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Hayato Ishikawa

Hayato Ishikawa

Kumamoto University
Japan

D-Index & Metrics

Chemistry

D-Index
45
Citations
7851
World Ranking
16391
National Ranking
1292

Hayato Ishikawa 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 Hayato Ishikawa 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: 143 publications — 12th percentile

12% of scientists in this discipline score the same or lower.

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

Hayato Ishikawa 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 Hayato Ishikawa 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: 45 D-Index — 10th percentile

10% of scientists in this discipline score the same or lower.

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

Overview

Hayato Ishikawa is affiliated with Kumamoto University in Japan. Their research spans the fields of Biochemistry, Genetics and Molecular Biology, and Chemistry, with significant contributions to Pharmacology, Organic Chemistry, Molecular Biology, Materials Chemistry, and Biochemistry as specialized subfields.

The main topics of research addressed in Ishikawa's work include:

  • Alkaloids: synthesis and pharmacology
  • Traditional and Medicinal Uses of Annonaceae
  • Chemical synthesis and alkaloids
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Natural product bioactivities and synthesis
  • Microbial Natural Products and Biosynthesis

Frequently published venues for Ishikawa's work include:

  • The Cambridge Structural Database
  • Chemistry - A European Journal
  • Chemical and Pharmaceutical Bulletin
  • Journal of Synthetic Organic Chemistry Japan
  • Organic Letters

Frequent coauthors collaborating with Ishikawa are:

  • Mariko Kitajima
  • Jukiya Sakamoto
  • Kenta Rakumitsu
  • Lia Dewi Juliawaty
  • Shinichiro Sawa

Selected papers published by Hayato Ishikawa include:

  • Total Syntheses of (−)-Strictosidine and Related Indole Alkaloid Glycosides, 2020, Angewandte Chemie International Edition
  • Root-knot nematode chemotaxis is positively regulated by l-galactose sidechains of mucilage carbohydrate rhamnogalacturonan-I, 2021, Science Advances
  • 5,6-Dihydro-α-pyrones from the leaves of Cryptocarya pulchinervia (Lauraceae), 2020, Journal of Natural Medicines
  • Bioinspired Transformations Using Strictosidine Aglycones: Divergent Total Syntheses of Monoterpenoid Indole Alkaloids in the Early Stage of Biosynthesis, 2021, Chemistry - A European Journal
  • Epoxyquinophomopsins A and B from endophytic fungus Phomopsis sp. and their activity against tyrosine kinase, 2020, Journal of Natural Medicines

Best Publications

  • High‐Yielding Synthesis of the Anti‐Influenza Neuramidase Inhibitor (−)‐Oseltamivir by Three “One‐Pot” Operations

    Hayato Ishikawa;Takaki Suzuki;Yujiro Hayashi

  • Total synthesis of vinblastine, vincristine, related natural products, and key structural analogues.

    Hayato Ishikawa;David A. Colby;Shigeki Seto;Porino Va

  • Studies on the synthesis and opioid agonistic activities of mitragynine-related indole alkaloids: discovery of opioid agonists structurally different from other opioid ligands.

    Hiromitsu Takayama;Hayato Ishikawa;Mika Kurihara;Mariko Kitajima

  • Asymmetric Michael Reaction of Acetaldehyde Catalyzed by Diphenylprolinol Silyl Ether

    Yujiro Hayashi;Takahiko Itoh;Masahiro Ohkubo;Hayato Ishikawa

  • Diphenylprolinol Silyl Ether as Catalyst of an Asymmetric, Catalytic, and Direct Michael Reaction of Nitroalkanes with α,β-Unsaturated Aldehydes

    Hiroaki Gotoh;Hayato Ishikawa;Yujiro Hayashi

  • Asymmetric aldol reaction of acetaldehyde and isatin derivatives for the total syntheses of ent-convolutamydine E and CPC-1 and a half fragment of madindoline A and B.

    Takahiko Itoh;Hayato Ishikawa;Yujiro Hayashi

  • Antinociceptive effect of 7-hydroxymitragynine in mice: Discovery of an orally active opioid analgesic from the Thai medicinal herb Mitragyna speciosa.

    Kenjiro Matsumoto;Syunji Horie;Hayato Ishikawa;Hiromitsu Takayama

  • A diarylprolinol in an asymmetric, catalytic, and direct crossed-aldol reaction of acetaldehyde.

