1
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Chauhan A, Patel RK, Yadav A, Kant R, Kumar R. Anion-Relay Double Aza-Michael-Michael Cascades to Enone-Tethered Cyclohexadienones: Access to an Intricate Bridged Ring System. Org Lett 2024; 26:5602-5608. [PMID: 38924390 DOI: 10.1021/acs.orglett.4c01009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
An anion-relay double aza-Michael-Michael addition strategy has been reported for the synthesis of intricate scaffolds from enone-tethered cyclohexadienones and primary amines. This method discloses the base-catalyzed synthesis of highly valued bridged aza-tricyclic frameworks with a high level of product selectivity and stereoselectivity. Gram scale synthesis and synthetic transformation were shown to afford structurally diverse bridged aza-polycyclic amines. Control experiments and the kinetic profile were studied to determine a plausible reaction mechanism.
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Affiliation(s)
- Anil Chauhan
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, UP, India
| | - Raj Kumar Patel
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India
| | - Akhilesh Yadav
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, UP, India
| | - Ruchir Kant
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Ravindra Kumar
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, UP, India
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2
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Gorad SS, Ghorai P. Organocatalytic Desymmetric Double Aza-Michael Addition Cascade: Enantioselective Synthesis of Fused Morpholines. Org Lett 2024; 26:5571-5576. [PMID: 38921656 DOI: 10.1021/acs.orglett.4c01988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Double aza-Michael addition (DAM) has become an emerging strategy for the construction of two carbon-nitrogen bonds in a single step, which can significantly simplify the synthesis of N-heterocycles. Hitherto, their asymmetric catalytic genre remains unattempted. Herein, we describe the judicious design of an organocatalytic enantioselective desymmetric double aza-Michael addition cascade to access a series of functionalized fused morpholines with excellent yields and diastereo- and enantioselectivities. A one-pot telescopic synthesis was demonstrated for a bridged triheterocyclic compound. In addition, scale-up synthesis and various attractive postsynthetic modifications of the title products amplify the significance of the current methodology.
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Affiliation(s)
- Sachin S Gorad
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal-462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal-462066, India
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3
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Sui JJ, Wang K, Luo SJ, Guo K, Yuan MW, Qin HB. Total Synthesis of (±)-Simonsol C. J Org Chem 2024. [PMID: 38805614 DOI: 10.1021/acs.joc.4c00518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Total synthesis of simonsol C has been achieved, focusing on the postdearomatization transformations. Our methodology integrates an efficient combination of dearomatization and Zn/AcOH reduction to introduce an allyl group, followed by oxo-Michael addition, to construct the 6/5/6 benzofuran skeleton. It offers a novel method for synthesizing allyl-containing quaternary carbon atoms in a straightforward manner.
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Affiliation(s)
- Jia-Jun Sui
- School of Chemistry and Environment, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650504, China
| | - Kai Wang
- School of Chemistry and Environment, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650504, China
| | - Song-Juan Luo
- School of Chemistry and Environment, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650504, China
| | - Kang Guo
- School of Chemistry and Environment, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650504, China
| | - Ming-Wei Yuan
- School of Chemistry and Environment, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650504, China
| | - Hong-Bo Qin
- School of Chemistry and Environment, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650504, China
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4
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Chen Q, Zhang Y, Song Y, Zhang Y, Su Z, Feng X, Liu X. Asymmetric Synthesis of Hydroindoles via Desymmetrizing [3+2] Annulation of p-Quinamines and Arylalkylketenes. Org Lett 2024. [PMID: 38606985 DOI: 10.1021/acs.orglett.4c00780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
The asymmetric desymmetrizing [3+2] annulation reaction of p-quinamines and arylalkylketenes to synthesize hydroindoles was realized. Catalyzed by chiral bisguanidinium hemisalt via multiple hydrogen bond interactions, enantiomerically enriched products with reversal of diastereoselectivity in comparison with the racemic version were afforded in good yields under mild reaction conditions. Diaryl-substituted hydroindoles could also perform the Friedel-Crafts type of addition to give more complicated multicycles. Density functional theory calculations revealed that the enantio- and diastereoselectivity stem from varied hydrogen-bonding manners.
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Affiliation(s)
- Qianping Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yan Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yanji Song
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yang Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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5
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Reddy K, Stafford GI, Makunga NP. Skeletons in the closet? Using a bibliometric lens to visualise phytochemical and pharmacological activities linked to Sceletium, a mood enhancer. FRONTIERS IN PLANT SCIENCE 2024; 15:1268101. [PMID: 38576783 PMCID: PMC10991851 DOI: 10.3389/fpls.2024.1268101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 02/16/2024] [Indexed: 04/06/2024]
Abstract
Plants from the Sceletium genus (Aizoaceae) have been traditionally used for millennia by the Khoe and Khoen people in southern Africa, as an appetite suppressant as well as a mood elevator. In more recent times, this mood-elevating activity has been commercialised in the South African natural products industry for the treatment of anxiety and depression, with several products available both locally and abroad. Research on this species has seen rapid growth with advancements in analytical and pharmacological tools, in an effort to understand the composition and biological activity. The Web of Science (WoS) database was searched for articles related to 'Sceletium' and 'Mesembrine'. These data were additionally analysed by bibliometric software (VOSviewer) to generate term maps and author associations. The thematic areas with the most citations were South African Traditional Medicine for mental health (110) and anxiolytic agents (75). Pioneer studies in the genus focused on chemical structural isolation, purification, and characterisation and techniques such as thin layer chromatography, liquid chromatography (HPLC, UPLC, and more recently, LC-MS), gas chromatography mass spectrometry (GC-MS), and nuclear magnetic resonance (NMR) to study mesembrine alkaloids. Different laboratories have used a diverse range of extraction and preanalytical methods that became routinely favoured in the analysis of the main metabolites (mesembrine, mesembranol, mesembranone, and Sceletium A4) in their respective experimental settings. In contrast with previous reviews, this paper identified gaps in the research field, being a lack of toxicology assays, a deficit of clinical assessments, too few bioavailability studies, and little to no investigation into the minor alkaloid groups found in Sceletium. Future studies are likely to see innovations in analytical techniques like leaf spray mass spectrometry and direct analysis in real-time ionisation coupled with high-resolution time-of-flight mass spectrometry (DART-HR-TOF-MS) for rapid alkaloid identification and quality control purposes. While S. tortuosum has been the primary focus, studying other Sceletium species may aid in establishing chemotaxonomic relationships and addressing challenges with species misidentification. This research can benefit the nutraceutical industry and conservation efforts for the entire genus. At present, little to no pharmacological information is available in terms of the molecular physiological effects of mesembrine alkaloids in medical clinical settings. Research in these fields is expected to increase due to the growing interest in S. tortuosum as a herbal supplement and the potential development of mesembrine alkaloids into pharmaceutical drugs.
