Léo Marion

3.1k total citations
125 papers, 1.7k citations indexed

About

Léo Marion is a scholar working on Organic Chemistry, Pharmacology and Ecology, Evolution, Behavior and Systematics. According to data from OpenAlex, Léo Marion has authored 125 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 46 papers in Organic Chemistry, 42 papers in Pharmacology and 36 papers in Ecology, Evolution, Behavior and Systematics. Recurrent topics in Léo Marion's work include Botanical Research and Chemistry (35 papers), Plant-based Medicinal Research (31 papers) and Chemical synthesis and alkaloids (27 papers). Léo Marion is often cited by papers focused on Botanical Research and Chemistry (35 papers), Plant-based Medicinal Research (31 papers) and Chemical synthesis and alkaloids (27 papers). Léo Marion collaborates with scholars based in Canada, United States and Romania. Léo Marion's co-authors include Edward Leete, R. A. Heacock, O. E. Edwards, M. Przybylska, S. Kirkwood, Ian D. Spenser, J. C. Seaton, A. V. Robertson, O. Achmatowicz and D. A. Ramsay and has published in prestigious journals such as Nature, Journal of the American Chemical Society and Journal of Biological Chemistry.

In The Last Decade

Léo Marion

116 papers receiving 1.3k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Léo Marion Canada 21 620 549 499 280 242 125 1.7k
Börje Wickberg Sweden 23 713 1.1× 482 0.9× 239 0.5× 51 0.2× 214 0.9× 102 1.7k
Günther Ohloff Switzerland 32 1.3k 2.1× 796 1.4× 107 0.2× 163 0.6× 307 1.3× 104 2.7k
George Buechi United States 30 1.4k 2.3× 679 1.2× 226 0.5× 110 0.4× 435 1.8× 71 2.4k
Mauri Lounasmaa Finland 22 1.4k 2.3× 808 1.5× 778 1.6× 197 0.7× 371 1.5× 265 2.5k
James P. Kutney Canada 26 1.3k 2.1× 1.2k 2.1× 833 1.7× 152 0.5× 380 1.6× 207 2.7k
A. J. Birch Australia 21 718 1.2× 642 1.2× 95 0.2× 145 0.5× 224 0.9× 129 1.8k
SR Johns Australia 19 540 0.9× 420 0.8× 185 0.4× 93 0.3× 233 1.0× 95 1.1k
W. B. Whalley United Kingdom 21 581 0.9× 484 0.9× 138 0.3× 57 0.2× 196 0.8× 168 1.6k
S.C. Bhattacharyya India 19 476 0.8× 537 1.0× 90 0.2× 79 0.3× 302 1.2× 114 1.3k
E Ritchie Australia 27 964 1.6× 774 1.4× 179 0.4× 79 0.3× 484 2.0× 116 1.9k

