R.M. Wiedhopf

763 total citations
20 papers, 616 citations indexed

About

R.M. Wiedhopf is a scholar working on Molecular Biology, Plant Science and Organic Chemistry. According to data from OpenAlex, R.M. Wiedhopf has authored 20 papers receiving a total of 616 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Molecular Biology, 7 papers in Plant Science and 4 papers in Organic Chemistry. Recurrent topics in R.M. Wiedhopf's work include Natural product bioactivities and synthesis (5 papers), Plant biochemistry and biosynthesis (4 papers) and Traditional and Medicinal Uses of Annonaceae (4 papers). R.M. Wiedhopf is often cited by papers focused on Natural product bioactivities and synthesis (5 papers), Plant biochemistry and biosynthesis (4 papers) and Traditional and Medicinal Uses of Annonaceae (4 papers). R.M. Wiedhopf collaborates with scholars based in United States. R.M. Wiedhopf's co-authors include Jack R. Cole, Sterling J. Torrance, Robert B. Bates, Satish K. Arora, S.D. Jolad, Joseph J. Hoffman, Elmer R. Trumbull, George R. Kriek, Shivanand D. Jolad and Maria Cláudia Marx Young and has published in prestigious journals such as Journal of the American Chemical Society, The Journal of Organic Chemistry and Phytochemistry.

In The Last Decade

R.M. Wiedhopf

20 papers receiving 566 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
R.M. Wiedhopf United States 13 413 159 141 116 73 20 616
Sterling J. Torrance United States 11 341 0.8× 143 0.9× 127 0.9× 114 1.0× 71 1.0× 17 532
Tatsushi Murae Japan 15 412 1.0× 115 0.7× 90 0.6× 73 0.6× 53 0.7× 50 557
Kuo-Hsiung Lee Japan 10 323 0.8× 129 0.8× 96 0.7× 77 0.7× 50 0.7× 12 528
Masayoshi Okano Japan 18 714 1.7× 250 1.6× 184 1.3× 146 1.3× 164 2.2× 62 962
Yu‐Shia Cheng Taiwan 17 587 1.4× 188 1.2× 183 1.3× 60 0.5× 87 1.2× 32 778
Ih‐Sheng Chen Taiwan 16 291 0.7× 165 1.0× 264 1.9× 187 1.6× 155 2.1× 38 661
Yu-Hsuan Lan Taiwan 17 356 0.9× 138 0.9× 134 1.0× 222 1.9× 86 1.2× 22 688
Ih‐Sheng Chen Taiwan 16 272 0.7× 92 0.6× 180 1.3× 97 0.8× 92 1.3× 31 495
Narihiko Fukamiya Japan 18 791 1.9× 255 1.6× 208 1.5× 188 1.6× 138 1.9× 64 1.0k
Tian‐Jye Hsieh Taiwan 13 288 0.7× 85 0.5× 134 1.0× 229 2.0× 53 0.7× 15 601

Countries citing papers authored by R.M. Wiedhopf

Since Specialization
Citations

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

Fields of papers citing papers by R.M. Wiedhopf

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by R.M. Wiedhopf. 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 R.M. Wiedhopf. The network helps show where R.M. Wiedhopf may publish in the future.

