Erhard Röder

468 total citations
44 papers, 346 citations indexed

About

Erhard Röder is a scholar working on Molecular Biology, Organic Chemistry and Ecology, Evolution, Behavior and Systematics. According to data from OpenAlex, Erhard Röder has authored 44 papers receiving a total of 346 indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Molecular Biology, 19 papers in Organic Chemistry and 8 papers in Ecology, Evolution, Behavior and Systematics. Recurrent topics in Erhard Röder's work include Plant Toxicity and Pharmacological Properties (20 papers), Botanical Research and Chemistry (8 papers) and Sesquiterpenes and Asteraceae Studies (7 papers). Erhard Röder is often cited by papers focused on Plant Toxicity and Pharmacological Properties (20 papers), Botanical Research and Chemistry (8 papers) and Sesquiterpenes and Asteraceae Studies (7 papers). Erhard Röder collaborates with scholars based in Germany, Switzerland and Netherlands. Erhard Röder's co-authors include Helmut Wiedenfeld, Cheng Dongliang, Kurt Hostettmann, Karine Ndjoko, Jean‐Luc Wolfender, Klaus Beyermann, Oskar Schimmer, Günter Willuhn, Theo Dingermann and Ilse Zündorf and has published in prestigious journals such as Phytochemistry, Journal of Natural Products and Planta Medica.

In The Last Decade

Erhard Röder

40 papers receiving 325 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Erhard Röder Germany 10 211 118 84 78 61 44 346
E. Röder Germany 12 241 1.1× 59 0.5× 131 1.6× 65 0.8× 61 1.0× 39 344
John R. Bearder United Kingdom 13 245 1.2× 98 0.8× 38 0.5× 61 0.8× 150 2.5× 29 428
Keizo Naya Japan 15 360 1.7× 136 1.2× 57 0.7× 72 0.9× 96 1.6× 36 510
K.K. Chakravarti India 12 170 0.8× 113 1.0× 28 0.3× 23 0.3× 71 1.2× 34 388
J. Dijkink Netherlands 17 139 0.7× 422 3.6× 25 0.3× 33 0.4× 62 1.0× 26 547
CA Henrick Australia 10 199 0.9× 123 1.0× 25 0.3× 23 0.3× 102 1.7× 15 361
Arnold Hauser Switzerland 11 113 0.5× 158 1.3× 34 0.4× 14 0.2× 67 1.1× 15 328
Walter Renold Switzerland 12 243 1.2× 119 1.0× 41 0.5× 27 0.3× 86 1.4× 15 462
NK Hart Australia 12 127 0.6× 140 1.2× 33 0.4× 76 1.0× 87 1.4× 31 333
М. Г. Левкович Uzbekistan 9 134 0.6× 199 1.7× 28 0.3× 59 0.8× 70 1.1× 75 344

Countries citing papers authored by Erhard Röder

Since Specialization
Citations

This map shows the geographic impact of Erhard Röder'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 Erhard Röder with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Erhard Röder more than expected).

Fields of papers citing papers by Erhard Röder

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Erhard Röder. 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 Erhard Röder. The network helps show where Erhard Röder may publish in the future.

