1
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Wang T, Cheng J, Wang N, Zhang X, Jiang L, Yu D, Wang L. Study on the stability of intermediates in the process of enzymatic hydrolysis of phosphatidic acid by phospholipase A1. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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2
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Rota P, La Rocca P, Cirillo F, Piccoli M, Allevi P, Anastasia L. The acidic hydrolysis of N-acetylneuraminic 4,5-oxazoline allows a direct functionalization of the C5 position of Neu5Ac2en (DANA). RSC Adv 2020; 10:162-165. [PMID: 35492520 PMCID: PMC9048243 DOI: 10.1039/c9ra10215a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 12/13/2019] [Indexed: 12/18/2022] Open
Abstract
The Neu5Ac 4,5-oxazoline ring-opening allows the direct generation of a free C5-amino group key to synthesize antiviral drugs.
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Affiliation(s)
- Paola Rota
- Department of Biomedical, Surgical and Dental Sciences
- University of Milan
- Milan
- Italy
| | - Paolo La Rocca
- Department of Biomedical Sciences for Health
- University of Milan
- Milan
- Italy
| | - Federica Cirillo
- Laboratory of Stem Cells for Tissue Engineering
- IRCCS Policlinico San Donato, San Donato Milanese
- Milan
- Italy
| | - Marco Piccoli
- Laboratory of Stem Cells for Tissue Engineering
- IRCCS Policlinico San Donato, San Donato Milanese
- Milan
- Italy
| | - Pietro Allevi
- Department of Biomedical, Surgical and Dental Sciences
- University of Milan
- Milan
- Italy
| | - Luigi Anastasia
- Laboratory of Stem Cells for Tissue Engineering
- IRCCS Policlinico San Donato, San Donato Milanese
- Milan
- Italy
- University of Vita-Salute San Raffaele
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3
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Petrov AA, Pakal’nis VV, Zerov AV, Yakimovich SI. N → N acyl group migration in N-acylpyrazoles: Isomerization of 1,4-diacyl-5-methyl-1H-pyrazoles to 1,4-diacyl-3-methyl-1H-pyrazoles. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2017. [DOI: 10.1134/s1070428017030125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Gu L, Xue Q, Peng S, Wang G, Han J, Wu X. A novel and facile strategy to inhibit corrosion: thiol-click synthesis of polythiols and their skinning on a metal surface to form super thick protective films. Polym Chem 2016. [DOI: 10.1039/c5py01517k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polythiols were prepared via thiol-click chemistry and employed to form super thick films to inhibit corrosion.
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Affiliation(s)
- Lingxiao Gu
- Zhejiang Key Laboratory of Marine Materials and Protective Technologies
- Key Laboratory of Marine Materials and Related Technologies
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Qingquan Xue
- Zhejiang Key Laboratory of Marine Materials and Protective Technologies
- Key Laboratory of Marine Materials and Related Technologies
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Shusen Peng
- Zhejiang Key Laboratory of Marine Materials and Protective Technologies
- Key Laboratory of Marine Materials and Related Technologies
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Gang Wang
- Zhejiang Key Laboratory of Marine Materials and Protective Technologies
- Key Laboratory of Marine Materials and Related Technologies
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Jin Han
- Zhejiang Key Laboratory of Marine Materials and Protective Technologies
- Key Laboratory of Marine Materials and Related Technologies
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Xuedong Wu
- Zhejiang Key Laboratory of Marine Materials and Protective Technologies
- Key Laboratory of Marine Materials and Related Technologies
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
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5
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Elberembally K. A new procedure for the synthesis of α-acyloxy aldehydes from ketones via α,β-epoxy sulfides. J Sulphur Chem 2015. [DOI: 10.1080/17415993.2015.1057823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6
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Peng L, Zheng Y, Li J, Jin Y, Gao C. Monolithic Neat Graphene Oxide Aerogel for Efficient Catalysis of S → O Acetyl Migration. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00233] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Li Peng
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, People’s Republic of China
| | - Yaochen Zheng
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, People’s Republic of China
- College
of Chemistry and Chemical Engineering, Yantai University, 30 Qingquan
Road, Yantai, 264005, People’s Republic of China
| | - Jiachen Li
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, People’s Republic of China
| | - Yu Jin
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, People’s Republic of China
| | - Chao Gao
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, People’s Republic of China
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7
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Wang G, Peng L, Zheng Y, Gao Y, Wu X, Ren T, Gao C, Han J. Novel triethylamine catalyzed S → O acetyl migration reaction to generate candidate thiols for construction of topological and functional sulfur-containing polymers. RSC Adv 2015. [DOI: 10.1039/c4ra09842k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Various sulphur-containing monomers and polymer materials transformed from different epoxy compounds.
