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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 49 14961 13479 1167 1059 239 7382

Seikou Nakamura publications per year

The chart shows the history of publications by Seikou Nakamura between 1967 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Seikou Nakamura published across 59 years, from 1967 to 2025, averaging 4.5 papers a year. Output peaked at 30 publications in 2007. 8 of the 266 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1967 to 2025. Vertical axis: number of publications, 0 to 30. Peak 30 publications in 2007. 1967: 1 publication 1968: 0 publications 1969: 0 publications 1970: 0 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 1 publication 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 1 publication 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: 0 publications 1993: 0 publications 1994: 1 publication 1995: 0 publications 1996: 0 publications 1997: 0 publications 1998: 0 publications 1999: 1 publication 2000: 3 publications 2001: 4 publications 2002: 3 publications 2003: 3 publications 2004: 1 publication 2005: 2 publications 2006: 9 publications 2007: 30 publications 2008: 26 publications 2009: 28 publications 2010: 15 publications 2011: 10 publications 2012: 10 publications 2013: 11 publications 2014: 10 publications 2015: 12 publications 2016: 12 publications 2017: 12 publications 2018: 10 publications 2019: 8 publications 2020: 9 publications 2021: 8 publications 2022: 5 publications 2023: 12 publications 2024: 3 publications 2025: 5 publications
1967 2025

266 publications in total across all disciplines

View publications per year as a table
Seikou Nakamura: publications per year, 1967 to 2025
Year Publications
1967 1
1968 0
1969 0
1970 0
1971 0
1972 0
1973 0
1974 1
1975 0
1976 0
1977 0
1978 0
1979 1
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 0
1993 0
1994 1
1995 0
1996 0
1997 0
1998 0
1999 1
2000 3
2001 4
2002 3
2003 3
2004 1
2005 2
2006 9
2007 30
2008 26
2009 28
2010 15
2011 10
2012 10
2013 11
2014 10
2015 12
2016 12
2017 12
2018 10
2019 8
2020 9
2021 8
2022 5
2023 12
2024 3
2025 5
Total 266
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Seikou Nakamura 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 Seikou Nakamura 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, 221–240 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: 239 publications — 46th percentile

46% 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 1,216 239
241–260 1,100
261–280 979
281–300 939
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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Seikou Nakamura 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 Seikou Nakamura 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, 48–49 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: 49 D-Index — 19th percentile

19% 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 49
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
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

Seikou Nakamura is affiliated with Kyoto Pharmaceutical University in Japan, contributing extensively to research in the fields of Biochemistry, Genetics and Molecular Biology, Medicine, and Agricultural and Biological Sciences. Their work encompasses several subfields such as Molecular Biology, Pharmacology, Plant Science, Organic Chemistry, and Cancer Research.

The scientist's research includes a focus on natural product bioactivities and synthesis, phytochemical compounds' biological activities, garlic and onion studies, fungal plant pathogen control, berberine and alkaloids research, genomics related to phytochemicals and oxidative stress, and cholinesterase involvement in neurodegenerative diseases.

Frequent publication outlets for their work include the Journal of Natural Medicines, Chemical and Pharmaceutical Bulletin, Heterocycles, Biological and Pharmaceutical Bulletin, and Organic & Biomolecular Chemistry.

Recent notable papers authored or coauthored by Seikou Nakamura include:

  • Inhibitory effects of cynaropicrin and related sesquiterpene lactones from leaves of artichoke (Cynara scolymus L.) on induction of iNOS in RAW264.7 cells and its high-affinity proteins, 2021, Journal of Natural Medicines
  • Effects of Sanoshashinto on left ventricular hypertrophy and gut microbiota in spontaneously hypertensive rats, 2020, Journal of Natural Medicines
  • Construction of sulfur-containing compounds with anti-cancer stem cell activity using thioacrolein derived from garlic based on nature-inspired scaffolds, 2021, Organic & Biomolecular Chemistry
  • Antihypertensive constituents in Sanoshashinto, 2020, Journal of Natural Medicines
  • Structures of Cyclic Organosulfur Compounds From Garlic (Allium sativum L.) Leaves, 2020, Frontiers in Chemistry

Seikou Nakamura frequently collaborates with several researchers, including:

  • Hisashi Matsuda
  • Souichi Nakashima
  • Takahiro Matsumoto
  • Taichi Yoneda
  • Tomoe Ohta

Best Publications

  • Antitumor Agents. 239. Isolation, structure elucidation, total synthesis, and anti-breast cancer activity of neo-tanshinlactone from Salvia miltiorrhiza.

    Xihong Wang;Kenneth F. Bastow;Chang Ming Sun;Yun Lian Lin

  • 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

  • New type of anti-diabetic compounds from the processed leaves of Hydrangea macrophylla var. thunbergii (Hydrangeae Dulcis Folium).

    Hailong Zhang;Hisashi Matsuda;Akira Kumahara;Yuki Ito

  • Suppressive effects of methoxyflavonoids isolated from Kaempferia parviflora on inducible nitric oxide synthase (iNOS) expression in RAW 264.7 cells.

    Chutha Sae-Wong;Hisashi Matsuda;Supinya Tewtrakul;Pimpimon Tansakul

  • Melanogenesis inhibitors from the rhizomes of Alpinia officinarum in B16 melanoma cells.

