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Herrera-González I, González-Cuesta M, García-Moreno MI, García Fernández JM, Ortiz Mellet C. Stereoselective Synthesis of Nojirimycin α- C-Glycosides from a Bicyclic Acyliminium Intermediate: A Convenient Entry to N, C-Biantennary Glycomimetics. ACS OMEGA 2022; 7:22394-22405. [PMID: 35811898 PMCID: PMC9260894 DOI: 10.1021/acsomega.2c01469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 04/06/2022] [Indexed: 06/15/2023]
Abstract
A simple and efficient method for the stereoselective synthesis of nojirimycin α-C-glycoside derivatives has been developed using a bicyclic carbamate-type sp2-iminosugar, whose preparation on a gram scale has been optimized, as the starting material. sp2-iminosugar O-glycosides or anomeric esters serve as excellent precursors of acyliminium cations, which can add nucleophiles, including C-nucleophiles. The stereochemical outcome of the reaction is governed by stereoelectronic effects, affording the target α-anomer with total stereoselectivity. Thus, the judicious combination of C-allylation, carbamate hydrolysis, cross-metathesis, and hydrogenation reactions provides a very convenient entry to iminosugar α-C-glycosides, which have been transformed into N,C-biantennary derivatives by reductive amination or thiourea-forming reactions. The thiourea adducts undergo intramolecular cyclization to bicyclic iminooxazolidine iminosugar α-C-glycosides upon acid treatment, broadening the opportunities for molecular diversity. A preliminary evaluation against a panel of commercial glycosidases validates the approach for finely tuning the inhibitory profile of glycomimetics.
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Affiliation(s)
- Irene Herrera-González
- Department
of Organic Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Sevilla, Spain
| | - Manuel González-Cuesta
- Department
of Organic Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Sevilla, Spain
| | - M. Isabel García-Moreno
- Department
of Organic Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Sevilla, Spain
| | - José Manuel García Fernández
- Instituto
de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, C/Américo Vespucio 49,
Isla de la Cartuja, 41092 Sevilla, Spain
| | - Carmen Ortiz Mellet
- Department
of Organic Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Sevilla, Spain
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2
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De Masi R, Orlando S. GANAB and N-Glycans Substrates Are Relevant in Human Physiology, Polycystic Pathology and Multiple Sclerosis: A Review. Int J Mol Sci 2022; 23:7373. [PMID: 35806376 PMCID: PMC9266668 DOI: 10.3390/ijms23137373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/22/2022] [Accepted: 06/28/2022] [Indexed: 11/29/2022] Open
Abstract
Glycans are one of the four fundamental macromolecular components of living matter, and they are highly regulated in the cell. Their functions are metabolic, structural and modulatory. In particular, ER resident N-glycans participate with the Glc3Man9GlcNAc2 highly conserved sequence, in protein folding process, where the physiological balance between glycosylation/deglycosylation on the innermost glucose residue takes place, according GANAB/UGGT concentration ratio. However, under abnormal conditions, the cell adapts to the glucose availability by adopting an aerobic or anaerobic regimen of glycolysis, or to external stimuli through internal or external recognition patterns, so it responds to pathogenic noxa with unfolded protein response (UPR). UPR can affect Multiple Sclerosis (MS) and several neurological and metabolic diseases via the BiP stress sensor, resulting in ATF6, PERK and IRE1 activation. Furthermore, the abnormal GANAB expression has been observed in MS, systemic lupus erythematous, male germinal epithelium and predisposed highly replicating cells of the kidney tubules and bile ducts. The latter is the case of Polycystic Liver Disease (PCLD) and Polycystic Kidney Disease (PCKD), where genetically induced GANAB loss affects polycystin-1 (PC1) and polycystin-2 (PC2), resulting in altered protein quality control and cyst formation phenomenon. Our topics resume the role of glycans in cell physiology, highlighting the N-glycans one, as a substrate of GANAB, which is an emerging key molecule in MS and other human pathologies.
