1
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Schmitt C, Mauker P, Vepřek NA, Gierse C, Meiring JCM, Kuch J, Akhmanova A, Dehmelt L, Thorn-Seshold O. A Photocaged Microtubule-Stabilising Epothilone Allows Spatiotemporal Control of Cytoskeletal Dynamics. Angew Chem Int Ed Engl 2024; 63:e202410169. [PMID: 38961560 DOI: 10.1002/anie.202410169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 06/28/2024] [Accepted: 07/03/2024] [Indexed: 07/05/2024]
Abstract
The cytoskeleton is essential for spatial and temporal organisation of a wide range of cellular and tissue-level processes, such as proliferation, signalling, cargo transport, migration, morphogenesis, and neuronal development. Cytoskeleton research aims to study these processes by imaging, or by locally manipulating, the dynamics and organisation of cytoskeletal proteins with high spatiotemporal resolution: which matches the capabilities of optical methods. To date, no photoresponsive microtubule-stabilising tool has united all the features needed for a practical high-precision reagent: a low potency and biochemically stable non-illuminated state; then an efficient, rapid, and clean photoresponse that generates a high potency illuminated state; plus good solubility at suitable working concentrations; and efficient synthetic access. We now present CouEpo, a photocaged epothilone microtubule-stabilising reagent that combines these needs. Its potency increases approximately 100-fold upon irradiation by violet/blue light to reach low-nanomolar values, allowing efficient photocontrol of microtubule dynamics in live cells, and even the generation of cellular asymmetries in microtubule architecture and cell dynamics. CouEpo is thus a high-performance tool compound that can support high-precision research into many microtubule-associated processes, from biophysics to transport, cell motility, and neuronal physiology.
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Affiliation(s)
- Carina Schmitt
- Department of Pharmacy, Ludwig-Maximilians University of Munich, Butenandtstrasse 7, Munich, 81377, Germany
| | - Philipp Mauker
- Department of Pharmacy, Ludwig-Maximilians University of Munich, Butenandtstrasse 7, Munich, 81377, Germany
| | - Nynke A Vepřek
- Department of Pharmacy, Ludwig-Maximilians University of Munich, Butenandtstrasse 7, Munich, 81377, Germany
| | - Carolin Gierse
- Department of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Str. 4a, Dortmund, 44227, Germany
| | - Joyce C M Meiring
- Cell Biology, Neurobiology and Biophysics, Department of Biology, Utrecht University, Padualaan 8, 3584 CH, Utrecht, Netherlands
| | - Jürgen Kuch
- Department of Pharmacy, Ludwig-Maximilians University of Munich, Butenandtstrasse 7, Munich, 81377, Germany
| | - Anna Akhmanova
- Cell Biology, Neurobiology and Biophysics, Department of Biology, Utrecht University, Padualaan 8, 3584 CH, Utrecht, Netherlands
| | - Leif Dehmelt
- Department of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Str. 4a, Dortmund, 44227, Germany
| | - Oliver Thorn-Seshold
- Department of Pharmacy, Ludwig-Maximilians University of Munich, Butenandtstrasse 7, Munich, 81377, Germany
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2
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Xia X, Yang X, Gao W, Huang W, Xia X, Yan D. A novel HER2 targeting nanoagent self-assembled from affibody-epothilone B conjugate for cancer therapy. J Nanobiotechnology 2024; 22:502. [PMID: 39169343 PMCID: PMC11337599 DOI: 10.1186/s12951-024-02754-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Accepted: 08/05/2024] [Indexed: 08/23/2024] Open
Abstract
Epothilone B (Epo B), a promising antitumor compound effective against various types of cancer cells in vitro. However, its poor selectivity for tumor cells and inadequate therapeutic windows significantly limit its potential clinical application. Affibody is a class of non-immunoglobulin affinity proteins with precise targeting capability to overexpressed molecular receptors on cancer cells, has been intensively investigated due to its exceptional affinity properties. In this study, we present a targeted nanoagent self-assembled from the precursor of an affibody conjugated with Epo B via a linker containing the thioketal (tk) group that is sensitive to reactive oxygen species (ROS). The core-shell structure of the ZHER2:342-Epo B Affibody-Drug Conjugate Nanoagent (Z-E ADCN), with the cytotoxin Epo B encapsulated within the ZHER2:342 affibody corona, leads to significantly reduced side effects on normal organs. Moreover, the abundant presence of ZHER2:342 on the surface effectively enhances the targeting capacity and tumor accumulation of the drug. Z-E ADCN can be internalized by cancer cells via HER2 receptor-mediated endocytosis followed by Epo B release in response to high levels of ROS, resulting in excellent anticancer efficacy in HER2-positive tumor models.
