1
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Zhang N, Wang C, Xu H, Zheng M, Jiang H, Chen K, Ma Z. Asymmetric Total Synthesis of Alstrostine G Utilizing a Catalytic Asymmetric Desymmetrization Strategy. Angew Chem Int Ed Engl 2024:e202407127. [PMID: 38818628 DOI: 10.1002/anie.202407127] [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: 04/15/2024] [Revised: 05/28/2024] [Accepted: 05/29/2024] [Indexed: 06/01/2024]
Abstract
A highly effective enantioselective monobenzoylation of 1,3-diols has been developed for the synthesis of 1,1-disubstituted tetrahydro-β-carbolines. The chemistry has been successfully applied to the asymmetric total synthesis of (+)-alstrostine G, which also features a cascade Heck/hemiamination reaction enabling facile construction of the pivotal pentacyclic core.
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Affiliation(s)
- Nanping Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
| | - Cheng Wang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
| | - Hailong Xu
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
| | - Ming Zheng
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Zhiqiang Ma
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, Guangdong, 518055, P. R. China
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2
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Biswas A. Organocatalyzed Asymmetric Pictet‐Spengler Reactions. ChemistrySelect 2023. [DOI: 10.1002/slct.202203368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Anup Biswas
- Departmentof Chemistry Hooghly Women's College Vivekanada Road, Pipulpati Hooghly 712102 India
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3
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Andres R, Sun F, Wang Q, Zhu J. Organocatalytic Enantioselective Pictet-Spengler Reaction of α-Ketoesters: Development and Application to the Total Synthesis of (+)-Alstratine A. Angew Chem Int Ed Engl 2023; 62:e202213831. [PMID: 36347809 DOI: 10.1002/anie.202213831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Indexed: 11/10/2022]
Abstract
We report herein an asymmetric Pictet-Spengler reaction of α-ketoesters. In the presence of a catalytic amount of simple alanine-derived squaramide and p-nitrobenzoic acid, reaction of tryptamines with methyl 2-oxoalkanoates afforded the corresponding 1-alkyl-1-methoxycarbonyl tetrahydro-β-carbolines (THBCs) in high yields and ee values. A primary kinetic isotope effect (KIE=4.5) using C2-deteurium-labelled tryptamine indicates that rearomatization through deprotonation of the pentahydro-β-carbolinium ion could be the rate- and enantioselectivity-determining step. A concise enantioselective total synthesis of (+)-alstratine A, a hexacyclic cagelike monoterpene indole alkaloid, featuring this reaction as a key step, was subsequently accomplished. Remeasurement of the [a]D value of the natural product indicates that natural alstratine A is dextrorotatory rather than levorotatory as it was initially reported in the isolation paper.
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Affiliation(s)
- Rémi Andres
- Laboratory of Synthesis and Natural Products (LSPN), Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH, 5304, 1015, Lausanne, Switzerland
| | - Fenggang Sun
- Laboratory of Synthesis and Natural Products (LSPN), Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH, 5304, 1015, Lausanne, Switzerland.,School of Chemical Engineering, Shandong University of Technology, Zibo, 255049, P. R. China
| | - Qian Wang
- Laboratory of Synthesis and Natural Products (LSPN), Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH, 5304, 1015, Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products (LSPN), Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH, 5304, 1015, Lausanne, Switzerland
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4
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Chen IT, Guan RY, Han JL. Asymmetric Sequential Vinylogous Mannich/annulation/acylation Process of 2‐Ethylidene 1,3‐indandiones and Isatin N‐Boc ketimines: Access to Chiral Spiro‐oxindole Piperidine Derivatives. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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5
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Andres R, Wang Q, Zhu J. Catalytic Enantioselective Pictet-Spengler Reaction of α-Ketoamides Catalyzed by a Single H-Bond Donor Organocatalyst. Angew Chem Int Ed Engl 2022; 61:e202201788. [PMID: 35225416 PMCID: PMC9313548 DOI: 10.1002/anie.202201788] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Indexed: 01/17/2023]
Abstract
The asymmetric Pictet–Spengler reaction (PSR) with aldehydes is well known. However, PSR involving ketones as electrophilic partners is far‐less developed. We report herein the first examples of catalytic enantioselective PSR of tryptamines with α‐ketoamides. A new class of easily accessible prolyl‐urea organocatalysts bearing a single H‐bond donor function catalyzes the title reaction to afford 1,1‐disubstituted tetrahydro‐β‐carbolines in excellent yields and enantioselectivities. The kinetic isotope effect using C2‐deuterium‐labelled tryptamine indicates that the rearomatization of the pentahydro‐β‐carbolinium ion intermediate might be the rate‐ and the enantioselectivity‐determining step.
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Affiliation(s)
- Rémi Andres
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH, 5304, 1015, Lausanne, Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH, 5304, 1015, Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH, 5304, 1015, Lausanne, Switzerland
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6
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Yang J, Wang Y, Guan W, Su W, Li G, Zhang S, Yao H. Spiral molecules with antimalarial activities: A review. Eur J Med Chem 2022; 237:114361. [DOI: 10.1016/j.ejmech.2022.114361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/03/2022] [Accepted: 04/04/2022] [Indexed: 11/04/2022]
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7
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Andres R, Wang Q, Zhu J. Catalytic Enantioselective Pictet–Spengler Reaction of α‐Ketoamides Catalyzed by a Single H‐Bond Donor Organocatalyst. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Rémi Andres
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015 Lausanne Switzerland
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8
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Nakamura S, Matsuda Y, Takehara T, Suzuki T. Enantioselective Pictet-Spengler Reaction of Acyclic α-Ketoesters Using Chiral Imidazoline-Phosphoric Acid Catalysts. Org Lett 2022; 24:1072-1076. [PMID: 35080408 DOI: 10.1021/acs.orglett.1c04316] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The first enantioselective Pictet-Spengler reaction of acyclic α-ketoesters with tryptamines has been developed. Excellent yields and enantioselectivity were obtained for the reaction using chiral imidazoline-phosphoric acid catalysts. Density functional theory calculations suggested possible transition states that explain the origin of chiral induction. This process provides an efficient route for the synthesis of tetrahydro-β-carboline derivatives.
