1
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Park GM, Kong SJ, Park JH, Kang JE, An SH, Kim HS, Kim IS, Boggu PR, Jung YH. Synthesis and evaluation of ent-Conduramine C-1 derivatives as α-glucosidase inhibitors via CSI-mediated amination reaction. Carbohydr Res 2023; 524:108746. [PMID: 36682231 DOI: 10.1016/j.carres.2023.108746] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 01/12/2023] [Accepted: 01/16/2023] [Indexed: 01/19/2023]
Abstract
Concise synthesis of ent-conduramine C-1 and its derivatives has been achieved by using commercially available d-ribose. The key steps in the synthesis are regioselective and diastereoselective amination of polybenzyl ethers by chlorosulfonyl isocyanate (CSI), chelation-controlled carbonyl addition, and intramolecular olefin metathesis. All of the synthesized compounds were evaluated for inhibitory activity against α-glucosidase. The derivatives 18 (IC50 = 0.65 ± 0.03 mM) and 19 (IC50 = 0.26 ± 0.01 mM) were identified to be more potent than well-known α-glucosidase inhibitor acarbose (IC50 = 1.05 ± 0.17 mM) as a positive control.
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Affiliation(s)
- Gi Min Park
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Sun Ju Kong
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Jae Hyeon Park
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Ji Eun Kang
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Sung Hwan An
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Pulla Reddy Boggu
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea.
| | - Young Hoon Jung
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea.
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2
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Stängle D, Silkenath B, Gehle P, Esser A, Mayer G, Wittmann V. Carba-Sugar Analogs of Glucosamine-6-Phosphate: New Activators for the glmS Riboswitch. Chemistry 2023; 29:e202202378. [PMID: 36326082 PMCID: PMC10099210 DOI: 10.1002/chem.202202378] [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: 07/30/2022] [Indexed: 11/06/2022]
Abstract
Riboswitches are 5'-untranslated mRNA regions mostly found in bacteria. They are promising drug targets to overcome emerging bacterial resistance against commonly used antibiotics. The glmS riboswitch is unique among the family of riboswitches as it is a ribozyme that undergoes self-cleavage upon binding to glucosamine-6-phosphate (GlcN6P). Previously, we showed that carba glucosamine-6-phosphate (carba-GlcN6P) induces self-cleavage of the riboswitch with a potency similar to that of GlcN6P. Here, we report a synthetic approach to a new class of carba-GlcN6P derivatives with an alkoxy substituent in the carba position. Key features of the synthesis are a ring closing metathesis followed by a hydroboration. The strategy gives access to libraries of carba-GlcN6P derivatives. Ribozyme cleavage assays unraveled new activators for the glmS riboswitch from Listeria monocytogenes and Clostridium difficile.
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Affiliation(s)
- David Stängle
- Department of Chemistry, University of Konstanz, Universitätsstraße 10, 78464, Konstanz, Germany
| | - Bjarne Silkenath
- Department of Chemistry, University of Konstanz, Universitätsstraße 10, 78464, Konstanz, Germany
| | - Paul Gehle
- LIMES Institute, Center for Aptamer Research & Development, University of Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
| | - Anna Esser
- LIMES Institute, Center for Aptamer Research & Development, University of Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
| | - Günter Mayer
- LIMES Institute, Center for Aptamer Research & Development, University of Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
| | - Valentin Wittmann
- Department of Chemistry, University of Konstanz, Universitätsstraße 10, 78464, Konstanz, Germany
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3
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Han S. “
K‐synthesis
”: Recent advancements in natural product synthesis enabled by unique methods and strategies development in Korea. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sunkyu Han
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon South Korea
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4
