Keisuke Kojima

1.5k total citations
84 papers, 1.1k citations indexed

About

Keisuke Kojima is a scholar working on Molecular Biology, Organic Chemistry and Plant Science. According to data from OpenAlex, Keisuke Kojima has authored 84 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Molecular Biology, 20 papers in Organic Chemistry and 10 papers in Plant Science. Recurrent topics in Keisuke Kojima's work include Natural product bioactivities and synthesis (8 papers), Phytochemical compounds biological activities (7 papers) and Catalytic C–H Functionalization Methods (6 papers). Keisuke Kojima is often cited by papers focused on Natural product bioactivities and synthesis (8 papers), Phytochemical compounds biological activities (7 papers) and Catalytic C–H Functionalization Methods (6 papers). Keisuke Kojima collaborates with scholars based in Japan, Mongolia and Oman. Keisuke Kojima's co-authors include Yukio Ogihara, Yoshinao Tamaru, Masanari Kimura, Hiroaki Furumai, Tomonori Kindaichi, Noriatsu Ozaki, Shuji Tanaka, Ondognii Purev, M Matsumoto and Hiroyuki Nagano and has published in prestigious journals such as Journal of the American Chemical Society, Journal of Biological Chemistry and Blood.

In The Last Decade

Keisuke Kojima

77 papers receiving 1.1k citations

Peers

Keisuke Kojima

PHARM

WST

Jan Masák Czechia

Zhou We China

Mohamad S. AlSalhi Saudi Arabia

Mukul Sharma Saudi Arabia

Ian H. Harding Australia

Evgenia Vasileva−Tonkova Bulgaria

Sumit Dey India

Hamid Moghimi Iran

Miao Liang China

K. Suthindhiran India

Jan Masák Czechia

Keisuke Kojima

111 ×0.3

581 ×2.1

143 ×0.8

42 ×0.3

PHARM

54 ×0.6

WST

Citations per year, relative to Keisuke Kojima Keisuke Kojima (= 1×) peers Jan Masák

Countries citing papers authored by Keisuke Kojima

Since Specialization

Citations

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

Fields of papers citing papers by Keisuke Kojima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keisuke Kojima

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

All Works

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20 of 20 papers shown

Kojima, Keisuke, et al.. (2024). Acute Stent Thrombosis Following Reprotrusion of a Calcified Nodule in the Left Main Coronary Artery. Catheterization and Cardiovascular Interventions. 105(2). 364–368. 1 indexed citations

Kojima, Keisuke, Naoki Sunagawa, Nils Mikkelsen, et al.. (2022). Comparison of glycoside hydrolase family 3 β-xylosidases from basidiomycetes and ascomycetes reveals evolutionarily distinct xylan degradation systems. Journal of Biological Chemistry. 298(3). 101670–101670. 6 indexed citations

Ogasawara, Reiki, Keisuke Kojima, Jun Nagai, et al.. (2021). New-onset Evans syndrome associated with systemic lupus erythematosus after BNT162b2 mRNA COVID-19 vaccination. International Journal of Hematology. 115(3). 424–427. 33 indexed citations

Ozaki, Noriatsu, Yoshihiro Takamura, Keisuke Kojima, & Tomonori Kindaichi. (2015). Loading and removal of PAHs in a wastewater treatment plant in a separated sewer system. Water Research. 80. 337–345. 60 indexed citations

Gao, Lei, Takashi Nishikata, Keisuke Kojima, Katsumi Chikama, & Hideo Nagashima. (2013). Water‐ and Organo‐Dispersible Gold Nanoparticles Supported by Using Ammonium Salts of Hyperbranched Polystyrene: Preparation and Catalysis. Chemistry - An Asian Journal. 8(12). 3152–3163. 11 indexed citations

