1
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Chand HR, Tiwari MK, Bhattacharya AK. Glycal mediated synthesis of piperidine alkaloids: fagomine, 4- epi-fagomine, 2-deoxynojirimycin, and an advanced intermediate, iminoglycal. RSC Adv 2022; 12:33021-33031. [PMID: 36425185 PMCID: PMC9670682 DOI: 10.1039/d2ra05224e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 10/26/2022] [Indexed: 12/09/2023] Open
Abstract
Glucal and galactal are transformed into 2-deoxyglycolactams, which are important building blocks in the synthesis of biologically active piperidine alkaloids, fagomine and 4-epi-fagomine. In one of the strategies, reduction of 2-deoxyglycolactam-N-Boc carbonyl by lithium triethylborohydride (Super-Hydride®) has been exploited to generate lactamol whereas reduction followed by dehydration was utilized as the other strategy to functionalize the C1-C2 bond in the iminosugar substrate. The strategies provide the formal synthesis of 2-deoxynojirimycin, nojirimycin and nojirimycin B. DFT studies were carried out to determine the reason for the failure of the formation of the 2-deoxygalactonojirimycin derivative. Further, DFT studies suggest that phenyl moieties of protecting groups and lone pairs of oxygen in carbamate group plays a vital role in deciphering the conformational space of the reaction intermediates and transition-state structures through cation-π or cation-lone pair interactions. The influence of these interactions is more pronounced at low temperature when the entropy factor is small.
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Affiliation(s)
- Hemender R Chand
- Division of Organic Chemistry, CSIR-National Chemical Laboratory Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Mritunjay K Tiwari
- Physical and Material Chemistry Division, CSIR-National Chemical Laboratory Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Asish K Bhattacharya
- Division of Organic Chemistry, CSIR-National Chemical Laboratory Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad India
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2
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Deng L, Song C, Niu Y, Li Q, Wang M, Wu YF, Ye XS. Synthesis and biological evaluation of bergenin derivatives as new immunosuppressants. RSC Med Chem 2021; 12:1968-1976. [PMID: 34825192 DOI: 10.1039/d1md00210d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 08/22/2021] [Indexed: 11/21/2022] Open
Abstract
Bergenin, which is isolated from Bergenia species, exhibits various pharmacological properties. In the search for new types of immunosuppressants, a series of bergenin derivatives were designed and synthesized, and their immunosuppressive effects were evaluated by the CCK-8 assay. The experimental data demonstrated that compounds 7 and 13 showed the strongest inhibition effects on mouse splenocyte proliferation (IC50 = 3.52 and 5.39 μM, respectively). Further studies revealed that the inhibitory effect may come from the suppression of both IFN-γ and IL-4 cytokines. Alkylated derivatives of bergenin with n-hexyl and n-heptyl on the two phenolic hydroxyl groups showed better inhibitory activities. The hydrophobicity of bergenin derivatives, the configuration of the 4-OH in bergenin, and the ability to form hydrogen bonds of the substituents on the C-4 position are important to the immunosuppressive activity. This work proved that the modifications of bergenin may represent a new route to the discovery of a new class of immunosuppressive agents.
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Affiliation(s)
- Lihua Deng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China
| | - Chengcheng Song
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China .,Engineering Research Center of Glycoconjugates, Ministry of Education, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University Changchun 130024 China
| | - Youhong Niu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China
| | - Meng Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China
| | - Yan-Fen Wu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China
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3
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Thangarasu AK, Sambyal S, Kumar HMS, Lankalapalli RS. Design, synthesis, and preliminary immunopotentiating activity of new analogues of nojirimycin. Carbohydr Res 2021; 511:108479. [PMID: 34798489 DOI: 10.1016/j.carres.2021.108479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 11/11/2021] [Accepted: 11/11/2021] [Indexed: 11/16/2022]
Abstract
Three new classes of nojirimycin analogues viz. N-alkyl with C1-substituent (4-phenylbutyl), N-substituted 1-deoxynojirimycin and its congener δ-lactam, and a 4-phenylbutyl-β-C-glycoside were designed and synthesized for immunological studies. The resulting diverse compound library exhibited proliferation of B Cells and T cells induced by LPS and Con A, respectively. The majority of the analogues augmented the secretion of IL-12 in dendritic cells and TNF-α secretion in murine peritoneal macrophages compared to LPS (10 μg/ml). A deoxynojirimycin-triazole conjugate of phytosphingosine analogue was superior in the responses mentioned above and exhibited nitric oxide response equal to LPS. In comparison to findings on its congeners with immunosuppressive action, early immunological tests show that the novel nojirimycin analogues have immunopotentiating effect. Hence, nojirimycin analogues offer tremendous potential in tuning the immunomodulatory activity of iminosugars by subtle to substantial structural variations.
