1
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Menke JM, Trapp O. Pronounced Self-Induced Diastereomeric Anisochronism in Anisidine Amino Acid Diamides. Chemistry 2024; 30:e202400623. [PMID: 38656599 DOI: 10.1002/chem.202400623] [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: 02/15/2024] [Revised: 04/23/2024] [Accepted: 04/23/2024] [Indexed: 04/26/2024]
Abstract
The emergent properties resulting from selective supramolecular interactions are of significant importance for materials and chemical systems. For the directed use of such properties, a fundamental understanding of the interaction mechanism and the resulting mode of function is necessary for a tailored design. The self-induced diastereomeric anisochronism effect (SIDA), which occurs in the intermolecular interaction of chiral molecules, generates unique properties such as chiral self-recognition and nonlinear effects. Here we show that anisidine amino acid diamides lead to extraordinary signal splitting in NMR spectra through supramolecular interaction and homochiral self-recognition. By systematic experiments we have investigated the underlying SIDA effect, explored its limits and finally successfully utilized it in the determination of enantiomeric ratios by NMR spectroscopy of chiral 'SIDA-inactive' compounds such as thalidomide.
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Affiliation(s)
- Jan-Michael Menke
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany
| | - Oliver Trapp
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany
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2
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Mari G, De Crescentini L, Favi G, Mantellini F, Olivieri D, Santeusanio S. Challenge N- versus O-six-membered annulation: FeCl 3-catalyzed synthesis of heterocyclic N, O-aminals. Beilstein J Org Chem 2024; 20:1412-1420. [PMID: 38952961 PMCID: PMC11216082 DOI: 10.3762/bjoc.20.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 06/14/2024] [Indexed: 07/03/2024] Open
Abstract
A new class of heterocyclic N,O-aminal and hemiaminal scaffolds was successfully obtained by means of a three-component reaction (3-CR) of 1,2-diaza-1,3-dienes (DDs), α-aminoacetals and iso(thio)cyanates. These stable imine surrogates are generated from key-substituted (thio)hydantoin intermediates through selective FeCl3-catalyzed intramolecular N-annulation.
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Affiliation(s)
- Giacomo Mari
- Department of Biomolecular Sciences, Section of Chemistry and Pharmaceutical Technologies, University "Carlo Bo" of Urbino, Via Ca' le Suore 2-4, 61029, Urbino (PU), Italy
| | - Lucia De Crescentini
- Department of Biomolecular Sciences, Section of Chemistry and Pharmaceutical Technologies, University "Carlo Bo" of Urbino, Via Ca' le Suore 2-4, 61029, Urbino (PU), Italy
| | - Gianfranco Favi
- Department of Biomolecular Sciences, Section of Chemistry and Pharmaceutical Technologies, University "Carlo Bo" of Urbino, Via Ca' le Suore 2-4, 61029, Urbino (PU), Italy
| | - Fabio Mantellini
- Department of Biomolecular Sciences, Section of Chemistry and Pharmaceutical Technologies, University "Carlo Bo" of Urbino, Via Ca' le Suore 2-4, 61029, Urbino (PU), Italy
| | - Diego Olivieri
- Department of Biomolecular Sciences, Section of Chemistry and Pharmaceutical Technologies, University "Carlo Bo" of Urbino, Via Ca' le Suore 2-4, 61029, Urbino (PU), Italy
| | - Stefania Santeusanio
- Department of Biomolecular Sciences, Section of Chemistry and Pharmaceutical Technologies, University "Carlo Bo" of Urbino, Via Ca' le Suore 2-4, 61029, Urbino (PU), Italy
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3
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Ma R, Gu Y, Wang YE, Fei R, Xiong D, Mao J. One-Pot Synthesis of Indolin-3-ones Mediated by LiN(SiMe 3) 2/CsF. Org Lett 2024; 26:5082-5086. [PMID: 38848449 DOI: 10.1021/acs.orglett.4c01265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2024]
Abstract
Indolin-3-ones are essential heterocycles with wide-ranging biological activities and medicinal values, and therefore, efficient approaches to their synthesis remain in demand. Herein, a novel and operationally simple method to generate indolin-3-ones is reported by using a tandem reaction of N-methylbenzylamines and methyl 2-fluorobenzoates mediated by the LiN(SiMe3)2 and CsF system (34 examples, 30-85% yields). The synthesis of C2-quaternary indolin-3-one further demonstrated the potential practicability of these tandem reactions.
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Affiliation(s)
- Ruyuan Ma
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Yuanyun Gu
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Yan-En Wang
- College of Science, Hebei Agricultural University, Baoding 071000, P. R. China
| | - Rongbi Fei
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Dan Xiong
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Jianyou Mao
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
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4
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Ghosh M, Sahu S, Saha S, Maji MS. Construction of C2-indolyl-quaternary centers by branch-selective allylation: enabling concise total synthesis of the (±)-mersicarpine alkaloid. Chem Sci 2024; 15:1789-1795. [PMID: 38303951 PMCID: PMC10829033 DOI: 10.1039/d3sc04732f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 12/16/2023] [Indexed: 02/03/2024] Open
Abstract
Herein we report a branch-selective allylation strategy for accessing C2-indolyl-all-carbon quaternary centers using allylboronic acids. This approach boasts broad functional group tolerance, scalability, and relies on easily accessible allyl alcohol precursors. Importantly, the C3-position of the indole remains free, offering a handle for further synthetic refinement. Mechanistic pathways, corroborated by density functional theory (DFT), suggest the involvement of an indolenine intermediate and a Zimmerman-Traxler-like transition state during allylboration. Demonstrating its efficacy, the method was applied to the total synthesis of the (±)-mersicarpine alkaloid and enabled formal synthesis of additional alkaloids, such as (±)-scholarisine G, (±)-melodinine E, and (±)-leuconoxine.
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Affiliation(s)
- Minakshi Ghosh
- Department of Chemistry, Indian Institute of Technology Kharagpur Kharagpur 721302 WB India
| | - Samrat Sahu
- Department of Chemistry, Indian Institute of Technology Kharagpur Kharagpur 721302 WB India
| | - Shuvendu Saha
- Department of Chemistry, Indian Institute of Technology Kharagpur Kharagpur 721302 WB India
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur Kharagpur 721302 WB India
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5
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Yang C, Shi W, Tian J, Guo L, Zhao Y, Xia W. Visible-light-induced radical cascade cyclization: a catalyst-free synthetic approach to trifluoromethylated heterocycles. Beilstein J Org Chem 2024; 20:118-124. [PMID: 38264451 PMCID: PMC10804559 DOI: 10.3762/bjoc.20.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/10/2024] [Indexed: 01/25/2024] Open
Abstract
A visible-light-promoted research protocol for constructing dihydropyrido[1,2-a]indolone skeletons is herein described proceeding through a cascade cyclization mediated by trifluoromethyl radicals. This method allows the efficient synthesis of various indole derivatives without the need of photocatalysts or transition-metal catalysts. Mechanism experiments indicate that the process involves a radical chain process initiated by the homolysis of Umemoto's reagent. This straightforward method enables a rapid access to heterocycles containing a trifluoromethyl group.
