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Toshio Morikawa

Toshio Morikawa

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 79 3712 3368 212 198 284 16283

Toshio Morikawa publications per year

The chart shows the history of publications by Toshio Morikawa between 1975 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Toshio Morikawa published across 52 years, from 1975 to 2026, averaging 6.4 papers a year. Output peaked at 24 publications in 2003. 10 of the 332 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1975 to 2026. Vertical axis: number of publications, 0 to 24. Peak 24 publications in 2003. 1975: 2 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 0 publications 1988: 0 publications 1989: 0 publications 1990: 0 publications 1991: 0 publications 1992: 1 publication 1993: 0 publications 1994: 0 publications 1995: 0 publications 1996: 0 publications 1997: 3 publications 1998: 2 publications 1999: 2 publications 2000: 6 publications 2001: 16 publications 2002: 23 publications 2003: 24 publications 2004: 17 publications 2005: 12 publications 2006: 20 publications 2007: 23 publications 2008: 18 publications 2009: 16 publications 2010: 17 publications 2011: 5 publications 2012: 10 publications 2013: 6 publications 2014: 5 publications 2015: 6 publications 2016: 16 publications 2017: 7 publications 2018: 9 publications 2019: 4 publications 2020: 8 publications 2021: 12 publications 2022: 14 publications 2023: 11 publications 2024: 7 publications 2025: 9 publications 2026: 1 publication
1975 2026

332 publications in total across all disciplines

View publications per year as a table
Toshio Morikawa: publications per year, 1975 to 2026
Year Publications
1975 2
1976 0
1977 0
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 0
1986 0
1987 0
1988 0
1989 0
1990 0
1991 0
1992 1
1993 0
1994 0
1995 0
1996 0
1997 3
1998 2
1999 2
2000 6
2001 16
2002 23
2003 24
2004 17
2005 12
2006 20
2007 23
2008 18
2009 16
2010 17
2011 5
2012 10
2013 6
2014 5
2015 6
2016 16
2017 7
2018 9
2019 4
2020 8
2021 12
2022 14
2023 11
2024 7
2025 9
2026 1
Total 332
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Toshio Morikawa 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 Toshio Morikawa sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 281–300 publications, is where this scientist sits. 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
61–80 publications 1,295+

This scientist: 284 publications — 59th percentile

59% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939 284
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Toshio Morikawa 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 Toshio Morikawa sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 78–79 D-Index, is where this scientist sits. 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
40–41 D-Index 159+

This scientist: 79 D-Index — 80th percentile

80% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388 79
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Overview

Toshio Morikawa is affiliated with Kindai University in Japan and has contributed extensively to the fields of Biochemistry, Genetics, and Molecular Biology with a total of 55 publications. Their research also spans Medicine, contributing 52 publications. Their subfields of focus include Molecular Biology, Organic Chemistry, Biochemistry, Pharmacology, and Plant Science.

The research topics covered by Toshio Morikawa include:

  • Natural product bioactivities and synthesis
  • Natural Antidiabetic Agents Studies
  • Phytochemicals and Antioxidant Activities
  • Phytochemical compounds biological activities
  • Plant-derived Lignans Synthesis and Bioactivity
  • Traditional and Medicinal Uses of Annonaceae
  • Phytochemistry and Biological Activities

Selected recent papers authored by Toshio Morikawa are:

  • A review of antidiabetic active thiosugar sulfoniums, salacinol and neokotalanol, from plants of the genus Salacia, 2021, Journal of Natural Medicines
  • Geranylated Coumarins From Thai Medicinal Plant Mammea siamensis With Testosterone 5α-Reductase Inhibitory Activity, 2020, Frontiers in Chemistry
  • Collagen synthesis-promoting and collagenase inhibitory activities of constituents isolated from the rhizomes of Picrorhiza kurroa Royle ex Benth, 2020, Fitoterapia

Toshio Morikawa has published frequently in several scientific journals. The most prominent publication venues include:

  • Journal of Natural Medicines with 14 publications
  • International Journal of Molecular Sciences with 3 publications
  • HPB with 3 publications
  • Frontiers in Chemistry with 2 publications
  • Fitoterapia with 2 publications

Collaborative research partnerships are evident through frequent co-authors, comprising:

  • Yoshiaki Manse (28 joint publications)
  • Kiyofumi Ninomiya (15 joint publications)
  • Osamu Muraoka (15 joint publications)
  • Masayuki Yoshikawa (9 joint publications)
  • Shogo Takeda (8 joint publications)

Best Publications

  • Carnosic acid, a new class of lipid absorption inhibitor from sage

    Kiyofumi Ninomiya;Hisashi Matsuda;Hiroshi Shimoda;Norihisa Nishida

  • Absolute Stereostructure of Potent α-Glucosidase Inhibitor, Salacinol, with Unique Thiosugar Sulfonium Sulfate Inner Salt Structure from Salacia reticulata

    Masayuki Yoshikawa;Toshio Morikawa;Hisashi Matsuda;Genzoh Tanabe

  • Structural Requirements of Flavonoids and Related Compounds for Aldose Reductase Inhibitory Activity

    Hisashi Matsuda;Toshio Morikawa;Iwao Toguchida;Masayuki Yoshikawa

  • Structural requirements of flavonoids for nitric oxide production inhibitory activity and mechanism of action.