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Affiliation(s)
- Roberto De Masi
- Complex Operative Unit of Neurology, “F. Ferrari” Hospital, Casarano, 73042 Lecce, Italy;
- Laboratory of Neuroproteomics, Multiple Sclerosis Centre, “F. Ferrari” Hospital, Casarano, 73042 Lecce, Italy
| | - Stefania Orlando
- Laboratory of Neuroproteomics, Multiple Sclerosis Centre, “F. Ferrari” Hospital, Casarano, 73042 Lecce, Italy
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3
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Padhy RK, Sahu S. Oxidation of iminodiethanol by Ce (IV) in microheterogeneous system: a comprehensive kinetic analysis. J DISPER SCI TECHNOL 2022. [DOI: 10.1080/01932691.2022.2026783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ranjan Kumar Padhy
- Department of Chemistry, National Institute of Science & Technology, Golanthara, Berhampur, Orissa, India
| | - Sarita Sahu
- Department of Chemistry, National Institute of Science & Technology, Golanthara, Berhampur, Orissa, India
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4
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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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5
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Dhara D, Dhara A, Bennett J, Murphy PV. Cyclisations and Strategies for Stereoselective Synthesis of Piperidine Iminosugars. CHEM REC 2021; 21:2958-2979. [PMID: 34713557 DOI: 10.1002/tcr.202100221] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/07/2021] [Accepted: 10/11/2021] [Indexed: 12/31/2022]
Abstract
This personal account focuses on synthesis of polyhydroxylated piperidines, a subset of compounds within the iminosugar family. Cyclisations to form the piperidine ring include reductive amination, substitution via amines, iminium ions and cyclic nitrones, transamidification (N-acyl transfer), addition to alkenes, ring contraction and expansion, photoinduced electron transfer, multicomponent Ugi reaction and ring closing metathesis. Enantiomerically pure piperidines are obtained from chiral pool precursors (e. g. sugars, amino acids, Garner's aldehyde) or asymmetric reactions (e. g. epoxidation, dihydroxylation, aminohydroxylation, aldol, biotransformation). Our laboratory have contributed cascades based on reductive amination from glycosyl azide precursors as well as Huisgen azide-alkene cycloaddition. The latter's combination with allylic azide rearrangement has given substituted piperidines, including those with quaternary centres adjacent to nitrogen.
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Affiliation(s)
- Debashis Dhara
- School of Biological and Chemical Sciences, NUI Galway, University Road, Galway, H91 TK33, Ireland.,Unité de Chimie des Biomolécules, UMR 3523 CNRS, Institut Pasteur, Université de Paris, 28 rue du Dr Roux, 75015, Paris, France
| | - Ashis Dhara
- School of Biological and Chemical Sciences, NUI Galway, University Road, Galway, H91 TK33, Ireland
| | - Jack Bennett
- School of Biological and Chemical Sciences, NUI Galway, University Road, Galway, H91 TK33, Ireland
| | - Paul V Murphy
- School of Biological and Chemical Sciences, NUI Galway, University Road, Galway, H91 TK33, Ireland.,SSPC - The Science Foundation Ireland Research Centre for Pharmaceuticals, NUI Galway, University Road, Galway, H91 TK33, Ireland
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6
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Lu TT, Shimadate Y, Cheng B, Kanekiyo U, Kato A, Wang JZ, Li YX, Jia YM, Fleet GWJ, Yu CY. Synthesis and glycosidase inhibition of 5-C-alkyl-DNJ and 5-C-alkyl-l-ido-DNJ derivatives. Eur J Med Chem 2021; 224:113716. [PMID: 34340042 DOI: 10.1016/j.ejmech.2021.113716] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/18/2021] [Accepted: 07/19/2021] [Indexed: 11/26/2022]
Abstract
5-C-Alkyl-DNJ and 5-C-alkyl-l-ido-DNJ derivatives have been designed and synthesized efficiently from an l-sorbose-derived cyclic nitrone. The DNJ and l-ido-DNJ derivatives with C-5 alkyl chains ranging from methyl to dodecyl were assayed against various glycosidases to study the effect of chain length on enzyme inhibition. Glycosidase inhibition study of DNJ derivatives showed potent and selective inhibitions of α-glucosidase; DNJ derivatives with methyl, pentyl to octyl, undecyl and dodecyl as C-5 branched chains showed significantly improved rat intestinal maltase inhibition. In contrast, most 5-C-alkyl-l-ido-DNJ derivatives were weak or moderate inhibitors of the enzymes tested, with only three compounds found to be potent α-glucosidase inhibitors. Docking studies showed different interaction modes of 5-C-ethyl-DNJ and 5-C-octyl-DNJ with ntMGAM and also different binding modes of 5-C-alkyl-DNJ and 5-C-alkyl-l-ido-DNJ derivatives; the importance of the degree of accommodation of the C-5 substituent in the hydrophobic groove and pocket may account for the variation of glycosidase inhibition in the two series of derivatives. The results reported herein are helpful in the design and development of α-glucosidase inhibitors; this may lead to novel agents for the treatment of viral infection and type II diabetes.
