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Zalte RR, Festa AA, Demidov SA, Awuku SO, Golubenkova AS, Mironov YY, Golantsov NE, Storozhenko OA, Novikov AP, Voskressensky LG. Total synthesis of the taraxacine A natural product via Ag(I)-catalysed imidate-alkyne cyclization. Org Biomol Chem 2025; 23:1386-1393. [PMID: 39717940 DOI: 10.1039/d4ob01876a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2024]
Abstract
A domino approach towards β-carboline natural product taraxacine A and its analogues was developed. The main step relies on a silver(I) and base co-catalysed imidate-alkyne cyclization. The reaction tolerates primary and secondary alcohols, and various substitutions in the indole are possible.
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Affiliation(s)
- Rajesh R Zalte
- Organic Chemistry Department, Science Faculty, Patrice Lumumba Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia.
| | - Alexey A Festa
- Organic Chemistry Department, Science Faculty, Patrice Lumumba Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia.
| | - Sergei A Demidov
- Organic Chemistry Department, Science Faculty, Patrice Lumumba Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia.
| | - Samuel O Awuku
- Organic Chemistry Department, Science Faculty, Patrice Lumumba Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia.
| | - Alexandra S Golubenkova
- Organic Chemistry Department, Science Faculty, Patrice Lumumba Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia.
| | - Yuri Yu Mironov
- Organic Chemistry Department, Science Faculty, Patrice Lumumba Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia.
| | - Nikita E Golantsov
- Organic Chemistry Department, Science Faculty, Patrice Lumumba Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia.
| | - Olga A Storozhenko
- Organic Chemistry Department, Science Faculty, Patrice Lumumba Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia.
| | - Anton P Novikov
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky prosp., 31 Bldg. 4, 119071 Moscow, Russia
| | - Leonid G Voskressensky
- Organic Chemistry Department, Science Faculty, Patrice Lumumba Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, 117198 Moscow, Russia.
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Ballesteros-Garrido R. Recent developments in the synthesis of 4-, 5-, 6- and 7-azaindoles. ADVANCES IN HETEROCYCLIC CHEMISTRY 2023. [DOI: 10.1016/bs.aihch.2023.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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3
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Foley DJ, Waldmann H. Ketones as strategic building blocks for the synthesis of natural product-inspired compounds. Chem Soc Rev 2022; 51:4094-4120. [PMID: 35506561 DOI: 10.1039/d2cs00101b] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Natural product-inspired compound collections serve as excellent sources for the identification of new bioactive compounds to treat disease. However, such compounds must necessarily be more structurally-enriched than traditional screening compounds, therefore inventive synthetic strategies and reliable methods are needed to prepare them. Amongst the various possible starting materials that could be considered for the synthesis of natural product-inspired compounds, ketones can be especially valuable due to the vast variety of complexity-building synthetic transformations that they can take part in, their high prevalence as commercial building blocks, and relative ease of synthesis. With a view towards developing a unified synthetic strategy for the preparation of next generation bioactive compound collections, this review considers whether ketones could serve as general precursors in this regard, and summarises the opulence of synthetic transformations available for the annulation of natural product ring-systems to ketone starting materials.
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Affiliation(s)
- Daniel J Foley
- School of Physical and Chemical Sciences, University of Canterbury, Christchurch, New Zealand. .,Max-Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Herbert Waldmann
- Max-Planck Institute of Molecular Physiology, Dortmund, Germany.,Faculty of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany
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Alekseyev RS, Aliyev FN, Terenin VI. Methods for the synthesis of 3H-pyrrolo[2,3-c]quinolines. Chem Heterocycl Compd (N Y) 2022. [DOI: 10.1007/s10593-021-03036-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Motati DR, Amaradhi R, Ganesh T. Recent developments in the synthesis of azaindoles from pyridine and pyrrole building blocks. Org Chem Front 2021. [DOI: 10.1039/d0qo01079k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The azaindole framework is ubiquitous in bioactive natural products and pharmaceuticals. This review highlights the synthetic approaches to azaindoles with advantages and limitations, mechanistic pathways and biological importance.
