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Fominova K, Diachuk T, Granat D, Savchuk T, Vilchynskyi V, Svitlychnyi O, Meliantsev V, Kovalchuk I, Litskan E, Levterov VV, Badlo VR, Vaskevych RI, Vaskevych AI, Bolbut AV, Semeno VV, Iminov R, Shvydenko K, Kuznetsova AS, Dmytriv YV, Vysochyn D, Ripenko V, Tolmachev AA, Pavlova O, Kuznietsova H, Pishel I, Borysko P, Mykhailiuk PK. Oxa-spirocycles: synthesis, properties and applications. Chem Sci 2021; 12:11294-11305. [PMID: 34667540 PMCID: PMC8447932 DOI: 10.1039/d1sc03615g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 07/20/2021] [Indexed: 12/27/2022] Open
Abstract
A general approach to a new generation of spirocyclic molecules – oxa-spirocycles – was developed. The key synthetic step was iodocyclization. More than 150 oxa-spirocyclic compounds were prepared. Incorporation of an oxygen atom into the spirocyclic unit dramatically improved water solubility (by up to 40 times) and lowered lipophilicity. More potent oxa-spirocyclic analogues of antihypertensive drug terazosin were synthesized and studied in vivo. A general practical approach to a new generation of spirocyclic molecules – oxa-spirocycles – is developed.![]()
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Shcherbakova V, Dibchak D, Snisarenko M, Skalenko Y, Denisenko AV, Kuznetsova AS, Mykhailiuk PK. Bicyclic Piperidines via [2 + 2] Photocycloaddition. J Org Chem 2021; 86:2200-2209. [PMID: 33211487 DOI: 10.1021/acs.joc.0c02355] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A synthetic strategy to fused bicyclic piperidines-building blocks for medicinal chemistry-is developed. The key step was an intramolecular [2 + 2]-photocyclization. The photochemical step was performed on a gram scale. Crystallographic analysis of the obtained compounds revealed that they occupy a novel chemical space and can be considered as elongated analogues of 3-substituted piperidines.
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Denisenko A, Garbuz P, Shishkina SV, Voloshchuk NM, Mykhailiuk PK. Saturated Bioisosteres of
ortho
‐Substituted Benzenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004183] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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30
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31
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Denisenko A, Garbuz P, Shishkina SV, Voloshchuk NM, Mykhailiuk PK. Saturated Bioisosteres of ortho-Substituted Benzenes. Angew Chem Int Ed Engl 2020; 59:20515-20521. [PMID: 32662201 DOI: 10.1002/anie.202004183] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 04/28/2020] [Indexed: 12/22/2022]
Abstract
Saturated bioisosteres of ortho-disubstituted benzenes (bicyclo[2.1.1]hexanes) were synthesized, characterized and validated. These cores were incorporated into the bioactive compounds Valsartan, Boskalid and Fluxapyroxad instead of the benzene ring. The saturated analogues showed a similar level of antifungal activity compared to that of Boskalid and Fluxapyroxad.
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Levterov VV, Panasyuk Y, Pivnytska VO, Mykhailiuk PK. Innentitelbild: Water‐Soluble Non‐Classical Benzene Mimetics (Angew. Chem. 18/2020). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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33
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Levterov VV, Panasyuk Y, Pivnytska VO, Mykhailiuk PK. Water‐Soluble Non‐Classical Benzene Mimetics. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000548] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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34
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Levterov VV, Panasyuk Y, Pivnytska VO, Mykhailiuk PK. Water-Soluble Non-Classical Benzene Mimetics. Angew Chem Int Ed Engl 2020; 59:7161-7167. [PMID: 32060990 DOI: 10.1002/anie.202000548] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 02/13/2020] [Indexed: 12/20/2022]
Abstract
A new generation of saturated benzene mimetics, 2-oxabicyclo[2.1.1]hexanes, was developed. These compounds were designed as analogues of bicyclo[1.1.1]pentane with an improved water solubility. Crystallographic analysis of 2-oxabicyclo[2.1.1]hexanes revealed that they occupy a novel chemical space, but, at the same time, resemble the motif of meta-disubstituted benzenes.