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Affiliation(s)
- Tian-Tian Lu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuna Shimadate
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Bin Cheng
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Uta Kanekiyo
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Atsushi Kato
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
| | - Jun-Zhe Wang
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yi-Xian Li
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Yue-Mei Jia
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - George W J Fleet
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX13TA, UK; National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
| | - Chu-Yi Yu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China; National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China.
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7
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Parmar K, Haghshenas P, Gravel M. Total Synthesis of (+)-Hyacinthacine A 1 Using a Chemoselective Cross-Benzoin Reaction and a Furan Photooxygenation-Amine Cyclization Strategy. Org Lett 2021; 23:1416-1421. [PMID: 33538602 DOI: 10.1021/acs.orglett.1c00090] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We report the shortest synthesis of glycosidase inhibitor (+)-hyacinthacine A1 using a highly chemoselective N-heterocyclic carbene-catalyzed cross-benzoin reaction as well as a furan photooxygenation-amine cyclization strategy. This is the first such cyclization on a furylic alcohol, an unprecedented reaction due to the notorious instability of the formed intermediates. The photooxygenation strategy was eventually incorporated into a three-step one-pot process that formed the requisite pyrrolizidine framework of (+)-hyacinthacine A1.
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Affiliation(s)
- Karnjit Parmar
- Department of Chemistry, University of Saskatchewan, Saskatoon, SK, Canada S7N 5C9
| | - Pouyan Haghshenas
- Department of Chemistry, University of Saskatchewan, Saskatoon, SK, Canada S7N 5C9
| | - Michel Gravel
- Department of Chemistry, University of Saskatchewan, Saskatoon, SK, Canada S7N 5C9
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8
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Synthesis and Therapeutic Applications of Iminosugars in Cystic Fibrosis. Int J Mol Sci 2020; 21:ijms21093353. [PMID: 32397443 PMCID: PMC7247015 DOI: 10.3390/ijms21093353] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/06/2020] [Accepted: 05/06/2020] [Indexed: 12/13/2022] Open
Abstract
Iminosugars are sugar analogues endowed with a high pharmacological potential. The wide range of biological activities exhibited by these glycomimetics associated with their excellent drug profile make them attractive therapeutic candidates for several medical interventions. The ability of iminosugars to act as inhibitors or enhancers of carbohydrate-processing enzymes suggests their potential use as therapeutics for the treatment of cystic fibrosis (CF). Herein we review the most relevant advances in the field, paying attention to both the chemical synthesis of the iminosugars and their biological evaluations, resulting from in vitro and in vivo assays. Starting from the example of the marketed drug NBDNJ (N-butyl deoxynojirimycin), a variety of iminosugars have exhibited the capacity to rescue the trafficking of F508del-CFTR (deletion of F508 residue in the CF transmembrane conductance regulator), either alone or in combination with other correctors. Interesting results have also been obtained when iminosugars were considered as anti-inflammatory agents in CF lung disease. The data herein reported demonstrate that iminosugars hold considerable potential to be applied for both therapeutic purposes.
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9
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A Route to 1-Deoxynojirimycin and 1-Deoxymannojirimycin Derivatives with Quaternary Centers Adjacent to the Ring Nitrogen from Methyl α-d
-Mannopyranoside. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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11
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Design, properties and applications of fluorinated and fluoroalkylated N-containing monosaccharides and their analogues. J Fluor Chem 2019. [DOI: 10.1016/j.jfluchem.2019.109364] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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12
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Bhuma N, Burade SS, Louat T, Herman J, Kawade S, Doshi PJ, Dhavale DD. Fluorinated piperidine iminosugars and their N -alkylated derivatives: Synthesis, conformational analysis, immunosuppressive and glycosidase inhibitory activity studies. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.12.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Prasad SS, Baskaran S. Iminosugar C-Nitromethyl Glycoside: Stereoselective Synthesis of Isoxazoline and Isoxazole-Fused Bicyclic Iminosugars. J Org Chem 2018; 83:1558-1564. [PMID: 29313687 DOI: 10.1021/acs.joc.7b02803] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple and efficient method for the stereoselective synthesis of isoxazoline/isoxazole-fused iminosugar derivatives has been developed using intramolecular nitrile oxide cycloaddition (INOC) as a key step. Iminosugar C-nitromethyl glycosides, derived from simple carbohydrates, served as excellent nitrile oxide precursors in 1,3-dipolar cycloaddition reactions. N-Alkenyl iminosugar C-nitromethyl glycosides afforded novel isoxazoline-fused indolizidine-, pyrrolizidine-, and quinolizidine-based iminosugars in excellent yields with a high degree of stereoselectivity, whereas N-alkynyl iminosugar C-nitromethyl glycosides furnished the corresponding isoxazole containing tricyclic iminosugars in very good yields.