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Affiliation(s)
- Gang Wang
- Key Laboratory of Marine New Materials and Related Technology
- Zhejiang Key Laboratory of Marine Materials and Protection Technology
- Ningbo Institute of Material Technology & Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Li Peng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Yaochen Zheng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Yanqin Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Xuedong Wu
- Key Laboratory of Marine New Materials and Related Technology
- Zhejiang Key Laboratory of Marine Materials and Protection Technology
- Ningbo Institute of Material Technology & Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Tianhui Ren
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Chao Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Jin Han
- Key Laboratory of Marine New Materials and Related Technology
- Zhejiang Key Laboratory of Marine Materials and Protection Technology
- Ningbo Institute of Material Technology & Engineering
- Chinese Academy of Sciences
- Ningbo
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8
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ICH guidance in practice: Degradation behaviour of oseltamivir phosphate under stress conditions. J Pharm Biomed Anal 2012; 62:48-60. [DOI: 10.1016/j.jpba.2012.01.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Revised: 01/03/2012] [Accepted: 01/04/2012] [Indexed: 11/18/2022]
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9
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Gutmann B, Roduit JP, Roberge D, Kappe CO. A two-step continuous-flow synthesis of N-(2-aminoethyl)acylamides through ring-opening/hydrogenation of oxazolines. Chemistry 2011; 17:13146-50. [PMID: 22002534 DOI: 10.1002/chem.201102772] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Bernhard Gutmann
- Christian Doppler Laboratory for Microwave Chemistry and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria
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10
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Bloomer S, Adlercreutz P, Mattiasson B. Triglyceride Interesterification by Lipases: 2. Reaction parameters for the reduction of trisaturated impurities and diglycerides in batch reactions. ACTA ACUST UNITED AC 2009. [DOI: 10.3109/10242429109014863] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- S. Bloomer
- Department of Biotechnology, University of Lund, P. O. Box 124, S-221 00, Lund, Sweden
| | - P. Adlercreutz
- Department of Biotechnology, University of Lund, P. O. Box 124, S-221 00, Lund, Sweden
| | - B. Mattiasson
- Department of Biotechnology, University of Lund, P. O. Box 124, S-221 00, Lund, Sweden
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11
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Affiliation(s)
- G. Bruce Guise
- Division of Protein Chemistry, CSIRO Parkville (Melbourne) Victoria 3052 Australia
| | - Ian W. Stapleton
- Division of Protein Chemistry, CSIRO Parkville (Melbourne) Victoria 3052 Australia
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12
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Gerasimova TN, Kolchina EF. The Smiles rearrangement ofo-aminophenyl phenyl ethers. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc1995v064n02abeh000141] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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13
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14
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de Visser PC, Govaerts C, van Hooft PAV, Overkleeft HS, Van Schepdael A, Hoogmartens J. Liquid chromatography–mass spectrometry study towards the pH and temperature-induced N-acyl migration in polymyxin B. J Chromatogr A 2004; 1058:183-9. [PMID: 15595666 DOI: 10.1016/j.chroma.2004.05.104] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
In the course of the synthesis and purification of new polymyxins and analogues, formation of a by-product with identical mass was observed and it was believed that this might be the result of acyl migration from the Nalpha- to the Ngamma-position of residue alpha,-gamma-diaminobutyric acid 1 (Dab1) under acidic conditions. Therefore, a LC-MS/MS study was initiated to establish the stability of polymyxin B3 in aqueous solution at room temperature and 60 degrees C, as well as different pH values (i.e. 1.4, 4.4 and 7.4). It was shown that the by-product, which is actually formed in the course of the purification of polymyxin B3 after evaporation in acidic medium, has a retention time similar to Ngamma-polymyxin B3. Acyl-migration occurred most rapidly at 60 degrees C and pH 7.4. Furthermore, it was established that migration of the acyl from the Nalpha- to the Ngamma-position of residue Dab1 is reversible and that the equilibrium seems to be in favor of the Nalpha-acylated compound.