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Cui L, Cui A, Li Q, Yang L, Liu H, Shao W, Feng Y. Molecular Evolution of an Aminotransferase Based on Substrate–Enzyme Binding Energy Analysis for Efficient Valienamine Synthesis. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03784] [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]
Affiliation(s)
- Li Cui
- State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Anqi Cui
- State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Qitong Li
- State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Lezhou Yang
- State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hao Liu
- State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wenguang Shao
- State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yan Feng
- State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
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5
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Salamci E, Zozik Y. Stereoselective syntheses of 3-aminocyclooctanetriols and halocyclooctanetriols. Beilstein J Org Chem 2021; 17:705-710. [PMID: 33777245 PMCID: PMC7961859 DOI: 10.3762/bjoc.17.59] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 02/26/2021] [Indexed: 11/23/2022] Open
Abstract
The efficient synthesis of two new stereoisomeric 3-aminocyclooctanetriols and their new halocyclitol derivatives starting from cis,cis-1,3-cyclooctadiene are reported. Reduction of cyclooctene endoperoxide, obtained by photooxygenation of cis,cis-1,3-cyclooctadiene, with zinc yielded a cyclooctene diol followed by acetylation of the hydroxy group, which gave dioldiacetate by OsO4/NMO oxidation. The cyclooctane dioldiacetate prepared was converted to the corresponding cyclic sulfate via the formation of a cyclic sulfite in the presence of catalytic RuO4. The reaction of this cyclic sulfate with a nucleophilic azide followed by the reduction of the azide group provided the target, 3-aminocyclooctanetriol. The second key compound, bromotriol, was prepared by epoxidation of the cyclooctenediol with m-chloroperbenzoic acid followed by hydrolysis with HBr(g) in methanol. Treatment of bromotriol with NaN3 and the reduction of the azide group yielded the other desired 3-aminocyclooctanetriol. Hydrolysis of the epoxides with HCl(g) in methanol gave stereospecifically new chlorocyclooctanetriols.
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Affiliation(s)
- Emine Salamci
- Department of Chemistry, Faculty of Sciences, Atatürk University, 25240 Erzurum, Turkey
| | - Yunus Zozik
- Department of Chemistry, Faculty of Sciences, Atatürk University, 25240 Erzurum, Turkey
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6
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Stammers M, Ivanova IM, Niewczas IS, Segonds-Pichon A, Streeter M, Spiegel DA, Clark J. Age-related changes in the physical properties, cross-linking, and glycation of collagen from mouse tail tendon. J Biol Chem 2020; 295:10562-10571. [PMID: 32381510 PMCID: PMC7397091 DOI: 10.1074/jbc.ra119.011031] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 05/04/2020] [Indexed: 12/18/2022] Open
Abstract
Collagen is a structural protein whose internal cross-linking critically determines the properties and functions of connective tissue. Knowing how the cross-linking of collagen changes with age is key to understanding why the mechanical properties of tissues change over a lifetime. The current scientific consensus is that collagen cross-linking increases with age and that this increase leads to tendon stiffening. Here, we show that this view should be reconsidered. Using MS-based analyses, we demonstrated that during aging of healthy C57BL/6 mice, the overall levels of collagen cross-linking in tail tendon decreased with age. However, the levels of lysine glycation in collagen, which is not considered a cross-link, increased dramatically with age. We found that in 16-week-old diabetic db/db mice, glycation reaches levels similar to those observed in 98-week-old C57BL/6 mice, while the other cross-links typical of tendon collagen either decreased or remained the same as those observed in 20-week-old WT mice. These results, combined with findings from mechanical testing of tendons from these mice, indicate that overall collagen cross-linking in mouse tendon decreases with age. Our findings also reveal that lysine glycation appears to be an important factor that contributes to tendon stiffening with age and in diabetes.