Countries citing papers authored by Léo Marion

Since Specialization
Citations

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

Fields of papers citing papers by Léo Marion

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Léo Marion

This figure shows the co-authorship network connecting the top 25 collaborators of Léo Marion. A scholar is included among the top collaborators of Léo Marion 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 Léo Marion. Léo Marion 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.
Mollov, N. M., et al.. (1969). The structure of lappaconine. Tetrahedron Letters. 10(26). 2189–2192. 13 indexed citations
2.
Achmatowicz, O., et al.. (1965). CHASMANINE AND ITS STRUCTURE. Canadian Journal of Chemistry. 43(4). 825–839. 17 indexed citations
3.
Marion, Léo, et al.. (1965). THE STRUCTURE OF RETAMINE AND THE PARTIAL SYNTHESIS OF THE (−)-ENANTIOMORPH. Canadian Journal of Chemistry. 43(7). 2012–2016. 2 indexed citations
4.
Marion, Léo, et al.. (1964). THE STRUCTURE OF INDACONITINE. Canadian Journal of Chemistry. 42(12). 2700–2704. 1 indexed citations
5.
TSUDA, Y. & Léo Marion. (1963). PSEUDACONITINE, AND THE STEREOCHEMICAL RELATIONSHIP OF THE HIGHLY OXYGENATED ACONITE ALKALOIDS. Canadian Journal of Chemistry. 41(6). 1485–1489. 10 indexed citations
6.
Marion, Léo. (1963). The highly-oxygenated diterpenoid alkaloids. Pure and Applied Chemistry. 6(4). 621–634. 12 indexed citations
7.
Marion, Léo, et al.. (1962). The biogenesis of stachydrine. Phytochemistry. 1(3). 209–213. 15 indexed citations
8.
Marion, Léo, et al.. (1958). THE BIOGENESIS OF ALKALOIDS. Journal of Biological Chemistry. 231(2). 799–805. 27 indexed citations
9.
Edwards, O. E., et al.. (1958). THE INTERRELATION OF DELPHELINE AND LYCOCTONINE. Canadian Journal of Chemistry. 36(7). 1097–1102. 11 indexed citations
10.
Martin‐Smith, M., R. Greenhalgh, & Léo Marion. (1957). THE STRUCTURE OF ANNOTININE. Canadian Journal of Chemistry. 35(4). 409–417. 3 indexed citations
11.
Martin‐Smith, M. & Léo Marion. (1957). THE PAPILIONACEOUS ALKALOIDS: XXIII. THE STRUCTURE OF BAPTIFOLINE. Canadian Journal of Chemistry. 35(1). 39–41. 2 indexed citations
12.
Marion, Léo, et al.. (1956). THE BIOGENESIS OF ALKALOIDS: XVII. FURTHER STUDY OF THE ROLE OF ORNITHINE IN THE BIOGENESIS OF STACHYDRINE. Canadian Journal of Chemistry. 34(12). 1704–1708. 12 indexed citations
13.
Przybylska, M. & Léo Marion. (1956). THE CRYSTAL STRUCTURE OF DES-(OXYMETHYLENE)-LYCOCTONINE HYDRIODIDE MONOHYDRATE. Canadian Journal of Chemistry. 34(2). 185–187. 31 indexed citations
14.
Edwards, O. E., Léo Marion, & D. K. R. Stewart. (1956). THE CHEMISTRY OF LYCOCTONINE. Canadian Journal of Chemistry. 34(9). 1315–1328. 19 indexed citations
15.
Leete, Edward, Léo Marion, & Ian D. Spenser. (1955). THE BIOGENESIS OF ALKALOIDS. Journal of Biological Chemistry. 214(1). 71–77. 14 indexed citations
16.
Edwards, O. E. & Léo Marion. (1954). LYCOCTONINE: THE ENVIRONMENT OF THE NITROGEN. Canadian Journal of Chemistry. 32(12). 1146–1148. 5 indexed citations
17.
Marion, Léo, et al.. (1953). THE BIOGENESIS OF ALKALOIDS: VIII. THE ROLE OF METHIONINE IN THE FORMATION OF THE N-METHYL GROUPS OF THE ALKALOID HORDENINE. Canadian Journal of Chemistry. 31(5). 488–492. 16 indexed citations
18.
Cockburn, William & Léo Marion. (1952). THE PAPILIONACEOUS ALKALOIDS: XV. THE STRUCTURE AND THE PARTIAL SYNTHESIS OF RHOMBIFOLINE. Canadian Journal of Chemistry. 30(2). 92–101. 6 indexed citations
19.
Leete, Edward, S. Kirkwood, & Léo Marion. (1952). THE BIOGENESIS OF ALKALOIDS: VI. THE FORMATION OF HORDENINE AND N-METHYLTYRAMINE FROM TYRAMINE IN BARLEY. Canadian Journal of Chemistry. 30(10). 749–760. 52 indexed citations
20.
Marion, Léo, et al.. (1951). THE PAPILIONACEOUS ALKALOIDS: IX. NATURAL OCCURRENCE OF THE ALKALOIDS OF THE α-ISOSPARTEINE GROUP. Canadian Journal of Chemistry. 29(1). 22–29. 10 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Börje Wickberg Breakdown of academic impact, for papers by Günther Ohloff Breakdown of academic impact, for papers by George Buechi Breakdown of academic impact, for papers by Mauri Lounasmaa Breakdown of academic impact, for papers by James P. Kutney Breakdown of academic impact, for papers by A. J. Birch Breakdown of academic impact, for papers by SR Johns Breakdown of academic impact, for papers by W. B. Whalley Breakdown of academic impact, for papers by S.C. Bhattacharyya Breakdown of academic impact, for papers by E Ritchie
Rankless by CCL
2026