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Affiliation(s)
- Xuelin Xia
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Xiaoyuan Yang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Wenhui Gao
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Wei Huang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Xiaoxia Xia
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
| | - Deyue Yan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
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3
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Villegas C, González-Chavarría I, Burgos V, Iturra-Beiza H, Ulrich H, Paz C. Epothilones as Natural Compounds for Novel Anticancer Drugs Development. Int J Mol Sci 2023; 24:6063. [PMID: 37047035 PMCID: PMC10093981 DOI: 10.3390/ijms24076063] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/07/2023] [Accepted: 03/11/2023] [Indexed: 04/14/2023] Open
Abstract
Epothilone is a natural 16-membered macrolide cytotoxic compound produced by the metabolism of the cellulose-degrading myxobacterium Sorangium cellulosum. This review summarizes results in the study of epothilones against cancer with preclinical results and clinical studies from 2010-2022. Epothilone have mechanisms of action similar to paclitaxel by inducing tubulin polymerization and apoptosis with low susceptibility to tumor resistance mechanisms. It is active against refractory tumors, being superior to paclitaxel in many respects. Since the discovery of epothilones, several derivatives have been synthesized, and most of them have failed in Phases II and III in clinical trials; however, ixabepilone and utidelone are currently used in clinical practice. There is robust evidence that triple-negative breast cancer (TNBC) treatment improves using ixabepilone plus capecitabine or utidelone in combination with capecitabine. In recent years innovative synthetic strategies resulted in the synthesis of new epothilone derivatives with improved activity against refractory tumors with better activities when compared to ixabepilone or taxol. These compounds together with specific delivery mechanisms could be developed in anti-cancer drugs.
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Affiliation(s)
- Cecilia Villegas
- Laboratory of Natural Products & Drug Discovery, Center CEBIM, Department of Basic Sciences, Universidad de La Frontera, Temuco 4811230, Chile
| | - Iván González-Chavarría
- Departamento de Fisiopatología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción 4030000, Chile
| | - Viviana Burgos
- Departamento de Ciencias Biológicas y Químicas, Facultad de Recursos Naturales, Universidad Católica de Temuco, Temuco 4800000, Chile
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomas, Temuco 4780000, Chile
| | - Héctor Iturra-Beiza
- Departamento de Ciencias Biológicas y Químicas, Facultad de Recursos Naturales, Universidad Católica de Temuco, Temuco 4800000, Chile
| | - Henning Ulrich
- Department of Biochemistry, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil
| | - Cristian Paz
- Laboratory of Natural Products & Drug Discovery, Center CEBIM, Department of Basic Sciences, Universidad de La Frontera, Temuco 4811230, Chile
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4
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Zhang H, Tian Y, Yuan X, Xie F, Yu S, Cai J, Sun B, Shan C, Zhang W. Site-directed late-stage diversification of macrocyclic nannocystins facilitating anticancer SAR and mode of action studies. RSC Med Chem 2023; 14:299-312. [PMID: 36846368 PMCID: PMC9945860 DOI: 10.1039/d2md00393g] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022] Open
Abstract
Nannocystins are a family of 21-membered cyclodepsipeptides with excellent anticancer activity. However, their macrocyclic architecture poses a significant challenge to structure modification. Herein, this issue is addressed by leveraging the strategy of post-macrocyclization diversification. In particular, a novel serine-incorporating nannocystin was designed so that its appending hydroxyl group could diversify into a wide variety of side chain analogues. Such effort facilitated not only structure-activity correlation at the subdomain of interest, but also the development of a macrocyclic coumarin-labeled fluorescence probe. Uptake experiments indicated good cell permeability of the probe, and endoplasmic reticulum was identified as its subcellular localization site.
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Affiliation(s)
- Han Zhang
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University Tianjin People's Republic of China
| | - Yunfeng Tian
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University Tianjin People's Republic of China
| | - Xiaoya Yuan
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University Tianjin People's Republic of China
| | - Fei Xie
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University Tianjin People's Republic of China
| | - Siqi Yu
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University Tianjin People's Republic of China
| | - Jiayou Cai
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University Tianjin People's Republic of China
| | - Bin Sun
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University Tianjin People's Republic of China
| | - Changliang Shan
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University Tianjin People's Republic of China
| | - Weicheng Zhang
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University Tianjin People's Republic of China
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5
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Selezneva NK, Sunagatullina GR, Valiullina ZR, Miftakhov MS. Synthesis of the 2,3-Asyridinyl Derivative of d-Carvone. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2022. [DOI: 10.1134/s107042802205013x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Gao L, Meiring JCM, Heise C, Rai A, Müller‐Deku A, Akhmanova A, Thorn‐Seshold J, Thorn‐Seshold O. Photoswitchable Epothilone-Based Microtubule Stabilisers Allow GFP-Imaging-Compatible, Optical Control over the Microtubule Cytoskeleton. Angew Chem Int Ed Engl 2022; 61:e202114614. [PMID: 34902214 PMCID: PMC9305116 DOI: 10.1002/anie.202114614] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Indexed: 11/29/2022]
Abstract
Optical methods to modulate microtubule dynamics show promise for reaching the micron- and millisecond-scale resolution needed to decrypt the roles of the cytoskeleton in biology. However, optical microtubule stabilisers are under-developed. We introduce "STEpos" as GFP-orthogonal, light-responsive epothilone-based microtubule stabilisers. They use a novel styrylthiazole photoswitch in a design to modulate hydrogen-bonding and steric effects that control epothilone potency. STEpos photocontrol microtubule dynamics and cell division with micron- and second-scale spatiotemporal precision. They substantially improve potency, solubility, and ease-of-use compared to previous optical microtubule stabilisers, and the structure-photoswitching-activity relationship insights in this work will guide future optimisations. The STEpo reagents can contribute greatly to high-precision research in cytoskeleton biophysics, cargo transport, cell motility, cell division, development, and neuroscience.
