Shigenori Ohkawa

1.8k total citations
31 papers, 1.3k citations indexed

About

Shigenori Ohkawa is a scholar working on Organic Chemistry, Molecular Biology and Cellular and Molecular Neuroscience. According to data from OpenAlex, Shigenori Ohkawa has authored 31 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Organic Chemistry, 13 papers in Molecular Biology and 5 papers in Cellular and Molecular Neuroscience. Recurrent topics in Shigenori Ohkawa's work include Circadian rhythm and melatonin (5 papers), Receptor Mechanisms and Signaling (5 papers) and Pharmacological Receptor Mechanisms and Effects (4 papers). Shigenori Ohkawa is often cited by papers focused on Circadian rhythm and melatonin (5 papers), Receptor Mechanisms and Signaling (5 papers) and Pharmacological Receptor Mechanisms and Effects (4 papers). Shigenori Ohkawa collaborates with scholars based in Japan, United States and Croatia. Shigenori Ohkawa's co-authors include Masaomi Miyamoto, Keisuke Hirai, K. Fukatsu, Osamu Uchikawa, Shuji Hinuma, Koki Kato, Hisao Nishikawa, Zen‐ichi Terashita, Yuji Kawamata and Keiji Nishiyama and has published in prestigious journals such as Journal of Biological Chemistry, Brain Research and Biochemical and Biophysical Research Communications.

In The Last Decade

Shigenori Ohkawa

30 papers receiving 1.2k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Shigenori Ohkawa Japan 18 451 337 307 295 249 31 1.3k
Shigeru Tokita Japan 21 856 1.9× 255 0.8× 637 2.1× 629 2.1× 435 1.7× 74 2.2k
Gina Jerome United States 18 217 0.5× 335 1.0× 336 1.1× 332 1.1× 238 1.0× 24 1.7k
Michael W. Scherz United States 15 387 0.9× 128 0.4× 431 1.4× 357 1.2× 366 1.5× 25 1.1k
Sridhar R. Vasudevan United Kingdom 19 309 0.7× 168 0.5× 107 0.3× 367 1.2× 97 0.4× 38 1.6k
Hisashi Iwaasa Japan 26 966 2.1× 204 0.6× 376 1.2× 728 2.5× 166 0.7× 55 2.1k
Sonal P. Sanghani United States 14 252 0.6× 51 0.2× 282 0.9× 414 1.4× 200 0.8× 15 1.3k
D. Esposti Italy 19 544 1.2× 64 0.2× 122 0.4× 286 1.0× 74 0.3× 30 1.3k
Frank Brown United Kingdom 15 140 0.3× 357 1.1× 145 0.5× 399 1.4× 88 0.4× 30 1.0k
Irmgard Wiesenberg Switzerland 17 898 2.0× 194 0.6× 92 0.3× 584 2.0× 40 0.2× 26 1.7k
Romano Di Fabio Italy 24 142 0.3× 900 2.7× 117 0.4× 609 2.1× 79 0.3× 104 1.7k

Countries citing papers authored by Shigenori Ohkawa

Since Specialization
Citations

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

Fields of papers citing papers by Shigenori Ohkawa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Shigenori Ohkawa

