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Ma J, Huang W, Huang X, Yang N, Gong J, Xie Z, Li G, Liao Q, Chen Y. Construction of dual-chiral covalent organic frameworks for enantioselective separation. J Chromatogr A 2024; 1728:465014. [PMID: 38797135 DOI: 10.1016/j.chroma.2024.465014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 05/07/2024] [Accepted: 05/20/2024] [Indexed: 05/29/2024]
Abstract
Developing novel chiral stationary phases (CSPs) with versatility is of great importance in enantiomer separation. This study fabricated a dual-chiral covalent organic framework (PA-CA COF) via successive post-synthetic modifications. The chiral trans-1,2-cyclohexanediamine (CA) and (D)-penicillamine (PA) groups were periodically aligned within nanochannels of the COF, allowing selective recognition of enantiomers through intermolecular interactions. It can be a versatile high-performance liquid chromatography (HPLC) CSP for separating a wide range of enantiomers, including chiral pharmaceutical intermediates and chiral drugs. With separation performance comparable to commercial chiral columns and even greater versatility, the PA-CA COF@SiO2 column held promise for practical applications. Chiral separation results combined with molecular simulation indicated that the mixed mode of PA and CA resulted in the broad separation capability of PA-CA COF. The introduction of the dual-chiral COFs concept opens up a new avenue for chiral recognition and separation, holding great potential for practical enantiomer separation.
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Affiliation(s)
- Juanqiong Ma
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Wenyi Huang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Xinyu Huang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Na Yang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Jing Gong
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Zhiyong Xie
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen, 518106, China
| | - Gongke Li
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong Province 510006, China
| | - Qiongfeng Liao
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Yanlong Chen
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
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Su X, Sun J, Liu J, Wang Y, Wang J, Tang W, Gong J. Bifunctional Chiral Agent Enables One-pot Spontaneous Deracemization of Racemic Compounds. Angew Chem Int Ed Engl 2024; 63:e202402886. [PMID: 38526333 DOI: 10.1002/anie.202402886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/24/2024] [Accepted: 03/25/2024] [Indexed: 03/26/2024]
Abstract
A novel one-pot deracemization method using a bifunctional chiral agent (BCA) is proposed for the first time to convert a racemate to the desired enantiomer. Specifically, chiral α, (α-diphenyl-2-pyrrolidinemethanol) formed enantiospecific cocrystals with racemic dihydromyricetin, and used its own alkaline catalysis to catalyze the racemization between the (2R,3R)-enantiomer and (2S,3S)-enantiomer in solution, achieving a one-pot spontaneous deracemization. This strategy was also successfully extended to the deracemization of three other racemic compound drugs: (R,S)-carprofen, (R,S)-indoprofen, and (R,S)-indobufen. The one-pot deracemization method based on the BCA strategy provides a feasible approach to address the incompatibility between cocrystallization and racemization reactions that are commonly encountered in the cocrystallization-induced deracemization process and opens a new window to develop essential enantiomerically pure pharmaceutical products with atom economy.
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Affiliation(s)
- Xin Su
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University; The Co-Innovation Centre of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, P. R. China
| | - Jie Sun
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University; The Co-Innovation Centre of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, P. R. China
- China Petroleum Planning and Engineering Institute (CPPEI), China National Petroleum Corporation, Beijing, 100083, People's Republic of China
| | - Jiaqiang Liu
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University; The Co-Innovation Centre of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, P. R. China
| | - Yaoguo Wang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University; The Co-Innovation Centre of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, P. R. China
| | - Jingkang Wang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University; The Co-Innovation Centre of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, P. R. China
| | - Weiwei Tang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University; The Co-Innovation Centre of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, P. R. China
| | - Junbo Gong
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University; The Co-Innovation Centre of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, P. R. China
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Huang S, Shinohara KI, Teraguchi M, Kaneko T, Aoki T. Helix-Sense-Selective Permeation of Racemic Helical Oligoacetylenes through One-Handed Helical Channels in Polymer Membranes. ACS Macro Lett 2024; 13:627-631. [PMID: 38708870 DOI: 10.1021/acsmacrolett.4c00169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
Helix-sense-selective permeation (HSSPerm) of racemic helical oligoacetylenes through one-handed helical channels has been realized. The one-handed helical channels were created in the one-handed helical polyacetylene membranes by the helix-sense-selective decomposition (HSS-SCAT) of the corresponding racemic helical polyacetylene membranes, followed by removing the formed oligomers. Since the HSS-SCAT reaction proceeds with just circularly polarized visible light with no reagents, no catalysts, no solvent, and high selectivity, the chiral channel-containing membrane with high purity was obtained easily. This membrane could separate racemic helical oligoacetylenes enantioselectively in up to 30%ee. To our knowledge, this is the first example of HSSPerm.
