1
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Anosike IS, Beng TK. Harnessing the 1,3-azadiene-anhydride reaction for the regioselective and stereocontrolled synthesis of lactam-fused bromotetrahydropyrans by bromoetherification of lactam-tethered trisubstituted tertiary alkenols. RSC Adv 2024; 14:18501-18507. [PMID: 38860240 PMCID: PMC11163878 DOI: 10.1039/d4ra02523g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 06/05/2024] [Indexed: 06/12/2024] Open
Abstract
Halo-cycloetherification of lactam-tethered alkenols enables the construction of oxygen-heterocycles that are fused to nitrogen heterocycles via intramolecular halonium-induced nucleophilic addition. Specifically, tetrahydropyrans (THPs) that are fused to a nitrogen heterocycle constitute the core of several bioactive molecules, including tachykinin receptor antagonists and alpha-1 adrenergic antagonists. Although the literature is replete with successful examples of the halo-cycloetherification of simple mono- or disubstituted primary alkenols, methods for the modular, efficient, regioselective, and stereocontrolled intramolecular haloetherification of sterically encumbered trisubstituted tertiary alkenols are rare. Here, we describe a simple intramolecular bromoetherification strategy that meets these benchmarks and proceeds with exclusive 6-endo regioselectivity. The transformation employs mild and water-tolerant conditions, which bodes well for late-stage diversification. The hindered ethers contain four contiguous stereocenters as well as one halogen-bearing tetrasubstituted stereocenter.
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Affiliation(s)
- Ifeyinwa S Anosike
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Timothy K Beng
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
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2
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Seal S, Trapotsi MA, Spjuth O, Singh S, Carreras-Puigvert J, Greene N, Bender A, Carpenter AE. A Decade in a Systematic Review: The Evolution and Impact of Cell Painting. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.04.592531. [PMID: 38766203 PMCID: PMC11100607 DOI: 10.1101/2024.05.04.592531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
High-content image-based assays have fueled significant discoveries in the life sciences in the past decade (2013-2023), including novel insights into disease etiology, mechanism of action, new therapeutics, and toxicology predictions. Here, we systematically review the substantial methodological advancements and applications of Cell Painting. Advancements include improvements in the Cell Painting protocol, assay adaptations for different types of perturbations and applications, and improved methodologies for feature extraction, quality control, and batch effect correction. Moreover, machine learning methods recently surpassed classical approaches in their ability to extract biologically useful information from Cell Painting images. Cell Painting data have been used alone or in combination with other - omics data to decipher the mechanism of action of a compound, its toxicity profile, and many other biological effects. Overall, key methodological advances have expanded Cell Painting's ability to capture cellular responses to various perturbations. Future advances will likely lie in advancing computational and experimental techniques, developing new publicly available datasets, and integrating them with other high-content data types.
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Affiliation(s)
- Srijit Seal
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, United Kingdom
| | - Maria-Anna Trapotsi
- Imaging and Data Analytics, Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca, 1 Francis Crick Avenue, Cambridge, CB2 0AA, United Kingdom
| | - Ola Spjuth
- Department of Pharmaceutical Biosciences and Science for Life Laboratory, Uppsala University, Box 591, SE-75124, Uppsala, Sweden
| | - Shantanu Singh
- Imaging and Data Analytics, Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca, 1 Francis Crick Avenue, Cambridge, CB2 0AA, United Kingdom
| | - Jordi Carreras-Puigvert
- Department of Pharmaceutical Biosciences and Science for Life Laboratory, Uppsala University, Box 591, SE-75124, Uppsala, Sweden
| | - Nigel Greene
- Imaging and Data Analytics, Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca, 35 Gatehouse Drive, Waltham, MA 02451, USA
| | - Andreas Bender
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, United Kingdom
| | - Anne E. Carpenter
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States
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3
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Mohammadikia P, Ramezanpour S, Shiri P, Dehaen W, Achten L. A Highly Efficient Strategy for One-Pot and Pseudo-Six-Component Synthesis of Hexahydroquinolines. ACS OMEGA 2024; 9:4466-4473. [PMID: 38313473 PMCID: PMC10832005 DOI: 10.1021/acsomega.3c06264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/24/2023] [Accepted: 12/25/2023] [Indexed: 02/06/2024]
Abstract
In this study, a homogeneous acid-catalyzed reaction of a series of benzaldehydes, benzylamines, and Meldrum's acid was presented, allowing the novel one-pot and multicomponent synthesis of hexahydroquinolines with high stereoselectivity. The current strategy has advantages including high regioselectivity, good efficiency, reasonable diversity, utilization of an inexpensive and safe catalyst, and easy purification of products by simple recrystallization. The current reaction utilizes 2 equiv of Meldrum's acid, 3 equiv of benzaldehyde derivatives, and one equiv of amine derivatives to yield (4'S,5'S,7'S)-1'-benzyl-2,2-dimethyl-4',5',7'-triphenyl-3',4',7',8'-tetrahydro-1'H-spiro[[1,3]dioxane-5,6'-quinoline]-2',4,6(5'H)-trione derivatives.
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Affiliation(s)
- Parvin Mohammadikia
- Department
of Chemistry, K. N. Toosi University of
Technology, P.O. Box
15875-4416, Tehran 19697, Iran
| | - Sorour Ramezanpour
- Department
of Chemistry, K. N. Toosi University of
Technology, P.O. Box
15875-4416, Tehran 19697, Iran
| | - Pezhman Shiri
- Department
of Chemistry, K. N. Toosi University of
Technology, P.O. Box
15875-4416, Tehran 19697, Iran
| | - Wim Dehaen
- Molecular
Design and Synthesis, Department of Chemistry, KU Leuven, Leuven 3000, Belgium
| | - Linde Achten
- Molecular
Design and Synthesis, Department of Chemistry, KU Leuven, Leuven 3000, Belgium
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4
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Karale UB, Shinde A, Gaikwad VR, Kalari S, Gourishetti K, Radhakrishnan M, Poornachandra Y, Amanchy R, Chakravarty S, Andugulapati SB, Rode HB. Iron mediated reductive cyclization/oxidation for the generation of chemically diverse scaffolds: An approach in drug discovery. Bioorg Chem 2023; 139:106698. [PMID: 37418784 DOI: 10.1016/j.bioorg.2023.106698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/03/2023] [Accepted: 06/20/2023] [Indexed: 07/09/2023]
Abstract
Chemically diverse scaffolds represent a main source of biologically important starting points in drug discovery. Herein, we report the development of such diverse scaffolds from nitroarene/ nitro(hetero)arenes using a key synthetic strategy. In a pilot-scale study, the synthesis of 10 diverse scaffolds was achieved. The 1,7-phenanthroline, thiazolo[5,4-f]quinoline, 2,3-dihydro-1H-pyrrolo[2,3-g]quinoline, pyrrolo[3,2-f]quinoline, 1H-[1,4]oxazino[3,2-g]quinolin-2(3H)-one, [1,2,5]oxadiazolo[3,4-h]quinoline, 7H-pyrido[2,3-c]carbazole, 3H-pyrazolo[4,3-f]quinoline, pyrido[3,2-f]quinoxaline were obtained from nitro hetero arenes in ethanol using iron-acetic acid treatment followed by reaction under oxygen atmosphere. This diverse library is compliant with the rule of five for drug-likeness. The mapping of chemical space represented by these scaffolds revealed a significant contribution to the underrepresented chemical diversity. Crucial to the development of this approach was the mapping of biological space covered by these scaffolds which revealed neurotropic and prophylactic anti-inflammatory activities. In vitro, neuro-biological assays revealed that compounds 14a and 15a showed excellent neurotropic potential and neurite growth compared to controls. Further, anti-inflammatory assays (in vitro and in vivo models) exhibited that Compound 16 showed significant anti-inflammatory activity by attenuating the LPS-induced TNF-α and CD68 levels by modulating the NFkB pathway. In addition, treatment with compound 16 significantly ameliorated the LPS-induced sepsis conditions, and pathological abnormalities (in lung and liver tissues) and improved the survival of the rats compared to LPS control. Owing to their chemical diversity along with bioactivities, it is envisaged that new quality pre-clinical candidates will be generated in the above therapeutic areas using identified leads.
