective allylation of ketimines derived from isatins. Org Biomol Chem 2016; 14:5019-22. [DOI: 10.1039/c6ob00551a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An enantioselective In(OTf)3-catalyzed allylation of ketimines derived from isatins in the presence of an imidazolylpyridine ligand is described.
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Affiliation(s)
- Tingting Chen
- College of Chemical Engineering
- Nanjing University of Science & Technology
- Nanjing
- China
| | - Chun Cai
- College of Chemical Engineering
- Nanjing University of Science & Technology
- Nanjing
- China
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34
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Rainoldi G, Faltracco M, Lo Presti L, Silvani A, Lesma G. Highly diastereoselective entry into chiral spirooxindole-based 4-methyleneazetidines via formal [2+2] annulation reaction. Chem Commun (Camb) 2016; 52:11575-8. [DOI: 10.1039/c6cc05838h] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We describe here a diastereoselective, DABCO-catalyzed reaction of allenoates with chiral N-tert-butanesulfinyl ketimines derived from isatin.
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Affiliation(s)
- G. Rainoldi
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - M. Faltracco
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - L. Lo Presti
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - A. Silvani
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - G. Lesma
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
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35
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Wang J, Huang D, Wang KH, Peng X, Su Y, Hu Y, Fu Y. Tin powder-promoted one-pot synthesis of 3-spiro-fused or 3,3′-disubstituted 2-oxindoles. Org Biomol Chem 2016; 14:9533-9542. [DOI: 10.1039/c6ob01487a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A convenient and efficient method for the constructions of 3-spirooxindole derivatives or 3,3′-disubstituted oxindoles has been developed from one-pot reactions of isatins, hydrazides or aromatic amines, 2-(bromomethyl)acrylic ester in the presence of a catalytic amount of Brønsted or Lewis acid promoted by tin powder instead of toxic stannanes.
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Affiliation(s)
- Juanjuan Wang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Danfeng Huang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Ke-Hu Wang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Xiansha Peng
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Yingpeng Su
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Yulai Hu
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
- State Key Laboratory of Applied Organic Chemistry
| | - Ying Fu
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
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36
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Rainoldi G, Sacchetti A, Silvani A, Lesma G. Organocatalytic vinylogous Mannich reaction of trimethylsiloxyfuran with isatin-derived benzhydryl-ketimines. Org Biomol Chem 2016; 14:7768-76. [DOI: 10.1039/c6ob01359g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We report the synthesis of chiral quaternary 3-aminooxindole butenolides by BINOL-derived phosphoric acid-catalyzed addition of trimethylsiloxyfuran to isatin-derived ketimines.
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Affiliation(s)
- Giulia Rainoldi
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - Alessandro Sacchetti
- Dipartimento di Chimica
- Materiali ed Ing. Chimica ‘Giulio Natta’
- Politecnico di Milano
- Milano
- Italy
| | | | - Giordano Lesma
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
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37
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He Q, Wu L, Kou X, Butt N, Yang G, Zhang W. Pd(II)-Catalyzed Asymmetric Addition of Arylboronic Acids to Isatin-Derived Ketimines. Org Lett 2015; 18:288-91. [DOI: 10.1021/acs.orglett.5b03458] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Qun He
- School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Liang Wu
- School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xuezhen Kou
- School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Nicholas Butt
- School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Guoqiang Yang
- School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Wanbin Zhang
- School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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38
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Marques CS, Burke AJ. Modular Catalytic Synthesis of 3-Amino-3-aryl-2-oxindoles: Rh Catalysis with Isatin-DerivedN-Boc-Protected Ketimines. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501399] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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39
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Aslam NA, Babu SA, Rani S, Mahajan S, Solanki J, Yasuda M, Baba A. Diastereoselective Construction of 3-Aminooxindoles with Adjacent Stereocenters: Stereocontrolled Addition of γ-Substituted Allylindiums to Isatin Ketimines. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500340] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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40
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Görbitz CH. Crystal structures of amino acids: from bond lengths in glycine to metal complexes and high-pressure polymorphs. CRYSTALLOGR REV 2015. [DOI: 10.1080/0889311x.2014.964229] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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41
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Fang B, Liu X, Zhao J, Tang Y, Lin L, Feng X. Chiral bifunctional guanidine-catalyzed enantioselective Aza-Henry reaction of isatin-derived ketimines. J Org Chem 2015; 80:3332-8. [PMID: 25723257 DOI: 10.1021/acs.joc.5b00075] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient asymmetric aza-Henry reaction of isatin-derived ketimines has been achieved by using a chiral guanidine-amide organocatalyst. A series of 3-substituted 3-amino-2-oxindoles was obtained with excellent results (up to 99% yield, 94% ee). Other functionalized derivatives were also conveniently transformed. This metal-free system was convenient, practical, and insensitive to air and moisture. On the basis of the crystal structure of the catalyst and NMR spectra analysis, a bifunctional catalytic model was suggested to explain the origin of the asymmetric process.
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42
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43
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Kaur J, Chimni SS, Mahajan S, Kumar A. Stereoselective synthesis of 3-amino-2-oxindoles from isatin imines: new scaffolds for bioactivity evaluation. RSC Adv 2015. [DOI: 10.1039/c5ra06969f] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
3-Substituted-3-aminooxindole motifs constitute the core structure of a number of natural products and drug candidates.
