Takeshi Ohnuma

66 total papers · 769 total citations
37 papers, 577 citations indexed

About

Takeshi Ohnuma is a scholar working on Organic Chemistry, Toxicology and Pharmacology. According to data from OpenAlex, Takeshi Ohnuma has authored 37 papers receiving a total of 577 indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Organic Chemistry, 7 papers in Toxicology and 5 papers in Pharmacology. Recurrent topics in Takeshi Ohnuma's work include Chemical synthesis and alkaloids (8 papers), Bioactive Compounds and Antitumor Agents (7 papers) and Alkaloids: synthesis and pharmacology (5 papers). Takeshi Ohnuma is often cited by papers focused on Chemical synthesis and alkaloids (8 papers), Bioactive Compounds and Antitumor Agents (7 papers) and Alkaloids: synthesis and pharmacology (5 papers). Takeshi Ohnuma collaborates with scholars based in Japan, Germany and United States. Takeshi Ohnuma's co-authors include Yoshio Ban, George Buechi, Masayoshi Ando, Takeshi Oishi, Yasushi Murakami, Wataru Sugimoto, Yosuke Takasu, Takeshi Wakamatsu, Koh‐ichi Seki and Takahide Nishi and has published in prestigious journals such as Journal of the American Chemical Society, The Journal of Organic Chemistry and Tetrahedron Letters.

In The Last Decade

Takeshi Ohnuma

37 papers receiving 549 citations

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author						Papers	Cites
Takeshi Ohnuma	380	119	85	72	63	37	577
William E. Rosen	326 0.9×	32 0.3×	53 0.6×	117 1.6×	15 0.2×	35	594
J. W. Loder	205 0.5×	20 0.2×	21 0.2×	144 2.0×	34 0.5×	25	531
C. Sudarsanakumar	120 0.3×	30 0.3×	74 0.9×	217 3.0×	31 0.5×	54	526
Philippe Dupau	392 1.0×	23 0.2×	28 0.3×	142 2.0×	10 0.2×	19	600
N. R. AYYANGAR	306 0.8×	20 0.2×	12 0.1×	129 1.8×	24 0.4×	58	561
Shao‐Ming Chi	147 0.4×	31 0.3×	56 0.7×	123 1.7×	36 0.6×	41	591
Jun Cheng	110 0.3×	22 0.2×	39 0.5×	137 1.9×	32 0.5×	33	611
Teresa Varea	346 0.9×	42 0.4×	12 0.1×	183 2.5×	14 0.2×	31	603
Dejan Jeremić	294 0.8×	16 0.1×	98 1.2×	78 1.1×	10 0.2×	46	618
Yan Li	109 0.3×	8 0.1×	103 1.2×	82 1.1×	63 1.0×	42	649

Countries citing papers authored by Takeshi Ohnuma

Since Specialization

Citations

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

Fields of papers citing papers by Takeshi Ohnuma

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Takeshi Ohnuma

This figure shows the co-authorship network connecting the top 25 collaborators of Takeshi Ohnuma. A scholar is included among the top collaborators of Takeshi Ohnuma 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 Takeshi Ohnuma. Takeshi Ohnuma is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Loading papers...

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 Andrew Levy Breakdown of academic impact, for papers by Yong Jiu Shi Breakdown of academic impact, for papers by Robbie Nicol Breakdown of academic impact, for papers by David Oliver Breakdown of academic impact, for papers by Vijitha Periyasamy Breakdown of academic impact, for papers by Jin Yoshida Breakdown of academic impact, for papers by Hussein Ageely Breakdown of academic impact, for papers by Yajing Song