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Golec B, Gorski A, Thummel RP, Sierakowski M, Waluk J. Solvent effects on the photooxidation of indolepyrazines. Photochem Photobiol Sci 2023; 22:333-344. [PMID: 36342639 DOI: 10.1007/s43630-022-00317-w] [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: 07/19/2022] [Accepted: 10/04/2022] [Indexed: 11/09/2022]
Abstract
Photodestruction of 2-(pyrazin-2'-yl)-1H-indole and 2,5-di(1H-indol-2'-yl)pyrazine involves singlet oxygen generation and its rapid insertion into the indole ring with the formation of benzoxazinone derivatives: 2-(pyrazin-2-yl)-4H-3,1-benzoxazin-4-one and 2-[5-(1H-indol-2-yl)pyrazin-2-yl]-4H-3,1-benzoxazin-4-one. The quantum yield of this reaction strongly depends on the environment. It is definitely smaller in protic methanol than in aprotic acetonitrile or n-hexane. The observed effect of photostabilization is explained by formation of hydrogen bonded complexes between the chromophore and alcohol, which results in lower triplet formation efficiency and, in consequence, decrease of singlet oxygen formation quantum yield.
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Affiliation(s)
- Barbara Golec
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland.
| | - Aleksander Gorski
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Randolph P Thummel
- Department of Chemistry, University of Houston, Houston, TX, 77204-5003, USA
| | - Maciej Sierakowski
- Institute of Biological Sciences, Cardinal Stefan Wyszyński University in Warsaw, Wóycickiego 1/3, 01-938, Warsaw, Poland
| | - Jacek Waluk
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland.,Faculty of Mathematics and Science, Cardinal Stefan Wyszyński University, Dewajtis 5, 01-815, Warsaw, Poland
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2
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Chen C, Cai J, Ren YH, Xu Y, Liu HL, Zhao YY, Chen XF, Liu ZB. Antimicrobial activity, chemical composition and mechanism of action of Chinese chive ( Allium tuberosum Rottler) extracts. Front Microbiol 2022; 13:1028627. [PMID: 36386646 PMCID: PMC9664698 DOI: 10.3389/fmicb.2022.1028627] [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: 08/26/2022] [Accepted: 10/13/2022] [Indexed: 01/25/2023] Open
Abstract
Chinese chive (Allium tuberosum Rottler) is a popular food from Allium species in East and Southeast Asia. Most Allium species possess characteristic aromas and have antimicrobial activity. In this study, the antimicrobial activities of root, leaf, and scape extracts of Chinese chive at different pH levels (3.0, 5.0, 7.0, 9.0, and 10.7) were compared. The most pronounced activity was produced by the scape extract, and the greatest activity was obtained at pH 5.0. HPLC and GC-MS analysis showed that the major active ingredient was 2-amino-5-methylbenzoic acid. The mechanism of action of Chinese chive scape extracts may involve the depression or disruption of cell membrane integrity, according to our results of the leakage of electrolytes and protein, as well as scanning electron microscopy and transmission electron microscopy observations.
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Affiliation(s)
- Cun Chen
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, China,Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, College of Chemistry and Life Science, Chengdu Normal University, Chengdu, Sichuan, China
| | - Jing Cai
- West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, China
| | - Ying-hong Ren
- Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, College of Chemistry and Life Science, Chengdu Normal University, Chengdu, Sichuan, China
| | - Yue Xu
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Hong-ling Liu
- Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, College of Chemistry and Life Science, Chengdu Normal University, Chengdu, Sichuan, China
| | - Yu-yang Zhao
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xing-fu Chen
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, China,*Correspondence: Xing-fu Chen,
| | - Zhi-bin Liu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, China,Zhi-bin Liu,
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Yang J, Mendowicz RJ, Verhelst SHL. Tagged Benzoxazin-4-Ones as Novel Activity-Based Probes for Serine Proteases. Chembiochem 2021; 22:1578-1581. [PMID: 33438794 DOI: 10.1002/cbic.202000848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/13/2021] [Indexed: 12/12/2022]
Abstract
Activity-based probes (ABPs) are valuable chemical tools for profiling enzymes. They have been particularly useful in the study of proteases. ABPs rely on electrophilic scaffolds that covalently modify the target enzymes. Ideally, they can be made in a fast and uncomplicated manner. Here, we explore alkyne-substituted benzoxazin-4-ones as ABPs for serine proteases, because they inhibitserine proteases covalently and their synthesis is very straightforward. We show that alkyne-tagged benzoxazin-4-ones can be used in two-step bioorthogonal tandem labeling procedures or pre-functionalized with a biotin or fluorophore. We demonstrate that these reagents can be used to label and identify various serine proteases. Therefore, we expect that tagged benzoxazin-4-ones will offer easily synthesizable tools for profiling of serine proteases.
