1
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Asif MMA, Lisa SR, Qais N. Synthetic pathways to create asymmetric center at C1 position of 1-substituted-tetrahydro-β-carbolines - a review. RSC Adv 2024; 14:29827-29847. [PMID: 39301229 PMCID: PMC11411349 DOI: 10.1039/d4ra05961a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2024] [Accepted: 09/12/2024] [Indexed: 09/22/2024] Open
Abstract
The 2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indoles or tetrahydro-β-carbolines (THβCs) are tricyclic compounds that are found in various natural sources that exhibit a wide range of important pharmacological activities. Chiral 1-substituted-THβCs, which have an asymmetric center at C1, have attained significant interest due to their possible Monoamine Oxidase (MAO) inhibitory activity, benzodiazepine receptor binding activity, and antimalarial effectiveness against chloroquine-resistant Plasmodium falciparum. This review highlights and summarizes various novel stereoselective approaches to introduce chirality at the C1 position of 1-substituted-THβCs in good yield and enantiomeric excess (ee) or diastereomeric excess (de). These methods include the Pictet-Spengler reaction, chiral auxiliary, Asymmetric Transfer Hydrogenation (ATH) with chiral catalysts, asymmetric addition reaction, and enzymatic catalysis. The syntheses of chiral THβCs are reviewed comprehensively, emphasizing their role in drug development from 1977 to 2024.
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Affiliation(s)
- Md Moaz Ahmed Asif
- Department of Pharmacy, Faculty of Science & Engineering, University of Information Technology & Sciences Holding 190, Road 5, Block J, Baridhara, Maddha Nayanagar, Vatara Dhaka-1212 Bangladesh
| | - Susmita Roy Lisa
- Department of Chemistry, Syracuse University Syracuse NY 13244 USA
| | - Nazmul Qais
- Department of Clinical Pharmacy and Pharmacology, Faculty of Pharmacy, University of Dhaka Dhaka-1000 Bangladesh
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2
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Ma Y, Gao SS, Li X, Wu J, Bao J, Wang L, Cui C. Engineered Imine Reductase Catalyzed Enantiodivergent Synthesis of Alkylated Amphetamines. Org Lett 2024; 26:7565-7570. [PMID: 39230034 DOI: 10.1021/acs.orglett.4c02600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
Less steric ketones exhibited low stereoselectivity toward M5 due to their difficulty in restricting the free rotation of the imine intermediate. An engineered enantio-complementary imine reductase from M5 was obtained with catalytic activity. We identified four key residues that play essential roles in controlling stereoselectivity. Two mutants, I149Y-W234L (up to 99%S ee) and L200M-F260M (up to 99%R ee), were achieved, showing excellent stereoselectivity toward the tested substrates, offering valuable biocatalysts for synthesizing alkylated amphetamines.
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Affiliation(s)
- Yaqing Ma
- CAS Key Laboratroy of Microbial Physiological and Metabolic Engineering, State Key Laboratory of Microbial Reseources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
- University of Chinese Academy of Sciences, Beijing 100040, China
| | - Shu-Shan Gao
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
- National Technology Innovation Center of Synthetic Biology, Tianjin 300308, China
| | - Xin Li
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Jiafeng Wu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Jinping Bao
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Luoyi Wang
- CAS Key Laboratroy of Microbial Physiological and Metabolic Engineering, State Key Laboratory of Microbial Reseources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Chengsen Cui
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
- National Technology Innovation Center of Synthetic Biology, Tianjin 300308, China
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3
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Tian X, Xuan T, Gao J, Zhang X, Liu T, Luo F, Pang R, Shao P, Yang YF, Wang Y. Catalytic enantioselective nitrone cycloadditions enabling collective syntheses of indole alkaloids. Nat Commun 2024; 15:6429. [PMID: 39080291 PMCID: PMC11289135 DOI: 10.1038/s41467-024-50509-4] [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: 12/12/2023] [Accepted: 07/15/2024] [Indexed: 08/02/2024] Open
Abstract
Tetrahydro-β-carboline skeletons are prominent and ubiquitous in an extraordinary range of indole alkaloid natural products and pharmaceutical compounds. Powerful synthetic approaches for stereoselective synthesis of tetrahydro-β-carboline skeletons have immense impacts and have attracted enormous attention. Here, we outline a general chiral phosphoric acid catalyzed asymmetric 1,3-dipolar cycloaddition of 3,4-dihydro-β-carboline-2-oxide type nitrone that enables access to three types of chiral tetrahydro-β-carbolines bearing continuous multi-chiral centers and quaternary chiral centers. The method displays different endo/exo selectivity from traditional nitrone chemistry. The distinct power of this strategy has been illustrated by application to collective and enantiodivergent total syntheses of 40 tetrahydro-β-carboline-type indole alkaloid natural products with divergent stereochemistry and varied architectures.