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Affiliation(s)
- Shuichi Nakamura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan.,Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Yoichiro Matsuda
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Tsunayoshi Takehara
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
| | - Takeyuki Suzuki
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
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9
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del Corte X, Martínez de Marigorta E, Palacios F, Vicario J, Maestro A. An overview of the applications of chiral phosphoric acid organocatalysts in enantioselective additions to CO and CN bonds. Org Chem Front 2022. [DOI: 10.1039/d2qo01209j] [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
Since 2004, chiral phosphoric acids (CPAs) have emerged as highyl efficient organocatalysts, providing excellent results in a wide reaction scope. In this review, the applications of CPA for enantioselective additions to CO and CN bonds are covered.
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Affiliation(s)
- Xabier del Corte
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Edorta Martínez de Marigorta
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Francisco Palacios
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Javier Vicario
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Aitor Maestro
- Department of Organic Chemistry I, Faculty of Pharmacy, University of the Basque Country, UPV/EHU, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
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10
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Banerjee B, Priya A, Sharma A, Kaur G, Kaur M. Sulfonated β-cyclodextrins: efficient supramolecular organocatalysts for diverse organic transformations. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2021-0080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Abstract
The present review summarizes various organic transformations carried out by using sulfonated β-cyclodextrins such as β-cyclodextrin sulfonic acid, β-cyclodextrin propyl sulfonic acid, and β-cyclodextrin butyl sulfonic acid as an efficient, supramolecular reusable catalyst under diverse reaction conditions.
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Affiliation(s)
- Bubun Banerjee
- Department of Chemistry , Akal University , Talwandi Sabo , Bathinda , Punjab - 151302 , India
| | - Anu Priya
- Department of Chemistry , Akal University , Talwandi Sabo , Bathinda , Punjab - 151302 , India
| | - Aditi Sharma
- Department of Chemistry , Akal University , Talwandi Sabo , Bathinda , Punjab - 151302 , India
| | - Gurpreet Kaur
- Department of Chemistry , Akal University , Talwandi Sabo , Bathinda , Punjab - 151302 , India
| | - Manmeet Kaur
- Department of Chemistry , Akal University , Talwandi Sabo , Bathinda , Punjab - 151302 , India
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11
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Dandia A, Mahawar DK, Saini P, Saini S, Gupta SL, Rathore KS, Parewa V. Site-specific role of bifunctional graphitic carbon nitride catalyst for the sustainable synthesis of 3,3-spirocyclic oxindoles in aqueous media. RSC Adv 2021; 11:28452-28465. [PMID: 35478581 PMCID: PMC9038049 DOI: 10.1039/d1ra03881h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 08/08/2021] [Indexed: 12/14/2022] Open
Abstract
Functionalized graphitic carbon nitride (Sg-C3N4) has been manufactured and used as a reusable catalyst for the one-pot production of various spiro-pyrano chromenes and spiro indole-3,1′-naphthalene tetracyclic systems in aqueous media. An ultrasound-assisted method has been used for the functionalization of g-C3N4. The catalytic functionalities and the structural integrity of the catalyst were characterized via different analytical tools. The catalytic site-specific role of Sg-C3N4 was confirmed via various control experiments in one-pot reaction sequences. We recognized that Sg-C3N4 acts as a bifunctional acid–base catalyst for the first reaction sequence whereas it is an acidic catalyst for the second reaction sequence during the one-pot production of various spiro-pyrano chromenes. In addition, the bifunctional acid–base catalytic role of Sg-C3N4 has been confirmed for the first reaction sequence whereas it has a basic catalytic role for the second reaction sequence during the one-pot production of spiro indole-3,1′-naphthalene tetracyclic systems. Diverse C–C, C–O, and C–N bonds, six-membered cycles, stereogenic centers, and spiro frameworks were formed in a single reaction, enhancing the biocidal profile and possibly resulting in the discovery of new medicinal properties. The mild reaction environment, simple workup, easy separation, low cost, heterogeneity, and recyclability of Sg-C3N4 are some rewards of this approach. Functionalized graphitic carbon nitride (Sg-C3N4) has been manufactured and used as a reusable catalyst for the one-pot production of various spiro-pyrano chromenes and spiro indole-3,1′-naphthalene tetracyclic systems in aqueous media.![]()
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Affiliation(s)
- Anshu Dandia
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan Jaipur India
| | - Dinesh Kumar Mahawar
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan Jaipur India
| | - Pratibha Saini
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan Jaipur India
| | - Surendra Saini
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan Jaipur India
| | - Shyam L Gupta
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan Jaipur India .,Government Polytechnic College Near Itarana Fly Over, Kalimori Alwar Rajasthan 301001 India
| | - Kuldeep S Rathore
- Department of Physics, Arya College of Engineering and IT Jaipur India
| | - Vijay Parewa
- Centre of Advanced Studies, Department of Chemistry, University of Rajasthan Jaipur India
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12
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Kondo M, Matsuyama N, Aye TZ, Mattan I, Sato T, Makita Y, Ishibashi M, Arai MA, Takizawa S, Sasai H. Practical Stereoselective Synthesis of C3‐Spirooxindole‐ and C2‐Spiropseudoindoxyl‐Pyrrolidines