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Affiliation(s)
- Li Gao
- Department of PharmacyLudwig-Maximilians University of MunichButenandtstrasse 7Munich81377Germany
| | - Joyce C. M. Meiring
- Cell Biology, Neurobiology and BiophysicsDepartment of BiologyUtrecht UniversityPadualaan 83584 CHUtrechtNetherlands
| | - Constanze Heise
- Department of PharmacyLudwig-Maximilians University of MunichButenandtstrasse 7Munich81377Germany
| | - Ankit Rai
- Cell Biology, Neurobiology and BiophysicsDepartment of BiologyUtrecht UniversityPadualaan 83584 CHUtrechtNetherlands
| | - Adrian Müller‐Deku
- Department of PharmacyLudwig-Maximilians University of MunichButenandtstrasse 7Munich81377Germany
| | - Anna Akhmanova
- Cell Biology, Neurobiology and BiophysicsDepartment of BiologyUtrecht UniversityPadualaan 83584 CHUtrechtNetherlands
| | - Julia Thorn‐Seshold
- Department of PharmacyLudwig-Maximilians University of MunichButenandtstrasse 7Munich81377Germany
| | - Oliver Thorn‐Seshold
- Department of PharmacyLudwig-Maximilians University of MunichButenandtstrasse 7Munich81377Germany
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7
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Gao L, Meiring JCM, Heise C, Rai A, Müller‐Deku A, Akhmanova A, Thorn‐Seshold J, Thorn‐Seshold O. Photoswitchable Epothilone‐Based Microtubule Stabilisers Allow GFP‐Imaging‐Compatible, Optical Control over the Microtubule Cytoskeleton**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114614] [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)
- Li Gao
- Department of Pharmacy Ludwig-Maximilians University of Munich Butenandtstrasse 7 Munich 81377 Germany
| | - Joyce C. M. Meiring
- Cell Biology, Neurobiology and Biophysics Department of Biology Utrecht University Padualaan 8 3584 CH Utrecht Netherlands
| | - Constanze Heise
- Department of Pharmacy Ludwig-Maximilians University of Munich Butenandtstrasse 7 Munich 81377 Germany
| | - Ankit Rai
- Cell Biology, Neurobiology and Biophysics Department of Biology Utrecht University Padualaan 8 3584 CH Utrecht Netherlands
| | - Adrian Müller‐Deku
- Department of Pharmacy Ludwig-Maximilians University of Munich Butenandtstrasse 7 Munich 81377 Germany
| | - Anna Akhmanova
- Cell Biology, Neurobiology and Biophysics Department of Biology Utrecht University Padualaan 8 3584 CH Utrecht Netherlands
| | - Julia Thorn‐Seshold
- Department of Pharmacy Ludwig-Maximilians University of Munich Butenandtstrasse 7 Munich 81377 Germany
| | - Oliver Thorn‐Seshold
- Department of Pharmacy Ludwig-Maximilians University of Munich Butenandtstrasse 7 Munich 81377 Germany
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8
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Wernke KM, Tirla A, Xue M, Surovtseva YV, Menges FS, Herzon SB. Probing Microbiome Genotoxicity: A Stable Colibactin Provides Insight into Structure-Activity Relationships and Facilitates Mechanism of Action Studies. J Am Chem Soc 2021; 143:15824-15833. [PMID: 34524796 DOI: 10.1021/jacs.1c07559] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Colibactin is a genotoxic metabolite produced by commensal-pathogenic members of the human microbiome that possess the clb (aka pks) biosynthetic gene cluster. clb+ bacteria induce tumorigenesis in models of intestinal inflammation and have been causally linked to oncogenesis in humans. While colibactin is believed underlie these effects, it has not been possible to study the molecule directly due to its instability. Herein, we report the synthesis and biological studies of colibactin 742 (4), a stable colibactin derivative. We show that colibactin 742 (4) induces DNA interstrand-cross-links, activation of the Fanconi Anemia DNA repair pathway, and G2/M arrest in a manner similar to clb+E. coli. The linear precursor 9, which mimics the biosynthetic precursor to colibactin, also recapitulates the bacterial phenotype. In the course of this work, we discovered a novel cyclization pathway that was previously undetected in MS-based studies of colibactin, suggesting a refinement to the natural product structure and its mode of DNA binding. Colibactin 742 (4) and its precursor 9 will allow researchers to study colibactin's genotoxic effects independent of the producing organism for the first time.