This figure shows the co-authorship network connecting the top 25 collaborators of Shigenori Ohkawa. A scholar is included among the top collaborators of Shigenori Ohkawa 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 Shigenori Ohkawa. Shigenori Ohkawa 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.
Yamashita, Masayuki, et al.. (2006). Approach to the stereoselective synthesis of melatonin receptor agonist Ramelteon via asymmetric hydrogenation. Tetrahedron Asymmetry. 17(2). 184–190. 17 indexed citations
2.
Kato, Koki, Keisuke Hirai, Keiji Nishiyama, et al.. (2004). Neurochemical properties of ramelteon (TAK-375), a selective MT1/MT2 receptor agonist. Neuropharmacology. 48(2). 301–310. 304 indexed citations
3.
Miyamoto, Masaomi, et al.. (2004). The Sleep-Promoting Action of Ramelteon (TAK-375) in Freely Moving Cats. SLEEP. 27(7). 1319–1325. 62 indexed citations
4.
Nishikawa, Hisao, et al.. (2004). Effects of ramelteon (TAK-375) on nocturnal sleep in freely moving monkeys. Brain Research. 1027(1-2). 59–66. 54 indexed citations
5.
Tarui, Naoki, et al.. (2002). Kinetic Resolutions of Indan Derivatives Using Bacteria. Bioscience Biotechnology and Biochemistry. 66(2). 464–466. 6 indexed citations
6.
Tarui, Naoki, Takeshi Sakane, Mitsuru Kawada, et al.. (2002). Kinetic resolution of an indan derivative using Bacillus sp. SUI-12: Synthesis of a key intermediate of the melatonin receptor agonist TAK-375. Journal of Bioscience and Bioengineering. 93(1). 44–47. 4 indexed citations
7.
Murakami, Megumi, et al.. (2000). ESR Study on the Antioxidant Activity of TAK-218 in Biological Model Membranes.. Chemical and Pharmaceutical Bulletin. 48(6). 784–792. 5 indexed citations
8.
Fukatsu, K., et al.. (1999). Synthesis of TAK-218 using (R)-2-methylglycidyl tosylate as a chiral building block. Tetrahedron Asymmetry. 10(8). 1521–1526. 5 indexed citations
9.
Ohkawa, Shigenori & Philip S. Portoghese. (1998). 7-Arylidenenaltrexones as Selective δ1 Opioid Receptor Antagonists. Journal of Medicinal Chemistry. 41(21). 4177–4180. 12 indexed citations
10.
Ohkawa, Shigenori, K. Fukatsu, Tadatoshi Hashimoto, et al.. (1997). 5-Aminocoumarans:  Dual Inhibitors of Lipid Peroxidation and Dopamine Release with Protective Effects against Central Nervous System Trauma and Ischemia. Journal of Medicinal Chemistry. 40(4). 559–573. 53 indexed citations
11.
Portoghese, Philip S., Shigenori Ohkawa, Scott T. Moe, & A.E. Takemori. (1994). Synthesis and .delta.-Opioid Receptor Antagonist Activity of a Naltrindole Analog with a Regioisomeric Indole Moiety. Journal of Medicinal Chemistry. 37(12). 1886–1888. 5 indexed citations
12.
Ohkuni, Hisashi, Yuko Todome, Hisanori Suzuki, et al.. (1993). Biologically active extracellular products of oral viridans streptococci and the aetiology of Kawasaki disease. Journal of Medical Microbiology. 39(5). 352–362. 21 indexed citations
13.
Ohkawa, Shigenori, et al.. (1992). Interaction between endothelium-derived relaxing factors, S-nitrosothiols, and endothelin-1 on Ca2+ mobilization in rat vascular smooth muscle cells. Biochemical and Biophysical Research Communications. 183(2). 849–855. 13 indexed citations
14.
Shibouta, Yumiko, Zen‐ichi Terashita, Yoshimi Imura, et al.. (1991). Involvement of thromboxane A2, leukotrienes and free radicals in puromycin nephrosis in rats. Kidney International. 39(5). 920–929. 20 indexed citations
15.
Ohkawa, Shigenori, Shuji Terao, Zen‐ichi Terashita, Yumiko Shibouta, & Ken Nishikawa. (1991). Dual inhibitors of thromboxane A2 synthase and 5-lipoxygenase with scavenging activity of active oxygen species (AOS). Synthesis of a novel series of (3-pyridylmethyl)benzoquinone derivatives. Journal of Medicinal Chemistry. 34(1). 267–276. 42 indexed citations
16.
Terao, Shinji, Shigenori Ohkawa, Zen‐ichi Terashita, Yumiko Shibouta, & Kohei Nishikawa. (1991). Synthesis and biological evaluation of 2,3,5-trimethyl-6-(3-pyridylmethyl)-1,4-benzoquinone (CV-6504), a dual inhibitor of TXA2 synthase and 5-lipoxygenase with scavenging activity of active oxygen species (AOS).. PubMed. 21A. 173–6. 1 indexed citations
17.
Ohkawa, Shigenori, et al.. (1991). Reduction of 2,3,5-trimethyl-6-(3-pyridylmethyl)-1,4-benzoquinone by PB-3c cells and biological activity of its hydroquinone.. Chemical and Pharmaceutical Bulletin. 39(4). 917–921. 9 indexed citations
18.
Ohishi, N, Takashi Izumi, Masabumi Minami, et al.. (1987). Leukotriene A4 hydrolase in the human lung. Inactivation of the enzyme with leukotriene A4 isomers.. Journal of Biological Chemistry. 262(21). 10200–10205. 75 indexed citations
19.
Kato, Keita, Shigenori Ohkawa, Shinji Terao, Zen‐ichi Terashita, & Kohei Nishikawa. (1985). ChemInform Abstract: THROMBOXANE SYNTHETASE INHIBITORS (TXSI). DESIGN, SYNTHESIS, AND EVALUATION OF A NOVEL SERIES OF Ω‐PYRIDYLALKENOIC ACIDS. Chemischer Informationsdienst. 16(32). 7 indexed citations
20.
Kato, Kaneyoshi, Shigenori Ohkawa, Shinji Terao, Zen‐ichi Terashita, & Kohei Nishikawa. (1985). Thromboxane synthetase inhibitors (TXSI). Design, synthesis, and evaluation of a novel series of .omega.-pyridylalkenoic acids. Journal of Medicinal Chemistry. 28(3). 287–294. 82 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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