TOMIZO NIWA

507 total citations
14 papers, 387 citations indexed

About

TOMIZO NIWA is a scholar working on Organic Chemistry, Molecular Biology and Pharmacology. According to data from OpenAlex, TOMIZO NIWA has authored 14 papers receiving a total of 387 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Organic Chemistry, 5 papers in Molecular Biology and 4 papers in Pharmacology. Recurrent topics in TOMIZO NIWA's work include Carbohydrate Chemistry and Synthesis (4 papers), Microbial Natural Products and Biosynthesis (3 papers) and Synthesis of β-Lactam Compounds (3 papers). TOMIZO NIWA is often cited by papers focused on Carbohydrate Chemistry and Synthesis (4 papers), Microbial Natural Products and Biosynthesis (3 papers) and Synthesis of β-Lactam Compounds (3 papers). TOMIZO NIWA collaborates with scholars based in United Kingdom and Japan. TOMIZO NIWA's co-authors include TARO NIIDA, Takashi Tsuruoka, Shigeharu Inouye, Norio Ezaki, TAKASHI SHOMURA, Yoshio Kodama, M. Koyama, Tatsuo Ito, Yujiro Yamada and Michio Kojima and has published in prestigious journals such as The Journal of Biochemistry, The Journal of Antibiotics and Agricultural and Biological Chemistry.

In The Last Decade

TOMIZO NIWA

14 papers receiving 354 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
TOMIZO NIWA United Kingdom 11 212 197 127 66 50 14 387
Hermann Führer Switzerland 14 207 1.0× 232 1.2× 145 1.1× 43 0.7× 25 0.5× 29 430
Ronald R. Rasmussen United Kingdom 13 238 1.1× 259 1.3× 185 1.5× 57 0.9× 30 0.6× 21 488
Ryosaku Nomi Japan 12 342 1.6× 105 0.5× 189 1.5× 37 0.6× 50 1.0× 56 539
Chi-Huey Wong United States 9 343 1.6× 252 1.3× 62 0.5× 49 0.7× 48 1.0× 9 453
C. A. Claridge United States 10 187 0.9× 85 0.4× 114 0.9× 30 0.5× 42 0.8× 20 324
TAISUKE INAGAKI Japan 12 216 1.0× 232 1.2× 249 2.0× 76 1.2× 61 1.2× 23 539
KIYOSHI HAMANO United States 14 210 1.0× 89 0.5× 193 1.5× 103 1.6× 51 1.0× 26 390
Norman N. Durham United States 14 255 1.2× 152 0.8× 75 0.6× 44 0.7× 33 0.7× 58 525
Toshio Konomi Japan 9 242 1.1× 144 0.7× 308 2.4× 48 0.7× 41 0.8× 12 464
J. A. Mabe United States 13 300 1.4× 140 0.7× 204 1.6× 55 0.8× 93 1.9× 25 534

Countries citing papers authored by TOMIZO NIWA

Since Specialization
Citations

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

Fields of papers citing papers by TOMIZO NIWA

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of TOMIZO NIWA

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

All Works

14 of 14 papers shown
1.
NIWA, TOMIZO, Takashi Yoshida, Atsushi Tamura, et al.. (1986). In vitro evaluation of SF-2103A, A novel carbapenem antibiotic, as a .BETA.-lactamase inhibitor.. The Journal of Antibiotics. 39(7). 943–955. 2 indexed citations
2.
Kodama, Yoshio, Takashi Tsuruoka, TOMIZO NIWA, & Shigeharu Inouye. (1985). Molecular structure and glycosidase-inhibitory activity of nojirimycin bisulfite adduct.. The Journal of Antibiotics. 38(1). 116–118. 15 indexed citations
3.
NIWA, TOMIZO, Takashi Tsuruoka, Yoshio Kodama, et al.. (1984). Novel glycosidase inhibitors, nojirimycin B and D-mannonic-.DELTA.-lactam. Isolation, structure determination and biological property.. The Journal of Antibiotics. 37(12). 1579–1586. 59 indexed citations
4.
Ito, Tatsuo, M. Koyama, Masaji Sezaki, et al.. (1984). A new antiviral antibiotic SF-2140 produced by Actinomadura.. The Journal of Antibiotics. 37(8). 931–934. 19 indexed citations
5.
Inouye, Shigeharu, Michio Kojima, TAKASHI SHOMURA, et al.. (1983). Discovery,isolation and structure of novel cephamycins of Streptomyces chartreusis.. The Journal of Antibiotics. 36(2). 115–124. 8 indexed citations
6.
Ito, Tatsuo, Norio Ezaki, SHOICHI AMANO, et al.. (1982). A novel .BETA.-lactamase inhibitor, SF-2103 a produced by a Streptomyces.. The Journal of Antibiotics. 35(4). 533–535. 15 indexed citations
7.
Ezaki, Norio, TAKASHI SHOMURA, M. Koyama, et al.. (1981). New chlorinated nitro-pyrrole antibiotics, Pyrrolomycin A and B SE-2080 A and B.. The Journal of Antibiotics. 34(10). 1363–1365. 33 indexed citations
8.
Koyama, M., Yoshio Kodama, Takashi Tsuruoka, et al.. (1981). Structure and synthesis of pyrrolomycin A. a chlorinated nitro-pyrrole antibiotic.. The Journal of Antibiotics. 34(12). 1569–1576. 33 indexed citations
9.
SHOMURA, TAKASHI, Michio Kojima, Junko Yoshida, et al.. (1980). Studies on a new aminoglycoside antibiotic, dactimicin. I. Producing organism and fermentation.. The Journal of Antibiotics. 33(9). 924–930. 30 indexed citations
10.
Hidaka, Hisashi, et al.. (1978). . Journal of the Japanese Society of Starch Science. 25(2). 148–154. 6 indexed citations
11.
NIWA, TOMIZO, et al.. (1972). A New Potent β-Glucuronidase Inhibitor, D-Glucaro-δ-lactam Derived from Nojirimycin. The Journal of Biochemistry. 72(1). 207–211. 30 indexed citations
12.
SHOMURA, TAKASHI, et al.. (1970). STUDIES ON ANTIBIOTIC SF-733, A NEW ANTIBIOTIC. I. The Journal of Antibiotics. 23(3). 155–161. 28 indexed citations
13.
NIWA, TOMIZO, et al.. (1970). “Nojirimycin” as a Potent Inhibitor of Glucosidase. Agricultural and Biological Chemistry. 34(6). 966–968. 93 indexed citations
14.
Tsuruoka, Takashi, et al.. (1968). SF-701, A NEW STREPTOTHRIGIN-LIKE ANTIBIOTIC. The Journal of Antibiotics. 21(3). 237–238. 16 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Hermann Führer Breakdown of academic impact, for papers by Ronald R. Rasmussen Breakdown of academic impact, for papers by Ryosaku Nomi Breakdown of academic impact, for papers by Chi-Huey Wong Breakdown of academic impact, for papers by C. A. Claridge Breakdown of academic impact, for papers by TAISUKE INAGAKI Breakdown of academic impact, for papers by KIYOSHI HAMANO Breakdown of academic impact, for papers by Norman N. Durham Breakdown of academic impact, for papers by Toshio Konomi Breakdown of academic impact, for papers by J. A. Mabe
Rankless by CCL
2026