via
Organocatalyzed Pictet‐Spengler Reaction/Oxidative Rearrangement Sequence. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Masaru Kondo
- The Institute of Scientific and Industrial Research (ISIR) Osaka University Mihogaoka, Ibaraki-shi Osaka 567-0047 Japan
| | - Naoki Matsuyama
- The Institute of Scientific and Industrial Research (ISIR) Osaka University Mihogaoka, Ibaraki-shi Osaka 567-0047 Japan
| | - Tin Z. Aye
- The Institute of Scientific and Industrial Research (ISIR) Osaka University Mihogaoka, Ibaraki-shi Osaka 567-0047 Japan
| | - Irshad Mattan
- The Institute of Scientific and Industrial Research (ISIR) Osaka University Mihogaoka, Ibaraki-shi Osaka 567-0047 Japan
| | - Tomoyuki Sato
- Graduate School of Pharmaceutical Sciences Chiba University 1-8-1 Inohana, Chuo-ku Chiba 260-8675 Japan
| | - Yoshinori Makita
- Graduate School of Pharmaceutical Sciences Chiba University 1-8-1 Inohana, Chuo-ku Chiba 260-8675 Japan
- Faculty of Science and Technology Keio University 3-14-1 Hiyoshi, Kohoku-ku Yokohama Kanagawa 223–8522 Japan
| | - Masami Ishibashi
- Graduate School of Pharmaceutical Sciences Chiba University 1-8-1 Inohana, Chuo-ku Chiba 260-8675 Japan
| | - Midori A. Arai
- Faculty of Science and Technology Keio University 3-14-1 Hiyoshi, Kohoku-ku Yokohama Kanagawa 223–8522 Japan
| | - Shinobu Takizawa
- The Institute of Scientific and Industrial Research (ISIR) Osaka University Mihogaoka, Ibaraki-shi Osaka 567-0047 Japan
- Artificial Intelligence Research Center, ISIR Osaka University
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial Research (ISIR) Osaka University Mihogaoka, Ibaraki-shi Osaka 567-0047 Japan
- Artificial Intelligence Research Center, ISIR Osaka University
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13
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Lynch-Colameta T, Greta S, Snyder SA. Synthesis of aza-quaternary centers via Pictet-Spengler reactions of ketonitrones. Chem Sci 2021; 12:6181-6187. [PMID: 33996016 PMCID: PMC8098696 DOI: 10.1039/d1sc00882j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Accepted: 03/12/2021] [Indexed: 01/25/2023] Open
Abstract
Despite the array of advances that have been made in Pictet-Spengler chemistry, particularly as it relates to the synthesis of β-carboline derivatives of both natural and designed origin, the ability to use such reactions to generate aza-quaternary centers remains limited. Herein, we report a simple procedure that enables the synthesis of a variety of such products by harnessing the distinct reactivity profiles of ketonitrones as activated by commercially available acyl chlorides. Notably, the reaction process is mild, fast, and high-yielding (54-97%) for a diverse collection of substrates, including some typically challenging ones, such as indole cores with electron-deficient substituents. In addition, by deploying an acyl bromide in combination with a thiourea promoter, a catalytic, asymmetric version has been established, leading to good levels of enantioselectivity (up to 83% ee) for several ketonitrones. Finally, the resultant N-O bonds within the products can also be functionalized in several unique ways, affording valuable complementarity to existing Pictet-Spengler variants based on the use of imines.
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Affiliation(s)
- Tessa Lynch-Colameta
- Department of Chemistry, University of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
| | - Sarah Greta
- Department of Chemistry, University of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
| | - Scott A Snyder
- Department of Chemistry, University of Chicago 5735 S. Ellis Avenue Chicago IL 60637 USA
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14
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Pavithra D, Ethiraj KR, Nawaz Khan F. Cu‐TEMPO Catalyzed Dehydrogenative Friedlander Annulation/sp
3
C–H Functionalization/Spiroannulation towards Spiro[indoline‐3,3'‐pyrrolizin]‐2'‐yl)‐4‐phenylquinoline‐3‐Carboxylates. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Dalavai Pavithra
- Organic and Medicinal Chemistry Research Laboratory School of Advanced Sciences Vellore Institute of Technology 632014 Vellore Tamil Nadu India
| | - Kannat Radhakrishnan Ethiraj
- Organic and Medicinal Chemistry Research Laboratory School of Advanced Sciences Vellore Institute of Technology 632014 Vellore Tamil Nadu India
| | - Fazlur‐Rahman Nawaz Khan
- Organic and Medicinal Chemistry Research Laboratory School of Advanced Sciences Vellore Institute of Technology 632014 Vellore Tamil Nadu India
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15
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Andres R, Wang Q, Zhu J. Asymmetric Total Synthesis of (−)-Arborisidine and (−)-19-epi-Arborisidine Enabled by a Catalytic Enantioselective Pictet–Spengler Reaction. J Am Chem Soc 2020; 142:14276-14285. [DOI: 10.1021/jacs.0c05804] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Rémi Andres
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN BCH5304, CH-1015 Lausanne, Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN BCH5304, CH-1015 Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN BCH5304, CH-1015 Lausanne, Switzerland
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16
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Sakamoto J, Umeda Y, Rakumitsu K, Sumimoto M, Ishikawa H. Total Syntheses of (−)‐Strictosidine and Related Indole Alkaloid Glycosides. Angew Chem Int Ed Engl 2020; 59:13414-13422. [DOI: 10.1002/anie.202005748] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Indexed: 12/26/2022]
Affiliation(s)
- Jukiya Sakamoto
- Department of Chemistry Graduate School of Science and Technology Kumamoto University 2-39-1, Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Yuhei Umeda
- Department of Chemistry Graduate School of Science and Technology Kumamoto University 2-39-1, Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Kenta Rakumitsu