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Affiliation(s)
- Chuan Yang
- College of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Wei Shi
- College of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Jian Tian
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Lin Guo
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Yating Zhao
- College of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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6
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Fan Y, Guo J, Bao Y, Yuan Y, Hu M, Li X, Yan H, Cai Y, Xia Q. KI-Catalyzed C(sp 3)-H Amination and Acyloxylation of Indolin-3-ones Using Air as the Oxidant. Org Lett 2023; 25:8162-8167. [PMID: 37931090 DOI: 10.1021/acs.orglett.3c03480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
We have developed an efficient and green strategy for the synthesis of C2-amino indolin-3-ones and C2-acyloxy indolin-3-ones via KI-catalyzed C(sp3)-H amination and acyloxylation of indolin-3-ones using air as the oxidant. The reaction provides straightforward access to 2-substituted indolin-3-ones by the direct functionalization of indolin-3-ones at the C2 position under mild conditions. Moreover, the conditions enable direct functionalization of a range of complex pharmaceuticals, providing attractive products for medicinal chemistry programs.
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Affiliation(s)
- Yueyue Fan
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou Zhejiang 325035, P. R. China
| | - Jingwen Guo
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou Zhejiang 325035, P. R. China
| | - Yuting Bao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou Zhejiang 325035, P. R. China
| | - Yuxin Yuan
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou Zhejiang 325035, P. R. China
| | - Meng Hu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou Zhejiang 325035, P. R. China
| | - Xiaohui Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou Zhejiang 325035, P. R. China
| | - Hang Yan
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou Zhejiang 325035, P. R. China
| | - Yuepiao Cai
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou Zhejiang 325035, P. R. China
| | - Qinqin Xia
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou Zhejiang 325035, P. R. China
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7
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Cheng WF, Ma S, Lai YT, Cheung YT, Akkarasereenon K, Zhou Y, Tong R. BiBr 3 -Mediated Intramolecular Aza-Prins Cyclization of Aza-Achmatowicz Rearrangement Products: Asymmetric Total Synthesis of Suaveoline and Sarpagine Alkaloids. Angew Chem Int Ed Engl 2023; 62:e202311671. [PMID: 37724977 DOI: 10.1002/anie.202311671] [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: 08/10/2023] [Revised: 09/15/2023] [Accepted: 09/19/2023] [Indexed: 09/21/2023]
Abstract
An intramolecular aza-Prins cyclization of aza-Achmatowicz rearrangement products was developed in which bismuth tribromide (BiBr3 ) plays a dual role as an efficient Lewis acid and source of the bromide nucleophile. This approach enables the facile construction of highly functionalized 9-azabicyclo[3.3.1]nonanes (9-ABNs), which are valuable synthetic building blocks and a powerful platform for the synthesis of a variety of alkaloid natural products and drug molecules. Suitable substrates for the aza-Prins cyclization include 1,1-disubstituted alkenes, 1,2-disubstituted alkenes, alkynes, and allenes, with good to excellent yields observed. Finally, we showcase the application of this new approach to the enantioselective total synthesis of six indole alkaloids: (-)-suaveoline (1), (-)-norsuaveoline (2), (-)-macrophylline (3), (+)-normacusine B (4), (+)-Na -methyl-16-epipericyclivine (5) and (+)-affinisine (6) in a total of 9-14 steps. This study significantly expands the synthetic utility of the aza-Achmatowicz rearrangement, and the strategy (aza-Achmatowicz/aza-Prins) is expected to be applicable to the total synthesis of other members of the big family of macroline and sarpagine indole alkaloids.
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Affiliation(s)
- Wai Fung Cheng
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong, China
| | - Shiqiang Ma
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong, China
| | - Yin Tung Lai
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong, China
| | - Yuen Tsz Cheung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong, China
| | - Kornkamon Akkarasereenon
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong, China
| | - Yiqin Zhou
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong, China
| | - Rongbiao Tong
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong, China
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8
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Fernandes RA. Deciphering the quest in the divergent total synthesis of natural products. Chem Commun (Camb) 2023; 59:12205-12230. [PMID: 37746673 DOI: 10.1039/d3cc03564f] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
The divergent synthesis of natural products is rapidly developing towards achieving the goal of efficiency and economy in total synthesis. However, presently, the sustainable development of the synthesis of natural products does not permit the linear synthesis of a single target. In this case, divergent total synthesis is based on the identification of an advanced intermediate with structural features that can be mapped in more than two molecules. However, the identification of this intermediate and its scalable synthesis in enantiopure form are challenging. Herein, we present the details of the ingenious efforts by researchers in the last six years toward the divergent synthesis of two to as many as eight natural products initially via a single route, and then diverging from a common intermediate and further branching out toward several natural products. The planning and strategies adopted can serve as guidelines for the future development of efficient divergent routes aimed at achieving higher efficiency toward multiple targets, causing divergent synthesis to become an accepted common practice.
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Affiliation(s)
- Rodney A Fernandes
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, Maharashtra, India.
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9
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Aiello F, Uccello Barretta G, Balzano F, Spiaggia F. The Phenomenon of Self-Induced Diastereomeric Anisochrony and Its Implications in NMR Spectroscopy. Molecules 2023; 28:6854. [PMID: 37836697 PMCID: PMC10574224 DOI: 10.3390/molecules28196854] [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: 09/01/2023] [Revised: 09/21/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
Nuclear magnetic resonance (NMR) spectroscopy is an analytical technique largely applied in the analysis of discrimination processes involving enantiomeric substrates and chiral agents, which can interact with the analyte either via covalent bonding or via formation of diastereomeric solvates. However, enantiodiscrimination has been observed, in some cases, even in the absence of any additional chiral selector. The reasons behind this phenomenon must be found in the capability of some chiral substrates to interact with themselves by forming diastereomeric solvates in solution that can generate nonequivalences in the NMR spectra of enantiomerically enriched mixtures. As a result, differentiation of enantiomers is observed, thus allowing the quantification of the enantiomeric composition of the mixture under investigation. The tendency of certain substrates to self-aggregate and to generate diastereomeric adducts in solution can be defined as Self-Induced Diastereomeric Anisochrony (SIDA), but other acronyms have been used to refer to this phenomenon. In the present work, an overview of SIDA processes investigated via NMR spectroscopy will be provided, with a particular emphasis on the nature of the substrates involved, on the interaction mechanisms at the basis of the phenomenon, and on theoretical treatments proposed in the literature to explain them.
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Affiliation(s)
- Federica Aiello
- National Research Council, Institute for Chemical and Physical Processes (CNR-IPCF), Via G. Moruzzi 1, 56124 Pisa, Italy
| | - Gloria Uccello Barretta
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (F.B.); (F.S.)
| | - Federica Balzano
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (F.B.); (F.S.)
| | - Fabio Spiaggia
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (F.B.); (F.S.)
