1
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Parte LG, Fernández S, Sandonís E, Guerra J, López E. Transition-Metal-Catalyzed Transformations for the Synthesis of Marine Drugs. Mar Drugs 2024; 22:253. [PMID: 38921564 PMCID: PMC11204618 DOI: 10.3390/md22060253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/23/2024] [Accepted: 05/25/2024] [Indexed: 06/27/2024] Open
Abstract
Transition metal catalysis has contributed to the discovery of novel methodologies and the preparation of natural products, as well as new chances to increase the chemical space in drug discovery programs. In the case of marine drugs, this strategy has been used to achieve selective, sustainable and efficient transformations, which cannot be obtained otherwise. In this perspective, we aim to showcase how a variety of transition metals have provided fruitful couplings in a wide variety of marine drug-like scaffolds over the past few years, by accelerating the production of these valuable molecules.
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Affiliation(s)
- Lucía G. Parte
- Department of Organic Chemistry, Science Faculty, University of Valladolid (UVa), Paseo de Belén 7, 47011 Valladolid, Spain; (L.G.P.); (E.S.)
| | - Sergio Fernández
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London (QMUL), Mile End Road, London E1 4NS, UK;
| | - Eva Sandonís
- Department of Organic Chemistry, Science Faculty, University of Valladolid (UVa), Paseo de Belén 7, 47011 Valladolid, Spain; (L.G.P.); (E.S.)
| | - Javier Guerra
- Department of Organic Chemistry, Science Faculty, University of Valladolid (UVa), Paseo de Belén 7, 47011 Valladolid, Spain; (L.G.P.); (E.S.)
| | - Enol López
- Department of Organic Chemistry, ITAP, School of Engineering (EII), University of Valladolid (UVa), Dr Mergelina, 47002 Valladolid, Spain
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2
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Peña-Corona SI, Hernández-Parra H, Bernal-Chávez SA, Mendoza-Muñoz N, Romero-Montero A, Del Prado-Audelo ML, Cortés H, Ateşşahin DA, Habtemariam S, Almarhoon ZM, Abdull Razis AF, Modu B, Sharifi-Rad J, Leyva-Gómez G. Neopeltolide and its synthetic derivatives: a promising new class of anticancer agents. Front Pharmacol 2023; 14:1206334. [PMID: 37346293 PMCID: PMC10280003 DOI: 10.3389/fphar.2023.1206334] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 05/25/2023] [Indexed: 06/23/2023] Open
Abstract
Being the first or second cause of death worldwide, cancer represents the most significant clinical, social, and financial burden of any human illness. Despite recent progresses in cancer diagnosis and management, traditional cancer chemotherapies have shown several adverse side effects and loss of potency due to increased resistance. As a result, one of the current approaches is on with the search of bioactive anticancer compounds from natural sources. Neopeltolide is a marine-derived macrolide isolated from deep-water sponges collected off Jamaica's north coast. Its mechanism of action is still under research but represents a potentially promising novel drug for cancer therapy. In this review, we first illustrate the general structural characterization of neopeltolide, the semi-synthetic derivatives, and current medical applications. In addition, we reviewed its anticancer properties, primarily based on in vitro studies, and the possible clinical trials. Finally, we summarize the recent progress in the mechanism of antitumor action of neopeltolide. According to the information presented, we identified two principal challenges in the research, i) the effective dose which acts neopeltolide as an anticancer compound, and ii) to unequivocally establish the mechanism of action by which the compound exerts its antiproliferative effect.
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Affiliation(s)
- Sheila I. Peña-Corona
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Héctor Hernández-Parra
- Departamento de Farmacología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Sergio A. Bernal-Chávez
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | | | - Alejandra Romero-Montero
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | | | - Hernán Cortés
- Laboratorio de Medicina Genómica, Departamento de Genómica, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Ciudad de México, Mexico
| | - Dilek Arslan Ateşşahin
- Department of Plant and Animal Production, Baskil Vocational School, Fırat University, Elazıg, Türkiye
| | - Solomon Habtemariam
- Pharmacognosy Research and Herbal Analysis Services UK, University of Greenwich, London, Kent, United Kingdom
| | - Zainab M. Almarhoon
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ahmad Faizal Abdull Razis
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, Selangor, Malaysia
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Selangor, Malaysia
| | - Babagana Modu
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Selangor, Malaysia
- Department of Biochemistry, Faculty of Science, University of Maiduguri, Maiduguri, Nigeria
| | | | - Gerardo Leyva-Gómez
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
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3
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Wei K, Zheng X, Zhang H. Recent applications of dioxinone derivatives for macrocyclic natural product and terpenoid synthesis. Front Chem 2022; 10:1030541. [PMID: 36578354 PMCID: PMC9790985 DOI: 10.3389/fchem.2022.1030541] [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: 08/29/2022] [Accepted: 12/01/2022] [Indexed: 12/14/2022] Open
Abstract
Dioxinone derivatives, a class of acetoacetate derivatives, have attracted widespread attention because of their multiple reactive sites, high reactivity, unique chemical properties, and potential synthetic applications. The dioxinone group is also stable under a wide range of reaction conditions, including strong acids, as well as a variety of transition-metal-catalysed processes, such as olefin metathesis and Pd-mediated cross-coupling. The inherent reactivity and diverse applications of dioxinones make them valuable reactive intermediates in organic synthesis. The conversion of dioxinones to acylketenes and their subsequent nucleophilic capture is also an excellent strategy for synthesising β-keto acid derivatives, which can be applied even in complex molecular synthesis. This review focuses on the recent advances in the application of dioxinones in synthetic method research and the total synthesis of natural products, highlighting the exceptional utility of these synthetic methodologies in the construction of macrocyclic cores and terpenoid skeletons. In particular, successful transformations of dioxinone fragments are discussed.
