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Liu H, Yuan W, Ran MY, Wei G, Zhao Y, Liao ZQ, Liang H, Chen ZF, Wang FX. Total Synthesis of Quebrachamine and Kopsiyunnanine D. J Org Chem 2024; 89:5905-5910. [PMID: 38579179 DOI: 10.1021/acs.joc.4c00363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2024]
Abstract
The total syntheses of (±)-quebrachamine and (±)-kopsiyunnanine D are reported. Key transformations include an intermolecular Horner-Wadsworth-Emmons olefination to merge the two fragments convergently and an intramolecular Mitsunobu reaction to introduce the synthetically challenging nine-membered azonane ring efficiently.
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Affiliation(s)
- Hui Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Wei Yuan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Meng-Yan Ran
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Gang Wei
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Yi Zhao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Zhi-Qiang Liao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Hong Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Zhen-Feng Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Fang-Xin Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China) & Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
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Garg Y, Osborne J, Vasylevskyi S, Velmurugan N, Tanaka F. 1,3-Diamine-Derived Catalysts: Design, Synthesis, and the Use in Enantioselective Mannich Reactions of Ketones. J Org Chem 2023; 88:11096-11101. [PMID: 37460110 PMCID: PMC10407930 DOI: 10.1021/acs.joc.3c01051] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Indexed: 08/05/2023]
Abstract
1,3-Diamine-derived catalysts were designed, synthesized, and used in asymmetric Mannich reactions of ketones. The reactions catalyzed by one of the 1,3-diamine derivatives in the presence of acids afforded the Mannich products with high enantioselectivities under mild conditions. In most cases, bond formation occurred at the less-substituted α-position of the ketone carbonyl group. Our results indicate that the primary and the tertiary amines of the 1,3-diamine derivative cooperatively act for the catalysis.
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Affiliation(s)
- Yuvraj Garg
- Chemistry
and Chemical Bioengineering Unit, Okinawa
Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna, Okinawa 904-0495, Japan
| | - James Osborne
- Chemistry
and Chemical Bioengineering Unit, Okinawa
Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna, Okinawa 904-0495, Japan
| | - Serhii Vasylevskyi
- Research
Support Division, Okinawa Institute of Science
and Technology Graduate University, 1919-1 Tancha, Onna, Okinawa 904-0495, Japan
| | - Nivedha Velmurugan
- Chemistry
and Chemical Bioengineering Unit, Okinawa
Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna, Okinawa 904-0495, Japan
| | - Fujie Tanaka
- Chemistry
and Chemical Bioengineering Unit, Okinawa
Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna, Okinawa 904-0495, Japan
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3
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Unsworth WP, Stephens TC. Strategies for the Synthesis of Heterocyclic Macrocycles and Medium‐Sized Rings. HETEROCYCLES 2022. [DOI: 10.1002/9783527832002.ch3] [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: 11/10/2022]
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4
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Choudhury R, Reddy DS. Total Synthesis of a Hypothetical Macroketone of Migrastatin. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100484] [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)
- Rahul Choudhury
- Organic Chemistry Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - D. Srinivasa Reddy
- Organic Chemistry Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
- CSIR-Indian Institute of Integrated Medicine Canal Road Jammu 180001 India
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5
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Wu ZC, Boger DL. The quest for supernatural products: the impact of total synthesis in complex natural products medicinal chemistry. Nat Prod Rep 2020; 37:1511-1531. [PMID: 33169762 PMCID: PMC7678878 DOI: 10.1039/d0np00060d] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Covering: 2000 up to 2020This review presents select recent advances in the medicinal chemistry of complex natural products that are prepared by total synthesis. The underlying studies highlight enabling divergent synthetic strategies and methods that permit the systematic medicinal chemistry studies of key analogues bearing deep-seated structural changes not readily accessible by semisynthetic or biosynthetic means. Select and recent examples are detailed where the key structural changes are designed to improve defined properties or to overcome an intrinsic limitation of the natural product itself. In the examples presented, the synthetic efforts provided supernatural products, a term first introduced by our colleague Ryan Shenvi (Synlett, 2016, 27, 1145-1164), with properties superseding the parent natural product. The design principles and approaches for creating the supernatural products are highlighted with an emphasis on the properties addressed that include those that improve activity or potency, increase selectivity, enhance durability, broaden the spectrum of activity, improve chemical or metabolic stability, overcome limiting physical properties, add mechanisms of action, enhance PK properties, overcome drug resistance, and/or improve in vivo efficacy. Some such improvements may be regarded by some as iterative enhancements whereas others, we believe, truly live up to their characterization as supernatural products. Most such efforts are also accompanied by advances in synthetic organic chemistry, inspiring the development of new synthetic methodology and providing supernatural products with improved synthetic accessibility.