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10
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Yang B, Li G, Wang Q, Zhu J. Enantioselective Total Synthesis of (+)-Stephadiamine. J Am Chem Soc 2023; 145:5001-5006. [PMID: 36848312 DOI: 10.1021/jacs.3c00884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
An asymmetric synthesis of (+)-stephadiamine has been accomplished featuring (a) an enantioselective dearomatizative Michael addition to generate a quaternary stereocenter; (b) a domino sequence involving reductive generation of nitrone from γ-nitro ketone followed by a highly regio- and diastereo-selective intramolecular [3 + 2] cycloaddition to construct the aza[4,3,3]propellane core with concurrent generation of two quaternary stereocenters and two functional groups ready for subsequent transformations; (c) the Curtius rearrangement of the sensitive α,α-disubstituted malonic acid mono ester for the installation of α,α-disubstituted amino ester moiety; (d) a benzylic C-H oxidation under photoredox catalytic conditions; and (e) a highly diastereoselective ketone reduction affording δ-hydroxyester preorganized for lactonization.
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Affiliation(s)
- Baochao Yang
- Laboratory of Synthesis and Natural Products (LSPN), Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland
| | - Guang Li
- Laboratory of Synthesis and Natural Products (LSPN), Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland.,State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of 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, BCH5304, CH-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, BCH5304, CH-1015 Lausanne, Switzerland
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11
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Hornink MM, Rodrigues BG, Santos CS, Andrade LH. Continuous one-pot synthesis of new spiro-fused indoles from biobased building blocks using carbamoylation and imidation reactions under ultrasonic irradiation. J Flow Chem 2023. [DOI: 10.1007/s41981-023-00261-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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12
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Dašková V, Padín D, Feringa BL. Turning Enantiomeric Relationships into Diastereomeric Ones: Self-Resolving α-Ureidophosphonates and Their Organocatalytic Enantioselective Synthesis. J Am Chem Soc 2022; 144:23603-23613. [PMID: 36516975 PMCID: PMC9801384 DOI: 10.1021/jacs.2c10911] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Controlling chiral recognition and chiral information transfer has major implications in areas ranging from drug design and asymmetric catalysis to supra- and macromolecular chemistry. Especially intriguing are phenomena associated with chiral self-recognition. The design of systems that show self-induced recognition of enantiomers, i.e., involving homochiral versus heterochiral dimers, is particularly challenging. Here, we report the chiral self-recognition of α-ureidophosphonates and its application as both a powerful analytical tool for enantiomeric ratio determination by NMR and as a convenient way to increase their enantiomeric purity by simple achiral column chromatography or fractional precipitation. A combination of NMR, X-ray, and DFT studies indicates that the formation of homo- and heterochiral dimers involving self-complementary intermolecular hydrogen bonds is responsible for their self-resolving properties. It is also shown that these often unnoticed chiral recognition phenomena can facilitate the stereochemical analysis during the development of new asymmetric transformations. As a proof of concept, the enantioselective organocatalytic hydrophosphonylation of alkylidene ureas toward self-resolving α-ureidophosphonates is presented, which also led us to the discovery of the largest family of self-resolving compounds reported to date.
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13
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Cain D, Anderson NA, Cordes DB, Slawin AMZ, Watson AJB. Total Synthesis of (±)-Aspidospermidine, (±)-Aspidofractinine, (±)-Limaspermidine, and (±)-Vincadifformine via a Cascade and Common Intermediate Strategy. J Org Chem 2022; 87:15559-15563. [PMID: 36259765 PMCID: PMC9680024 DOI: 10.1021/acs.joc.2c02099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A concise strategy for the total synthesis of several Aspidosperma alkaloids is reported. A Suzuki-Miyaura cross-coupling provides access to a 2-vinyl indole that undergoes a Diels-Alder cascade reaction with butyn-2-one to deliver a pyrroloindoline intermediate. This undergoes cascade amidation, reduction, skeletal rearrangement, and intramolecular Michael addition to provide a common intermediate containing the full framework of the Aspidosperma alkaloids. The utility of this intermediate is shown in the synthesis of four different natural products.
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Affiliation(s)
- David
L. Cain
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, Fife, St AndrewsKY16 9ST, U.K.
| | - Niall A. Anderson
- GlaxoSmithKline, Medicines Research Centre, Gunnels Wood Road, StevenageSG1 2NY, U.K.
| | - David B. Cordes
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, Fife, St AndrewsKY16 9ST, U.K.
| | - Alexandra M. Z. Slawin
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, Fife, St AndrewsKY16 9ST, U.K.
| | - Allan J. B. Watson
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, Fife, St AndrewsKY16 9ST, U.K.,
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14
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Horst B, Verdoorn DS, Hennig S, van der Heijden G, Ruijter E. Enantioselective Total Synthesis of (-)-Limaspermidine and (-)-Kopsinine by a Nitroaryl Transfer Cascade Strategy. Angew Chem Int Ed Engl 2022; 61:e202210592. [PMID: 36004723 PMCID: PMC9826323 DOI: 10.1002/anie.202210592] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Indexed: 01/11/2023]
Abstract
We report an intramolecular conjugate addition/Truce-Smiles/E1cb cascade of 2-nitrobenzenesulfonamide-functionalized cyclohexenones as a new entry to the core scaffold of monoterpene indole alkaloids. The method was applied to the asymmetric total synthesis of (-)-limaspermidine, (-)-kopsinilam, and (-)-kopsinine, as well as the framework of the kopsifoline alkaloids, thus highlighting its complementarity to existing approaches involving the use of indole-based starting materials or the interrupted Fischer indole synthesis. Furthermore, we show that the cascade tolerates various substituents on the nitroarene, opening the way to other natural products as well as non-natural analogues.