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Affiliation(s)
- Kai Wei
- Henan Engineering Research Center of Funiu Mountain’s Medical Resources Utilization and Molecular Medicine, School of Medical Sciences, Pingdingshan University, Pingdingshan, Henan, China
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research and Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan, China
| | - Xinhua Zheng
- Henan Engineering Research Center of Funiu Mountain’s Medical Resources Utilization and Molecular Medicine, School of Medical Sciences, Pingdingshan University, Pingdingshan, Henan, China
| | - Hongbin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research and Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan, China
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4
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Reddi RN, Sudalai A, Jo C. Studies toward the total synthesis of (+)‐neopeltolide using
N
‐heterocyclic carbene‐catalyzed oxo‐acyloxylation/reductive oxa‐Michael addition strategy. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12604] [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)
- Rambabu N. Reddi
- Chemical Engineering and Process Development Division CSIR‐National Chemical Laboratory Pune Maharashtra India
| | - Arumugam Sudalai
- Chemical Engineering and Process Development Division CSIR‐National Chemical Laboratory Pune Maharashtra India
| | - Changbum Jo
- Department of Chemistry and Chemical Engineering Inha University Michuhol‐gu, Incheon Republic of Korea
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5
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Nakazato K, Oda M, Fuwa H. Total Synthesis of (+)-Neopeltolide by the Macrocyclization/Transannular Pyran Cyclization Strategy. Org Lett 2022; 24:4003-4008. [PMID: 35649194 DOI: 10.1021/acs.orglett.2c01429] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An 11-step synthesis of (+)-neopeltolide was developed. The C1-C7 carboxylic acid and the C8-C16 alcohol were prepared, each in six steps, from (R)- and (S)-epichlorohydrin, respectively. After esterification, our tandem macrocyclization/transannular pyran cyclization strategy was applied to a stereocontrolled construction of the neopeltolide macrolactone. The side chain was synthesized in six steps from ethyl 4-oxazolecarboxylate through palladium-catalyzed cross-couplings. A Mitsunobu reaction of the neopeltolide macrolactone and the side chain completed the synthesis.
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Affiliation(s)
- Kazuki Nakazato
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Mami Oda
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Haruhiko Fuwa
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
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6
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Fuwa H. Total Synthesis of (−)-Exiguolide, a Potent Anticancer Marine Macrolide. HETEROCYCLES 2022. [DOI: 10.3987/rev-22-983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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Chen J, Lv S, Liu J, Yu Y, Wang H, Zhang H. An Overview of Bioactive 1,3-Oxazole-Containing Alkaloids from Marine Organisms. Pharmaceuticals (Basel) 2021; 14:ph14121274. [PMID: 34959674 PMCID: PMC8706051 DOI: 10.3390/ph14121274] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/30/2021] [Accepted: 12/01/2021] [Indexed: 11/20/2022] Open
Abstract
1,3-Oxazole chemicals are a unique class of five-membered monocyclic heteroarenes, containing a nitrogen atom and an oxygen. These alkaloids have attracted extensive attention from medicinal chemists and pharmacologists owing to their diverse arrays of chemical structures and biological activities, and a series of 1,3-oxazole derivatives has been developed into therapeutic agents (e.g., almoxatone, befloxatone, cabotegravir, delpazolid, fenpipalone, haloxazolam, inavolisib). A growing amount of evidence indicates that marine organisms are one of important sources of 1,3-oxazole-containing alkaloids. To improve our knowledge regarding these marine-derived substances, as many as 285 compounds are summarized in this review, which, for the first time, highlights their sources, structural features and biological properties, as well as their biosynthesis and chemical synthesis. Perspective for the future discovery of new 1,3-oxazole compounds from marine organisms is also provided.
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Affiliation(s)
- Jinyun Chen
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China; (J.C.); (S.L.); (J.L.); (H.W.)
| | - Sunyan Lv
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China; (J.C.); (S.L.); (J.L.); (H.W.)
| | - Jia Liu
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China; (J.C.); (S.L.); (J.L.); (H.W.)
| | - Yanlei Yu
- Collaborative Innovation Center of Green Pharmaceutics of Delta Yangzi Region, Zhejiang University of Technology, Hangzhou 310014, China;
| | - Hong Wang
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China; (J.C.); (S.L.); (J.L.); (H.W.)
| | - Huawei Zhang
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China; (J.C.); (S.L.); (J.L.); (H.W.)
- Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou 310014, China
- Correspondence:
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8
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Arbour CA, Imperiali B. Uridine natural products: Challenging targets and inspiration for novel small molecule inhibitors. Bioorg Med Chem 2020; 28:115661. [PMID: 32828427 DOI: 10.1016/j.bmc.2020.115661] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 07/18/2020] [Indexed: 12/16/2022]
Abstract
Nucleoside derivatives, in particular those featuring uridine, are familiar components of the nucleoside family of bioactive natural products. The structural complexity and biological activities of these compounds have inspired research from organic chemistry and chemical biology communities seeking to develop novel approaches to assemble the challenging molecular targets, to gain inspiration for enzyme inhibitor development and to fuel antibiotic discovery efforts. This review will present recent case studies describing the total synthesis and biosynthesis of uridine natural products, and de novo synthetic efforts exploiting features of the natural products to produce simplified scaffolds. This research has culminated in the development of complementary strategies that can lead to effective uridine-based inhibitors and antibiotics. The strengths and challenges of the juxtaposing methods will be illustrated by examining select uridine natural products. Moreover, structure-activity relationships (SAR) for each natural product-inspired scaffold will be discussed, highlighting the impact on inhibitor development, with the aim of future uridine-based small molecule expansion.
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Affiliation(s)
- Christine A Arbour
- Department of Biology and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Barbara Imperiali
- Department of Biology and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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9
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Betori RC, Liu Y, Mishra RK, Cohen SB, Kron SJ, Scheidt KA. Targeted Covalent Inhibition of Telomerase. ACS Chem Biol 2020; 15:706-717. [PMID: 32017522 DOI: 10.1021/acschembio.9b00945] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Telomerase is a ribonuceloprotein complex responsible for maintaining telomeres and protecting chromosomal integrity. The human telomerase reverse transcriptase (hTERT) is expressed in ∼90% of cancer cells where it confers the capacity for limitless proliferation. Along with its established role in telomere lengthening, telomerase also serves noncanonical extra-telomeric roles in oncogenic signaling, resistance to apoptosis, and enhanced DNA damage response. We report a new class of natural-product-inspired covalent inhibitors of telomerase that target the catalytic active site.