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Affiliation(s)
- Shuaishuai Huang
- Graduate School of Science and Technology, Niigata University, Ikarashi 2-8050, Nishi-Ku, Niigata 950-2181, Japan
| | - Ken-Ichi Shinohara
- Graduate School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahi-dai, Nomi, Ishikawa 923-1292, Japan
| | - Masahiro Teraguchi
- Department of Chemistry and Chemical Engineering, Graduate School of Science and Technology, Niigata University, Ikarashi 2-8050, Nishi-Ku, Niigata 950-2181, Japan
| | - Takashi Kaneko
- Department of Chemistry and Chemical Engineering, Graduate School of Science and Technology, Niigata University, Ikarashi 2-8050, Nishi-Ku, Niigata 950-2181, Japan
| | - Toshiki Aoki
- Department of Chemistry and Chemical Engineering, Graduate School of Science and Technology, Niigata University, Ikarashi 2-8050, Nishi-Ku, Niigata 950-2181, Japan
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Zhao HY, Liu GL, Xu Q, Pei YR, Jin LY. Chirality-induced supramolecular nanodishes: enantioselectivity and energy transfer. SOFT MATTER 2024; 20:1884-1891. [PMID: 38321960 DOI: 10.1039/d3sm01747h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Self-assembly is one of the most important issues of fabricating materials with precise chiral nanostructures. Herein, we constructed a chiral assembly system from amphiphiles containing hydrophobic/hydrophilic chiral coils bonded to hexabiphenyl, exhibiting controllable enantioselectivity over various aggregation behaviors. The chiral coils aroused various steric hindrances affecting intrinsic stacking tendency and compactness, leading to different aggregating behaviors, as concluded from the self-assembly investigation. The strong π-π stacking interaction between the long hexabiphenyl groups gave rise to a relatively compact arrangement in the aqueous solution, whereas the methyl side groups on the coil segments raised steric hindrance at the rigid-flexible interface, resulting in loose stacking and formation of nanostructures with a larger curvature. Compared with the achiral molecule 1 that formed micron-sized large sheets, molecules 2-4 containing chiral coils aggregated into nanodishes, which looked exactly like mosquito-repellent incense, to overcome surface tension. The helical structures effectively amplified chirality and exhibited strong circular dichroism (CD) signals, which indicate enantioselectivity. In addition, the relatively loose packing behavior permitted their co-assembly with a dye and aided efficient energy transfer, providing a foundation for the chiral application of supramolecules. Thus, by introducing a simple methyl side group in amphiphilic molecules, asymmetric synthesis and energy transfer efficiency can be realized.
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Affiliation(s)
- Hui-Yu Zhao
- Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education, Yanbian University, Yanji 133002, People's Republic of China.
| | - Gui-Lang Liu
- Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education, Yanbian University, Yanji 133002, People's Republic of China.
| | - Qing Xu
- Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education, Yanbian University, Yanji 133002, People's Republic of China.
| | - Yi-Rong Pei
- Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education, Yanbian University, Yanji 133002, People's Republic of China.
| | - Long Yi Jin
- Department of Chemistry, National Demonstration Centre for Experimental Chemistry Education, Yanbian University, Yanji 133002, People's Republic of China.
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