- Department of Chemistry Graduate School of Science and Technology Kumamoto University 2-39-1, Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Michinori Sumimoto
- Graduate School of Sciences and Technology for Innovation Yamaguchi University 2-16-1, Tokiwadai Ube Yamaguchi 755-8611 Japan
| | - Hayato Ishikawa
- Department of Chemistry Graduate School of Science and Technology Kumamoto University 2-39-1, Kurokami, Chuo-ku Kumamoto 860-8555 Japan
- Faculty of Advanced Science and Technology Kumamoto University 2-39-1, Kurokami, Chuo-ku Kumamoto 860-8555 Japan
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17
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Sakamoto J, Umeda Y, Rakumitsu K, Sumimoto M, Ishikawa H. Total Syntheses of (−)‐Strictosidine and Related Indole Alkaloid Glycosides. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005748] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jukiya Sakamoto
- Department of Chemistry Graduate School of Science and Technology Kumamoto University 2-39-1, Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Yuhei Umeda
- Department of Chemistry Graduate School of Science and Technology Kumamoto University 2-39-1, Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Kenta Rakumitsu
- Department of Chemistry Graduate School of Science and Technology Kumamoto University 2-39-1, Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Michinori Sumimoto
- Graduate School of Sciences and Technology for Innovation Yamaguchi University 2-16-1, Tokiwadai Ube Yamaguchi 755-8611 Japan
| | - Hayato Ishikawa
- Department of Chemistry Graduate School of Science and Technology Kumamoto University 2-39-1, Kurokami, Chuo-ku Kumamoto 860-8555 Japan
- Faculty of Advanced Science and Technology Kumamoto University 2-39-1, Kurokami, Chuo-ku Kumamoto 860-8555 Japan
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18
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Bhandari S, Sana S, Lahoti V, Tokala R, Shankaraiah N. Ring-opening cyclization of activated spiro-aziridine oxindoles with heteroarenes: a facile synthetic approach to spiro-oxindole-fused pyrroloindolines. RSC Adv 2020; 10:16101-16109. [PMID: 35493670 PMCID: PMC9052938 DOI: 10.1039/d0ra00684j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 03/30/2020] [Indexed: 12/22/2022] Open
Abstract
Herein, we report a facile tandem approach for the synthesis of both spiro-oxindole-fused pyrroloindolines and benzofurano-pyrrolidines via a Lewis acid-catalyzed domino ring-opening with concomitant ring annulation using activated spiro-aziridines and heteroarenes. This method offers a new class of novel spiro-fused polycyclic pyrrolidines in a one-pot and sustainable manner with good yields and high diastereoselectivity. In addition, the structure of 3d was confirmed by single X-ray crystallography analysis.
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Affiliation(s)
- Sonal Bhandari
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad-500037 India
| | - Sravani Sana
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad-500037 India
| | - Vandana Lahoti
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad-500037 India
| | - Ramya Tokala
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad-500037 India
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad-500037 India
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19
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Calcaterra A, Mangiardi L, Delle Monache G, Quaglio D, Balducci S, Berardozzi S, Iazzetti A, Franzini R, Botta B, Ghirga F. The Pictet-Spengler Reaction Updates Its Habits. Molecules 2020; 25:E414. [PMID: 31963860 PMCID: PMC7024544 DOI: 10.3390/molecules25020414] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/05/2020] [Accepted: 01/09/2020] [Indexed: 12/31/2022] Open
Abstract
The Pictet-Spengler reaction (P-S) is one of the most direct, efficient, and variable synthetic method for the construction of privileged pharmacophores such as tetrahydro-isoquinolines (THIQs), tetrahydro-β-carbolines (THBCs), and polyheterocyclic frameworks. In the lustro (five-year period) following its centenary birthday, the P-S reaction did not exit the stage but it came up again on limelight with new features. This review focuses on the interesting results achieved in this period (2011-2015), analyzing the versatility of this reaction. Classic P-S was reported in the total synthesis of complex alkaloids, in combination with chiral catalysts as well as for the generation of libraries of compounds in medicinal chemistry. The P-S has been used also in tandem reactions, with the sequences including ring closing metathesis, isomerization, Michael addition, and Gold- or Brønsted acid-catalyzed N-acyliminium cyclization. Moreover, the combination of P-S reaction with Ugi multicomponent reaction has been exploited for the construction of highly complex polycyclic architectures in few steps and high yields. The P-S reaction has also been successfully employed in solid-phase synthesis, affording products with different structures, including peptidomimetics, synthetic heterocycles, and natural compounds. Finally, the enzymatic version of P-S has been reported for biosynthesis, biotransformations, and bioconjugations.
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Affiliation(s)
- Andrea Calcaterra
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Laura Mangiardi
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
- Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena 291, 00161 Rome, Italy;
| | - Giuliano Delle Monache
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Deborah Quaglio
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Silvia Balducci
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Simone Berardozzi
- Department of Chemistry and Applied Biosciences, ETH-Zürich, Vladimir-Prelog Weg 4, 8093 Zürich, Switzerland
| | - Antonia Iazzetti
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Roberta Franzini
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Bruno Botta
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (L.M.); (G.D.M.); (D.Q.); (S.B.); (A.I.); (R.F.); (B.B.)