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Affiliation(s)
- Rick C. Betori
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Yue Liu
- Ludwig Center for Metastasis Research, The University of Chicago, Chicago, Illinois 60637, United States
| | - Rama K. Mishra
- Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208, United States
| | - Scott B. Cohen
- Children’s Medical Research Institute, University of Sydney, Westmead, New South Wales 2145, Australia
| | - Stephen J. Kron
- Ludwig Center for Metastasis Research, The University of Chicago, Chicago, Illinois 60637, United States
| | - Karl A. Scheidt
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Department of Pharmacology, Northwestern University, Chicago, Illinois 60611, United States
- Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, Illinois 60208, United States
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10
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Yanagi S, Sugai T, Noguchi T, Kawakami M, Sasaki M, Niwa S, Sugimoto A, Fuwa H. Fluorescence-labeled neopeltolide derivatives for subcellular localization imaging. Org Biomol Chem 2020; 17:6771-6776. [PMID: 31259993 DOI: 10.1039/c9ob01276a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Design, synthesis and functional analysis of fluorescent derivatives of neopeltolide, an antiproliferative marine macrolide, are reported herein. Live cell imaging using the fluorescent derivatives showed rapid cellular uptake and localization within the endoplasmic reticulum as well as the mitochondria.
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Affiliation(s)
- Shota Yanagi
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Tomoya Sugai
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan.
| | - Takuma Noguchi
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Masato Kawakami
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Makoto Sasaki
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Shinsuke Niwa
- Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, 6-3 Aramaki Aoba, Aoba-ku, Sendai, Miyagi 980-0845, Japan
| | - Asako Sugimoto
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Haruhiko Fuwa
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan.
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11
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Design and Synthesis of Anti-Cancer Chimera Molecules Based on Marine Natural Products. Mar Drugs 2019; 17:md17090500. [PMID: 31461968 PMCID: PMC6780274 DOI: 10.3390/md17090500] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/07/2019] [Accepted: 08/16/2019] [Indexed: 12/16/2022] Open
Abstract
In this paper, the chemical conjugation of marine natural products with other bioactive molecules for developing an advanced anti-cancer agent is described. Structural complexity and the extraordinary biological features of marine natural products have led to tremendous research in isolation, structural elucidation, synthesis, and pharmacological evaluation. In addition, this basic scientific achievement has made it possible to hybridize two or more biologically important skeletons into a single compound. The hybridization strategy has been used to identify further opportunities to overcome certain limitations, such as structural complexity, scarcity problems, poor solubility, severe toxicity, and weak potency of marine natural products for advanced development in drug discovery. Further, well-designed marine chimera molecules can function as a platform for target discovery or degradation. In this review, the design, synthesis, and biological evaluation of recent marine chimera molecules are presented.
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12
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Zhu XL, Zhang R, Wu QY, Song YJ, Wang YX, Yang JF, Yang GF. Natural Product Neopeltolide as a Cytochrome bc 1 Complex Inhibitor: Mechanism of Action and Structural Modification. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:2774-2781. [PMID: 30794394 DOI: 10.1021/acs.jafc.8b06195] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The marine natural product neopeltolide was isolated from a deep-water sponge specimen of the family Neopeltidae. Neopeltolide has been proven to be a new type of inhibitor of the cytochrome bc1 complex in the mitochondrial respiration chain. However, its detailed inhibition mechanism has remained unknown. In addition, neopeltolide is difficult to synthesize because of its very complex chemical structure. In the present work, the binding mode of neopeltolide was determined for the first time by integrating molecular docking, molecular dynamics simulations, and molecular mechanics Poisson-Boltzmann surface area calculations, which showed that neopeltolide is a Qo site inhibitor of the bc1 complex. Then, according to guidance via inhibitor-protein interaction analysis, structural modification was carried out with the aim to simplify the chemical structure of neopeltolide, leading to the synthesis of a series of new neopeltolide derivatives with much simpler chemical structures. The calculated binding energies (Δ Gcal) of the newly synthesized analogues correlated very well ( R2 = 0.90) with their experimental binding free energies (Δ Gexp), which confirmed that the computational protocol was reliable. Compound 45, bearing a diphenyl ether fragment, was successfully designed and synthesized as the most potent candidate (IC50 = 12 nM) against porcine succinate cytochrome c reductase. The molecular modeling results indicate that compound 45 formed a π-π interaction with Phe274 and two hydrogen bonds with Glu271 and His161. The present work provides a new starting point for future fungicide discovery to overcome the resistance that the existing bc1 complex inhibitors are facing.
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Affiliation(s)
- Xiao-Lei Zhu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
| | - Rui Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
| | - Qiong-You Wu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
| | - Yong-Jun Song
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
| | - Yu-Xia Wang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
| | - Jing-Fang Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
| | - Guang-Fu Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300071 , People's Republic of China
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13
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Zheng K, Hong R. Stereoconfining macrocyclizations in the total synthesis of natural products. Nat Prod Rep 2019; 36:1546-1575. [DOI: 10.1039/c8np00094h] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This review covers selected examples of point chirality-forming macrocyclizations in natural product total synthesis in the past three decades.
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Affiliation(s)
- Kuan Zheng
- Key Laboratory of Synthetic Chemistry of Natural Substances
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Ran Hong
- Key Laboratory of Synthetic Chemistry of Natural Substances
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
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14
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Purushotham Reddy K, Vasudeva Reddy D, Sabitha G. Stereoselective Synthesis of C1-C7 and C6-C22 Fragments of Phostriecin, Goniothalamines, and Their Analogues. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800561] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- K. Purushotham Reddy
- Natural Products Chemistry Division; CSIR - Indian Institute of Chemical Technology; 500 007 Hyderabad India
| | - D. Vasudeva Reddy
- Natural Products Chemistry Division; CSIR - Indian Institute of Chemical Technology; 500 007 Hyderabad India
| | - Gowravaram Sabitha
- Natural Products Chemistry Division; CSIR - Indian Institute of Chemical Technology; 500 007 Hyderabad India
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15
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Larsen EM, Chang CF, Sakata-Kato T, Arico JW, Lombardo VM, Wirth DF, Taylor RE. Conformation-guided analogue design identifies potential antimalarial compounds through inhibition of mitochondrial respiration. Org Biomol Chem 2018; 16:5403-5406. [PMID: 30009295 PMCID: PMC7487978 DOI: 10.1039/c8ob01257a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The synthesis of a 2-methyl-substituted analogue of the natural product, neopeltolide, is reported in an effort to analyze the importance of molecular conformation and ligand-target interactions in relation to biological activity. The methyl substitution was incorporated via highly diastereoselective ester enolate alkylation of a late-stage intermediate. Coupling of the oxazole sidechain provided 2-methyl-neopeltolide and synthetic neopeltolide via total synthesis. The substitution was shown to maintain the conformational preferences of its biologically active parent compound through computer modeling and NMR studies. Both compounds were shown to be potential antimalarial compounds through the inhibition of mitochondrial respiration in P. falciparum parasites.