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Affiliation(s)
- Uttam B Karale
- Department of Natural Products and Medicinal Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India
| | - Akash Shinde
- Department of Natural Products and Medicinal Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India
| | - Vikas R Gaikwad
- Department of Natural Products and Medicinal Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India
| | - Saradhi Kalari
- Department of Natural Products and Medicinal Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India
| | - Karthik Gourishetti
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India; Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India
| | - Mydhili Radhakrishnan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India; Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India
| | - Yedla Poornachandra
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India
| | - Ramars Amanchy
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India
| | - Sumana Chakravarty
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India; Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India
| | - Sai Balaji Andugulapati
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India; Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India
| | - Haridas B Rode
- Department of Natural Products and Medicinal Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201 002, India.
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5
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Suresh Babu AR, Sharma A, Athira MP, Alajangi HK, Naresh Raj AR, Gartia J, Singh G, Barnwal RP. Evaluation of antibiofilm properties of dehydroacetic acid (DHA) grafted spiro-oxindolopyrrolidines synthesized via multicomponent 1,3-dipolar cycloaddition reaction. Sci Rep 2023; 13:15289. [PMID: 37714933 PMCID: PMC10504327 DOI: 10.1038/s41598-023-42528-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 09/11/2023] [Indexed: 09/17/2023] Open
Abstract
The current work involves the use of dehydroacetic acid based chalcone derivatives for the synthesis of spirooxindole grafted pyrrolidine moieties. All the synthesized compounds have been characterized using spectroscopic techniques such as NMR (1H-NMR and 13C-NMR), IR, mass and elemental analysis. Molecular mechanics studies were performed to comprehend the regioselectivity in the product formation. Molecular docking of the synthesized compounds was performed with few bacterial proteins of Bacillus subtilis and Pseudomonas aeruginosa responsible for biofilm formation followed by molecular dynamics simulations with the potential lead compound. Further, to corroborate the results obtained via in silico study, anti-biofilm activity etc. of the synthesized compounds (4a-e) was checked for effectiveness against biofilm formation. Taken together, this study opens up to explore these compounds' multiple roles in diverse fields in the arena of medical sciences.
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Affiliation(s)
| | - Akanksha Sharma
- Department of Biophysics, Panjab University, Chandigarh, 160014, India
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - M P Athira
- Department of Chemistry, IISER, Mohali, Sahibzada Ajit Singh Nagar, Punjab, 140306, India
| | - Hema K Alajangi
- Department of Biophysics, Panjab University, Chandigarh, 160014, India
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - A R Naresh Raj
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College, Arumbakkam, Chennai, 600106, India
| | - Janeka Gartia
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, Odisha, 751024, India
| | - Gurpal Singh
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India.
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6
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Beng TK, Eichwald J, Fessenden J, Quigley K, Sharaf S, Jeon N, Do M. Regiodivergent synthesis of sulfone-tethered lactam-lactones bearing four contiguous stereocenters. RSC Adv 2023; 13:21250-21258. [PMID: 37456540 PMCID: PMC10340014 DOI: 10.1039/d3ra03800a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023] Open
Abstract
Sulfone-tethered lactones/amides/amines display a diverse spectrum of biological activities, including anti-psychotic and anti-hypertensive. Sulfones are also widely present in functional materials and fragrances. We therefore reasoned that a regiodivergent and stereocontrolled strategy that merges the sulfone, lactone, and lactam motifs would likely lead to the discovery of new pharmacophores and functional materials. Here, we report mild conditions for the sulfonyllactonization of γ-lactam-tethered 5-aryl-4(E)-pentenoic acids. The annulation is highly modular, chemoselective, and diastereoselective. With respect to regioselectivity, trisubstituted alkenoic acids display a preference for 5-exo-trig cyclization whereas disubstituted alkenoic acids undergo exclusive 6-endo-trig cyclization. The lactam-fused sulfonyllactones bear angular quaternary as well as four contiguous stereocenters. The products are post-modifiable, especially through a newly developed Co-catalyzed reductive cross-coupling protocol.
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Affiliation(s)
- Timothy K Beng
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Jane Eichwald
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Jolyn Fessenden
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Kaiden Quigley
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Sapna Sharaf
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Nanju Jeon
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Minh Do
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
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7
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Okolo EA, Pahl A, Sievers S, Pask CM, Nelson A, Marsden SP. Scaffold Remodelling of Diazaspirotricycles Enables Synthesis of Diverse sp 3 -Rich Compounds With Distinct Phenotypic Effects. Chemistry 2023; 29:e202203992. [PMID: 36722618 PMCID: PMC10946999 DOI: 10.1002/chem.202203992] [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: 12/21/2022] [Revised: 01/31/2023] [Accepted: 01/31/2023] [Indexed: 02/02/2023]
Abstract
A 'top down' scaffold remodelling approach to library synthesis was applied to spirotricyclic ureas prepared by a complexity-generating oxidative dearomatisation. Eighteen structurally-distinct, sp3 -rich scaffolds were accessed from the parent tricycle through ring addition, cleavage and expansion strategies. Biological screening of a small compound library based on these scaffolds using the cell-painting assay demonstrated distinctive phenotypic responses engendered by different library members, illustrating the functional as well as structural diversity of the compounds.
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Affiliation(s)
| | - Axel Pahl
- Max-Planck Institute of Molecular PhysiologyDepartment of Chemical BiologyOtto-Hahn-Strasse 11Dortmund44227Germany
| | - Sonja Sievers
- Max-Planck Institute of Molecular PhysiologyDepartment of Chemical BiologyOtto-Hahn-Strasse 11Dortmund44227Germany
| | | | - Adam Nelson
- School of ChemistryUniversity of LeedsLeedsLS2 9JTUK
- Astbury Centre for Structural Molecular BiologyUniversity of LeedsLeedsLS2 9JTUK
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8
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Whitmarsh-Everiss T, Wang Z, Hauberg Hansen C, Depta L, Sassetti E, Rafn Dan O, Pahl A, Sievers S, Laraia L. Identification of Biologically Diverse Tetrahydronaphthalen-2-ols through the Synthesis and Phenotypic Profiling of Chemically Diverse, Estradiol-Inspired Compounds. Chembiochem 2023; 24:e202200555. [PMID: 36594441 DOI: 10.1002/cbic.202200555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 01/02/2023] [Accepted: 01/02/2023] [Indexed: 01/04/2023]
Abstract
Combining natural product fragments to design new scaffolds with unprecedented bioactivity is a powerful strategy for the discovery of tool compounds and potential therapeutics. However, the choice of fragments to couple and the biological screens to employ remain open questions in the field. By choosing a primary fragment containing the A/B ring system of estradiol and fusing it to nine different secondary fragments, we were able to identify compounds that modulated four different phenotypes: inhibition of autophagy and osteoblast differentiation, as well as potassium channel and tubulin modulation. The latter two were uncovered by using unbiased morphological profiling with a cell-painting assay. The number of hits and variety in bioactivity discovered validates the use of recombining natural product fragments coupled to phenotypic screening for the rapid identification of biologically diverse compounds.
