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Gapanenok D, Makhmet A, Peshkov AA, Smirnova D, Amire N, Peshkov VA, Spiridonova D, Dar'in D, Balalaie S, Krasavin M. Multicomponent Assembly of Trisubstituted Imidazoles and Their Photochemical Cyclization into Fused Polyheterocyclic Scaffolds. J Org Chem 2022; 87:7838-7851. [PMID: 35675099 DOI: 10.1021/acs.joc.2c00475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A straightforward route to a large and diverse library of trisubstituted imidazoles was established via a three-component reaction of 2-oxoaldehydes, 1,3-dicarbonyl compounds, and acyclic nitrogen bis-nucleophiles. The obtained products were subsequently explored in a photochemical cyclization yielding a variety of imidazole-fused polycyclic compounds.
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Zhukov AS, Khairutdinov VR, Samtsov AV, Krasavin M, Garabadzhiu AV. Preclinical efficacy investigation of human neutrophil elastase inhibitor sivelestat in animal model of psoriasis. SKIN HEALTH AND DISEASE 2022; 2:e90. [PMID: 35677925 PMCID: PMC9168022 DOI: 10.1002/ski2.90] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/13/2021] [Accepted: 12/16/2021] [Indexed: 11/26/2022]
Abstract
Background Psoriasis is a chronic immune‐mediated inflammatory skin disease manifested by an increased rate of keratinocyte division. Currently, it has been established that the cytokines of the IL‐36 family play a significant role in the initiation and regulation of the inflammatory process in psoriasis. The IL‐36 cytokine found in skin is inactive and its activation requires proteolytic processing that may occur via the involvement of neutrophil serine proteases such as human neutrophil elastase (HNE). The localization of these enzymes in the upper layers of the epidermis suggests that topical application of HNE inhibitors could be efficacious in the treatment of psoriasis. Sivelestat is an HNE inhibitor developed for systemic use towards the treatment of acute respiratory failure. Aim The present study focussed on the investigation of the effects of sivelestat formulated for topical use, in the imiquimod‐induced model of psoriasis in mice. Methods The psoriasis‐like state was induced by application of imiquimod (Aldara®) 5% cream to mouse shaven skin. A group of 40 inbred mice of the BALB/c strain randomized into 4 groups of 10 was used in the experiment: Group 1 – no therapy (control), Group 2 – ointment (Vaseline) containing 1% sivelestat, Group 3 – cream (lanoline + olive oil + water in equal proportions) containing 1% sivelestat, Group 4 – 1% betamethasone dipropionate. Dermatological assessment of skin lesions was performed by means of the PASI method (mPASI), as well as histological and immunohistochemical evaluation. Results Based on the evaluation of efficacy manifestations, it was established that the total mPASI index value decreased by 50% during therapy with sivelestat cream and by 36% during therapy with sivelestat ointment. Histological study revealed that the epidermal thickness in groups that underwent therapy was 2.4–3.6 times lower compared to the control group. Immunohistochemical study of the skin indicated that following sivelestat treatment, the quantity of CD3+cells in the skin was 1.8–2.2 times lower, and the level of proliferative activity (Ki‐67+cells) was 2.3–2.9 lower compared to the non‐therapy group. In contrast to topical corticosteroids where the more pronounced anti‐inflammatory effect is typically seen with ointment formulations, with sivelestat we observed an opposite effect. The reasons for that reversal remain unclear. Conclusion Based on the results obtained using the animal model of imiquimod‐induced psoriasis, it was established that the HNE inhibitor sivelestat demonstrated efficacy comparable to that of a strong topical glucocorticoid steroidal drug (betamethasone dipropionate 1%). Significant resolution of skin lesions, reduction of epidermal thickness, diminishing of the skin infiltration with T‐lymphocytes and normalization of the cell division rate in epidermis and dermis were evident. Thus, suppression of IL‐36 mediated inflammation activity in the skin by topical application of a HNE inhibitor represents a promising new direction in the treatment of psoriasis. Certainly, HNE has other targets; thus, molecular studies could be subject of future experiments beyond the scope of the present study.