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Affiliation(s)
- Jian Yang
- Laboratory of Chemical Biology, Department of Cellular and Molecular Medicine, KU Leuven, University of Leuven, Herestraat 49, Box 802, 3000, Leuven, Belgium
| | - Rafal J Mendowicz
- Laboratory of Chemical Biology, Department of Cellular and Molecular Medicine, KU Leuven, University of Leuven, Herestraat 49, Box 802, 3000, Leuven, Belgium
| | - Steven H L Verhelst
- Laboratory of Chemical Biology, Department of Cellular and Molecular Medicine, KU Leuven, University of Leuven, Herestraat 49, Box 802, 3000, Leuven, Belgium.,AG Chemical Proteomics, Leibniz Institute for Analytical Sciences ISAS, Otto-Hahn-Straße 6b, 44227, Dortmund, Germany
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4
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Kahler JP, Lenders S, van de Plassche MAT, Verhelst SHL. Facile Synthesis of Aminomethyl Phosphinate Esters as Serine Protease Inhibitors with Primed Site Interaction. ACS Med Chem Lett 2020; 11:1739-1744. [PMID: 32944141 DOI: 10.1021/acsmedchemlett.0c00284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 08/10/2020] [Indexed: 12/22/2022] Open
Abstract
Serine proteases comprise about one-third of all proteases, and defective regulation of serine proteases is involved in numerous diseases. Therefore, serine protease inhibitors are promising drug candidates. Aminomethyl diphenyl phosphonates have been regularly used as scaffolds for covalent serine protease inhibition and the design of activity-based probes. However, they cannot make use of a protease's primed site. Therefore, we developed a facile two-step synthesis toward a set of phenyl phosphinates, which is a related scaffold but can interact with the primed site. We tested their inhibitory activity on five different serine proteases and found that a phenyl group directly attached to the phosphorus atom leads to superior activity compared with phosphonates.
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Affiliation(s)
- Jan Pascal Kahler
- Laboratory of Chemical Biology, Department of Cellular and Molecular Medicine, KU Leuven − University of Leuven, Herestraat 49 Box
802, 3000 Leuven, Belgium
| | - Stijn Lenders
- Laboratory of Chemical Biology, Department of Cellular and Molecular Medicine, KU Leuven − University of Leuven, Herestraat 49 Box
802, 3000 Leuven, Belgium
| | - Merel A. T. van de Plassche
- Laboratory of Chemical Biology, Department of Cellular and Molecular Medicine, KU Leuven − University of Leuven, Herestraat 49 Box
802, 3000 Leuven, Belgium
| | - Steven H. L. Verhelst
- Laboratory of Chemical Biology, Department of Cellular and Molecular Medicine, KU Leuven − University of Leuven, Herestraat 49 Box
802, 3000 Leuven, Belgium
- AG Chemical Proteomics, Leibniz Institute for Analytical Sciences − ISAS, Otto-Hahn-Str. 6b, 44227 Dortmund, Germany
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5
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6
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Tang ZL, Wang L, Tan JZ, Wan YC, Jiao YC. Synthesis and Fungicidal Activity of 1-(Carbamoylmethyl)-2-aryl-3,1-benzoxazines. Molecules 2017; 22:molecules22071103. [PMID: 28684698 PMCID: PMC6152388 DOI: 10.3390/molecules22071103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 06/25/2017] [Accepted: 06/27/2017] [Indexed: 01/21/2023] Open
Abstract
A series of new 1-(carbamoylmethyl)-2-aryl-3,1-benzoxazines were prepared in moderate to good yields by BF3·OEt2-catalyzed reactions of aromatic aldehydes with 2-(N-substituted carbamoylmethylamino)benzyl alcohols. The structures of the target compounds were confirmed by IR, 1H-NMR, 13C-NMR, and elemental analyses. The fungicidal activities of the target compounds against plant fungi were preliminarily evaluated, and some of them exhibited good activity.
