1
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Kumar P, Nalli Y, Singh S, Wakchaure PD, Gor R, Ghadge VA, Kim E, Ramalingam S, Azger Dusthackeer VN, Yoon YJ, Ganguly B, Shinde PB. Dactylides A-C, three new bioactive 22-membered macrolides produced by Dactylosporangium aurantiacum. J Antibiot (Tokyo) 2023; 76:503-510. [PMID: 37208457 DOI: 10.1038/s41429-023-00632-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 04/15/2023] [Accepted: 05/02/2023] [Indexed: 05/21/2023]
Abstract
Three new 22-membered polyol macrolides, dactylides A-C (1-3), were isolated from Dactylosporangium aurantiacum ATCC 23491 employing repeated chromatographic separations, and their structures were established based on detailed analysis of NMR and MS data. The relative configurations at the stereocenters were established via vicinal 1H-1H coupling constants, NOE correlations, and by application of Kishi's universal NMR database. In order to get insights into the biosynthetic pathway of 1-3, the genome sequence of the producer strain D. aurantiacum was obtained and the putative biosynthetic gene cluster encoding their biosynthesis was identified through bioinformatic analysis using antiSMASH. Compounds 1-3 showed significant in-vitro antimycobacterial and cytotoxic activity.
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Affiliation(s)
- Pankaj Kumar
- Natural Products & Green Chemistry Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific and Industrial Research (CSIR), Bhavnagar, Gujarat, 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Yedukondalu Nalli
- Natural Products & Green Chemistry Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific and Industrial Research (CSIR), Bhavnagar, Gujarat, 364002, India
| | - Sanju Singh
- Natural Products & Green Chemistry Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific and Industrial Research (CSIR), Bhavnagar, Gujarat, 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Padmaja D Wakchaure
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Computation and Simulation Unit, Analytical and Environmental Science Division and Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat, 364002, India
| | - Ravi Gor
- Department of Genetic Engineering, School of Bio-Engineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India
| | - Vishal A Ghadge
- Natural Products & Green Chemistry Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific and Industrial Research (CSIR), Bhavnagar, Gujarat, 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Eunji Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Satish Ramalingam
- Department of Genetic Engineering, School of Bio-Engineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India
| | - V N Azger Dusthackeer
- Department of Bacteriology, National Institute for Research in Tuberculosis, ICMR, Sathyamoorty road, Chetpet, Chennai, 600031, Tamil Nadu, India
| | - Yeo Joon Yoon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Bishwajit Ganguly
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Computation and Simulation Unit, Analytical and Environmental Science Division and Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat, 364002, India
| | - Pramod B Shinde
- Natural Products & Green Chemistry Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific and Industrial Research (CSIR), Bhavnagar, Gujarat, 364002, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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2
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Kadowaki T, Kainuma R, Kato S, Konno H. Synthesis and Configuration Confirmation of the ATHOD Fatty Amino Acid Residue in the Burkholdines. JOURNAL OF NATURAL PRODUCTS 2022; 85:2052-2061. [PMID: 35853209 DOI: 10.1021/acs.jnatprod.2c00469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Eight possible diastereomers of the 3-amino-5,6,7-trihydroxy octadecanoic acid (ATHOD) moiety of the burkholdines (Bks) have been synthesized and their configurations assigned. Though the relative configuration of the triol in the ATHOD residue of the Bks was proposed to be anti-anti-anti in the literature, 1H NMR spectra of our synthesized anti-anti-anti ATHOD derivative was inconsistent with that of the isolated ATHOD residue, suggesting that the assignment of the relative configuration of that residue in the literature was incorrect. However, by comparison of the NMR data of our ATHOD derivatives with that of configurationally defined samples of 2-amino-4-pentanol using Kishi's NMR database method, we conclude that the absolute configuration of the ATHOD moiety is (3R,5S,6R,7S). In addition, we revealed that the ATHOD residue present in the occidiofungins A-D has the same configuration as that in all the Bks.