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Affiliation(s)
- Brendan Horst
- Department of Chemistry and Pharmaceutical SciencesAmsterdam Institute of Molecular and Life Sciences (AIMMS)De Boelelaan 11081081 HZAmsterdamThe Netherlands
| | - Daniël S. Verdoorn
- Department of Chemistry and Pharmaceutical SciencesAmsterdam Institute of Molecular and Life Sciences (AIMMS)De Boelelaan 11081081 HZAmsterdamThe Netherlands
| | - Sven Hennig
- Department of Chemistry and Pharmaceutical SciencesAmsterdam Institute of Molecular and Life Sciences (AIMMS)De Boelelaan 11081081 HZAmsterdamThe Netherlands
| | - Gydo van der Heijden
- Department of Chemistry and Pharmaceutical SciencesAmsterdam Institute of Molecular and Life Sciences (AIMMS)De Boelelaan 11081081 HZAmsterdamThe Netherlands
| | - Eelco Ruijter
- Department of Chemistry and Pharmaceutical SciencesAmsterdam Institute of Molecular and Life Sciences (AIMMS)De Boelelaan 11081081 HZAmsterdamThe Netherlands
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15
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Horst B, Verdoorn DS, Hennig S, van der Heijden G, Ruijter E. Enantioselective Total Synthesis of (–)‐Limaspermidine and (–)‐Kopsinine by a Nitroaryl Transfer Cascade Strategy. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210592] [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)
- Brendan Horst
- Vrije Universiteit Amsterdam Chemistry & Pharmaceutical Sciences NETHERLANDS
| | - Daniël S. Verdoorn
- Vrije Universiteit Amsterdam Chemistry & Pharmaceutical Sciences NETHERLANDS
| | - Sven Hennig
- Vrije Universiteit Amsterdam Chemistry & Pharmaceutical Sciences NETHERLANDS
| | | | - Eelco Ruijter
- Vrije Universiteit Amsterdam Chemistry & Pharmaceutical Sciences De Boelelaan 11081081 HZNetherlands 1081 HZ Amsterdam NETHERLANDS
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16
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Xiao J, Zhou G, Ji C. Syntheses of Mersicarpine, a Monoterpenoid Indole Alkaloid with an Atypical Tetracyclic Structure. ChemistrySelect 2022. [DOI: 10.1002/slct.202201373] [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]
Affiliation(s)
- Jie Xiao
- School of Chemistry and Environmental Sciences Shangrao Normal University No. 401 Zhimin Road Shangrao Jiangxi 334001 People's Republic of China
| | - Guang‐Hua Zhou
- School of Chemistry and Food Science Nanchang Normal University No. 889 Ruixiang Road Nanchang Jiangxi 330032 People's Republic of China
| | - Cong‐Bin Ji
- School of Chemistry and Environmental Sciences Shangrao Normal University No. 401 Zhimin Road Shangrao Jiangxi 334001 People's Republic of China
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17
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Sun C, Tian W, Lin Z, Qu X. Biosynthesis of pyrroloindoline-containing natural products. Nat Prod Rep 2022; 39:1721-1765. [PMID: 35762180 DOI: 10.1039/d2np00030j] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Covering: up to 2022Pyrroloindoline is a privileged tricyclic indoline motif widely present in many biologically active and medicinally valuable natural products. Thus, understanding the biosynthesis of this molecule is critical for developing convenient synthetic routes, which is highly challenging for its chemical synthesis due to the presence of rich chiral centers in this molecule, especially the fully substituted chiral carbon center at the C3-position of its rigid tricyclic structure. In recent years, progress has been made in elucidating the biosynthetic pathways and enzymatic mechanisms of pyrroloindoline-containing natural products (PiNPs). This article reviews the main advances in the past few decades based on the different substitutions on the C3 position of PiNPs, especially the various key enzymatic mechanisms involved in the biosynthesis of different types of PiNPs.
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Affiliation(s)
- Chenghai Sun
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Wenya Tian
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Zhi Lin
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China. .,Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xudong Qu
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China. .,Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 200240, China
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18
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Sirindil F, Weibel JM, Pale P, Blanc A. Rhazinilam-leuconolam family of natural products: a half century of total synthesis. Nat Prod Rep 2022; 39:1574-1590. [PMID: 35699109 DOI: 10.1039/d2np00026a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covering: 1972 to 2021The rhazinilam family of natural products exhibits a main structure with a stereogenic quaternary carbon and a tetrahydroindolizine core imbedded within a 9-membered macrocycle, imposing axial chirality. This unique architecture combined with their taxol-like antimitotic activities have attracted various attention, especially from synthetic chemists, notably in the past decade. The present review describes the known total and formal syntheses of the members of the rhazinilam family (rhazinilam, rhazinal, leuconolam and kopsiyunnanines), according to the strategy developed.
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Affiliation(s)
- Fatih Sirindil
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 Rue Blaise Pascal, 67070 Strasbourg, France.
| | - Jean-Marc Weibel
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 Rue Blaise Pascal, 67070 Strasbourg, France.
| | - Patrick Pale
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 Rue Blaise Pascal, 67070 Strasbourg, France.
| | - Aurélien Blanc
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 Rue Blaise Pascal, 67070 Strasbourg, France.
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19
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Xing SN, Hua YZ, Yang XC, Du SS, Jia SK, Mei GJ, Wang MC. Catalytic Asymmetric Umpolung Tandem Reactions of Hemiacetals via Dinuclear Zinc Cooperative Catalysis. Org Lett 2022; 24:3909-3914. [PMID: 35467355 DOI: 10.1021/acs.orglett.2c00913] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The umpolung activity of hemiacetals serving as α-carbon nucleophiles has been reported via dinuclear zinc cooperative catalysis. This umpolung strategy has been applied to catalytic asymmetric tandem reactions of 1-tosylindoline-2,3-diols with β,γ-unsaturated-α-keto compounds, providing a broad series of structurally diverse tetrahydrofuran spirooxindoles and dihydrofurans, respectively. In addition, products could be transformed to quinazoline and quinoline derivatives.
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Affiliation(s)
- Sheng-Nan Xing
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan 450000, P. R. China
| | - Yuan-Zhao Hua
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan 450000, P. R. China
| | - Xiao-Chao Yang
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan 450000, P. R. China
| | - Si-Si Du
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan 450000, P. R. China
| | - Shi-Kun Jia
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan 450000, P. R. China
| | - Guang-Jian Mei
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan 450000, P. R. China
| | - Min-Can Wang
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan 450000, P. R. China
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20
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Peng WL, Jhang YJ, Chang CY, Peng PK, Zhao WT, Wu YK. Total synthesis of (±)-mersicarpine following a 6- exo-trig radical cyclization. Org Biomol Chem 2022; 20:6193-6195. [PMID: 35467680 DOI: 10.1039/d2ob00620k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Described is a total synthesis of racemic mersicarpine from diethyl 4-oxopimelate. The synthetic route takes advantage of a 2-indolyl radical cyclization to construct the pyrido[1,2-a]indole scaffold bearing the all-carbon quaternary stereocenter.
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Affiliation(s)
- Wan-Ling Peng
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
| | - Yin-Jia Jhang
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
| | - Chieh-Yu Chang
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
| | - Po-Kai Peng
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
| | - Wei-Ting Zhao
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
| | - Yen-Ku Wu
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
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21
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Shinde MH, Ramana CV. Facile synthesis of the spiro-pyridoindolone scaffold via a gold-catalysed intramolecular alkynol cyclisation/hydroindolylation. Org Biomol Chem 2022; 20:2086-2095. [PMID: 35188513 DOI: 10.1039/d1ob02483c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A simple approach for the synthesis of pyridoindolone scaffolds with a spiroannulated tetrahydrofuran ring is described. The overall process comprises intramolecular sequential gold-catalysed 5-endo-dig alkynol cycloisomerization and subsequent addition of indole C2 to the in situ generated oxocarbenium cation.