Kojima, Keisuke, Katsumi Chikama, Makoto Ishikawa, et al.. (2012). Hydrophobicity/hydrophilicity tunable hyperbranched polystyrenes as novel supports for transition-metal nanoparticles. Chemical Communications. 48(86). 10666–10666. 16 indexed citations

Kojima, Keisuke, et al.. (2012). Propylamino-connected fluorescent terpyridine dimer and trimer: syntheses, photophysical properties and formation of duplex-type complexes with Cd(ii). Organic & Biomolecular Chemistry. 10(44). 8895–8895. 4 indexed citations

Kojima, Keisuke, Michio Murakami, Chikage Yoshimizu, et al.. (2011). Evaluation of surface runoff and road dust as sources of nitrogen using nitrate isotopic composition. Chemosphere. 84(11). 1716–1722. 34 indexed citations

Kimura, Masanari, et al.. (2006). Nickel catalyzed stereoselective conjugate addition of dimethylzinc upon aldimines across 1,3-dien-8-ynes and 1,3-dien-9-ynes. Chemical Communications. 2813–2813. 14 indexed citations

10.

Kojima, Keisuke, Masanari Kimura, & Yoshinao Tamaru. (2005). Nickel-catalyzed four-component connection of oraganoaluminium (organozinc), isoprene, aldehydes and amines: stereo- and regioselective synthesis of trisubstituted (E)-homoallylamines. Chemical Communications. 4717–4717. 24 indexed citations

11.

Ozaki, Noriatsu, et al.. (2005). Emission and dispersion of PAHs on atmospheric and aquatic environment. Environmental Engineering Research. 42. 1–8. 3 indexed citations

12.

Kojima, Keisuke, et al.. (2001). Cytotoxic activities of alkaloids from Zephyranthes carinata. Natural medicines = 生薬學雜誌. 55(4). 201–204. 5 indexed citations

13.

Kojima, Keisuke, et al.. (2001). ALKALOIDS FROM OXYTROPIS MYRIOPHYLLA (PALL) DC. Scientia Pharmaceutica. 69(4). 383–388. 7 indexed citations

14.

Kojima, Keisuke, et al.. (1998). Xanthones from Gentiana acuta(Natural Medicine Note). 52(1). 87. 1 indexed citations

15.

Saraçoğlu, İclal, Keisuke Kojima, Ü. Şebnem Harput, & Yukio Ogihara. (1998). A New Phenylethanoid Glycoside from Phlomis pungens WILLD. var. pungens.. Chemical and Pharmaceutical Bulletin. 46(4). 726–727. 32 indexed citations

16.

Kojima, Keisuke, et al.. (1998). Saponins from Gliricidia sepium. Phytochemistry. 48(5). 885–888. 14 indexed citations

17.

Mutsuga, Motoh, Keisuke Kojima, İclal Saraçoğlu, & Yukio OGIHARA. (1997). Minor Saponins from Tetrapanax papyriferum.. Chemical and Pharmaceutical Bulletin. 45(3). 552–554. 6 indexed citations

18.

Kojima, Keisuke, İclal Saraçoğlu, Motoh Mutsuga, & Yukio Ogihara. (1996). Triterpene Saponins from Tetrapanax papyriferum K. KOCH.. Chemical and Pharmaceutical Bulletin. 44(11). 2107–2110. 5 indexed citations

19.

Ito, Tatsuya, Keisuke Kojima, Kyoko Koizumi, Hideki Nagano, & T Nishino. (1994). Inhibitory Activity on DNA Gyrase and Intracellular Accumulation of Quinolones: Structure-Activity Relationship of Q-35 Analogs.. Biological and Pharmaceutical Bulletin. 17(7). 927–930. 9 indexed citations

20.

Kojima, Keisuke, T. Takeda, & Yasunari Ogihara. (1992). The nephritogenic glycopeptide from rat glomerular basement membrane. XI. Total synthesis of nephritogenoside.. Chemical and Pharmaceutical Bulletin. 40(1). 296–298. 3 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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