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Jovanović M, Podolski-Renić A, Krasavin M, Pešić M. The Role of the Thioredoxin Detoxification System in Cancer Progression and Resistance. Front Mol Biosci 2022; 9:883297. [PMID: 35664671 PMCID: PMC9161637 DOI: 10.3389/fmolb.2022.883297] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 04/22/2022] [Indexed: 12/20/2022] Open
Abstract
The intracellular redox homeostasis is a dynamic balancing system between the levels of free radical species and antioxidant enzymes and small molecules at the core of cellular defense mechanisms. The thioredoxin (Trx) system is an important detoxification system regulating the redox milieu. This system is one of the key regulators of cells’ proliferative potential as well, through the reduction of key proteins. Increased oxidative stress characterizes highly proliferative, metabolically hyperactive cancer cells, which are forced to mobilize antioxidant enzymes to balance the increase in free radical concentration and prevent irreversible damage and cell death. Components of the Trx system are involved in high-rate proliferation and activation of pro-survival mechanisms in cancer cells, particularly those facing increased oxidative stress. This review addresses the importance of the targetable redox-regulating Trx system in tumor progression, as well as in detoxification and protection of cancer cells from oxidative stress and drug-induced cytotoxicity. It also discusses the cancer cells’ counteracting mechanisms to the Trx system inhibition and presents several inhibitors of the Trx system as prospective candidates for cytostatics’ adjuvants. This manuscript further emphasizes the importance of developing novel multitarget therapies encompassing the Trx system inhibition to overcome cancer treatment limitations.
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Vepreva A, Bunev AS, Kudinov AY, Kantin G, Krasavin M, Dar’in D. Unusual highly diastereoselective Rh(II)-catalyzed dimerization of 3-diazo-2-arylidenesuccinimides provides access to a new dibenzazulene scaffold. Beilstein J Org Chem 2022; 18:533-538. [PMID: 35615536 PMCID: PMC9112184 DOI: 10.3762/bjoc.18.55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 05/06/2022] [Indexed: 11/23/2022] Open
Abstract
Formation of unusual unsymmetrical dimers or/and indenes via Rh2(esp)2-catalyzed decomposition of 3-diazo-2-arylidenesuccinimides has been investigated. The reaction proceeded under mild conditions, and its result was shown to strongly depend on the nature of the substituents in the diazo substrate. The new reaction provides access to dibenzoazulenodipyrrole and indenopyrrole derivatives in moderate to high yield. Dibenzoazulenodipyrroles bearing alkyl substituents at the nitrogen atom showed pronounced cytotoxocity against the A549 human lung adenocarcinoma cell line while N-aryl analogs were non-cytotoxic.
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Chupakhin E, Kantin G, Dar'in D, Krasavin M. Novel chromeno[2,3-c]pyrroles synthesized via intramolecular rhodium(ii) carbene trapping. MENDELEEV COMMUNICATIONS 2022. [DOI: 10.1016/j.mencom.2022.05.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ananeva A, Bakulina O, Dar’in D, Kantin G, Krasavin M. Dicarboxylic Acid Monoesters in β- and δ-Lactam Synthesis. Molecules 2022; 27:molecules27082469. [PMID: 35458663 PMCID: PMC9032910 DOI: 10.3390/molecules27082469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/03/2022] [Accepted: 04/08/2022] [Indexed: 02/01/2023] Open
Abstract
A N-(2-methoxy-2-oxoethyl)-N-(phenylsulfonyl)glycine monomethyl ester of the respective dicarboxylic acid was involved in a reaction with imines promoted by acetic anhydride at an elevated temperature. Instead of the initially expected δ-lactam products of the Castagnoli–Cushman-type reaction, medicinally important 3-amino-2-azetidinones were obtained as the result of cyclization, involving a methylene group adjacent to an acid moiety. In contrast, replacing alcohol residue with hexafluoroisopropyl in the same substrate made another methylene group (adjacent to the ester moiety) more reactive to furnishing the desired δ-lactam in the Castagnoli–Cushman fashion.
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Kalinin S, Kovalenko A, Valtari A, Nocentini A, Gureev M, Urtti A, Korsakov M, Supuran CT, Krasavin M. 5-(Sulfamoyl)thien-2-yl 1,3-oxazole inhibitors of carbonic anhydrase II with hydrophilic periphery. J Enzyme Inhib Med Chem 2022; 37:1005-1011. [PMID: 35350949 PMCID: PMC8973362 DOI: 10.1080/14756366.2022.2056733] [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] [Indexed: 11/24/2022] Open
Abstract
Hydrophilic derivatives of an earlier described series of carbonic anhydrase inhibitors have been designed, prepared and profiled against a panel of carbonic anhydrase isoforms, including the glaucoma-related hCA II. For all hydrophilic derivatives, computational prediction of intraocular permeability routes showed the predominance of conjunctival rather than corneal absorption. The potentially reactive primary or secondary amine periphery of these compounds makes them suitable candidates for bioconjugation to polymeric drug carriers. As was shown previously, the most active hCA II inhibitor is efficacious in alleviating intraocular pressure in normotensive rabbits with efficacy matching that of dorzolamide.