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Affiliation(s)
- Zhi-Chen Wu
- Department of Chemistry, The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA.
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6
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Abstract
Natural products (NPs) are important sources of clinical drugs due to their structural diversity and biological prevalidation. However, the structural complexity of NPs leads to synthetic difficulties, unfavorable pharmacokinetic profiles, and poor drug-likeness. Structural simplification by truncating unnecessary substructures is a powerful strategy for overcoming these limitations and improving the efficiency and success rate of NP-based drug development. Herein, we will provide a comprehensive review of the structural simplification of NPs with a focus on design strategies, case studies, and new technologies. In particular, a number of successful examples leading to marketed drugs or drug candidates will be discussed in detail to illustrate how structural simplification is applied in lead optimization of NPs.
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Affiliation(s)
- Shengzheng Wang
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai , 200433 , P.R. China.,Department of Medicinal Chemistry, School of Pharmacy , Fourth Military Medical University , 169 Changle West Road , Xi'an , 710032 , P.R. China
| | - Guoqiang Dong
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai , 200433 , P.R. China
| | - Chunquan Sheng
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai , 200433 , P.R. China
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7
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Moore AF, Newman DJ, Ranganathan S, Liu F. Imaginative Order from Reasonable Chaos: Conformation-Driven Activity and Reactivity in Exploring Protein–Ligand Interactions. Aust J Chem 2018. [DOI: 10.1071/ch18416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Sir Derek Barton’s seminal work on steroid conformational analysis opened up a new era of enquiry into how the preferred conformation of any molecule could have profound effects on its physical–chemical properties and activities. Conformation-based effects on molecular activity and reactivity continue to manifest, with one key area of investigation currently focussed on conformational entropy in driving protein–ligand interactions. Carrying on from Barton’s initial insight on natural product conformational properties, new questions now address how conformational flexibility within a bioactive natural product structural framework (reasonable chaos), can be directed to confer dynamically new protein–ligand interactions beyond the basic lock–key model (imaginative order). Here we summarise our work on exploring conformational diversity from fluorinated natural product fragments, and how this approach of conformation-coupled diversity-oriented synthesis can be used to iteratively derive ligands with enhanced specificity against highly homologous protein domains. Our results demonstrate that the conformation entropic states of highly conserved protein domains differ significantly, and this conformational diversity, beyond primary sequence analysis, can be duly captured and exploited by natural-product derived ligands with complementary conformational dynamics for enhancing recognition specificity in drug lead discovery.
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9
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Giralt E, Lo Re D. The Therapeutic Potential of Migrastatin-Core Analogs for the Treatment of Metastatic Cancer. Molecules 2017; 22:molecules22020198. [PMID: 28208778 PMCID: PMC6155687 DOI: 10.3390/molecules22020198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 01/25/2017] [Accepted: 02/02/2017] [Indexed: 01/30/2023] Open
Abstract
Tumor metastasis is a complex process in which cells detach from the primary tumor and colonize a distant organ. Metastasis is also the main process responsible for cancer-related death. Despite the enormous efforts made to unravel the metastatic process, there is no effective therapy, and patients with metastatic tumors have poor prognosis. In this regard, there is an urgent need for new therapeutic tools for the treatment of this disease. Small molecules with the capacity to reduce cell migration could be used to treat metastasis. Migrastatin-core analogs are naturally inspired macrocycles that inhibit pathological cell migration and are able to reduce metastasis in animal models. Migrastatin analogs can be synthesized from a common advanced intermediate. Herein we present a review of the synthetic approaches that can be used to prepare this key intermediate, together with a review of the biological activity of migrastatin-core analogs and current hypotheses concerning their mechanism of action.
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Affiliation(s)
- Ernest Giralt
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, C/Baldiri Reixac 10, Barcelona E-08028, Spain.
- Department of Organic Chemistry, University of Barcelona, Marti i Franques 1-11, Barcelona E-08028, Spain.
| | - Daniele Lo Re
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, C/Baldiri Reixac 10, Barcelona E-08028, Spain.
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10
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Vannam R, Peczuh MW. A practical and scalable synthesis of carbohydrate based oxepines. Org Biomol Chem 2016; 14:3989-96. [PMID: 27056249 DOI: 10.1039/c6ob00262e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient, seven-step synthesis of carbohydrate based oxepines is reported using per-O-acetyl septanoses as key intermediates. The scope of the synthesis was evaluated by varying both the pyranose starting materials and protecting groups incorporated into the oxepine products. The practicality of the method make it amenable to scale up as demonstrated by the gram-scale synthesis of the d-glucose derived oxepine.
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Affiliation(s)
- Raghu Vannam
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, U-3060, Storrs, CT 06269, USA.