| | - Francesca Ghirga
- Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena 291, 00161 Rome, Italy;
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20
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Song J, Li Z, Wang G, Zhang N, Chen C, Chen J, Ren H, Pan W. Controllable Synthesis of Polyheterocyclic Spirooxindoles and 3,3‐Bistryptophol Oxindoles via Fe(ClO
4
)
3
⋅ 6H
2
O‐Promoted Hetero‐Pictet‐Spengler Reaction. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jun‐Rong Song
- State key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Guiyang 550014 People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences / Guizhou Provincial Engineering Research Center for Natural Drugs Guiyang 550014 People's Republic of China
| | - Zhi‐Yao Li
- Guizhou University Huaxi Avenue South Guiyang 550025 People's Republic of China
| | - Guang‐Di Wang
- Guizhou University Huaxi Avenue South Guiyang 550025 People's Republic of China
| | - Ni Zhang
- State key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Guiyang 550014 People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences / Guizhou Provincial Engineering Research Center for Natural Drugs Guiyang 550014 People's Republic of China
| | - Chao Chen
- State key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Guiyang 550014 People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences / Guizhou Provincial Engineering Research Center for Natural Drugs Guiyang 550014 People's Republic of China
| | - Juan Chen
- State key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Guiyang 550014 People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences / Guizhou Provincial Engineering Research Center for Natural Drugs Guiyang 550014 People's Republic of China
| | - Hai Ren
- State key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Guiyang 550014 People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences / Guizhou Provincial Engineering Research Center for Natural Drugs Guiyang 550014 People's Republic of China
| | - Weidong Pan
- State key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Guiyang 550014 People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences / Guizhou Provincial Engineering Research Center for Natural Drugs Guiyang 550014 People's Republic of China
- Guizhou University Huaxi Avenue South Guiyang 550025 People's Republic of China
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21
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Glinsky-Olivier N, Yang S, Retailleau P, Gandon V, Guinchard X. Enantioselective Gold-Catalyzed Pictet–Spengler Reaction. Org Lett 2019; 21:9446-9451. [DOI: 10.1021/acs.orglett.9b03656] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Nicolas Glinsky-Olivier
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 avenue de la Terrasse, Gif-sur-Yvette 91198, France
| | - Shengwen Yang
- Institut de Chimie Moléculaire et des Matériaux d’Orsay, CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, Orsay CEDEX 91405, France
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, IP Paris, route de Saclay, Palaiseau CEDEX 91128, France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 avenue de la Terrasse, Gif-sur-Yvette 91198, France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d’Orsay, CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, Orsay CEDEX 91405, France
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, IP Paris, route de Saclay, Palaiseau CEDEX 91128, France
| | - Xavier Guinchard
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 avenue de la Terrasse, Gif-sur-Yvette 91198, France
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22
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Yu YN, Qi WY, Wu CY, Xu MH. Rhodium-Catalyzed Enantioselective Addition of Arylboroxines to Isatin-Derived N-Boc Ketimines Using Chiral Phosphite–Olefin Ligands: Asymmetric Synthesis of 3-Aryl-3-amino-2-oxindoles. Org Lett 2019; 21:7493-7497. [DOI: 10.1021/acs.orglett.9b02787] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yue-Na Yu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, 1088 Xueyuan Boulevard, Shenzhen 518055, China
| | - Wei-Yi Qi
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Chun-Yan Wu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Ming-Hua Xu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, 1088 Xueyuan Boulevard, Shenzhen 518055, China
- 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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23
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Bhandari S, Sana S, Sridhar B, Shankaraiah N. Microwave‐Assisted One‐Pot [3+2] Cycloaddition of Azomethine Ylides and 3‐Alkenyl Oxindoles: A Facile Approach to Pyrrolidine‐Fused Bis‐Spirooxindoles. ChemistrySelect 2019. [DOI: 10.1002/slct.201802847] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sonal Bhandari
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER) Hyderabad500037 India
| | - Sravani Sana
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER) Hyderabad500037 India
| | - Balasubramanyam Sridhar
- Laboratoryof X-ray CrystallographyCSIR-Indian Institute of Chemical Technology Hyderabad500007 India
| | - Nagula Shankaraiah
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER) Hyderabad500037 India
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24
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25
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Schlegel M, Coburger P, Schneider C. A Novel Sc(OTf) 3 -Catalyzed (2+2+1)-Cycloannulation/Aza-Friedel-Crafts Alkylation Sequence toward Multicyclic 2-Pyrrolines. Chemistry 2018; 24:14207-14212. [PMID: 29939442 DOI: 10.1002/chem.201802478] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Indexed: 12/13/2022]
Abstract
The rapid assembly of molecular complexity continues to be at the forefront of novel reaction development. In the pursuit of that goal, we herein report a novel Sc(OTf)3 -catalyzed, one-pot multicomponent reaction that furnishes complex multicyclic 2-pyrrolines with excellent overall yields and perfect diastereocontrol. This process is based on our previously established (2+2+1)-cycloannulation of in situ generated 1-azaallyl cations, 1,3-dicarbonyls and primary amines. The newly formed and highly reactive aminal moiety is readily substituted with indoles and pyrroles both as external and internal π-nucleophiles to provide densely functionalized N-heterocycles with four new σ-bonds and two vicinal quaternary stereogenic centers. In addition, DFT calculations have been conducted to further characterize the intermediate 1-azaallyl cations.
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Affiliation(s)
- Marcel Schlegel
- Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, 04103, Leipzig, Germany
| | - Peter Coburger
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103, Leipzig, Germany
| | - Christoph Schneider
- Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, 04103, Leipzig, Germany
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26
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Gerry CJ, Schreiber SL. Chemical probes and drug leads from advances in synthetic planning and methodology. Nat Rev Drug Discov 2018; 17:333-352. [PMID: 29651105 PMCID: PMC6707071 DOI: 10.1038/nrd.2018.53] [Citation(s) in RCA: 150] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Screening of small-molecule libraries is a productive method for identifying both chemical probes of disease-related targets and potential starting points for drug discovery. In this article, we focus on strategies such as diversity-oriented synthesis that aim to explore novel areas of chemical space efficiently by populating small-molecule libraries with compounds containing structural features that are typically under-represented in commercially available screening collections. Drawing from more than a decade's worth of examples, we highlight how the design and synthesis of such libraries have been enabled by modern synthetic chemistry, and we illustrate the impact of the resultant chemical probes and drug leads in a wide range of diseases.
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Affiliation(s)
- Christopher J Gerry
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
- The Broad Institute of Harvard & MIT, Cambridge, MA, USA
| | - Stuart L Schreiber
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
- The Broad Institute of Harvard & MIT, Cambridge, MA, USA
- Howard Hughes Medical Institute, Cambridge, MA, USA
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27
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İşibol D, Karahan S, Tanyeli C. Asymmetric organocatalytic direct Mannich reaction of acetylacetone and isatin derived ketimines: Low catalyst loading in chiral cinchona-squaramides. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.12.081] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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28
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Chen HX, Zhang Y, Zhang Y, He X, Zhang ZW, Liang H, He W, Jiang X, Chen X, Qiu L. Synthesis of six-membered spirooxindolesviaa chiral Brønsted acid-catalyzed asymmetric intramolecular Friedel–Crafts reaction. RSC Adv 2018; 8:37035-37039. [PMID: 35557774 PMCID: PMC9089239 DOI: 10.1039/c8ra06710d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 10/17/2018] [Indexed: 01/16/2023] Open
Abstract
By means of the direct condensation of N-aminoethylpyrroles and isatins, followed by a chiral phosphoric acid-catalyzed asymmetric intramolecular Friedel-Crafts reaction, a new class of valuable chiral 3′,4′-dihydro-2′H-spiro[indoline-3,1′-pyrrolo[1,2-a]pyrazin]-2-ones bearing a quaternary carbon stereocenter were successfully synthesized in good to excellent yields and with moderate to good enantioselectivities under mild reaction conditions. A chiral phosphoric acid-catalyzed asymmetric intramolecular Friedel–Crafts reaction for the synthesis of 3′,4′-dihydro-2′H-spiro[indoline-3,1′-pyrrolo[1,2-a]pyrazin]-2-ones.![]()
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29
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Hu S, Zhang J, Jin Q. DMAP-catalyzed alkylation of isatin N,N′-cyclic azomethine imine 1,3-dipoles with Morita–Baylis–Hillman carbonates. NEW J CHEM 2018. [DOI: 10.1039/c8nj00234g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Metal-free C(sp3)–H alkylation of an isatin N,N′-cyclic azomethine imine 1,3-dipole.
