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Westphal R, Venturini Filho E, Loureiro LB, Tormena CF, Pessoa C, Guimarães CDJ, Manso MP, Fiorot RG, Campos VR, Resende JALC, Medici F, Greco SJ. Green Synthesis of Spiro Compounds with Potential Anticancer Activity through Knoevenagel/Michael/Cyclization Multicomponent Domino Reactions Organocatalyzed by Ionic Liquid and Microwave-Assisted. Molecules 2022; 27:molecules27228051. [PMID: 36432151 PMCID: PMC9697156 DOI: 10.3390/molecules27228051] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/10/2022] [Accepted: 11/13/2022] [Indexed: 11/22/2022] Open
Abstract
In this work a microwave-assisted Knoevenagel/Michael/cyclization multicomponent domino methodology, using ethanol as solvent and the ionic liquid 1-methylimidazolium chloride as catalyst was developed for the synthesis of spiro compounds. The reaction conditions considered ideal were determined from a methodological study varying solvent, catalyst, amount of catalyst, temperature, and heating mode. Finally, the generality of the methodology was evaluated by exploring the scope of the reaction, varying the starting materials (isatin, malononitrile, and barbituric acid). Overall, the twelve spiro compounds were synthesized in good yields (43-98%) and the X-ray structure of compound 1b was obtained. In addition, the in vitro antiproliferative activities of the spirocycles against four types of human cancer cell lines including HCT116 (human colon carcinoma), PC3 (prostate carcinoma), HL60 (promyelocytic leukemia), and SNB19 (astrocytoma) were screened by MTT-based assay. It is noteworthy that spiro compound 1c inhibited the four cell lines tested with the lowest IC50 values: 52.81 µM for HCT116, 74.40 µM for PC3, 101 µM for SNB19, and 49.72 µM for HL60.
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Affiliation(s)
- Regina Westphal
- Chemistry Department, Federal University of Espírito Santo, Fernando Ferrari Avenue 514, Vitória 29075-910, ES, Brazil
| | - Eclair Venturini Filho
- Chemistry Department, Federal University of Espírito Santo, Fernando Ferrari Avenue 514, Vitória 29075-910, ES, Brazil
| | - Laiza Bruzadelle Loureiro
- Institute of Chemistry, University of Campinas, Josué de Castro Street, Campinas 13083-970, SP, Brazil
| | - Cláudio Francisco Tormena
- Institute of Chemistry, University of Campinas, Josué de Castro Street, Campinas 13083-970, SP, Brazil
| | - Claudia Pessoa
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza 60430-275, CE, Brazil
| | - Celina de Jesus Guimarães
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza 60430-275, CE, Brazil
| | - Mariana Palmeira Manso
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza 60430-275, CE, Brazil
| | - Rodolfo Goetze Fiorot
- Campus do Valonguinho, Institute of Chemistry, Fluminense Federal University, Niterói 24020-141, RJ, Brazil
| | - Vinicius Rangel Campos
- Campus do Valonguinho, Institute of Chemistry, Fluminense Federal University, Niterói 24020-141, RJ, Brazil
| | | | - Fabrizio Medici
- Chemistry Department, University of Milan, Via Golgi 19, 20133 Milan, Italy
| | - Sandro José Greco
- Chemistry Department, Federal University of Espírito Santo, Fernando Ferrari Avenue 514, Vitória 29075-910, ES, Brazil
- Correspondence:
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Kánya N, Kun S, Somsák L. Glycopyranosylidene-Spiro-Morpholinones: Evaluation of the Synthetic Possibilities Based on Glyculosonamide Derivatives and a New Method for the Construction of the Morpholine Ring. Molecules 2022; 27:molecules27227785. [PMID: 36431884 PMCID: PMC9698030 DOI: 10.3390/molecules27227785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/07/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022]
Abstract
Glycosylidene-spiro-morpholin(on)es are scarcely described skeletons in the literature. In this work, we have systematically explored the synthetic routes towards such morpholinones based on the reactions of O-peracylated hept-2-ulopyranosonamide derivatives of D-gluco and D-galacto configuration. Koenigs-Knorr type glycosylation of 2-chloroethanol, allylic and propargylic alcohols by (glyculosylbromide)onamides furnished the expected glycosides. The 2-chloroethyl glycosides were ring closed to the corresponding spiro-morpholinones by treatment with K2CO3. The (allyl glyculosid)onamides gave diastereomeric mixtures of spiro-5-hydroxymorpholinones by ozonolysis and 5-iodomethylmorpholinones under iodonium ion mediated conditions. The ozonolytic method has not yet been known for the construction of morpholine rings, therefore, it was also extended to O-allyl mandelamide. The 5-hydroxymorpholinones were subjected to oxidation and acid catalyzed elimination reactions to give the corresponding morpholine-3,5-dions and 5,6-didehydro-morpholin-3-ones, respectively. Base induced elimination of the 5-iodomethylmorpholinones gave 5-methyl-2H-1,4-oxazin-3(4H)-ones. O-Acyl protecting groups of all of the above compounds were removed under Zemplén conditions. Some of the D-gluco configured unprotected compounds were tested as inhibitors of glycogen phosphorylase, but showed no significant effect.