    Hisashi Matsuda;Souichi Nakashima;Yoshimi Oda;Seikou Nakamura

  • Phenylethanoid oligoglycosides and acylated oligosugars with vasorelaxant activity from Cistanche tubulosa.

    Masayuki Yoshikawa;Hisashi Matsuda;Toshio Morikawa;Toshio Morikawa;Haihui Xie

  • Melanogenesis inhibitors from the desert plant Anastatica hierochuntica in B16 melanoma cells.

    Souichi Nakashima;Hisashi Matsuda;Yoshimi Oda;Seikou Nakamura

  • Alkaloid constituents from flower buds and leaves of sacred lotus (Nelumbo nucifera, Nymphaeaceae) with melanogenesis inhibitory activity in B16 melanoma cells

    Seikou Nakamura;Souichi Nakashima;Genzo Tanabe;Yoshimi Oda

  • Structures of new cucurbitane-type triterpenes and glycosides, karavilagenins and karavilosides, from the dried fruit of Momordica charantia L. in Sri Lanka.

    Seikou Nakamura;Toshiyuki Murakami;Junko Nakamura;Hisanori Kobayashi

  • Structures of steroidal alkaloid oligoglycosides, robeneosides A and B, and antidiabetogenic constituents from the Brazilian medicinal plant Solanum lycocarpum.

    Masayuki Yoshikawa;Seikou Nakamura;Kenichi Ozaki;Akira Kumahara

  • Salaprionol and Ponkoranol with Thiosugar Sulfonium Sulfate Structure from Salacia prinoides and a-Glucosidase Inhibitory Activity of Ponkoranol and Kotalanol Desulfate

    Masayuki Yoshikawa;Fengming Xu;Seikou Nakamura;Tao Wang

  • Dehydrozingerone, chalcone, and isoeugenol analogues as in vitro anticancer agents.

    Jin Tatsuzaki;Kenneth F. Bastow;Kyoko Nakagawa-Goto;Seiko Nakamura

  • Medicinal Flowers. XVII. New Dammarane-Type Triterpene Glycosides from Flower Buds of American Ginseng, Panax quinquefolium L.

    Seikou Nakamura;Sachiko Sugimoto;Hisashi Matsuda;Masayuki Yoshikawa

  • Medicinal flowers. XIV. New acylated oleanane-type triterpene oligoglycosides with antiallergic activity from flower buds of chinese tea plant (Camellia sinensis).

    Masayuki Yoshikawa;Seikou Nakamura;Yasuyo Kato;Koudai Matsuhira

  • Medicinal flowers. XI. Structures of new dammarane-type triterpene diglycosides with hydroperoxide group from flower buds of Panax ginseng.

    Masayuki Yoshikawa;Sachiko Sugimoto;Seikou Nakamura;Hisashi Matsuda

  • Bioactive constituents from Chinese natural medicines. XXVI. Chemical structures and hepatoprotective effects of constituents from roots of Rhodiola sachalinensis.

    Seikou Nakamura;Xuezheng Li;Hisashi Matsuda;Kiyofumi Ninomiya

  • Bioactive saponins and glycosides. XXVII. Structures of new cucurbitane-type triterpene glycosides and antiallergic constituents from Citrullus colocynthis.

    Masayuki Yoshikawa;Toshio Morikawa;Toshio Morikawa;Hisanori Kobayashi;Akihiko Nakamura

  • Mate Tea (Ilex paraguariensis) Promotes Satiety and Body Weight Lowering in Mice: Involvement of Glucagon-Like Peptide-1

    Ghazi Mohamed Eisa Hussein;Hisashi Matsuda;Seikou Nakamura;Makoto Hamao

  • Bioactive Constituents from Chinese Natural Medicines. XXVIII. Chemical Structures of Acyclic Alcohol Glycosides from the Roots of Rhodiola crenulata

    Seikou Nakamura;Xuezheng Li;Hisashi Matsuda;Masayuki Yoshikawa

  • Hydrangeic acid from the processed leaves of Hydrangea macrophylla var. thunbergii as a new type of anti-diabetic compound.

    Hailong Zhang;Hisashi Matsuda;Chihiro Yamashita;Seikou Nakamura

  • Cancer preventive agents, Part 2: Synthesis and evaluation of 2-phenyl-4-quinolone and 9-oxo-9,10-dihydroacridine derivatives as novel antitumor promoters

    Seikou Nakamura;Mutsuo Kozuka;Kenneth F. Bastow;Harukuni Tokuda

Frequent Co-Authors

Hisashi Matsuda
Hisashi Matsuda Kyoto Pharmaceutical University
Masayuki Yoshikawa
Masayuki Yoshikawa Kyoto Pharmaceutical University
Toshio Morikawa
Toshio Morikawa Kindai University
Osamu Muraoka
Osamu Muraoka Kindai University
Paul W. Paré
Paul W. Paré Texas Tech University
Jiang Liu
Jiang Liu Sichuan Agricultural University
Toshiyuki Murakami
Toshiyuki Murakami Kyoto Pharmaceutical University
Yoshiyasu Fukuyama
Yoshiyasu Fukuyama Tokushima Bunri University
Thomas Efferth
Thomas Efferth Johannes Gutenberg University of Mainz
Eishi Ashihara
Eishi Ashihara Kyoto Pharmaceutical University

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