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Affiliation(s)
- Mahesh H Shinde
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Chepuri V Ramana
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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22
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Merx J, Houthuijs KJ, Elferink H, Witlox E, Mecinović J, Oomens J, Martens J, Boltje TJ, Rutjes FPJT. Characterization of Cyclic N-Acyliminium Ions by Infrared Ion Spectroscopy. Chemistry 2022; 28:e202104078. [PMID: 34911145 PMCID: PMC9302692 DOI: 10.1002/chem.202104078] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Indexed: 11/10/2022]
Abstract
N-Acyliminium ions are highly reactive intermediates that are important for creating CC-bonds adjacent to nitrogen atoms. Here we report the characterization of cyclic N-acyliminium ions in the gas phase, generated by collision induced dissociation tandem mass spectrometry followed by infrared ion spectroscopy using the FELIX infrared free electron laser. Comparison of DFT calculated spectra with the experimentally observed IR spectra provided valuable insights in the conformations of the N-acyliminium ions.
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Affiliation(s)
- Jona Merx
- Institute for Molecules and Materials, Synthetic Organic ChemistryRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
| | - Kas J. Houthuijs
- Institute for Molecules and Materials, FELIX LaboratoryRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
| | - Hidde Elferink
- Institute for Molecules and Materials, Synthetic Organic ChemistryRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
| | - Eva Witlox
- Institute for Molecules and Materials, Synthetic Organic ChemistryRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
| | - Jasmin Mecinović
- Department of Physics, Chemistry and PharmacyUniversity of Southern DenmarkCampusvej 555230OdenseDenmark
| | - Jos Oomens
- Institute for Molecules and Materials, FELIX LaboratoryRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
| | - Jonathan Martens
- Institute for Molecules and Materials, FELIX LaboratoryRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
| | - Thomas J. Boltje
- Institute for Molecules and Materials, Synthetic Organic ChemistryRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
| | - Floris P. J. T. Rutjes
- Institute for Molecules and Materials, Synthetic Organic ChemistryRadboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
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23
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Zou C, Wu H, He J, Hu Y, Deng W, Li X, Hu J, Li Y, Huang Y. Anodic C(sp 3)-H Acyloxylation of Indolin-3-ones Enabled by Oxidant-Free Cross-Dehydrogenative C(sp 3)-O Coupling. J Org Chem 2022; 87:1335-1347. [PMID: 34985264 DOI: 10.1021/acs.joc.1c02644] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
An efficient anodic C(sp3)-H acyloxylation protocol has been established via intermolecular cross-dehydrogenative C(sp3)-O coupling. The protocol provides various C2-acyloxy indolin-3-ones without the addition of metal catalysts and external oxidants because indolin-3-ones can be directly oxidized at the anode. The effective application of several medical drugs and the realization of the gram-scale experiment have proven the practicality of this protocol.
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Affiliation(s)
- Canlin Zou
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Hongting Wu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Jiangtao He
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Yunfei Hu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Weijie Deng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Xinling Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Jinhui Hu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Yibiao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Yubing Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
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24
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Park SA, Park JU, Kim YL, Kim JH. Transition Metal-Free, Methoxide-Catalyzed Synthesis of Pyridoindolones. J Org Chem 2021; 86:17050-17062. [PMID: 34761671 DOI: 10.1021/acs.joc.1c02176] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A simple transition metal-free strategy for the synthesis of pyrido[1,2-a]indolone derivatives has been devised through sodium methoxide-catalyzed intramolecular cyclization of 2-alkenylated N-pyrimidyl indoles. The reactions involved a Smiles rearrangement/cyclization cascade, which resulted in a new series of N-fused indoles, potentially applicable skeletons in medicinal chemistry. This reaction presents simple eco-friendly reaction conditions, a high atom- and cost-economy, a short reaction time, and a broad range of substrate scope with high reaction efficiency.
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Affiliation(s)
- Sun-A Park
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, 52828 Jinju, Korea
| | - Jong-Un Park
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, 52828 Jinju, Korea
| | - Ye Lim Kim
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, 52828 Jinju, Korea
| | - Ju Hyun Kim
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, 52828 Jinju, Korea
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25
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Dhote PS, Patel P, Vanka K, Ramana CV. Total synthesis of the pseudoindoxyl class of natural products. Org Biomol Chem 2021; 19:7970-7994. [PMID: 34486008 DOI: 10.1039/d1ob01285a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pseudoindoxyl sub-structural motif, amongst the large set of the indole class of alkaloids, represents a unique subset of the oxygenated indole class of the alkaloid family. A majority of this class of natural products contains complex bridged/polycyclic scaffolds with interesting biological profiles. They are thus attractive synthetic targets. Starting from 1963, twenty-eight natural products having the pseudoindoxyl scaffold have been isolated, among which the synthesis of 13 natural products has been accomplished. In this review, we highlight the completed as well as the formal total synthesis of the natural products with a spiro-pseudoindoxyl ring, with a focus on their development. The challenges and the future perspective based on the recent developments in the field will also be discussed. We strongly believe that this review will not only update but also attract the attention of researchers in dealing with the synthesis of pseudoindoxyl compounds.
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Affiliation(s)
- Pawan S Dhote
- Organic Chemistry Division, CSIR-National Chemical Laboratory Dr Homi Bhabha Road, Pune-411008, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Pitambar Patel
- CSIR-North East Institute of Science and Technology, Assam-785006, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Kumar Vanka
- Physical Chemistry Division, CSIR-National Chemical Laboratory Dr Homi Bhabha Road, Pune-411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Chepuri V Ramana
- Organic Chemistry Division, CSIR-National Chemical Laboratory Dr Homi Bhabha Road, Pune-411008, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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26
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Ramaraju A, Upare A, Blanch EW, Maniam S, Sridhar B, Bathula SR, Raji Reddy C. Chemoselective [3 + 2] annulation of oxime acetate with 2-aryl-3-ethoxycarbonyl-pyrroline-4,5-dione: an entry to pyrrolo[2,3- b]pyrrole derivatives. Org Biomol Chem 2021; 19:7875-7882. [PMID: 34549208 DOI: 10.1039/d1ob00990g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel chemoselective [3 + 2] annulation reaction of easily accessible ketoxime acetate with 2-aryl-3-ethoxycarbonyl pyrroline-4,5-dione has been developed for the synthesis of unknown pyrrolo[2,3-b]pyrrole frameworks. This method involves copper-mediated N-O bond cleavage followed by the formation of carbon-carbon and carbon-nitrogen bonds. This operationally simple protocol provides broader functional group compatibility and good yields.
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Affiliation(s)
- Andhavaram Ramaraju
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India. .,School of Science, STEM college, RMIT University, Melbourne, Victoria, 3001, Australia
| | - Atul Upare
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India.
| | - Ewan W Blanch
- School of Science, STEM college, RMIT University, Melbourne, Victoria, 3001, Australia
| | - Subashani Maniam
- School of Science, STEM college, RMIT University, Melbourne, Victoria, 3001, Australia
| | - Balasubramanian Sridhar
- Center for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Surendar Reddy Bathula
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India.
| | - Chada Raji Reddy
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India.
