51
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Yang RY, Sun J, Tao Y, Sun Q, Yan CG. TfOH-Catalyzed One-Pot Domino Reaction for Diastereoselective Synthesis of Polysubstituted Tetrahydrospiro[carbazole-1,3′-indoline]s. J Org Chem 2017; 82:13277-13287. [DOI: 10.1021/acs.joc.7b02397] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ren-Yin Yang
- College of Chemistry and
Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Jing Sun
- College of Chemistry and
Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Yao Tao
- College of Chemistry and
Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Qiu Sun
- College of Chemistry and
Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chao-Guo Yan
- College of Chemistry and
Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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52
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Tamoto A, Aratani N, Yamada H. Contraction of π‐Conjugated Rings upon Oxidation from Cyclooctatetraene to Benzene via the Tropylium Cation. Chemistry 2017; 23:16388-16392. [DOI: 10.1002/chem.201704008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Akira Tamoto
- Graduate School of Materials Science Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho Ikoma 630-0192 Japan
| | - Naoki Aratani
- Graduate School of Materials Science Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho Ikoma 630-0192 Japan
| | - Hiroko Yamada
- Graduate School of Materials Science Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho Ikoma 630-0192 Japan
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53
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Pang X, Wu M, Ni J, Zhang F, Lan J, Chen B, Yan R. Copper-Catalyzed Tandem Aerobic Oxidative Cyclization for the Synthesis of Polysubstituted Quinolines via C(sp3)/C(sp2)–H Bond Functionalization. J Org Chem 2017; 82:10110-10120. [DOI: 10.1021/acs.joc.7b01575] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Xiaobo Pang
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Mingzhong Wu
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Jixiang Ni
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Fuming Zhang
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Jingfeng Lan
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Baohua Chen
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Rulong Yan
- State Key Laboratory of Applied
Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and
Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
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54
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Du Y, Li J, Chen K, Wu C, Zhou Y, Liu H. Construction of highly enantioenriched spirocyclopentaneoxindoles containing four consecutive stereocenters via thiourea-catalyzed asymmetric Michael-Henry cascade reactions. Beilstein J Org Chem 2017; 13:1342-1349. [PMID: 28781700 PMCID: PMC5530720 DOI: 10.3762/bjoc.13.131] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 06/21/2017] [Indexed: 01/28/2023] Open
Abstract
The thiourea-catalyzed asymmetric synthesis of highly enantioenriched spirocyclopentaneoxindoles containing chiral amide functional groups using simple 3-substituted oxindoles and nitrovinylacetamide as starting materials was achieved successfully. This protocol features operational simplicity, high atom economy, and high catalytic asymmetry, thus representing a versatile approach to the synthesis of highly enantioenriched spirocyclopentaneoxindoles.
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Affiliation(s)
- Yonglei Du
- Nano Science and Technology Institute, University of Science and Technology of China, 166 Ren Ai Road, Suzhou 215123, China
| | - Jian Li
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China
| | - Kerong Chen
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China
| | - Chenglin Wu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China
| | - Yu Zhou
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China
| | - Hong Liu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555, Zu Chong Zhi Road, Shanghai 201203, China.,University of Chinese Academy of Sciences, NO.19A Yuquan Road, Beijing 100049, China
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55
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Panda D, Saha P, Das T, Dash J. Target guided synthesis using DNA nano-templates for selectively assembling a G-quadruplex binding c-MYC inhibitor. Nat Commun 2017; 8:16103. [PMID: 28706243 PMCID: PMC5519986 DOI: 10.1038/ncomms16103] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Accepted: 05/30/2017] [Indexed: 02/06/2023] Open
Abstract
The development of small molecules is essential to modulate the cellular functions of biological targets in living system. Target Guided Synthesis (TGS) approaches have been used for the identification of potent small molecules for biological targets. We herein demonstrate an innovative example of TGS using DNA nano-templates that promote Huisgen cycloaddition from an array of azide and alkyne fragments. A G-quadruplex and a control duplex DNA nano-template have been prepared by assembling the DNA structures on gold-coated magnetic nanoparticles. The DNA nano-templates facilitate the regioselective formation of 1,4-substituted triazole products, which are easily isolated by magnetic decantation. The G-quadruplex nano-template can be easily recovered and reused for five reaction cycles. The major triazole product, generated by the G-quadruplex inhibits c-MYC expression by directly targeting the c-MYC promoter G-quadruplex. This work highlights that the nano-TGS approach may serve as a valuable strategy to generate target-selective ligands for drug discovery. Identification of inhibitors can be accelerated by using the target as a template for ligand formation. Here the authors show that DNA-functionalised magnetic nanoparticles guide templating of G-quadruplex binding c-MYC inhibitors from an array of building blocks, and can be isolated by magnetic decanting.
