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Stockhammer L, Radetzky M, Khatoon SS, Bechmann M, Waser M. Chiral Lewis Base-Catalysed Asymmetric Syntheses of Benzo-fused ϵ-Lactones. European J Org Chem 2023; 26:e202300704. [PMID: 38601860 PMCID: PMC11005097 DOI: 10.1002/ejoc.202300704] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/24/2023] [Indexed: 04/12/2024]
Abstract
We herein report a two-step protocol for the asymmetric synthesis of novel chiral benzofused ϵ-lactones starting from O-protected hydroxymethyl-para-quinone methides and activated aryl esters. By using chiral isothiourea Lewis base catalysts a broad variety of differently substituted products could be obtained in yields of around 50 % over both steps with high levels of enantioselectivities, albeit low diastereoselectivities only.
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Affiliation(s)
- Lotte Stockhammer
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstrasse 694040LinzAustria
| | - Maximilian Radetzky
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstrasse 694040LinzAustria
| | - Syeda Sadia Khatoon
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstrasse 694040LinzAustria
| | - Matthias Bechmann
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstrasse 694040LinzAustria
| | - Mario Waser
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstrasse 694040LinzAustria
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2
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Ren H, Zhang Z, Cheng X, Zou Z, Chen X, He C. Injectable, self-healing hydrogel adhesives with firm tissue adhesion and on-demand biodegradation for sutureless wound closure. SCIENCE ADVANCES 2023; 9:eadh4327. [PMID: 37585520 PMCID: PMC10431709 DOI: 10.1126/sciadv.adh4327] [Citation(s) in RCA: 38] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 07/14/2023] [Indexed: 08/18/2023]
Abstract
Tissue adhesives have garnered extensive interest as alternatives and supplements to sutures, whereas major challenges still remain, including weak tissue adhesion, inadequate biocompatibility, and uncontrolled biodegradation. Here, injectable and biocompatible hydrogel adhesives are developed via catalyst-free o-phthalaldehyde/amine (hydrazide) cross-linking reaction. The hydrogels demonstrate rapid and firm adhesion to various tissues, and an o-phthalaldehyde-mediated tissue adhesion mechanism is established. The hydrogel adhesives show controlled degradation profiles of 6 to 22 weeks in vivo through the incorporation of disulfide bonds into hydrogel network. In liver and blood vessel injury, the hydrogels effectively seal the incisions and rapidly stop bleeding. In rat and rabbit models of full-thickness skin incision, the hydrogel adhesives quickly close the incisions and accelerate wound healing, which exhibit efficacies superior to those of commercially available fibrin glue and cyanoacrylate glue. Thus, the hydrogel adhesives show great potential for sutureless wound closure, hemostasis sealing, and prevention of leakage in surgical applications.
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Affiliation(s)
- Hui Ren
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhen Zhang
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xueliang Cheng
- Department of Spinal Surgery, The Second Hospital of Jilin University, Changchun, Jilin 130014, China
| | - Zheng Zou
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xuesi Chen
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Chaoliang He
- CAS Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
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3
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Jie Z, Liu J, Ying Y, Yang H. O-phthalaldehyde assisted surface enhanced Raman spectroscopy selective determination of trace homocysteine in serum. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 287:122048. [PMID: 36368268 DOI: 10.1016/j.saa.2022.122048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 10/11/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
High plasma homocysteine (Hcy) levels may indicate cardiovascular disease. However, sensitive and selective determination of Hcy remains a major challenge. Herein, we present a sensing strategy for Hcy by surface enhanced Raman scattering (SERS) method along with a specific reaction of o-phthalaldehyde (OPA) and Hcy. The obtained adduct 2-(1-carboxyl-3-thiopropyl)-1-isoindolinone (Hcy-OPA) can be directly detected by SERS using gold nanoparticles (Au NPs) as the substrate. The developed SERS method displays superior sensitivity (low detection limit of 2.50 × 10-12 mol L-1) with a broad linear range (5.00 × 10-10 -5.00 × 10-6 mol L-1). As a proof of real application, it can be used to detect Hcy in bovine serum samples with a concentration as low as 5.00 × 10-9 mol L-1, which is free from the interference of the other amino acids and glutathione.
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Affiliation(s)
- Zhishun Jie
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Jia Liu
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Ye Ying
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China.
| | - Haifeng Yang
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China.