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27
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Delayre B, Fung C, Wang Q, Zhu J. Enantioselective Total Synthesis of (+)‐Nordasycarpidone, (+)‐Dasycarpidone, and (+)‐Uleine. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100088] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Bastien Delayre
- 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
| | - Cédric Fung
- 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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28
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Li G, Gaeng N, Piemontesi C, Wang Q, Zhu J. Enantioselective Total Synthesis of (+)-Alstilobanine C, (+)-Undulifoline, and (-)-Alpneumine H. Angew Chem Int Ed Engl 2021; 60:12392-12395. [PMID: 33755301 DOI: 10.1002/anie.202103580] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Indexed: 01/06/2023]
Abstract
We report herein the enantioselective total synthesis of three monoterpene indole alkaloids, namely, (+)-alstilobanine C, (+)-undulifoline, and (-)-alpneumine H. The key features of our synthesis include: a) introduction of chirality via enantioselective deprotonation of a prochiral 4-substituted cyclohexanone; b) use of methoxymethyl (MOM) ether as both a hydroxyl protective group and a latent oxonium species for the formation of bridged oxepane and c) domino double reductive cyclization to build both the indole and the piperidine ring at the end of the synthesis. The synthesis confirmed the absolute configuration of these natural products assigned based on the biogenetic hypothesis.
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Affiliation(s)
- Guang Li
- 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
| | - Nicolas Gaeng
- 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
| | - Cyril Piemontesi
- 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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29
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Li G, Gaeng N, Piemontesi C, Wang Q, Zhu J. Enantioselective Total Synthesis of (+)‐Alstilobanine C, (+)‐Undulifoline, and (−)‐Alpneumine H. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103580] [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)
- Guang Li
- 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
| | - Nicolas Gaeng
- 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
| | - Cyril Piemontesi
- 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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30
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Zhang L, Bao W, Liang Y, Pan W, Li D, Kong L, Wang ZX, Peng B. Morita-Baylis-Hillman-Type [3,3]-Rearrangement: Switching from Z- to E-Selective α-Arylation by New Rearrangement Partners. Angew Chem Int Ed Engl 2021; 60:11414-11422. [PMID: 33644970 DOI: 10.1002/anie.202100497] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/25/2021] [Indexed: 01/03/2023]
Abstract
α-aryl α,β-unsaturated carbonyls represent an important class of derivatizable synthetic intermediates, however, the synthesis of such compounds still remains a challenge. Recently, we showcased a novel Z-selective α-arylation of α,β-unsaturated nitriles with aryl sulfoxides via [3,3]-rearrangement involving an Morita-Baylis-Hillman (MBH) process. Herein, we demonstrate the feasibility of reversing the stereoselectivity of such MBH-type [3,3]-rearrangement by switching to a new pair of rearrangement partners consisting of aryl iodanes and α,β-unsaturated oxazolines. As a result, the two protocols complement each other in approaching E- or Z-α-aryl α,β-unsaturated carbonyl derivatives. Mechanistic studies reveal a possible reaction pathway and provide an explanation for the opposite stereoselectivities.
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Affiliation(s)
- Lei Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Wangzhen Bao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Yuchen Liang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Wenjing Pan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Dongyang Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
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31
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Zhang L, Bao W, Liang Y, Pan W, Li D, Kong L, Wang Z, Peng B. Morita–Baylis–Hillman‐Type [3,3]‐Rearrangement: Switching from
Z
‐ to
E
‐Selective α‐Arylation by New Rearrangement Partners. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Lei Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Wangzhen Bao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Yuchen Liang
- School of Chemical Sciences University of the Chinese Academy of Sciences Beijing 100049 China
| | - Wenjing Pan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Dongyang Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
| | - Zhi‐Xiang Wang
- School of Chemical Sciences University of the Chinese Academy of Sciences Beijing 100049 China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal University Jinhua 321004 China
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32
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He Y, Cao J, Wu H, Wang Q, Zhu J. Catalytic Enantioselective Aminopalladation–Heck Cascade. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yu‐Ping He
- 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
| | - Jian Cao
- 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
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Hangzhou Normal University Hangzhou 311121 P. R. China
| | - Hua Wu
- 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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33
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He Y, Cao J, Wu H, Wang Q, Zhu J. Catalytic Enantioselective Aminopalladation–Heck Cascade. Angew Chem Int Ed Engl 2021; 60:7093-7097. [DOI: 10.1002/anie.202016001] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/26/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Yu‐Ping He
- 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
| | - Jian Cao
- 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
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Hangzhou Normal University Hangzhou 311121 P. R. China
| | - Hua Wu
- 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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34
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Shiobara T, Nagumo Y, Nakajima R, Fukuyama T, Yokoshima S, Usui T. A novel translation inhibitor, mersicarpine, inhibits S-phase progression and induces apoptosis in HL60 cells. Biosci Biotechnol Biochem 2021; 85:92-96. [PMID: 33577668 DOI: 10.1093/bbb/zbaa070] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 10/13/2020] [Indexed: 11/14/2022]
Abstract
Mersicarpine is an aspidosperma alkaloid isolated from the Kopsia genus of plants. Its intriguing structural features have attracted much attention in synthetic organic chemistry, but no biological activity has been reported. Here, we report the effects of mersicarpine on human leukemia cell line HL60. At concentrations above 30 µm, mersicarpine reversibly arrested cell cycle progression in S-phase. At higher concentrations, it induced not only production of reactive oxygen species, but also apoptosis. Macromolecular synthesis assay revealed that mersicarpine specifically inhibits protein synthesis. These results suggest that mersicarpine is a novel translation inhibitor that induces apoptosis.
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Affiliation(s)
- Tomoko Shiobara
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
| | - Yoko Nagumo
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan.,Alliance for Research on the Mediterranean and North Africa (ARENA), University of Tsukuba, Tsukuba, Japan
| | - Rie Nakajima
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Japan
| | - Satoshi Yokoshima
- Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Japan
| | - Takeo Usui
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan.,Microbiology Research Center for Sustainability (MiCS), University of Tsukuba, Tsukuba, Japan
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35
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Unified divergent strategy towards the total synthesis of the three sub-classes of hasubanan alkaloids. Nat Commun 2021; 12:36. [PMID: 33397993 PMCID: PMC7782686 DOI: 10.1038/s41467-020-20274-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 11/16/2020] [Indexed: 12/29/2022] Open
Abstract
Elegant asymmetric synthesis of hasubanan alkaloids have been developed over the past decades. However, a divergent approach leading to all three sub-classes of this family of natural products remains unknown. We report herein the realization of such an endeavor by accomplishing enantioselective total syntheses of four representative members. The synthesis is characterized by catalytic enantioselective construction of the tricyclic compounds from which three different intramolecular C-N bond forming processes leading to three topologically different hasubanan alkaloids are developed. An aza-Michael addition is used for the construction of the aza-[4.4.3]-propellane structure of (-)-cepharamine, whereas an oxidation/double deprotection/intramolecular hemiaminal forming sequence is developed to forge the bridged 6/6/6/6 tetracycle of (-)-cepharatines A and C and a domino bromination/double deprotection/cyclization sequence allows the build-up of the 6/6/5/5 fused tetracyclic structure of (−)-sinoracutine. Several Hasubanan alkaloids have been synthesized in the past decades, however a divergent approach to access the 3 subclasses of such natural products has not been reported yet. Here, the authors show the enantioselective total syntheses of four representative members via a unified strategy leading to the three topologically different classes of alkaloids.