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Zhukovsky D, Dar’in D, Bakulina O, Krasavin M. Preparation and Synthetic Applications of Five-to-Seven-Membered Cyclic α-Diazo Monocarbonyl Compounds. Molecules 2022; 27:2030. [PMID: 35335391 PMCID: PMC8954351 DOI: 10.3390/molecules27062030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/16/2022] [Accepted: 03/16/2022] [Indexed: 11/16/2022] Open
Abstract
The reactivity of cyclic α-diazo monocarbonyl compounds differs from that of their acyclic counterparts. In this review, we summarize the current literature available on the synthesis and synthetic applications of three major classes of cyclic α-diazo monocarbonyl compounds: α-diazo ketones, α-diazo lactones and α-diazo lactams.
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Krasavin M, Bubyrev A, Kazantsev A, Heim C, Maiwald S, Zhukovsky D, Dar’in D, Hartmann MD, Bunev A. Replacing the phthalimide core in thalidomide with benzotriazole. J Enzyme Inhib Med Chem 2022; 37:527-530. [PMID: 35220840 PMCID: PMC8890552 DOI: 10.1080/14756366.2021.2024525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The advent of proteolysis-targeting chimaeras (PROTACs) mandates that new ligands for the recruitment of E3 ligases are discovered. The traditional immunomodulatory drugs (IMiDs) such as thalidomide and its analogues (all based on the phthalimide glutarimide core) bind to Cereblon, the substrate receptor of the CRL4ACRBN E3 ligase. We designed a thalidomide analogue in which the phthalimide moiety was replaced with benzotriazole, using an innovative synthesis strategy. Compared to thalidomide, the resulting “benzotriazolo thalidomide” has a similar binding mode, but improved properties, as revealed in crystallographic analyses, affinity assays and cell culture.
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Krasavin M, Grintsevich S, Sapegin A. Significant Broadening of the Substrate Scope for the Hydrated Imidazoline Ring Expansion (HIRE) via the Use of Lithium Hexamethyldisilazide. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0040-1719882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractSubstrates that are insufficiently activated towards the hydrated imidazoline ring expansion (HIRE) process have been previously found to deliver exclusively the products of aminoalkyl side-chain ring expansion. Attempted reversal of the process by thermal activation towards HIRE failed. We have found that for such problematic substrates the HIRE-type ring expansion can be effectively achieved by applying lithium hexamethyldisilazide (LHMDS) in toluene. LHMDS is thought to promote intramolecular transamidation, which leads to ring-expanded 10- and 11-membered heterocyclic products in modest to good yields. The process significantly broadens the substrate scope amenable to the HIRE strategy.
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Guranova N, Bakulina O, Dar'in D, Kantin G, Krasavin M. Homophthalic Monoesters: A New Type of Reagents for the Castagnoli‐Cushman Reaction. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Krasavin M, Peshkov AA, Makhmet A, Bakulina O, Kanov E, Gainetdinov R, Peshkov VA, Dar’in D. A General Approach to Spirocyclic Piperidines via Castagnoli–Cushman Chemistry. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0040-1719878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractUnsaturated spirocyclic lactams stemming from a variant of the three-component Castagnoli–Cushman reaction successfully underwent hydrogenation to enable access to fully saturated spirocyclic lactams. The subsequent lactam reduction gave rise to 2-spiro piperidine building blocks. The latter can be further elaborated in compound libraries and, on their own, show propensity to activate trace amine-associated receptor 1 (TAAR1), an important target for CNS disease.
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Krasavin M, Grintsevich S, Sapegin A, Duszyńska B, Bojarski AJ. An Attempt to Achieve Hydrated Imidazoline Ring Expansion (HIRE) of Diarene-Fused [1,4]Diazepinones Delivers Selective Dopamine D2 Receptor Ligands. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1649-5317] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
AbstractAttempts to extend the hydrated imidazoline ring expansion (HIRE) strategy to a series of diarene-fused [1,4]diazepinones (earlier applied successfully to bis-pyrido substrate nevirapine) did not result in ring expansion but, rather, led to 2-aminoethyl side chain expulsion. This seeming setback (setting the limitations to the HIRE methodology substrate scope) led to the discovery of selective dopamine D2 ligands with elements of structure–activity relationships.