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Affiliation(s)
- Kaylan Reddy
- Department of Botany and Zoology, Natural Sciences Faculty, Stellenbosch University, Stellenbosch, South Africa
| | - Gary I. Stafford
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa
| | - Nokwanda P. Makunga
- Department of Botany and Zoology, Natural Sciences Faculty, Stellenbosch University, Stellenbosch, South Africa
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6
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Miller AAM, Biallas P, Shennan BDA, Dixon DJ. Enantioselective Total Synthesis of (+)-Incargranine A Enabled by Bifunctional Iminophosphorane and Iridium Catalysis. Angew Chem Int Ed Engl 2024; 63:e202314308. [PMID: 37955594 DOI: 10.1002/anie.202314308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 11/08/2023] [Accepted: 11/10/2023] [Indexed: 11/14/2023]
Abstract
Herein we report the first enantioselective total synthesis of (+)-incargranine A, in nine steps. The total synthesis was enabled by an enantioselective intramolecular organocatalysed desymmetrising Michael addition of a malonamate ester to a linked dienone substrate that established pivotal stereocentres with excellent enantio- and complete diastereoselectivity. Furthermore, a key hemiaminal intermediate was accessed by developing an iridium-catalysed reductive cyclisation, and the scope of this transformation was explored to produce a range of bicyclic hemiaminal motifs. Once installed, the hemiaminal motif was used to initiate a biomimetic cascade to access the natural product directly in a single step.
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Affiliation(s)
- Anna A M Miller
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Phillip Biallas
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Benjamin D A Shennan
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Darren J Dixon
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
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7
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Poh CYX, Rozsar D, Yang J, Christensen KE, Dixon DJ. Bifunctional Iminophosphorane Catalyzed Amide Enolization for Enantioselective Cyclohexadienone Desymmetrization. Angew Chem Int Ed Engl 2023:e202315401. [PMID: 38055190 DOI: 10.1002/anie.202315401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/07/2023]
Abstract
The organocatalytic enolization of 2-arylacetamides, followed by an enantioselective intramolecular conjugate addition to tethered 2,5-cyclohexadienones, yielding 3D fused N-heterocycles, is described. The transformation represents the first strong activating group-free activation of carboxamides via α-C-H deprotonation in a metal-free, catalytic, and enantioselective reaction, and is achieved by employing a bifunctional iminophosphorane (BIMP) superbase.
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Affiliation(s)
- Charmaine Y X Poh
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, UK
| | - Daniel Rozsar
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, UK
| | - Jinchao Yang
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, UK
| | - Kirsten E Christensen
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, UK
| | - Darren J Dixon
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, UK
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8
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Wu BS, Chao YW, Chen HS, Tsai CC. Desymmetrization of Cyclohexadienones through Phase-Transfer-Catalyzed Stereoselective Intramolecular Aza-Michael Addition with Chiral Sulfinamide Nucleophiles. J Org Chem 2023; 88:12835-12843. [PMID: 37562968 DOI: 10.1021/acs.joc.3c01253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
This paper reports the desymmetrization of cyclohexadienones through stereoselective intramolecular aza-Michael addition with a tethered chiral sulfinamide nucleophile. The reaction was facilitated by phase-transfer catalysis and produced various nitrogen-containing bicyclic compounds with a yield of up to 93% and a diastereomeric ratio of up to >20:1.
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Affiliation(s)
- Bing-Syuan Wu
- Department of Chemistry, Tunghai University, Taichung City 40704, Taiwan
| | - Yu-Wei Chao
- Department of Chemistry, Tunghai University, Taichung City 40704, Taiwan
| | - Hong-Sing Chen
- Department of Chemistry, Tunghai University, Taichung City 40704, Taiwan
| | - Cheng-Che Tsai
- Department of Chemistry, Tunghai University, Taichung City 40704, Taiwan
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9
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Li LQ, Zhao JQ, Zhang YP, You Y, Wang ZH, Ge ZZ, Zhou MQ, Yuan WC. Diastereoselective Formal 1,3-Dipolar Cycloaddition of Trifluoroethyl Amine-Derived Ketimines Enables the Desymmetrization of Cyclopentenediones. Molecules 2023; 28:5372. [PMID: 37513245 PMCID: PMC10386021 DOI: 10.3390/molecules28145372] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/07/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
In this research, a metal-free diastereoselective formal 1,3-dipolar cycloaddition of N-2,2,2-trifluoroethylisatin ketimines and cyclopentene-1,3-diones which can efficiently lead to the desymmetrization of cyclopentene-1,3-diones is developed. With the developed protocol, a series of tetracyclic spirooxindoles containing pyrrolidine and cyclopentane subunits can be smoothly obtained with good results (up to 99% yield and 91:9 dr). Furthermore, the methodology can be extended to trifluoromethyl-substituted iminomalonate, and the corresponding formal [3+2] cycloaddition reaction affords bicyclic heterocycles containing fused pyrrolidine and cyclopentane moieties in moderate yields with >20:1 dr. The synthetic potential of the methodology is demonstrated by the scale-up experiment and by versatile transformations of the products.
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Affiliation(s)
- Lin-Qiang Li
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, China
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Jian-Qiang Zhao
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yan-Ping Zhang
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yong You
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Zhen-Hua Wang
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Zhen-Zhen Ge
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Ming-Qiang Zhou
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, China
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Wei-Cheng Yuan
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, China
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10
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Cruz-Aguilar DA, Hernández-Rodríguez M. Stereoselective synthesis of highly substituted 1-isomorphans (1-azabicyclo[3.3.1]nonanes). Chem Commun (Camb) 2023. [PMID: 37379083 DOI: 10.1039/d3cc00621b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
We describe the first enantioselective synthesis of highly functionalized 1-azabicyclo[3.3.1]nonanes (1-IM). The 1-IM scaffold is present in natural products and drugs and is an isomer of the morphan moiety. The proposed methodology is based on an organocatalytic Michael addition of N-protected piperidine ketoesters to nitroalkenes and an intramolecular nitro-Mannich reaction as key transformations. The 1-IMs feature 6 contiguous stereocenters, substituents at positions 2 and 4, and nitro, ester, and hydroxyl functional groups at positions 3, 5, and 6 respectively. The synthesis is straightforward, highly stereoselective (up to 98% ee, >99 : 1 d.r.), with overall yields of up to 83% and requires only two purification steps.