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Affiliation(s)
- Kevin M Wernke
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Alina Tirla
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Mengzhao Xue
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Yulia V Surovtseva
- Yale Center for Molecular Discovery, Yale University, West Haven, Connecticut 06516, United States
| | - Fabian S Menges
- Chemical and Biophysical Instrumentation Center, Yale University, New Haven, Connecticut 06511, United States
| | - Seth B Herzon
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States.,Department of Pharmacology, Yale School of Medicine, New Haven, Connecticut 06520, United States
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9
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Deimling M, Kousik SR, Abitaev K, Frey W, Sottmann T, Koynov K, Laschat S, Atanasova P. Hierarchical Silica Inverse Opals as a Catalyst Support for Asymmetric Molecular Heterogeneous Catalysis with Chiral Rh‐diene Complexes. ChemCatChem 2021. [DOI: 10.1002/cctc.202001997] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Max Deimling
- Institute of Organic Chemistry University of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Shravan R. Kousik
- Institute for Materials Science University of Stuttgart Heisenbergstraße 3 70569 Stuttgart Germany
| | - Karina Abitaev
- Institute of Physical Chemistry University of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Wolfgang Frey
- Institute of Organic Chemistry University of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Thomas Sottmann
- Institute of Physical Chemistry University of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Kaloian Koynov
- Max-Planck-Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Sabine Laschat
- Institute of Organic Chemistry University of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Petia Atanasova
- Institute for Materials Science University of Stuttgart Heisenbergstraße 3 70569 Stuttgart Germany
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10
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Alnufaie R, Ali MA, Alkhaibari IS, Roy S, Day VW, Alam MA. Benign Synthesis of Fused-thiazoles with Enone-based Natural Products and Drugs for Lead Discovery. NEW J CHEM 2021; 45:6001-6017. [PMID: 33840994 PMCID: PMC8026163 DOI: 10.1039/d1nj00380a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
In an effort to synthesize a library of bioactive molecules, we present an efficient synthesis of fused-thiazole derivatives of natural products and approved drugs by using an environmentally usable solvent, acetic acid, and without any external reagent. Cholestenone, ethisterone, progesterone, and nootkatone-derived epoxyketones have been utilized to synthesize 50 novel compounds. The plausible mechanism of the reaction has been determined by theoretical calculation using M06-2X/6-31+G(d,p). These novel molecules have been tested against cancer cell lines and pathogenic bacterial strains. Several ethisterone-based fused-thiazole compounds are found to be potent growth inhibitors of cancer cell lines at submicromolar concentrations.
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Affiliation(s)
- Rawan Alnufaie
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, Arkansas 72467, United States
| | - Mohamad Akbar Ali
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Ibrahim S Alkhaibari
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, Arkansas 72467, United States
| | - Subrata Roy
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, Arkansas 72467, United States
| | - Victor W Day
- Department of Chemistry, Integrated Science Building, University of Kansas, Lawrence, Kansas 66046, United States
| | - Mohammad A Alam
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, Arkansas 72467, United States
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11
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Alam MN, Dash SR, Mukherjee A, Pandole S, Marelli UK, Vanka K, Maity P. [1,3]-Claisen Rearrangement via Removable Functional Group Mediated Radical Stabilization. Org Lett 2021; 23:890-895. [PMID: 33443431 DOI: 10.1021/acs.orglett.0c04109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A thermal O-to-C [1,3]-rearrangement of α-hydroxy acid derived enol ethers was achieved under mild conditions. The 2-aminothiophenol protection of carboxylic acids facilitates formation of the [1,3] precursor and its thermal rearrangement via stabilization of a radical intermediate. Experimental and theoretical evidence for dissociative radical pair formation, its captodative stability via aminothiophenol, and a unique solvent effect are presented. The aminothiophenol was deprotected from rearrangement products as well as after derivatization to useful synthons.
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Affiliation(s)
- Md Nirshad Alam
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Soumya Ranjan Dash
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Anirban Mukherjee
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Satish Pandole
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Udaya Kiran Marelli
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kumar Vanka
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Pradip Maity
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
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12
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Minakata S, Kiyokawa K, Nakamura S. Transition-Metal-Free Aziridination of Alkenes with Sulfamate Esters Using tert-Butyl Hypoiodite. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)20] [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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13
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Trost BM, Zhu C. Zn-ProPhenol Catalyzed Enantioselective Mannich Reaction of 2 H-Azirines with Alkynyl Ketones. Org Lett 2020; 22:9683-9687. [PMID: 33269592 DOI: 10.1021/acs.orglett.0c03737] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The enantioselective Mannich reaction of 2H-azirines with alkynyl ketones is achieved under Zn-ProPhenol catalysis, delivering various aziridines with vicinal tetrasubstituted stereocenters in high yields with excellent enantioselectivities. The bimetallic Zn-ProPhenol complexes activate both the nucleophile and the electrophile in the same chiral pocket. A unique intramolecular hydrogen bond is observed in the obtained Mannich adducts, which lowers the basicity of the product's aziridine nitrogen thus favoring enantioselective control and allowing catalyst turnover.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Chuanle Zhu
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
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14
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Nicolaou KC, Rigol S. Perspectives from nearly five decades of total synthesis of natural products and their analogues for biology and medicine. Nat Prod Rep 2020; 37:1404-1435. [PMID: 32319494 PMCID: PMC7578074 DOI: 10.1039/d0np00003e] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Covering: 1970 to 2020By definition total synthesis is the art and science of making the molecules of living Nature in the laboratory, and by extension, their analogues. Although obvious, its application to the synthesis of molecules for biology and medicine was not always the purpose of total synthesis. In recent years, however, the field has acquired momentum as its power to reach higher molecular complexity and diversity is increasing, and as the demand for rare bioactive natural products and their analogues is expanding due to their recognised potential to facilitate biology and drug discovery and development. Today this component of total synthesis endeavors is considered highly desirable, and could be part of interdisciplinary academic and/or industrial partnerships, providing further inspiration and momentum to the field. In this review we provide a brief historical background of the emergence of the field of total synthesis as it relates to making molecules for biology and medicine. We then discuss specific examples of this practice from our laboratories as they developed over the years. The review ends with a conclusion and future perspectives for natural products chemistry and its applications to biology and medicine and other added-value contributions to science and society.