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Affiliation(s)
- Sure Siva Prasad
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, India
| | - Sundarababu Baskaran
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, India
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14
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Prasad SS, Senthilkumar S, Srivastava A, Baskaran S. Iminosugar C-Nitromethyl Glycosides and Divergent Synthesis of Bicyclic Iminosugars. Org Lett 2017; 19:4403-4406. [DOI: 10.1021/acs.orglett.7b02175] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sure Siva Prasad
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | | | - Akriti Srivastava
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Sundarababu Baskaran
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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15
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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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17
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Masdeu G, Pérez-Trujillo M, López-Santín J, Álvaro G. Chloroperoxidase-catalyzed amino alcohol oxidation: Substrate specificity and novel strategy for the synthesis of N -Cbz-3-aminopropanal. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.05.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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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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19
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Zhao K, Zhou G, Nie H, Chen W. Three-step synthesis of l-ido-1-deoxynojirimycin derivatives by reductive amination in water, “borrowing hydrogen” under neat conditions and deprotection. Org Biomol Chem 2016; 14:9466-9471. [DOI: 10.1039/c6ob01864e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A three-step synthesis of l-ido-1-deoxynojirimycin derivatives, starting from readily available 2,3,4,6-tetra-O-benzyl-d-glucopyranose via Ir-catalyzed reductive amination in water, “borrowing hydrogen” under neat conditions, and Pd-catalyzed debenzylation, is reported.
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Affiliation(s)
- Kai Zhao
- School of Pharmacy
- Fourth Military Medical University
- Xian
- P. R. China
| | - Gang Zhou
- School of Pharmacy
- Fourth Military Medical University
- Xian
- P. R. China
| | - Huifang Nie
- School of Pharmacy
- Fourth Military Medical University
- Xian
- P. R. China
| | - Weiping Chen
- School of Pharmacy
- Fourth Military Medical University
- Xian
- P. R. China
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20
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Malinowski M, Rowicki T, Guzik P, Gryszel M, Łapczyński S, Wielechowska M, Czerwińska K, Madura I, Sas W. [1,4]-sigmatropic rearrangement of chiral nitrones and their utilization in the synthesis of new iminosugars. Org Biomol Chem 2016; 14:470-482. [DOI: 10.1039/c5ob01432h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A new mechanism of nitrone epimerization via [1,4]-sigmatropic rearrangement was proposed and a set of epimeric iminosugars was synthesized.
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Affiliation(s)
- Maciej Malinowski
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
| | - Tomasz Rowicki
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
| | - Patrycja Guzik
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
| | - Maciej Gryszel
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
| | | | | | | | - Izabela Madura
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
| | - Wojciech Sas
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
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21
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Pawar NJ, Parihar VS, Khan A, Joshi R, Dhavale DD. Quaternary Indolizidine and Indolizidone Iminosugars as Potential Immunostimulating and Glycosidase Inhibitory Agents: Synthesis, Conformational Analysis, Biological Activity, and Molecular Docking Study. J Med Chem 2015; 58:7820-32. [DOI: 10.1021/acs.jmedchem.5b00951] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nitin J. Pawar
- Department
of Chemistry, Garware Research Centre, Savitribai Phule Pune University (formerly University
of Pune), Pune 411 007, India
| | - Vijay Singh Parihar
- Department
of Chemistry, Garware Research Centre, Savitribai Phule Pune University (formerly University
of Pune), Pune 411 007, India
| | - Ayesha Khan
- Department
of Chemistry, Savitribai Phule Pune University, Pune 411 007, India
| | - Rakesh Joshi
- Institute
of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Pune 411 007, India
| | - Dilip D. Dhavale
- Department
of Chemistry, Garware Research Centre, Savitribai Phule Pune University (formerly University
of Pune), Pune 411 007, India
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22
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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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