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4
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Guo L, Zhou Y, Nie X, Zhang Z, Zhang Z, Li C, Wang T, Tang W. A platform for the rapid synthesis of proteolysis targeting chimeras (Rapid-TAC) under miniaturized conditions. Eur J Med Chem 2022; 236:114317. [PMID: 35397401 DOI: 10.1016/j.ejmech.2022.114317] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/19/2022] [Accepted: 03/22/2022] [Indexed: 11/29/2022]
Abstract
Proteolysis targeting chimera (PROTAC) is one of the most frequently used technologies for targeted protein degradation. PROTACs are composed of target protein ligand, E3 ligase ligand and a linker between them. Traditional methods for the development of PROTACs involve step-by-step synthesis and are time consuming. Herein, we report a platform for the rapid synthesis of PROTACs (Rapid-TAC) via a traceless coupling reaction between ortho-phthalaldehyde (OPA) motif on the ligand of targeting protein and an amine fucntional group on the commercially available partial PROTAC library that is composed of different E3 ligase ligands and various types and lengths of linkers. Under our optimized miniaturized conditions, the full PROTACs can be synthesized in a high throughput manner and the products can be directly used for screening without any further manipulations including purification. We demonstrated the utility of this platform by quickly identifying active degraders for androgen receptor (AR) and BRD4 with DC50 of 41.9 nM and 8.9 nM, respectively. It is expected that this Rapid-TAC platform can be easily extended to many other targets, thus lowering the barrier to access this novel modelity for small molecule drug discovery and faciliate structure activity relationship studies.
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Affiliation(s)
- Le Guo
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Yaxian Zhou
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Xueqing Nie
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Zhongrui Zhang
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Zhen Zhang
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Chunrong Li
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Taobo Wang
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Weiping Tang
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA; Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA.
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5
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Samanta S, Ali SA, Bera A, Giri S, Samanta K. Transition metal-free advanced synthetic approaches for isoindolinones and their fused analogues. NEW J CHEM 2022. [DOI: 10.1039/d2nj00475e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The transition metal-free synthetic protocols of isoindolinone and its fused analogues are highlighted in this review since 2007 to 2021.
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Affiliation(s)
| | - Sk Asraf Ali
- Department of Chemistry, Bidhannagar College, Kolkata 700064, India
| | - Anirban Bera
- Department of Chemistry, Bidhannagar College, Kolkata 700064, India
| | - Soumen Giri
- Department of Chemistry, C.V. Raman Global University, Bhubaneswar 752054, India
| | - Khokan Samanta
- Department of Chemistry, Haldia Government College, Haldia, India
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Natural Compounds Isolated from Stachybotrys chartarum Are Potent Inhibitors of Human Protein Kinase CK2. Molecules 2021; 26:molecules26154453. [PMID: 34361605 PMCID: PMC8347608 DOI: 10.3390/molecules26154453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/16/2021] [Accepted: 07/20/2021] [Indexed: 11/17/2022] Open
Abstract
A large number of secondary metabolites have been isolated from the filamentous fungus Stachybotrys chartarum and have been described before. Fourteen of these natural compounds were evaluated in vitro in the present study for their inhibitory activity towards the cancer target CK2. Among these compounds, stachybotrychromene C, stachybotrydial acetate and acetoxystachybotrydial acetate turned out to be potent inhibitors with IC50 values of 0.32 µM, 0.69 µM and 1.86 µM, respectively. The effects of these three compounds on cell proliferation, growth and viability of MCF7 cells, representing human breast adenocarcinoma as well as A427 (human lung carcinoma) and A431 (human epidermoid carcinoma) cells, were tested using EdU assay, IncuCyte® live-cell imaging and MTT assay. The most active compound in inhibiting MCF7 cell proliferation was acetoxystachybotrydial acetate with an EC50 value of 0.39 µM. In addition, acetoxystachybotrydial acetate turned out to inhibit the growth of all three cell lines completely at a concentration of 1 µM. In contrast, cell viability was impaired only moderately, to 37%, 14% and 23% in MCF7, A427 and A431 cells, respectively.
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Bartlett ME, Shuler SA, Rose DJ, Gilbert LM, Hegab RA, Lawton TJ, Messersmith RE. Paintable proteins: biofunctional coatings via covalent incorporation of proteins into a polymer network. NEW J CHEM 2021. [DOI: 10.1039/d1nj04687j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Attaching proteins to surfaces while maintaining bioactivity is a promising avenue for developing new functional materials.
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Affiliation(s)
- Mairead E. Bartlett
- Research and Exploratory Development Department, The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, Maryland 20723, USA
| | - Scott A. Shuler
- Research and Exploratory Development Department, The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, Maryland 20723, USA
| | - Daniel J. Rose
- Research and Exploratory Development Department, The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, Maryland 20723, USA
| | - Lindsey M. Gilbert
- Research and Exploratory Development Department, The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, Maryland 20723, USA
| | - Rachel A. Hegab
- Research and Exploratory Development Department, The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, Maryland 20723, USA
| | - Thomas J. Lawton
- Research and Exploratory Development Department, The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, Maryland 20723, USA
| | - Reid E. Messersmith
- Research and Exploratory Development Department, The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, Maryland 20723, USA
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Schneider F, Samarin K, Zanella S, Gaich T. Total synthesis of the complex taxane diterpene canataxpropellane. Science 2020; 367:676-681. [DOI: 10.1126/science.aay9173] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 01/14/2020] [Indexed: 11/02/2022]
Abstract
Canataxpropellane belongs to the medicinally important taxane diterpene family. The most prominent congener, Taxol, is one of the most commonly used anticancer agent in clinics today. Canataxpropellane exhibits a taxane skeleton with three additional transannular C–C bonds, resulting in a total of six contiguous quaternary carbons, of which four are located on a cyclobutane ring. Unfortunately, isolation of canataxpropellane from natural sources is inefficient. Here, we report a total synthesis of (–)-canataxpropellane in 26 steps and 0.5% overall yield from a known intermediate corresponding to 29 steps from commercial material. The core structure of the (–)-canataxpropellane (2) was assembled in two steps using a Diels–Alder/ortho-alkene-arene photocycloaddition sequence. Enantioselectivity was introduced by designing chiral siloxanes to serve as auxiliaries in the Diels–Alder reaction.