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Affiliation(s)
- Zi-Long Tang
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan University of Science and Technology, Xiangtan 411201, China.
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.
| | - Lian Wang
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan University of Science and Technology, Xiangtan 411201, China.
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.
| | - Jing-Zhao Tan
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan University of Science and Technology, Xiangtan 411201, China.
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.
| | - Yi-Chao Wan
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan University of Science and Technology, Xiangtan 411201, China.
| | - Yin-Chun Jiao
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.
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7
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Mugnaini C, Pedani V, Giunta D, Sechi B, Solinas M, Casti A, Castelli MP, Giorgi G, Corelli F. Synthesis, structural properties, and pharmacological evaluation of 2-(acylamino)thiophene-3-carboxamides and analogues thereof. RSC Adv 2014. [DOI: 10.1039/c3ra45546g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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8
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Nikpour F, Bahmani A, Havasi F, Sharafi-Kolkeshvandi M. Guanidinum Chloride as Dehydrocyclization Agent in the Synthesis of 2-Fuctionalized (4H)-3,1-Benzoxazine-4-ones. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1649] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Farzad Nikpour
- Department of Chemistry, Faculty of Sciences; University of Kurdistan; Pasdaran Blvd., P.O. Box: 66135-416 Sanandaj Iran
| | - Asrin Bahmani
- Department of Chemistry, Faculty of Sciences; University of Kurdistan; Pasdaran Blvd., P.O. Box: 66135-416 Sanandaj Iran
| | - Forugh Havasi
- Department of Chemistry, Faculty of Sciences; University of Kurdistan; Pasdaran Blvd., P.O. Box: 66135-416 Sanandaj Iran
| | - Mahnaz Sharafi-Kolkeshvandi
- Department of Chemistry, Faculty of Sciences; University of Kurdistan; Pasdaran Blvd., P.O. Box: 66135-416 Sanandaj Iran
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Hsieh PW, Yu HP, Chang YJ, Hwang TL. Synthesis and evaluation of benzoxazinone derivatives on activity of human neutrophil elastase and on hemorrhagic shock-induced lung injury in rats. Eur J Med Chem 2010; 45:3111-5. [DOI: 10.1016/j.ejmech.2010.03.046] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2009] [Revised: 03/25/2010] [Accepted: 03/29/2010] [Indexed: 12/24/2022]
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10
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Briel D, Rybak A, Kronbach C, Unverferth K, González Tanarro CM, Gütschow M. Thieno[2,3-d]pyrimidines and -[1,3]oxazines as glutamate antagonists and investigations on the inhibitory potency toward human leukocyte elastase. J Heterocycl Chem 2010. [DOI: 10.1002/jhet.375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Mehner C, Müller D, Kehraus S, Hautmann S, Gütschow M, König GM. New peptolides from the cyanobacterium Nostoc insulare as selective and potent inhibitors of human leukocyte elastase. Chembiochem 2009; 9:2692-703. [PMID: 18924217 DOI: 10.1002/cbic.200800415] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Eight new cyanopeptolins (insulapeptolides A-H) were obtained from the cyanobacterium Nostoc insulare. Their isolation was guided by their bioactivity toward the target enzyme human leukocyte elastase, molecular biological investigations, and MALDI-TOF analysis. These peptides are selective inhibitors of human leukocyte elastase with activities in the nanomolar range. Insulapeptolide D was the most potent compound with an IC(50) value of 85 nM (K(i) value of 36 nM).
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Affiliation(s)
- Christian Mehner
- Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany
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12
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Häcker HG, Grundmann F, Lohr F, Ottersbach PA, Zhou J, Schnakenburg G, Gütschow M. 2-Amino- and 2-alkylthio-4H-3,1-benzothiazin-4-ones: synthesis, interconversion and enzyme inhibitory activities. Molecules 2009; 14:378-402. [PMID: 19145216 PMCID: PMC6253953 DOI: 10.3390/molecules14010378] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2008] [Revised: 01/08/2009] [Accepted: 01/12/2009] [Indexed: 11/21/2022] Open
Abstract
The synthetic access to 2-sec-amino-4H-3,1-benzothiazin-4-ones 2 was explored. Compounds 2 were available from methyl 2-thioureidobenzoates 1, 2-thioureidobenzoic acids 3, and novel 2-thioureidobenzamides 6, respectively, under different conditions. 2-Alkylthio-4H-3,1-benzothiazin-4-ones 5 have been prepared from anthranilic acid following a two step route. Both, benzothiazinones 2 and 5 underwent ring cleavage reactions to produce thioureas 1 and 6, respectively. Twelve benzothiazinones were evaluated as inhibitors against a panel of eight proteases and esterases to identify one selective inhibitor of human cathepsin L, 2b, and one selective inhibitor of human leukocyte elastase, 5i.
