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Yu B, Wang S. Solving the Structural Puzzles of Amipurimycin and Miharamycins Enabled by Stereodivergent Total Synthesis. CHEM REC 2021; 21:3015-3028. [PMID: 33835677 DOI: 10.1002/tcr.202100057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/30/2021] [Accepted: 03/30/2021] [Indexed: 11/09/2022]
Abstract
The efforts toward the synthesis of amipurimycin and miharamycin A/B, two peptidyl nucleoside antibiotics bearing a unique nine carbon C3-branched pyranosyl amino acid core, are accounted. Highlighted is our stereodivergent total synthesis of all the possible diastereoisomers of amipurimycin, which has enabled us to solve the structural puzzles of amipurimycin and miharamycin A/B after ∼50 years of their discovery.
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Affiliation(s)
- Biao Yu
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou, 310024, China.,State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Shengyang Wang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China.,Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
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2
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Wang S, Zhang Q, Zhao Y, Sun J, Kang W, Wang F, Pan H, Tang G, Yu B. The Miharamycins and Amipurimycin: their Structural Revision and the Total Synthesis of the Latter. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905723] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Shengyang Wang
- Innovation Research Institute of Traditional Chinese MedicineShanghai University of Traditional Chinese Medicine 1200 Cai Lun Road Shanghai 201203 China
| | - Qingju Zhang
- National Engineering Research Centre for Carbohydrate SynthesisJiangxi Normal University Nanchang 330022 China
| | - Yachen Zhao
- State Key Laboratory of Bioorganic and Natural Products ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Jiansong Sun
- National Engineering Research Centre for Carbohydrate SynthesisJiangxi Normal University Nanchang 330022 China
| | - Wenjia Kang
- State Key Laboratory of Bioorganic and Natural Products ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Fei Wang
- State Key Laboratory of Bioorganic and Natural Products ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Haixue Pan
- State Key Laboratory of Bioorganic and Natural Products ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Gongli Tang
- State Key Laboratory of Bioorganic and Natural Products ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Biao Yu
- State Key Laboratory of Bioorganic and Natural Products ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
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3
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Wang S, Zhang Q, Zhao Y, Sun J, Kang W, Wang F, Pan H, Tang G, Yu B. The Miharamycins and Amipurimycin: their Structural Revision and the Total Synthesis of the Latter. Angew Chem Int Ed Engl 2019; 58:10558-10562. [PMID: 31190371 DOI: 10.1002/anie.201905723] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Indexed: 01/30/2023]
Abstract
The structural puzzle of amipurimycin, a peptidyl nucleoside antibiotic, is solved by total synthesis and X-ray diffraction analysis, with the originally proposed configurations at C3' and C8' inverted and those at C6', C2'', and C3'' corrected. A similar structural revision of the relevant miharamycins is proposed via chemical transformations and then validated by X-ray diffraction analysis. The miharamycins bear an unusual trans-fused dioxabicyclo[4.3.0]nonane sugar scaffold, which was previously assigned as being in the cis configuration.
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Affiliation(s)
- Shengyang Wang
- Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Road, Shanghai, 201203, China
| | - Qingju Zhang
- National Engineering Research Centre for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
| | - Yachen Zhao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Jiansong Sun
- National Engineering Research Centre for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
| | - Wenjia Kang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Fei Wang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Haixue Pan
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Gongli Tang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Biao Yu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
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Kang WJ, Pan HX, Wang S, Yu B, Hua H, Tang GL. Identification of the Amipurimycin Gene Cluster Yields Insight into the Biosynthesis of C9 Sugar Nucleoside Antibiotics. Org Lett 2019; 21:3148-3152. [PMID: 30990701 DOI: 10.1021/acs.orglett.9b00840] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Feeding studies indicate a possible synthetic pattern for the N-terminal cis-aminocyclopentane carboxylic acid (ACPC) and suggest an unusual source of the high-carbon sugar skeleton of amipurimycin (APM). The biosynthetic gene cluster of APM was identified and confirmed by in vivo experiments. A C9 core intermediate was discovered from null mutants of ACPC pathway, and an ATP-grasp enzyme (ApmA8) was reconstituted in vitro for ACPC loading. Our observations allow a first proposal of the APM biosynthetic pathway.