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Affiliation(s)
- K C Nicolaou
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA.
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15
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Xia X, Yang X, Huang P, Yan D. ROS-Responsive Nanoparticles Formed from RGD-Epothilone B Conjugate for Targeted Cancer Therapy. ACS APPLIED MATERIALS & INTERFACES 2020; 12:18301-18308. [PMID: 32242653 DOI: 10.1021/acsami.0c00650] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The targeted nanoagents have shown great potential clinically for cancer therapy. Traditional targeted nanodrugs are usually prepared through surface postmodification. Herein, a nanodrug is self-assembled from the amphiphilic precursor of targeting peptide RGD conjugated with cytotoxin epothilone B (Epo B) through a linker containing the thioketal (tk) group that is sensitive to reactive oxygen species (ROS). The obtained RGD-tk-Epo B conjugate nanoparticles (RECNs) are stable and uniform, which facilitates improving tumor-targeting capacity and accumulation of the drug because of the large number of RGD on the surface of the RECN. After internalization by cancer cells, the blood-inert tk group between RGD and Epo B can be cleaved in the presence of high level of ROS to release Epo B, exhibiting a markedly tumor selectivity and excellent anticancer efficiency in vitro and in vivo.
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Affiliation(s)
- Xuelin Xia
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaoyuan Yang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ping Huang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Deyue Yan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
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16
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Nicolaou KC, Shelke YG, Dherange BD, Kempema A, Lin B, Gu C, Sandoval J, Hammond M, Aujay M, Gavrilyuk J. Design, Synthesis, and Biological Investigation of Epothilone B Analogues Featuring Lactone, Lactam, and Carbocyclic Macrocycles, Epoxide, Aziridine, and 1,1-Difluorocyclopropane and Other Fluorine Residues. J Org Chem 2020; 85:2865-2917. [DOI: 10.1021/acs.joc.0c00123] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K. C. Nicolaou
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Yogesh G. Shelke
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Balu D. Dherange
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Aaron Kempema
- AbbVie, Inc., 400 East Jamie Court, South San Francisco, California 94080, United States
| | - Baiwei Lin
- AbbVie, Inc., 400 East Jamie Court, South San Francisco, California 94080, United States
| | - Christine Gu
- AbbVie, Inc., 400 East Jamie Court, South San Francisco, California 94080, United States
| | - Joseph Sandoval
- AbbVie, Inc., 400 East Jamie Court, South San Francisco, California 94080, United States
| | - Mikhail Hammond
- AbbVie, Inc., 400 East Jamie Court, South San Francisco, California 94080, United States
| | - Monette Aujay
- AbbVie, Inc., 400 East Jamie Court, South San Francisco, California 94080, United States
| | - Julia Gavrilyuk
- AbbVie, Inc., 400 East Jamie Court, South San Francisco, California 94080, United States
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17
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Tarannum S, Sk S, Das S, Wani IA, Ghorai MK. Stereoselective Syntheses of Highly Functionalized Imidazolidines and Oxazolidines via Ring-Opening Cyclization of Activated Aziridines and Epoxides with Amines and Aldehydes. J Org Chem 2020; 85:367-379. [PMID: 31782305 DOI: 10.1021/acs.joc.9b02278] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A mild one-pot stereospecific synthetic route to highly functionalized imidazolidines and oxazolidines via SN2-type ring-opening of the corresponding activated aziridines and epoxides with amines followed by p-toluenesulfonic acid (PTSA)-catalyzed intramolecular cyclization with aldehydes has been developed. The methodology tolerates a variety of functional groups and furnishes the desired products in high yields (up to 92%) with excellent stereoselectivities (de, ee > 99%). Interestingly, imidazolidines were formed as the cis-isomers, whereas oxazolidines were produced as trans-isomers exclusively.
