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Doubský J, Rádl S, Cinibulk J, Klvaňa R. Synthesis of Fingolimod Employing Regioselective Aziridine Ring-Opening Reaction as a Key Step. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.1c00248] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jan Doubský
- API Synthesis Development, Zentiva, k.s., U Kabelovny 130, 102 37, Prague 10, Czech Republic
| | - Stanislav Rádl
- API Synthesis Development, Zentiva, k.s., U Kabelovny 130, 102 37, Prague 10, Czech Republic
| | - Josef Cinibulk
- API Synthesis Development, Zentiva, k.s., U Kabelovny 130, 102 37, Prague 10, Czech Republic
| | - Robert Klvaňa
- API Synthesis Development, Zentiva, k.s., U Kabelovny 130, 102 37, Prague 10, Czech Republic
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2
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Atici EB, Yazar Y, Rıdvanoğlu N. Synthesis, characterization and control of eight process related and two genotoxic fingolimod impurities by a validated RP-UPLC method. Biomed Chromatogr 2022; 36:e5316. [PMID: 34981532 DOI: 10.1002/bmc.5316] [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: 07/13/2021] [Revised: 11/14/2021] [Accepted: 12/13/2021] [Indexed: 11/09/2022]
Abstract
An HPLC method has been described in European and United States Pharmacopoeias (Ph. Eur. and USP) for determination of nine organic impurities (imp A-I) in fingolimod hydrochloride, a synthetic sphingosine-1-phosphate receptor modulator. The manufacturing process of fingolimod hydrochloride consists of multi-step chemical synthesis wherein controls of precursors, intermediates and process steps should be done to assure the final quality of drug substance. We synthesized and isolated eight process related impurities (FINI imp A-H) of fingolimod, different than the pharmacopoeial impurities. One unknown process-related impurity was found in key-intermediate (FINI) and was identified by LC-MS. Characterization of all impurities were done by using spectroscopic techniques (1 H & 13 C NMR, FTIR, MS), and the mechanistic pathways to the formation of these impurities were also discussed. Two of these impurities were evaluated as potential genotoxic impurities due to their alerting structures and alkylating properties (alkyl sulfonates and alkyl halides, class 3, ICH M7). We also developed and validated a RP-UPLC method in line with ICH Q2 guidelines for control these impurities (FINI imp A-H) and to assure the pharmacopoeial quality drug substance.
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Affiliation(s)
| | - Yücel Yazar
- DEVA Holding A.Ş., R&D Center, Karaağaç Mh, Tekirdağ, TURKEY
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Rana S, Biswas JP, Paul S, Paik A, Maiti D. Organic synthesis with the most abundant transition metal–iron: from rust to multitasking catalysts. Chem Soc Rev 2021; 50:243-472. [DOI: 10.1039/d0cs00688b] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The promising aspects of iron in synthetic chemistry are being explored for three-four decades as a green and eco-friendly alternative to late transition metals. This present review unveils these rich iron-chemistry towards different transformations.
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Affiliation(s)
- Sujoy Rana
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
| | | | - Sabarni Paul
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
| | - Aniruddha Paik
- Department of Chemistry
- University of North Bengal
- Darjeeling
- India
| | - Debabrata Maiti
- Department of Chemistry
- IIT Bombay
- Mumbai-400076
- India
- Tokyo Tech World Research Hub Initiative (WRHI)
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4
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Yamashita K, Kume Y, Ashibe S, Puspita CAD, Tanigawa K, Michihata N, Wakamori S, Ikeuchi K, Yamada H. Total Synthesis of Mallotusinin. Chemistry 2020; 26:16408-16421. [PMID: 32614090 DOI: 10.1002/chem.202002753] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Indexed: 11/11/2022]
Abstract
The total synthesis of mallotusinin, which bears a tetrahydroxydibenzofuranoyl (THDBF) bridge between the 2-oxygen and 4-oxygen of glucose on corilagin with a 3,6-O-(R)-hexahydroxydiphenoyl (HHDP) bridge, is described. The key features of the total synthesis are: 1) improvements of our previously reported method to synthesize corilagin; 2) establishment of the THDBF skeleton via an unusual intramolecular SN Ar reaction of an HHDP analogue, and 3) the application of a two-step bislactonization strategy for a HHDP bridge construction into the 2,4-O-THDBF bridge. Oxidative phenol coupling of 1,2,4-orthoacetyl-3,6-di-(4-O-benzylgalloyl)-α-d-glucopyranose and the orthoester cleavage of the coupling product without the pyranose-furanose ring transformation are key reactions for the improved synthesis of corilagin, which enabled the adequate supply of a corilagin precursor that was required to develop the mallotusinin synthesis. These established methods are expected to help develop the synthesis of other ellagitannins with a bridge between the two oxygens of corilagin.