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Affiliation(s)
- Toma Kadowaki
- Department of Biological Engineering, Graduate School of Science and Engineering, Yamagata University, Yonezawa, 992-8510, Japan
| | - Rin Kainuma
- Department of Biological Engineering, Graduate School of Science and Engineering, Yamagata University, Yonezawa, 992-8510, Japan
| | - Seiya Kato
- Department of Biological Engineering, Graduate School of Science and Engineering, Yamagata University, Yonezawa, 992-8510, Japan
| | - Hiroyuki Konno
- Department of Biological Engineering, Graduate School of Science and Engineering, Yamagata University, Yonezawa, 992-8510, Japan
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3
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Amewu RK, Spangenberg T. Detection of Mycolactone by Thin Layer Chromatography. Methods Mol Biol 2022; 2387:131-149. [PMID: 34643909 DOI: 10.1007/978-1-0716-1779-3_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
By means of thin layer chromatography coupled to a fluorescence enhancer, a highly sensitive and operationally simple method to detect the mycolactones stemming from the human pathogen Mycobacterium ulcerans was developed and applied to various sample sources.
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Affiliation(s)
| | - Thomas Spangenberg
- Global Health Institute of Merck, Ares Trading S.A. (a subsidiary of Merck KGaA Darmstadt Germany), Eysins, Switzerland
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4
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A Polyol-Polyol Super-Carbon-Chain Compound Containing Thirty-Six Carbon Stereocenters from the Dinoflagellate Amphidinium gibbosum: Absolute Configuration and Multi-Segment Modification. Mar Drugs 2020; 18:md18120590. [PMID: 33255887 PMCID: PMC7759953 DOI: 10.3390/md18120590] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/21/2020] [Accepted: 11/22/2020] [Indexed: 12/24/2022] Open
Abstract
A super-carbon-chain compound, named gibbosol C, featuring a polyoxygenated C70-linear-carbon-chain backbone encompassing two acyclic polyol chains, was obtained from the South China Sea dinoflagellate Amphidinium gibbosum. Its planar structure was elucidated by extensive NMR investigations, whereas its absolute configurations, featuring the presence of 36 carbon stereocenters and 30 hydroxy groups, were successfully established by comparison of NMR data of the ozonolyzed products with those of gibbosol A, combined with J-based configuration analysis, Kishi’s universal NMR database, and the modified Mosher’s MTPA ester method. Multi-segment modification was revealed as the smart biosynthetic strategy for the dinoflagellate to create remarkable super-carbon-chain compounds with structural diversity.
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Friedrich RM, Friestad GK. Inspirations from tetrafibricin and related polyketides: new methods and strategies for 1,5-polyol synthesis. Nat Prod Rep 2020; 37:1229-1261. [PMID: 32412021 DOI: 10.1039/c9np00070d] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Covering: up to 2019 Selective synthesis with control of remote stereogenic centers has long been a challenge in organic chemistry. In recent years the interest in this topic has been energized by isolation and synthetic studies of tetrafibricin and other natural products containing 1,5-polyols, such as amphidinol 3, marinomycins, and caylobolide. Here we discuss recent developments in 1,5-polyol synthesis, including an overview of selected bioactive natural products in this class and examples of new synthetic methodologies and strategies dedicated to remote stereocontrol in these structures. To illustrate in greater depth, we review several instructive examples of how these innovations have been applied in synthetic studies on tetrafibricin.
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Affiliation(s)
- Ryan M Friedrich
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA.
| | - Gregory K Friestad
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA.