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Affiliation(s)
- Peter C de Visser
- Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands
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15
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Odinokov VN, Galiautdinov IV, Nedopekin DV, Khalilov LM, Lafont R. One-step synthesis of shidasterone from 20-hydroxyecdysone. MENDELEEV COMMUNICATIONS 2002. [DOI: 10.1070/mc2002v012n04abeh001627] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Gololobov YG, Galkina MA, Kuz'mintseva IY, Petrovskii PV. A novel electrophilic rearrangement with migration of an alkoxycarbonyl group from carbon to a nitrogen anionic center. Russ Chem Bull 1998. [DOI: 10.1007/bf02495716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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17
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Han X, Gross RW. Structural Determination of Lysophospholipid Regioisomers by Electrospray Ionization Tandem Mass Spectrometry†. J Am Chem Soc 1996. [DOI: 10.1021/ja952326r] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xianlin Han
- Contribution from the Division of Bioorganic Chemistry and Molecular Pharmacology, Departments of Medicine, Chemistry, and Molecular Biology & Pharmacology, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Richard W. Gross
- Contribution from the Division of Bioorganic Chemistry and Molecular Pharmacology, Departments of Medicine, Chemistry, and Molecular Biology & Pharmacology, Washington University School of Medicine, St. Louis, Missouri 63110
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18
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Oliyai R, Safadi M, Meier PG, Hu MK, Rich DH, Stella VJ. Kinetics of acid-catalyzed degradation of cyclosporin A and its analogs in aqueous solution. INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1994; 43:239-47. [PMID: 8005746 DOI: 10.1111/j.1399-3011.1994.tb00386.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The kinetics and mechanism of the degradation of cyclosporin A have been studied under aqueous acidic conditions. The rate of degradation was found to be specific acid-catalyzed over the pH range studied (1-4), with isocyclosporin A as the predominant degradation product. Selective reduction of the olefinic bond of the amino acid 2-N-methyl-(R)-((E)-2-butenyl)-4-methyl-L-threonine (MeBmt) did not affect the overall degradation kinetics and product distribution of cyclosporin A. These observations indicate that the alternative degradation pathway involving intramolecular alkoxy addition to the olefinic bond of amino acid MeBmt apparently does not significantly contribute to the overall degradation kinetics of cyclosporin A in the pH range 1-4. The chemical reactivity of O-acetyl-cyclosporin A was examined to probe the governing mechanism for the isomerization of cyclosporin A. Under identical conditions, O-acetyl-cyclosporin A showed a much greater chemical stability than cyclosporin A, consistent with a mechanism involving the hydroxyoxazolidine intermediate. The chemical stability of cyclosporin C, which contains two beta-hydroxyl groups, was also examined. The rate and product distribution for the degradation of cyclosporin C suggest that under aqueous acidic conditions it undergoes N,O-acyl migration solely at the amino acid residue MeBmt. Additionally, the impact of side-chain bulkiness of amino acid MeBmt was examined by studying the degradation kinetics of a series of cyclosporin A analogs.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- R Oliyai
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence
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20
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Aminoamidines. 5. Synthesis and acetylation of N,N1,N2-triaryl-substituted ?-aminoamidines. Russ Chem Bull 1992. [DOI: 10.1007/bf00863377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Palomer A, Cabré M, Mauleón D, Carganico G. Acid-Promoted Phosphonyl Migration inN-Phosphonyl-α-Aminoalcohols. fromN-(2-Hydroxyethyl)Phosphonamides toO-(2-Aminoethyl)Phosphonates. SYNTHETIC COMMUN 1992. [DOI: 10.1080/00397919208019094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Kolchina EF, Gerasimova TN. Smiles rearrangement of polyfluoro substituted 2-acetylaminodiaryl ethers. Russ Chem Bull 1990. [DOI: 10.1007/bf00960341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Seebach D, Isabelle MPH, Max AS. Diasteroselektive Hydroxyalkylierungen in 1-Stellung von Tetrahydroisochinolinen und Synthese von Aporphin-, Protoberberin- und Phthalid-Alkaloider. Helv Chim Acta 1987. [DOI: 10.1002/hlca.19870700517] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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24
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Kozlova IK. Glycosylation of o-acylamino derivatives of 4-methyl-7-hydroxy-coumarin. Chem Heterocycl Compd (N Y) 1987. [DOI: 10.1007/bf00476373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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27
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Garcia H, Miranda MA, Roquet-Jalmar MF, Martinez-Utrilla R. Influence of enol acetylation on the photo-fries rearrangement of anortho-acylaryl benzoate. European J Org Chem 1982. [DOI: 10.1002/jlac.198219821214] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Valter R�, Batse A�, Valter SP. Synthesis and autooxidative transformation of 2-(2-aminophenyl)-4-hydroxy-3-phenyl-1-isoquinolone. Chem Heterocycl Compd (N Y) 1982. [DOI: 10.1007/bf00513293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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Laatsch H. Dimere Naphthochinone, IV. Synthese von Biramentaceon, Mamegakinon und Rotundichinon. ACTA ACUST UNITED AC 1980. [DOI: 10.1002/jlac.198019800815] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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30
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Zeeck A, Ruß P, Laatsch H, Loeffler W, Wehrle H, Zähner H, Holst H. Stoffwechselprodukte von Mikroorganismen, 172. Isolierung des Antibioticumssemi-Vioxanthin ausPenicillium citreo-viride und Synthese des Xanthomegnins. ACTA ACUST UNITED AC 1979. [DOI: 10.1002/cber.19791120319] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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31
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Thio PA, Kornet MJ. The interconversion of 2-(2-aminophenyl)-3-piperolidinone and 3-(2-piperidylmethyl)-2-indolinone: A ReversibleN⇔N' transacylation. J Heterocycl Chem 1971. [DOI: 10.1002/jhet.5570080321] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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