Birgit Claasen

825 total citations
30 papers, 685 citations indexed

About

Birgit Claasen is a scholar working on Molecular Biology, Organic Chemistry and Oncology. According to data from OpenAlex, Birgit Claasen has authored 30 papers receiving a total of 685 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Molecular Biology, 13 papers in Organic Chemistry and 4 papers in Oncology. Recurrent topics in Birgit Claasen's work include Synthetic Organic Chemistry Methods (5 papers), Asymmetric Synthesis and Catalysis (5 papers) and Peptidase Inhibition and Analysis (4 papers). Birgit Claasen is often cited by papers focused on Synthetic Organic Chemistry Methods (5 papers), Asymmetric Synthesis and Catalysis (5 papers) and Peptidase Inhibition and Analysis (4 papers). Birgit Claasen collaborates with scholars based in Germany, Spain and France. Birgit Claasen's co-authors include Robert Meinecke, Bernd Meyer, Sabine Laschat, Ernest Giralt, Teresa Tarragó, Nessim Kichik, Vlada B. Urlacher, Roger Prades, Dirk Rothenstein and Joachim Bill and has published in prestigious journals such as Journal of the American Chemical Society, Nucleic Acids Research and Angewandte Chemie International Edition.

In The Last Decade

Birgit Claasen

30 papers receiving 679 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Birgit Claasen Germany 14 390 120 86 77 69 30 685
Weihong Du China 22 612 1.6× 133 1.1× 227 2.6× 122 1.6× 88 1.3× 74 1.2k
Gerald Zapata‐Torres Chile 15 292 0.7× 182 1.5× 59 0.7× 78 1.0× 74 1.1× 48 760
Martin Kubala Czechia 19 486 1.2× 154 1.3× 117 1.4× 144 1.9× 111 1.6× 54 935
Grégori Gerebtzoff Switzerland 11 460 1.2× 201 1.7× 296 3.4× 109 1.4× 76 1.1× 16 1.1k
Jay T. Goodwin United States 16 525 1.3× 215 1.8× 126 1.5× 58 0.8× 85 1.2× 27 955
Roberto Artali Italy 24 698 1.8× 255 2.1× 168 2.0× 82 1.1× 62 0.9× 70 1.2k
Constantinos Potamitis Greece 18 364 0.9× 367 3.1× 41 0.5× 58 0.8× 40 0.6× 34 796
Darren Fayne Ireland 19 406 1.0× 456 3.8× 95 1.1× 55 0.7× 65 0.9× 52 1.1k
Rita Maria Concetta Di Martino Italy 18 373 1.0× 281 2.3× 51 0.6× 45 0.6× 201 2.9× 32 1.0k
Johnson J. Inbaraj United States 15 303 0.8× 219 1.8× 29 0.3× 133 1.7× 67 1.0× 30 869

Countries citing papers authored by Birgit Claasen

Since Specialization
Citations

This map shows the geographic impact of Birgit Claasen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Birgit Claasen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Birgit Claasen more than expected).

Fields of papers citing papers by Birgit Claasen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Birgit Claasen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Birgit Claasen. The network helps show where Birgit Claasen may publish in the future.

