Masami Ohtsuka

1.2k total citations
27 papers, 945 citations indexed

About

Masami Ohtsuka is a scholar working on Organic Chemistry, Molecular Biology and Pharmacology. According to data from OpenAlex, Masami Ohtsuka has authored 27 papers receiving a total of 945 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Organic Chemistry, 12 papers in Molecular Biology and 8 papers in Pharmacology. Recurrent topics in Masami Ohtsuka's work include Carbohydrate Chemistry and Synthesis (9 papers), Antibiotic Resistance in Bacteria (6 papers) and Microbial Natural Products and Biosynthesis (4 papers). Masami Ohtsuka is often cited by papers focused on Carbohydrate Chemistry and Synthesis (9 papers), Antibiotic Resistance in Bacteria (6 papers) and Microbial Natural Products and Biosynthesis (4 papers). Masami Ohtsuka collaborates with scholars based in Japan, United States and Germany. Masami Ohtsuka's co-authors include Noritaka Chida, Seiichiro Ogawa, Kiyoshi Nakayama, William J. Watkins, Ving J. Lee, Kazuki Hoshino, Yoshihiro Yokomizo, Ken‐ichi Yoshida, Seiji Amano and Kumi Yoshida and has published in prestigious journals such as Chemical Communications, The Journal of Organic Chemistry and Tetrahedron.

In The Last Decade

Masami Ohtsuka

27 papers receiving 870 citations

Peers

Masami Ohtsuka

PHARM

Timothy A. Blizzard United States

Dennis D. Keith United States

Amit Nargotra India

Eric M. Flamme United States

SETSUO HARADA Japan

J. SCOTT WELLS Malaysia

Stephen W. Elson United States

C. M. CIMARUSTI Malaysia

W. A. SLUSARCHYK Malaysia

David T. Davies United Kingdom

Timothy A. Blizzard United States

Masami Ohtsuka

442 ×0.8

329 ×1.0

161 ×0.6

259 ×1.2

PHARM

112 ×0.8

PHARM

Citations per year, relative to Masami Ohtsuka Masami Ohtsuka (= 1×) peers Timothy A. Blizzard

Countries citing papers authored by Masami Ohtsuka

Since Specialization

Citations

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

Fields of papers citing papers by Masami Ohtsuka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masami Ohtsuka

This figure shows the co-authorship network connecting the top 25 collaborators of Masami Ohtsuka. A scholar is included among the top collaborators of Masami Ohtsuka 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 Masami Ohtsuka. Masami Ohtsuka 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

Ohtsuka, Masami, Hitoshi Ohki, Noriyasu Haginoya, et al.. (2012). Discovery of novel tricyclic compounds as squalene synthase inhibitors. Bioorganic & Medicinal Chemistry. 20(9). 3072–3093. 15 indexed citations

Yamakawa, Naoki, Hiroshi Watanabe, Ken‐ichiro Tanaka, et al.. (2012). Comparison of Pharmacokinetics between Loxoprofen and Its Derivative with Lower Ulcerogenic Activity, Fluoro-loxoprofen. Drug Metabolism and Pharmacokinetics. 28(2). 118–124. 15 indexed citations

Freeman, David, Julie A. Dixon, Akio Kakefuda, et al.. (2010). Welwitindolinone C synthetic studies. Construction of the welwitindolinone carbon skeleton via a transannular nitrone cycloaddition. Tetrahedron. 66(33). 6647–6655. 38 indexed citations

Yoshida, Ken‐ichi, Kiyoshi Nakayama, Masami Ohtsuka, et al.. (2007). MexAB-OprM specific efflux pump inhibitors in Pseudomonas aeruginosa. Part 7: Highly soluble and in vivo active quaternary ammonium analogue D13-9001, a potential preclinical candidate. Bioorganic & Medicinal Chemistry. 15(22). 7087–7097. 108 indexed citations

Yoshida, Ken‐ichi, Kiyoshi Nakayama, Yoshihiro Yokomizo, et al.. (2006). MexAB-OprM specific efflux pump inhibitors in Pseudomonas aeruginosa. Part 6: Exploration of aromatic substituents. Bioorganic & Medicinal Chemistry. 14(24). 8506–8518. 48 indexed citations

