Kei-Ichi Fujisawa

827 total citations
36 papers, 604 citations indexed

About

Kei-Ichi Fujisawa is a scholar working on Pharmacology, Molecular Biology and Organic Chemistry. According to data from OpenAlex, Kei-Ichi Fujisawa has authored 36 papers receiving a total of 604 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Pharmacology, 17 papers in Molecular Biology and 9 papers in Organic Chemistry. Recurrent topics in Kei-Ichi Fujisawa's work include Microbial Natural Products and Biosynthesis (16 papers), Essential Oils and Antimicrobial Activity (5 papers) and Glycosylation and Glycoproteins Research (4 papers). Kei-Ichi Fujisawa is often cited by papers focused on Microbial Natural Products and Biosynthesis (16 papers), Essential Oils and Antimicrobial Activity (5 papers) and Glycosylation and Glycoproteins Research (4 papers). Kei-Ichi Fujisawa collaborates with scholars based in United Kingdom and Japan. Kei-Ichi Fujisawa's co-authors include Hiroshi Kawaguchi, Susumu Nakagawa, TAKAYUKI NAITÔ, Hiroshi Tsukiura, Hideo Koshiyama, Takeo Miyaki, Koji Tomita, Shoei ISEKI, MASATAKA KONISHI and SOICHIRO TODA and has published in prestigious journals such as Tetrahedron Letters, The Journal of Antibiotics and PubMed.

In The Last Decade

Kei-Ichi Fujisawa

36 papers receiving 513 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Kei-Ichi Fujisawa United Kingdom 13 299 261 195 114 51 36 604
Ryo Okachi Japan 14 409 1.4× 327 1.3× 250 1.3× 93 0.8× 37 0.7× 56 720
Jerry R. Martin United Kingdom 16 378 1.3× 292 1.1× 351 1.8× 85 0.7× 60 1.2× 53 754
Giancarlo Lancini Italy 19 476 1.6× 339 1.3× 280 1.4× 83 0.7× 118 2.3× 48 988
J. BLUMBACH India 14 306 1.0× 289 1.1× 416 2.1× 73 0.6× 54 1.1× 24 801
J. SCOTT WELLS Malaysia 18 401 1.3× 345 1.3× 234 1.2× 163 1.4× 37 0.7× 28 873
S. B. Zimmerman United States 12 268 0.9× 307 1.2× 137 0.7× 161 1.4× 36 0.7× 18 546
HARUO YAMAMOTO Japan 14 286 1.0× 213 0.8× 192 1.0× 81 0.7× 49 1.0× 30 535
Pacifico A. Principe Malaysia 14 346 1.2× 328 1.3× 231 1.2× 146 1.3× 26 0.5× 21 792
C. Coronelli Italy 15 329 1.1× 382 1.5× 203 1.0× 44 0.4× 107 2.1× 25 777
MIKAO MAYAMA Japan 14 285 1.0× 258 1.0× 160 0.8× 94 0.8× 27 0.5× 35 571

Countries citing papers authored by Kei-Ichi Fujisawa

Since Specialization
Citations

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

Fields of papers citing papers by Kei-Ichi Fujisawa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kei-Ichi Fujisawa. 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 Kei-Ichi Fujisawa. The network helps show where Kei-Ichi Fujisawa may publish in the future.