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Affiliation(s)
- Erik M Larsen
- Department of Chemistry & Biochemistry and the Warren Family Research Center for Drug Discovery, University of Notre Dame, Notre Dame, IN 46556, USA.
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16
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Lee A, Betori RC, Crane EA, Scheidt KA. An Enantioselective Cross-Dehydrogenative Coupling Catalysis Approach to Substituted Tetrahydropyrans. J Am Chem Soc 2018; 140:6212-6216. [PMID: 29714480 PMCID: PMC6052785 DOI: 10.1021/jacs.8b03063] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
An enantioselective cross-dehydrogenative coupling (CDC) reaction to access tetrahydropyrans has been developed. This process combines in situ Lewis acid activation of a nucleophile in concert with the oxidative formation of a transient oxocarbenium electrophile, leading to a productive and highly enantioselective CDC. These advances represent one of the first successful applications of CDC for the enantioselective couplings of unfunctionalized ethers. This system provides efficient access to valuable tetrahydropyran motifs found in many natural products and bioactive small molecules.
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Affiliation(s)
- Ansoo Lee
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Rick C. Betori
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Erika A. Crane
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Karl A. Scheidt
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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17
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Belmonte Sánchez E, Iglesias MJ, el Hajjouji H, Roces L, García-Granda S, Villuendas P, Urriolabeitia EP, López Ortiz F. Cycloaurated Phosphinothioic Amide Complex as a Precursor of Gold(I) Nanoparticles: Efficient Catalysts for A3 Synthesis of Propargylamines under Solvent-Free Conditions. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00102] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Eva Belmonte Sánchez
- Área
de Química Orgánica, Universidad de Almería, Ctra.
Sacramento s/n, 04120 Almería, Spain
| | - María José Iglesias
- Área
de Química Orgánica, Universidad de Almería, Ctra.
Sacramento s/n, 04120 Almería, Spain
| | - Hajar el Hajjouji
- Área
de Química Orgánica, Universidad de Almería, Ctra.
Sacramento s/n, 04120 Almería, Spain
| | - Laura Roces
- Departamento
de Química Física y Analítica, Universidad de Oviedo, C/Julián Clavería 8, 33006 Oviedo, Spain
| | - Santiago García-Granda
- Departamento
de Química Física y Analítica, Universidad de Oviedo, C/Julián Clavería 8, 33006 Oviedo, Spain
| | - Pedro Villuendas
- Instituto
de Síntesis Química y Catálisis Homogénea,
ISQCH, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Esteban P. Urriolabeitia
- Instituto
de Síntesis Química y Catálisis Homogénea,
ISQCH, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Fernando López Ortiz
- Área
de Química Orgánica, Universidad de Almería, Ctra.
Sacramento s/n, 04120 Almería, Spain
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18
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Betori RC, Miller ER, Scheidt KA. A Biocatalytic Route to Highly Enantioenriched β-Hydroxydioxinones. Adv Synth Catal 2017; 359:1131-1137. [PMID: 29104524 PMCID: PMC5663308 DOI: 10.1002/adsc.201700095] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A novel biocatalytic system to access a wide variety of β-hydroxydioxinones from β-ketodioxinones employing commercial engineered ketoreductases has been developed. This practical system provides a remarkably straightforward solution to limitations in accessing certain chemical scaffolds common in β-hydroxydioxinones that are of great interest due to their diversification capabilities. A few highlights of this system are that it is high yielding, highly enantioselective, and chromatography-free. We have demonstrated both a wide substrate scope and a high degree of scalability.
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Affiliation(s)
- Rick C Betori
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
| | - Eric R Miller
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
| | - Karl A Scheidt
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
- Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
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19
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Fuwa H, Sasaki M. Exploiting Ruthenium Carbene-Catalyzed Reactions in Total Synthesis of Marine Oxacyclic Natural Products. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2016. [DOI: 10.1246/bcsj.20160224] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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20
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Feng J, Kasun ZA, Krische MJ. Enantioselective Alcohol C-H Functionalization for Polyketide Construction: Unlocking Redox-Economy and Site-Selectivity for Ideal Chemical Synthesis. J Am Chem Soc 2016; 138:5467-78. [PMID: 27113543 PMCID: PMC4871165 DOI: 10.1021/jacs.6b02019] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The development and application of stereoselective and site-selective catalytic methods that directly convert lower alcohols to higher alcohols are described. These processes merge the characteristics of transfer hydrogenation and carbonyl addition, exploiting alcohols and π-unsaturated reactants as redox pairs, which upon hydrogen transfer generate transient carbonyl-organometal pairs en route to products of C-C coupling. Unlike classical carbonyl additions, stoichiometric organometallic reagents and discrete alcohol-to-carbonyl redox reactions are not required. Additionally, due to a kinetic preference for primary alcohol dehydrogenation, the site-selective modification of glycols and higher polyols is possible, streamlining or eliminating use of protecting groups. The total syntheses of several iconic type I polyketide natural products were undertaken using these methods. In each case, the target compounds were prepared in significantly fewer steps than previously achieved.
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Affiliation(s)
- Jiajie Feng
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
| | - Zachary A. Kasun
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry, Austin, TX 78712, USA
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21
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Fuwa H. Contemporary Strategies for the Synthesis of Tetrahydropyran Derivatives: Application to Total Synthesis of Neopeltolide, a Marine Macrolide Natural Product. Mar Drugs 2016; 14:E65. [PMID: 27023567 PMCID: PMC4849069 DOI: 10.3390/md14040065] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 03/15/2016] [Accepted: 03/17/2016] [Indexed: 02/07/2023] Open
Abstract
Tetrahydropyrans are structural motifs that are abundantly present in a range of biologically important marine natural products. As such, significant efforts have been paid to the development of efficient and versatile methods for the synthesis of tetrahydropyran derivatives. Neopeltolide, a potent antiproliferative marine natural product, has been an attractive target compound for synthetic chemists because of its complex structure comprised of a 14-membered macrolactone embedded with a tetrahydropyran ring, and twenty total and formal syntheses of this natural product have been reported so far. This review summarizes the total and formal syntheses of neopeltolide and its analogues, highlighting the synthetic strategies exploited for constructing the tetrahydropyran ring.