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Affiliation(s)
- Saima Tarannum
- Department of Chemistry , Indian Institute of Technology , 208016 Kanpur , Uttar Pradesh , India
| | - Sahid Sk
- Department of Chemistry , Indian Institute of Technology , 208016 Kanpur , Uttar Pradesh , India
| | - Subhomoy Das
- Department of Chemistry , Indian Institute of Technology , 208016 Kanpur , Uttar Pradesh , India
| | - Imtiyaz Ahmad Wani
- Department of Chemistry , Indian Institute of Technology , 208016 Kanpur , Uttar Pradesh , India
| | - Manas K Ghorai
- Department of Chemistry , Indian Institute of Technology , 208016 Kanpur , Uttar Pradesh , India
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18
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Freund RRA, Gobrecht P, Rao Z, Gerstmeier J, Schlosser R, Görls H, Werz O, Fischer D, Arndt HD. Stereoselective total synthesis of parthenolides indicates target selectivity for tubulin carboxypeptidase activity. Chem Sci 2019; 10:7358-7364. [PMID: 31489157 PMCID: PMC6713873 DOI: 10.1039/c9sc01473j] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 06/14/2019] [Indexed: 12/20/2022] Open
Abstract
The 2-(silyloxymethyl)allylboration of aldehydes was established to enable stereoselective access to α-(exo)-methylene γ-butyrolactones under mild conditions. Acid-labile functionality and chiral carbonyl compounds are tolerated. Excellent asymmetric induction was observed for β,β'-disubstituted α,β-epoxy aldehydes. These findings led to the enantioselective total synthesis of the sesquiterpene natural product (-)-parthenolide, its unnatural (+)-enantiomer, and diastereoisomers. Among all the isomers tested in cell culture, only (-)-parthenolide showed potent inhibition of microtubule detyrosination in living cells, confirming its exquisite selectivity on tubulin carboxypeptidase activity. On the other hand, the anti-inflammatory activity of the parthenolides was weaker and less selective with regard to compound stereochemistry.
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Affiliation(s)
- Robert R A Freund
- Institut für Organische Chemie und Makromolekulare Chemie , Friedrich-Schiller-Universität , Humboldtstr. 10 , 07743 Jena , Germany .
| | - Philipp Gobrecht
- Lehrstuhl für Zellphysiologie , Ruhr-Universität Bochum , Universitätsstr. 150, ND/4 , 44780 Bochum , Germany
| | - Zhigang Rao
- Institut für Pharmazie , Friedrich-Schiller-Universität , Philosophenweg 14 , 07743 Jena , Germany
| | - Jana Gerstmeier
- Institut für Pharmazie , Friedrich-Schiller-Universität , Philosophenweg 14 , 07743 Jena , Germany
| | - Robin Schlosser
- Institut für Organische Chemie und Makromolekulare Chemie , Friedrich-Schiller-Universität , Humboldtstr. 10 , 07743 Jena , Germany .
| | - Helmar Görls
- Institut für Anorganische Chemie und Analytische Chemie , Friedrich-Schiller-Universität , Humboldtstr. 8 , 07743 Jena , Germany
| | - Oliver Werz
- Institut für Pharmazie , Friedrich-Schiller-Universität , Philosophenweg 14 , 07743 Jena , Germany
| | - Dietmar Fischer
- Lehrstuhl für Zellphysiologie , Ruhr-Universität Bochum , Universitätsstr. 150, ND/4 , 44780 Bochum , Germany
| | - Hans-Dieter Arndt
- Institut für Organische Chemie und Makromolekulare Chemie , Friedrich-Schiller-Universität , Humboldtstr. 10 , 07743 Jena , Germany .
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19
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Nicolaou KC, Rigol S. The Role of Organic Synthesis in the Emergence and Development of Antibody–Drug Conjugates as Targeted Cancer Therapies. Angew Chem Int Ed Engl 2019; 58:11206-11241. [DOI: 10.1002/anie.201903498] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Indexed: 12/14/2022]
Affiliation(s)
- K. C. Nicolaou
- Department of ChemistryBioScience Research CollaborativeRice University 6100 Main Street Houston Texas 77005 USA
| | - Stephan Rigol
- Department of ChemistryBioScience Research CollaborativeRice University 6100 Main Street Houston Texas 77005 USA
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20
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Zhang F, Zhang Y, Tan Q, Lin L, Liu X, Feng X. Kinetic Resolution of Aziridines via Catalytic Asymmetric Ring-Opening Reaction with Mercaptobenzothiazoles. Org Lett 2019; 21:5928-5932. [PMID: 31334664 DOI: 10.1021/acs.orglett.9b02058] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A highly efficient kinetic resolution of racemic 2-acyl-3-aryl-N-tosylaziridines is achieved through a chiral Lewis acid promoted ring-opening reaction with 2-mercaptobenzothiazoles as the nucleophiles. The chiral N,N'-dioxide-lanthanum complex as catalyst and the 2-mercaptobenzothiazoles as active sulfur nucleophiles are the keys to the success of the reaction. A variety of enantioenriched β-amino thioethers and aziridines are obtained in good yields with good ee values.
