Rika Obata

1.8k total citations
51 papers, 1.1k citations indexed

About

Rika Obata is a scholar working on Molecular Biology, Organic Chemistry and Cellular and Molecular Neuroscience. According to data from OpenAlex, Rika Obata has authored 51 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 35 papers in Molecular Biology, 17 papers in Organic Chemistry and 8 papers in Cellular and Molecular Neuroscience. Recurrent topics in Rika Obata's work include bioluminescence and chemiluminescence research (9 papers), Photoreceptor and optogenetics research (8 papers) and Cholesterol and Lipid Metabolism (6 papers). Rika Obata is often cited by papers focused on bioluminescence and chemiluminescence research (9 papers), Photoreceptor and optogenetics research (8 papers) and Cholesterol and Lipid Metabolism (6 papers). Rika Obata collaborates with scholars based in Japan, United States and Germany. Rika Obata's co-authors include Hiroshi Tomoda, Satoshi Ōmura, Toshiaki Sunazuka, Shigeru Nishiyama, Yoshihiro Harigaya, Shôjirô Maki, Hiroyuki Nishida, Satoshi Iwano, Takashi Hirano and Young Kook Kim and has published in prestigious journals such as Journal of the American Chemical Society, Biochemistry and Analytical Biochemistry.

In The Last Decade

Rika Obata

49 papers receiving 1.0k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Rika Obata Japan 22 600 372 211 150 145 51 1.1k
Steven P. Tanis United States 24 468 0.8× 711 1.9× 101 0.5× 100 0.7× 40 0.3× 45 1.2k
Franz Schuler Switzerland 17 523 0.9× 401 1.1× 77 0.4× 86 0.6× 68 0.5× 24 1.1k
László Somogyi Hungary 20 433 0.7× 500 1.3× 111 0.5× 131 0.9× 37 0.3× 98 1.3k
Stephanie E. Sen United States 18 724 1.2× 364 1.0× 114 0.5× 118 0.8× 18 0.1× 44 1.2k
Jesús Sandoval-Ramı́rez Mexico 19 652 1.1× 405 1.1× 68 0.3× 40 0.3× 54 0.4× 89 1.1k
Chrislaine Martinez France 9 1.1k 1.8× 109 0.3× 113 0.5× 14 0.1× 75 0.5× 9 1.4k
Sabine Brinkmann‐Chen United States 14 751 1.3× 412 1.1× 136 0.6× 17 0.1× 114 0.8× 19 1.1k
Gaspar Pinto Czechia 16 727 1.2× 113 0.3× 29 0.1× 38 0.3× 103 0.7× 25 953
Feng Cheng China 24 1.2k 2.0× 174 0.5× 30 0.1× 24 0.2× 232 1.6× 81 1.5k
Guangde Jiang United States 17 633 1.1× 689 1.9× 197 0.9× 18 0.1× 75 0.5× 29 1.5k