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Krasavin M, Dar’in D, Vepreva A, Kantin G. A General Way to Spiro-Annulated 2-Benzoxepines via Rh2(esp)2-Catalyzed [5+2] Cycloaddition of Diazo Arylidene Succinimides to Ketones. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0037-1610790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
AbstractThe formation of spirocyclic 2-benzoxepines by Rh2(esp)2-catalyzed decomposition of diazo arylidene succinimides in the presence of ketones was investigated. This transformation, which is a formal [5+2] cycloaddition of styryl rhodium carbenes to the carbonyl group, occurs in high yields under mild conditions, with high carbonyl substrate tolerance and diastereoselectivity. The developed general method opens access to rare spiro (hetero)cyclic scaffolds with great potential in drug discovery.
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Paramonova P, Bakulina O, Nabiyev A, Dar'in D, Krasavin M. Castagnoli‐Cushman Reaction of 3‐Aryl Glutaric Acids: A Convenient, Diastereoselective Reaction for 6‐Oxo‐2,4‐diarylpiperidine‐3‐carboxylic Acid Scaffold. ChemistrySelect 2022. [DOI: 10.1002/slct.202104011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Firsov A, Bakulina O, Dar'in D, Sokolov VV, Krasavin M. Synthesis of γ-Sultam-Annelated δ-Lactams via the Castagnoli-Cushman Reaction of Sultam-Based Dicarboxylic Acids. J Org Chem 2022; 87:1537-1540. [PMID: 35000381 DOI: 10.1021/acs.joc.1c02456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An unusual type of highly reactive sultam-based dicarboxylic acids and correscponding anhydrides was employed in the Castagnoli-Cushman reaction delivering diastereomerically pure adducts at room temperature. Due to steric congestion, the initial adducts were prone to decarboxylation affording diastereomeric mixtures of bicyclic sultam lactams, separable by HPLC. The choice of a protecting group on the sultam nitrogen atom allows liberation of the NH-sultam, which is not only suitable for further modification but represents a known pharmacophore for carbonic anhydrase inhibition.
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Bannykh A, Levashova E, Bakulina O, Krasavin M. New reagent space and new scope for the Castagnoli–Cushman reaction of oximes and 3-arylglutaconic anhydrides. Org Biomol Chem 2022; 20:8643-8648. [DOI: 10.1039/d2ob01675c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The Castagnoli–Cushman reaction of oximes, previously known only for homophthalic anhydride, was extended to 3-arylglutaconic anhydrides to produce a new family of cyclic hydroxamic acids from a significantly improved diversity of oxime substrates.
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Budeev A, Kantin G, Dar'in D, Krasavin M. Ugi reaction-derived 1H-pyrrol-2(5H)-ones proved as valid precursors to a new class of heterocyclic α-diazocarbonyl compounds. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2021.153598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Levashova E, Bakulina O, Dar'in D, Krasavin M. Catalyst‐Free Synthesis of Diastereomerically Pure 3‐Cyanoazetidin‐2‐ones via Thermally Promoted Tandem Wolff Rearrangement–Staudinger [2+2] Cycloaddition. ChemistrySelect 2021. [DOI: 10.1002/slct.202103446] [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]
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Kalinin S, Malkova A, Sharonova T, Sharoyko V, Bunev A, Supuran CT, Krasavin M. Carbonic Anhydrase IX Inhibitors as Candidates for Combination Therapy of Solid Tumors. Int J Mol Sci 2021; 22:13405. [PMID: 34948200 PMCID: PMC8705727 DOI: 10.3390/ijms222413405] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/07/2021] [Accepted: 12/10/2021] [Indexed: 02/06/2023] Open
Abstract
Combination therapy is becoming imperative for the treatment of many cancers, as it provides a higher chance of avoiding drug resistance and tumor recurrence. Among the resistance-conferring factors, the tumor microenvironment plays a major role, and therefore, represents a viable target for adjuvant therapeutic agents. Thus, hypoxia and extracellular acidosis are known to select for the most aggressive and resilient phenotypes and build poorly responsive regions of the tumor mass. Carbonic anhydrase (CA, EC 4.2.1.1) IX isoform is a surficial zinc metalloenzyme that is proven to play a central role in regulating intra and extracellular pH, as well as modulating invasion and metastasis processes. With its strong association and distribution in various tumor tissues and well-known druggability, this protein holds great promise as a target to pharmacologically interfere with the tumor microenvironment by using drug combination regimens. In the present review, we summarized recent publications revealing the potential of CA IX inhibitors to intensify cancer chemotherapy and overcome drug resistance in preclinical settings.