Co-authorship network of co-authors of Erhard Röder

This figure shows the co-authorship network connecting the top 25 collaborators of Erhard Röder. A scholar is included among the top collaborators of Erhard Röder 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 Erhard Röder. Erhard Röder 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.
Ndjoko, Karine, Jean‐Luc Wolfender, Erhard Röder, & Kurt Hostettmann. (1999). Determination of Pyrrolizidine Alkaloids in Senecio Species by Liquid Chromatography/Thermospray-Mass Spectrometry and Liquid Chromatography/Nuclear Magnetic Resonance Spectroscopy. Planta Medica. 65(6). 562–566. 31 indexed citations
2.
Zündorf, Ilse, Helmut Wiedenfeld, Erhard Röder, & Theo Dingermann. (1998). Generation and Characterization of Monoclonal Antibodies against the Pyrrolizidine Alkaloid Retrorsine. Planta Medica. 64(3). 259–263. 13 indexed citations
3.
Röder, Erhard, et al.. (1993). Pyrrolizidine Alkaloids of the GenusHomogyne. Planta Medica. 59(1). 90–91. 2 indexed citations
4.
Willuhn, Günter, et al.. (1992). Tussilagine and Isotussilagine: Two Pyrrolizidine Alkaloids in the GenusArnica1. Planta Medica. 58(6). 556–557. 8 indexed citations
5.
Wiedenfeld, Helmut & Erhard Röder. (1991). Pyrrolizidine Alkaloids fromAgeratum conyzoides. Planta Medica. 57(6). 578–579. 60 indexed citations
6.
Schimmer, Oskar, et al.. (1991). Isogravacridonchlorine: A Potent and Direct Acting Frameshift Mutagen from the Roots ofRuta graveolens. Planta Medica. 57(1). 59–61. 15 indexed citations
7.
Röder, Erhard, et al.. (1990). Synthese von (1α,7α,8β)‐(±)‐7‐Hydroxy‐1‐(hydroxymethyl)pyrrolizidin, der Necin‐Base rac‐Platynecin. Liebigs Annalen der Chemie. 1990(6). 607–609. 5 indexed citations
8.
Röder, Erhard, et al.. (1988). A Study of Stemona Alkaloids, III. Application of 2D-nmr Spectroscopy in the Structure Determination of Stemoninine. Journal of Natural Products. 51(2). 202–211. 31 indexed citations
9.
Wiedenfeld, Helmut, et al.. (1986). The Aklaloid Content of Senecio nemorensis, ssp. nemorensis and Senecio nemorensis, ssp. fuchsii. Planta Medica. 52(5). 426–426. 1 indexed citations
10.
Klüfers, Peter, et al.. (1986). Struktur‐Wirkungs‐Beziehungen bei Nefopamhydrochlorid. Archiv der Pharmazie. 319(7). 583–590. 4 indexed citations
11.
Röder, Erhard, et al.. (1986). Synthese von 2,3‐Dihydro‐1H‐pyrrolizin‐7‐carbaldehyd, dem Sexualpheromon Danaidal. Liebigs Annalen der Chemie. 1986(9). 1645–1647. 4 indexed citations
12.
13.
Röder, Erhard. (1984). Wie verbreitet und wie gefährlich sind Pyrrolizidinalkaloide?. Pharmazie in unserer Zeit. 13(2). 33–38. 2 indexed citations
14.
Wiedenfeld, Helmut, Erhard Röder, Α. Kirfel, & Georg Will. (1981). Die absolute Konfiguration des Pyrrolizidinalkaloids O‐7‐Angelylheliotridin. Archiv der Pharmazie. 314(9). 737–740. 1 indexed citations
15.
Wiedenfeld, Helmut & Erhard Röder. (1979). Das pyrrolizidinalkaloid senecionin aus Senecio fuchsii. Phytochemistry. 18(6). 1083–1084. 25 indexed citations
16.
17.
Röder, Erhard, et al.. (1978). Azepino‐indole, 1. Mitt. Versuche zur Synthese von Azepino[3,4‐b]indolen über Skatylidenketone. Archiv der Pharmazie. 311(10). 817–822. 3 indexed citations
18.
Röder, Erhard, et al.. (1976). 1.7‐Zyklisierung von Acetoacetyl‐indolen. Archiv der Pharmazie. 309(3). 185–189. 5 indexed citations
19.
Beyermann, Klaus & Erhard Röder. (1967). Kombination von Dünnschicht-Chromatographie und infrarotspektrographischer Bestimmung von Mikrogramm-Mengen, gezeigt am Beispiel der Analyse von oralen Antikonzipientien. Fresenius Zeitschrift für Analytische Chemie. 230(5). 347–355. 8 indexed citations
20.
Röder, Erhard & Günter Herrmann. (1966). Verdampfung von Uranspaltprodukten in Wasserstoff, Stickstoff und Sauerstoff. Fresenius Zeitschrift für Analytische Chemie. 219(1). 93–102. 2 indexed citations

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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