Countries citing papers authored by Rika Obata

Since Specialization
Citations

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

Fields of papers citing papers by Rika Obata

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Rika Obata

This figure shows the co-authorship network connecting the top 25 collaborators of Rika Obata. A scholar is included among the top collaborators of Rika Obata 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 Rika Obata. Rika Obata 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.
Yoshida, Chihiro, Takuya Yagi, Kazuya Miyashita, et al.. (2023). Synthesis and anti-tumor activities in human leukemia-derived cells of polyenylpyrroles with a methyl group at the conjugated polyene terminus. Bioorganic & Medicinal Chemistry Letters. 95. 129471–129471.
2.
3.
Yoshida, Chihiro, Yuki Fujita, Takuya Yagi, et al.. (2021). Synthesis of polyenylpyrrole derivatives with selective growth inhibitory activity against T-cell acute lymphoblastic leukemia cells. Bioorganic & Medicinal Chemistry Letters. 37. 127837–127837. 3 indexed citations
4.
Yasuda, Daisuke, Akihiro Yuasa, Rika Obata, et al.. (2017). Discovery of benzo[g]indoles as a novel class of non-covalent Keap1-Nrf2 protein-protein interaction inhibitor. Bioorganic & Medicinal Chemistry Letters. 27(22). 5006–5009. 26 indexed citations
5.
Yasuda, Daisuke, Akihiro Yuasa, Rika Obata, et al.. (2016). Synthesis of Keap1-phosphorylated p62 and Keap1-Nrf2 protein-protein interaction inhibitors and their inhibitory activity. Bioorganic & Medicinal Chemistry Letters. 26(24). 5956–5959. 38 indexed citations
6.
Iwano, Satoshi, Rika Obata, Masahiro Kiyama, et al.. (2013). Development of simple firefly luciferin analogs emitting blue, green, red, and near-infrared biological window light. Tetrahedron. 69(19). 3847–3856. 101 indexed citations
7.
Kiyama, Masahiro, Satoshi Iwano, Kazuto Ito, et al.. (2013). Synthesis and luminescence properties of biphenyl-type firefly luciferin analogs with a new, near-infrared light-emitting bioluminophore. Tetrahedron. 69(46). 9726–9734. 33 indexed citations
8.
Saitoh, Tsuyoshi, Masatoshi Takeiri, Shigeru Ohba, et al.. (2010). A new NF-κB inhibitor based on the amino-epoxyquinol core of DHMEQ. Bioorganic & Medicinal Chemistry Letters. 20(19). 5638–5642. 8 indexed citations
9.
Ishikawa, Yuichi, et al.. (2009). Synthesis and biological evaluation on novel analogs of 9-methylstreptimidone, an inhibitor of NF-κB. Bioorganic & Medicinal Chemistry Letters. 19(6). 1726–1728. 24 indexed citations
10.
Saitoh, Tsuyoshi, Eriko Suzuki, Rika Obata, et al.. (2009). Efficient synthesis of (±)-parasitenone, a novel inhibitor of NF-κB. Bioorganic & Medicinal Chemistry Letters. 19(18). 5383–5386. 21 indexed citations
11.
Nakasako, Masayoshi, et al.. (2008). Crystallization and preliminary X-ray diffraction experiments of arylmalonate decarboxylase fromAlcaligenes bronchisepticus. Acta Crystallographica Section F Structural Biology and Crystallization Communications. 64(7). 610–613. 3 indexed citations
12.
Obata, Rika, Taichi Ohshiro, Hiroshi Tomoda, & Shigeru Nishiyama. (2005). Discovery of halogenated eurypamide B analogues as inhibitors of lipid droplet accumulation in macrophages. Bioorganic & Medicinal Chemistry Letters. 15(19). 4189–4191. 2 indexed citations
13.
Obata, Rika, et al.. (2005). Efficient Route to (S)-Azetidine-2-carboxylic Acid. Bioscience Biotechnology and Biochemistry. 69(10). 1892–1897. 18 indexed citations
14.
Tomoda, Hiroshi, Masayoshi Arai, Nobuhiro Koyama, et al.. (2002). Purification of Shiga-like toxin 1 by pigeon egg white glycoproteins immobilized on Sepharose gels. Analytical Biochemistry. 311(1). 50–56. 12 indexed citations
15.
Rho, Mun‐Chual, Masahiko Hayashi, Rika Obata, et al.. (2000). Reversal of Multidrug Resistance by 7-O-Benzoylpyripyropene A in Multidrug-Resistant Tumor Cells.. The Journal of Antibiotics. 53(10). 1201–1206. 10 indexed citations
16.
Obata, Rika, Toshiaki Sunazuka, Zhuorong Li, et al.. (1996). Chemical Modification and Structure-activity Relationships of Pyripyropenes. 1. Modification at the Four Hydroxyl Groups.. The Journal of Antibiotics. 49(11). 1133–1148. 36 indexed citations
17.
Obata, Rika, Toshiaki Sunazuka, Yumiko Kato, et al.. (1996). Chemical Modification and Structure-activity Relationships of Pyripyropenes. 2. 1,11-Cyclic Analogs.. The Journal of Antibiotics. 49(11). 1149–1156. 24 indexed citations
18.
Tomoda, Hiroshi, Noriko Tabata, Hiroyuki Nishida, et al.. (1996). Biosynthesis of Pyripyropene A. The Journal of Organic Chemistry. 61(3). 882–886. 33 indexed citations
19.
Obata, Rika & Takeshi Ohnuma. (1993). Electrochemical Oxidation of Anti-tumor Agent, Etoposide.. Chemical and Pharmaceutical Bulletin. 41(10). 1846–1847. 3 indexed citations
20.
Ohnuma, Takeshi, Rika Obata, Yuji Nishiyama, et al.. (1992). Preparation and Antitumor Activity of 2''-O-,3''-O-and 2'',3''-Di-O-substituted Derivatives of Etoposide.. Chemical and Pharmaceutical Bulletin. 40(7). 1783–1788. 5 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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