Search Results - "Kock, Matthias"

Linear diterpenes from the marine brown alga Bifurcaria bifurcata: a chemical perspective by Muñoz, Julie, Culioli, Gérald, Köck, Matthias

“…This article will give a complete overview of linear diterpenes isolated from the brown alga Bifurcaria bifurcata . For this purpose all published acyclic…”
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Is Enantiomer Assignment Possible by NMR Spectroscopy Using Residual Dipolar Couplings from Chiral Nonracemic Alignment Media?-A Critical Assessment by Berger, Robert, Courtieu, Jacques, Gil, Roberto R., Griesinger, Christian, Köck, Matthias, Lesot, Philippe, Luy, Burkhard, Merlet, Denis, Navarro-Vázquez, Armando, Reggelin, Michael, Reinscheid, Uwe M., Thiele, Christina M., Zweckstetter, Markus

“…Insensitive towards inversion: Can residual dipolar couplings (RDCs) and other anisotropic NMR observables be used to determine absolute configuration? A…”
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Further eleganolone-derived diterpenes from the brown alga Bifurcaria bifurcata by Göthel, Qun, Lichte, Ellen, Köck, Matthias

“…Four new diterpenes (1–4) together with six known members of this family were isolated from the brown alga Bifurcaria bifurcata collected off the coast near…”
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Tracking of fast moving neuronal vesicles with ageladine A by Bickmeyer, Ulf, Heine, Martin, Podbielski, Imke, Münd, Dennis, Köck, Matthias, Karuso, Peter

“…► Vesicle tracking in cultured hippocampal neurons is shown using the alkaloid ageladine A derived marine sponges. ► Ageladine A is pH sensitive and…”
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Bayesian Inference Applied to NMR-Based Configurational Assignments by Floating Chirality Distance Geometry Calculations by Immel, Stefan, Köck, Matthias, Reggelin, Michael

“…Using NMR data, the assignment of the correct 3D configuration and conformation to unknown natural products is of pivotal importance in pharmaceutical and…”
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NMR-Based Configurational Assignments of Natural Products: How Floating Chirality Distance Geometry Calculations Simplify Gambling with 2 N–1 Diastereomers by Immel, Stefan, Köck, Matthias, Reggelin, Michael

“…Using NMR data, the assignment of the correct 3D configuration and conformation to unknown natural products is of pivotal importance in pharmaceutical and…”
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Formyleleganolone and bibifuran, two metabolites from the brown alga Bifurcaria bifurcata by Gothel, Qun, Munoz, Julie, Kock, Matthias

“…[Display omitted] ► Isolation of two new diterpenoids from the brown alga Bifurcaria bifurcata. ► Structure elucidation of the two new diterpenoids by 1D and…”
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NMR-Based Configurational Assignments of Natural Products: Gibbs Sampling and Bayesian Inference Using Floating Chirality Distance Geometry Calculations by Immel, Stefan, Köck, Matthias, Reggelin, Michael

“…Floating chirality restrained distance geometry (fc-rDG) calculations are used to directly evolve structures from NMR data such as NOE-derived intramolecular…”
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Model-Free Approach for the Configurational Analysis of Marine Natural Products by Köck, Matthias, Reggelin, Michael, Immel, Stefan

“…The NMR-based configurational analysis of complex marine natural products is still not a routine task. Different NMR parameters are used for the assignment of…”
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Incorporation of 4J-HMBC and NOE Data into Computer-Assisted Structure Elucidation with WebCocon by Köck, Matthias, Lindel, Thomas, Junker, Jochen

“…Over the past decades, different software programs have been developed for the Computer-Assisted Structure Elucidation (CASE) with NMR data using with various…”
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Structural Assignment of Tetrabromostyloguanidine: Does the Relative Configuration of the Palau'amines Need Revision? by Grube, Achim, Köck, Matthias