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Affiliation(s)
- Wen-Jia Kang
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Hai-Xue Pan
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences (CAS), CAS, Shanghai 200032 , China
| | - Shengyang Wang
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences (CAS), CAS, Shanghai 200032 , China
| | - Biao Yu
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences (CAS), CAS, Shanghai 200032 , China
| | - Huiming Hua
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Gong-Li Tang
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences (CAS), CAS, Shanghai 200032 , China
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Wang S, Sun J, Zhang Q, Cao X, Zhao Y, Tang G, Yu B. Amipurimycin: Total Synthesis of the Proposed Structures and Diastereoisomers. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800169] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Shengyang Wang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Jiansong Sun
- The National Engineering Research Centre for Carbohydrate Synthesis; Jiangxi Normal University; Nanchang 330022 China
| | - Qingju Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Xin Cao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Yachen Zhao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Gongli Tang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Biao Yu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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Wang S, Sun J, Zhang Q, Cao X, Zhao Y, Tang G, Yu B. Amipurimycin: Total Synthesis of the Proposed Structures and Diastereoisomers. Angew Chem Int Ed Engl 2018; 57:2884-2888. [DOI: 10.1002/anie.201800169] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Shengyang Wang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Jiansong Sun
- The National Engineering Research Centre for Carbohydrate Synthesis; Jiangxi Normal University; Nanchang 330022 China
| | - Qingju Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Xin Cao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Yachen Zhao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Gongli Tang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Biao Yu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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Seong SH, Roy A, Jung HA, Jung HJ, Choi JS. Protein tyrosine phosphatase 1B and α-glucosidase inhibitory activities of Pueraria lobata root and its constituents. JOURNAL OF ETHNOPHARMACOLOGY 2016; 194:706-716. [PMID: 27769948 DOI: 10.1016/j.jep.2016.10.007] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 08/29/2016] [Accepted: 10/03/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Pueraria lobata root was used to treat wasting-thirst regarded as diabetes mellitus and was included in the composition of Okcheonsan, which is prescribed for thirst-waste in traditional Chinese medicine. AIM OF THE STUDY The objective of this study was to evaluate the anti-diabetic potential of the root of Pueraria lobata and its constituents via protein tyrosine phosphatase 1B (PTP1B) and α-glucosidase inhibitory activities. MATERIALS AND METHODS In this study, anti-diabetic activities of the 70% ethanolic (EtOH) extract from P. lobata roots and its solvent soluble fractions with the isolated compounds were investigated by evaluating in vitro PTP1B and α-glucosidase inhibitory activities. We also examined the potentials of active compounds as PTP1B and α-glucosidase inhibitors via enzyme kinetics and in silico molecular docking simulation between the enzymes and active compounds. RESULTS Triterpenoids lupeol and lupenone were potent PTP1B inhibitors with IC50 values of 38.89±0.17 and 15.11±1.23μM. Kinetic study using the Lineweaver-Burk and Dixon plots demonstrated that these compounds showed a noncompetitive-type inhibition against PTP1B with respective Ki values of 13.88μM and 21.24μM. In addition, molecular docking simulation showed lupeol and lupenone has negative binding energy values of -8.03 and -8.56kcal/mol. Considering the α-glucosidase inhibitory potential, daidzein, genistein, and calycosin exhibited the most potent α-glucosidase inhibition with IC50 values of 8.58±0.94, 2.37±0.52 and 6.84±1.58μM, respectively. Kinetic study demonstrated that these 3 compounds showed a noncompetitive-type inhibition against α-glucosidase with respective Ki values of 17.64μM, 5.03μM and 13.83μM. Moreover, molecular docking simulation showed daidzein, genistein and calycosin has more lower binding energy (-7.16kcal/mol, -7.42kcal/mol and -7.31kcal/mol) with higher binding affinity and tight binding capacity in the molecular docking studies than standard ligand α-D-glucose (-6.74kcal/mol). CONCLUSION Our results of the present study clearly demonstrate the potential of P. lobata extract and its constituents to inhibit PTP1B and α-glucosidase, contributing to the development of therapeutic or preventive agents that can be used in the treatment of diabetes.