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6
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Li W, Yan R, Yu Y, Shi Z, Mándi A, Shen L, Kurtán T, Wu J. Determination of the Absolute Configuration of Super‐Carbon‐Chain Compounds by a Combined Chemical, Spectroscopic, and Computational Approach: Gibbosols A and B. Angew Chem Int Ed Engl 2020; 59:13028-13036. [PMID: 32343023 DOI: 10.1002/anie.202004358] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/15/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Wan‐Shan Li
- School of Pharmaceutical Sciences Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 China
| | - Ren‐Jie Yan
- School of Pharmaceutical Sciences Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 China
| | - Yi Yu
- Marine Drugs Research Center College of Pharmacy Jinan University 601 Huangpu Avenue West Guangzhou 510632 China
| | - Zhi Shi
- College of Life Science and Technology Jinan University 601 Huangpu Avenue West Guangzhou 510632 China
| | - Attila Mándi
- Department of Organic Chemistry University of Debrecen PO Box 400 4002 Debrecen Hungary
| | - Li Shen
- Marine Drugs Research Center College of Pharmacy Jinan University 601 Huangpu Avenue West Guangzhou 510632 China
| | - Tibor Kurtán
- Department of Organic Chemistry University of Debrecen PO Box 400 4002 Debrecen Hungary
| | - Jun Wu
- School of Pharmaceutical Sciences Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 China
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7
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Li W, Yan R, Yu Y, Shi Z, Mándi A, Shen L, Kurtán T, Wu J. Determination of the Absolute Configuration of Super‐Carbon‐Chain Compounds by a Combined Chemical, Spectroscopic, and Computational Approach: Gibbosols A and B. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004358] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Wan‐Shan Li
- School of Pharmaceutical Sciences Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 China
| | - Ren‐Jie Yan
- School of Pharmaceutical Sciences Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 China
| | - Yi Yu
- Marine Drugs Research Center College of Pharmacy Jinan University 601 Huangpu Avenue West Guangzhou 510632 China
| | - Zhi Shi
- College of Life Science and Technology Jinan University 601 Huangpu Avenue West Guangzhou 510632 China
| | - Attila Mándi
- Department of Organic Chemistry University of Debrecen PO Box 400 4002 Debrecen Hungary
| | - Li Shen
- Marine Drugs Research Center College of Pharmacy Jinan University 601 Huangpu Avenue West Guangzhou 510632 China
| | - Tibor Kurtán
- Department of Organic Chemistry University of Debrecen PO Box 400 4002 Debrecen Hungary
| | - Jun Wu
- School of Pharmaceutical Sciences Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 China
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8
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Menna M, Imperatore C, Mangoni A, Della Sala G, Taglialatela-Scafati O. Challenges in the configuration assignment of natural products. A case-selective perspective. Nat Prod Rep 2019; 36:476-489. [DOI: 10.1039/c8np00053k] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An overview by a case study approach on the currently available methods for the configurational analysis of natural products.
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Affiliation(s)
- Marialuisa Menna
- Department of Pharmacy
- University of Naples Federico II
- 80131 Napoli
- Italy
| | | | - Alfonso Mangoni
- Department of Pharmacy
- University of Naples Federico II
- 80131 Napoli
- Italy
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9
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Gaudêncio SP, Pereira F. Dereplication: racing to speed up the natural products discovery process. Nat Prod Rep 2015; 32:779-810. [PMID: 25850681 DOI: 10.1039/c4np00134f] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Covering: 1993-2014 (July)To alleviate the dereplication holdup, which is a major bottleneck in natural products discovery, scientists have been conducting their research efforts to add tools to their "bag of tricks" aiming to achieve faster, more accurate and efficient ways to accelerate the pace of the drug discovery process. Consequently dereplication has become a hot topic presenting a huge publication boom since 2012, blending multidisciplinary fields in new ways that provide important conceptual and/or methodological advances, opening up pioneering research prospects in this field.
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Affiliation(s)
- Susana P Gaudêncio
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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10
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Li K, Chung-Davidson YW, Bussy U, Li W. Recent advances and applications of experimental technologies in marine natural product research. Mar Drugs 2015; 13:2694-713. [PMID: 25939037 PMCID: PMC4446601 DOI: 10.3390/md13052694] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 04/02/2015] [Accepted: 04/14/2015] [Indexed: 11/16/2022] Open
Abstract
Marine natural products are a rich source of novel and biologically active compounds. The number of identified marine natural compounds has grown 20% over the last five years from 2009 to 2013. Several challenges, including sample collection and structure elucidation, have limited the development of this research field. Nonetheless, new approaches, such as sampling strategies for organisms from extreme ocean environments, nanoscale NMR and computational chemistry for structural determination, are now available to overcome the barriers. In this review, we highlight the experimental technology innovations in the field of marine natural products, which in our view will lead to the development of many new drugs in the future.