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Trofymchuk S, Bugera MY, Klipkov AA, Razhyk B, Semenov S, Tarasenko K, Starova VS, Zaporozhets OA, Tananaiko OY, Alekseenko AN, Pustovit Y, Kiriakov O, Gerus II, Tolmachev AA, Mykhailiuk PK. Deoxofluorination of (Hetero)aromatic Acids. J Org Chem 2020; 85:3110-3124. [PMID: 31928000 DOI: 10.1021/acs.joc.9b03011] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Diverse trifluoromethyl-substituted compounds were synthesized by deoxofluorination of cinnamic and (hetero)aromatic carboxylic acids with sulfur tetrafluoride. The obtained products were used as starting materials in the preparation of novel fluorinated amino acids, anilines, and aliphatic amines - valuable building blocks for medicinal chemistry and agrochemistry.
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36
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Mykhailiuk PK, Koenigs RM. Frontispiece: Diazoacetonitrile (N
2
CHCN): A Long Forgotten but Valuable Reagent for Organic Synthesis. Chemistry 2020. [DOI: 10.1002/chem.202080164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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37
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Bugera M, Trofymchuk S, Tarasenko K, Zaporozhets O, Pustovit Y, Mykhailiuk PK. Deoxofluorination of Aliphatic Carboxylic Acids: A Route to Trifluoromethyl-Substituted Derivatives. J Org Chem 2019; 84:16105-16115. [PMID: 31714081 DOI: 10.1021/acs.joc.9b02596] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A practical method for the synthesis of functionalized aliphatic trifluoromethyl-substituted derivatives from aliphatic acids is developed. The transformation proceeds with sulfur tetrafluoride in the presence of water as a key additive. Compared to previous methods, the reaction gives products with full retention of stereo- and absolute configuration of chiral centers.
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Abstract
The replacement of para-substituted benzenes with saturated bi- and polycyclic bioisosteres - bicyclo[1.1.1]pentane, bicyclo[2.2.2]octane and cubane, - often increases the potency, selectivity and metabolic stability of bioactive compounds. The currently remaining challenge for chemists, however, is to rationally design, synthesize and validate the saturated bioisosteres for ortho- and meta-substituted benzenes.
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Mykhailiuk PK, Koenigs RM. Diazoacetonitrile (N 2 CHCN): A Long Forgotten but Valuable Reagent for Organic Synthesis. Chemistry 2019; 26:89-101. [PMID: 31415714 PMCID: PMC6973033 DOI: 10.1002/chem.201903335] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Indexed: 12/18/2022]
Abstract
Diazoacetonitrile (N2CHCN) is a small reactive diazoalkane. It has been synthesized for the first time already in 1898 by Theodor Curtius, however, did not gain much recognition in organic synthesis until recently. Only in 2015, after introduction of in situ and flow protocols for the safe generation of diazoacetonitrile, it started gaining popularity. In this minireview, the synthetic properties and applications of this valuable reagent are discussed.
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Dibchak D, Shcherbacova V, Denisenko AV, Mykhailiuk PK. Convenient Access to Conformationally Rigid Sultams. Org Lett 2019; 21:8909-8914. [DOI: 10.1021/acs.orglett.9b03080] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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41
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Bychek RM, Hutskalova V, Bas YP, Zaporozhets OA, Zozulya S, Levterov VV, Mykhailiuk PK. Difluoro-Substituted Bicyclo[1.1.1]pentanes for Medicinal Chemistry: Design, Synthesis, and Characterization. J Org Chem 2019; 84:15106-15117. [PMID: 31553875 DOI: 10.1021/acs.joc.9b01947] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A practical synthetic approach to the difluoro-substituted bicyclo[1.1.1]pentanes was developed. The key step was an addition of difluorocarbene (:CF2) to electron-rich bicyclo[1.1.0]butanes by the CF3TMS/NaI system. The obtained difluoro-bicyclo[1.1.1]pentanes are suggested to be used as saturated bioisosteres of benzene rings for the purpose of drug discovery projects.