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Affiliation(s)
- Arun K Thangarasu
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shainy Sambyal
- Vaccine Immunology Laboratory, Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, 500007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Halmuthur Mahabalarao Sampath Kumar
- Vaccine Immunology Laboratory, Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, 500007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ravi S Lankalapalli
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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4
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Wood A, Prichard KL, Clarke Z, Houston TA, Fleet GWJ, Simone MI. Synthetic Pathways to 3,4,5-Trihydroxypiperidines from the Chiral Pool. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800943] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Adam Wood
- Discipline of Chemistry; University of Newcastle; 2308 Callaghan NSW Australia
- Priority Research Centre for Chemical Biology & Clinical Pharmacology; University of Newcastle; 2308 Callaghan NSW Australia
| | - Kate L. Prichard
- Discipline of Chemistry; University of Newcastle; 2308 Callaghan NSW Australia
- Priority Research Centre for Chemical Biology & Clinical Pharmacology; University of Newcastle; 2308 Callaghan NSW Australia
| | - Zane Clarke
- Discipline of Chemistry; University of Newcastle; 2308 Callaghan NSW Australia
- Priority Research Centre for Chemical Biology & Clinical Pharmacology; University of Newcastle; 2308 Callaghan NSW Australia
- Department of Chemistry; Juniata College; PA16652-2196 Huntingdon Pennsylvania USA
| | - Todd A. Houston
- Institute for Glycomics; Griffith University (Gold Coast); 4215 Southport QLD Australia
| | | | - Michela I. Simone
- Discipline of Chemistry; University of Newcastle; 2308 Callaghan NSW Australia
- Priority Research Centre for Chemical Biology & Clinical Pharmacology; University of Newcastle; 2308 Callaghan NSW Australia
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5
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Lv Z, Song C, Niu Y, Li Q, Ye XS. Synthesis of N-Substituted Iminosugar Derivatives and Evaluation of Their Immunosuppressive Activities. ChemMedChem 2018; 13:338-351. [PMID: 29323471 DOI: 10.1002/cmdc.201700706] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/24/2017] [Indexed: 01/28/2023]
Abstract
It is important to find more effective and safer immunosuppressants, because clinically used immunosuppressive agents have significant side effects. A series of N-substituted iminosugar derivatives were designed and synthesized, and their immunosuppressive effects were evaluated by the CCK-8 assay. The results revealed that iminosugars 10 e and 10 i, that is, (3R,4S)-1-(4-heptyloxylphenylethyl)pyrrolidine-3,4-diol and (3R,4S)-1-[2-(2-chloro-4-(p-tolylthio)-phenyl-1-yl)ethyl]pyrrolidine-3,4-diol, respectively, exhibited the strongest inhibitory effects on mouse splenocyte proliferation (IC50 =2.16 and 2.48 μm, respectively), whereas the iminosugars containing an amide group near the hydrophilic head (compounds 10 j-n) exhibited no inhibitory effects. Further studies revealed that the inhibitory effects on splenocyte proliferation may have come from the suppression of both IFN-γ and IL-4 cytokines. Our results suggest that synthetic iminosugars, especially compounds 10 e and 10 i, hold potential as immunosuppressive agents.
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Affiliation(s)
- Zhuo Lv
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Chengcheng Song
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Youhong Niu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
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6
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Liu HQ, Song CC, Niu YH, Li T, Li Q, Ye XS. Synthesis and biological evaluation of N-arylated-lactam-type iminosugars as potential immunosuppressive agents. Org Biomol Chem 2017; 15:5912-5919. [PMID: 28670651 DOI: 10.1039/c7ob01110e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Since the immunosuppressive agents currently used in clinics have significant side effects, it is very important to search for new effective and safe immunosuppressants. Iminosugars as a new class of immunosuppressants are less explored. In this report, 24 new N-arylated iminosugar derivatives, including d-talo and d-galacto epimers, were designed and synthesized, and their immunosuppressive effects were evaluated by MTT assay. The experimental data demonstrated that compound 20 showed the strongest inhibition effect (IC50 = 6.94 μM). Further studies revealed that the inhibitory effects on splenocyte proliferation may come from the suppression of both IFN-γ and IL-4 cytokines. The preliminary structure-activity relationship (SAR) analysis suggested that N-arylated d-galacto-type iminosugars showed better inhibitory activities than d-talo-type analogues. The SAR analysis also showed that the inhibition effect of iminosugars can be improved by decreasing the polarity or increasing the hydrophobicity. These results may be beneficial to the discovery of new iminosugar derivatives as immunosuppressive agents.