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Affiliation(s)
- Haruhiko Fuwa
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
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22
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Hari TPA, Wilke BI, Davey JA, Boddy CN. Diastereoseletive Transannular Oxa-Conjugate Addition Generates the 2,6-cis-Disubstituted Tetrahydropyran of Neopeltolide. J Org Chem 2015; 81:415-23. [PMID: 26675500 DOI: 10.1021/acs.joc.5b02014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Transannular 2,6-disubstituted pyrans, like the one found in the cytotoxic marine natural product neopeltolide, are a key functional group in many polyketides. While oxa-conjugate additions have been shown to provide direct and rapid access to tetrahydropyrans in acyclic neopeltolide intermediates, a transannular strategy for construction of this ring system in a macrocyclic core has not been investigated. In this study, we demonstrate that a transannular oxa-conjugate addition strategy is a viable approach to the construction of the bicyclic core of neopeltolide. We show that transannular addition occurs readily with an α,β-unsaturated ketone as the Michael acceptor and does not occur when an α,β-unsaturated ester is the Michael acceptor. Our data indicates that oxa-conjugate addition is reversible and that the stereochemical outcome can be under thermodynamic control. Using computational chemistry, we show that the lowest energy diastereomer is the desired cis-pyran found in neopeltolide, and we experimentally demonstrate that the trans and cis diastereomers are interconvertible under reaction conditions with the cis-pyran product predominating. This oxa-conjugate addition strategy should provide a viable route to accessing the fully elaborated macrocyclic core of neopeltolide.
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Affiliation(s)
- Taylor P A Hari
- Department of Chemistry & Biomolecular Sciences, University of Ottawa , Ottawa, Ontario, Canada K1N 6N5
| | - Burkardt I Wilke
- Department of Chemistry, Syracuse University , Syracuse, New York 13244, United States
| | - James A Davey
- Department of Chemistry & Biomolecular Sciences, University of Ottawa , Ottawa, Ontario, Canada K1N 6N5
| | - Christopher N Boddy
- Department of Chemistry & Biomolecular Sciences, University of Ottawa , Ottawa, Ontario, Canada K1N 6N5
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23
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Mineeva IV. New approach to the synthesis of macrocyclic core of cytotoxic lactone (+)-neopeltolide. Synthesis of C7–C14 segment basing on cyclopropanol intermediates. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2015. [DOI: 10.1134/s1070428015080023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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McDonald BR, Scheidt KA. Pyranone natural products as inspirations for catalytic reaction discovery and development. Acc Chem Res 2015; 48:1172-83. [PMID: 25742935 DOI: 10.1021/ar5004576] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Natural products continue to provide a wealth of opportunities in the areas of chemical and therapeutic development. These structures are effective measuring sticks for the current state of chemical synthesis as a field and constantly inspire new approaches and strategies. Tetrahydropryans and tetrahydropyran-4-ones are found in numerous bioactive marine natural products and medicinal compounds. Our interest in exploring the therapeutic potential of natural products containing these motifs provided the impetus to explore new methods to access highly functionalized, chiral pyran molecules in the most direct and rapid fashion possible. This goal led to exploration and development of a Lewis acid-mediated Prins reaction between a chiral β-hydroxy-dioxinone and aldehyde to produce a pyran-dioxinone fused product that can be processed in a single pot operation to the desired tetrahydropyran-4-ones in excellent yield and stereoselectivity. Although the Prins reaction is a commonly employed approach toward pyrans, this method uniquely provides a 3-carboxy-trisubstituted pyran and utilizes dioxinones in a manner that was underexplored at the time. The 3-carboxy substituent served as a key synthetic handhold when this method was applied to the synthesis of highly functionalized pyrans within the macrocyclic natural products neopeltolide, okilactiomycin, and exiguolide. When employed in challenging macrocyclizations, this tetrahydropyranone forming reaction proved highly stereoselective and robust. Another major thrust in our lab has been the synthesis of benzopyranone natural products, specifically flavonoids, because this broad and diverse family of compounds possesses an equally broad range of biological and medicinal applications. With the goal of developing a broad platform toward the synthesis of enantioenriched flavonoid analogs and natural products, a biomimetic, asymmetric catalytic approach toward the synthesis of 2-aryl benzopyranones was developed. A bifunctional hydrogen bonding/Brønstead base catalyst was ultimately found to enable this transformation in analogous manner to the biosynthesis via the enzyme chalcone isomerase. Employing thiourea catalysts derived from the pseudoenantiomeric quinine and quinidine, alkylidene β-ketoesters can be isomerized to 3-carboxy flavanones and decarboxylated in a single pot operation to stereodivergently provide highly enantioenriched flavanones in excellent yield. This method was applied to the synthesis of the abyssinone family of natural products, as well as the rotenoid, deguelin. An analogous method to isomerize chalcones was developed and applied to the synthesis of isosilybin A. In both of these related endeavors, the need for novel enabling methodologies toward the efficient creation of targeted molecular complexity drove the discovery, development and deployment of these stereoselective catalytic transformations.
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Affiliation(s)
- Benjamin R. McDonald
- Department
of Chemistry,
Department of Pharmacology, and Center for Molecular Innovation and
Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Karl A. Scheidt
- Department
of Chemistry,
Department of Pharmacology, and Center for Molecular Innovation and
Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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25
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Bai Y, Dai M. Strategies and Methods for the Synthesis of Anticancer Natural Product Neopeltolide and its Analogs. CURR ORG CHEM 2015; 19:871-885. [PMID: 27182194 PMCID: PMC4863658 DOI: 10.2174/1385272819666150119225149] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Neopeltolide, isolated in 2007, with its novel structural features and potent anti cancer cell proliferation activity, has attracted a tremendous amount of synthetic efforts. This review briefly and chronologically summarizes each of the synthesis with the main focus on the strategies and methodologies for the construction of its cis-tetrahydropyran-containing macrolactone core.