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Affiliation(s)
- Shihe Hu
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine
- Nanjing University of Chinese Medicine
- Nanjing 210028
- China
- Laboratories of Translational Medicine
| | - Jian Zhang
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine
- Nanjing University of Chinese Medicine
- Nanjing 210028
- China
- Laboratories of Translational Medicine
| | - Qiaomei Jin
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine
- Nanjing University of Chinese Medicine
- Nanjing 210028
- China
- Laboratories of Translational Medicine
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30
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Zhong W, Qi L, Hou H, Ling F, Fang L, Luo W. Cinchona Alkaloid Thiourea Catalyzed Asymmetric Synthesis and Anticancer Activity Evaluation of Tetrahydro-β-spirooxindoles. HETEROCYCLES 2018. [DOI: 10.3987/com-18-13907] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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31
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Nakamura S, Furukawa T, Hatanaka T, Funahashi Y. Enantioselective aza-Friedel–Crafts reaction of cyclic ketimines with indoles using chiral imidazoline–phosphoric acid catalysts. Chem Commun (Camb) 2018; 54:3811-3814. [DOI: 10.1039/c8cc00594j] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A highly enantioselective aza-Friedel Crafts reaction of cyclic 4-aryl-3-oxo-1,2,5-thiadiazol-1,1-oxides as cyclic ketimines with indoles was developed.
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Affiliation(s)
- Shuichi Nakamura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
- Showa-ku
- Japan
- Frontier Research Institute for Material Science, Nagoya Institute of Technology
- Showa-ku
| | - Takashi Furukawa
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
- Showa-ku
- Japan
| | - Tsubasa Hatanaka
- Department of Chemistry, Graduate School of Science, Osaka University
- Toyonaka
- Japan
| | - Yasuhiro Funahashi
- Department of Chemistry, Graduate School of Science, Osaka University
- Toyonaka
- Japan
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32
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Yang MC, Peng C, Huang H, Yang L, He XH, Huang W, Cui HL, He G, Han B. Organocatalytic Asymmetric Synthesis of Spiro-oxindole Piperidine Derivatives That Reduce Cancer Cell Proliferation by Inhibiting MDM2–p53 Interaction. Org Lett 2017; 19:6752-6755. [PMID: 29210587 DOI: 10.1021/acs.orglett.7b03516] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ming-Cheng Yang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, Chongqing 402160, China
| | - Cheng Peng
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Hua Huang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Lei Yang
- State Key Laboratory of Biotherapy, West
China Hospital, Sichuan University, Chengdu 610041, China
| | - Xiang-Hong He
- State Key Laboratory of Biotherapy, West
China Hospital, Sichuan University, Chengdu 610041, China
| | - Wei Huang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, Chongqing University of Arts and Sciences, Chongqing 402160, China
| | - Gu He
- State Key Laboratory of Biotherapy, West
China Hospital, Sichuan University, Chengdu 610041, China
| | - Bo Han
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
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33
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Parmar D, Sugiono E, Raja S, Rueping M. Addition and Correction to Complete Field Guide to Asymmetric BINOL-Phosphate Derived Brønsted Acid and Metal Catalysis: History and Classification by Mode of Activation; Brønsted Acidity, Hydrogen Bonding, Ion Pairing, and Metal Phosphates. Chem Rev 2017; 117:10608-10620. [DOI: 10.1021/acs.chemrev.7b00197] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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Urmode TD, Dawange MA, Shinde VS, Kusurkar RS. Synthesis of spiroindolone scaffolds by Pictet-Spengler spirocyclisation using β-cyclodextrin-SO3H as a recyclable catalyst. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.05.089] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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35
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Aranzamendi E, Sotomayor N, Lete E. Phenolic Activation in Chiral Brønsted Acid-Catalyzed Intramolecular α-Amidoalkylation Reactions for the Synthesis of Fused Isoquinolines. ACS OMEGA 2017; 2:2706-2718. [PMID: 31457610 PMCID: PMC6641169 DOI: 10.1021/acsomega.7b00170] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 06/05/2017] [Indexed: 05/07/2023]
Abstract
An organolithium addition-intramolecular α-amidoalkylation sequence on N-phenethylimides has been developed for the synthesis of fused tetrahydroisoquinoline systems using 1,1'-bi-2-naphthol (binol)-derived Brønsted acids. This transformation is the first in which activated benzene derivatives are used as internal nucleophiles, instead of electron-rich heteroaromatics, generating a quaternary stereocenter. Phenolic substitution on the aromatic ring of the phenethylamino moiety and the use of binol-derived N-triflylphosphoramides as catalysts are determinants to achieve reasonable levels of enantioselection, that is, up to 75% enantiomeric excess, in the α-amidoalkylation step. The procedure is complementary to the intermolecular α-amidoalkylation process, as opposite enantiomers are formed, and to the Pictet-Spengler cyclization, which allows the formation of tertiary stereocenters.