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Affiliation(s)
- Su Hui Seong
- Department of Food and Life Science, Pukyong National University, Busan 608-737, Republic of Korea
| | - Anupom Roy
- Department of Food and Life Science, Pukyong National University, Busan 608-737, Republic of Korea
| | - Hyun Ah Jung
- Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju 561-756, Republic of Korea.
| | - Hee Jin Jung
- Department of Food and Life Science, Pukyong National University, Busan 608-737, Republic of Korea
| | - Jae Sue Choi
- Department of Food and Life Science, Pukyong National University, Busan 608-737, Republic of Korea.
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8
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Markad PR, Kumbhar N, Dhavale DD. Synthesis of the C8'-epimeric thymine pyranosyl amino acid core of amipurimycin. Beilstein J Org Chem 2016; 12:1765-71. [PMID: 27559421 PMCID: PMC4979907 DOI: 10.3762/bjoc.12.165] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Accepted: 07/18/2016] [Indexed: 11/23/2022] Open
Abstract
The C8'-epimeric pyranosyl amino acid core 2 of amipurimycin was synthesized from D-glucose derived alcohol 3 in 13 steps and 14% overall yield. Thus, the Sharpless asymmetric epoxidation of allyl alcohol 7 followed by trimethyl borate mediated regio-selective oxirane ring opening with azide, afforded azido diol 10. The acid-catalyzed 1,2-acetonide ring opening in 10 concomitantly led to the formation of the pyranose ring skeleton to give 2,7-dioxabicyclo[3.2.1]octane 12. Functional group manipulation in 12 gave 21 that on stereoselective β-glycosylation afforded the pyranosyl thymine nucleoside 2 - a core of amipurimycin.
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Affiliation(s)
- Pramod R Markad
- Garware Research Centre, Department of Chemistry, Savitribai Phule Pune University (Formerly University of Pune), Pune-411007, India
| | - Navanath Kumbhar
- Garware Research Centre, Department of Chemistry, Savitribai Phule Pune University (Formerly University of Pune), Pune-411007, India
| | - Dilip D Dhavale
- Garware Research Centre, Department of Chemistry, Savitribai Phule Pune University (Formerly University of Pune), Pune-411007, India
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9
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Sontakke VA, Lawande PP, Kate AN, Khan A, Joshi R, Kumbhar AA, Shinde VS. Antiproliferative activity of bicyclic benzimidazole nucleosides: synthesis, DNA-binding and cell cycle analysis. Org Biomol Chem 2016; 14:4136-45. [DOI: 10.1039/c6ob00527f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Bicyclic benzimidazole nucleosides were synthesized from d-glucose as a starting material. DNA binding, antiproliferative activity and cell cycle analysis were performed.