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Affiliation(s)
- Hai-Qian Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
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7
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Ordóñez M, Cativiela C, Romero-Estudillo I. An update on the stereoselective synthesis of γ-amino acids. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.08.011] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Tang S, Xiong DC, Jiang S, Ye XS. Nitro-polyols via Pyridine Promoted C═C Cleavage of 2-Nitroglycals. Application to the Synthesis of (−)-Hyacinthacine A1. Org Lett 2016; 18:568-71. [DOI: 10.1021/acs.orglett.5b03607] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Shengbiao Tang
- School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, China
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - De-Cai Xiong
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Shende Jiang
- School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, China
| | - Xin-Shan Ye
- State
Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical
Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
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9
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Yang X, Xiong DC, Song C, Tai G, Ye XS. Synthesis of N-dialkylphosphoryl iminosugar derivatives and their immunosuppressive activities. Org Biomol Chem 2015; 13:9364-8. [PMID: 26288991 DOI: 10.1039/c5ob01278c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Twelve novel N-dialkylphosphoryliminosugar derivatives were synthesized and their immunosuppressive activities were evaluated on the proliferation of the mouse splenocytes and the secretion of IFN-γ and IL-4. The experimental data demonstrated that the iminosugars with the double long alkyl chains exhibited better inhibitory effects than those with the single long alkyl chain, and the iminosugars with the 10-carbon linear alkyl chain exhibited the strongest immunosuppressive activities. The assay of the cytokine secretion showed that the introduction of dialkyl chains on iminosugars could regulate the polarization of immune inhibition by varying the length of the alkyl chains. The disclosure of the structure-activity relationships may benefit the structural modifications of iminosugars to find new types of immunosuppressive agents.
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Affiliation(s)
- Xuemei Yang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
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10
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Li Q, Ye XS. Iminosugars as Immunomodulating Agents: Synthesis and Biological Activities of 1-Deoxynojirimycin and Related Compounds. Isr J Chem 2015. [DOI: 10.1002/ijch.201400150] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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11
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Petakamsetty R, Jain VK, Majhi PK, Ramapanicker R. Divergent synthesis of various iminocyclitols from d-ribose. Org Biomol Chem 2015; 13:8512-23. [DOI: 10.1039/c5ob01042j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A very efficient route to the diastereoselective synthesis of polyhydroxy pyrrolidines, piperidines and azepanes from an aldehyde derivative of ribose is reported.
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Affiliation(s)
- Ramu Petakamsetty
- Department of Chemistry and Center for Environmental Science and Engineering
- Indian Institute of Technology Kanpur
- Kanpur
- India
| | - Vipin Kumar Jain
- Department of Chemistry and Center for Environmental Science and Engineering
- Indian Institute of Technology Kanpur
- Kanpur
- India
| | - Pankaj Kumar Majhi
- Department of Chemistry and Center for Environmental Science and Engineering
- Indian Institute of Technology Kanpur
- Kanpur
- India
| | - Ramesh Ramapanicker
- Department of Chemistry and Center for Environmental Science and Engineering
- Indian Institute of Technology Kanpur
- Kanpur
- India
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12
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Wu X, Zhang FY, Zhu J, Song C, Xiong DC, Zhou Y, Cui Y, Ye XS. N-Arylated-Lactam-Type Iminosugars as New Immunosuppressive Agents: Discovery, Optimization, and Biological Evaluation. Chem Asian J 2014; 9:2260-71. [DOI: 10.1002/asia.201400023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Indexed: 11/11/2022]
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13
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Biela-Banaś A, Gallienne E, Front S, Martin OR. Stereoselective synthesis of 1-C-alkyl iminogalactitol derivatives, potential chaperones for galactosidase-linked LSDs: a real challenge. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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