Co-authorship network of co-authors of Kei-Ichi Fujisawa

This figure shows the co-authorship network connecting the top 25 collaborators of Kei-Ichi Fujisawa. A scholar is included among the top collaborators of Kei-Ichi Fujisawa 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 Kei-Ichi Fujisawa. Kei-Ichi Fujisawa 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.
KONISHI, MASATAKA, Koko Sugawara, Koji Tomita, et al.. (1983). Bu-2470, a new peptide antibiotic complex. I. Production, isolation and properties of Bu-2470 A, B1 and B2.. The Journal of Antibiotics. 36(6). 625–633. 9 indexed citations
2.
Tsukiura, Hiroshi, Koji Tomita, Minoru Hanada, et al.. (1980). Bu-2313, a new antibiotic complex active against anaerobes. I. Production, isolation and properties of Bu-2313 A and B.. The Journal of Antibiotics. 33(2). 157–165. 19 indexed citations
3.
Nakagawa, Susumu, et al.. (1977). Aminoglycoside antibiotics. XI. Synthesis and activity of 4'-deoxykanamycin B.. The Journal of Antibiotics. 30(11). 1004–1007. 4 indexed citations
4.
Tomita, Koji, et al.. (1976). Sorbistin, a new aminoglycoside antibiotic complex of bacterial origin. II. Isolation and taxonomy of sorbistin-producing organism.. The Journal of Antibiotics. 29(11). 1147–1151. 5 indexed citations
5.
Tsukiura, Hiroshi, Minoru Hanada, Kei-Ichi Fujisawa, et al.. (1976). Sorbistin, a new aminoglycoside antibiotic complex of bacterial origin. I. Production, isolation and properties.. The Journal of Antibiotics. 29(11). 1137–1146. 16 indexed citations
6.
Fujisawa, Kei-Ichi, et al.. (1974). AMINOGLYCOSIDE ANTIBIOTICS. VII. The Journal of Antibiotics. 27(9). 677–681. 24 indexed citations
7.
NAITÔ, TAKAYUKI, Susumu Nakagawa, Yukio Narita, et al.. (1974). Aminoglycoside antibiotics. IX. Structure-activity relationship in 1-N-acyl derivatives of kanamycin A (amikacin analogs).. The Journal of Antibiotics. 27(11). 851–858. 12 indexed citations
8.
Fujisawa, Kei-Ichi, MASATAKA KONISHI, Kei-Ichi Numata, et al.. (1973). AMINOGLYCOSIDE ANTIBIOTICS. III. The Journal of Antibiotics. 26(6). 351–357. 14 indexed citations
9.
NAITÔ, TAKAYUKI, Susumu Nakagawa, SOICHIRO TODA, et al.. (1973). AMINOGLYCOSIDE ANTIBIOTICS. II.. The Journal of Antibiotics. 26(5). 297–301. 17 indexed citations
10.
Kawaguchi, Hiroshi, TAKAYUKI NAITÔ, Susumu Nakagawa, & Kei-Ichi Fujisawa. (1972). BB-K8, A NEW SEMISYNTHETIC AMINOGLYCOSIDE ANTIBIOTIC. The Journal of Antibiotics. 25(12). 695–708. 253 indexed citations
11.
Tsukiura, Hiroshi, et al.. (1969). STUDIES ON CIRRAMYCIN A1. IV. The Journal of Antibiotics. 22(3). 100–105. 2 indexed citations
12.
Fujisawa, Kei-Ichi, et al.. (1969). STUDIES ON CIRRAMYCIN A1. II. The Journal of Antibiotics. 22(2). 65–70. 3 indexed citations
13.
NAITÔ, TAKAYUKI, et al.. (1968). SYNTHESIS OF 6-AMINOPENICILLANIC ACID DERIVATIVES. III1). The Journal of Antibiotics. 21(4). 290–299. 5 indexed citations
14.
NAITÔ, TAKAYUKI, Susumu Nakagawa, Kiyoshi Takahashi, Kei-Ichi Fujisawa, & Hiroshi Kawaguchi. (1968). SYNTHESIS OF 6-AMINOPENICILLANIC ACID DERIVATIVES. IV. The Journal of Antibiotics. 21(4). 300–305. 2 indexed citations
15.
Takahashi, Kazuo, et al.. (1968). Synthesis of 6-aminopenicillanic acid derivatives. V. Synthesis and activity of 3-aryl-4-isothiazolylpenicillins.. PubMed. 8. 94–100. 8 indexed citations
16.
Fujisawa, Kei-Ichi, et al.. (1963). STUDIES ON A AND B BLOOD GROUP SUBSTANCES OF HUMAN ERYTHROCYTES BY BLOOD GROUP SPECIFIC ENZYMES.. Kitakantou igaku. 13(1). 19–39. 1 indexed citations
17.
Fujisawa, Kei-Ichi, et al.. (1963). Chemical Effects of A- and B-Decomposing Enzymes on Blood Group Substances from Red Cells. Proceedings of the Japan Academy. 39(5). 319–324. 13 indexed citations
18.
Fujisawa, Kei-Ichi, et al.. (1963). STUDIES ON O(H) BLOOD GROUP SUBSTANCES OF HUMAN ERYTHROCYTES BY BLOOD GROUP SPECIFIC ENZYMES. Kitakantou igaku. 13(5). 269–278. 3 indexed citations
19.
Furukawa, Ken, Kei-Ichi Fujisawa, & Shoei ISEKI. (1962). An Enzyme Decomposing Common Antigenic Substance between Blood Group Substance and Diplococcus pneumoniae Type XIV. I. Proceedings of the Japan Academy. 38(7). 371–376. 9 indexed citations
20.
ISEKI, Shoei, et al.. (1961). Immunochemical Studies on Phage-mediated Antigens in Shigella flexneri.. Proceedings of the Japan Academy. 37(10). 651–654. 1 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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