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11
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Crane EA, Gademann K. Synthetisch gewonnene Naturstofffragmente in der Wirkstoffentwicklung. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201505863] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Erika A. Crane
- Departement Chemie; Universität Basel; St. Johanns-Ring 19 CH-4056 Basel Schweiz
| | - Karl Gademann
- Departement Chemie; Universität Basel; St. Johanns-Ring 19 CH-4056 Basel Schweiz
- Institut für Chemie; Universität Zürich; Winterthurerstrasse 190 CH-8057 Zürich Schweiz
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12
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Crane EA, Gademann K. Capturing Biological Activity in Natural Product Fragments by Chemical Synthesis. Angew Chem Int Ed Engl 2016; 55:3882-902. [PMID: 26833854 PMCID: PMC4797711 DOI: 10.1002/anie.201505863] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Indexed: 12/22/2022]
Abstract
Natural products have had an immense influence on science and have directly led to the introduction of many drugs. Organic chemistry, and its unique ability to tailor natural products through synthesis, provides an extraordinary approach to unlock the full potential of natural products. In this Review, an approach based on natural product derived fragments is presented that can successfully address some of the current challenges in drug discovery. These fragments often display significantly reduced molecular weights, reduced structural complexity, a reduced number of synthetic steps, while retaining or even improving key biological parameters such as potency or selectivity. Examples from various stages of the drug development process up to the clinic are presented. In addition, this process can be leveraged by recent developments such as genome mining, antibody–drug conjugates, and computational approaches. All these concepts have the potential to identify the next generation of drug candidates inspired by natural products.
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Affiliation(s)
- Erika A Crane
- Department of Chemistry, University of Basel, Switzerland
| | - Karl Gademann
- Department of Chemistry, University of Basel, Switzerland. .,Department of Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland.
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13
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Hügel HM, Smith AT, Rizzacasa MA. Macrolactam analogues of macrolide natural products. Org Biomol Chem 2016; 14:11301-11316. [DOI: 10.1039/c6ob02149b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The chemical modification of macrolide natural products into aza- or lactam analogues is a strategy employed to improve their metabolic stability and biological activity.
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Affiliation(s)
- Helmut M. Hügel
- School of Science & Biomedical and Health Innovations Enabling Capability Platform
- RMIT University
- Melbourne
- Australia
| | - Andrew T. Smith
- Griffith Sciences
- Gold Coast campus
- Griffith University
- Australia
| | - Mark A. Rizzacasa
- School of Chemistry
- the Bio21 Institute
- The University of Melbourne
- Australia
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14
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Larsen BJ, Sun Z, Lachacz E, Khomutnyk Y, Soellner MB, Nagorny P. Synthesis and Biological Evaluation of Lactimidomycin and Its Analogues. Chemistry 2015; 21:19159-67. [PMID: 26577990 DOI: 10.1002/chem.201503527] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Indexed: 02/06/2023]
Abstract
The studies culminating in the total synthesis of the glutarimide-containing eukaryote translation elongation inhibitor lactimidomycin are described. The optimized synthetic route features a Zn(II)-mediated intramolecular Horner-Wadsworth-Emmons (HWE) reaction resulting in a highly stereoselective formation of the strained 12-membered macrolactone of lactimidomycin on a 423 mg scale. The presence of the E,Z-diene functionality was found to be key for effective macrocyclizations as a complete removal of these unsaturation units resulted in exclusive formation of the dimer rather than monocyclic enoate. The synthetic route features a late-stage installation of the glutarimide functionality via an asymmetric catalytic Mukaiyama aldol reaction, which allows for a quick generation of lactimidomycin homolog 55 containing two additional carbons in the glutarimide side chain. Similar to lactimidomycin, this analog was found to possess cytotoxicity against MDA-MB-231 breast cancer cells (GI50 =1-3 μM) using in vitro 2D and 3D assays. Although lactimidomycin was found to be the most potent compound in terms of anticancer activity, 55 as well as truncated analogues 50-52 lacking the glutarimide side-chain were found to be significantly less toxic against human mammary epithelial cells.
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Affiliation(s)
- Brian J Larsen
- Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, MI 48109-1055 (USA)
| | - Zhankui Sun
- Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, MI 48109-1055 (USA)
| | - Eric Lachacz
- Medicinal Chemistry Department, College of Pharmacy, University of Michigan, 428 Church Street, Ann Arbor, MI 48109-1065 (USA)
| | - Yaroslav Khomutnyk
- Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, MI 48109-1055 (USA)
| | - Matthew B Soellner
- Medicinal Chemistry Department, College of Pharmacy, University of Michigan, 428 Church Street, Ann Arbor, MI 48109-1065 (USA).
| | - Pavel Nagorny
- Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, MI 48109-1055 (USA).