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Affiliation(s)
- Fengcai Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Yu Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Qingfa Tan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072 , China
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21
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Nicolaou KC, Rigol S. Die Bedeutung der organischen Synthese bei der Entstehung und Entwicklung von Antikörper‐Wirkstoff‐Konjugaten als gezielte Krebstherapien. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- K. C. Nicolaou
- Department of ChemistryBioScience Research CollaborativeRice University 6100 Main Street Houston TX 77005 USA
| | - Stephan Rigol
- Department of ChemistryBioScience Research CollaborativeRice University 6100 Main Street Houston TX 77005 USA
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22
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Kuzniewski CN, Glauser S, Gaugaz FZ, Schiess R, Rodríguez‐Salarichs J, Vetterli S, Horlacher OP, Gertsch J, Redondo‐Horcajo M, Canales A, Jiménez‐Barbero J, Díaz JF, Altmann K. Synthesis, Profiling, and Bioactive Conformation of trans‐Cyclopropyl Epothilones. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Christian N. Kuzniewski
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical SciencesETH Zürich Vladimir-Prelog-Weg 4, HCI H405 CH-8093 Zürich
| | - Simon Glauser
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical SciencesETH Zürich Vladimir-Prelog-Weg 4, HCI H405 CH-8093 Zürich
| | - Fabienne Z. Gaugaz
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical SciencesETH Zürich Vladimir-Prelog-Weg 4, HCI H405 CH-8093 Zürich
| | - Raphael Schiess
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical SciencesETH Zürich Vladimir-Prelog-Weg 4, HCI H405 CH-8093 Zürich
| | - Javier Rodríguez‐Salarichs
- Centro de Investigaciones BiológicasConsejo Superior de Investigaciones Científicas, C/Ramiro de Maeztu 9 ES-28040 Madrid Spain
| | - Stefan Vetterli
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical SciencesETH Zürich Vladimir-Prelog-Weg 4, HCI H405 CH-8093 Zürich
| | - Oliver P. Horlacher
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical SciencesETH Zürich Vladimir-Prelog-Weg 4, HCI H405 CH-8093 Zürich
| | - Jürg Gertsch
- Institute of Biochemistry and Molecular MedicineUniversity of Bern Bühlstrasse 28 CH-3012 Bern Switzerland
| | - Mariano Redondo‐Horcajo
- Centro de Investigaciones BiológicasConsejo Superior de Investigaciones Científicas, C/Ramiro de Maeztu 9 ES-28040 Madrid Spain
| | - Angeles Canales
- Departamento de Química Orgánica I, Facultad de Ciencias QuímicasUniversidad Complutense de Madrid Av. Complutense ES-28040 Madrid Spain
| | - Jesús Jiménez‐Barbero
- CIC bioGUNE, Asociación Centro de Investigación Cooperativa en BiocienciasBizkaia Science and Technology Park building 801A ES-48160 Derio, Bizkaia Spain
- IkerbasqueBasque Foundation for Science Maria Diaz de Haro 3, 6 solairua ES-48013 Bilbao, Bizkaia Spain
- Department of Organic Chemistry II, Faculty of Science & TechnologyUniversity of the Basque Country, Barrio Sarriena s/n ES-48940 Leioa, Bizkaia Spain
| | - José Fernando Díaz
- Centro de Investigaciones BiológicasConsejo Superior de Investigaciones Científicas, C/Ramiro de Maeztu 9 ES-28040 Madrid Spain
| | - Karl‐Heinz Altmann
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical SciencesETH Zürich Vladimir-Prelog-Weg 4, HCI H405 CH-8093 Zürich
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23
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Dubovtsev AY, Dar'in DV, Kukushkin VY. Three‐Component [2+2+1] Gold(I)‐Catalyzed Oxidative Generation of Fully Substituted 1,3‐Oxazoles Involving Internal Alkynes. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900097] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Alexey Yu. Dubovtsev
- Saint Petersburg State University Universitetskaya Nab. 7/9 199034 Saint Petersburg Russian Federation
| | - Dmitry V. Dar'in
- Saint Petersburg State University Universitetskaya Nab. 7/9 199034 Saint Petersburg Russian Federation
| | - Vadim Yu. Kukushkin
- Saint Petersburg State University Universitetskaya Nab. 7/9 199034 Saint Petersburg Russian Federation
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24
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Nicolaou KC, Rigol S. Total Synthesis in Search of Potent Antibody-Drug Conjugate Payloads. From the Fundamentals to the Translational. Acc Chem Res 2019; 52:127-139. [PMID: 30575399 DOI: 10.1021/acs.accounts.8b00537] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The emergence and evolution of antibody-drug conjugates (ADCs) as targeted cancer therapies in recent years is a living example of the "magic bullet" concept of Paul Ehrlich, introduced by him more than a century ago. Consisting of three components, the antibody serving as the delivery system, the payload drug that kills the cancer cell, and the chemical linker through which the payload is attached to the antibody, ADCs represent a currently hotly pursued paradigm of targeted cancer therapies. While the needed monoclonal antibody falls in the domains of biology and biochemistry, the potent payload and the linker belong to the realm of chemistry. Naturally occurring molecules and their derivatives endowed with high cytotoxic properties have proven to be useful payloads for the first approved ADCs (i.e., Mylotarg, Adcetris, Kadcyla, and Besponsa). The latest approaches and intensifying activities in this new paradigm of cancer therapy demands a variety of payloads with different mechanisms of action in order to address the medical needs for the various types of cancers, challenging synthetic organic chemists to enrich the library of potential payloads. Total synthesis of natural and designed molecules not only provides a powerful avenue to replicate rare naturally occurring compounds in the laboratory but also offers a unique opportunity to rationally design and synthesize analogues thereof for biological evaluation and optimization of ADC payloads. In this Account, we describe our efforts in this area highlighting a number of total synthesis endeavors through which we rendered scarce naturally occurring molecules readily available for biological evaluations and, most importantly, employed the developed synthetic strategies and methods to construct, otherwise unavailable or difficult to reach, designed analogues of these molecules. Specifically, we summarize the total syntheses of natural and designed molecules of the calicheamicin, uncialamycin, tubulysin, trioxacarcin, epothilone, shishijimicin, namenamicin, thailanstatin, and disorazole families of compounds and demonstrate how these studies led to the discovery of analogues of higher potencies, yet some of them possessing lower complexities than their parent compounds as potential ADC payloads. The highlighted examples showcase the continuing impact of total synthesis of natural products and their analogues on modern medicine, including the so-called biologics and should prove useful and inspirational in advancing both the fields of total synthesis and biomedical research and the drug discovery and development process.