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Affiliation(s)
- Thomas Whitmarsh-Everiss
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800, Kgs Lyngby, Denmark
| | - Zhou Wang
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800, Kgs Lyngby, Denmark
| | - Cecilie Hauberg Hansen
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800, Kgs Lyngby, Denmark
| | - Laura Depta
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800, Kgs Lyngby, Denmark
| | - Elisa Sassetti
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800, Kgs Lyngby, Denmark
| | - Oliver Rafn Dan
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800, Kgs Lyngby, Denmark
| | - Axel Pahl
- Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, Dortmund, 44227, Germany
| | - Sonja Sievers
- Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, Dortmund, 44227, Germany
| | - Luca Laraia
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800, Kgs Lyngby, Denmark
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9
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Li S, Fan G, Li X, Cai Y, Liu R. Modulation of type I interferon signaling by natural products in the treatment of immune-related diseases. Chin J Nat Med 2023; 21:3-18. [PMID: 36641230 DOI: 10.1016/s1875-5364(23)60381-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Indexed: 01/15/2023]
Abstract
Type I interferon (IFN) is considered as a bridge between innate and adaptive immunity. Proper activation or inhibition of type I IFN signaling is essential for host defense against pathogen invasion, tumor cell proliferation, and overactive immune responses. Due to intricate and diverse chemical structures, natural products and their derivatives have become an invaluable source inspiring innovative drug discovery. In addition, some natural products have been applied in clinical practice for infection, cancer, and autoimmunity over thousands of years and their promising curative effects and safety have been well-accepted. However, whether these natural products are primarily targeting type I IFN signaling and specific molecular targets involved are not fully elucidated. In the current review, we thoroughly summarize recent advances in the pharmacology researches of natural products for their type I IFN activity, including both agonism/activation and antagonism/inhibition, and their potential application as therapies. Furthermore, the source and chemical nature of natural products with type I IFN activity are highlighted and their specific molecular targets in the type I IFN pathway and mode of action are classified. In conclusion, natural products possessing type I IFN activity represent promising therapeutic strategies and have a bright prospect in the treatment of infection, cancer, and autoimmune diseases.
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Affiliation(s)
- Shuo Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Guifang Fan
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Xiaojiaoyang Li
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Yajie Cai
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Runping Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China.
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10
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Hunyadi A, Agbadua OG, Takács G, Balogh GT. Scavengome of an antioxidant. VITAMINS AND HORMONES 2022; 121:81-108. [PMID: 36707145 DOI: 10.1016/bs.vh.2022.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The term "scavengome" refers to the chemical space of all the metabolites that may be formed from an antioxidant upon scavenging reactive oxygen or nitrogen species (ROS/RNS). This chemical space covers a wide variety of free radical metabolites with drug discovery potential. It is very rich in structures representing an increased chemical complexity as compared to the parent antioxidant: a wide range of unusual heterocyclic structures, new CC bonds, etc. may be formed. Further, in a biological environment, this increased chemical complexity is directly translated from the localized conditions of oxidative stress that determines the amounts and types of ROS/RNS present. Biomimetic oxidative chemistry provides an excellent tool to model chemical reactions between antioxidants and ROS/RNS. In this chapter, we provide an overview on the known metabolites obtained by biomimetic oxidation of a few selected natural antioxidants, i.e., a stilbene (resveratrol), a pair of hydroxycinnamates (caffeic acid and methyl caffeate), and a flavonol (quercetin), and discuss the drug discovery perspectives of the related chemical space.
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Affiliation(s)
- Attila Hunyadi
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Szeged, Hungary; Interdisciplinary Centre for Natural Products, University of Szeged, Szeged, Hungary.
| | - Orinhamhe G Agbadua
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Szeged, Hungary
| | - Gábor Takács
- Department of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, Budapest, Hungary; Mcule.com Ltd., Budapest, Hungary
| | - Gyorgy T Balogh
- Department of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, Budapest, Hungary; Department of Pharmacodynamics and Biopharmacy, University of Szeged, Szeged, Hungary
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11
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Lenci E, Trabocchi A. Diversity‐Oriented Synthesis and Chemoinformatics: A Fruitful Synergy towards Better Chemical Libraries. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Elena Lenci
- Universita degli Studi di Firenze Department of Chemistry Via della Lastruccia 1350019Italia 50019 Sesto Fiorentino ITALY
| | - Andrea Trabocchi
- University of Florence: Universita degli Studi di Firenze Department of Chemistry "Ugo Schiff" ITALY
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12
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Wohlgemuth R. Selective Biocatalytic Defunctionalization of Raw Materials. CHEMSUSCHEM 2022; 15:e202200402. [PMID: 35388636 DOI: 10.1002/cssc.202200402] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/05/2022] [Indexed: 06/14/2023]
Abstract
Biobased raw materials, such as carbohydrates, amino acids, nucleotides, or lipids contain valuable functional groups with oxygen and nitrogen atoms. An abundance of many functional groups of the same type, such as primary or secondary hydroxy groups in carbohydrates, however, limits the synthetic usefulness if similar reactivities cannot be differentiated. Therefore, selective defunctionalization of highly functionalized biobased starting materials to differentially functionalized compounds can provide a sustainable access to chiral synthons, even in case of products with fewer functional groups. Selective defunctionalization reactions, without affecting other functional groups of the same type, are of fundamental interest for biocatalytic reactions. Controlled biocatalytic defunctionalizations of biobased raw materials are attractive for obtaining valuable platform chemicals and building blocks. The biocatalytic removal of functional groups, an important feature of natural metabolic pathways, can also be utilized in a systemic strategy for sustainable metabolite synthesis.
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Affiliation(s)
- Roland Wohlgemuth
- Institute of Molecular and Industrial Biotechnology, Lodz University of Technology Łódź, 90-537, Lodz, Poland
- Swiss Coordination Committee Biotechnology (SKB), 8002, Zurich, Switzerland
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13
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Hernández D, Porras M, Boto A. Structural diversity using amino acid "Customizable Units": conversion of hydroxyproline (Hyp) into nitrogen heterocycles. Amino Acids 2022; 54:955-966. [PMID: 35414005 PMCID: PMC9213323 DOI: 10.1007/s00726-022-03159-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 03/20/2022] [Indexed: 12/01/2022]
Abstract
The ability of amino acid “customizable units” to generate structural diversity is illustrated by the conversion of 4-hydroxyproline (Hyp) units into a variety of nitrogen heterocycles. After a first common step, where the unit underwent a one-pot decarboxylation–alkylation reaction to afford 2-alkylpyrrolidines with high stereoselectivity, a divergent step was carried out. Thus, the deprotected 4-hydroxy group was used either to initiate a radical scission that afforded aliphatic β-amino aldehydes, or to carry out an elimination reaction, to give 2-alkyl-2,5-dihydro-1H-pyrroles. In the first case, the amines underwent a tandem reductive amination–cyclization to afford β-amino-δ-lactams, an efficient rigidifying unit in peptides. Different lactam N-substituents, such as alkylamines, peptides, and alkenyl chains suitable for olefin metathesis were introduced this way. In the second case, the pyrrole derivatives were efficiently converted into alkaloid and iminosugar derivatives in good global yields and with excellent stereoselectivity.
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Affiliation(s)
- Dácil Hernández
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez, 3, 38206, La Laguna, Tenerife, Spain.
| | - Marina Porras
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez, 3, 38206, La Laguna, Tenerife, Spain
| | - Alicia Boto
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez, 3, 38206, La Laguna, Tenerife, Spain.