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Affiliation(s)
- Fabian Schneider
- Department of Chemistry, University of Konstanz, 78467 Konstanz, Germany
| | - Konstantin Samarin
- Department of Chemistry, University of Konstanz, 78467 Konstanz, Germany
| | - Simone Zanella
- Department of Chemistry, University of Konstanz, 78467 Konstanz, Germany
| | - Tanja Gaich
- Department of Chemistry, University of Konstanz, 78467 Konstanz, Germany
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9
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Synthesis of 1,2-phenylenedimethanols by base-promoted reduction of isobenzofuran-1(3H)-ones with silane. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.11.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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10
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Jagels A, Lindemann V, Ulrich S, Gottschalk C, Cramer B, Hübner F, Gareis M, Humpf HU. Exploring Secondary Metabolite Profiles of Stachybotrys spp. by LC-MS/MS. Toxins (Basel) 2019; 11:toxins11030133. [PMID: 30818881 PMCID: PMC6468463 DOI: 10.3390/toxins11030133] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 02/19/2019] [Accepted: 02/22/2019] [Indexed: 01/07/2023] Open
Abstract
The genus Stachybotrys produces a broad diversity of secondary metabolites, including macrocyclic trichothecenes, atranones, and phenylspirodrimanes. Although the class of the phenylspirodrimanes is the major one and consists of a multitude of metabolites bearing various structural modifications, few investigations have been carried out. Thus, the presented study deals with the quantitative determination of several secondary metabolites produced by distinct Stachybotrys species for comparison of their metabolite profiles. For that purpose, 15 of the primarily produced secondary metabolites were isolated from fungal cultures and structurally characterized in order to be used as analytical standards for the development of an LC-MS/MS multimethod. The developed method was applied to the analysis of micro-scale extracts from 5 different Stachybotrys strains, which were cultured on different media. In that process, spontaneous dialdehyde/lactone isomerization was observed for some of the isolated secondary metabolites, and novel stachybotrychromenes were quantitatively investigated for the first time. The metabolite profiles of Stachybotrys species are considerably influenced by time of growth and substrate availability, as well as the individual biosynthetic potential of the respective species. Regarding the reported adverse effects associated with Stachybotrys growth in building environments, combinatory effects of the investigated secondary metabolites should be addressed and the role of the phenylspirodrimanes re-evaluated in future research.
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Affiliation(s)
- Annika Jagels
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany.
| | - Viktoria Lindemann
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany.
| | - Sebastian Ulrich
- Chair of Food Safety, Veterinary Faculty, Ludwig-Maximilians-Universität München, 85764 Oberschleißheim, Germany.
| | - Christoph Gottschalk
- Chair of Food Safety, Veterinary Faculty, Ludwig-Maximilians-Universität München, 85764 Oberschleißheim, Germany.
| | - Benedikt Cramer
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany.
| | - Florian Hübner
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany.
| | - Manfred Gareis
- Chair of Food Safety, Veterinary Faculty, Ludwig-Maximilians-Universität München, 85764 Oberschleißheim, Germany.
| | - Hans-Ulrich Humpf
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany.
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Ali SA, Bhaumik S, Jana A, Manna SK, Ikbal M, Mandal A, Bera A, Jana A, Samanta S. NaN
3
/NH
4
Cl‐Promoted Aza‐Cyclization: A Convenient Route for Bio‐Active Diverse Isoindolinone Derivatives. ChemistrySelect 2018. [DOI: 10.1002/slct.201802696] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sk Asraf Ali
- Department of ChemistryBidhannagar College Kolkata 700064 India
| | - Sanjay Bhaumik
- Department of ChemistryBidhannagar College Kolkata 700064 India
| | - Akash Jana
- Indian Institute of Science Education and Research Kolkata Nadia 741246 India
| | | | | | - Arabinda Mandal
- Department of ChemistryBidhannagar College Kolkata 700064 India
| | - Anirban Bera
- Department of ChemistryBidhannagar College Kolkata 700064 India
| | - Avijit Jana
- Centre for Chemical BiologyCSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
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