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Lo Re D, Zhou Y, Mucha J, Jones LF, Leahy L, Santocanale C, Krol M, Murphy PV. Synthesis of Migrastatin Analogues as Inhibitors of Tumour Cell Migration: Exploring Structural Change in and on the Macrocyclic Ring. Chemistry 2015; 21:18109-21. [DOI: 10.1002/chem.201502861] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Indexed: 11/10/2022]
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16
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El Remaily MAEAAA, Naidu VR, Ni S, Franzén J. Carbocation Catalysis: Oxa-Diels-Alder Reactions of Unactivated Aldehydes and Simple Dienes. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501112] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Bathula SR, Akondi SM, Mainkar PS, Chandrasekhar S. “Pruning of biomolecules and natural products (PBNP)”: an innovative paradigm in drug discovery. Org Biomol Chem 2015; 13:6432-48. [DOI: 10.1039/c5ob00403a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Smart Schneider: ‘Nature’ is the most intelligent tailor with an ability to utilize the resources. Researchers are still at an infant stage learning this art. The present review highlights some of the man made pruning of bio-molecules and NPs (PBNP) in finding chemicals with a better therapeutic index.
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Affiliation(s)
- Surendar Reddy Bathula
- Division of Natural Products Chemistry CSIR-Indian Institute of Chemical Technology
- Hyderabad
- 500007 India
| | - Srirama Murthy Akondi
- Division of Natural Products Chemistry CSIR-Indian Institute of Chemical Technology
- Hyderabad
- 500007 India
| | - Prathama S. Mainkar
- Division of Natural Products Chemistry CSIR-Indian Institute of Chemical Technology
- Hyderabad
- 500007 India
| | - Srivari Chandrasekhar
- Division of Natural Products Chemistry CSIR-Indian Institute of Chemical Technology
- Hyderabad
- 500007 India
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18
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Tsakos M, Schaffert ES, Clement LL, Villadsen NL, Poulsen TB. Ester coupling reactions – an enduring challenge in the chemical synthesis of bioactive natural products. Nat Prod Rep 2015; 32:605-32. [DOI: 10.1039/c4np00106k] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In this review we investigate the use of complex ester fragment couplings within natural product total syntheses. Using examples from the literature up to 2014 we illustrate the state-of-the-art as well as the challenges within this area of organic synthesis.
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Affiliation(s)
- Michail Tsakos
- Chemical Biology Laboratory
- Department of Chemistry
- Aarhus University
- Aarhus C
- Denmark
| | - Eva S. Schaffert
- Chemical Biology Laboratory
- Department of Chemistry
- Aarhus University
- Aarhus C
- Denmark
| | - Lise L. Clement
- Chemical Biology Laboratory
- Department of Chemistry
- Aarhus University
- Aarhus C
- Denmark
| | - Nikolaj L. Villadsen
- Chemical Biology Laboratory
- Department of Chemistry
- Aarhus University
- Aarhus C
- Denmark
| | - Thomas B. Poulsen
- Chemical Biology Laboratory
- Department of Chemistry
- Aarhus University
- Aarhus C
- Denmark
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Gade NR, Iqbal J. A Common Synthetic Protocol for the Cyclic and Acyclic Core of Migrastatin, Isomigrastatin, and Dorrigocin via a Chiral β-Hydroxy-γ-butyrolactone Intermediate. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402830] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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20
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Ding F, Leow ML, Ma J, William R, Liao H, Liu XW. Collective Synthesis of 4-Hydroxy-2-pyridone Alkaloids and Their Antiproliferation Activities. Chem Asian J 2014; 9:2548-54. [DOI: 10.1002/asia.201402466] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Indexed: 12/18/2022]
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21
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Lo Re D, Zhou Y, Nobis M, Anderson KI, Murphy PV. Synthesis of Migrastatin and its Macroketone Analogue and In Vivo FRAP Analysis of the Macroketone on E-Cadherin Dynamics. Chembiochem 2014; 15:1459-64. [DOI: 10.1002/cbic.201402061] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Indexed: 11/09/2022]
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22
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Ananthan B, Chang WC, Lin JS, Li PH, Yan TH. A C2-Symmetric Chiral Pool-Based Flexible Strategy: Synthesis of (+)- and (−)-Shikimic Acids, (+)- and (−)-4-epi-Shikimic Acids, and (+)- and (−)-Pinitol. J Org Chem 2014; 79:2898-905. [DOI: 10.1021/jo402764v] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Bakthavachalam Ananthan
- Department
of Chemistry, National Chung-Hsing University, Taichung 400, Taiwan, Republic of China
| | - Wan-Chun Chang
- Department
of Chemistry, National Chung-Hsing University, Taichung 400, Taiwan, Republic of China
| | - Jhe-Sain Lin
- Department
of Chemistry, National Chung-Hsing University, Taichung 400, Taiwan, Republic of China
| | - Pin-Hui Li
- Department
of Chemistry, National Chung-Hsing University, Taichung 400, Taiwan, Republic of China
| | - Tu-Hsin Yan
- Department
of Chemistry, National Chung-Hsing University, Taichung 400, Taiwan, Republic of China
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23