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36
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Correia JTM, List B, Coelho F. Catalytic Asymmetric Conjugate Addition of Indolizines to α,β-Unsaturated Ketones. Angew Chem Int Ed Engl 2017; 56:7967-7970. [PMID: 28570759 DOI: 10.1002/anie.201700513] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 03/31/2017] [Indexed: 01/29/2023]
Abstract
A catalytic enantioselective conjugate addition of indolizines to enones is described. The chiral phosphoric acid (S)-TRIP activates α,β-unsaturated ketones, thereby promoting an enantioface-differentiating attack by indolizines. Using this reaction, several alkylated indolizines were synthesized in good yields and with enantiomeric ratios of up to 98:2.
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Affiliation(s)
- José Tiago Menezes Correia
- Department of Organic Chemistry, University of Campinas-Institute of Chemistry, Rua Josué de Castro, s/n-Cidade Universitária Zeferino Vaz, P.O. Box 6154, 13083, Campinas, SP, Brazil
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
| | - Fernando Coelho
- Department of Organic Chemistry, University of Campinas-Institute of Chemistry, Rua Josué de Castro, s/n-Cidade Universitária Zeferino Vaz, P.O. Box 6154, 13083, Campinas, SP, Brazil
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Correia JTM, List B, Coelho F. Katalytische asymmetrische konjugierte Addition von Indolizinen an α,β-ungesättigte Ketone. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700513] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- José Tiago Menezes Correia
- Department of Organic Chemistry; University of Campinas - Institute of Chemistry, Rua Josué de Castro, s/n - Cidade Universitária Zeferino Vaz; P.O. Box 6154- 13083- Campinas SP Brasilien
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Fernando Coelho
- Department of Organic Chemistry; University of Campinas - Institute of Chemistry, Rua Josué de Castro, s/n - Cidade Universitária Zeferino Vaz; P.O. Box 6154- 13083- Campinas SP Brasilien
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38
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Rao RN, Maiti B, Chanda K. Application of Pictet-Spengler Reaction to Indole-Based Alkaloids Containing Tetrahydro-β-carboline Scaffold in Combinatorial Chemistry. ACS COMBINATORIAL SCIENCE 2017; 19:199-228. [PMID: 28276678 DOI: 10.1021/acscombsci.6b00184] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Indole-based alkaloids are well-known in the literature for their diverse biological properties. Polysubstituted optically active tetrahydro-β-carboline derivatives functionalized on C-1 position are the common structural motif in most of the indole-based alkaloids, as well as highly marketed drugs. The stereoselective Pictet-Spengler reaction is one of the currently most important synthetic techniques used for the preparation of these privileged tetrahydro-β-carboline scaffolds. To date, there are numerous research reports that have been published on the synthesis of the tetrahydro-β-carboline scaffold both on solid phase, as well as in solution phase. Moreover rapid growth has been observed for the enantioselective synthesis of tetrahydro-β-carboline scaffold using chiral organocatalysts. In this Review, efforts have been taken to shed light on the latest information available on different strategies to synthesize tetrahydro-β-carboline both on solid phase and in solution phase during the last 20 years. Furthermore, we believe that the present synthetic methodologies covered in this Review will help to improve the status of this privileged tetrahydro-β-carboline scaffold in its use for drug discovery.
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Affiliation(s)
- R. Nishanth Rao
- Department of Chemistry,
School of Advanced Sciences, VIT University, Vellore-632014, India
| | - Barnali Maiti
- Department of Chemistry,
School of Advanced Sciences, VIT University, Vellore-632014, India
| | - Kaushik Chanda
- Department of Chemistry,
School of Advanced Sciences, VIT University, Vellore-632014, India
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39
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Dawange MA, Urmode TD, Khan A, Kusurkar RS. Acid Catalyzed Synthesis of Spiroindolone Scaffolds by Iso‐Pictet‐Spengler Spirocyclisation and Evaluation of their Antibacterial Activity. ChemistrySelect 2017. [DOI: 10.1002/slct.201700215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Monali A. Dawange
- Department of ChemistrySavitribai Phule Pune University, Ganeshkhind Pune- 411007 India
| | - Tukaram D. Urmode
- Department of ChemistrySavitribai Phule Pune University, Ganeshkhind Pune- 411007 India
| | - Ayesha Khan
- Department of ChemistrySavitribai Phule Pune University, Ganeshkhind Pune- 411007 India
| | - Radhika S. Kusurkar
- Department of ChemistrySavitribai Phule Pune University, Ganeshkhind Pune- 411007 India
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40
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Choudhary MK, Menapara T, Tak R, Kureshy RI, Khan NUH. Asymmetric Synthesis of 3-Amino Oxindoles Using Isatin-DerivedN-Boc Ketimines with Activated Nitroolefin Catalyzed by Organocatalysts. ChemistrySelect 2017. [DOI: 10.1002/slct.201700032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Manoj K. Choudhary
- Division of Inorganic Material and Catalysis; Central Salt and Marine Chemical Research Institute (CSMCRI); Bhavngar- 364002, Gujrat India
- Academy of Scientific and Innovative Research (AcSIR); Central Salt and Marine Chemical Research Institute (CSMCRI); Council of Scientific and Industial Research (CSIR); G.B. Marg Bhavnagar- 364002, Gujrat India
| | - Tusharkumar Menapara
- Division of Inorganic Material and Catalysis; Central Salt and Marine Chemical Research Institute (CSMCRI); Bhavngar- 364002, Gujrat India
- Academy of Scientific and Innovative Research (AcSIR); Central Salt and Marine Chemical Research Institute (CSMCRI); Council of Scientific and Industial Research (CSIR); G.B. Marg Bhavnagar- 364002, Gujrat India
| | - Rajkumar Tak
- Division of Inorganic Material and Catalysis; Central Salt and Marine Chemical Research Institute (CSMCRI); Bhavngar- 364002, Gujrat India
- Academy of Scientific and Innovative Research (AcSIR); Central Salt and Marine Chemical Research Institute (CSMCRI); Council of Scientific and Industial Research (CSIR); G.B. Marg Bhavnagar- 364002, Gujrat India
| | - Rukhsana I. Kureshy
- Division of Inorganic Material and Catalysis; Central Salt and Marine Chemical Research Institute (CSMCRI); Bhavngar- 364002, Gujrat India
- Academy of Scientific and Innovative Research (AcSIR); Central Salt and Marine Chemical Research Institute (CSMCRI); Council of Scientific and Industial Research (CSIR); G.B. Marg Bhavnagar- 364002, Gujrat India
| | - Noor-ul H. Khan
- Division of Inorganic Material and Catalysis; Central Salt and Marine Chemical Research Institute (CSMCRI); Bhavngar- 364002, Gujrat India
- Academy of Scientific and Innovative Research (AcSIR); Central Salt and Marine Chemical Research Institute (CSMCRI); Council of Scientific and Industial Research (CSIR); G.B. Marg Bhavnagar- 364002, Gujrat India
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41
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Cheng C, Lu X, Ge L, Chen J, Cao W, Wu X, Zhao G. Effective asymmetric vinylogous Mannich reaction of isatin imines with α,α-dicyanoolefins in the presence of a simple chiral amide phosphonium bifunctional phase transfer catalyst. Org Chem Front 2017. [DOI: 10.1039/c6qo00546b] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A Mannich reaction between N-Boc isatin imine and α,α-dicyanoolefin as well as subsequent oxidative cleavage of the malonic nitrile moiety were described.