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Affiliation(s)
- Yu Bai
- Department of Chemistry and Center for Cancer Research, Purdue University, 720 Clinic Drive, West Lafayette, IN 47907, USA
| | - Mingji Dai
- Department of Chemistry and Center for Cancer Research, Purdue University, 720 Clinic Drive, West Lafayette, IN 47907, USA
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26
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Abstract
In this article strategies for the design and synthesis of natural product analogues are summarized and illustrated with some selected examples.
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Affiliation(s)
- Martin E. Maier
- Institut für Organische Chemie
- Eberhard Karls Universität Tübingen
- 72076 Tübingen
- Germany
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27
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Doi R, Shibuya M, Murayama T, Yamamoto Y, Iwabuchi Y. Development of an Azanoradamantane-Type Nitroxyl Radical Catalyst for Class-Selective Oxidation of Alcohols. J Org Chem 2014; 80:401-13. [DOI: 10.1021/jo502426p] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Ryusuke Doi
- Department
of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama
6-3, Sendai 980-8578, Japan
| | - Masatoshi Shibuya
- Department
of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
| | - Tsukasa Murayama
- Department
of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
| | - Yoshihiko Yamamoto
- Department
of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan
| | - Yoshiharu Iwabuchi
- Department
of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama
6-3, Sendai 980-8578, Japan
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28
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Fuwa H, Sato M, Sasaki M. Programmed cell death induced by (-)-8,9-dehydroneopeltolide in human promyelocytic leukemia HL-60 cells under energy stress conditions. Mar Drugs 2014; 12:5576-89. [PMID: 25419998 PMCID: PMC4245546 DOI: 10.3390/md12115576] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 11/05/2014] [Accepted: 11/07/2014] [Indexed: 12/30/2022] Open
Abstract
(+)-Neopeltolide is a marine macrolide natural product that exhibits potent antiproliferative activity against several human cancer cell lines. Previous study has established that this natural product primarily targets the complex III of the mitochondrial electron transport chain. However, the biochemical mode-of-actions of neopeltolide have not been investigated in detail. Here we report that (-)-8,9-dehydroneopeltolide (8,9-DNP), a more accessible synthetic analogue, shows potent cytotoxicity against human promyelocytic leukemia HL-60 cells preferentially under energy stress conditions. Nuclear morphology analysis, as well as DNA ladder assay, indicated that 8,9-DNP induced significant nuclear condensation/fragmentation and DNA fragmentation, and these events could be suppressed by preincubating the cells with a pan-caspase inhibitor, N-benzyloxycarbonyl-Val-Ala-Asp(OMe)-fluoromethylketone (zVAD). Immunoblot analysis demonstrated the release of cytochrome c from the mitochondria and the cleavage of full-length caspase-3 and poly(ADP-ribose) polymerase (PARP). These results indicated that 8,9-DNP induced caspase-dependent apoptotic programmed cell death under energy stress conditions. It was also found that 8,9-DNP induced non-apoptotic cell death in the presence/absence of zVAD under energy stress conditions. Immunoblot analysis showed the intracytosolic release of apoptosis-inducing factor (AIF), although it did not further translocate to the nucleus. It appears most likely that, in the presence of zVAD, 8,9-DNP triggered necrotic cell death as a result of severe intracellular ATP depletion.
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Affiliation(s)
- Haruhiko Fuwa
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
| | - Mizuho Sato
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
| | - Makoto Sasaki
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
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29
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Tang W, Liu S, Degen D, Ebright RH, Prusov EV. Synthesis and evaluation of novel analogues of ripostatins. Chemistry 2014; 20:12310-9. [PMID: 25112727 DOI: 10.1002/chem.201403176] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Indexed: 11/08/2022]
Abstract
Ripostatins are polyene macrolactones isolated from the myxobacterium Sorangium cellulosum. They exhibit antibiotic activity by inhibiting bacterial RNA polymerase (RNAP) through a binding site and mechanism that are different from those of current antibacterial drugs. Thus, the ripostatins serve as starting points for the development of new anti-infective agents with a novel mode of action. In this work, several derivatives of ripostatins were produced. 15-Desoxyripostatin A was synthesized by using a one-pot carboalumination/cross-coupling. 5,6-Dihydroripostatin A was constructed by utilizing an intramolecular Suzuki cross-coupling macrolactonization approach. 14,14'-Difluororipostatin A and both epimeric 14,14'-difluororipostatins B were synthesized by using a Reformatsky type aldol addition of a haloketone, Stille cross-coupling, and ring-closing metathesis. The RNAP-inhibitory and antibacterial activities are presented. Structure-activity relationships indicate that the monocyclic keto-ol form of ripostatin A is the active form of ripostatin A, that the ripostatin C5-C6 unsaturation is important for activity, and that C14 geminal difluorination of ripostatin B results in no loss of activity.
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Affiliation(s)
- Wufeng Tang
- Helmholtz-Zentrum für Infektionsforschung (HZI), Inhoffenstrasse 7, 38124 Braunschweig (Germany), Fax: (+49) 0531-6181-9499
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30
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Bai Y, Davis DC, Dai M. Synthesis of Tetrahydropyran/Tetrahydrofuran‐Containing Macrolides by Palladium‐Catalyzed Alkoxycarbonylative Macrolactonizations. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yu Bai
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907 (USA) http://www.chem.purdue.edu/dai/
| | - Dexter C. Davis
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907 (USA) http://www.chem.purdue.edu/dai/
| | - Mingji Dai
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907 (USA) http://www.chem.purdue.edu/dai/
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31
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Bai Y, Davis DC, Dai M. Synthesis of tetrahydropyran/tetrahydrofuran-containing macrolides by palladium-catalyzed alkoxycarbonylative macrolactonizations. Angew Chem Int Ed Engl 2014; 53:6519-22. [PMID: 24825410 DOI: 10.1002/anie.201403006] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Indexed: 11/08/2022]
Abstract
A novel Pd-catalyzed cascade alkoxycarbonylative macrolactonization to construct tetrahydropyran/tetrahydrofuran-containing bridged macrolactones in one step from alkendiols is described. Products with various ring sizes and substituents were obtained. Challenging macrolactones involving tertiary alcohols were synthesized smoothly as well. Mechanistically, experimental evidence to support a trans-oxypalladation step has been provided. The method was applied to the synthesis of potent anticancer compound 9-demethylneopeltolide.