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Affiliation(s)
- Vyankat A. Sontakke
- Department of Chemistry
- Savitribai Phule Pune University (formerly University of Pune)
- Pune-411007
- India
| | - Pravin P. Lawande
- Department of Chemistry
- Savitribai Phule Pune University (formerly University of Pune)
- Pune-411007
- India
| | - Anup N. Kate
- Department of Chemistry
- Savitribai Phule Pune University (formerly University of Pune)
- Pune-411007
- India
| | - Ayesha Khan
- Department of Chemistry
- Savitribai Phule Pune University (formerly University of Pune)
- Pune-411007
- India
| | - Rakesh Joshi
- Institute of Bioinformatics and Biotechnology
- Savitribai Phule Pune University
- Pune-411007
- India
| | - Anupa A. Kumbhar
- Department of Chemistry
- Savitribai Phule Pune University (formerly University of Pune)
- Pune-411007
- India
| | - Vaishali S. Shinde
- Department of Chemistry
- Savitribai Phule Pune University (formerly University of Pune)
- Pune-411007
- India
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10
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Markad PR, Rohokale RS, Pawar NJ, Dhavale DD. d-Glucose based synthesis of proline–serine C–C linked central and right hand core of a kaitocephalin-a glutamate receptor antagonist. RSC Adv 2015. [DOI: 10.1039/c5ra17442b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of the proline–serine core of kaitocephalin starting from d-glucose, utilizing the Jocic–Reeve and Corey–Link reaction sequence as key steps.
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Affiliation(s)
- Pramod R. Markad
- Department of Chemistry
- Garware Research Centre
- Savitribai Phule Pune University (Formerly University of Pune)
- Pune-411007
- India
| | - Rajendra S. Rohokale
- Department of Chemistry
- Garware Research Centre
- Savitribai Phule Pune University (Formerly University of Pune)
- Pune-411007
- India
| | - Nitin J. Pawar
- Department of Chemistry
- Garware Research Centre
- Savitribai Phule Pune University (Formerly University of Pune)
- Pune-411007
- India
| | - Dilip D. Dhavale
- Department of Chemistry
- Garware Research Centre
- Savitribai Phule Pune University (Formerly University of Pune)
- Pune-411007
- India
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11
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Bhuma N, Vangala M, Nair RJ, Sabharwal SG, Dhavale DD. Halogenated d-xylono-δ-lactams: synthesis and enzyme inhibition study. Carbohydr Res 2015; 402:215-24. [DOI: 10.1016/j.carres.2014.10.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 10/18/2014] [Accepted: 10/23/2014] [Indexed: 10/24/2022]
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12
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Schwarz S, Siewert B, Csuk R, Rauter AP. New antitumor 6-chloropurine nucleosides inducing apoptosis and G2/M cell cycle arrest. Eur J Med Chem 2014; 90:595-602. [PMID: 25499928 DOI: 10.1016/j.ejmech.2014.11.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 10/29/2014] [Accepted: 11/09/2014] [Indexed: 12/30/2022]
Abstract
Treating cancer has been challenging for decades, following countless approaches and attempts. Nucleosides, alone or as part of nucleotides, are vital elements of living systems and have shown pharmacological effects, e.g. as antibiotic or antiviral agents. We investigated the antitumor potential on human melanoma, lung and ovarian carcinomas, and on colon adenocarcinoma of a new series of purine nucleosides based on a 6-chloropurine or a 2-acetamido-6-chloropurine scaffold linked to perbenzylated hexosyl (glucosyl, galactosyl and mannosyl) residues. All compounds were tested in a sulforhodamine B (SRB) assay for their cytotoxicity and provided micromolar GI50 values with order of magnitude comparable to structurally similar chemotherapeutics, namely 2-chloro-2'-deoxyadenosine (cladribine). Furthermore, the induction of apoptosis was established and cell cycle analysis was accomplished demonstrating a G2/M cell cycle arrest.
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Affiliation(s)
- Stefan Schwarz
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Ed. C8, Piso 5, 1749-016 Lisboa, Portugal; Bereich Organische Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Bianka Siewert
- Bereich Organische Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - René Csuk
- Bereich Organische Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Amélia P Rauter
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Ed. C8, Piso 5, 1749-016 Lisboa, Portugal.