Yoshida, Ken‐ichi, Kiyoshi Nakayama, Shozo Kobayashi, et al.. (2005). MexAB-OprM specific efflux pump inhibitors in Pseudomonas aeruginosa. Part 5: Carbon-substituted analogues at the C-2 position. Bioorganic & Medicinal Chemistry. 14(6). 1993–2004. 40 indexed citations

Maruyama, Tokumi, et al.. (2005). Synthesis of purin-2-yl carboxylate from O6-methylguanosine. Nucleic Acids Symposium Series. 49(1). 109–110. 2 indexed citations

Nakayama, Kiyoshi, Masami Ohtsuka, Yoshihiro Yokomizo, et al.. (2004). MexAB-OprM specific efflux pump inhibitors in Pseudomonas aeruginosa. Part 4: Addressing the problem of poor stability due to photoisomerization of an acrylic acid moiety. Bioorganic & Medicinal Chemistry Letters. 14(10). 2493–2497. 43 indexed citations

Nakayama, Kiyoshi, Yohei Ishida, Masami Ohtsuka, et al.. (2003). MexAB-OprM-Specific efflux pump inhibitors in Pseudomonas aeruginosa. Part 1: Discovery and early strategies for lead optimization. Bioorganic & Medicinal Chemistry Letters. 13(23). 4201–4204. 66 indexed citations

10.

Nakayama, Kiyoshi, Yohei Ishida, Masami Ohtsuka, et al.. (2003). MexAB-OprM specific efflux pump inhibitors in Pseudomonas aeruginosa. Part 2: achieving activity in vivo through the use of alternative scaffolds. Bioorganic & Medicinal Chemistry Letters. 13(23). 4205–4208. 48 indexed citations

11.

Nakayama, Kiyoshi, Haruko C. Kawato, Jun Watanabe, et al.. (2003). MexAB-OprM specific efflux pump inhibitors in Pseudomonas aeruginosa. Part 3: Optimization of potency in the pyridopyrimidine series through the application of a pharmacophore model. Bioorganic & Medicinal Chemistry Letters. 14(2). 475–479. 55 indexed citations

12.

Amano, Seiji, et al.. (1999). Total synthesis of paniculide A from d-glucose. Tetrahedron. 55(13). 3855–3870. 32 indexed citations

13.

Amano, Seiji, Noriko Ogawa, Masami Ohtsuka, & Noritaka Chida. (1998). Total synthesis and absolute configuration of FR65814. Chemical Communications. 1263–1264. 9 indexed citations

14.

Chida, Noritaka, Makoto Jitsuoka, Yoshiyuki Yamamoto, Masami Ohtsuka, & Seiichiro Ogawa. (1996). Total Synthesis of (+)-7-Deoxypancratistatin and (+)-7-Deoxy-trans-dihydronarciclasine. Heterocycles. 43(7). 1385–1385. 42 indexed citations

15.

Chida, Noritaka, Masami Ohtsuka, Katsuyuki Ogura, & Seiichiro Ogawa. (1991). Synthesis of Optically Active Substituted Cyclohexenones from Carbohydrates by Catalytic Ferrier Rearrangement. Bulletin of the Chemical Society of Japan. 64(7). 2118–2121. 50 indexed citations

16.

Chida, Noritaka, Masami Ohtsuka, & Seiichiro Ogawa. (1991). Stereoselective total synthesis of (+)-lycoricidine. Tetrahedron Letters. 32(35). 4525–4528. 59 indexed citations

17.

Chida, Noritaka, et al.. (1990). Total Synthesis of Methoxyhygromycin and Its 5-Epimer. Chemistry Letters. 19(3). 423–426. 16 indexed citations

18.

Chida, Noritaka, et al.. (1989). Total synthesis of hygromycin A. Journal of the Chemical Society Chemical Communications. 436–436. 21 indexed citations

19.

Chida, Noritaka, Masami Ohtsuka, & Seiichiro Ogawa. (1988). Synthesis of 2-Acetoxy-4-formylphenyl 2,3-Di-O-acetyl-6-deoxy-β-d-arabino-5-hexulofuranoside, Structure Confirmation of the Anomeric Configuration of Antibiotic Hygromycin A. Chemistry Letters. 17(6). 969–972. 6 indexed citations

20.

Ohno, Masaji, et al.. (1986). Synthetic Studies on an Antitumor Antibiotic Bleomycin. A Synthetic Analogue Equivalent to Bleomycin in Activating Molecular Oxygen. Heterocycles. 24(1). 255–255. 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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