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Affiliation(s)
- Hans-Georg Häcker
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany; E-mails: (H-G. H.), (F. G.), (F. L.), (P-A. O.), (J. Z.)
| | - Florian Grundmann
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany; E-mails: (H-G. H.), (F. G.), (F. L.), (P-A. O.), (J. Z.)
| | - Friederike Lohr
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany; E-mails: (H-G. H.), (F. G.), (F. L.), (P-A. O.), (J. Z.)
| | - Philipp A. Ottersbach
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany; E-mails: (H-G. H.), (F. G.), (F. L.), (P-A. O.), (J. Z.)
| | - Jing Zhou
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany; E-mails: (H-G. H.), (F. G.), (F. L.), (P-A. O.), (J. Z.)
| | - Gregor Schnakenburg
- Institute of Inorganic Chemistry, University of Bonn, Gerhard-Domagk-Straße 1, D-53121 Bonn, Germany; E-mail: (G. S.)
| | - Michael Gütschow
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany; E-mails: (H-G. H.), (F. G.), (F. L.), (P-A. O.), (J. Z.)
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Colson E, Wallach J, Hauteville M. Synthesis and anti-elastase properties of 6-amino-2-phenyl-4H-3,1-benzoxazin-4-one aminoacyl and dipeptidyl derivatives. Biochimie 2005; 87:223-30. [PMID: 15760716 DOI: 10.1016/j.biochi.2004.10.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2004] [Accepted: 10/08/2004] [Indexed: 11/25/2022]
Abstract
A series of 6-amino-2-phenyl-4H-3,1-benzoxazin-4-one aminoacyl and dipeptidyl derivatives, in which aminoacids and dipeptides are linked to the benzoxazinone moiety via an amide bond, were synthesized and tested in vitro for their inhibitory activity towards human leukocyte elastase (HLE). When compared to their values without inhibitors, the residual enzymatic activities decrease with time, indicating a time-dependent inhibition. The most potent inhibitions were obtained when Z-Arg-(Pmc), Z-Val-Phe, Z-Ala-Val or Z-Val-Ala are linked to the 6-amino group. Twenty-five new compounds were synthesized.
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Affiliation(s)
- Eric Colson
- Laboratoire de Biochimie Analytique et Synthèse Bioorganique, Université Claude Bernard Lyon 1, 43, boulevard du 11 Novembre 1918, 69 622 Villeurbanne cedex, France
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Gütschow M, Kuerschner L, Neumann U, Pietsch M, Löser R, Koglin N, Eger K. 2-(diethylamino)thieno1,3ŏxazin-4-ones as stable inhibitors of human leukocyte elastase. J Med Chem 1999; 42:5437-47. [PMID: 10639285 DOI: 10.1021/jm991108w] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of 2-(diethylamino)thieno1,3ŏxazin-4-ones was synthesized and evaluated in vitro for inhibitory activity toward human leukocyte elastase (HLE). The Gewald thiophene synthesis was utilized to obtain several ethyl 2-aminothiophene-3-carboxylates. These precursors were subjected to a five-step route to obtain thieno2,3-d1,3ŏxazin-4-ones bearing various substituents at positions 5 and 6. Both thieno2,3-d and thieno3,2-d fused oxazin-4-ones possess extraordinary chemical stability, which was expressed as rate constants of the alkaline hydrolysis. The kinetic parameters of the HLE inhibition were determined. The most potent compound, 2-(diethylamino)-4H-1benzothieno2,3-d1,3ŏxazin-4-one, exhibited a K(i) value of 5.8 nM. 2-(Diethylamino)thieno1, 3ŏxazin-4-ones act as acyl-enzyme inhibitors of HLE, similar to the inhibition of serine proteases by 4H-3,1-benzoxazin-4-ones. The isosteric benzene-thiophene replacement accounts for an enhanced stability of the acyl-enzyme intermediates.
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Affiliation(s)
- M Gütschow
- Institute of Pharmacy, University of Leipzig, D-04103 Leipzig, Germany
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