“…Products of the Caribbean: The palau'amine derivative tetrabromostyloguanidine 1 was isolated from the sponge Stylissa caribica and the elucidation of its…”
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The Advanced Floating Chirality Distance Geometry Approach-How Anisotropic NMR Parameters Can Support the Determination of the Relative Configuration of Natural Products by Köck, Matthias, Reggelin, Michael, Immel, Stefan

“…The configurational analysis of complex natural products by NMR spectroscopy is still a challenging task. The assignment of the relative configuration is…”
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Hybrid Pyrrole–Imidazole Alkaloids from the Sponge Agelas sceptrum by Muñoz, Julie, Köck, Matthias

“…A chemical investigation of the tropical sponge Agelas sceptrum from Plana Cays (Bahamas) led to the isolation of two hybrid pyrrole–imidazole alkaloids…”
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Anti-Infective and Antiviral Activity of Valinomycin and Its Analogues from a Sea Cucumber-Associated Bacterium, Streptomyces sp. SV 21 by Wibowo, Joko T, Kellermann, Matthias Y, Köck, Matthias, Putra, Masteria Y, Murniasih, Tutik, Mohr, Kathrin I, Wink, Joachim, Praditya, Dimas F, Steinmann, Eike, Schupp, Peter J

“…The manuscript investigated the isolation, characterization and anti-infective potential of valinomycin ( ), streptodepsipeptide P11A ( ), streptodepsipeptide…”
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Enantioselective Total Syntheses of (−)-Palau’amine, (−)-Axinellamines, and (−)-Massadines by Seiple, Ian B, Su, Shun, Young, Ian S, Nakamura, Akifumi, Yamaguchi, Junichiro, Jørgensen, Lars, Rodriguez, Rodrigo A, O’Malley, Daniel P, Gaich, Tanja, Köck, Matthias, Baran, Phil S

“…Dimeric pyrrole–imidazole alkaloids represent a rich and topologically unique class of marine natural products. This full account will follow the progression…”
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Bioplastics in the Sea: Rapid In-Vitro Evaluation of Degradability and Persistence at Natural Temperatures by Miksch, Lukas, Köck, Matthias, Gutow, Lars, Saborowski, Reinhard

“…The progressive substitution of petroleum-based polymers, such as polyethylene, polyvinylchloride, or polyethylene terephtalate, by so-called bioplastics…”
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Stylissadines A and B:  The First Tetrameric Pyrrole−Imidazole Alkaloids by Grube, Achim, Köck, Matthias

“…Pyrrole−imidazole alkaloids are widely distributed in marine sponges of the orders Halichondrida and Agelasida. Chemical investigation of the Caribbean sponge…”
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Structure Elucidation and in Vitro Toxicity of New Azaspiracids Isolated from the Marine Dinoflagellate Azadinium poporum by Krock, Bernd, Tillmann, Urban, Potvin, Éric, Jeong, Hae Jin, Drebing, Wolfgang, Kilcoyne, Jane, Al-Jorani, Ahmed, Twiner, Michael J, Göthel, Qun, Köck, Matthias

“…Two strains of Azadinium poporum, one from the Korean West coast and the other from the North Sea, were mass cultured for isolation of new azaspiracids…”
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Stylissamides E and F, Cyclic Heptapeptides from the Caribbean Sponge Stylissa caribica by Cychon, Christine, Köck, Matthias

“…In addition to the four known stylissamides, A (1), B (2), C, and D, two new cyclic heptapeptides, stylissamides E (3) and F (4), were isolated from the…”
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The marine sponge Agelas citrina as a source of the new pyrrole-imidazole alkaloids citrinamines A-D and N-methylagelongine by Cychon, Christine, Lichte, Ellen, Köck, Matthias

“…The chemical investigation of the Caribbean sponge Agelas citrina revealed four new pyrrole-imidazole alkaloids (PIAs), the citrinamines A-D (1-4) and the…”
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