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Dar'in D, Kantin G, Kalinin S, Sharonova T, Bunev A, Ostapenko GI, Nocentini A, Sharoyko V, Supuran CT, Krasavin M. Corrigendum to "Investigation of 3-sulfamoyl coumarins against cancer-related IX and XII isoforms of human carbonic anhydrase as well as cancer cells leads to the discovery of 2-oxo-2H-benzo[h]chromene-3-sulfonamide - A new caspase-activating proapoptotic agent" [J. Med. Chem. 222 (2021) 113589]. Eur J Med Chem 2021; 225:113788. [PMID: 34438125 DOI: 10.1016/j.ejmech.2021.113788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bubyrev A, Malkova K, Kantin G, Dar'in D, Krasavin M. Metal-Free Synthesis of 1,5-Disubstituted 1,2,3-Triazoles. J Org Chem 2021; 86:17516-17522. [PMID: 34797670 DOI: 10.1021/acs.joc.1c02309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A three-component synthesis of 1,5-disubstituted 1,2,3-triazoles from α-acetyl-α-diazomethane sulfonamides, primary aliphatic amines, and aromatic aldehydes is presented. The 1,2,3-triazoles can be accessed in two alternative variants, depending on the substitutions in the sulfonamide portion of the diazo reagent. In one variant, intermediate 1,2,3-triazoline-4-sulfonamides are isolated chromatographically and then subjected to thermally promoted aromatization with elimination of sulfur(IV) oxide and amine. In the other variant, both chemical transformations take place in a single step conducted at room temperature.
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Safrygin A, Zhmurov P, Dar’in D, Silonov S, Kasatkina M, Zonis Y, Gureev M, Krasavin M. Three-component Castagnoli-Cushman reaction with ammonium acetate delivers 2-unsubstituted isoquinol-1-ones as potent inhibitors of poly(ADP-ribose) polymerase (PARP). J Enzyme Inhib Med Chem 2021; 36:1916-1921. [PMID: 34461785 PMCID: PMC8409965 DOI: 10.1080/14756366.2021.1969386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/08/2021] [Accepted: 08/11/2021] [Indexed: 10/25/2022] Open
Abstract
An earlier described three-component variant of the Castagnoli-Cushman reaction employing homophthalic anhydrides, carbonyl compound and ammonium acetate was applied towards the preparation of 1-oxo-3,4-dihydroisoquinoline-4-carboxamides with variable substituent in position 3. These compounds displayed inhibitory activity towards poly(ADP-ribose) polymerase (PARP), a clinically validated cancer target. The most potent compound (PARP1/2 IC50 = 22/4.0 nM) displayed the highest selectivity towards PARP2 in the series (selectivity index = 5.5), more advantageous ADME prameters compared to the clinically used PARP inhibitor Olaparib.
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Krasavin M, Zhukovsky D, Solovyev I, Barkhatova D, Dar'in D, Frank D, Martinelli G, Weizel L, Proschak A, Rotter M, Kramer JS, Brunst S, Wichelhaus TA, Proschak E. Rh II -Catalyzed De-symmetrization of Ethane-1,2-dithiol and Propane-1,3-dithiol Yields Metallo-β-lactamase Inhibitors. ChemMedChem 2021; 16:3410-3417. [PMID: 34184833 PMCID: PMC9290507 DOI: 10.1002/cmdc.202100344] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Indexed: 11/07/2022]
Abstract
Diversity-oriented synthesis (DOS) is a rich source for novel lead structures in Medicinal Chemistry. In this study, we present a DOS-compatible method for synthesis of compounds bearing a free thiol moiety. The procedure relies on Rh(II)-catalyzed coupling of dithiols to diazo building blocks. The synthetized library was probed against metallo-β-lactamases (MBLs) NDM-1 and VIM-1. Biochemical and biological evaluation led to identification of novel potent MBL inhibitors with antibiotic adjuvant activity.
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Krasavin M, Zhukovsky D, Solovyev I, Barkhatova D, Dar'in D, Frank D, Martinelli G, Weizel L, Proschak A, Rotter M, Kramer JS, Brunst S, Wichelhaus TA, Proschak E. Cover Feature: Rh
II
‐Catalyzed De‐symmetrization of Ethane‐1,2‐dithiol and Propane‐1,3‐dithiol Yields Metallo‐β‐lactamase Inhibitors (ChemMedChem 22/2021). ChemMedChem 2021. [DOI: 10.1002/cmdc.202100692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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