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Affiliation(s)
| | - Irina M Ivanova
- Babraham Institute, Cambridge, United Kingdom
- John Innes Centre, Norwich, United Kingdom
| | | | | | - Matthew Streeter
- Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - David A Spiegel
- Department of Chemistry, Yale University, New Haven, Connecticut, USA
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7
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Široký M, Gonda J, Martinková M, Jacková D, Vilková M, Bindzár V, Kuchár J, Šesták S. Synthesis and mannosidase inhibitory profile of a small library of aminocyclitols from shikimic acid-derived scaffolds. Carbohydr Res 2020; 493:108027. [DOI: 10.1016/j.carres.2020.108027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 04/28/2020] [Accepted: 04/28/2020] [Indexed: 12/18/2022]
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8
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9
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Cui L, Wei X, Wang X, Bai L, Lin S, Feng Y. A Validamycin Shunt Pathway for Valienamine Synthesis in Engineered Streptomyces hygroscopicus 5008. ACS Synth Biol 2020; 9:294-303. [PMID: 31940432 DOI: 10.1021/acssynbio.9b00319] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Valienamine is the key functional component of many natural glycosidase inhibitors, including the crop protectant validamycin A and the clinical antidiabetic agent acarbose. Due to its important biomedical activity, it is also the prominent lead compound for the exploration of therapeutic agents, such as the stronger α-glucosidase inhibitor voglibose. Currently, the main route for obtaining valienamine is a multistep biosynthetic process involving the synthesis and degradation of validamycin A. Here, we established an alternative, vastly simplified shunt pathway for the direct synthesis of valienamine based on an envisioned non-natural transamination in the validamycin A producer Streptomyces hygroscopicus 5008. We first identified candidate aminotransferases for the non-natural ketone substrate valienone and conducted molecular evolution in vitro. The WecE enzyme from Escherichia coli was verified to complete the envisioned step with >99.9% enantiomeric excess and was further engineered to produce a 32.6-fold more active mutant, VarB, through protein evolution. Subsequently, two copies of VarB were introduced into the host, and the new shunt pathway produced 0.52 mg/L valienamine after a 96-h fermentation. Our study thus illustrates a dramatically simplified alternative shunt pathway for valienamine production and introduces a promising foundational platform for increasing the production of valienamine and its valuable N-modified derivatives for use in pharmaceutical applications.
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Affiliation(s)
- Li Cui
- State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaodong Wei
- State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xinran Wang
- State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Linquan Bai
- State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shuangjun Lin
- State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yan Feng
- State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
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10
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Exploration of Catalytic Selectivity for Aminotransferase (BtrR) Based on Multiple Molecular Dynamics Simulations. Int J Mol Sci 2019; 20:ijms20051188. [PMID: 30857183 PMCID: PMC6429434 DOI: 10.3390/ijms20051188] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/02/2019] [Accepted: 03/05/2019] [Indexed: 01/15/2023] Open
Abstract
The aminotransferase from Bacillus circulans (BtrR), which is involved in the biosynthesis of butirosin, catalyzes the pyridoxal phosphate (PLP)-dependent transamination reaction to convert valienone to β-valienamine (a new β-glycosidase inhibitor for the treatment of lysosomal storage diseases) with an optical purity enantiomeric excess value. To explore the stereoselective mechanism of valienamine generated by BtrR, multiple molecular dynamics (MD) simulations were performed for the BtrR/PLP/valienamine and BtrR/PLP/β-valienamine complexes. The theoretical results showed that β-valienamine could make BtrR more stable and dense than valienamine. β-valienamine could increase the hydrogen bond probability and decrease the binding free energy between coenzyme PLP and BtrR by regulating the protein structure of BtrR, which was conducive to the catalytic reaction. β-valienamine maintained the formation of cation-p interactions between basic and aromatic amino acids in BtrR, thus enhancing its stability and catalytic activity. In addition, CAVER 3.0 analysis revealed that β-valienamine could make the tunnel of BtrR wider and straight, which was propitious to the removal of products from BtrR. Steered MD simulation results showed that valienamine interacted with more residues in the tunnel during dissociation compared with β-valienamine, resulting in the need for a stronger force to be acquired from BtrR. Taken together, BtrR was more inclined to catalyze the substrates to form β-valienamine, either from the point of view of the catalytic reaction or product removal.