    Yujiro Hayashi;Takahiko Itoh;Seiji Aratake;Hayato Ishikawa

  • Organocatalyzed Michael Addition of Aldehydes to Nitro Alkenes – Generally Accepted Mechanism Revisited and Revised

    Krystyna Patora-Komisarska;Krystyna Patora-Komisarska;Meryem Benohoud;Hayato Ishikawa;Dieter Seebach

  • Total synthesis of (-)- and ent-(+)-vindoline and related alkaloids

    Hayato Ishikawa;Gregory I. Elliott;Juraj Velcicky;Younggi Choi

  • Direct Coupling of Catharanthine and Vindoline to Provide Vinblastine: Total Synthesis of (+)- and ent-(−)-Vinblastine

    Hayato Ishikawa;David A. Colby;Dale L. Boger

  • Asymmetric Diels–Alder Reactions of α,β‐Unsaturated Aldehydes Catalyzed by a Diarylprolinol Silyl Ether Salt in the Presence of Water

    Yujiro Hayashi;Sampak Samanta;Hiroaki Gotoh;Hayato Ishikawa

  • Oxidative and enantioselective cross-coupling of aldehydes and nitromethane catalyzed by diphenylprolinol silyl ether.

    Yujiro Hayashi;Takahiko Itoh;Hayato Ishikawa

  • High‐Yielding Synthesis of the Anti‐Influenza Neuraminidase Inhibitor (−)‐Oseltamivir by Two “One‐Pot” Sequences

    Hayato Ishikawa;Takaki Suzuki;Hideo Orita;Tadafumi Uchimaru

  • One-Pot High-Yielding Synthesis of the DPP4-Selective Inhibitor ABT-341 by a Four-Component Coupling Mediated by a Diphenylprolinol Silyl Ether†

    Hayato Ishikawa;Masakazu Honma;Yujiro Hayashi

  • Total Synthesis of (−)- and ent-(+)-Vindoline

    Younggi Choi;Hayato Ishikawa;Juraj Velcicky;Gregory I. Elliott

  • Dimerization of indole derivatives with hypervalent iodines(III): a new entry for the concise total synthesis of rac- and meso-chimonanthines

    Hayato Ishikawa;Hiromitsu Takayama;Norio Aimi

  • Direct organocatalytic mannich reaction of acetaldehyde: an improved catalyst and mechanistic insight from a computational study.

    Yujiro Hayashi;Tsubasa Okano;Takahiko Itoh;Tatsuya Urushima

  • Antinociception, tolerance and withdrawal symptoms induced by 7-hydroxymitragynine, an alkaloid from the Thai medicinal herb Mitragyna speciosa.

    Kenjiro Matsumoto;Syunji Horie;Syunji Horie;Hiromitsu Takayama;Hayato Ishikawa

  • Diphenylprolinol silyl ether catalysis in an asymmetric formal carbo [3 + 3] cycloaddition reaction via a domino Michael/Knoevenagel condensation.

    Yujiro Hayashi;Maya Toyoshima;Hiroaki Gotoh;Hayato Ishikawa

  • Intramolecular diels-alder/1,3-dipolar cycloaddition cascade of 1,3,4-oxadiazoles.

    Gregory I. Elliott;James R. Fuchs;Brian S. J. Blagg;Hayato Ishikawa

Frequent Co-Authors

Yujiro Hayashi
Yujiro Hayashi Tohoku University
Dale L. Boger
Dale L. Boger Scripps Research Institute
Hiromitsu Takayama
Hiromitsu Takayama Chiba University
Hiroyuki Koshino
Hiroyuki Koshino Tokyo University of Agriculture
Mariko Kitajima
Mariko Kitajima Chiba University
Shinichiro Sawa
Shinichiro Sawa Kumamoto University
Hideaki Kakeya
Hideaki Kakeya Kyoto University
Sachiko Tsukamoto
Sachiko Tsukamoto Kumamoto University
Daisuke Hashizume
Daisuke Hashizume RIKEN
Brian S. J. Blagg
Brian S. J. Blagg University of Notre Dame

External Links

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Best Scientists Citing Hayato Ishikawa

Yujiro Hayashi

Yujiro Hayashi

Tohoku University

Publications: 51

Karl Anker Jørgensen

Karl Anker Jørgensen

Aarhus University

Publications: 44

Dale L. Boger

Dale L. Boger

Scripps Research Institute

Publications: 39

Wei Wang

Wei Wang

East China University of Science and Technology

Publications: 33

Keiji Maruoka

Keiji Maruoka

Kyoto University

Publications: 24

Ying‐Chun Chen

Ying‐Chun Chen

Sichuan University

Publications: 19

Hiromitsu Takayama

Hiromitsu Takayama

Chiba University

Publications: 18

Ferenc Fülöp

Ferenc Fülöp

University of Szeged

Publications: 15

Mohammad Movassaghi

Mohammad Movassaghi

MIT

Publications: 14

Mariko Kitajima

Mariko Kitajima

Chiba University

Publications: 13

Miquel A. Pericàs

Miquel A. Pericàs

University of Barcelona

Publications: 13

Xiaoming Feng

Xiaoming Feng

Sichuan University

Publications: 12

Paolo Melchiorre

Paolo Melchiorre

Royal Society of Chemistry

Publications: 12

Phil S. Baran

Phil S. Baran

Scripps Research Institute

Publications: 12

Helma Wennemers

Helma Wennemers

ETH Zurich

Publications: 11

Masakatsu Shibasaki

Masakatsu Shibasaki

University of Tokyo

Publications: 11

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