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Affiliation(s)
- Diego A Cruz-Aguilar
- Instituto de Química, Universidad Nacional Autónoma de Mexico, Circuito Exterior, Ciudad Universitaria, Del. Coyoacán, Cd. Mx. 04510, Mexico.
| | - Marcos Hernández-Rodríguez
- Instituto de Química, Universidad Nacional Autónoma de Mexico, Circuito Exterior, Ciudad Universitaria, Del. Coyoacán, Cd. Mx. 04510, Mexico.
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11
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Tan TD, Qian GL, Su HZ, Zhu LJ, Ye LW, Zhou B, Hong X, Qian PC. Brønsted acid-catalyzed asymmetric dearomatization for synthesis of chiral fused polycyclic enone and indoline scaffolds. SCIENCE ADVANCES 2023; 9:eadg4648. [PMID: 36921050 PMCID: PMC10017053 DOI: 10.1126/sciadv.adg4648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
In the past two decades, substantial advances have been made on the asymmetric alkyne functionalization by the activation of inert alkynes. However, these asymmetric transformations have so far been mostly limited to transition metal catalysis, and chiral Brønsted acid-catalyzed examples are rarely explored. Here, we report a chiral Brønsted acid-catalyzed dearomatization reaction of phenol- and indole-tethered homopropargyl amines, allowing the practical and atom-economical synthesis of a diverse array of valuable fused polycyclic enones and indolines bearing a chiral quaternary carbon stereocenter and two contiguous stereogenic centers in moderate to good yields with excellent diastereoselectivities and generally excellent enantioselectivities (up to >99% enantiomeric excess). This protocol demonstrates Brønsted acid-catalyzed asymmetric dearomatizations via vinylidene-quinone methides.
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Affiliation(s)
- Tong-De Tan
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Gan-Lu Qian
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Hao-Ze Su
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Lu-Jing Zhu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Bo Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xin Hong
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
- Beijing National Laboratory for Molecular Sciences, Zhongguancun North First Street No. 2, Beijing 100190, China
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, China
| | - Peng-Cheng Qian
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, China
- Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials and Industry Technology, Wenzhou University, Wenzhou 325000, China
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12
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Organocatalysis for the Asymmetric Michael Addition of Aldehydes and α,β-Unsaturated Nitroalkenes. Catalysts 2022. [DOI: 10.3390/catal12020121] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Michael addition is an important reaction because it can be used to synthesize a wide range of natural products or complex compounds that exhibit biological activities. In this study, a mirror image of an aldehyde and α,β-unsaturated nitroalkene were reacted in the presence of (R,R)-1,2-diphenylethylenediamine (DPEN). Herein, thiourea was introduced as an organic catalyst, and a selective Michael addition reaction was carried out. The primary amine moiety of DPEN reacts with aldehydes to form enamines, which is activated by the hydrogen bond formation between the nitro groups of α,β-unsaturated nitroalkenes and thiourea. Our aim was to obtain an asymmetric Michael product by adding 1,4-enamine to an alkene to form a new carbon–carbon bond. As a result, the primary amine of the chiral diamine was converted to an enamine. The reaction proceeded with a relatively high degree of enantioselectivity, which was achieved using double activation via hydrogen bonding of the nitro group and thiourea. Michael products with a high degree of enantioselectivity (97–99% synee) and diastereoselectivity (syn/anti = 9/1) were obtained in yields ranging from 94–99% depending on the aldehydes.
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13
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Teng Q, Chen D, Tung CH, Xu Z. Asymmetric synthesis of tricyclic 6,5,5-fused polycycles by desymmetric Pauson-Khand reaction. Org Chem Front 2022. [DOI: 10.1039/d1qo01878g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new rhodium(I)-BINAP-catalyzed enantioselective desymmetric Pauson-Khand (PK) reaction of prochiral 1,6-enynes with CO has been developed. Diverse tricyclic 6,5,5-fused bowl type polycycles with three continuous chiral centers were synthesized in...
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14
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Lu C, Li X, Chang S, Zhang Y, Xing D, Wang S, Lin Y, Jiang H, Huang L. Thioamide synthesis via copper-catalyzed C–H activation of 1,2,3-thiadiazoles enabled by slow release and capture of thioketenes. Org Chem Front 2022. [DOI: 10.1039/d2qo00152g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A copper-catalyzed coupling of 1,2,3-thiadiazoles with various amines under base-free conditions was developed as a robust protocol for the synthesis of thioamide derivatives via C–H activation/Cu coordination strategy.
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Affiliation(s)
- Changhui Lu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Xiaohong Li
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Shunqin Chang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Yuqi Zhang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Donghui Xing
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Shuo Wang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Yueping Lin
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Liangbin Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
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15
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Farrar EHE, Grayson MN. Machine learning and semi-empirical calculations: a synergistic approach to rapid, accurate, and mechanism-based reaction barrier prediction. Chem Sci 2022; 13:7594-7603. [PMID: 35872815 PMCID: PMC9242013 DOI: 10.1039/d2sc02925a] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 06/08/2022] [Indexed: 11/21/2022] Open
Abstract
A synergistic approach that combines machine learning with semi-empirical methods enables the fast and accurate prediction of DFT-quality reaction barriers, with mechanistic insights available from semi-empirical transition state geometries.
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Affiliation(s)
- Elliot H. E. Farrar
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Matthew N. Grayson
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK
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16
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Shim JH, Park SJ, Ahn BK, Lee JY, Kim HS, Ha DC. Enantioselective Thiolysis and Aminolysis of Cyclic Anhydrides Using a Chiral Diamine-Derived Thiourea Catalyst. ACS OMEGA 2021; 6:34501-34511. [PMID: 34963935 PMCID: PMC8697410 DOI: 10.1021/acsomega.1c04741] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 11/16/2021] [Indexed: 06/14/2023]
Abstract
Catalytic desymmetrization of cyclic anhydrides has been widely investigated in the field of organocatalysis. Using this approach, many stereocenters can be established in a single, symmetry-breaking transformation. Herein, a thiourea organocatalyst was prepared in a single step from a chiral diamine, (R,R)-1,2-diphenylethylenediamine, and used for the desymmetrization of various cyclic anhydrides through double hydrogen-bonding activation. The asymmetric ring-opening reaction of the cyclic anhydride proceeded via the enantioselective addition reaction catalyzed by diamine thiourea. Thiolysis afforded the desired products in the yields of 86-98% and enantioselectivities of 60-94%, while aminolysis afforded the yields of 90-94% and enantioselectivities of 90-95%.