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Pruteanu E, Gîrbu V, Ungur N, Persoons L, Daelemans D, Renaud P, Kulcițki V. Preparation of Antiproliferative Terpene-Alkaloid Hybrids by Free Radical-Mediated Modification of ent-Kauranic Derivatives. Molecules 2021; 26:4549. [PMID: 34361708 PMCID: PMC8347134 DOI: 10.3390/molecules26154549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/18/2021] [Accepted: 07/19/2021] [Indexed: 11/16/2022] Open
Abstract
A convenient strategy for molecular editing of available ent-kauranic natural scaffolds has been developed based on radical mediated C-C bond formation. Iodine atom transfer radical addition (ATRA) followed by rapid ionic elimination and radical azidoalkylation were investigated. Both reactions involve radical addition to the exo-methylenic double bond of the parent substrate. Easy transformations of the obtained adducts lead to extended diterpenes of broad structural diversity and artificial diterpene-alkaloid hybrids possessing lactam and pyrrolidine pharmacophores. The cytotoxicity of selected diterpenic derivatives was examined by in vitro testing on several tumor cell lines. The terpene-alkaloid hybrids containing N-heterocycles with unprecedented spiro-junction have shown relevant cytotoxicity and promising selectivity indexes. These results represent a solid basis for following research on the synthesis of such derivatives based on available natural product templates.
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Affiliation(s)
- Elena Pruteanu
- Institute of Chemistry (MECC), Str. Academiei, 3, MD-2028 Chișinău, Moldova; (E.P.); (V.G.); (N.U.)
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Vladilena Gîrbu
- Institute of Chemistry (MECC), Str. Academiei, 3, MD-2028 Chișinău, Moldova; (E.P.); (V.G.); (N.U.)
| | - Nicon Ungur
- Institute of Chemistry (MECC), Str. Academiei, 3, MD-2028 Chișinău, Moldova; (E.P.); (V.G.); (N.U.)
| | - Leentje Persoons
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, Herestraat 49, 3000 Leuven, Belgium; (L.P.); (D.D.)
| | - Dirk Daelemans
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, Herestraat 49, 3000 Leuven, Belgium; (L.P.); (D.D.)
| | - Philippe Renaud
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Veaceslav Kulcițki
- Institute of Chemistry (MECC), Str. Academiei, 3, MD-2028 Chișinău, Moldova; (E.P.); (V.G.); (N.U.)
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Liu W, Xu W, Wang J, Lu H, Xu PF, Wei H. Synthesis of Spirocycles via Ni-Catalyzed Intramolecular Coupling of Thioesters and Olefins. Chemistry 2021; 27:7651-7656. [PMID: 33887079 DOI: 10.1002/chem.202100390] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Indexed: 12/17/2022]
Abstract
A nickel-catalyzed intramolecular coupling of thioesters and olefins has been developed for the efficient synthesis of spirocycles, a privileged scaffold commonly found in natural products. This transformation is characterized by the simultaneous transfer of both acyl and thiol moieties to the alkene, with the suppression of decarbonylation and β-hydrogen elimination. Initial mechanistic investigations are consistent with an oxidative addition/olefin insertion/reductive elimination mechanism. The incorporated methylene sulfide substituent can undergo a variety of further reactions to increase molecular diversity and complexity. These results demonstrate that thioester derivatives can be used as powerful building blocks for the assembly of complex scaffolds.
