World's Best Scientists 2026 revealed!
Isao Shimizu

Isao Shimizu

D-Index & Metrics

Chemistry

D-Index
47
Citations
7345
World Ranking
15707
National Ranking
1236

Isao Shimizu publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Isao Shimizu sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 211 publications — 36th percentile

36% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Isao Shimizu D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Isao Shimizu sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 47 D-Index — 14th percentile

14% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

Isao Shimizu is a researcher affiliated with Waseda University in Japan. Their work spans several fields including Neuroscience, Biochemistry, Genetics and Molecular Biology, as well as Physics and Astronomy. The research focus covers subfields such as Cellular and Molecular Neuroscience, Molecular Biology, Pharmacology, Atomic and Molecular Physics, and Optics, as well as Biophysics.

Shimizu's research topics include Axon Guidance and Neuronal Signaling, Angiogenesis and VEGF in Cancer, Neuropeptides and Animal Physiology, Treatment of Major Depression, Neurotransmitter Receptor Influence on Behavior, Neuroscience and Neuropharmacology Research, and Digital Holography and Microscopy.

The scientist has published in a variety of journals, reflecting the multidisciplinary nature of their work. Frequent publication venues include:

  • International Journal of Molecular Sciences
  • Psychopharmacology
  • The European Physical Journal Applied Physics

Recent papers authored or co-authored by Shimizu include:

  • "Analysis of ADAM12-Mediated Ephrin-A1 Cleavage and Its Biological Functions," 2021, International Journal of Molecular Sciences
  • "DSP-6745, a novel 5-hydroxytryptamine modulator with rapid antidepressant, anxiolytic, antipsychotic and procognitive effects," 2024, Psychopharmacology
  • "Contrast-tuneable microscopy for single-shot real-time imaging," 2020, The European Physical Journal Applied Physics

Shimizu has collaborated frequently with several co-authors, including:

  • Katsuaki Ieguchi
  • Takeshi Tomita
  • Toshifumi Takao
  • Tsutomu Omori
  • Taishi Mishima

The diversity in Shimizu's research output demonstrates a blend of biological and physical sciences, focusing both on molecular mechanisms relevant to neuroscience and novel technological approaches such as microscopy methods.

Best Publications

  • Allylic carbonates. Efficient allylating agents of carbonucleophiles in palladium-catalyzed reactions under neutral conditions

    Jiro Tsuji;Isao Shimizu;Ichiro Minami;Yukihiro Ohashi

  • Palladium-catalyzed rearrangement of allylic esters of acetoacetic acid to give γ,δ-unsaturated methyl ketones

    Isao Shimizu;Toshiro Yamada;Jiro Tsuji

  • Palladium-catalyzed [3 + 2] cycloaddition reaction of vinylcyclopropanes with α,β-unsaturated esters or ketones

    Isao Shimizu;Yukihiro Ohashi;Jiro Tsuji

  • Novel palladium-catalyzed reactions of propargyl carbonates with carbonucleophiles under neutral conditions

    Jiro Tsuji;Hiroyuki Watanabe;Ichiro Minami;Isao Shimizu

  • Synthesis of trifluoromethyl ketones by palladium-catalyzed cross-coupling reaction of phenyl trifluoroacetate with organoboron compounds

    Ryuki Kakino;Isao Shimizu;Akio Yamamoto

  • Facile Palladium catalyzed decarboxylative allylation of active methylene compounds under neutral conditions using allylic carbonates

    Jiro Tsuji;Isao Shimizu;Ichiro Minami;Yukihiro Ohashi

  • Palladium-catalyzed allylation of ketones and aldehydes via allyl enol carbonates

    Jiro Tsuji;Ichiro Minami;Isao Shimizu

  • Palladium-catalyzed selective hydrogenolysis of alkenyloxiranes with formic acid. Stereoselectivity and synthetic utility

    Masato Oshima;Hiroyuki Yamazaki;Isao Shimizu;Mohammad Nisar

  • Reactions of allylic carbonates catalyzed by palladium, rhodium, ruthenium, molybdenum, and nickel complexes; allylation of carbonucleophiles and decarboxylation- dehydrogenation

    Ichiro Minami;Isao Shimizu;Jiro Tsuji

  • Synthesis of Unsymmetrical Ketones by Palladium-Catalyzed Cross-Coupling Reaction of Carboxylic Anhydrides with Organoboron Compounds

    Ryuki Kakino;Sayaka Yasumi;Isao Shimizu;Akio Yamamoto

  • Activation of C–O and C–N Bonds in Allylic Alcohols and Amines by Palladium Complexes Promoted by CO2. Synthetic Applications to Allylation of Nucleophiles, Carbonylation, and Allylamine Disproportionation

    Masato Sakamoto;Isao Shimizu;Akio Yamamoto

  • Palladium-catalyzed decarboxylation-allylation of allylic esters of α-substituted β-keto carboxylic, malonic, cyanoacetic, and nitroacetic acids

    Jiro Tsuji;Toshiro Yamada;Ichiro Minami;Masami Yuhara

  • New synthetic methods for α,β -unsaturated ketones, aldehydes, esters and lactones by the palladium-catalyzed reactions of silyl enol ethers, ketene silyl acetals, and enol acetates with allyl carbonates

    Ichiro Minami;Kazuhiko Takahashi;Isao Shimizu;Tsuneo Kimura

  • Palladium-catalyzed decarboxylation-dehydrogenation of allyl .beta.-oxo carboxylates and allyl enol carbonates as a novel synthetic method for .alpha.-substituted .alpha.,.beta.-unsaturated ketones

    Isao Shimizu;Jiro Tsuji

  • Convenient general synthetic method for 1,4- and 1,5-diketones by palladium catalyzed oxidation of α-allyl and α-3-butenyl ketones

    Jiro Tsuji;Isao Shimizu;Keiji Yamamoto

  • Palladium-Catalyzed Direct Conversion of Carboxylic Acids into Ketones with Organoboronic Acids Promoted by Anhydride Activators

    Ryuki Kakino;Hirohisa Narahashi;Isao Shimizu;Akio Yamamoto

  • Facile palladium-catalyzed decarboxylation reaction of allylic .beta.-keto esters

    Jiro Tsuji;Mohammad Nisar;Isao Shimizu

  • Allyation of carbonucleophiles with allylic carbonates under neutral conditions catalyzed by rhodium complexes

    Jiro Tsuji;Ichiro Minami;Isao Shimizu

  • Palladium-catalyzed reaction of allyl carbamates; allylation of carbonucleophiles, and protection-deprotection of amines

    Ichiro Minami;Yukihiro Ohashi;Isao Shimizu;Jiro Tsuji

  • Preparation of 1-Alkenes by the Palladium-Catalyzed Hydrogenolysis of Terminal Allylic Carbonates and Acetates with Formic Acid-Triethylamine

    Jiro Tsuji;Ichiro Minami;Isao Shimizu

  • Palladium-Catalyzed Cleavage of P-C Bonds in Quaternary Phosphonium Salts and Its Applications to Organic Synthesis

    Masato Sakamoto;Isao Shimizu;Akio Yamamoto

Frequent Co-Authors

Jiro Tsuji
Jiro Tsuji Tokyo Institute of Technology
Akio Yamamoto
Akio Yamamoto Waseda University
Toshio Kamiya
Toshio Kamiya Tokyo Institute of Technology
Fumiyuki Ozawa
Fumiyuki Ozawa Kyoto University
Takashi Takahashi
Takashi Takahashi Nagoya University

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