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Affiliation(s)
- Jae Ho Shim
- Department
of Anatomy, Korea University College of
Medicine, 46, Gaeunsa 2-gil, Seongbuk-gu, Seoul 02842, Republic of Korea
| | - Sung Joo Park
- Department
of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
| | - Byung Kook Ahn
- Department
of Anatomy, Korea University College of
Medicine, 46, Gaeunsa 2-gil, Seongbuk-gu, Seoul 02842, Republic of Korea
| | - Ji Yeon Lee
- Department
of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
| | - Hyeon Soo Kim
- Department
of Anatomy, Korea University College of
Medicine, 46, Gaeunsa 2-gil, Seongbuk-gu, Seoul 02842, Republic of Korea
| | - Deok-Chan Ha
- Department
of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
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17
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Kumar R, Singh FV, Takenaga N, Dohi T. Asymmetric Direct/Stepwise Dearomatization Reactions Involving Hypervalent Iodine Reagents. Chem Asian J 2021; 17:e202101115. [PMID: 34817125 DOI: 10.1002/asia.202101115] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 11/19/2021] [Indexed: 01/06/2023]
Abstract
A remarkable growth in hypervalent iodine-mediated oxidative transformations as stoichiometric reagents as well as catalysts has been well-documented due to their excellent properties, such as mildness, easy handling, high selectivity, environmentally friendly nature, and high stability. This review aims at highlighting the asymmetric oxidative dearomatization reactions involving hypervalent iodine compounds. The present article summarizes asymmetric intra- and intermolecular dearomatization reactions using chiral hypervalent iodine reagents/catalysts as well as hypervalent iodine-mediated dearomatization reactions followed by desymmetrization.
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Affiliation(s)
- Ravi Kumar
- Department of Chemistry, J. C. Bose University of Science & Technology, YMCA Faridabad, NH-2, Sector-6, Mathura Road, Faridabad, Haryana, 121006, India
| | - Fateh V Singh
- Chemistry Division, School of Advanced Sciences (SAS), Vellore Institute of Technology - Chennai, Chennai, 600127, Tamil Nadu, India
| | - Naoko Takenaga
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, 468-8503, Japan
| | - Toshifumi Dohi
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-0058, Japan
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18
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Hu KW, You X, Wang JZ, Wen X, Sun H, Xu QL, Lai Z. Chiral Phosphoric Acid Catalyzed Asymmetric Desymmetrization of para-Quinamines with Isocyanates: Access to Functionalized Imidazolidin-2-one Derivatives. Org Lett 2021; 23:7873-7877. [PMID: 34581589 DOI: 10.1021/acs.orglett.1c02889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The development of enantioselective desymmetrization of para-quinamines with isocyanates catalyzed by chiral phosphoric acid is reported. The strategy provides concise access to functionalized imidazolidin-2-one derivatives in high yields and enantioselectivities under mild reaction conditions. Remarkably, this reaction could be performed on a gram scale using 5 mol % catalyst loading and the chiral imidazolidin-2-one derivatives could be easily transformed into valuable scaffolds without disturbing the enantiopurity, demonstrating the synthetic utility of this protocol.
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Affiliation(s)
- Kai-Wen Hu
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, China
| | - Xiao You
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, China
| | - Jin-Zheng Wang
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, China
| | - Xiaoan Wen
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, China
| | - Hongbin Sun
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, China
| | - Qing-Long Xu
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210000, China
| | - Zengwei Lai
- 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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19
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Sánchez-Roselló M, Escolano M, Gaviña D, Del Pozo C. Two Decades of Progress in the Asymmetric Intramolecular aza-Michael Reaction. CHEM REC 2021; 22:e202100161. [PMID: 34415097 DOI: 10.1002/tcr.202100161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/22/2021] [Accepted: 08/04/2021] [Indexed: 11/08/2022]
Abstract
The asymmetric intramolecular aza-Michael reaction (IMAMR) is a very convenient strategy for the generation of heterocycles bearing nitrogen-substituted stereocenters. Due to the ubiquitous presence of these skeletons in natural products, the IMAMR has found widespread applications in the total synthesis of alkaloids and biologically relevant compounds. The development of asymmetric versions of the IMAMR are quite recent, most of them reported in this century. The fundamental advances in this field involve the use of organocatalysts. Chiral imidazolidinones, diaryl prolinol derivatives, Cinchone-derived primary amines and quaternary ammonium salts, and BINOL-derived phosphoric acids account for the success of those methodologies. Moreover, the use of N-sulfinyl imines with a dual role, as nitrogen nucleophiles and as chiral auxiliaries, appeared as a versatile mode of performing the asymmetric IMAMR.
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Affiliation(s)
- María Sánchez-Roselló
- Organic Chemistry, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia), Spain
| | - Marcos Escolano
- Organic Chemistry, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia), Spain
| | - Daniel Gaviña
- Organic Chemistry, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia), Spain
| | - Carlos Del Pozo
- Organic Chemistry, University of Valencia, Avda Vicente Andrés Estellés s/n, 46100-Burjassot, Valencia), Spain
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20
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Escolano M, Gaviña D, Torres J, Díaz‐Oltra S, Pozo C. Organocatalytic Enantioselective Intramolecular (Hetero)Michael Additions in Desymmetrization Processes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Marcos Escolano
- Department of Organic Chemistry University of Valencia Avda Vicente Andrés Estellés s/n 46100- Burjassot-Valencia Spain
| | - Daniel Gaviña
- Department of Organic Chemistry University of Valencia Avda Vicente Andrés Estellés s/n 46100- Burjassot-Valencia Spain
| | - Javier Torres
- Department of Organic Chemistry University of Valencia Avda Vicente Andrés Estellés s/n 46100- Burjassot-Valencia Spain
| | - Santiago Díaz‐Oltra
- Department of Organic Chemistry University of Valencia Avda Vicente Andrés Estellés s/n 46100- Burjassot-Valencia Spain
| | - Carlos Pozo
- Department of Organic Chemistry University of Valencia Avda Vicente Andrés Estellés s/n 46100- Burjassot-Valencia Spain
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21
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Zhou Y, Ping Y, Xu Z, Che C. Iron(III)‐BPsalan Complex Catalyzed Highly Enantioselective Dearomative Chlorination of 2‐Hydroxy‐1‐naphthoates. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yi‐Ming Zhou
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis Shanghai Institute of Organic Chemistry 345 Fenglin Road Shanghai P. R. China
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Normal University Shanghai 200234 P. R. China
| | - Yuan‐Ji Ping
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis Shanghai Institute of Organic Chemistry 345 Fenglin Road Shanghai P. R. China
| | - Zhen‐Jiang Xu
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis Shanghai Institute of Organic Chemistry 345 Fenglin Road Shanghai P. R. China
| | - Chi‐Ming Che
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis Shanghai Institute of Organic Chemistry 345 Fenglin Road Shanghai P. R. China
- State Key Laboratory of Synthetic Chemistry Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR P. R. China
- HKU Shenzhen Institute of Research and Innovation Shenzhen Guangdong 518057 P. R. China
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22
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Wang W, Dai J, Yang Q, Deng YH, Peng F, Shao Z. Palladium-Catalyzed Asymmetric Direct Intermolecular Allylation of α-Aryl Cyclic Vinylogous Esters: Divergent Synthesis of (+)-Oxomaritidine and (−)-Mesembrine. Org Lett 2021; 23:920-924. [DOI: 10.1021/acs.orglett.0c04125] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Wei Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, and School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Jun Dai
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, and School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Qiqiong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, and School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Yu-Hua Deng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, and School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Fangzhi Peng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, and School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Zhihui Shao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, and School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
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23
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Canesi S, Signo K, Deruer E, Coulibali S. An Arylative Aziridination Process toward Aspidosperma Alkaloids. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)44] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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Luo G, Chen L, Li Y, Fan Y, Wang D, Yang Y, Gao L, Jiang R, Song Z. Asymmetric total synthesis and antidepressant activity of (−)-sila-mesembranol bearing a silicon stereocenter. Org Chem Front 2021. [DOI: 10.1039/d1qo00682g] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Asymmetric total synthesis of (−)-sila-mesembranol, the silicon analog of the natural alkaloid (−)-mesembranol has been achieved in 3.3% yield over 11 steps. The synthetic (−)-sila-mesembranol in mice exhibits better antidepressant effects than its carbon counterpart.