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Affiliation(s)
- Kohei Yamashita
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, 669-1337, Japan
| | - Yuji Kume
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, 669-1337, Japan
| | - Seiya Ashibe
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, 669-1337, Japan
| | - Cicilia A D Puspita
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, 669-1337, Japan
| | - Kotaro Tanigawa
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, 669-1337, Japan
| | - Naoki Michihata
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, 669-1337, Japan
| | - Shinnosuke Wakamori
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, 669-1337, Japan
| | - Kazutada Ikeuchi
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, 669-1337, Japan.,Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, 060-0810, Japan
| | - Hidetoshi Yamada
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, 669-1337, Japan
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5
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Guérinot A, Cossy J. Iron-Catalyzed C-C Cross-Couplings Using Organometallics. Top Curr Chem (Cham) 2016; 374:49. [PMID: 27573401 DOI: 10.1007/s41061-016-0047-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 06/20/2016] [Indexed: 01/15/2023]
Abstract
Over the last decades, iron-catalyzed cross-couplings have emerged as an important tool for the formation of C-C bonds. A wide variety of alkenyl, aryl, and alkyl (pseudo)halides have been coupled to organometallic reagents, the most currently used being Grignard reagents. Particular attention has been devoted to the development of iron catalysts for the functionalization of alkyl halides that are generally challenging substrates in classical cross-couplings. The high functional group tolerance of iron-catalyzed cross-couplings has encouraged organic chemists to use them in the synthesis of bioactive compounds. Even if some points remain obscure, numerous studies have been carried out to investigate the mechanism of iron-catalyzed cross-coupling and several hypotheses have been proposed.
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Affiliation(s)
- Amandine Guérinot
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231, ESPCI Paris/CNRS/PSL* Research Institute, 10 rue Vauquelin, 75231, Paris Cedex 05, France.
| | - Janine Cossy
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231, ESPCI Paris/CNRS/PSL* Research Institute, 10 rue Vauquelin, 75231, Paris Cedex 05, France
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Affiliation(s)
- Ingmar Bauer
- Department Chemie, Technische Universität Dresden, Bergstraße 66, 01069 Dresden, Germany
| | - Hans-Joachim Knölker
- Department Chemie, Technische Universität Dresden, Bergstraße 66, 01069 Dresden, Germany
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7
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Bedford RB, Brenner PB, Carter E, Clifton J, Cogswell PM, Gower NJ, Haddow MF, Harvey JN, Kehl JA, Murphy DM, Neeve EC, Neidig ML, Nunn J, Snyder BER, Taylor J. Iron Phosphine Catalyzed Cross-Coupling of Tetraorganoborates and Related Group 13 Nucleophiles with Alkyl Halides. Organometallics 2014. [DOI: 10.1021/om500518r] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Robin B. Bedford
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Peter B. Brenner
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Emma Carter
- School
of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Jamie Clifton
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Paul M. Cogswell
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Nicholas J. Gower
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Mairi F. Haddow
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Jeremy N. Harvey
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Jeffrey A. Kehl
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Damien M. Murphy
- School
of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Emily C. Neeve
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Michael L. Neidig
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Joshua Nunn
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Benjamin E. R. Snyder
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Joseph Taylor
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
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8
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Ito H, Yamamoto T, Yoshimoto N, Tsushima N, Muraoka H, Ogawa S. Synthesis and Properties of Thieno[3,2-b]thiophene Derivatives for Application of OFET Active Layer. HETEROATOM CHEMISTRY 2012. [DOI: 10.1002/hc.21059] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hiroki Ito
- Department of Chemistry and Bioengineering; Faculty of Engineering; Iwate University; 4-3-5 Ueda; Morioka; Iwate; 020-8551; Japan
| | - Tatsuya Yamamoto
- Research Center for Composite Device Technology; Iwate University; 5-6-3 Nimaibashi; Hanamaki; Iwate; 025-0312; Japan
| | | | - Noboru Tsushima
- Research Center for Composite Device Technology; Iwate University; 5-6-3 Nimaibashi; Hanamaki; Iwate; 025-0312; Japan
| | - Hiroki Muraoka
- Department of Chemistry and Bioengineering; Faculty of Engineering; Iwate University; 4-3-5 Ueda; Morioka; Iwate; 020-8551; Japan
| | - Satoshi Ogawa
- Department of Chemistry and Bioengineering; Faculty of Engineering; Iwate University; 4-3-5 Ueda; Morioka; Iwate; 020-8551; Japan
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