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14
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Whitmarsh-Everiss T, Olsen AH, Laraia L. Identification of Inhibitors of Cholesterol Transport Proteins Through the Synthesis of a Diverse, Sterol-Inspired Compound Collection. Angew Chem Int Ed Engl 2021; 60:26755-26761. [PMID: 34626154 DOI: 10.1002/anie.202111639] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Indexed: 12/26/2022]
Abstract
Cholesterol transport proteins regulate a vast array of cellular processes including lipid metabolism, vesicular and non-vesicular trafficking, organelle contact sites, and autophagy. Despite their undoubted importance, the identification of selective modulators of this class of proteins has been challenging due to the structural similarities in the cholesterol-binding site. Herein we report a general strategy for the identification of selective inhibitors of cholesterol transport proteins via the synthesis of a diverse sterol-inspired compound collection. Fusion of a primary sterol fragment to an array of secondary privileged scaffolds led to the identification of potent and selective inhibitors of the cholesterol transport protein Aster-C, which displayed a surprising preference for the unnatural-sterol AB-ring stereochemistry and new inhibitors of Aster-A. We propose that this strategy can and should be applied to any therapeutically relevant sterol-binding protein.
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Affiliation(s)
- Thomas Whitmarsh-Everiss
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800, Kongens Lyngby, Denmark
| | - Asger Hegelund Olsen
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800, Kongens Lyngby, Denmark
| | - Luca Laraia
- Department of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800, Kongens Lyngby, Denmark
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15
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Whitmarsh‐Everiss T, Olsen AH, Laraia L. Identification of Inhibitors of Cholesterol Transport Proteins Through the Synthesis of a Diverse, Sterol‐Inspired Compound Collection. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Thomas Whitmarsh‐Everiss
- Department of Chemistry Technical University of Denmark Kemitorvet 207 2800 Kongens Lyngby Denmark
| | - Asger Hegelund Olsen
- Department of Chemistry Technical University of Denmark Kemitorvet 207 2800 Kongens Lyngby Denmark
| | - Luca Laraia
- Department of Chemistry Technical University of Denmark Kemitorvet 207 2800 Kongens Lyngby Denmark
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16
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Kiss L, Benke Z, Nonn M, Remete AM, Fustero S. Diversity-Oriented Synthesis of Highly Functionalized Alicycles across Dipolar Cycloaddition/Metathesis Reaction. Synlett 2021. [DOI: 10.1055/s-0040-1706041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
AbstractThis Account gives an insight into the selective functionalization of some readily available commercial cyclodienes across simple chemical transformations into functionalized small-molecular scaffolds. The syntheses involved selective cycloadditions, followed by ring-opening metathesis (ROM) of the resulting azetidin-2-one derivatives or isoxazoline frameworks and selective cross metathesis (CM) by discrimination of the C=C bonds on the alkenylated heterocycles. The CM protocols have been described when investigated under various conditions with the purpose on exploring chemodifferentiation of the olefin bonds and a study on the access of the corresponding functionalized β-lactam or isoxazoline derivatives is presented. Due to the expanding importance of organofluorine chemistry in drug research as well as of the high biological potential of β-lactam derivatives several illustrative examples to the access of some fluorine-containing molecular entities is also presented in this synopsis.1 Introduction2 Ring C=C Bond Functionalization of Some Cycloalkene β-Amino Acid Derivatives across Chlorosulfonyl Isocyanate Cycloaddition3 Ring C=C Bond Functionalization of Some Cycloalkene β-Amino Acid Derivatives across Nitrile Oxide Cycloaddition4 Ring C=C Bond Functionalization of Some Cycloalkene β-Amino Acid Derivatives across Metathesis5 Functionalization of sSome Cyclodienes across Nitrile Oxide Cycloaddition6 Selective Synthesis of Functionalized Alicycles across Ring-Opening Metathesis7 Selective Synthesis of Functionalized Alicycles through Cross Metathesis8 Summary and Outlook9 List of Abbreviations
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Affiliation(s)
- Loránd Kiss
- Institute of Pharmaceutical Chemistry, University of Szeged
- University of Szeged, Interdisciplinary Excellence Centre, Institute of Pharmaceutical Chemistry
| | - Zsanett Benke
- Institute of Pharmaceutical Chemistry, University of Szeged
- University of Szeged, Interdisciplinary Excellence Centre, Institute of Pharmaceutical Chemistry
| | - Melinda Nonn
- Institute of Pharmaceutical Chemistry, University of Szeged
- University of Szeged, Interdisciplinary Excellence Centre, Institute of Pharmaceutical Chemistry
| | - Attila M. Remete
- Institute of Pharmaceutical Chemistry, University of Szeged
- University of Szeged, Interdisciplinary Excellence Centre, Institute of Pharmaceutical Chemistry
| | - Santos Fustero
- Department of Organic Chemistry, University of Valencia, Pharmacy Faculty
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17
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Eymery M, Tran-Nguyen VK, Boumendjel A. Diversity-Oriented Synthesis: Amino Acetophenones as Building Blocks for the Synthesis of Natural Product Analogs. Pharmaceuticals (Basel) 2021; 14:1127. [PMID: 34832909 PMCID: PMC8619038 DOI: 10.3390/ph14111127] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/30/2021] [Accepted: 11/03/2021] [Indexed: 11/16/2022] Open
Abstract
Diversity-Oriented Synthesis (DOS) represents a strategy to obtain molecule libraries with diverse structural features starting from one common compound in limited steps of synthesis. During the last two decades, DOS has become an unmissable strategy in organic synthesis and is fully integrated in various drug discovery processes. On the other hand, natural products with multiple relevant pharmacological properties have been extensively investigated as scaffolds for ligand-based drug design. In this article, we report the amino dimethoxyacetophenones that can be easily synthesized and scaled up from the commercially available 3,5-dimethoxyaniline as valuable starting blocks for the DOS of natural product analogs. More focus is placed on the synthesis of analogs of flavones, coumarins, azocanes, chalcones, and aurones, which are frequently studied as lead compounds in drug discovery.
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Affiliation(s)
- Mathias Eymery
- Université Grenoble Alpes, INSERM, LRB, 38000 Grenoble, France;
- EMBL Grenoble, 71 Avenue des Martyrs, CS 90181, 38042 Grenoble, France
| | - Viet-Khoa Tran-Nguyen
- Laboratoire d’Innovation Thérapeutique, Université de Strasbourg, 67400 Illkirch, France;
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18
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Abstract
Polyfunctional building blocks are essential for the implementation of diversity-oriented synthetic strategies, highly demanded in small molecule libraries’ design for modern drug discovery. Acyl(imidoyl)ketenes are highly reactive organic compounds, bearing both oxa- and aza-diene moieties, conjugated symmetrically to the ketene fragment, enabling synthesis of various skeletally diverse heterocycles on their basis. The highlights of reactions utilizing acyl(imidoyl)ketenes are high yields, short reaction time (about several minutes), high selectivity, atom economy, and simple purification procedures, which benefits the drug discovery. The present review focuses on the approaches to thermal generation of acyl(imidoyl)ketenes, patterns of their immediate transformations via intra- and intermolecular reactions, including the reactions of cyclodimerization, in which either symmetric or dissymmetric heterocycles can be formed. Recent advances in investigations on mechanisms, identifications of intermediates, and chemo- and regioselectivity of reactions with participation of acyl(imidoyl)ketenes are also covered.