    Hisashi Matsuda;Toshio Morikawa;Shin Ando;Iwao Toguchida

  • Structural requirements of flavonoids for inhibition of antigen-Induced degranulation, TNF-α and IL-4 production from RBL-2H3 cells

    Hisashi Mastuda;Toshio Morikawa;Kazuho Ueda;Hiromi Managi

  • Inhibitory effect and action mechanism of sesquiterpenes from Zedoariae Rhizoma on D-galactosamine/lipopolysaccharide-induced liver injury.

    Hisashi Matsuda;Kiyofumi Ninomiya;Toshio Morikawa;Masayuki Yoshikawa

  • Antioxidant constituents from rhubarb: structural requirements of stilbenes for the activity and structures of two new anthraquinone glucosides.

    Hisashi Matsuda;Toshio Morikawa;Iwao Toguchida;Ji-Young Park

  • Structures of new dammarane-type Triterpene Saponins from the flower buds of Panax notoginseng and hepatoprotective effects of principal Ginseng Saponins.

    Masayuki Yoshikawa;Toshio Morikawa;Yousuke Kashima;Kiyofumi Ninomiya

  • New crinine-type alkaloids with inhibitory effect on induction of inducible nitric oxide synthase from Crinum yemense.

    Osama Bashir Abdel-Halim;Toshio Morikawa;Shin Ando;Hisashi Matsuda

  • Phytoestrogens from the roots of Polygonum cuspidatum (polygonaceae): structure-Requirement of hydroxyanthraquinones for estrogenic activity

    Hisashi Matsuda;Hiroshi Shimoda;Toshio Morikawa;Masayuki Yoshikawa

  • Effects of stilbene constituents from rhubarb on nitric oxide production in lipopolysaccharide-activated macrophages.

    Hisashi Matsuda;Tadashi Kageura;Toshio Morikawa;Iwao Toguchida

  • Medicinal flowers. VI. Absolute stereostructures of two new flavanone glycosides and a phenylbutanoid glycoside from the flowers of Chrysanthemum indicum L.: their inhibitory activities for rat lens aldose reductase.

    Hisashi Matsuda;Toshio Morikawa;Iwao Toguchida;Shoichi Harima

  • Anti-hyperlipidemic sesquiterpenes and new sesquiterpene glycosides from the leaves of artichoke (Cynara scolymus L.): structure requirement and mode of action.

    Hiroshi Shimoda;Kiyofumi Ninomiya;Norihisa Nishida;Tomoe Yoshino

  • Anti-allergic principles from Thai zedoary: structural requirements of curcuminoids for inhibition of degranulation and effect on the release of TNF-α and IL-4 in RBL-2H3 cells

    Hisashi Matsuda;Supinya Tewtrakul;Supinya Tewtrakul;Toshio Morikawa;Akihiko Nakamura

  • Gastroprotective effects of phenylpropanoids from the rhizomes of Alpinia galanga in rats: structural requirements and mode of action.

    Hisashi Matsuda;Yutana Pongpiriyadacha;Toshio Morikawa;Momotaro Ochi

  • Inhibitory effects of sesquiterpenes from bay leaf on nitric oxide production in lipopolysaccharide-activated macrophages: structure requirement and role of heat shock protein induction.

    Hisashi Matsuda;Tadashi Kagerura;Iwao Toguchida;Hiroki Ueda

  • Antidiabetogenic constituents from several natural medicines

    Hisashi Matsuda;Toshio Morikawa;Masayuki Yoshikawa

  • Medicinal flowers. XII.(1)) New spirostane-type steroid saponins with antidiabetogenic activity from Borassus flabellifer.

    Masayuki Yoshikawa;Fengming Xu;Toshio Morikawa;Toshio Morikawa;Yutana Pongpiriyadacha

  • Medicinal foodstuffs. XXVII. Saponin constituents of gotu kola (2): structures of new ursane- and oleanane-type triterpene oligoglycosides, centellasaponins B, C, and D, from Centella asiatica cultivated in Sri Lanka.

    Hisashi Matsuda;Toshio Morikawa;Hiroki Ueda;Masayuki Yoshikawa

  • Bioactive Saponins and Glycosides. Part 29

    Toshio Morikawa;Toshio Morikawa;Hisashi Matsuda;Ning Li;Ning Li;Xian Li

Frequent Co-Authors

Masayuki Yoshikawa
Masayuki Yoshikawa Kyoto Pharmaceutical University
Hisashi Matsuda
Hisashi Matsuda Kyoto Pharmaceutical University
Osamu Muraoka
Osamu Muraoka Kindai University
Seikou Nakamura
Seikou Nakamura Kyoto Pharmaceutical University
Toshiyuki Murakami
Toshiyuki Murakami Kyoto Pharmaceutical University
Hiroki R. Ueda
Hiroki R. Ueda University of Tokyo
Takao Hayakawa
Takao Hayakawa National Institutes of Health
Jinyi Xu
Jinyi Xu China Pharmaceutical University
Takashi Nakayama
Takashi Nakayama Kindai University
Ikuo Saiki
Ikuo Saiki University of Toyama

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