Co-authorship network of co-authors of Birgit Claasen

This figure shows the co-authorship network connecting the top 25 collaborators of Birgit Claasen. A scholar is included among the top collaborators of Birgit Claasen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Birgit Claasen. Birgit Claasen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
2.
Claasen, Birgit, et al.. (2023). Enantioenriched Boron C,N‐Chelates via Chirality Transfer. Chemistry - A European Journal. 29(41). e202301324–e202301324. 8 indexed citations
3.
Claasen, Birgit, et al.. (2022). Modulating chitin synthesis in marine algae with iminosugars obtained by SmI2 and FeCl3-mediated diastereoselective carbonyl ene reaction. Organic & Biomolecular Chemistry. 20(33). 6606–6618. 2 indexed citations
4.
5.
Frey, Wolfgang, et al.. (2019). Asymmetric Catalysis in Liquid Confinement: Probing the Performance of Novel Chiral Rhodium–Diene Complexes in Microemulsions and Conventional Solvents. Chemistry - A European Journal. 25(40). 9464–9476. 16 indexed citations
6.
Frey, Wolfgang, et al.. (2018). Asymmetric Organocatalysis Revisited: Taming Hydrindanes with Jørgensen–Hayashi Catalyst. Synthesis. 51(5). 1123–1134. 2 indexed citations
7.
Kervio, Eric, Birgit Claasen, Ulrich E. Steiner, & Clemens Richert. (2014). The strength of the template effect attracting nucleotides to naked DNA. Nucleic Acids Research. 42(11). 7409–7420. 46 indexed citations
8.
Syrén, Per‐Olof, Stephan C. Hammer, Birgit Claasen, & Bernhard Hauer. (2014). Entropy is Key to the Formation of Pentacyclic Terpenoids by Enzyme‐Catalyzed Polycyclization. Angewandte Chemie International Edition. 53(19). 4845–4849. 27 indexed citations
9.
Claasen, Birgit, et al.. (2014). High‐Fidelity Recognition of RNA: Solution Structure of a DNA:RNA Hybrid Duplex with a Molecular Cap. ChemBioChem. 15(17). 2584–2589. 1 indexed citations
10.
Claasen, Birgit, et al.. (2014). Asymmetric Evans syn‐Aldol Reactions of Terpene‐Derived Enals: Scope and Limitations. European Journal of Organic Chemistry. 2014(30). 6720–6733. 5 indexed citations
11.
Krebs, Michael, Wolfgang Frey, Birgit Claasen, et al.. (2013). Tricyclic challenges: synthetic approaches toward dodecahydrocyclopenta[a]indenes. Tetrahedron. 69(35). 7373–7380. 2 indexed citations
12.
Spitzner, D., et al.. (2012). Synthesis and Characterization of Chiral Guanidines und Guanidinium Salts Derived from 1-Phenylethylamine. Zeitschrift für Naturforschung B. 67(4). 337–346. 6 indexed citations
13.
Spitzner, D., et al.. (2012). Synthesis and Characterization of Chiral Guanidines und Guanidinium Salts Derived from 1-Phenylethylamine. Zeitschrift für Naturforschung B. 67. 337–337. 3 indexed citations
14.
Kichik, Nessim, Teresa Tarragó, Birgit Claasen, et al.. (2011). 15N Relaxation NMR Studies of Prolyl Oligopeptidase, an 80 kDa Enzyme, Reveal a Pre‐existing Equilibrium between Different Conformational States. ChemBioChem. 12(18). 2737–2739. 21 indexed citations
15.
Sauer, Sven, E Kessler, Hans‐Ullrich Siehl, et al.. (2010). Influence of N‐Alkyl Substituents and Counterions on the Structural and Mesomorphic Properties of Guanidinium Salts: Experiment and Quantum Chemical Calculations. ChemPhysChem. 11(17). 3752–3765. 32 indexed citations
16.
Tarragó, Teresa, Jaime Martín‐Benito, Eduard Sabidó, et al.. (2009). A new side opening on prolyl oligopeptidase revealed by electron microscopy. FEBS Letters. 583(20). 3344–3348. 16 indexed citations
17.
Tarragó, Teresa, Birgit Claasen, Nessim Kichik, et al.. (2009). A Cost‐Effective Labeling Strategy for the NMR Study of Large Proteins: Selective 15N‐Labeling of the Tryptophan Side Chains of Prolyl Oligopeptidase. ChemBioChem. 10(17). 2736–2739. 10 indexed citations
18.
Rehders, D., Birgit Claasen, Lars Redecke, et al.. (2009). Peptide NMHRYPNQ of the Cellular Prion Protein (PrPC) Inhibits Aggregation and Is a Potential Key for Understanding Prion–Prion Interactions. Journal of Molecular Biology. 392(1). 198–207. 4 indexed citations
19.
Tarragó, Teresa, Nessim Kichik, Birgit Claasen, et al.. (2008). Baicalin, a prodrug able to reach the CNS, is a prolyl oligopeptidase inhibitor. Bioorganic & Medicinal Chemistry. 16(15). 7516–7524. 78 indexed citations
20.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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