Co-authorship network of co-authors of R.M. Wiedhopf

This figure shows the co-authorship network connecting the top 25 collaborators of R.M. Wiedhopf. A scholar is included among the top collaborators of R.M. Wiedhopf 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 R.M. Wiedhopf. R.M. Wiedhopf 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.
Torrance, Sterling J., R.M. Wiedhopf, Joseph J. Hoffmann, & Jack R. Cole. (1979). Petalostetin, a new isoflavone from Petalostemon candidum. Phytochemistry. 18(2). 366–368. 4 indexed citations
2.
Hoffmann, Joseph J., et al.. (1978). Odoratin and Paucin: Cytotoxic Sesquiterpene Lactones from Baileya pauciradiata (Compositae). Journal of Pharmaceutical Sciences. 67(11). 1633–1634. 5 indexed citations
3.
Hoffman, Joseph J., Sterling J. Torrance, R.M. Wiedhopf, & Jack R. Cole. (1977). Cytotoxic Agents from Michelia champaca and Talauma ovata: Parthenolide and Costunolide. Journal of Pharmaceutical Sciences. 66(6). 883–884. 35 indexed citations
4.
Jolad, S.D., R.M. Wiedhopf, & Jack R. Cole. (1977). Cytotoxic Agents from Bursera klugii (Burseraceae) I: Isolation of Sapelins A and B. Journal of Pharmaceutical Sciences. 66(6). 889–890. 11 indexed citations
5.
Torrance, Sterling J., et al.. (1977). Preliminary investigation of Croton californicus var. Tenuis and Uvaria kirkii: A xanthone and a benzyldihydrochalcone. Phytochemistry. 16(12). 2040–2040. 7 indexed citations
6.
Torrance, Sterling J., R.M. Wiedhopf, & Jack R. Cole. (1977). Antitumor Agents from Jatropha macrorhiza (Euphorbiaceae) III: Acetylaleuritolic Acid. Journal of Pharmaceutical Sciences. 66(9). 1348–1349. 13 indexed citations
7.
Jolad, Shivanand D., Joseph J. Hoffman, Sterling J. Torrance, et al.. (1977). Bouvardin and deoxybouvardin, antitumor cyclic hexapeptides from Bouvardia ternifolia (Rubiaceae). Journal of the American Chemical Society. 99(24). 8040–8044. 171 indexed citations
8.
Jolad, S.D., R.M. Wiedhopf, & Jack R. Cole. (1977). Cytotoxic Agents from Bursera morelensis (Burseraceae): Deoxypodophyllotoxin and a New Lignan, 5′-Desmethoxydeoxypodophyllotoxin. Journal of Pharmaceutical Sciences. 66(6). 892–893. 37 indexed citations
9.
Hoffmann, Joseph J., R.M. Wiedhopf, & Jack R. Cole. (1977). Cytotoxic and Tumor Inhibitory Agent from Polygala macradenia Gray (Polygalaceae): 4′-Demethyldeoxypodophyllotoxin. Journal of Pharmaceutical Sciences. 66(4). 586–587. 13 indexed citations
10.
Trumbull, Elmer R., et al.. (1976). Tumor Inhibitory Agents from Vauquelinia corymbosa (Rosaceae). Journal of Pharmaceutical Sciences. 65(9). 1407–1408. 43 indexed citations
11.
Cole, Jack R., Sterling J. Torrance, R.M. Wiedhopf, Satish K. Arora, & Robert B. Bates. (1976). Uvaretin, a new antitumor agent from Uvaria acuminata (Annonaceae). The Journal of Organic Chemistry. 41(10). 1852–1855. 75 indexed citations
12.
Torrance, Sterling J., R.M. Wiedhopf, Jack R. Cole, et al.. (1976). Antitumor agents from Jatropha macrorhiza (Euphorbiaceae). II. Isolation and characterization of jatrophatrione. The Journal of Organic Chemistry. 41(10). 1855–1857. 36 indexed citations
13.
Jolad, S.D., Jens Hoffmann, R.M. Wiedhopf, et al.. (1976). Antitumor agent from dougl. Ex lindl. (Scrophulariaceae): penstemide, a novel iridoid-type glucoside. Tetrahedron Letters. 17(46). 4119–4120. 14 indexed citations
14.
Jolad, S.D., R.M. Wiedhopf, & Jack R. Cole. (1975). Tumor-Inhibitory Agent from Montezuma speciosissima (Malvaceae). Journal of Pharmaceutical Sciences. 64(11). 1889–1890. 6 indexed citations
15.
Torrance, Sterling J., R.M. Wiedhopf, & Jack R. Cole. (1975). Ambrosin, Tumor Inhibitory Agent from Hymenoclea salsola (Asteraceae). Journal of Pharmaceutical Sciences. 64(5). 887–888. 5 indexed citations
16.
Jolad, S.D., R.M. Wiedhopf, & Jack R. Cole. (1974). Tumor-Inhibitory Agent From Zaluzania Robinsonii (Compositae). Journal of Pharmaceutical Sciences. 63(8). 1321–1322. 10 indexed citations
17.
Wiedhopf, R.M., Elmer R. Trumbull, & Jack R. Cole. (1973). Antitumor Agents From Jatropha Macrorhiza (euphorbiaceae) I: Isolation and Characterization of Jatropham. Journal of Pharmaceutical Sciences. 62(7). 1206–1207. 41 indexed citations
18.
Wiedhopf, R.M., et al.. (1973). Tumor Inhibitory Agent from Magnolia grandiflora (Magnoliaceae) I: Parthenolide. Journal of Pharmaceutical Sciences. 62(2). 345–345. 41 indexed citations
19.
Wiedhopf, R.M., et al.. (1973). Antitumor Agents from Alnus oregona (Betulaceae). Journal of Pharmaceutical Sciences. 62(1). 139–140. 20 indexed citations
20.
Jolad, S.D., et al.. (1972). Tumor-Inhibitory Agent from Hyptis emoryi (Labiatae). Journal of Pharmaceutical Sciences. 61(11). 1819–1819. 29 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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