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Affiliation(s)
- Yu Bai
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907 (USA) http://www.chem.purdue.edu/dai/
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32
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Fuwa H, Noguchi T, Kawakami M, Sasaki M. Synthesis and biological evaluation of (+)-neopeltolide analogues: importance of the oxazole-containing side chain. Bioorg Med Chem Lett 2014; 24:2415-9. [PMID: 24792465 DOI: 10.1016/j.bmcl.2014.04.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 04/08/2014] [Accepted: 04/09/2014] [Indexed: 12/22/2022]
Abstract
We describe the synthesis and biological evaluation of (+)-neopeltolide analogues with structural modifications in the oxazole-containing side chain. Evaluation of the antiproliferative activity of newly synthesized analogues against A549 human lung adenocarcinoma cells and PANC-1 human pancreatic carcinoma cells have shown that the C19-C20 and C26-C27 double bonds within the oxazole-containing side chain and the terminal methyl carbamate group are essential for potent activity.
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Affiliation(s)
- Haruhiko Fuwa
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
| | - Takuma Noguchi
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Masato Kawakami
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Makoto Sasaki
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
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33
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Asymmetric reduction of 2,2-dimethyl-6-(2-oxoalkyl/oxoaryl)-1,3-dioxin-4-ones and application to the synthesis of (+)-yashabushitriol. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.10.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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34
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Lombardo VM, Thomas CD, Scheidt KA. A Tandem Isomerization/Prins Strategy: Iridium(III)/Brønsted Acid Cooperative Catalysis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201306462] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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35
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Lombardo VM, Thomas CD, Scheidt KA. A tandem isomerization/prins strategy: iridium(III)/Brønsted acid cooperative catalysis. Angew Chem Int Ed Engl 2013; 52:12910-4. [PMID: 24218144 DOI: 10.1002/anie.201306462] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Indexed: 02/03/2023]
Abstract
Working together: A mild and efficient isomerization/protonation sequence generates pyran-fused indoles by cooperative catalysis between cationic iridium(III) and Bi(OTf)3 . Three distinct cyclization manifolds lead to the corresponding bioactive scaffolds in good yields. In addition, N-substituted indoles can be synthesized enantioselectively in the presence of a chiral phosphate.
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Affiliation(s)
- Vince M Lombardo
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Chicago Tri-Institutional Center for Chemical Methods and Library Development (CT-CMLD), Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (USA)
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36
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Ghosh AK, Shurrush KA, Dawson ZL. Enantioselective total synthesis of macrolide (+)-neopeltolide. Org Biomol Chem 2013; 11:7768-77. [PMID: 24121457 DOI: 10.1039/c3ob41541d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The asymmetric total synthesis of the anti-proliferative macrolide (+)-neopeltolide has been completed. The stereochemically defined trisubstituted tetrahydropyran ring was constructed via a catalytic hetero-Diels-Alder reaction creating two new chiral centers in a highly diastereoselective manner. The other key features of this synthesis included Brown's asymmetric allylation to install the requisite C-11 and C-13 stereocenters. The synthesis of the oxazole side chain consisted of a hydrozirconation of an alkynyl stannane to establish the Z stereochemistry, followed by a palladium catalyzed cross coupling to introduce the desired Z olefin in the oxazole side chain.
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Affiliation(s)
- Arun K Ghosh
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana, USA.
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37
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Wender PA, Billingsley KL. Lead Diversification through a Prins-Driven Macrocyclization Strategy: Application to C13-Diversified Bryostatin Analogues. SYNTHESIS-STUTTGART 2013; 45:1815-1824. [PMID: 24672140 DOI: 10.1055/s-0033-1338860] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The design, synthesis, and biological evaluation of a novel class of C13-diversified bryostatin analogues are described. An innovative and general strategy based on a Prins macrocyclization-nucleophilic trapping cascade was used to achieve late-stage diversification. In vitro analysis of selected library members revealed that modification at the C13 position of the bryostatin scaffold can be used as a diversification handle to regulate biological activity.
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Affiliation(s)
- Paul A Wender
- Department of Chemistry, Department of Chemical and Systems Biology, Stanford University, Stanford, CA 94305-5080, USA, Fax +1(650)7250259
| | - Kelvin L Billingsley
- Department of Radiology, Stanford University School of Medicine, Stanford, CA 94305-5105, USA
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Fuwa H, Kawakami M, Noto K, Muto T, Suga Y, Konoki K, Yotsu-Yamashita M, Sasaki M. Concise synthesis and biological assessment of (+)-neopeltolide and a 16-member stereoisomer library of 8,9-dehydroneopeltolide: identification of pharmacophoric elements. Chemistry 2013; 19:8100-10. [PMID: 23606326 DOI: 10.1002/chem.201300664] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Indexed: 02/01/2023]
Abstract
We describe herein a concise synthesis of (+)-neopeltolide, a marine macrolide natural product that elicits a highly potent antiproliferative activity against several human cancer cell lines. Our synthesis exploited the powerful bond-forming ability and high functional group compatibility of olefin metathesis and esterification reactions to minimize manipulations of oxygen functionalities and to maximize synthetic convergency. Our findings include a chemoselective olefin cross-metathesis reaction directed by H-bonding, and a ring-closing metathesis conducted under non-high dilution conditions. Moreover, we developed a 16-member stereoisomer library of 8,9-dehydroneopeltolide to systematically explore the stereostructure-activity relationships. Assessment of the antiproliferative activity of the stereoisomers against A549 human lung adenocarcinoma, MCF-7 human breast adenocarcinoma, HT-1080 human fibrosarcoma, and P388 murine leukemia cell lines has revealed marked differences in potency between the stereoisomers. This study provides comprehensive insights into the structure-activity relationship of this important antiproliferative agent, leading to the identification of the pharmacophoric structural elements and the development of truncated analogues with nanomolar potency.