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Affiliation(s)
- Ke Li
- Department of Fisheries and Wildlife, Michigan State University, Room 13 Natural Resources Building, 480 Wilson Road, East Lansing, MI 48824, USA.
| | - Yu-Wen Chung-Davidson
- Department of Fisheries and Wildlife, Michigan State University, Room 13 Natural Resources Building, 480 Wilson Road, East Lansing, MI 48824, USA.
| | - Ugo Bussy
- Department of Fisheries and Wildlife, Michigan State University, Room 13 Natural Resources Building, 480 Wilson Road, East Lansing, MI 48824, USA.
| | - Weiming Li
- Department of Fisheries and Wildlife, Michigan State University, Room 13 Natural Resources Building, 480 Wilson Road, East Lansing, MI 48824, USA.
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11
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Zhang FM, Tu YQ. Towards the real didemnaketal A: total syntheses of two C-21 stereoisomers of the proposed didemnaketal A. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.05.065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Norrehed S, Johansson H, Grennberg H, Gogoll A. Improved Stereochemical Analysis of Conformationally Flexible Diamines by Binding to a Bisporphyrin Molecular Clip. Chemistry 2013; 19:14631-8. [DOI: 10.1002/chem.201300533] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2013] [Revised: 06/06/2013] [Indexed: 01/09/2023]
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13
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Cen-Pacheco F, Rodríguez J, Norte M, Fernández JJ, Hernández Daranas A. Connecting Discrete Stereoclusters by Using DFT and NMR Spectroscopy: The Case of Nivariol. Chemistry 2013; 19:8525-32. [DOI: 10.1002/chem.201204272] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Revised: 03/22/2013] [Indexed: 11/08/2022]
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14
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Nozawa K, Tsuda M, Tanaka N, Kubota T, Fukushi E, Kawabata J, Kobayashi J. Stereochemistry of theonezolides A–C. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.11.120] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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15
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Molinski TF, Morinaka BI. INTEGRATED APPROACHES TO THE CONFIGURATIONAL ASSIGNMENT OF MARINE NATURAL PRODUCTS. Tetrahedron 2012; 68:9307-9343. [PMID: 23814320 PMCID: PMC3694619 DOI: 10.1016/j.tet.2011.12.070] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Tadeusz F. Molinski
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive MC0358, La Jolla, CA, 92093
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Drive MC0358, La Jolla, CA, 92093
| | - Brandon I. Morinaka
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive MC0358, La Jolla, CA, 92093
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16
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Nilewski C, Carreira EM. Recent Advances in the Total Synthesis of Chlorosulfolipids. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101525] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Lodewyk MW, Siebert MR, Tantillo DJ. Computational prediction of 1H and 13C chemical shifts: a useful tool for natural product, mechanistic, and synthetic organic chemistry. Chem Rev 2011; 112:1839-62. [PMID: 22091891 DOI: 10.1021/cr200106v] [Citation(s) in RCA: 892] [Impact Index Per Article: 68.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Michael W Lodewyk
- Department of Chemistry, University of California-Davis, Davis, California 95616, USA
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18
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Wenzel TJ, Chisholm CD. Using NMR spectroscopic methods to determine enantiomeric purity and assign absolute stereochemistry. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2011; 59:1-63. [PMID: 21600355 DOI: 10.1016/j.pnmrs.2010.07.003] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Accepted: 07/28/2010] [Indexed: 05/30/2023]
Affiliation(s)
- Thomas J Wenzel
- Department of Chemistry, Bates College, Lewiston, Maine 04240, USA.