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Migrastatin analogues inhibit canine mammary cancer cell migration and invasion. PLoS One 2013; 8:e76789. [PMID: 24116159 PMCID: PMC3792885 DOI: 10.1371/journal.pone.0076789] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 09/04/2013] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Cancer spread to other organs is the main cause of death of oncological patients. Migration of cancer cells from a primary tumour is the crucial step in the complex process of metastasis, therefore blocking this process is currently the main treatment strategy. Metastasis inhibitors derived from natural products, such as, migrastatin, are very promising anticancer agents. Thus, the aim of our study was to investigate the effect of six migrastatin analogues (MGSTA-1 to 6) on migration and invasion of canine mammary adenocarcinoma cell lines isolated from primary tumours and their metastases to the lungs. Canine mammary tumours constitute a valuable tool for studying multiple aspect of human cancer. RESULTS OUR RESULTS SHOWED THAT TWO OF SIX FULLY SYNTHETIC ANALOGUES OF MIGRASTATIN: MGSTA-5 and MGSTA-6 were potent inhibitors of canine mammary cancer cells migration and invasion. These data were obtained using the wound healing test, as well as trans-well migration and invasion assays. Furthermore, the treatment of cancer cells with the most effective compound (MGSTA-6) disturbed binding between filamentous F-actin and fascin1. Confocal microscopy analyses revealed that treatment with MGSTA-6 increased the presence of unbound fascin1 and reduced co-localization of F-actin and fascin1 in canine cancer cells. Most likely, actin filaments were not cross-linked by fascin1 and did not generate the typical filopodial architecture of actin filaments in response to the activity of MGSTA-6. Thus, administration of MGSTA-6 results in decreased formation of filopodia protrusions and stress fibres in canine mammary cancer cells, causing inhibition of cancer migration and invasion. CONCLUSION Two synthetic migrastatin analogues (MGSTA-5 and MGSTA-6) were shown to be promising compounds for inhibition of cancer metastasis. They may have beneficial therapeutic effects in cancer therapy in dogs, especially in combination with other anticancer drugs. However, further in vivo studies are required to verify this hypothesis.
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Chang YK, Lo HJ, Yan TH. Efficient Synthesis of Optically Pure (+)-Bezene Diol Epoxide and (+)-Conduramine A-1. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.201000004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Gade NR, Iqbal J. Stereoselective formal synthesis of macrolidecore of migrastatin using late stage C–H oxidation. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.05.137] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Larsen BJ, Sun Z, Nagorny P. Synthesis of Eukaryotic Translation Elongation Inhibitor Lactimidomycin via Zn(II)-Mediated Horner–Wadsworth–Emmons Macrocyclization. Org Lett 2013; 15:2998-3001. [DOI: 10.1021/ol401186f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Brian J. Larsen
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Zhankui Sun
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Pavel Nagorny
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
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27
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Affiliation(s)
- Tomohiro Nagasawa
- Laboratory of Applied Bioorganic Chemistry, Graduate School of Agricultural Science, Tohoku University, Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai 981-8555, Japan
| | - Shigefumi Kuwahara
- Laboratory of Applied Bioorganic Chemistry, Graduate School of Agricultural Science, Tohoku University, Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai 981-8555, Japan
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28
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Micoine K, Persich P, Llaveria J, Lam MH, Maderna A, Loganzo F, Fürstner A. Total Syntheses and Biological Reassessment of Lactimidomycin, Isomigrastatin and Congener Glutarimide Antibiotics. Chemistry 2013; 19:7370-83. [DOI: 10.1002/chem.201300393] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Indexed: 12/20/2022]
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29
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Lo HJ, Chen CY, Zheng WL, Yeh SM, Yan TH. A C2-Symmetric Pool Based Flexible Strategy: An Enantioconvergent Synthesis of (+)-Valiolamine and (+)-Valienamine. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101845] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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30
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Xu J, Caro-Diaz EJE, Trzoss L, Theodorakis EA. Nature-inspired total synthesis of (-)-fusarisetin A. J Am Chem Soc 2012; 134:5072-5. [PMID: 22390338 DOI: 10.1021/ja300807e] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A concise, protecting group-free total synthesis of (-)-fusarisetin A (1) was efficiently achieved in nine steps from commercially available (S)-(-)-citronellal. The synthetic approach was inspired by our proposed biosynthesis of 1. Key transformations of our strategy include a facile construction of the decalin moiety that is produced via a stereoselective IMDA reaction and a one-pot TEMPO-induced radical cyclization/aminolysis that forms the C ring of 1. Our route is amenable to analogue synthesis for biological evaluation.