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Affiliation(s)
- Gan Luo
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Lingmin Chen
- Laboratory of Anesthesia and Critical Care Medicine, Department of Anesthesiology, National-Local Joint Engineering Research Center of Translational Medicine of Anesthesiology, West China Hospital of Sichuan University, Chengdu, Sichuan, 610000, China
| | - Yi Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yu Fan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Duyang Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yufan Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Ruotian Jiang
- Laboratory of Anesthesia and Critical Care Medicine, Department of Anesthesiology, National-Local Joint Engineering Research Center of Translational Medicine of Anesthesiology, West China Hospital of Sichuan University, Chengdu, Sichuan, 610000, China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
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25
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Varlet T, Masson G. Enamides and dienamides in phosphoric acid-catalysed enantioselective cycloadditions for the synthesis of chiral amines. Chem Commun (Camb) 2021; 57:4089-4105. [DOI: 10.1039/d1cc00590a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This feature article describes how enamides and dienamides can participate in chiral phosphoric acid catalyzed enantioselective cycloadditions to prepare a wide range of cyclic amines.
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Affiliation(s)
- Thomas Varlet
- Université Paris-Saclay
- Institut de Chimie des Substances Naturelles
- ICSN-CNRS UPR 2301
- 91198 Gif-sur-Yvette
- France
| | - Géraldine Masson
- Université Paris-Saclay
- Institut de Chimie des Substances Naturelles
- ICSN-CNRS UPR 2301
- 91198 Gif-sur-Yvette
- France
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26
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Shim JH, Lee MJ, Lee MH, Kim BS, Ha DC. Enantioselective organocatalytic Michael reactions using chiral ( R, R)-1,2-diphenylethylenediamine-derived thioureas. RSC Adv 2020; 10:31808-31814. [PMID: 35518159 PMCID: PMC9056493 DOI: 10.1039/d0ra03550e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 08/20/2020] [Indexed: 11/21/2022] Open
Abstract
Although the Michael addition is a very well-known and widely applied reaction, cost-effective, metal-free, and readily prepared organic catalysts remain rare. A chiral, bifunctional, (R,R)-1,2-diphenylethylenediamine-derived thiourea organic catalyst was developed and applied to asymmetric Michael additions of nitroalkenes under neutral conditions. Generally, fluorine-substituted thiourea catalysts exhibited high chemical yields and enantioselectivities under neutral conditions. The mild reactions were tolerant of many functional groups and afforded good-to-excellent yields, as well as high diastereo- and enantioselectivities for the Michael adducts. The utility of the transformation was demonstrated by the synthesis of a bioactive compound, (R)-Phenibut.
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Affiliation(s)
- Jae Ho Shim
- Laboratory of Organic Synthesis, Department of Chemistry, Research Institute for Natural Sciences, Korea University Seoul 136-713 Korea
| | - Min Ji Lee
- Laboratory of Organic Synthesis, Department of Chemistry, Research Institute for Natural Sciences, Korea University Seoul 136-713 Korea
| | - Min Ho Lee
- Laboratory of Organic Synthesis, Department of Chemistry, Research Institute for Natural Sciences, Korea University Seoul 136-713 Korea
| | - Byeong-Seon Kim
- Department of Chemistry Education, Research Institute of Natural Science, Gyeongsang National University Jinju 52828 Korea
| | - Deok-Chan Ha
- Laboratory of Organic Synthesis, Department of Chemistry, Research Institute for Natural Sciences, Korea University Seoul 136-713 Korea
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27
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28
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Organocatalytic Asymmetric Michael Addition of Ketones to α, β-Unsaturated Nitro Compounds. Catalysts 2020. [DOI: 10.3390/catal10060618] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
An organic catalyst “(R, R)-1,2-diphenylethylenediamine(DPEN) derivative’’ was devel-oped as a chiral bifunctional organocatalyst and applied for asymmetric Michael additions of aromatic ketones to trans-β-nitroalkene compounds under neutral conditions. The isopropyl-subs-tituted thiourea catalyst in neutral condition provides high chemical yield and enantioselectivities (ee) (up to 96% yield, 98% ee).
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29
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Wu J, Zhang J, Soto-Acosta R, Mao L, Lian J, Chen K, Pillon G, Zhang G, Geraghty RJ, Zheng S. One-Pot Synthesis of 1-Hydroxyacridones from para-Quinols and ortho-Methoxycarbonylaryl Isocyanates. J Org Chem 2020; 85:4515-4524. [PMID: 32070098 DOI: 10.1021/acs.joc.9b03307] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A variety of substituted acridones were synthesized via a one-pot, metal-free cascade reaction. In this event, the DBU-mediated addition between quinols and ortho-methoxycarbonylaryl isocyanates formed a bicyclic oxazolidinone, followed by a sequence of intramolecular condensation, tautomerization, and decarboxylation, which led to the formation of acridones. The acridones showed mild activity against the human cytomegalovirus.