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19
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Deivasigamani G, Adukamparai Rajukrishnan SB. A sequential multicomponent reaction (SMCR) strategy: Synthesis of novel pyrazolo-1,4-dioxaspiro[4,5]decane grafted spiro-indenoquinoxaline pyrrolidine heterocycles. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1919901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Kharchenko SH, Iampolska AD, Radchenko DS, Vashchenko BV, Voitenko ZV, Grygorenko OO. A Diversity‐Oriented Approach to Large Libraries of Artificial Macrocycles. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100195] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Anna D. Iampolska
- Enamine Ltd. Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Dmytro S. Radchenko
- Enamine Ltd. Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Bohdan V. Vashchenko
- Enamine Ltd. Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Zoia V. Voitenko
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Oleksandr O. Grygorenko
- Enamine Ltd. Chervonotkatska Street 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
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21
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Cuevas F, Saavedra CJ, Romero‐Estudillo I, Boto A, Ordóñez M, Vergara I. Structural Diversity using Hyp
“Customizable Units”
:
Proof‐of‐Concept
Synthesis of Sansalvamide‐Related Antitumoral Peptides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001427] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Fernando Cuevas
- Centro de Investigaciones Químicas-IICBA Universidad Autónoma del Estado de Morelos Av. Universidad 1001 Cuernavaca Morelos 62209 México
| | - Carlos J. Saavedra
- Instituto de Productos Naturales y Agrobiología del CSIC Avda. Astrofísico Francisco Sánchez 3 38206- La Laguna Tenerife Spain
- BIOSIGMA SL c/Antonio Dominguez Afonso 16 38003- S/C Tenerife Spain
| | - Ivan Romero‐Estudillo
- Centro de Investigaciones Químicas-IICBA Universidad Autónoma del Estado de Morelos Av. Universidad 1001 Cuernavaca Morelos 62209 México
- Catedrático CONACYT-CIQ-UAEM México
| | - Alicia Boto
- Instituto de Productos Naturales y Agrobiología del CSIC Avda. Astrofísico Francisco Sánchez 3 38206- La Laguna Tenerife Spain
| | - Mario Ordóñez
- Centro de Investigaciones Químicas-IICBA Universidad Autónoma del Estado de Morelos Av. Universidad 1001 Cuernavaca Morelos 62209 México
| | - Irene Vergara
- Departamento de Ciencias Químico-Biológicas Universidad de las Américas Puebla, ExHda Sta. Catarina Mártir s/n San Andrés Cholula Puebla 72820 México
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22
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Malandraki-Miller S, Riley PR. Use of artificial intelligence to enhance phenotypic drug discovery. Drug Discov Today 2021; 26:887-901. [PMID: 33484947 DOI: 10.1016/j.drudis.2021.01.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/28/2020] [Accepted: 01/15/2021] [Indexed: 01/17/2023]
Abstract
Research and development (R&D) productivity across the pharmaceutical industry has received close scrutiny over the past two decades, especially taking into consideration reports of attrition rates and the colossal cost for drug development. The respective merits of the two main drug discovery approaches, phenotypic and target based, have divided opinion across the research community, because each hold different advantages for identifying novel molecular entities with a successful path to the market. Nevertheless, both have low translatability in the clinic. Artificial intelligence (AI) and adoption of machine learning (ML) tools offer the promise of revolutionising drug development, and overcoming obstacles in the drug discovery pipeline. Here, we assess the potential of target-driven and phenotypic-based approaches and offer a holistic description of the current state of the field, from both a scientific and industry perspective. With the emerging partnerships between AI/ML and pharma still in their relative infancy, we investigate the potential and current limitations with a particular focus on phenotypic drug discovery. Finally, we emphasise the value of public-private partnerships (PPPs) and cross-disciplinary collaborations to foster innovation and facilitate efficient drug discovery programmes.
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Affiliation(s)
| | - Paul R Riley
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK.
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23
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Boyce JH, Reisman BJ, Bachmann BO, Porco JA. Synthesis and Multiplexed Activity Profiling of Synthetic Acylphloroglucinol Scaffolds. Angew Chem Int Ed Engl 2021; 60:1263-1272. [PMID: 32965753 PMCID: PMC7855714 DOI: 10.1002/anie.202010338] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Indexed: 12/20/2022]
Abstract
Reported here are novel formic-acid-mediated rearrangements of dearomatized acylphloroglucinols to access a structurally diverse group of synthetic acylphloroglucinol scaffolds (SASs). Density-functional theory (DFT) optimized orbital and stereochemical analyses shed light on the mechanism of these rearrangements. Products were evaluated by multiplexed activity profiling (MAP), an unbiased platform which assays multiple biological readouts simultaneously at single-cell resolution for markers of cell signaling, and can aid in distinguishing genuine activity from assay interference. MAP identified a number of SASs that suppressed pS6 (Ser235/236), a marker for activation of the mTOR and ERK signaling pathways. These results illustrate how biomimetic synthesis and multiplexed activity profiling can reveal the pharmacological potential of novel chemotypes by diversity-oriented synthesis.
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Affiliation(s)
- Jonathan H Boyce
- Department of Chemistry and Center for Molecular Discovery (BU-CMD), Boston University, 590 Commonwealth Avenue, Boston, MA, 02215, USA
- Current Address: Department of Pharmaceutical Chemistry, University of California, San Francisco, 555 Mission Bay Blvd S., San Francisco, CA, 94158, USA
| | - Benjamin J Reisman
- Vanderbilt University, Chemistry Department, 7330 Stevenson Center, Nashville, TN, 37235, USA
| | - Brian O Bachmann
- Vanderbilt University, Chemistry Department, 7330 Stevenson Center, Nashville, TN, 37235, USA
| | - John A Porco
- Department of Chemistry and Center for Molecular Discovery (BU-CMD), Boston University, 590 Commonwealth Avenue, Boston, MA, 02215, USA
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24
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Boyce JH, Reisman BJ, Bachmann BO, Porco JA. Synthesis and Multiplexed Activity Profiling of Synthetic Acylphloroglucinol Scaffolds. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010338] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jonathan H. Boyce
- Department of Chemistry and Center for Molecular Discovery (BU-CMD) Boston University 590 Commonwealth Avenue Boston MA 02215 USA
- Current Address: Department of Pharmaceutical Chemistry University of California, San Francisco 555 Mission Bay Blvd S. San Francisco CA 94158 USA
| | - Benjamin J. Reisman
- Vanderbilt University Chemistry Department 7330 Stevenson Center Nashville TN 37235 USA
| | - Brian O. Bachmann
- Vanderbilt University Chemistry Department 7330 Stevenson Center Nashville TN 37235 USA
| | - John A. Porco
- Department of Chemistry and Center for Molecular Discovery (BU-CMD) Boston University 590 Commonwealth Avenue Boston MA 02215 USA
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25
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Fási L, Latif AD, Zupkó I, Lévai S, Dékány M, Béni Z, Könczöl Á, Balogh GT, Hunyadi A. AAPH or Peroxynitrite-Induced Biorelevant Oxidation of Methyl Caffeate Yields a Potent Antitumor Metabolite. Biomolecules 2020; 10:biom10111537. [PMID: 33187226 PMCID: PMC7697082 DOI: 10.3390/biom10111537] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 11/08/2020] [Indexed: 12/13/2022] Open
Abstract
Hydroxycinnamic acids represent a versatile group of dietary plant antioxidants. Oxidation of methyl-p-coumarate (pcm) and methyl caffeate (cm) was previously found to yield potent antitumor metabolites. Here, we report the formation of potentially bioactive products of pcm and cm oxidized with peroxynitrite (ONOO¯), a biologically relevant reactive nitrogen species (RNS), or with α,α'-azodiisobutyramidine dihydrochloride (AAPH) as a chemical model for reactive oxygen species (ROS). A continuous flow system was developed to achieve reproducible in situ ONOO¯ formation. Reaction mixtures were tested for their cytotoxic effect on HeLa, SiHa, MCF-7 and MDA-MB-231 cells. The reaction of pcm with ONOO¯ produced two fragments, an o-nitrophenol derivative, and a new chlorinated compound. Bioactivity-guided isolation from the reaction mixture of cm with AAPH produced two dimerization products, including a dihydrobenzofuran lignan that exerted strong antitumor activity in vitro, and has potent in vivo antimetastatic activity which was previously reported. This compound was also detected from the reaction between cm and ONOO¯. Our results demonstrate the ROS/RNS dependent formation of chemically stable metabolites, including a potent antitumor agent (5), from hydroxycinnamic acids. This suggests that diversity-oriented synthesis using ROS/RNS to obtain oxidized antioxidant metabolite mixtures may serve as a valid natural product-based drug discovery strategy.