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Affiliation(s)
- Cang Cheng
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Xuehe Lu
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Luo Ge
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Jie Chen
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Weiguo Cao
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Xiaoyu Wu
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
- Key Laboratory of Synthetic Chemistry of Natural Substances
| | - Gang Zhao
- Key Laboratory of Synthetic Chemistry of Natural Substances
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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42
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Wei Q, Zhu G, Zhang H, Qu J, Wang B. 1,3-Dipolar Cycloaddition of Azomethine Ylides Involving 3-Aminooxindoles: Versatile Construction of Dispiro[pyrrolidine-2,3′-oxindole] Scaffolds. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601127] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Qian Wei
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; 116024 Dalian P. R. China
| | - Guodong Zhu
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; 116024 Dalian P. R. China
| | - Hailei Zhang
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; 116024 Dalian P. R. China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; 116024 Dalian P. R. China
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals; School of Pharmaceutical Science and Technology; Dalian University of Technology; 116024 Dalian P. R. China
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43
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Abstract
A gram-scale enantioselective total synthesis of (+)-peganumine A was accomplished in 7 steps from commercially available 6-methoxytryptamine. Key steps included (a) a Liebeskind-Srogl cross-coupling; (b) a one-pot construction of the tetracyclic skeleton from an ω-isocyano-γ-oxo-aldehyde via a sequence of an unprecedented C-C bond forming lactamization and a transannular condensation; (c) a one-pot organocatalytic process merging two achiral building blocks into an octacyclic structure via a sequence of enantioselective Pictet-Spengler reaction followed by a transannular cyclization. This last reaction created two spirocycles and a 2,7-diazabicyclo[2.2.1]heptan-3-one unit with excellent control of both the absolute and relative stereochemistry of the two newly created quaternary stereocenters.
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Affiliation(s)
- Cyril Piemontesi
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne , EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne , EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne , EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland
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44
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45
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Nakamura S, Matsuda N, Ohara M. Organocatalytic Enantioselective Aza-Friedel-Crafts Reaction of Cyclic Ketimines with Pyrroles using Imidazolinephosphoric Acid Catalysts. Chemistry 2016; 22:9478-82. [DOI: 10.1002/chem.201601573] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Shuichi Nakamura
- Frontier Research Institute for Material Science; Nagoya Institute of Technology, Gokiso, Showa-ku; Nagoya 466-8555 Japan
| | - Nazumi Matsuda
- Frontier Research Institute for Material Science; Nagoya Institute of Technology, Gokiso, Showa-ku; Nagoya 466-8555 Japan
| | - Mutsuyo Ohara
- Frontier Research Institute for Material Science; Nagoya Institute of Technology, Gokiso, Showa-ku; Nagoya 466-8555 Japan
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46
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One-pot synthesis of spirofluorenyl- and spiroindeno[1,2- b ]indolyl oxindoles via sequential inter- and intramolecular Friedel–Crafts reactions. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.11.080] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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47
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Holmquist M, Blay G, Muñoz MC, Pedro JR. Aza-Henry Reaction of Isatin Ketimines with Methyl 4-Nitrobutyrate en Route to Spiro[piperidine-3,3′-oxindoles]. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500716] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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48
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Zheng H, Liu X, Xu C, Xia Y, Lin L, Feng X. Regio- and Enantioselective Aza-Diels-Alder Reactions of 3-Vinylindoles: A Concise Synthesis of the Antimalarial Spiroindolone NITD609. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505717] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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49
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Zheng H, Liu X, Xu C, Xia Y, Lin L, Feng X. Regio- and Enantioselective Aza-Diels-Alder Reactions of 3-Vinylindoles: A Concise Synthesis of the Antimalarial Spiroindolone NITD609. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/anie.201505717] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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50
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Musin LI, Bogdanov AV, Mironov VF. Isatin derivatives in reactions with phosphorus(III-V) compounds. Chem Heterocycl Compd (N Y) 2015; 51:421-439. [PMID: 32214418 PMCID: PMC7088249 DOI: 10.1007/s10593-015-1717-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 04/21/2015] [Indexed: 10/27/2022]
Abstract
In this review we generalize and analyze information about reactions between isatin and three-, four-, and five-coordinate phosphorus compounds, published between 1966 and 2014.
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Affiliation(s)
- Lenar I. Musin
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzova St., Kazan, 420088 Russia
| | - Andrei V. Bogdanov
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzova St., Kazan, 420088 Russia
| | - Vladimir F. Mironov
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzova St., Kazan, 420088 Russia
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