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Affiliation(s)
- Damoder Reddy Motati
- Department of Pharmacology and Chemical Biology
- Emory School of Medicine
- Atlanta
- USA
| | - Radhika Amaradhi
- Department of Pharmacology and Chemical Biology
- Emory School of Medicine
- Atlanta
- USA
| | - Thota Ganesh
- Department of Pharmacology and Chemical Biology
- Emory School of Medicine
- Atlanta
- USA
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Beveridge RE, Hu Y, Gregoire B, Batey RA. Di- tert-butyl Ethynylimidodicarbonate as a General Synthon for the β-Aminoethylation of Organic Electrophiles: Application to the Formal Synthesis of Pyrrolidinoindoline Alkaloids (±)-CPC-1 and (±)-Alline. J Org Chem 2020; 85:8447-8461. [PMID: 32495626 DOI: 10.1021/acs.joc.0c00781] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The reagent di-tert-butyl ethynylimidodicarbonate is demonstrated as a β-aminoethyl anion synthetic equivalent. It can be used to install ethyleneamine groups by exploiting its terminal alkyne reactivity with common organic electrophiles. Reactions exemplified with this terminal ynimide reagent include additions to imines, aldehydes, ketones, pyridinium salts, Michael acceptors, epoxides, and Pd-catalyzed Sonogashira couplings. Subsequent regioselective [3 + 2] cycloadditions of the alkynyl-imides (ynimides) generate N,N-di-Boc imide-functionalized triazole and isoxazole heterocycles. Reduction of the ynimides with Pd-catalyzed hydrogenation generates ethyleneimides with easily removable N,N-di-Boc-carbamate protecting groups, allowing for a flexible ynimide-based approach to ethyleneamine installation. The utility of this two-step aminoethylation strategy was demonstrated in the short formal syntheses of pyrrolidinoindoline alkaloids (±)-CPC-1 and (±)-alline. Analogously, the reagent (N,N,N')-tri-Boc 2-ethynylhydrazine serves as a β-hydrazinoethyl anion synthetic equivalent.
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Affiliation(s)
- Ramsay E Beveridge
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Yiwei Hu
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Bruce Gregoire
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Robert A Batey
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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Li Z, Li X, Su MB, Gao LX, Zhou YB, Yuan B, Lyu X, Yan Z, Hu C, Zhang H, Luo C, Chen Z, Li J, Zhao Y. Discovery of a Potent and Selective NF-κB-Inducing Kinase (NIK) Inhibitor That Has Anti-inflammatory Effects in Vitro and in Vivo. J Med Chem 2020; 63:4388-4407. [PMID: 32216342 DOI: 10.1021/acs.jmedchem.0c00396] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The overexpression of NIK plays a critical role in liver inflammatory diseases. Treatment of such diseases with small-molecule NIK inhibitors is a reasonable but underexplored approach. In this paper, we reported the discovery of a potent and selective NIK inhibitor 46 (XT2). 46 inhibited the NIK kinase with an IC50 value of 9.1 nM in vitro, and it also potently suppressed NIK activities in intact cells. In isogenic primary hepatocytes, treatment of 46 efficiently suppressed the expressions of NIK-induced genes. 46 was orally bioavailable in mice with moderate systemic exposure. In a NIK-associated mouse liver inflammation model, 46 suppressed CCl4-induced upregulation of ALT, a key biomarker of acute liver injury. 46 also decreased immune cell infiltration into the injured liver tissue. Overall, these studies provide examples that an NIK inhibitor is able to suppress toxin-induced liver inflammations, which indicates its therapeutic potentials for the treatment of liver inflammatory diseases.