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Affiliation(s)
- Wenfei Liu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, P. R. China
| | - Wenhua Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, P. R. China
| | - Juanjuan Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, P. R. China
| | - Hong Lu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, P. R. China
| | - Peng-Fei Xu
- Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Hao Wei
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, P. R. China
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Honmore VS, Natu AD, Khedkar VM, Arkile MA, Sarkar D, Rojatkar SR. Two antibacterial spiro compounds from the roots of Artemisia pallens wall: evidence from molecular docking. Nat Prod Res 2021; 36:2465-2472. [PMID: 33749414 DOI: 10.1080/14786419.2021.1902325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Bioassay-guided isolation from acetone extract of the roots of Artemisia pallens Wall yielded two spiro compounds (1 and 2). The structures of these compounds were determined on the basis of spectroscopic techniques such as IR, MS, 1 D and 2 D- NMR. The acetone extract, fractions and the isolated two compounds were investigated for their antibacterial activity against two gram negative (E. coli, P. aeruginosa) and two gram positive (S. aureus, B. subtilis) bacterial strains. Compound (2) showed the best spectra of activity with IC50 and MIC values between 2.48-3.08 and 12.78 - 21.77 µM and Compound (1) with 2.57-3.69 and 38.17 - 80.57 µM, respectively, for the four bacterial strains, whereas inactive against Mycobacterium tuberculosis. Molecular docking study could further help in understanding the various interactions between these compounds and DNA gyrase active site in detail and thereby could provide valuable insight into the mechanism of action.
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Affiliation(s)
- Varsha S Honmore
- Post Graduate and Research Center, Department of Chemistry, MES Abasaheb Garware College, Pune, Maharashtra, India
| | - Arun D Natu
- Post Graduate and Research Center, Department of Chemistry, MES Abasaheb Garware College, Pune, Maharashtra, India
| | - Vijay M Khedkar
- Department of Pharmaceutical Chemistry, School of Pharmacy, Vishwakarma University, Pune, Maharashtra, India
| | - Manisha A Arkile
- Combichem-Bioresource Center, Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune, Maharashtra, India
| | - Dhiman Sarkar
- Combichem-Bioresource Center, Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune, Maharashtra, India
| | - Supada R Rojatkar
- R&D Centre in Pharmaceutical Sciences and Applied Chemistry, Poona College of Pharmacy Campus, Bharati Vidyapeeth Deemed University, Pune, Maharashtra, India
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Szabó KE, Kun S, Mándi A, Kurtán T, Somsák L. Glucopyranosylidene-Spiro-Thiazolinones: Synthetic Studies and Determination of Absolute Configuration by TDDFT-ECD Calculations. Molecules 2017; 22:molecules22101760. [PMID: 29048398 PMCID: PMC6151563 DOI: 10.3390/molecules22101760] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 10/18/2017] [Accepted: 10/18/2017] [Indexed: 11/19/2022] Open
Abstract
Reactions of O-peracylated C-(1-bromo-β-d-glucopyranosyl)formamides with thioamides furnished the corresponding glucopyranosylidene-spiro-thiazolin-4-one. While O-debenzoylations under a variety of conditions resulted in decomposition, during O-deacetylations the addition of MeOH to the thiazolinone moiety was observed, and with EtOH and water similar adducts were isolated or detected. The structure and stereochemistry of the new compounds were established by means of NMR and electronic circular dichroism (ECD) data supported by time-dependent density functional theory ECD (TDDFT-ECD) calculations. TDDFT-ECD calculations could efficiently distinguish the proposed epimeric products having different absolute configuration in the spiro heterocyclic ring.
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Affiliation(s)
- Katalin E Szabó
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002 Debrecen, Hungary.
| | - Sándor Kun
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002 Debrecen, Hungary.
| | - Attila Mándi
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002 Debrecen, Hungary.
| | - Tibor Kurtán
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002 Debrecen, Hungary.
| | - László Somsák
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002 Debrecen, Hungary.
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Xiao SJ, Guo DL, Zhang MS, Chen F, Ding LS, Zhou Y. Three new oxazoline alkaloids from Gymnotheca chinensis. J Asian Nat Prod Res 2016; 18:719-723. [PMID: 26949983 DOI: 10.1080/10286020.2016.1146255] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 01/21/2016] [Indexed: 06/05/2023]
Abstract
Three novel oxazoline alkaloids, 1-oxa-3-azaspiro [4.5] dec-2-ene-8-one (1), 1-oxa-3-azaspiro [4.5] dec-2, 6-diene-8-one (2), and 1-oxa-3-azaspiro [4.5] dec-10-methoxy-2, 6-diene-8-one (3) were isolated from the methanol extract of the whole plant of Gymnotheca chinensis. The chemical structures were established by means of spectroscopic analysis including one- and two-dimensional NMR spectroscopy.