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Affiliation(s)
- Jing Wu
- Department of Chemistry, Hunter College, 695 Park Avenue, New York, New York 10065, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
| | - Jinzhu Zhang
- Department of Chemistry, Hunter College, 695 Park Avenue, New York, New York 10065, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
| | - Ruben Soto-Acosta
- Center for Drug Design, University of Minnesota, 312 Church Street SE, MMC 204, Minneapolis, Minnesota 55455, United States
| | - Lili Mao
- Center for Drug Design, University of Minnesota, 312 Church Street SE, MMC 204, Minneapolis, Minnesota 55455, United States
| | - Jiahui Lian
- Department of Chemistry, Hunter College, 695 Park Avenue, New York, New York 10065, United States
| | - Kenny Chen
- Department of Chemistry, Hunter College, 695 Park Avenue, New York, New York 10065, United States
| | - Guy Pillon
- Department of Chemistry, Hunter College, 695 Park Avenue, New York, New York 10065, United States
| | - Guoqi Zhang
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States.,Department of Sciences, John Jay College of Criminal Justice, 524 West 59th Street, New York, New York 10019, United States
| | - Robert J Geraghty
- Center for Drug Design, University of Minnesota, 312 Church Street SE, MMC 204, Minneapolis, Minnesota 55455, United States
| | - Shengping Zheng
- Department of Chemistry, Hunter College, 695 Park Avenue, New York, New York 10065, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
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30
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Teng Q, Mao W, Chen D, Wang Z, Tung C, Xu Z. Asymmetric Synthesis of a Fused Tricyclic Hydronaphthofuran Scaffold by Desymmetric [2+2+2] Cycloaddition. Angew Chem Int Ed Engl 2020; 59:2220-2224. [DOI: 10.1002/anie.201911071] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/15/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Qi Teng
- Key Lab for Colloid and Interface Chemistry of Education MinistryDepartment of ChemistryShandong University No. 27 South Shanda Road Jinan 250100 China
| | - Wenxiu Mao
- Key Lab for Colloid and Interface Chemistry of Education MinistryDepartment of ChemistryShandong University No. 27 South Shanda Road Jinan 250100 China
| | - Dong Chen
- Key Lab for Colloid and Interface Chemistry of Education MinistryDepartment of ChemistryShandong University No. 27 South Shanda Road Jinan 250100 China
| | - Zhen Wang
- Key Lab for Colloid and Interface Chemistry of Education MinistryDepartment of ChemistryShandong University No. 27 South Shanda Road Jinan 250100 China
| | - Chen‐Ho Tung
- Key Lab for Colloid and Interface Chemistry of Education MinistryDepartment of ChemistryShandong University No. 27 South Shanda Road Jinan 250100 China
| | - Zhenghu Xu
- Key Lab for Colloid and Interface Chemistry of Education MinistryDepartment of ChemistryShandong University No. 27 South Shanda Road Jinan 250100 China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences Shanghai 200032 China
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31
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Al-Tel TH, Srinivasulu V, Ramanathan M, Soares NC, Sebastian A, Bolognesi ML, Abu-Yousef IA, Majdalawieh A. Stereocontrolled transformations of cyclohexadienone derivatives to access stereochemically rich and natural product-inspired architectures. Org Biomol Chem 2020; 18:8526-8571. [PMID: 33043327 DOI: 10.1039/d0ob01550d] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The last two decades or so have witnessed an upsurge in defining the art of designing complex natural products and nature-inspired molecules. Throughout these decades, fundamental insights into stereocontrolled, step-economic and atom-economical synthesis principles were achieved by the numerous synthetic accomplishments particularly in diversity-oriented synthesis (DOS). This has empowered the visualization of the third dimension in synthetic design and thus has resulted in a dramatic increase with today's diversity-oriented synthesis (DOS) at the forefront enabling access to diverse scaffolds with a high degree of stereochemical and skeletal complexity. To this end, a starting material-based approach is one of the powerful tools utilized in DOS that allows rapid access to molecular architectures with a high sp3 content. Skeletal and stereochemical diversity is often paramount for the selective modulation of the biological function of a complementary protein in the biological space. In this context, stereocontrolled transformation of cyclohexadienone scaffolds has positioned itself as a powerful platform for the rapid generation of stereochemically enriched and natural product-inspired compound collections. In this review, we cover multidirectional synthetic strategies that utilized cyclohexadienone derivatives as pluripotent building blocks en route for the construction of novel chemical space.
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Affiliation(s)
- Taleb H Al-Tel
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
| | - Vunnam Srinivasulu
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
| | - Mani Ramanathan
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Nelson C Soares
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
| | - Anusha Sebastian
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Maria L Bolognesi
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum - Università di Bologna, Via Belmeloro, 6, 40126 Bologna, Italy
| | - Imad A Abu-Yousef
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Amin Majdalawieh
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
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32
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Escolano M, Guerola M, Torres J, Gaviña D, Alzuet-Piña G, Sánchez-Rosello M, del Pozo C. Organocatalytic enantioselective synthesis of 2,5,5-trisubstituted piperidines bearing a quaternary stereocenter. Vinyl sulfonamide as a new amine protecting group. Chem Commun (Camb) 2020; 56:1425-1428. [DOI: 10.1039/c9cc09113k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An organocatalytic desymmetrizing IMAMR with vinyl sulfonamides as nitrogen nucleophiles has been devised with good levels of diastereo- and enantioselectivity.