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Affiliation(s)
- Zhiqiang Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xinzhi Li
- HIT Center for Life Sciences, School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Ming-Bo Su
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Li-Xin Gao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Yu-Bo Zhou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Bingchuan Yuan
- HIT Center for Life Sciences, School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Xilin Lyu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Ziqin Yan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Chujiao Hu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
| | - Hao Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Cheng Luo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Zheng Chen
- HIT Center for Life Sciences, School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
- Open Studio for Druggability Research of Marine Natural Products, Pilot National Laboratory for Marine Science and Technology (Qingdao), 1 Wenhai Road, Aoshanwei, Jimo, Qingdao 266237, China
| | - Yujun Zhao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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Affiliation(s)
- So Won Youn
- Center for New Directions in Organic Synthesis, Department of Chemistry and Institute for Natural Sciences; Hanyang University; Seoul 04763 Korea
| | - Tae Yun Ko
- Center for New Directions in Organic Synthesis, Department of Chemistry and Institute for Natural Sciences; Hanyang University; Seoul 04763 Korea
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Cui Y, Shen N, Wang S, Mei L, Liu Z, Dang J, Tao Y. Trace anti-inflammatory β-carboline alkaloid identified in Arenaria kansuensis by two-dimensional chromatography coupled with UniElut C18AEX based solid-phase extraction re-enrichment technology. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1068-1069:282-288. [PMID: 29127058 DOI: 10.1016/j.jchromb.2017.10.058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 09/25/2017] [Accepted: 10/30/2017] [Indexed: 01/29/2023]
Abstract
Traditional Chinese medicine is important for discovery of drug precursors. However, information about trace chemical composition of them is very limited due to the lack of appropriate enrichment and chromatographic purification methods In our work, A. kansuensis was taken as an example, a novel two-dimensional reversed-phase/hydrophilic interaction liquid chromatography coupled with UniElut C18AEX solid-phase extraction re-enrichment method based on anti-inflammatory bioactivity-guided assay was developed for gathering and purifying trace β-carboline alkaloids with high purity from the ethyl acetate extract of A. kansuensis. Extraction with ethyl acetate as the first enrichment method, then, a UniElut C18AEX column was employed to re-enrich trace fraction which was hardly detected by diode array detector during high performance liquid chromatography analysis, eighteen grams of UniElut C18AEX was used as sorbent material to pack a 60mL pipette tip for the extraction of β-carboline alkaloids from 100mL of ethyl acetate sample. The whole extraction process was finished in 10min, and the volume of eluent used was only 120mL. The enriching fraction (100mg) was used for the following two-dimensional purification. First-dimensional preparation was carried on a RP-Megress-C18 prep column, and four anti-inflammatory fractions were obtained from the 100mg re-enriching sample with a recovery of 66.9%. A HILIC-XAmide prep column was selected for the second dimensional preparation. Finally, two pair of analogue β-carboline alkaloids and one other β-carboline alkaloid were purified from A. kansuensis. The purity of the isolated compounds was ≫>98%, which indicated that the method was efficient to re-enrich and manufacture single trace β-carboline alkaloids with high purity from A. kansuensis. Additionally, this method showed great potential to serve as a good example for the purification and enrichment of analogue structure anti-inflammation carboline alkaloids from other plant materials.
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Affiliation(s)
- Yulei Cui
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research of Qinghai Province, Xining 810008, Qinghai, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Na Shen
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research of Qinghai Province, Xining 810008, Qinghai, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Shuo Wang
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research of Qinghai Province, Xining 810008, Qinghai, PR China
| | - Lijuan Mei
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research of Qinghai Province, Xining 810008, Qinghai, PR China
| | - Zenggen Liu
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research of Qinghai Province, Xining 810008, Qinghai, PR China
| | - Jun Dang
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research of Qinghai Province, Xining 810008, Qinghai, PR China.
| | - Yanduo Tao
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining 810008, Qinghai, PR China; Key Laboratory of Tibetan Medicine Research of Qinghai Province, Xining 810008, Qinghai, PR China.
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Thomae D, Jeanty M, Coste J, Guillaumet G, Suzenet F. Extending the Scope of the Aza-Fischer Synthesis of 4- and 6-Azaindoles. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300167] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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Raikar SN, Malinakova HC. Divergent reaction pathways of homologous and isosteric propargyl amides in sequential Ru/Pd-catalyzed annulations for the synthesis of heterocycles. J Org Chem 2013; 78:3832-46. [PMID: 23521584 DOI: 10.1021/jo400246d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cu-catalyzed three-component coupling of imines with benzoyl chloride and terminal arylalkynes followed by enyne ring-closing metathesis (RCM) and Heck cyclization afforded medicinally relevant benzoindolines, cyclopropane-fused indenopyridines, pyrroloquinolines, or 1,7-tetrahydrophenanthrolines via divergent cyclization pathways. Unexpectedly, the Pd-catalyzed cyclization of heterocyclic dienes proceeded via regiodivergent 5-exo or 6-endo pathways depending on the ring size (n = 1, 2) or the presence of isosteric groups (CH vs N). A one-pot protocol for the enyne-RCM/Heck annulation featuring a sequential addition of the Ru and Pd catalysts was developed maximizing the synthetic efficiency.
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Affiliation(s)
- Sandeep N Raikar
- Department of Chemistry, The University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, USA
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