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Affiliation(s)
- Jing Xu
- Department of Chemistry and Biochemistry, University of California-San Diego , 9500 Gilman Drive, La Jolla, California 92093-0358, United States
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31
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Dias LC, Monteiro GC, Amarante GW, Conegero LS, Finelli FG. Stereoselective synthesis of analogs of the macrolactone of isomigrastatin. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.12.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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32
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Xu J, Caro-Diaz EJ, Lacoske MH, Hung CI, Jamora C, Theodorakis EA. Fusarisetin A: Scalable Total Synthesis and Related Studies. Chem Sci 2012; 3:3378-3386. [PMID: 23227303 PMCID: PMC3513937 DOI: 10.1039/c2sc21308g] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Fusarisetin A (1) is a recently isolated natural product that displays an unprecedented chemical motif and remarkable bioactivities as a potent cancer migration inhibitor. We describe here our studies leading to an efficient and scalable total synthesis of 1. Essential to the strategy was the development of a new route for the formation of a trans-decalin moiety of this compound and the application of an oxidative radical cyclization (ORC) reaction that produces fusarisetin A (1) from equisetin (2) via a bio-inspired process. TEMPO-induced and metal/O(2)-promoted ORC reactions were evaluated. Biological screening in vitro confirms the reported potency of (+)-1. Importantly, ex vivo studies show that this compound is able to inhibit different types of cell migration. Moreover, the C(5) epimer of (+)-1 was also identified as a potent cancer migration inhibitor, while (-)-1 and 2 were found to be significantly less potent. The optimized synthesis is applicable on gram scale and provides a solid platform for analogue synthesis and methodical biological study.
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Affiliation(s)
- Jing Xu
- Department of Chemistry & Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0358, USA
| | - Eduardo J.E. Caro-Diaz
- Department of Chemistry & Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0358, USA
| | - Michelle H. Lacoske
- Department of Chemistry & Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0358, USA
| | - Chao-I. Hung
- Department of Chemistry & Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0358, USA
| | - Colin Jamora
- Section of Cell and Developmental Biology and Department of Medicine, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0752, USA
| | - Emmanuel A. Theodorakis
- Department of Chemistry & Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0358, USA
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33
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Abstract
We describe herein the synthesis of a late-stage intermediate en route to cortistatin A. Key transformations included a Snieckus-like cascade sequence culminating in a 6π-electrocyclization, an alkylative dearomatization, and the stereoselective functionalization of the cortistatin A-ring. While the total synthesis we sought was not accomplished, the work sets the stage for several approaches to the preparation of novel analogs via diverted total synthesis.
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Affiliation(s)
- Zhang Wang
- Department of Chemistry, Columbia University, Havemeyer Hall, 3000 Broadway, New York, NY 10027
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34
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Wan S, Wu F, Rech JC, Green ME, Balachandran R, Horne WS, Day BW, Floreancig PE. Total synthesis and biological evaluation of pederin, psymberin, and highly potent analogs. J Am Chem Soc 2011; 133:16668-79. [PMID: 21902245 DOI: 10.1021/ja207331m] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The potent cytotoxins pederin and psymberin have been prepared through concise synthetic routes (10 and 14 steps in the longest linear sequences, respectively) that proceed via a late-stage multicomponent approach to construct the N-acyl aminal linkages. This route allowed for the facile preparation of a number of analogs that were designed to explore the importance of the alkoxy group in the N-acyl aminal and functional groups in the two major subunits on biological activity. These analogs, including a pederin/psymberin chimera, were analyzed for their growth inhibitory effects, revealing several new potent cytotoxins and leading to postulates regarding the molecular conformational and hydrogen bonding patterns that are required for biological activity. Second generation analogs have been prepared based on the results of the initial assays and a structure-based model for the binding of these compounds to the ribosome. The growth inhibitory properties of these compounds are reported. These studies show the profound role that organic chemistry in general and specifically late-stage multicomponent reactions can play in the development of unique and potent effectors for biological responses.