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Affiliation(s)
- Xiaochen Tian
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao Marine Science and Technology Center, Qingdao, China
| | - Tengfei Xuan
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao Marine Science and Technology Center, Qingdao, China
| | - Jingkun Gao
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Chemistry-Synthesis Technology of Zhejiang Province, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China
| | - Xinyu Zhang
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Tao Liu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Fengbiao Luo
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Ruochen Pang
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Pengcheng Shao
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Yun-Fang Yang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Chemistry-Synthesis Technology of Zhejiang Province, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China.
| | - Yang Wang
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao Marine Science and Technology Center, Qingdao, China.
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4
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Bernhard LM, Zelenska K, Takashima M, Arisawa M, Murai K, Gröger H. Enantioselective Synthesis of Secondary Amines by Combining Oxidative Rearrangement and Biocatalysis in a One-Pot Process. J Org Chem 2024; 89:8513-8520. [PMID: 38836638 DOI: 10.1021/acs.joc.4c00459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
This contribution describes the development of chemoenzymatic one-pot processes, which combine an oxidative rearrangement and a biotransformation catalyzed by an imine reductase (IRED), for the synthesis of highly enantiomerically enriched secondary amines, such as an aryl-substituted pyrrolidine and a benzazepine. The benefits of this chemoenzymatic one-pot approach include high overall conversions (up to >99%), high enantiomeric excesses (up to >99% ee), and a straightforward synthetic approach toward secondary amines without the need to isolate the formed intermediate. For the initial chemical reaction, namely, the oxidative rearrangement, PhI(OAc)2 in methanol is used as a non-natural reagent, whereas the enzymatic step requires only stoichiometric amounts of d-glucose along with catalytic amounts of IRED, glucose dehydrogenase (GDH), and the cofactor NADPH. This methodology, demonstrating the compatibility of a "classic" organic synthesis using a non-natural, highly reactive reagent and a subsequent biocatalytic step, can be applied for different amines as substrates, thus making this concept a versatile tool in synthetic organic chemistry in general and for enantioselective synthesis of heterocyclic secondary amines in particular.
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Affiliation(s)
- Laura M Bernhard
- Chair of Industrial Organic Chemistry and Biotechnology, Faculty of Chemistry, Bielefeld University, Universitätsstr. 25, 33615 Bielefeld, Germany
| | - Kateryna Zelenska
- Chair of Industrial Organic Chemistry and Biotechnology, Faculty of Chemistry, Bielefeld University, Universitätsstr. 25, 33615 Bielefeld, Germany
| | - Mirei Takashima
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Mitsuhiro Arisawa
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Kenichi Murai
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Harald Gröger
- Chair of Industrial Organic Chemistry and Biotechnology, Faculty of Chemistry, Bielefeld University, Universitätsstr. 25, 33615 Bielefeld, Germany
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5
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Yoshimura G, Sakamoto J, Kitajima M, Ishikawa H. Indole C5-Selective Bromination of Indolo[2,3-a]quinolizidine Alkaloids via In Situ-Generated Indoline Intermediate. Chemistry 2024; 30:e202401153. [PMID: 38584124 DOI: 10.1002/chem.202401153] [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: 03/22/2024] [Revised: 04/05/2024] [Accepted: 04/07/2024] [Indexed: 04/09/2024]
Abstract
There are many indole alkaloids that contain diverse functional groups attached to the benzene ring on the indole core. Promising biological activities of these alkaloids have been reported. Herein, we report the indole C5-selective bromination of indolo[2,3-a]quinolizidine alkaloids by adding nearly equimolar amounts of Br3 ⋅ PyH and HCl in MeOH. The resulting reaction plausibly proceeds through an indoline intermediate by the nucleophilic addition of MeOH to the C3-brominated indolenine intermediate. Data support the intermediacy of a C3-, C5-dibrominated indolenine intermediate as a brominating agent. These conditions demonstrate excellent selectivity for indole C5 bromination of natural products and their derivatives. Thus, these simple, mild, and metal-free conditions allow for selective, late-stage bromination followed by further chemical modifications. The utility of the brominated product prepared from naturally occurring yohimbine was demonstrated through various derivatizations, including a bioinspired heterodimerization reaction.