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11
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Banachowicz P, Buda S. Gram-scale carbasugar synthesis via intramolecular seleno-Michael/aldol reaction. RSC Adv 2019; 9:12928-12935. [PMID: 35520757 PMCID: PMC9063748 DOI: 10.1039/c9ra02002k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 04/17/2019] [Indexed: 12/04/2022] Open
Abstract
Carbasugars represent an important category of natural products possessing a broad spectrum of biological activities. Lots of effort has been done to develop gram scale synthesis. We are presenting a new approach to gram scale synthesis of the carbasugar skeleton via intramolecular seleno-Michael/aldol reaction. The proposed strategy gave gram amounts of 6-hydroxy shikimic ester in a tandem process in 36% overall yield starting from d-lyxose. We have attempted to demonstrate the synthetic utility of 6-hydroxyshikimic acid derivatives by covering the important synthetic modifications and related applications, namely synthesis of protected (−)-gabosine E, (−)-MK7606, (−)-valienamine and finally unprotected methyl (−)-shikimate. A new approach to gram scale synthesis of carbasugar derivatives via intramolecular seleno-Michael/aldol reaction.![]()
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Affiliation(s)
| | - Szymon Buda
- Faculty of Chemistry
- Jagiellonian University
- 30-387 Krakow
- Poland
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12
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Banachowicz P, Mlynarski J, Buda S. Intramolecular Tandem Seleno-Michael/Aldol Reaction: A Simple Route to Hydroxy Cyclo-1-ene-1-carboxylate Esters. J Org Chem 2018; 83:11269-11277. [PMID: 30081637 DOI: 10.1021/acs.joc.8b01853] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Intramolecular tandem seleno-Michael/aldol reaction followed by an oxidation-elimination process can be an efficient tool for the construction of hydroxy cyclo-1-ene-1-carboxylate esters from oxo-α,β-unsaturated esters. Generation of lithium selenolate from elemental selenium and n-BuLi provides a simple and efficient one-pot access to cyclic endo-Morita-Baylis-Hillman adducts.
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Affiliation(s)
- Piotr Banachowicz
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Krakow , Poland
| | - Jacek Mlynarski
- Institute of Organic Chemistry , Polish Academy of Sciences , Kasprzaka 44/52 , 01-224 Warsaw , Poland
| | - Szymon Buda
- Faculty of Chemistry , Jagiellonian University , Gronostajowa 2 , 30-387 Krakow , Poland
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13
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14
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Total synthesis of (−)-codonopsinine via regioselective and diastereoselective amination using chlorosulfonyl isocyanate. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Li F, Ding W, Quan N, Wu J, He Y, Zhu X, Shi X, Zhao J. Improved Stereoselective Syntheses of (+)-Valiolamine and (+)-Valienamine Starting from (-)-Shikimic Acid. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201600935] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fenglei Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Wei Ding
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Na Quan
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Jiajia Wu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Yungang He
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Xingliang Zhu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Xiaoxin Shi
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Jianhong Zhao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
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16
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Cui L, Guan XQ, Liu ZM, Fan LY, Li Q, Feng Y. A new pre-column derivatization for valienamine and beta-valienamine using o-phthalaldehyde to determine the epimeric purity by HPLC and application of this method to monitor enzymatic catalyzed synthesis of beta-valienamine. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2017; 19:347-357. [PMID: 28367638 DOI: 10.1080/10286020.2017.1292257] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 02/03/2017] [Indexed: 06/07/2023]
Abstract
Valienamine and β-valienamine are representative C7 N aminocyclitols with significant glycosidase inhibition activity that have been developed as important precursors of drugs for diabetes and lysosomal storage diseases, respectively. The quantitative analysis of these chiral compounds is crucial for asymmetric in vitro biosynthetic processes for converting valienone into valienamine epimers using aminotransferase. Here, we developed an efficient and sensitive method for separation and quantitative analysis of chiral valienamine using reversed-phase high-performance liquid chromatography (HPLC) through o-phthalaldehyde (OPA) pre-column derivatization of the analytes. The epimers were derivatized by OPA in borate buffer (pH 9.0) at room temperature for 30 s, separated on an Eclipse XDB-C18 (5 μm, 4.6 × 150 mm) column, eluted with 22% acetonitrile at 30 °C for 18 min, and detected by a fluorescence detector using 445 nm emission and 340 nm excitation wavelengths. The average resolution of the epimers is 3.86, and the concentration linearity is in the range of 0.02-20 μg/ml. The method proved to be effective, sensitive, and reliable with good intra- and inter-day precision and accuracy, and successfully evaluated the enantiopreference and catalytic capability of the potential aminotransferases on an unnatural prochiral substrate, facilitating the design of an asymmetric biosynthetic route for optically pure valienamine and β-valienamine.