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Affiliation(s)
- Shuangyi Wan
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
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35
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Emergence of potent inhibitors of metastasis in lung cancer via syntheses based on migrastatin. Proc Natl Acad Sci U S A 2011; 108:15074-8. [PMID: 21808037 DOI: 10.1073/pnas.1015247108] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Migrastatin is a biologically active natural product isolated from Streptomyces that has been shown to inhibit tumor cell migration. Upon completion of the first total synthesis of migrastatin, a number of structurally simplified analogs were prepared. Following extensive in vitro screening, a new generation of analogs was identified that demonstrates substantially higher levels of in vitro inhibitory activity, stability and synthetic accessibility when compared to the parent natural product. Herein, we describe two promising ether-derivative analogs, the migrastatin core ether (ME) and the carboxymethyl-ME (CME), which exhibit high efficacy in blocking tumor cell migration and metastasis in lung cancer. These compounds show an in vitro migration inhibition in the micromolar range (IC(50): ME 1.5 to 8.2 μM, CME 0.5 to 5 μM). In a human small-cell lung carcinoma (SCLC) primary xenograft model, ME and CME compounds were found to be highly potent in inhibiting overall metastasis even at the lowest dosage used (degree of inhibition: 96.2% and 99.3%, respectively). Together these very encouraging findings suggest that these analogs have promise as potent antimetastatic agents in lung cancer.
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36
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Rajski SR, Shen B. Multifaceted modes of action for the glutarimide-containing polyketides revealed. Chembiochem 2011; 11:1951-4. [PMID: 20806307 DOI: 10.1002/cbic.201000370] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Scott R Rajski
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA
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37
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Dias LC, Finelli FG, Conegero LS, Krogh R, Andricopulo AD. Synthesis of the Macrolactone of Migrastatin and Analogues with Potent Cell-Migration Inhibitory Activity. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001097] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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38
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Basavaiah D, Lenin DV. A Facile Synthesis of Substituted Indenones and Piperidine-2,6-diones from the Baylis-Hillman Acetates. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000739] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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39
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Wilson R, Danishefsky S. Zum Wirkungsbereich der chemischen Synthese: Aufbau einer Minipipeline in einem akademischen Labor. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201000775] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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40
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Wilson RM, Danishefsky SJ. On the Reach of Chemical Synthesis: Creation of a Mini-Pipeline from an Academic Laboratory. Angew Chem Int Ed Engl 2010; 49:6032-56. [PMID: 20661969 DOI: 10.1002/anie.201000775] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Rebecca M Wilson
- Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10065, USA
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41
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Magpusao AN, Desmond RT, Billings KJ, Fenteany G, Peczuh MW. Synthesis and evaluation of antimigratory and antiproliferative activities of lipid-linked [13]-macro-dilactones. Bioorg Med Chem Lett 2010; 20:5472-6. [PMID: 20709546 DOI: 10.1016/j.bmcl.2010.07.083] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2010] [Revised: 07/19/2010] [Accepted: 07/20/2010] [Indexed: 12/21/2022]
Abstract
The biological activities of a family of novel, lipid-linked 13-membered-ring macro-dilactones are reported. These [13]-macro-dilactones were synthesized by diacylation of functionalized diols, followed by ring-closing metathesis under conditions we had previously reported. Antimigratory, cytostatic and cytotoxic activities of the compounds against cancer cells were evaluated. Compound 13 was the most potent in the series, while compound 10 had the broadest concentration range of subtoxic antiproliferative activity. These compounds share common structural components, namely the [13]-macro-dilactone templated by an octyl alpha-glucoside 4,6-diol.
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42
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Nagorny P, Krauss I, Njardarson JT, Perez L, Gaul C, Yang G, Ouerfelli O, Danishefsky SJ. Confirmation of the Structures of Synthetic Derivatives of Migrastatin in the Light of Recently Disclosed Crystallographically Based Claims. Tetrahedron Lett 2010; 51:3873-3875. [PMID: 20676392 DOI: 10.1016/j.tetlet.2010.05.056] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In the light of recently disclosed crystallographic studies on migrastatin ketone 2 complex with fascin, the structures of migrastatin ketone 2 and migrastatin ether 4 have been re-evaluated by NMR and X-Ray crystallographic techniques. The results of these studies established the correctness of the previously reported structural assignment and confirm that the "small molecule" co-crystallized in complex with fascin is not the migrastatin ketone, which was provided for the infusion experiment, but rather its stereoisomer.
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Affiliation(s)
- Pavel Nagorny
- Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, Laboratory for Bioorganic Chemistry
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43
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Oskarsson T, Nagorny P, Krauss IJ, Perez L, Mandal M, Yang G, Ouerfelli O, Xiao D, Moore MAS, Massagué J, Danishefsky SJ. Diverted total synthesis leads to the generation of promising cell-migration inhibitors for treatment of tumor metastasis: in vivo and mechanistic studies on the migrastatin core ether analog. J Am Chem Soc 2010; 132:3224-8. [PMID: 20155906 DOI: 10.1021/ja9101503] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A significantly simpler analog of the natural product migrastatin, termed migrastatin ether (ME), has been prepared and evaluated. Both in vivo and in vitro studies indicate that ME exhibits a concentration-dependent inhibitory effect on migration of breast cancer cells.