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Affiliation(s)
- Haruhiko Fuwa
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
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40
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Han X, Peh G, Floreancig PE. Prins-Type Cyclization Reactions in Natural Product Synthesis. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201557] [Citation(s) in RCA: 163] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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41
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Ogawa Y, Painter PP, Tantillo DJ, Wender PA. Mechanistic and computational studies of exocyclic stereocontrol in the synthesis of bryostatin-like cis-2,6-disubstituted 4-alkylidenetetrahydropyrans by Prins cyclization. J Org Chem 2012; 78:104-15. [PMID: 23121542 DOI: 10.1021/jo301953h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Prins cyclization of syn-β-hydroxy allylsilanes and aldehydes gives cis-2,6-disubstituted 4-alkylidenetetrahydropyrans as sole products in excellent yields regardless of the aldehyde (R″) or syn-β-hydroxy allylsilane substituent (R') used. By reversing the R″ and R' groups, complementary exocyclic stereocontrol can be achieved. When the anti-β-hydroxy allylsilanes are used, the Prins cyclization gives predominantly cis-2,6-disubstituted 4-alkylidenetetrahydropyrans, now with the opposite olefin geometry in excellent yield. The proposed reaction mechanism and the observed stereoselectivity for these processes are supported by DFT calculations.
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Affiliation(s)
- Yasuyuki Ogawa
- Department of Chemistry, University of California, Davis, California 95616, United States
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Athe S, Chandrasekhar B, Roy S, Pradhan TK, Ghosh S. Formal Total Synthesis of (+)-Neopeltolide. J Org Chem 2012; 77:9840-5. [DOI: 10.1021/jo301425c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sudhakar Athe
- CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | | | - Saumya Roy
- CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | | | - Subhash Ghosh
- CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
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Cui J, Chai DI, Miller C, Hao J, Thomas C, Wang J, Scheidt KA, Kozmin SA. Assembly of four diverse heterocyclic libraries enabled by Prins cyclization, Au-catalyzed enyne cycloisomerization, and automated amide synthesis. J Org Chem 2012; 77:7435-70. [PMID: 22860634 DOI: 10.1021/jo301061r] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We describe a unified synthetic strategy for efficient assembly of four new heterocyclic libraries. The synthesis began by creating a range of structurally diverse pyrrolidinones or piperidinones. Such compounds were obtained in a simple one-flask operation starting with readily available amines, ketoesters, and unsaturated anhydrides. The use of tetrahydropyran-containing ketoesters, which were rapidly assembled by our Prins cyclization protocol, enabled efficient fusion of pyran and piperidinone cores. A newly developed Au(I)-catalyzed cycloisomerization of alkyne-containing enamides further expanded heterocyclic diversity by providing rapid entry into a wide range of bicyclic and tricyclic dienamides. The final stage of the process entailed diversification of each of the initially produced carboxylic acids using a fully automated platform for amide synthesis, which delivered 1872 compounds in high diastereomeric and chemical purity.
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Affiliation(s)
- Jiayue Cui
- Chicago Tri-Institutional Center for Chemical Methods and Library Development, Department of Chemistry, University of Chicago, Chicago, Illinois 60637, USA
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Affiliation(s)
- Wufeng Tang
- Helmholtz Centre for Infection Research, Inhoffenstr. 7, D-38124 Braunschweig, Germany
| | - Evgeny V. Prusov
- Helmholtz Centre for Infection Research, Inhoffenstr. 7, D-38124 Braunschweig, Germany
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Raghavan S, Samanta PK. Stereoselective synthesis of the macrolactone core of (+)-neopeltolide. Org Lett 2012; 14:2346-9. [PMID: 22515229 DOI: 10.1021/ol3007698] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A stereoselective synthesis of the macrolactone core of the potent anticancer agent neopeltolide is disclosed. The key steps of the synthesis include asymmetric allylation using Krische' protocol, conjugate reduction using MacMillan's methodology, and an asymmetric hetero-Diels-Alder reaction using Jacobsen's catalyst. Substrate controlled diastereoselective 1,3-anti reduction of a keto alcohol, Luche reduction followed by Ireland-Claisen rearrangement, oxymercuration, and reductive lithiation are other key steps.
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Affiliation(s)
- Sadagopan Raghavan
- Natural Product Chemistry, Indian Institute of Chemical Technology, Hyderabad 500007, India.
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46
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Cui Y, Balachandran R, Day BW, Floreancig PE. Synthesis and biological evaluation of neopeltolide and analogs. J Org Chem 2012; 77:2225-35. [PMID: 22329423 PMCID: PMC3308185 DOI: 10.1021/jo2023685] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of neopeltolide analogues that contain variations in the oxazole-containing side chain and in the macrolide core are reported along with the GI(50) values for these compounds against MCF-7, HCT-116, and p53 knockout HCT-116 cell lines. Although biological activity is sensitive to changes in the macrocycle and the side chain, several analogues displayed GI(50) values of <25 nM. Neopeltolide and several of the more potent analogues were significantly less potent against p53 knockout cells, suggesting that p53 plays an auxiliary role in the activity of these compounds.
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Affiliation(s)
- Yubo Cui
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Raghavan Balachandran
- Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Billy W. Day
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
- Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Paul E. Floreancig
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
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Tang W, Prusov EV. Total synthesis of RNA-polymerase inhibitor ripostatin B and 15-deoxyripostatin A. Angew Chem Int Ed Engl 2012; 51:3401-4. [PMID: 22378642 DOI: 10.1002/anie.201108749] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 01/17/2012] [Indexed: 11/08/2022]
Abstract
Keep me skipped: a highly convergent total synthesis of ripostatin B, an inhibitor of the bacterial RNA polymerase, is described. The key steps to construct and avoid isomerization of the skipped triene are a double Stille cross-coupling reaction and a ring-closing metathesis. Furthermore, 15-deoxyripostatin A, a stable and conformationally locked analogue of ripostatin A, was prepared and tested in vivo.
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Affiliation(s)
- Wufeng Tang
- Department of Medicinal Chemistry, Helmholtz Centre for Infection Research, Braunschweig, Germany
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Tang W, Prusov EV. Total Synthesis of RNA-Polymerase Inhibitor Ripostatin B and 15-Deoxyripostatin A. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108749] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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49
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Fuwa H. Total Synthesis of Tetrahydropyran-Containing Natural Products Exploiting Intramolecular Oxa-Conjugate Cyclization. HETEROCYCLES 2012. [DOI: 10.3987/rev-12-730] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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50
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Sharma GVM, Reddy SV, Ramakrishna KVS. Synthesis of the macrolactone core of (+)-neopeltolide by transannular cyclization. Org Biomol Chem 2012; 10:3689-95. [DOI: 10.1039/c2ob25151e] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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