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Affiliation(s)
- Laura Fási
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary; (L.F.); (A.D.L.)
| | - Ahmed Dhahir Latif
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary; (L.F.); (A.D.L.)
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary;
| | - István Zupkó
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary;
| | - Sándor Lévai
- Department of Chemistry, Gedeon Richter Plc., Gyömrői u. 19-21, H-1103 Budapest, Hungary; (S.L.); (M.D.); (Z.B.); (A.K.)
| | - Miklós Dékány
- Department of Chemistry, Gedeon Richter Plc., Gyömrői u. 19-21, H-1103 Budapest, Hungary; (S.L.); (M.D.); (Z.B.); (A.K.)
| | - Zoltán Béni
- Department of Chemistry, Gedeon Richter Plc., Gyömrői u. 19-21, H-1103 Budapest, Hungary; (S.L.); (M.D.); (Z.B.); (A.K.)
| | - Árpád Könczöl
- Department of Chemistry, Gedeon Richter Plc., Gyömrői u. 19-21, H-1103 Budapest, Hungary; (S.L.); (M.D.); (Z.B.); (A.K.)
| | - György Tibor Balogh
- Department of Chemistry, Gedeon Richter Plc., Gyömrői u. 19-21, H-1103 Budapest, Hungary; (S.L.); (M.D.); (Z.B.); (A.K.)
- Correspondence: (G.T.B.); (A.H.); Tel.: +36-1-4632174 (G.T.B.); +36-62-546-456 (A.H.)
| | - Attila Hunyadi
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary; (L.F.); (A.D.L.)
- Interdisciplinary Centre for Natural Products, University of Szeged, Eötvös str. 6, H-6720 Szeged, Hungary
- Correspondence: (G.T.B.); (A.H.); Tel.: +36-1-4632174 (G.T.B.); +36-62-546-456 (A.H.)
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26
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Gernet A, Sevrain N, Volle JN, Ayad T, Pirat JL, Virieux D. Diversity-Oriented Synthesis toward Aryl- and Phosphoryl-Functionalized Imidazo[1,2- a]pyridines. J Org Chem 2020; 85:14730-14743. [PMID: 33166470 DOI: 10.1021/acs.joc.0c02059] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We report herein an efficient synthesis of diversely polysubstituted imidazo[1,2-a]pyridines, a family of aza-heterocycles endowed with numerous biological properties, through a sequence involving two consecutive palladium-catalyzed cross-coupling reactions. First, we demonstrated that a Hirao coupling occurred straightforwardly in high yields at positions 3, 5, and 6 of imidazopyridine derivatives, giving access to a wide variety of substituted phosphonates, phosphinates, and phosphine oxides. In a second step, direct CH-arylation of phosphorylimidazopyridines with aryl halides was found to be effective and fully selective, leading to 3-aryl-substituted imidazopyridines in moderate to high yields depending on steric hindrance.
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Affiliation(s)
- Aurélie Gernet
- ICGM, Univ. Montpellier, CNRS, ENSCM, 34296 Montpellier, France
| | - Nicolas Sevrain
- ICGM, Univ. Montpellier, CNRS, ENSCM, 34296 Montpellier, France
| | - Jean-Noël Volle
- ICGM, Univ. Montpellier, CNRS, ENSCM, 34296 Montpellier, France
| | - Tahar Ayad
- PSL University, Chimie ParisTech, CNRS, Institute of Chemistry for Life and Health Sciences, CSB2D Team, 11 rue Pierre et Marie Curie, 75005 Paris, France
| | - Jean-Luc Pirat
- ICGM, Univ. Montpellier, CNRS, ENSCM, 34296 Montpellier, France
| | - David Virieux
- ICGM, Univ. Montpellier, CNRS, ENSCM, 34296 Montpellier, France
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27
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Abstract
Covering: 1986 to 2020Natural products are an enduring source of chemical information useful for probing biologically relevant chemical space. Toward gathering further structure-activity relationship (SAR) information for a particular natural product, synthetic chemists traditionally proceeded first by a total synthesis effort followed by the synthesis of simplified derivatives. While this approach has proven fruitful, it often does not incorporate hypotheses regarding structural features necessary for bioactivity at the synthetic planning stage, but rather focuses on the rapid assembly of the targeted natural product; a goal that often supersedes the opportunity to gather SAR information en route to the natural product. Furthermore, access to simplified variants of a natural product possessing only the proposed essential structural features necessary for bioactivity, typically at lower oxidation states overall, is sometimes non-trivial from the original established synthetic route. In recent years, several synthetic design strategies were described to streamline the process of finding bioactive molecules in concert with fathering further SAR studies for targeted natural products. This review article will briefly discuss traditional retrosynthetic strategies and contrast them to selected examples of recent synthetic strategies for the investigation of biologically relevant chemical space revealed by natural products. These strategies include: diversity-oriented synthesis (DOS), biology-oriented synthesis (BIOS), diverted-total synthesis (DTS), analogue-oriented synthesis (AOS), two-phase synthesis, function-oriented synthesis (FOS), and computed affinity/dynamically ordered retrosynthesis (CANDOR). Finally, a description of pharmacophore-directed retrosynthesis (PDR) developed in our laboratory and initial applications will be presented that was initially inspired by a retrospective analysis of our synthetic route to pateamine A completed in 1998.
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Affiliation(s)
- Nathanyal J Truax
- Department of Chemistry & Biochemistry, Baylor University, Waco, Texas 76710, USA.
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28
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François B, Eberlin L, Berrée F, Whiting A, Carboni B. Generating Skeletal Diversity and Complexity from Boron-Substituted 1,3-Dienes and Enophiles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000330] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Benjamin François
- Univ Rennes; CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226; 35000 Rennes France
| | - Ludovic Eberlin
- Univ Rennes; CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226; 35000 Rennes France
| | - Fabienne Berrée
- Univ Rennes; CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226; 35000 Rennes France
| | - Andrew Whiting
- Department of Chemistry; Durham University; Science Laboratories; South Road DH1 3LE Durham U.K
| | - Bertrand Carboni
- Univ Rennes; CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226; 35000 Rennes France
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29
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Smedley CJ, Li G, Barrow AS, Gialelis TL, Giel MC, Ottonello A, Cheng Y, Kitamura S, Wolan DW, Sharpless KB, Moses JE. Diversity Oriented Clicking (DOC): Divergent Synthesis of SuFExable Pharmacophores from 2-Substituted-Alkynyl-1-Sulfonyl Fluoride (SASF) Hubs. Angew Chem Int Ed Engl 2020; 59:12460-12469. [PMID: 32301265 PMCID: PMC7572632 DOI: 10.1002/anie.202003219] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Indexed: 01/08/2023]
Abstract
Diversity Oriented Clicking (DOC) is a unified click-approach for the modular synthesis of lead-like structures through application of the wide family of click transformations. DOC evolved from the concept of achieving "diversity with ease", by combining classic C-C π-bond click chemistry with recent developments in connective SuFEx-technologies. We showcase 2-Substituted-Alkynyl-1-Sulfonyl Fluorides (SASFs) as a new class of connective hub in concert with a diverse selection of click-cycloaddition processes. Through the selective DOC of SASFs with a range of dipoles and cyclic dienes, we report a diverse click-library of 173 unique functional molecules in minimal synthetic steps. The SuFExable library comprises 10 discrete heterocyclic core structures derived from 1,3- and 1,5-dipoles; while reaction with cyclic dienes yields several three-dimensional bicyclic Diels-Alder adducts. Growing the library to 278 discrete compounds through late-stage modification was made possible through SuFEx click derivatization of the pendant sulfonyl fluoride group in 96 well-plates-demonstrating the versatility of the DOC approach for the rapid synthesis of diverse functional structures. Screening for function against MRSA (USA300) revealed several lead hits with improved activity over methicillin.