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Affiliation(s)
- Thordur Oskarsson
- Cancer Biology and Genetics Program, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, New York 10065, USA
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44
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Danishefsky S. On the potential of natural products in the discovery of pharma leads: a case for reassessment. Nat Prod Rep 2010; 27:1114-6. [PMID: 20383353 DOI: 10.1039/c003211p] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The central proposition advanced herein is that complex target oriented synthesis, enabled by historic advances in methodology, has enormously expanded the scope of the possible. Accordingly, natural products, a proven long-term source of pharma discovery, re-emerge as potentially valuable elements for synthesis-driven pharma exploitation.
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Affiliation(s)
- Samuel Danishefsky
- Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10021, USA
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45
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Laclef S, Exner CJ, Turks M, Videtta V, Vogel P. Synthesis of (E,Z)-1-alkoxy-3-acyloxy-2-methylpenta-1,3-dienes via Danishefsky-type dienes or O-acylation of enones. J Org Chem 2010; 74:8882-5. [PMID: 19842642 DOI: 10.1021/jo901878b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
1-Alkoxy-2-methyl-3-acyloxy-(E,E)-penta-1,3-dienes have been prepared applying among others a modified Danishefsky's general method, including chiral, racemic, and achiral derivatives.
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Affiliation(s)
- Sylvain Laclef
- Laboratory of Glycochemistry and Asymmetric Synthesis, Swiss Federal Institute of Technology (EPFL), Batochime, CH-1015 Lausanne, Switzerland
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46
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May AE, Connell NT, Dahlmann HA, Hoye TR. A Useful Modification of the Evans Magnesium Halide-Catalyzed anti-Aldol Reaction: Application to Enolizable Aldehydes. Synlett 2010; 13:1984-1986. [PMID: 26823643 DOI: 10.1055/s-0030-1258480] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
A practical protocol for use of the magnesium halide-catalyzed anti-aldol reaction of an Evans N-acyloxazolidinone with enolizable aldehydes is reported. The yields of anti-aldol adducts for saturated or unsaturated and branched or unbranched aliphatic aldehydes are preparatively useful.
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Affiliation(s)
- Aaron E May
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
| | - Nathan T Connell
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
| | - Heidi A Dahlmann
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
| | - Thomas R Hoye
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
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47
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Chang YK, Lo HJ, Yan TH. A flexible strategy based on a C2-symmetric pool of chiral substrates: concise synthesis of (+)-valienamine, key intermediate of (+)- pancratistatin, and conduramines A-1 and E. Org Lett 2009; 11:4278-81. [PMID: 19711969 DOI: 10.1021/ol9016194] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new strategy invoking a new application of the [3,3] sigmatropic rearrangement of allylic azides and the presence of a C(2) symmetry element within a pool of chiral substrates was evolved. Not only does this simple flexible strategy provide a concise approach to (+)-valienamine, but it also can readily be adopted for the synthesis of conduramines A-1 and E and the enantiopure azido carbonate 4, a key intermediate of (+)-pancratistatin.
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Affiliation(s)
- Yuan-Kang Chang
- Department of Chemistry, National Chung-Hsing University, Taichung 400, Taiwan, Republic of China
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48
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Basavaiah D, Lenin DV, Devendar B. A simple protocol for the synthesis of a piperidine-2,6-dione framework from Baylis–Hillman adducts. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.03.038] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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49
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50
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Ju J, Rajski SR, Lim SK, Seo JW, Peters NR, Hoffmann FM, Shen B. Evaluation of new migrastatin and dorrigocin congeners unveils cell migration inhibitors with dramatically improved potency. Bioorg Med Chem Lett 2008; 18:5951-4. [PMID: 18684620 DOI: 10.1016/j.bmcl.2008.07.072] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2008] [Revised: 07/16/2008] [Accepted: 07/17/2008] [Indexed: 11/29/2022]
Abstract
Lactimidomycin (LTM, 1), iso-migrastatin (iso-MGS, 2) and migrastatin (MGS, 3) are macrolide antitumor antibiotics differing in macrolide ring size but all bearing a glutarimide side chain. To further develop these natural products and related analogs as drug candidates we have produced and evaluated the biological activities of a small library of iso-MGS and LTM-derived agents; congeners evaluated bear either the MGS scaffold or related acyclic (dorrigocin) scaffolds. Scratch wound-healing (SWH) assays with 4T1 mouse and MDA-MB-231 human mammary tumor cell lines, respectively, reveal structural elements crucial to inhibition of cell migration by these compounds. Moreover, two substances, 14 and 17, with activity far superior to that of MGS are unveiled by SWH assays.
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Affiliation(s)
- Jianhua Ju
- Division of Pharmaceutical Sciences, University of Wisconsin-Madison, Madison, WI 53705-2222, USA
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