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13
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Ghosh S, More P, Derle A, Patil AB, Markad P, Asok A, Kumbhar N, Shaikh ML, Ramanamurthy B, Shinde VS, Dhavale DD, Chopade BA. Diosgenin from Dioscorea bulbifera: novel hit for treatment of type II diabetes mellitus with inhibitory activity against α-amylase and α-glucosidase. PLoS One 2014; 9:e106039. [PMID: 25216353 PMCID: PMC4162539 DOI: 10.1371/journal.pone.0106039] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 07/27/2014] [Indexed: 12/11/2022] Open
Abstract
Diabetes mellitus is a multifactorial metabolic disease characterized by post-prandial hyperglycemia (PPHG). α-amylase and α-glucosidase inhibitors aim to explore novel therapeutic agents. Herein we report the promises of Dioscorea bulbifera and its bioactive principle, diosgenin as novel α-amylase and α-glucosidase inhibitor. Among petroleum ether, ethyl acetate, methanol and 70% ethanol (v/v) extracts of bulbs of D. bulbifera, ethyl acetate extract showed highest inhibition upto 72.06 ± 0.51% and 82.64 ± 2.32% against α-amylase and α-glucosidase respectively. GC-TOF-MS analysis of ethyl acetate extract indicated presence of high diosgenin content. Diosgenin was isolated and identified by FTIR, 1H NMR and 13C NMR and confirmed by HPLC which showed an α-amylase and α-glucosidase inhibition upto 70.94 ± 1.24% and 81.71 ± 3.39%, respectively. Kinetic studies confirmed the uncompetitive mode of binding of diosgenin to α-amylase indicated by lowering of both Km and Vm. Interaction studies revealed the quenching of intrinsic fluorescence of α-amylase in presence of diosgenin. Similarly, circular dichroism spectrometry showed diminished negative humped peaks at 208 nm and 222 nm. Molecular docking indicated hydrogen bonding between carboxyl group of Asp300, while hydrophobic interactions between Tyr62, Trp58, Trp59, Val163, His305 and Gln63 residues of α-amylase. Diosgenin interacted with two catalytic residues (Asp352 and Glu411) from α-glucosidase. This is the first report of its kind that provides an intense scientific rationale for use of diosgenin as novel drug candidate for type II diabetes mellitus.
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Affiliation(s)
- Sougata Ghosh
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune, India
| | - Piyush More
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune, India
| | - Abhishek Derle
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune, India
| | - Ajay B. Patil
- Garware Research Centre, Department of Chemistry, University of Pune, Pune, India
| | - Pramod Markad
- Garware Research Centre, Department of Chemistry, University of Pune, Pune, India
| | - Adersh Asok
- Centre for Research in Nanotechnology and Science, Indian Institute of Technology Bombay, Powai, Mumbai, India
| | - Navanath Kumbhar
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune, India
| | - Mahemud L. Shaikh
- National Centre for Cell Science, University of Pune Campus, Ganeshkhind, Pune, India
| | - Boppana Ramanamurthy
- National Centre for Cell Science, University of Pune Campus, Ganeshkhind, Pune, India
| | - Vaishali S. Shinde
- Garware Research Centre, Department of Chemistry, University of Pune, Pune, India
| | - Dilip D. Dhavale
- Garware Research Centre, Department of Chemistry, University of Pune, Pune, India
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14
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Lugiņina J, Rjabovs V, Belyakov S, Turks M. On Moffatt dehydration of glucose-derived nitro alcohols. Carbohydr Res 2012; 350:86-9. [DOI: 10.1016/j.carres.2011.12.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Revised: 12/05/2011] [Accepted: 12/19/2011] [Indexed: 11/16/2022]
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15
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Mane RS, Ghosh S, Singh S, Chopade BA, Dhavale DD. Synthesis of anomeric 1,5-anhydrosugars as conformationally locked selective α-mannosidase inhibitors. Bioorg Med Chem 2011; 19:6720-5. [DOI: 10.1016/j.bmc.2011.09.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 09/23/2011] [Accepted: 09/24/2011] [Indexed: 10/17/2022]
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