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Affiliation(s)
- Christopher J Smedley
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Gencheng Li
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Andrew S Barrow
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Timothy L Gialelis
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Marie-Claire Giel
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Alessandra Ottonello
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Yunfei Cheng
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Seiya Kitamura
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Dennis W Wolan
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - K Barry Sharpless
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - John E Moses
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia.,Cancer Center, Cold Spring Harbor Laboratory, 1 Bungtown Rd, Cold Spring Harbor, NY, 11724, USA
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30
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Diversity Oriented Clicking (DOC): Divergent Synthesis of SuFExable Pharmacophores from 2‐Substituted‐Alkynyl‐1‐Sulfonyl Fluoride (SASF) Hubs. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003219] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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31
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Wang D, Shi H. An Unexpected Reaction of Isodehydracetic Acid with Amines in the Presence of 1-Ethyl-3-(3-dimethylaminopropyl) Carbodiimide Hydrochloride Yields a New Type of β-Enaminones. Molecules 2020; 25:molecules25092131. [PMID: 32370124 PMCID: PMC7249165 DOI: 10.3390/molecules25092131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 04/21/2020] [Accepted: 05/01/2020] [Indexed: 12/03/2022] Open
Abstract
The reaction of isodehydracetic acid with amines was serendipitously found to afford β-enaminones in the presence of the coupling agent 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC). Under the optimal reaction condition, 23 examples of α-aminomethylene glutaconic anhydride were obtained at approximately 30−80% yields. This is a concise, operationally simple method to expediently synthesize a new type of β-enaminone-containing compound.
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Affiliation(s)
- Delong Wang
- Department of Pharmaceutical Engineering, Shanxi Agricultural University, Taigu 030801, China
- Correspondence: ; Tel.: +86-354-6286398
| | - Hui Shi
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
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32
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Laroche B, Bouvarel T, Louis-Sylvestre M, Nay B. Diversity-oriented synthesis of 17-spirosteroids. Beilstein J Org Chem 2020; 16:880-887. [PMID: 32461769 PMCID: PMC7214869 DOI: 10.3762/bjoc.16.79] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 04/17/2020] [Indexed: 01/04/2023] Open
Abstract
A diversity-oriented synthesis (DOS) approach has been used to functionalize 17-ethynyl-17-hydroxysteroids through a one-pot procedure involving a ring-closing enyne metathesis (RCEYM) and a Diels–Alder reaction on the resulting diene, under microwave irradiations. Taking advantage of the propargyl alcohol moiety present on commercially available steroids, this classical strategy was applied to mestranol and lynestrenol, giving a collection of new complex 17-spirosteroids.
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Affiliation(s)
- Benjamin Laroche
- Unité Molécules de Communication et Adaptations des Micro-organismes (MCAM), Muséum National d'Histoire Naturelle, CNRS, Paris, France
| | - Thomas Bouvarel
- Unité Molécules de Communication et Adaptations des Micro-organismes (MCAM), Muséum National d'Histoire Naturelle, CNRS, Paris, France
| | - Martin Louis-Sylvestre
- Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, Palaiseau Cedex, France
| | - Bastien Nay
- Unité Molécules de Communication et Adaptations des Micro-organismes (MCAM), Muséum National d'Histoire Naturelle, CNRS, Paris, France.,Laboratoire de Synthèse Organique, Ecole Polytechnique, CNRS, ENSTA, Institut Polytechnique de Paris, Palaiseau Cedex, France
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33
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Lowe RA, Taylor D, Chibale K, Nelson A, Marsden SP. Synthesis and evaluation of the performance of a small molecule library based on diverse tropane-related scaffolds. Bioorg Med Chem 2020; 28:115442. [PMID: 32209295 DOI: 10.1016/j.bmc.2020.115442] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/02/2020] [Accepted: 03/12/2020] [Indexed: 12/20/2022]
Abstract
A unified synthetic approach was developed that enabled the synthesis of diverse tropane-related scaffolds. The key intermediates that were exploited were cycloadducts formed by reaction between 3-hydroxy-pyridinium salts and vinyl sulfones or sulfonamides. The diverse tropane-related scaffolds were formed by addition of substituents to, cyclisation reactions of, and fusion of additional ring(s) to the key bicyclic intermediates. A set of 53 screening compounds was designed, synthesised and evaluated in order to determine the biological relevance of the scaffolds accessible using the synthetic approach. Two inhibitors of Hedgehog signalling, and four compounds with weak activity against the parasite P. falciparum, were discovered. Three of the active compounds may be considered to be indotropane or pyrrotropane pseudo natural products in which a tropane is fused with a fragment from another natural product class. It was concluded that the unified synthetic approach had yielded diverse scaffolds suitable for the design of performance-diverse screening libraries.
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Affiliation(s)
- Robert A Lowe
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK; School of Chemistry, University of Leeds, Leeds LS2 9JT, UK
| | - Dale Taylor
- H3D Drug Discovery and Development Center, University of Cape Town, Private Bag, Rondebosch 7700, South Africa
| | - Kelly Chibale
- Department of Chemistry, University of Cape Town, Rondebosch 7701, South Africa; Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Rondebosch 7701, South Africa; South African Medical Research Council, Drug Discovery and Development Research Unit, University of Cape Town, Rondebosch 7701, South Africa
| | - Adam Nelson
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK; School of Chemistry, University of Leeds, Leeds LS2 9JT, UK.
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34
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Innocenti R, Lenci E, Menchi G, Trabocchi A. Combination of multicomponent KA 2 and Pauson-Khand reactions: short synthesis of spirocyclic pyrrolocyclopentenones. Beilstein J Org Chem 2020; 16:200-211. [PMID: 32117477 PMCID: PMC7034245 DOI: 10.3762/bjoc.16.23] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 01/23/2020] [Indexed: 12/23/2022] Open
Abstract
The Cu-catalyzed multicomponent ketone–amine–alkyne (KA2) reaction was combined with a Pauson–Khand cycloaddition to give access of unprecedented constrained spirocyclic pyrrolocyclopentenone derivatives following a DOS couple-pair approach. The polyfunctional molecular scaffolds were tested on the cyclopentenone reactivity to further expand the skeletal diversity, demonstrating the utility of this combined approach in generating novel spiro compounds as starting material for the generation of chemical libraries. The chemoinformatics characterization of the newly-synthesized molecules gave evidence about structural and physicochemical properties with respect to a set of blockbuster drugs, and showed that such scaffolds are drug-like but more spherical and three-dimensional in character than the drugs.