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Affiliation(s)
- Go Yoshimura
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, 260-8675, Chiba, Japan
| | - Jukiya Sakamoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, 260-8675, Chiba, Japan
| | - Mariko Kitajima
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, 260-8675, Chiba, Japan
| | - Hayato Ishikawa
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, 260-8675, Chiba, Japan
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6
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Lin X, Li Y, Xu Z, Yu S, Feng J, Diao A, Yao P, Wu Q, Zhu D. Engineered Imine Reductase for Asymmetric Synthesis of Dextromethorphan Key Intermediate. Org Lett 2024; 26:4463-4468. [PMID: 38747552 DOI: 10.1021/acs.orglett.4c01079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
(S)-1-(4-Methoxybenzyl)-1,2,3,4,5,6,7,8-octahydroisoquinoline ((S)-1-(4-methoxybenzyl)-OHIQ) is the key intermediate of the nonopioid antitussive dextromethorphan. In this study, (S)-IR61-V69Y/P123A/W179G/F182I/L212V (M4) was identified with a 766-fold improvement in catalytic efficiency compared with wide-type IR61 through enzyme engineering. M4 could completely convert 200 mM of 1-(4-methoxybenzyl)-3,4,5,6,7,8-hexahydroisoquinoline into (S)-1-(4-methoxybenzyl)-OHIQ in 77% isolated yield, with >99% enantiomeric excess and a high space-time yield of 542 g L-1 day-1, demonstrating a great potential for the synthesis of dextromethorphan intermediate in industrial applications.
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Affiliation(s)
- Xiaofeng Lin
- School of Biotechnology, Key Lab of Industrial Fermentation Microbiology of the Ministry of Education, State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, National Engineering Research Center of Industrial Enzymes, National Center of Technology Innovation for Synthetic Biology, Tianjin Engineering Research Center of Biocatalytic Technology, and Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Yixuan Li
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, National Engineering Research Center of Industrial Enzymes, National Center of Technology Innovation for Synthetic Biology, Tianjin Engineering Research Center of Biocatalytic Technology, and Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zefei Xu
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, National Engineering Research Center of Industrial Enzymes, National Center of Technology Innovation for Synthetic Biology, Tianjin Engineering Research Center of Biocatalytic Technology, and Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Shanshan Yu
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, National Engineering Research Center of Industrial Enzymes, National Center of Technology Innovation for Synthetic Biology, Tianjin Engineering Research Center of Biocatalytic Technology, and Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinhui Feng
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, National Engineering Research Center of Industrial Enzymes, National Center of Technology Innovation for Synthetic Biology, Tianjin Engineering Research Center of Biocatalytic Technology, and Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Aipo Diao
- School of Biotechnology, Key Lab of Industrial Fermentation Microbiology of the Ministry of Education, State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Peiyuan Yao
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, National Engineering Research Center of Industrial Enzymes, National Center of Technology Innovation for Synthetic Biology, Tianjin Engineering Research Center of Biocatalytic Technology, and Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qiaqing Wu
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, National Engineering Research Center of Industrial Enzymes, National Center of Technology Innovation for Synthetic Biology, Tianjin Engineering Research Center of Biocatalytic Technology, and Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dunming Zhu
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, National Engineering Research Center of Industrial Enzymes, National Center of Technology Innovation for Synthetic Biology, Tianjin Engineering Research Center of Biocatalytic Technology, and Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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7
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Yuan B, Yang D, Qu G, Turner NJ, Sun Z. Biocatalytic reductive aminations with NAD(P)H-dependent enzymes: enzyme discovery, engineering and synthetic applications. Chem Soc Rev 2024; 53:227-262. [PMID: 38059509 DOI: 10.1039/d3cs00391d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Chiral amines are pivotal building blocks for the pharmaceutical industry. Asymmetric reductive amination is one of the most efficient and atom economic methodologies for the synthesis of optically active amines. Among the various strategies available, NAD(P)H-dependent amine dehydrogenases (AmDHs) and imine reductases (IREDs) are robust enzymes that are available from various sources and capable of utilizing a broad range of substrates with high activities and stereoselectivities. AmDHs and IREDs operate via similar mechanisms, both involving a carbinolamine intermediate followed by hydride transfer from the co-factor. In addition, both groups catalyze the formation of primary and secondary amines utilizing both organic and inorganic amine donors. In this review, we discuss advances in developing AmDHs and IREDs as biocatalysts and focus on evolutionary history, substrate scope and applications of the enzymes to provide an outlook on emerging industrial biotechnologies of chiral amine production.