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19
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Andrianasolo EH, Haramaty L, McPhail KL, White E, Vetriani C, Falkowski P, Lutz R. Bathymodiolamides A and B, ceramide derivatives from a deep-sea hydrothermal vent invertebrate mussel, Bathymodiolus thermophilus. JOURNAL OF NATURAL PRODUCTS 2011; 74:842-6. [PMID: 21222464 PMCID: PMC3081957 DOI: 10.1021/np100601w] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Two ceramide derivatives, bathymodiolamides A (1) and B (2), were isolated from the deep-sea hydrothermal vent invertebrate mussel Bathymodiolus thermophilus. The molecular structures of these compounds were determined using a combination of NMR spectroscopy, mass spectrometry, and chemical degradation. Biological activities were assessed in a ApopScreen cell-based screen for apoptosis induction and potential anticancer activity. To our knowledge, this is the first report of secondary metabolites from the marine hydrothermal vent mussel B. thermophilus.
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Affiliation(s)
- Eric H. Andrianasolo
- Center for Marine Biotechnology, Institute of Marine and Coastal Sciences, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901-8521, United States
| | - Liti Haramaty
- Center for Marine Biotechnology, Institute of Marine and Coastal Sciences, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901-8521, United States
| | - Kerry L. McPhail
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, Oregon 97331, United States
| | - Eileen White
- Center for Advanced Biotechnology and Medicine, Department of Molecular Biology and Biochemistry, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
- University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, Piscataway, New Jersey 08854, United States
- The Cancer Institute of New Jersey, New Brunswick, New Jersey 08903, United States
| | - Costantino Vetriani
- Center for Marine Biotechnology, Institute of Marine and Coastal Sciences, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901-8521, United States
| | - Paul Falkowski
- Center for Marine Biotechnology, Institute of Marine and Coastal Sciences, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901-8521, United States
| | - Richard Lutz
- Center for Marine Biotechnology, Institute of Marine and Coastal Sciences, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901-8521, United States
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20
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Sugahara K, Kitamura Y, Murata M, Satake M, Tachibana K. Prorocentrol, a Polyoxy Linear Carbon Chain Compound Isolated from the Toxic Dinoflagellate Prorocentrum hoffmannianum. J Org Chem 2011; 76:3131-8. [DOI: 10.1021/jo102585k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kohtaro Sugahara
- Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yoshiaki Kitamura
- Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Michio Murata
- Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masayuki Satake
- Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazuo Tachibana
- Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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21
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Wenzel TJ, Chisholm CD. Assignment of absolute configuration using chiral reagents and NMR spectroscopy. Chirality 2010; 23:190-214. [DOI: 10.1002/chir.20889] [Citation(s) in RCA: 133] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Accepted: 05/18/2010] [Indexed: 11/11/2022]
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22
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Paquette LA, Moura-Letts G, Wang GP. From D-glucose to enantiomerically pure cycloctanoses. The glycosidase inhibitory capacity of medium-ring carbasugars. J Org Chem 2010; 74:2099-107. [PMID: 19173597 DOI: 10.1021/jo802620h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Exhaustive dihydroxylation of the pair of cyclooctadienols consisting of 4 and 5, which are available in enantiomerically pure form from d-glucose, resulted in the formation of two diastereomeric tetraols in each case. The difference in polarity of the 6/7 and 8/9 pairs facilitated their chromatographic separation. Ensuing acetylation and PMB deprotection allowed for the assignment of relative (and ultimately absolute) stereochemistry to the resulting monohydric alcohols on the basis of J(HH) analysis of their (1)H NMR spectra. The highly functionalized exomethylenecyclooctanes 14-17, which were derived by periodinane oxidation and Wittig olefination, were further elaborated by hydroboration and global deprotection. The eight members of the cyclooctanose family of carbasugars and their precursor intermediates consistently showed patterns of J(HH) values in line with the contiguous stereochemical relationships. Also assayed was their specific inhibitory behavior toward glycosidases.
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Affiliation(s)
- Leo A Paquette
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210, USA.