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Affiliation(s)
- Marcos Escolano
- Department of Organic Chemistry
- University of Valencia
- Valencia
- Spain
| | - Marta Guerola
- Department of Organic Chemistry
- University of Valencia
- Valencia
- Spain
| | - Javier Torres
- Department of Organic Chemistry
- University of Valencia
- Valencia
- Spain
| | - Daniel Gaviña
- Department of Organic Chemistry
- University of Valencia
- Valencia
- Spain
| | | | | | - Carlos del Pozo
- Department of Organic Chemistry
- University of Valencia
- Valencia
- Spain
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33
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Teng Q, Mao W, Chen D, Wang Z, Tung C, Xu Z. Asymmetric Synthesis of a Fused Tricyclic Hydronaphthofuran Scaffold by Desymmetric [2+2+2] Cycloaddition. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911071] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Qi Teng
- Key Lab for Colloid and Interface Chemistry of Education MinistryDepartment of ChemistryShandong University No. 27 South Shanda Road Jinan 250100 China
| | - Wenxiu Mao
- Key Lab for Colloid and Interface Chemistry of Education MinistryDepartment of ChemistryShandong University No. 27 South Shanda Road Jinan 250100 China
| | - Dong Chen
- Key Lab for Colloid and Interface Chemistry of Education MinistryDepartment of ChemistryShandong University No. 27 South Shanda Road Jinan 250100 China
| | - Zhen Wang
- Key Lab for Colloid and Interface Chemistry of Education MinistryDepartment of ChemistryShandong University No. 27 South Shanda Road Jinan 250100 China
| | - Chen‐Ho Tung
- Key Lab for Colloid and Interface Chemistry of Education MinistryDepartment of ChemistryShandong University No. 27 South Shanda Road Jinan 250100 China
| | - Zhenghu Xu
- Key Lab for Colloid and Interface Chemistry of Education MinistryDepartment of ChemistryShandong University No. 27 South Shanda Road Jinan 250100 China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences Shanghai 200032 China
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34
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Teng Q, Thirupathi N, Tung CH, Xu Z. Hydroalkynylative cyclization of 1,6-enynes with terminal alkynes. Chem Sci 2019; 10:6863-6867. [PMID: 31391909 PMCID: PMC6657412 DOI: 10.1039/c9sc02341k] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 06/07/2019] [Indexed: 11/25/2022] Open
Abstract
A rhodium-catalyzed highly regio- and enantioselective hydroalkynylation generating cis-hydrobenzofuranone-tethered enynes has been developed. The reaction proceeds with a dynamic kinetic head-to-head insertion and symmetry breaking Michael addition cascade.
A rhodium-catalyzed highly regio- and enantioselective hydroalkynylation, generating cis-hydrobenzofuranone-tethered enynes has been developed. The reaction proceeds with a selective head-to-head insertion and symmetry breaking Michael addition cascade. One product was produced from tens of possible isomers through precise control of chemo-, regio-, and stereoselectivities using a single rhodium catalyst. Notable features of this method include 100% atom-economy, mild reaction conditions and a very broad substrate scope.
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Affiliation(s)
- Qi Teng
- Key Lab for Colloid and Interface Chemistry of Education Ministry , School of Chemistry and Chemical Engineering , Shandong University , Jinan 250100 , People's Republic of China .
| | - Nuligonda Thirupathi
- Key Lab for Colloid and Interface Chemistry of Education Ministry , School of Chemistry and Chemical Engineering , Shandong University , Jinan 250100 , People's Republic of China .
| | - Chen-Ho Tung
- Key Lab for Colloid and Interface Chemistry of Education Ministry , School of Chemistry and Chemical Engineering , Shandong University , Jinan 250100 , People's Republic of China .
| | - Zhenghu Xu
- Key Lab for Colloid and Interface Chemistry of Education Ministry , School of Chemistry and Chemical Engineering , Shandong University , Jinan 250100 , People's Republic of China . .,State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , Shanghai 200032 , PR China
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35
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Han S, Liu S, Liu L, Ackermann L, Li J. Cobalt-Catalyzed Diastereoselective Difluoroalkylation/Giese Addition Domino Reactions. Org Lett 2019; 21:5387-5391. [DOI: 10.1021/acs.orglett.9b01400] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shengnan Han
- School of Pharmaceutical Sciences, Jiangnan University, Lihu Road 1800, 214122 Wuxi, Jiangsu, China
| | - Shaodong Liu
- School of Pharmaceutical Sciences, Jiangnan University, Lihu Road 1800, 214122 Wuxi, Jiangsu, China
| | - Lei Liu
- School of Pharmaceutical Sciences, Jiangnan University, Lihu Road 1800, 214122 Wuxi, Jiangsu, China
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen, Tammannstrasse 2, 37077 Göttingen, Germany
| | - Jie Li
- School of Pharmaceutical Sciences, Jiangnan University, Lihu Road 1800, 214122 Wuxi, Jiangsu, China
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36
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Rajasekar S, Anbarasan P. Tandem Rh(II) and Chiral Squaramide Relay Catalysis: Enantioselective Synthesis of Dihydro-β-carbolines via Insertion to C–H Bond and Aza-Michael Reaction. Org Lett 2019; 21:3067-3071. [DOI: 10.1021/acs.orglett.9b00652] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Shanmugam Rajasekar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Pazhamalai Anbarasan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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37
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Palladium-mediated domino oxidative amination of cyclohexadienes as an entry to indole alkaloids. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.12.043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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38
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Singh A, Shukla RK, Volla CMR. Palladium-catalyzed highly diastereoselective cascade dihalogenation of alkyne-tethered cyclohexadienones via Umpolung of palladium enolate. Chem Commun (Camb) 2019; 55:13442-13445. [DOI: 10.1039/c9cc07164d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly regio- and diastereoselective Pd(ii)-catalyzed cascade dihalogenation of alkyne-tethered cyclohexadienones proceeding via an electrophilic oxa-π-allyl palladium-species was demonstrated.
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Affiliation(s)
- Anurag Singh
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
| | - Rahul K. Shukla
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
| | - Chandra M. R. Volla
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
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39
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Yang WL, Sun ZT, Zhang J, Li Z, Deng WP. Enantioselective synthesis of 3-amino-hydrobenzofuran-2,5-diones via Cu(i)-catalyzed intramolecular conjugate addition of imino esters. Org Chem Front 2019. [DOI: 10.1039/c8qo01335g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The copper-catalyzed enantioselective intramolecular conjugate addition of imino esters for desymmetrization of cyclohexadienones was described, providing access to enantioenriched 3-amino-hydrobenzofuran-2,5-diones.
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Affiliation(s)
- Wu-Lin Yang
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Zhong-Tao Sun
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Jian Zhang
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Wei-Ping Deng
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
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40
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Vinogradov MG, Turova OV, Zlotin SG. Recent advances in the asymmetric synthesis of pharmacology-relevant nitrogen heterocycles via stereoselective aza-Michael reactions. Org Biomol Chem 2019; 17:3670-3708. [DOI: 10.1039/c8ob03034k] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this review, recent applications of a stereoselective aza-Michael reaction for asymmetric synthesis of naturally occurring N-containing heterocyclic scaffolds and their usefulness to pharmacology are summarized.
