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Martens J, Bhushan R. Enantioseparations in Achiral Environments and Chromatographic Systems. Isr J Chem 2016. [DOI: 10.1002/ijch.201600086] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jürgen Martens
- Institute of Chemistry; Carl von Ossietzky University Oldenburg; Carl-von-Ossietzky-Strasse 9-11, DE- 26129 Oldenburg Germany
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Maeno M, Tokunaga E, Yamamoto T, Suzuki T, Ogino Y, Ito E, Shiro M, Asahi T, Shibata N. Self-disproportionation of enantiomers of thalidomide and its fluorinated analogue via gravity-driven achiral chromatography: mechanistic rationale and implications. Chem Sci 2015; 6:1043-1048. [PMID: 29560192 PMCID: PMC5811091 DOI: 10.1039/c4sc03047h] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 10/30/2014] [Indexed: 01/13/2023] Open
Abstract
We report on the self-disproportionation of enantiomers (SDE) of non-racemic thalidomide (1) and 3'-fluorothalidomide (2) under the conditions of gravity-driven achiral silica-gel chromatography. The presence of a fluorine atom on the chiral center dramatically alters the structure and polarity of 1 and 2, resulting in the opposite SDE profile on silica-gel.
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Affiliation(s)
- Mayaka Maeno
- Department of Nanopharmaceutical Sciences and Department of Frontier Materials , Nagoya Institute of Technology , Gokiso, Showa-ku , Nagoya 466-8555 , Japan .
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical Sciences and Department of Frontier Materials , Nagoya Institute of Technology , Gokiso, Showa-ku , Nagoya 466-8555 , Japan .
| | - Takeshi Yamamoto
- Department of Nanopharmaceutical Sciences and Department of Frontier Materials , Nagoya Institute of Technology , Gokiso, Showa-ku , Nagoya 466-8555 , Japan .
| | - Toshiya Suzuki
- Department of Life Science and Medical Bioscience , Waseda University (TWIns) , Wakamatsu-cho 2-2, Shinjuku-ku , Tokyo 162-8480 , Japan .
| | - Yoshiyuki Ogino
- Department of Life Science and Medical Bioscience , Waseda University (TWIns) , Wakamatsu-cho 2-2, Shinjuku-ku , Tokyo 162-8480 , Japan .
| | - Emi Ito
- Department of Nanopharmaceutical Sciences and Department of Frontier Materials , Nagoya Institute of Technology , Gokiso, Showa-ku , Nagoya 466-8555 , Japan .
| | - Motoo Shiro
- Consolidated Research Institute for Advanced Science and Medical Care , Waseda University (ASMeW) , Waseda-tsurumaki-cho 513, Shinjuku-ku , Tokyo 162-0041 , Japan
| | - Toru Asahi
- Department of Life Science and Medical Bioscience , Waseda University (TWIns) , Wakamatsu-cho 2-2, Shinjuku-ku , Tokyo 162-8480 , Japan .
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences and Department of Frontier Materials , Nagoya Institute of Technology , Gokiso, Showa-ku , Nagoya 466-8555 , Japan .
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Bhushan R, Nagar H, Martens J. Resolution of enantiomers with both achiral phases in chromatography: conceptual challenge. RSC Adv 2015. [DOI: 10.1039/c5ra01496d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
(A): TLC enantioresolution of (±)-selenomethionine and (B): three β-blockers, using (−)-quinine and l-glutamic acid, as chiral inducing reagents, respectively, mobile and stationary phase are achiral.
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Affiliation(s)
- Ravi Bhushan
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee – 247667
- India
| | - Hariom Nagar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee – 247667
- India
| | - Jürgen Martens
- Institute of Chemistry
- Carl von Ossietzky University Oldenburg
- DE-26129 Oldenburg (Oldg)
- Germany
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Huang J, Tang M, Li X, Zhong GZ, Li CM. Novel layered crystalline organic polymer-inorganic hybrid material comprising calcium phosphate with unique architectures for superior performance catalyst support. Dalton Trans 2014; 43:17500-8. [DOI: 10.1039/c4dt01374c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Various pores or channels produced by the modification of PS-PVPA chain could contribute to significant impact on the excellent catalytic activity.
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Affiliation(s)
- Jing Huang
- Institute for Clean Energy & Advanced Materials
- Southwest University
- Chongqing 400715, PR China
- Research Center for Advanced Computation
- Xihua University; School of Physics and Chemistry
| | - Mei Tang
- Institute for Clean Energy & Advanced Materials
- Southwest University
- Chongqing 400715, PR China
| | - Xin Li
- Institute for Clean Energy & Advanced Materials
- Southwest University
- Chongqing 400715, PR China
| | - Guo Zhen Zhong
- Institute for Clean Energy & Advanced Materials
- Southwest University
- Chongqing 400715, PR China
| | - Chang Ming Li
- Institute for Clean Energy & Advanced Materials
- Southwest University
- Chongqing 400715, PR China
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