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36
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Synthesis of leuconoxine, leuconodine B, and rhazinilam by transformation of melodinine E via 6-hydro-21-dehydroxyleuconolam. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131809] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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37
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Generation of acyclic chiral building blocks containing a quaternary stereocenter. Formal synthesis of alkaloids of the leuconolam-leuconoxine-mersicarpine group. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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38
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Kumar A, Kant R, Tadigoppula N. Ruthenium(II)‐Catalyzed Synthesis of Indolo[2,1‐a]isoquinolines through Double Oxidative Annulation Reaction of Phenyl Isocyanates with Di(hetero)aryl Alkynes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000963] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Amrendra Kumar
- Medicinal and Process Chemistry Division CSIR-Central Drug Research Institute Lucknow 226031 India
| | - Ruchir Kant
- Molecular and Structural Biology Division CSIR-Central Drug Research Institute Lucknow 226031 India
| | - Narender Tadigoppula
- Medicinal and Process Chemistry Division CSIR-Central Drug Research Institute Lucknow 226031 India
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39
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Enantioselective total syntheses of (+)-stemofoline and three congeners based on a biogenetic hypothesis. Nat Commun 2020; 11:5314. [PMID: 33082332 PMCID: PMC7576163 DOI: 10.1038/s41467-020-19163-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 09/29/2020] [Indexed: 12/13/2022] Open
Abstract
The powerful insecticidal and multi-drug-resistance-reversing activities displayed by the stemofoline group of alkaloids render them promising lead structures for further development as commercial agents in agriculture and medicine. However, concise, enantioselective total syntheses of stemofoline alkaloids remain a formidable challenge due to their structural complexity. We disclose herein the enantioselective total syntheses of four stemofoline alkaloids, including (+)-stemofoline, (+)-isostemofoline, (+)-stemoburkilline, and (+)-(11S,12R)-dihydrostemofoline, in just 19 steps. Our strategy relies on a biogenetic hypothesis, which postulates that stemoburkilline and dihydrostemofolines are biogenetic precursors of stemofoline and isostemofoline. Other highlights of our approach are the use of Horner–Wadsworth–Emmons reaction to connect the two segments of the molecule, an improved protocol allowing gram-scale access to the tetracyclic cage-type core, and a Cu-catalyzed direct and versatile nucleophilic alkylation reaction on an anti-Bredt iminium ion. The synthetic techniques that we developed could also be extended to the preparation of other Stemona alkaloids. Stemofoline alkaloids are promising lead structures for further development in the fields of agriculture and medicine. Here, the authors report the enantioselective total syntheses of four stemofoline alkaloids in 19 steps based on a biogenetic hypothesis.
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40
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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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41
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Ding WY, Yan YM, Meng XH, Nafie LA, Xu T, Dukor RK, Qin HB, Cheng YX. Isolation, Total Synthesis, and Absolute Configuration Determination of Renoprotective Dimeric N-Acetyldopamine-Adenine Hybrids from the Insect Aspongopus chinensis. Org Lett 2020; 22:5726-5730. [PMID: 32525688 DOI: 10.1021/acs.orglett.0c01593] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Aspongdopamines A and B (1 and 2), unusual adducts composed of N-acetyldopamine and adenine were isolated from the insect Aspongopus chinensis. Compounds 1 and 2 are positional isomers both isolated as racemates. Chiral separation assisted by 14-step total synthesis and computation including vibrational circular dichroism calculations allowed us to unambiguously assign the absolute configurations of eight stereoisomers. Renal fibrosis inhibition of the stereoisomers was evaluated in TGF-β1-induced rat kidney epithelial cells.
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Affiliation(s)
- Wei-Yi Ding
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, P.R. China
| | - Yong-Ming Yan
- School of Pharmaceutical Sciences, Shenzhen University Health Science Center, Shenzhen 518060, P.R. China
| | - Xiao-Hui Meng
- School of Pharmaceutical Sciences, Shenzhen University Health Science Center, Shenzhen 518060, P.R. China
| | - Laurence A Nafie
- Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100, United States
| | - Te Xu
- School of Pharmaceutical Sciences, Shenzhen University Health Science Center, Shenzhen 518060, P.R. China
| | - Rina K Dukor
- BioTools, Inc., 17546 Beeline Highway, Jupiter, Florida 33458, United States
| | - Hong-Bo Qin
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, P.R. China
| | - Yong-Xian Cheng
- School of Pharmaceutical Sciences, Shenzhen University Health Science Center, Shenzhen 518060, P.R. China
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42
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Varga S, Angyal P, Martin G, Egyed O, Holczbauer T, Soós T. Total Syntheses of (−)‐Minovincine and (−)‐Aspidofractinine through a Sequence of Cascade Reactions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004769] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Szilárd Varga
- Institute of Organic Chemistry Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
| | - Péter Angyal
- Institute of Organic Chemistry Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
| | - Gábor Martin
- Institute of Organic Chemistry Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
| | - Orsolya Egyed
- Instrumentation Center Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
| | - Tamás Holczbauer
- Institute of Organic Chemistry Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
- Instrumentation Center Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
| | - Tibor Soós
- Institute of Organic Chemistry Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
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43
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Varga S, Angyal P, Martin G, Egyed O, Holczbauer T, Soós T. Total Syntheses of (-)-Minovincine and (-)-Aspidofractinine through a Sequence of Cascade Reactions. Angew Chem Int Ed Engl 2020; 59:13547-13551. [PMID: 32351014 PMCID: PMC7497198 DOI: 10.1002/anie.202004769] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/27/2020] [Indexed: 12/31/2022]
Abstract
We report 8‐step syntheses of (−)‐minovincine and (−)‐aspidofractinine using easily available and inexpensive reagents and catalyst. A key element of the strategy was the utilization of a sequence of cascade reactions to rapidly construct the penta‐ and hexacyclic frameworks. These cascade transformations included organocatalytic Michael‐aldol condensation, a multistep anionic Michael‐SN2 cascade reaction, and Mannich reaction interrupted Fischer indolization. To streamline the synthetic routes, we also investigated the deliberate use of steric effect to secure various chemo‐ and regioselective transformations.
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Affiliation(s)
- Szilárd Varga
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary
| | - Péter Angyal
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary
| | - Gábor Martin
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary
| | - Orsolya Egyed
- Instrumentation Center, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary
| | - Tamás Holczbauer
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary.,Instrumentation Center, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary
| | - Tibor Soós
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary
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44
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Abstract
In this work, a photocatalytic strategy for a rapid and modular access to polycyclic indolones starting from readily available indoles is reported. This strategy relies on the use of redox-active esters in combination with an iridium-based photocatalyst under visible-light irradiation. The generation of alkyl radicals through decarboxylative single electron reductions enables intramolecular homolytic aromatic substitutions with a pending indole moiety to afford pyrrolo- and pyridoindolone derivatives under mild conditions. Furthermore, it was demonstrated that these radicals could also be engaged into cascades consisting of an intermolecular Giese-type addition followed by an intramolecular homolytic aromatic substitution to rapidly assemble valuable azepinoindolones.