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Affiliation(s)
- Maxim G. Vinogradov
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Olga V. Turova
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Sergei G. Zlotin
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
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41
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Reddy TP, Krishna AV, Ramachary DB. Catalytic [3 + 3]-Cycloaddition for Regioselective Preparation of Tricyclic Oxadiazines. Org Lett 2018; 20:6979-6983. [DOI: 10.1021/acs.orglett.8b02719] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- T. Prabhakar Reddy
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad-500 046, India
| | - A. Vamshi Krishna
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad-500 046, India
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42
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Li K, Jin Z, Chan WL, Lu Y. Enantioselective Construction of Bicyclic Pyran and Hydrindane Scaffolds via Intramolecular Rauhut–Currier Reactions Catalyzed by Thiourea-Phosphines. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02706] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kaizhi Li
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Zhichao Jin
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Wai-Lun Chan
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Yixin Lu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
- National University of Singapore (Suzhou) Research Institute, 377 Lin Quan Street, Suzhou Industrial Park, Suzhou, Jiangsu P. R. China, 215123
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43
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Verma P, Chandra A, Pandey G. Diversity-Oriented Approach Toward the Syntheses of Amaryllidaceae Alkaloids via a Common Chiral Synthon. J Org Chem 2018; 83:9968-9977. [PMID: 30005155 DOI: 10.1021/acs.joc.8b01368] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Functionalized hydroindole (1), a common chiral synthon, for versatile transformations to synthesize a broad range of Amaryllidaceae alkaloids (AAs) including (-)-crinine, (-)-crinane, (-)-amabiline, (+)-mesembrine, (-)-maritidine, (-)-oxomaritidine, and (+)-mesembrane is reported. Scaffold 1 is found as a prime structural motif in a wide variety of the AAs and is a novel synthon toward designing a divergent route for the synthesis of these natural products. This is established in a few steps, starting from a chiral aza-bicyclo-heptene sulfone scaffold (2) via conjugate addition and concomitant stereoselective ring opening with allylmagnesium bromide, a key step that generates a crucial quaternary stereocenter, fixing the stereochemistry of the rest of the molecule at an early stage. One carbon truncation followed by intramolecular reductive amination led to the desired core 1 in a multigram scale.
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Affiliation(s)
- Prachi Verma
- Molecular Synthesis and Drug Discovery Lab , Centre of Biomedical Research, SGPGI Campus , Raibarely Road , Lucknow , Uttar Pradesh 226014 , India
| | - Atish Chandra
- Molecular Synthesis and Drug Discovery Lab , Centre of Biomedical Research, SGPGI Campus , Raibarely Road , Lucknow , Uttar Pradesh 226014 , India
| | - Ganesh Pandey
- Molecular Synthesis and Drug Discovery Lab , Centre of Biomedical Research, SGPGI Campus , Raibarely Road , Lucknow , Uttar Pradesh 226014 , India
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44
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Shu T, Zhao L, Li S, Chen XY, von Essen C, Rissanen K, Enders D. Asymmetric Synthesis of Spirocyclic β-Lactams through Copper-Catalyzed Kinugasa/Michael Domino Reactions. Angew Chem Int Ed Engl 2018; 57:10985-10988. [DOI: 10.1002/anie.201806931] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Tao Shu
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Long Zhao
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Sun Li
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Xiang-Yu Chen
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Carolina von Essen
- Department of Chemistry; University of Jyväskylä; P. O. Box 35 40014 Jyväskylä Finland
| | - Kari Rissanen
- Department of Chemistry; University of Jyväskylä; P. O. Box 35 40014 Jyväskylä Finland
| | - Dieter Enders
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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45
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Shu T, Zhao L, Li S, Chen XY, von Essen C, Rissanen K, Enders D. Asymmetric Synthesis of Spirocyclic β-Lactams through Copper-Catalyzed Kinugasa/Michael Domino Reactions. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806931] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Tao Shu
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Long Zhao
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Sun Li
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Xiang-Yu Chen
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Carolina von Essen
- Department of Chemistry; University of Jyväskylä; P. O. Box 35 40014 Jyväskylä Finland
| | - Kari Rissanen
- Department of Chemistry; University of Jyväskylä; P. O. Box 35 40014 Jyväskylä Finland
| | - Dieter Enders
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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46
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Roy TK, Parhi B, Ghorai P. Cinchonamine Squaramide Catalyzed Asymmetric aza-Michael Reaction: Dihydroisoquinolines and Tetrahydropyridines. Angew Chem Int Ed Engl 2018; 57:9397-9401. [DOI: 10.1002/anie.201805020] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Tarun Kumar Roy
- Department of Chemistry; Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road Bhauri Bhopal- 462066 India
| | - Biswajit Parhi
- Department of Chemistry; Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road Bhauri Bhopal- 462066 India
| | - Prasanta Ghorai
- Department of Chemistry; Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road Bhauri Bhopal- 462066 India
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47
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Roy TK, Parhi B, Ghorai P. Cinchonamine Squaramide Catalyzed Asymmetric aza-Michael Reaction: Dihydroisoquinolines and Tetrahydropyridines. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tarun Kumar Roy
- Department of Chemistry; Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road Bhauri Bhopal- 462066 India
| | - Biswajit Parhi
- Department of Chemistry; Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road Bhauri Bhopal- 462066 India
| | - Prasanta Ghorai
- Department of Chemistry; Indian Institute of Science Education and Research (IISER) Bhopal; Bhopal By-pass Road Bhauri Bhopal- 462066 India
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48
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Xing JJ, Gao YN, Shi M. Phosphine-Initiated Cascade Annulation of β′-Acetoxy Allenoate and p
-Quinols: Access to Ring Fused Hexahydroindeno Furan Derivatives. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800319] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jiao-Jiao Xing
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Yu-Ning Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; Tianjin 300071 People's Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 354 Fenglin Lu Shanghai 200032 People's Republic of China
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49
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Wang YF, Shao JJ, Wang B, Chu MM, Qi SS, Du XH, Xu DQ. Asymmetric Brominative Dearomatization of Naphthols Catalyzed by Chiral Copper Complexes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800067] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yi-Feng Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; Hangzhou 310014 People's Republic of China
| | - Juan-Juan Shao
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; Hangzhou 310014 People's Republic of China
| | - Biao Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; Hangzhou 310014 People's Republic of China
| | - Ming-Ming Chu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; Hangzhou 310014 People's Republic of China
| | - Suo-Suo Qi
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; Hangzhou 310014 People's Republic of China
| | - Xiao-Hua Du
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; Hangzhou 310014 People's Republic of China
| | - Dan-Qian Xu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; Hangzhou 310014 People's Republic of China
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50
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Czekelius C. Total Synthesis of Mesembrine - The Construction of Quaternary Stereocenters by Gold-Catalyzed Diyne Desymmetrization. Isr J Chem 2018. [DOI: 10.1002/ijch.201700060] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Constantin Czekelius
- Institute for Organic Chemistry and Macromolecular Chemistry; Heinrich-Heine-Universität Düsseldorf; Universitätsstrasse 1 D-40225 Düsseldorf
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