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Affiliation(s)
- Kyriacos C. Nicolaou
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Stephan Rigol
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
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25
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Trost BM, Bai WJ, Stivala CE, Hohn C, Poock C, Heinrich M, Xu S, Rey J. Enantioselective Synthesis of des-Epoxy-Amphidinolide N. J Am Chem Soc 2018; 140:17316-17326. [DOI: 10.1021/jacs.8b11827] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Wen-Ju Bai
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Craig E. Stivala
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Christoph Hohn
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Caroline Poock
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Marc Heinrich
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Shiyan Xu
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Jullien Rey
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
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26
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Wani IA, Das S, Mondal S, Ghorai MK. Stereoselective Construction of Pyrazinoindoles and Oxazinoindoles via Ring-Opening/Pictet-Spengler Reaction of Aziridines and Epoxides with 3-Methylindoles and Carbonyls. J Org Chem 2018; 83:14553-14567. [DOI: 10.1021/acs.joc.8b02339] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Imtiyaz Ahmad Wani
- Department of Chemistry, Indian Institute of Technology, 208016 Kanpur, Uttar Pradesh, India
| | - Subhomoy Das
- Department of Chemistry, Indian Institute of Technology, 208016 Kanpur, Uttar Pradesh, India
| | - Shobhan Mondal
- Department of Chemistry, Indian Institute of Technology, 208016 Kanpur, Uttar Pradesh, India
| | - Manas K. Ghorai
- Department of Chemistry, Indian Institute of Technology, 208016 Kanpur, Uttar Pradesh, India
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27
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Yin L, Zhang D, Xing J, Wang Y, Wu C, Lu T, Chen Y, Hayashi T, Dou X. Access to Chiral HWE Reagents by Rhodium-Catalyzed Asymmetric Arylation of γ,δ-Unsaturated β-Ketophosphonates. J Org Chem 2018; 83:5869-5875. [PMID: 29715022 DOI: 10.1021/acs.joc.8b00952] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Asymmetric arylation of γ,δ-unsaturated β-ketophosphonates with arylboronic acids is reported. By using the ( R)-diene* ligated rhodium(I) chloride complex as a catalyst under none basic conditions, the corresponding β-ketophosphonates bearing a δ-chiral center were obtained in high yields (up to 99%) with good to excellent enantioselectivities (up to >99% ee). The enantioenriched products can be readily converted to diverse chiral β'-aryl enones by the Horner-Wadsworth-Emmons reaction.
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Affiliation(s)
| | | | | | | | | | - Tao Lu
- State Key Laboratory of Natural Medicines , China Pharmaceutical University , 24 Tongjiaxiang , Nanjing 210009 , China
| | | | - Tamio Hayashi
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , 21 Nanyang Link , Singapore 637371 , Singapore
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28
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Sabir S, Kumar G, Verma VP, Jat JL. Aziridine Ring Opening: An Overview of Sustainable Methods. ChemistrySelect 2018. [DOI: 10.1002/slct.201800170] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shekh Sabir
- Department of Chemistry; Baba Saheb Bhimrao Ambedkar University (A Central University) VidyaVihar; Raebareli Road Lucknow 226025 India
| | | | | | - Jawahar L. Jat
- Department of Chemistry; Baba Saheb Bhimrao Ambedkar University (A Central University) VidyaVihar; Raebareli Road Lucknow 226025 India
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29
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Alihodžić S, Bukvić M, Elenkov IJ, Hutinec A, Koštrun S, Pešić D, Saxty G, Tomašković L, Žiher D. Current Trends in Macrocyclic Drug Discovery and beyond -Ro5. PROGRESS IN MEDICINAL CHEMISTRY 2018; 57:113-233. [DOI: 10.1016/bs.pmch.2018.01.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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30
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Sabir S, Kumar G, Jat JL. O-Substituted hydroxyl amine reagents: an overview of recent synthetic advances. Org Biomol Chem 2018; 16:3314-3327. [DOI: 10.1039/c8ob00146d] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Reagents derived from oxygen-substituted hydroxylamine facilitate stereo- and regioselective C–N, N–N, O–N, and S–N bond-formation reactions and intra-molecular cyclizations without any expensive metal catalysts. These remarkable transformations are discussed in this review.
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Affiliation(s)
- Shekh Sabir
- Department of Chemistry
- Baba Saheb Bhimrao Ambedkar University (a Central University)
- Vidya Vihar
- Lucknow 226025
- India
| | | | - Jawahar L. Jat
- Department of Chemistry
- Baba Saheb Bhimrao Ambedkar University (a Central University)
- Vidya Vihar
- Lucknow 226025
- India
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