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Affiliation(s)
- Tanguy Saget
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301Université Paris-Sud, Université Paris-Saclay1, av. de la Terrasse91198Gif-sur-YvetteFrance
- Institut für Organische ChemieUniversität RegensburgUniversitätsstrasse 31RegensburgGermany
| | - Burkhard König
- Institut für Organische ChemieUniversität RegensburgUniversitätsstrasse 31RegensburgGermany
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45
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Hu J, Pan S, Zhu S, Yu P, Xu R, Zhong G, Zeng X. Pd-Catalyzed Dearomative Asymmetric Allylic Alkylation of Naphthols with Alkoxyallenes. J Org Chem 2020; 85:7896-7904. [DOI: 10.1021/acs.joc.0c00582] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jinjin Hu
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Shulei Pan
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Shuai Zhu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Peiyuan Yu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ruigang Xu
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Guofu Zhong
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Xiaofei Zeng
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
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46
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Dagoneau D, Wang Q, Zhu J. Towards the Sarpagine-Ajmaline-Macroline Family of Indole Alkaloids: Enantioselective Synthesis of an N-Demethyl Alstolactone Diastereomer. Chemistry 2020; 26:4866-4873. [PMID: 32065430 DOI: 10.1002/chem.202000415] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 02/14/2020] [Indexed: 12/19/2022]
Abstract
the strategy involving the use of functionalized tetrahydro-6H-cycloocta[b]indol-6-one is reported as a key intermediate for synthesis of members of the sarpagine-ajmaline-macroline family of monoterpene indole alkaloids. The desired tricycle was synthesized through the following key steps: 1) Evans' syn-selective aldolization; 2) Liebeskind-Srogl cross-coupling using the phenylthiol ester of 3-chloropropanoic acid as a surrogate of acrylic thioester for the synthesis of 2,3-disubstituted indoles; and 3) ring-closing metathesis (RCM) for the formation of the eight-membered ring. An N-allylation followed by intramolecular 1,4-addition was planned for synthesis of the vobasine class of natural products. However, attempted cyclizations under a diverse set of conditions involving anionic, radical, and organopalladium/organonickel species failed to produce the bridged ring system. On the other hand, esterification of the pendant primary alcohol function with acetoacetic acid, followed by intramolecular Michael addition, afforded the desired tetracycle with excellent diastereoselectivity. Subsequent functional group manipulation and transannular cyclization of the amino alcohol afforded the N(1)-demethyl-3,5-diepi-alstolactone. We believe that the same synthetic route would afford the alstolactone should the amino alcohol with appropriate stereochemistry be used as the starting material.
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Affiliation(s)
- Dylan Dagoneau
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, École 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, École 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, École Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
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47
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Liu K, Song W, Deng Y, Yang H, Song C, Abdelilah T, Wang S, Cong H, Tang S, Lei A. Electrooxidation enables highly regioselective dearomative annulation of indole and benzofuran derivatives. Nat Commun 2020; 11:3. [PMID: 31911586 PMCID: PMC6946675 DOI: 10.1038/s41467-019-13829-4] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 11/29/2019] [Indexed: 12/27/2022] Open
Abstract
The dearomatization of arenes represents a powerful synthetic methodology to provide three-dimensional chemicals of high added value. Here we report a general and practical protocol for regioselective dearomative annulation of indole and benzofuran derivatives in an electrochemical way. Under undivided electrolytic conditions, a series of highly functionalized five to eight-membered heterocycle-2,3-fused indolines and dihydrobenzofurans, which are typically unattainable under thermal conditions, can be successfully accessed in high yield with excellent regio- and stereo-selectivity. This transformation can also tolerate a wide range of functional groups and achieve good efficiency in large-scale synthesis under oxidant-free conditions. In addition, cyclic voltammetry, electron paramagnetic resonance (EPR) and kinetic studies indicate that the dehydrogenative dearomatization annulations arise from the anodic oxidation of indole into indole radical cation, and this process is the rate-determining step. Enriching the chemical space of polycyclic heterocycles is of high value in chemical biology. Here, the authors report an electrooxidative protocol for the regioselective dearomative annulation of indoles and benzofurans under undivided cell conditions and obtain five- to eight-membered fused heterocycles.
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Affiliation(s)
- Kun Liu
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, P. R. China
| | - Wenxu Song
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, P. R. China
| | - Yuqi Deng
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, P. R. China
| | - Huiyue Yang
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, P. R. China
| | - Chunlan Song
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, P. R. China
| | - Takfaoui Abdelilah
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, P. R. China
| | - Shengchun Wang
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, P. R. China
| | - Hengjiang Cong
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, P. R. China
| | - Shan Tang
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, P. R. China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, P. R. China.
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48
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Ma S, Long D, Chen P, Shi H, Li H, Fang R, Wang X, Xie X, She X. Synthesis of 2,3-disubstituted indoles via a tandem reaction. Org Chem Front 2020. [DOI: 10.1039/d0qo00765j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A wide array of 2,3-disubstituted indoles were accessed in modest to good yields via a tandem reduction/condensation/fragmentation/cyclization sequence. Differential fragmentation made the reaction more complicated.
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Affiliation(s)
- Shiqiang Ma
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Dan Long
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Peiqi Chen
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Hongliang Shi
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Huilin Li
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Ran Fang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xiaolei Wang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xingang Xie
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xuegong She
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
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Wei Q, Cai J, Hu XD, Zhao J, Cong H, Zheng C, Liu WB. Enantioselective Access to γ-All-Carbon Quaternary Center-Containing Cyclohexanones by Palladium-Catalyzed Desymmetrization. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04390] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Qiang Wei
- Sauvage Center for Molecular Sciences; Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education; College of Chemistry and Molecular Sciences; Wuhan University, Wuhan, Hubei 430072, China
| | - Jinhui Cai
- Sauvage Center for Molecular Sciences; Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education; College of Chemistry and Molecular Sciences; Wuhan University, Wuhan, Hubei 430072, China
| | - Xu-Dong Hu
- Sauvage Center for Molecular Sciences; Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education; College of Chemistry and Molecular Sciences; Wuhan University, Wuhan, Hubei 430072, China
| | - Jing Zhao
- Sauvage Center for Molecular Sciences; Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education; College of Chemistry and Molecular Sciences; Wuhan University, Wuhan, Hubei 430072, China
| | - Hengjiang Cong
- Sauvage Center for Molecular Sciences; Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education; College of Chemistry and Molecular Sciences; Wuhan University, Wuhan, Hubei 430072, China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Wen-Bo Liu
- Sauvage Center for Molecular Sciences; Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education; College of Chemistry and Molecular Sciences; Wuhan University, Wuhan, Hubei 430072, China
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Affiliation(s)
- Jing Zhang
- CAS Key Lab of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China
- The University of Chinese Academy of Sciences, Beijing 100864, China
| | - Fu-She Han
- CAS Key Lab of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China
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