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Affiliation(s)
- Deepanjan Panda
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Puja Saha
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Tania Das
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
| | - Jyotirmayee Dash
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India
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56
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Mishra UK, Yadav S, Ramasastry SSV. One-Pot Multicatalytic Approaches for the Synthesis of Cyclohepta[b]indoles, Indolotropones, and Tetrahydrocarbazoles. J Org Chem 2017; 82:6729-6737. [DOI: 10.1021/acs.joc.7b00865] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Uttam K. Mishra
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector
81, S A S Nagar, Manauli PO, Punjab 140 306, India
| | - Sonu Yadav
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector
81, S A S Nagar, Manauli PO, Punjab 140 306, India
| | - S. S. V. Ramasastry
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector
81, S A S Nagar, Manauli PO, Punjab 140 306, India
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57
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Li YJ, Yan N, Liu CH, Yu Y, Zhao YL. Gold/Copper-Co-catalyzed Tandem Reactions of 2-Alkynylanilines: A Synthetic Strategy for the C2-Quaternary Indolin-3-ones. Org Lett 2017; 19:1160-1163. [DOI: 10.1021/acs.orglett.7b00200] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yi-Jin Li
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Na Yan
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Chun-Hua Liu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yang Yu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yu-Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
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58
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Maiti S, Burgula L, Chakraborti G, Dash J. Palladium-Catalyzed Pyridine-Directed Regioselective Oxidative C-H Acylation of Carbazoles by Using Aldehydes as the Acyl Source. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601322] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Subhadip Maiti
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; Jadavpur 700032 Kolkata India
| | - Laxminarayana Burgula
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; Jadavpur 700032 Kolkata India
| | - Gargi Chakraborti
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; Jadavpur 700032 Kolkata India
| | - Jyotirmayee Dash
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; Jadavpur 700032 Kolkata India
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59
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Reddy BN, Ramana CV. Synthesis of Functionalized 6-Hydroxy-2-oxindole Derivatives by Phenoxide Cyclization. Org Lett 2016; 18:6264-6267. [PMID: 27978630 DOI: 10.1021/acs.orglett.6b03048] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An apparent intramolecular cross-dehydrogenative coupling of N-(3-hydroxy)monoanilide of maleic esters comprising base promoted phenoxide cyclization and subsequent base-mediated aerobic oxidation was developed to synthesize a variety of 2-(6-hydroxy-2-oxoindolin-3-ylidene)acetate derivatives. The isolation of intermediate cyclized products during the large scale reactions and their ready dehydrogenation with 1 equiv of base support this proposed two-step path.
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Affiliation(s)
- B Narendraprasad Reddy
- Division of Organic Chemistry, CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road, Pune-411008, India
| | - Chepuri V Ramana
- Division of Organic Chemistry, CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road, Pune-411008, India
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60
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2015. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.08.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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61
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Huang YW, Li XY, Fu LN, Guo QX. Procedure for the Synthesis of Polysubstituted Carbazoles from 3-Vinyl Indoles. Org Lett 2016; 18:6200-6203. [DOI: 10.1021/acs.orglett.6b03257] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Yi-Wei Huang
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing, 400715, China
| | - Xiao-Yun Li
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing, 400715, China
| | - Li-Na Fu
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing, 400715, China
| | - Qi-Xiang Guo
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing, 400715, China
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62
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Sravanthi K, Agrawal SK, Rao CN, Khan FA. Synthesis of carbazole analogs via Grob fragmentation of norbornyl α-diketones. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.06.080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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63
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Kotha S, Ravikumar O. Ring-Rearrangement-Metathesis Approach to Polycycles: Substrate-Controlled Stereochemical Outcome During Grignard Addition. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600596] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry; Indian Institute of Technology-Bombay; Powai India
| | - Ongolu Ravikumar
- Department of Chemistry; Indian Institute of Technology-Bombay; Powai India
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