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Mykhailiuk PK, Koenigs RM. Frontispiece: Difluorodiazoethane (CF
2
HCHN
2
): A New Reagent for the Introduction of the Difluoromethyl Group. Chemistry 2019. [DOI: 10.1002/chem.201982461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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43
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Ni S, Padial NM, Kingston C, Vantourout JC, Schmitt DC, Edwards JT, Kruszyk MM, Merchant RR, Mykhailiuk PK, Sanchez BB, Yang S, Perry MA, Gallego GM, Mousseau JJ, Collins MR, Cherney RJ, Lebed PS, Chen JS, Qin T, Baran PS. A Radical Approach to Anionic Chemistry: Synthesis of Ketones, Alcohols, and Amines. J Am Chem Soc 2019; 141:6726-6739. [PMID: 30943023 DOI: 10.1021/jacs.9b02238] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Historically accessed through two-electron, anionic chemistry, ketones, alcohols, and amines are of foundational importance to the practice of organic synthesis. After placing this work in proper historical context, this Article reports the development, full scope, and a mechanistic picture for a strikingly different way of forging such functional groups. Thus, carboxylic acids, once converted to redox-active esters (RAEs), can be utilized as formally nucleophilic coupling partners with other carboxylic derivatives (to produce ketones), imines (to produce benzylic amines), or aldehydes (to produce alcohols). The reactions are uniformly mild, operationally simple, and, in the case of ketone synthesis, broad in scope (including several applications to the simplification of synthetic problems and to parallel synthesis). Finally, an extensive mechanistic study of the ketone synthesis is performed to trace the elementary steps of the catalytic cycle and provide the end-user with a clear and understandable rationale for the selectivity, role of additives, and underlying driving forces involved.
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Fominova K, Diachuk T, Sadkova IV, Mykhailiuk PK. Synthesis of 2,2-Disubstituted Spirocyclic Pyrrolidines by Intramolecular Dieckmann Condensation. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801750] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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45
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Mykhailiuk PK, Koenigs RM. Difluorodiazoethane (CF
2
HCHN
2
): A New Reagent for the Introduction of the Difluoromethyl Group. Chemistry 2019; 25:6053-6063. [DOI: 10.1002/chem.201804953] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 12/07/2018] [Indexed: 01/22/2023]
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46
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Chen TG, Zhang H, Mykhailiuk PK, Merchant RR, Smith CA, Qin T, Baran PS. Quaternary Centers by Nickel-Catalyzed Cross-Coupling of Tertiary Carboxylic Acids and (Hetero)Aryl Zinc Reagents. Angew Chem Int Ed Engl 2019; 58:2454-2458. [PMID: 30623547 PMCID: PMC6391118 DOI: 10.1002/anie.201814524] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Indexed: 01/07/2023]
Abstract
This work bridges a gap in the cross-coupling of aliphatic redox-active esters with aryl zinc reagents. Previously limited to primary, secondary, and specialized tertiary centers, a new protocol has been devised to enable the coupling of general tertiary systems using nickel catalysis. The scope of this operationally simple method is broad, and it can be used to simplify the synthesis of medicinally relevant motifs bearing quaternary centers.
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47
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Chen TG, Zhang H, Mykhailiuk PK, Merchant RR, Smith CA, Qin T, Baran PS. Quaternary Centers by Nickel-Catalyzed Cross-Coupling of Tertiary Carboxylic Acids and (Hetero)Aryl Zinc Reagents. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814524] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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48
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Parasar D, Jayaratna NB, Muñoz-Castro A, Conway AE, Mykhailiuk PK, Dias HVR. Carbonyl complexes of copper(i) stabilized by bridging fluorinated pyrazolates and halide ions. Dalton Trans 2019; 48:6358-6371. [DOI: 10.1039/c9dt00486f] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Halide ions provide a promising tool to stabilize – through bridging interactions – copper carbonyl clusters of fluorinated pyrazolates.
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49
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Hutskalova V, Mykhailiuk PK. Pd-Catalyzed directedCH-(hetero)arylation of cyclic α-amino acids: effects of substituents and the ring size. Org Biomol Chem 2019; 17:4342-4349. [DOI: 10.1039/c9ob00393b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A systematic study on the directed Pd-catalyzed (hetero)arylation of 26 substituted cyclic α-amino acids at the C(3)-atom was performed. For the first time, the 7- and 8-membered cyclic amino acids were introduced to C–H activation. 8–Aminoquinoline was used as a directing group.
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50
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Zinchenko AM, Muzychka LV, Kucher OV, Sadkova IV, Mykhailiuk PK, Smolii OB. One-Pot Synthesis of 6-Aminopyrido[2,3- d]pyrimidin-7-ones. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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