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Affiliation(s)
- Shi-Ji Xiao
- a School of Pharmacy , Zunyi Medical Universty , Zunyi 563000 , China
| | - Da-Le Guo
- b Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu 610041 , China
| | - Mao-Sheng Zhang
- a School of Pharmacy , Zunyi Medical Universty , Zunyi 563000 , China
| | - Fang Chen
- c College of Life Science , Sichuan University , Chengdu 610041 , China
| | - Li-Sheng Ding
- b Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu 610041 , China
| | - Yan Zhou
- b Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu 610041 , China
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Savithri MP, Yuvaraj PS, Reddy BSR, Raja R, SubbiahPandi A. Crystal structure of methyl 1-methyl-2-oxo-spiro-[indoline-3,2'-oxirane]-3'-carboxyl-ate. Acta Crystallogr E Crystallogr Commun 2015; 71:o274-5. [PMID: 25995901 PMCID: PMC4420098 DOI: 10.1107/s2056989015006398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 03/29/2015] [Indexed: 11/10/2022]
Abstract
In the title compound, C12H11NO4, the dihedral angle between the indole ring system (r.m.s. deviation = 0.019 Å) and the oxirane ring is 88.8 (2)°. The oxirane O atom and the bridging ester O atom are in an approximate syn conformation [O-C-C-O = -25.4 (3)°] In the crystal, inversion dimers linked by pair of C-H⋯O hydrogen bonds generate R 2 (2)(8) loops, where the C-H donor group forms part of the oxirane ring. A second C-H⋯O inter-action arising from one of the C-H groups of the benzene ring links the dimers into [001] double chains.
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Affiliation(s)
- M P Savithri
- Department of Physics, Queen Mary's College (Autonomous), Chennai 600 004, India
| | - P S Yuvaraj
- University of Madras, Industrial Chemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India
| | - B S R Reddy
- University of Madras, Industrial Chemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India
| | - R Raja
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
| | - A SubbiahPandi
- Department of Physics, Presidency College (Autonomous), Chennai 600 005, India
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Zhang LJ, Wu Q, Sun J, Yan CG. Synthesis of functionalized spiro[indoline-3,4'-pyridines] and spiro[indoline-3,4'-pyridinones] via one-pot four-component reactions. Beilstein J Org Chem 2013; 9:846-51. [PMID: 23766799 PMCID: PMC3678513 DOI: 10.3762/bjoc.9.97] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Accepted: 04/03/2013] [Indexed: 01/27/2023] Open
Abstract
In the presence of triethylamine as catalyst, the one-pot four-component reactions of arylamines, methyl propiolate, isatin and malononitrile afforded the functionalized spiro[indoline-3,4’-pyridine] derivatives in good yields. Similar reactions with ethyl cyanoacetate successfully afforded the functionalized spiro[indoline-3,4’-pyridines] and spiro[indoline-3,4’-pyridinones] as the main products according to the structures of the arylamines and other primary amines.
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Affiliation(s)
- Li-Juan Zhang
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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Sun Y, Sun J, Yan CG. Synthesis of spiro[dihydropyridine-oxindoles] via three-component reaction of arylamine, isatin and cyclopentane-1,3-dione. Beilstein J Org Chem 2013; 9:8-14. [PMID: 23399791 PMCID: PMC3566796 DOI: 10.3762/bjoc.9.2] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 12/03/2012] [Indexed: 11/29/2022] Open
Abstract
A fast and convenient protocol for the synthesis of novel spiro[dihydropyridine-oxindole] derivatives in satisfactory yields was developed by the three-component reactions of arylamine, isatin and cyclopentane-1,3-dione in acetic acid at room temperature. On the other hand the condensation of isatin with two equivalents of cyclopentane-1,3-dione gave 3,3-bis(2-hydroxy-5-oxo-cyclopent-1-enyl)oxindole in high yields. The reaction mechanism and substrate scope of this novel reaction is briefly discussed.
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Affiliation(s)
- Yan Sun
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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