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23
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Leiro V, Seco J, Quiñoá E, Riguera R. Using a Combination of Magnetic Anisotropic Effects for the Configurational Assignment of Amino Alcohols. Chem Asian J 2010; 5:2106-12. [DOI: 10.1002/asia.201000229] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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24
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Nilewski C, Geisser RW, Ebert MO, Carreira EM. Conformational and configurational analysis in the study and synthesis of chlorinated natural products. J Am Chem Soc 2010; 131:15866-76. [PMID: 19817365 DOI: 10.1021/ja906461h] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first detailed study of the J-based configuration analysis method in chlorinated hydrocarbons and chlorohydrins is presented along with the development of a spectroscopic database that facilitates configurational assignment of these structures. The data are generated through the investigation of model structures in solution by NMR spectroscopic methods and in the solid state by X-ray crystallography. Consequently, complete conformational analysis of trichlorinated hexane-1,2- and -1,3-diols is presented. The investigations in chlorinated systems for the first time attest to the relevance, reliability, and accuracy of the spectroscopic approach in configurational assignment, which had been otherwise developed for polyketides. During the synthesis of the various molecules that constitute the database and exemplify the various possible stereochemical patterns, a number of observations were made that underscore the unique features of these chlorinated systems. Thus, certain diastereomeric subclasses of 4,5-dichloro-2,3-epoxyhexane-1-ols display a propensity to undergo ring-opening reactions at C-3 with concomitant inversion of configuration at the neighboring C-Cl at C4, implicating the intermediacy of chloronium ions. The observations of positional and stereochemical scrambling in polychlorinated hydrocarbons underscore the necessity of a spectroscopic database that enables rapid, reliable configurational assignment of chlorinated natural products and intermediates en route to these.
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Affiliation(s)
- Christian Nilewski
- Laboratorium für Organische Chemie, ETH Zürich, CH-8093 Zürich, Switzerland
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Freire F, Lallana E, Quiñoá E, Riguera R. The Stereochemistry of 1,2,3-Triols Revealed by1H NMR Spectroscopy: Principles and Applications. Chemistry 2009; 15:11963-75. [DOI: 10.1002/chem.200901505] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Moura-Letts G, Paquette LA. Contiguously Substituted Cyclooctane Polyols. Configurational Assignments via 1H NMR Correlations and Symmetry Considerations. J Org Chem 2008; 73:7663-70. [DOI: 10.1021/jo801443d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Gustavo Moura-Letts
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210
| | - Leo A. Paquette
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210
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Mandel AL, Jones BD, La Clair JJ, Burkart MD. A synthetic entry to pladienolide B and FD-895. Bioorg Med Chem Lett 2007; 17:5159-64. [PMID: 17681759 PMCID: PMC2652656 DOI: 10.1016/j.bmcl.2007.06.094] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2007] [Revised: 06/21/2007] [Accepted: 06/28/2007] [Indexed: 11/16/2022]
Abstract
Presented within are syntheses of the pladienolide B and FD-895 side-chains, as well as models of the essential ring-closing metathesis and Stille coupling that will be used to complete their total syntheses. Several analogs of the pladienolide B side-chain were also prepared in order to evaluate the scope of the methodology and to create a library of structures that could be used for stereochemical and SAR analyses.
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Affiliation(s)
- Alexander L Mandel
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
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Bifulco G, Dambruoso P, Gomez-Paloma L, Riccio R. Determination of relative configuration in organic compounds by NMR spectroscopy and computational methods. Chem Rev 2007; 107:3744-79. [PMID: 17649982 DOI: 10.1021/cr030733c] [Citation(s) in RCA: 452] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Giuseppe Bifulco
- Dipartimento di Scienze Farmaceutiche, University of Salerno, Via Ponte Don Melillo, 84084 Fisciano, Salerno, Italy.
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Symbiodinolide, a novel polyol macrolide that activates N-type Ca2+ channel, from the symbiotic marine dinoflagellate Symbiodinium sp. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.02.093] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
[structure: see text] The C5-C10 relative stereochemistry of sagittamide A was predicted, with the use of the 3JH,H profiles assembled from the spin-coupling constants reported in the literature. The predicted relative stereochemistry was then confirmed by a total synthesis of two relevant remote diastereomers. The absolute configuration of sagittamide A was established through a detailed 1H NMR analysis of the two remote diastereomers, followed by doping experiments of them with the authentic natural product.
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Affiliation(s)
- Hirofumi Seike
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA
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