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Affiliation(s)
- Bo Yuan
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China.
- Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
| | - Dameng Yang
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China.
| | - Ge Qu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China.
- Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
| | - Nicholas J Turner
- Department of Chemistry, Manchester Institute of Biotechnology, University of Manchester, Manchester M1 7DN, UK.
| | - Zhoutong Sun
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China.
- Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
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8
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Zhou H, Chuang P, Xu L, Wu Q. Asymmetric Synthesis of Bulky N-Cyclopropylmethyl-1-aryl-1-phenylmethylamines Catalyzed by Engineered Imine Reductases. Org Lett 2023; 25:6688-6692. [PMID: 37671859 DOI: 10.1021/acs.orglett.3c02542] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Enzymatic reduction of diphenylmethanimine derivatives has rarely been reported owing to their steric hindrance. Herein, imine reductase (IRED) from Nocardia cyriacigeorgica rationally engineered with an efficient strategy of focused rational iterative site-specific mutagenesis (FRISM) was selected for the reduction of a series of N-cyclopropylmethyl-1-aryl-1-phenylmethylimines. Two highly enantioselective IRED variants were identified, providing various bulky amine products with moderate to high yields and high ee values (up to >99%). This work provided an effective method to construct these important pharmaceutical intermediates.
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Affiliation(s)
- Haonan Zhou
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310058, P. R. China
| | - Peihsuan Chuang
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310058, P. R. China
| | - Leyan Xu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310058, P. R. China
| | - Qi Wu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310058, P. R. China
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9
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Li Y, Yue X, Li Z, Huang Z, Chen F. Asymmetric Synthesis of Sterically Hindered 1-Substituted Tetrahydro-β-carbolines Enabled by Imine Reductase: Enzyme Discovery, Protein Engineering, and Reaction Development. Org Lett 2023; 25:1285-1289. [PMID: 36802632 DOI: 10.1021/acs.orglett.3c00147] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
We report the discovery of a new imine reductase (IRED), named AtIRED, by genome mining. Site-saturation mutagenesis on AtIRED generated two single mutants M118'L and P120'G and the double mutant M118'L/P120'G with improved specific activity toward sterically hindered 1-substituted dihydro-β-carbolines. The synthetic potential of these engineered IREDs was showcased by the preparative-scale synthesis of nine chiral 1-substituted tetrahydro-β-carbolines (THβCs), including (S)-1-t-butyl-THβC and (S)-1-t-pentyl-THβC, in 30-87% isolated yields with excellent optical purities (98-99% ee).
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Affiliation(s)
- Yitong Li
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, P.R. China
| | - Xiaoping Yue
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, P.R. China
| | - Zhining Li
- Department of Chemistry, Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai Engineering Research Center of Industrial Asymmetric Cataly sis of Chiral Drugs, 220 Handan Road, Shanghai 200433, P.R. China
| | - Zedu Huang
- Department of Chemistry, Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai Engineering Research Center of Industrial Asymmetric Cataly sis of Chiral Drugs, 220 Handan Road, Shanghai 200433, P.R. China
| | - Fener Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, P.R. China.,Department of Chemistry, Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai Engineering Research Center of Industrial Asymmetric Cataly sis of Chiral Drugs, 220 Handan Road, Shanghai 200433, P.R. China
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