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Affiliation(s)
- Jasneet Kaur
- Department of Chemistry
- U.G.C. Centre of Advance Studies in Chemistry
- Guru Nanak Dev University
- Amritsar
- India
| | - Swapandeep Singh Chimni
- Department of Chemistry
- U.G.C. Centre of Advance Studies in Chemistry
- Guru Nanak Dev University
- Amritsar
- India
| | - Suhel Mahajan
- Department of Chemistry
- U.G.C. Centre of Advance Studies in Chemistry
- Guru Nanak Dev University
- Amritsar
- India
| | - Akshay Kumar
- Department of Chemistry
- DAV University
- Jalandhar
- India
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44
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Chen JP, Chen WW, Li Y, Xu MH. A highly diastereoselective Friedel–Crafts reaction of indoles with isatin-derived N-sulfinyl ketimines towards the efficient synthesis of chiral tetrasubstituted 3-indolyl-3-aminooxindoles. Org Biomol Chem 2015; 13:3363-70. [DOI: 10.1039/c5ob00063g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A Lewis acid promoted highly diastereoselective asymmetric Friedel–Crafts alkylation of indoles with isatin-derived N-tert-butanesulfinyl ketimines is described.
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Affiliation(s)
- Jian-Ping Chen
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Wen-Wen Chen
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Yi Li
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Ming-Hua Xu
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
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45
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Chen D, Xu MH. Lewis acid promoted diastereoselective addition of TMSCN and TMSCF3 to isatin-derived N-sulfinyl ketimines: synthesis of optically active tetrasubstituted 3-aminooxindoles. J Org Chem 2014; 79:7746-51. [PMID: 25045777 DOI: 10.1021/jo501360g] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A practical and efficient method for preparation of highly enantiomerically enriched 3-cyano-3-aminooxindoles and 3-trifluoromethyl-3-aminooxindoles with up to 99% optical purity by a Lewis acid promoted diastereoselective Strecker reaction and trifluoromethylation of isatin-derived N-tert-butanesulfinyl ketimines has been developed. This protocol allows direct use of N-free isatin substrates under mild conditions.
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Affiliation(s)
- Diao Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zuchongzhi Road, Shanghai 201203, China
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46
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Lesma G, Meneghetti F, Sacchetti A, Stucchi M, Silvani A. Asymmetric Ugi 3CR on isatin-derived ketimine: synthesis of chiral 3,3-disubstituted 3-aminooxindole derivatives. Beilstein J Org Chem 2014; 10:1383-9. [PMID: 24991292 PMCID: PMC4077467 DOI: 10.3762/bjoc.10.141] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 05/19/2014] [Indexed: 12/23/2022] Open
Abstract
An efficient Ugi three-component reaction of a preformed chiral ketimine derived from isatin with various isonitrile and acid components has been developed. The reactions proceeded smoothly and in a stereocontrolled manner with regard to the new center of the Ugi products due to the stereoinduction of the amine chiral residue. A wide variety of novel chiral 3,3-disubstituted 3-aminooxindoles were obtained, a selection of which were subjected to post-Ugi transformations, paving the way to application as peptidomimetics.
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Affiliation(s)
- Giordano Lesma
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi, 19, 20133 Milano (Italy)
| | - Fiorella Meneghetti
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, via L. Mangiagalli 25, 20133 Milano, Italy
| | - Alessandro Sacchetti
- Dipartimento di Chimica, Materiali e Ingegneria Chimica 'Giulio Natta', Politecnico di Milano, p.zza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Mattia Stucchi
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi, 19, 20133 Milano (Italy)
| | - Alessandra Silvani
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi, 19, 20133 Milano (Italy)
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47
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Li TZ, Wang XB, Sha F, Wu XY. Organocatalyzed Enantioselective Mannich Reaction of Pyrazoleamides with Isatin-Derived Ketimines. J Org Chem 2014; 79:4332-9. [DOI: 10.1021/jo500145w] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Tian-Ze Li
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, PR China
| | - Xi-Bo Wang
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, PR China
| | - Feng Sha
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, PR China
| | - Xin-Yan Wu
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, PR China
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48
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Rao VUB, Jadhav AP, Garad D, Singh RP. Asymmetric Vinylogous Mannich Reaction of Silyloxy Furans with N-tert-Butanesulfinyl Ketimines. Org Lett 2014; 16:648-51. [DOI: 10.1021/ol4037117] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- V. U. Bhaskara Rao
- Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, India 411008
| | - Amol P. Jadhav
- Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, India 411008
| | - Dnyaneshwar Garad
- Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, India 411008
| | - Ravi P. Singh
- Division of Organic Chemistry, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, India 411008
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49
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Li TZ, Wang XB, Sha F, Wu XY. Catalytic enantioselective addition of alcohols to isatin-derived N-Boc ketimines. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.076] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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50
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Shupe BH, Allen EE, MacDonald JP, Wilson SO, Franz AK. Synthesis of Spirocarbamate Oxindoles via Intramolecular Trapping of a β-Silyl Carbocation by an N-Boc Group. Org Lett 2013; 15:3218-21. [DOI: 10.1021/ol4010867] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Benjamin H. Shupe
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Emily E. Allen
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Jacob P. MacDonald
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Sean O. Wilson
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Annaliese K. Franz
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
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