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Affiliation(s)
- Riccardo Innocenti
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019 Sesto Fiorentino, Florence, Italy
| | - Elena Lenci
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019 Sesto Fiorentino, Florence, Italy
| | - Gloria Menchi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019 Sesto Fiorentino, Florence, Italy
| | - Andrea Trabocchi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019 Sesto Fiorentino, Florence, Italy.,Interdepartmental Center for Preclinical Development of Molecular Imaging (CISPIM), University of Florence, Viale Morgagni 85, 50134 Florence, Italy
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35
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Gao Q, Shang Y, Song F, Ye J, Liu ZS, Li L, Cheng HG, Zhou Q. Modular Dual-Tasked C-H Methylation via the Catellani Strategy. J Am Chem Soc 2019; 141:15986-15993. [PMID: 31512477 DOI: 10.1021/jacs.9b07857] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We report a dual-tasked methylation that is based on cooperative palladium/norbornene catalysis. Readily available (hetero)aryl halides (39 iodides and 4 bromides) and inexpensive MeOTs or trimethylphosphate are utilized as the substrates and methylating reagent, respectively. Six types of "ipso" terminations can modularly couple with this "ortho" C-H methylation to constitute a versatile methylation toolbox for preparing diversified methylated arenes. This toolbox features inexpensive methyl sources, excellent functional-group tolerance, simple reaction procedures, and scalability. Importantly, it can be uneventfully extended to isotope-labeled methylation by switching to the corresponding reagents CD3OTs or 13CH3OTs. Moreover, this toolbox can be applied to late-stage modification of biorelevant substrates with complete stereoretention. We believe these salient and practical features of our dual-tasked methylation toolbox will be welcomed by academic and industrial researchers.
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36
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Dantas RF, Evangelista TCS, Neves BJ, Senger MR, Andrade CH, Ferreira SB, Silva-Junior FP. Dealing with frequent hitters in drug discovery: a multidisciplinary view on the issue of filtering compounds on biological screenings. Expert Opin Drug Discov 2019; 14:1269-1282. [DOI: 10.1080/17460441.2019.1654453] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Rafael Ferreira Dantas
- LaBECFar – Laboratório de Bioquímica Experimental e Computacional de Fármacos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Tereza Cristina Santos Evangelista
- LaSOPB – Laboratório de Síntese Orgânica e Prospecção Biológica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Bruno Junior Neves
- LabChem – Laboratory of Cheminformatics, Centro Universitário de Anápolis, UniEVANGÉLICA, Anápolis, Brazil
| | - Mario Roberto Senger
- LaBECFar – Laboratório de Bioquímica Experimental e Computacional de Fármacos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Carolina Horta Andrade
- LabMol – Laboratory for Molecular Modeling and Drug Design, Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, Brazil
| | - Sabrina Baptista Ferreira
- LaSOPB – Laboratório de Síntese Orgânica e Prospecção Biológica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Floriano Paes Silva-Junior
- LaBECFar – Laboratório de Bioquímica Experimental e Computacional de Fármacos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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37
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Gerlach EM, Korkmaz MA, Pavlinov I, Gao Q, Aldrich LN. Systematic Diversity-Oriented Synthesis of Reduced Flavones from γ-Pyrones to Probe Biological Performance Diversity. ACS Chem Biol 2019; 14:1536-1545. [PMID: 31184855 DOI: 10.1021/acschembio.9b00294] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Diversity-oriented synthesis (DOS) has historically focused on the development of small-molecule collections with considerable chemical diversity with the hypothesis that chemical diversity will lead to diverse biological activities. We took a systematic approach to DOS to develop a focused library of reduced flavones from γ-pyrones with diversity of appendage, stereochemistry, and chemical properties to determine which features of small molecules are most predictive of biological performance diversity. The effects of these systematic modifications on biodiversity were determined using Cell Painting and cytotoxicity assays to compare the results of multiple methods of assessment. We observed that a greater fraction of sp3 hybridized atoms (fsp3) does not always lead to enhanced biodiversity, that stereochemistry and appendage diversity both contribute to biodiversity, and that lipophilicity of the pyrone class of compounds correlates with biodiversity. These results will contribute to the development of a general algorithm to predict which chemical features should be considered during the synthesis of DOS libraries to create biological performance-diverse collections of small molecules for probe and drug discovery.
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Affiliation(s)
- Erica M. Gerlach
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Melissa A. Korkmaz
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Ivan Pavlinov
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Qiwen Gao
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Leslie N. Aldrich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
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38
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Harit VK, Ramesh NG. Ring closing metathesis (RCM) approach to the synthesis of conduramine B-2, ent-conduramine F-2, aminocyclopentitol and trihydroxyazepane. Org Biomol Chem 2019; 17:5951-5961. [PMID: 31166343 DOI: 10.1039/c9ob01010f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The syntheses of conduramine B-2, ent-conduramine F-2, aminocyclopentitol and trihydroxyazepane were accomplished from a common precursor, through a divergent approach using ring closing metathesis (RCM) as the key step. Tri-O-benzyl-d-glucal was converted to 3,4,6-tri-O-benzyl-1,2-dideoxy-2-iodo-1-p-toluenesulfonamido-α-d-mannose. Exposure to NaBH4 in MeOH resulted in a facile 1,2-transposition of the -NHTs group with concomitant glycosylation to give methyl 3,4,6-tri-O-benzyl-2-deoxy-2-p-toluenesulfonamido-β-d-glucoside, which was converted into methyl 6-deoxy-6-iodo-glucoside in three steps. Zinc-mediated Vasella's rearrangement proceeded smoothly to give the pluripotent formyl-olefin, possessing both electrophilic and nucleophilic sites, which was used as a common precursor in our diversity-oriented approach. Vinylation of the carbonyl group followed by RCM and subsequent deprotection resulted in the successful synthesis of conduramine B-2 and ent-conduramine F-2 for the first time. On the other hand, the Wittig reaction of the formyl-olefin affords the diene that undergoes Grubbs' I catalyzed RCM and deprotection/reduction to provide 3-amino-cyclopentan-1,2-diol. Utilizing the nucleophilic site at the nitrogen of the common precursor, base mediated N-allylation was carried out to obtain the corresponding diene that underwent a smooth RCM to afford trihydroxyazepane.
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Affiliation(s)
- Vimal Kant Harit
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi - 110016, India.
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39
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El Bouakher A, Martel A, Comesse S. α-Halogenoacetamides: versatile and efficient tools for the synthesis of complex aza-heterocycles. Org Biomol Chem 2019; 17:8467-8485. [DOI: 10.1039/c9ob01683j] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This review presents the use of α-alkyl- and α-alkoxy-halogenoacetamides as powerful partners for domino and 1,3-dipolar cycloaddition reactions resulting in a ring closure.
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Affiliation(s)
| | - Arnaud Martel
- IMMM
- UMR 6283 CNRS
- Le Mans Université
- 72085 Le Mans
- France
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40
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He Y, Wu D, Li Z, Robeyns K, Van Meervelt L, Van der Eycken EV. Facile construction of diverse polyheterocyclic scaffolds via gold-catalysed dearomative spirocyclization/1,6-addition cascade. Org Biomol Chem 2019; 17:6284-6292. [DOI: 10.1039/c9ob01299k] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A post-Ugi gold-catalysed chemo- and diastereo-selective cascade dearomative spirocyclization/1,6-addition sequence is disclosed for the facile synthesis of diverse fused polyheterocyclic scaffolds bearing indole, pyrrole, benzothiophene, furan or electron-rich arene cores.
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Affiliation(s)
- Yi He
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- KU Leuven
- Leuven
- Belgium
| | - Danjun Wu
- College of Pharmaceutical Science
- Zhejiang University of Technology
- 310014 Hangzhou
- China
| | - Zhenghua Li
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- KU Leuven
- Leuven
- Belgium
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences (IMCN)
- Université Catholique de Louvain
- B-1348 Louvain-la-Neuve
- Belgium
| | - Luc Van Meervelt
- Biomolecular Architecture
- Department of Chemistry
- KU Leuven
- Leuven
- Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC)
- Department of Chemistry
- KU Leuven
- Leuven
- Belgium
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