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Affiliation(s)
- Li Cui
- a State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Xiao-Qing Guan
- a State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Zhang-Min Liu
- a State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Liu-Yin Fan
- a State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Qian Li
- b School of Life Science & Technology , China Pharmaceutical University , Nanjing 210009 , China
| | - Yan Feng
- a State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences , Shanghai Jiao Tong University , Shanghai 200240 , China
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17
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Ravi A, Hassan SZ, Vanikrishna AN, Sureshan KM. Regioselective SN2 reactions for rapid syntheses of azido-inositols by one-pot sequence-specific nucleophilysis. Chem Commun (Camb) 2017; 53:3971-3973. [DOI: 10.1039/c7cc01219e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Sequential nucleophilysis of myo-inositol-disulfonate provides easy access to azido-inositols.
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Affiliation(s)
- Arthi Ravi
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram
- Thiruvananthapuram-695016
- India
| | - Syed Zahid Hassan
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram
- Thiruvananthapuram-695016
- India
| | - Ajithkumar N. Vanikrishna
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram
- Thiruvananthapuram-695016
- India
| | - Kana M. Sureshan
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram
- Thiruvananthapuram-695016
- India
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18
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Chun JS, Hong SM, Jeon TH, Park SJ, Son HP, Jung JM, Choi YJ, Kim IS, Jung YH. Divergent total synthesis of d-ribo-phytosphingosine and l-ribo-phytosphingosine from d-ribose. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.11.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Cui L, Zhu Y, Guan X, Deng Z, Bai L, Feng Y. De Novo Biosynthesis of β-Valienamine in Engineered Streptomyces hygroscopicus 5008. ACS Synth Biol 2016; 5:15-20. [PMID: 26436873 DOI: 10.1021/acssynbio.5b00138] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The C7N aminocyclitol β-valienamine is a lead compound for the development of new biologically active β-glycosidase inhibitors as chemical chaperone therapeutic agents for lysosomal storage diseases. Its chemical synthesis is challenging due to the presence of multichiral centers in the structure. Herein, we took advantage of a heterogeneous aminotransferase with stereospecificity and designed a novel pathway for producing β-valienamine in Streptomyces hygroscopicus 5008, a validamycin producer. The aminotransferase BtrR from Bacillus circulans was able to convert valienone to β-valienamine with an optical purity of up to >99.9% enantiomeric excess value in vitro. When the aminotransferase gene was introduced into a mutant of S. hygroscopicus 5008 accumulating valienone, 20 mg/L of β-valienamine was produced after 96 h cultivation in shaking flasks. This work provides a powerful alternative for preparing the chiral intermediates for pharmaceutical development.
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Affiliation(s)
- Li Cui
- State Key Laboratory of Microbial Metabolism, School of Life Sciences & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ying Zhu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaoqing Guan
- State Key Laboratory of Microbial Metabolism, School of Life Sciences & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zixin Deng
- State Key Laboratory of Microbial Metabolism, School of Life Sciences & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Linquan Bai
- State Key Laboratory of Microbial Metabolism, School of Life Sciences & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yan Feng
- State Key Laboratory of Microbial Metabolism, School of Life Sciences & Biotechnology, and Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
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Stereoselective synthesis of (+)-valienamine starting from the naturally abundant (−)-shikimic acid. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.07.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2013. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.09.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Synthesis of branched carbasugars via photooxygenation and manganese(III) acetate free radical cyclization. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.069] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Mondal S, Sureshan KM. Total syntheses and structural validation of lincitol A, lincitol B, uvacalol I, uvacalol J, and uvacalol K. Org Biomol Chem 2014; 12:7279-89. [DOI: 10.1039/c4ob01329h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
First total syntheses of lincitol A, lincitol B, uvacalol I, uvacalol J and uvacalol K were achieved in racemic form, validating their structure from a common intermediate, which was synthesized in six steps from low-cost and extensively available myo-inositol.
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Affiliation(s)
- Soumik Mondal
- School of Chemistry
- Indian Institute of Science Education and Research
- Thiruvananthapuram 695016, India
| | - Kana M. Sureshan
- School of Chemistry
- Indian Institute of Science Education and Research
- Thiruvananthapuram 695016, India
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