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Masami Ishibashi

Masami Ishibashi

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 66 7351 6663 482 453 435 14352

Masami Ishibashi publications per year

The chart shows the history of publications by Masami Ishibashi between 1968 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Masami Ishibashi published across 58 years, from 1968 to 2025, averaging 8.1 papers a year. Output peaked at 24 publications in 1991. 10 of the 467 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1968 to 2025. Vertical axis: number of publications, 0 to 24. Peak 24 publications in 1991. 1968: 1 publication 1969: 0 publications 1970: 0 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 2 publications 1982: 4 publications 1983: 4 publications 1984: 6 publications 1985: 4 publications 1986: 2 publications 1987: 8 publications 1988: 6 publications 1989: 6 publications 1990: 9 publications 1991: 24 publications 1992: 16 publications 1993: 18 publications 1994: 13 publications 1995: 14 publications 1996: 7 publications 1997: 6 publications 1998: 8 publications 1999: 10 publications 2000: 6 publications 2001: 8 publications 2002: 7 publications 2003: 18 publications 2004: 12 publications 2005: 11 publications 2006: 17 publications 2007: 17 publications 2008: 13 publications 2009: 16 publications 2010: 18 publications 2011: 17 publications 2012: 10 publications 2013: 6 publications 2014: 15 publications 2015: 16 publications 2016: 14 publications 2017: 15 publications 2018: 12 publications 2019: 8 publications 2020: 6 publications 2021: 9 publications 2022: 12 publications 2023: 6 publications 2024: 4 publications 2025: 6 publications
1968 2025

467 publications in total across all disciplines

View publications per year as a table
Masami Ishibashi: publications per year, 1968 to 2025
Year Publications
1968 1
1969 0
1970 0
1971 0
1972 0
1973 0
1974 0
1975 0
1976 0
1977 0
1978 0
1979 0
1980 0
1981 2
1982 4
1983 4
1984 6
1985 4
1986 2
1987 8
1988 6
1989 6
1990 9
1991 24
1992 16
1993 18
1994 13
1995 14
1996 7
1997 6
1998 8
1999 10
2000 6
2001 8
2002 7
2003 18
2004 12
2005 11
2006 17
2007 17
2008 13
2009 16
2010 18
2011 17
2012 10
2013 6
2014 15
2015 16
2016 14
2017 15
2018 12
2019 8
2020 6
2021 9
2022 12
2023 6
2024 4
2025 6
Total 467
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Masami Ishibashi 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 Masami Ishibashi 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, 421–440 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: 435 publications — 84th percentile

84% 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
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327 435
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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Masami Ishibashi 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 Masami Ishibashi 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, 66–67 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: 66 D-Index — 60th percentile

60% 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 66
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

Masami Ishibashi is a researcher affiliated with Chiba University in Japan, focusing on medical and biochemical sciences. Their work spans several fields, including Medicine and Biochemistry, Genetics and Molecular Biology, with notable contributions in molecular biology, pharmacology, and microbiology as subfields of expertise.

The scientist's research interests cover a range of topics centered on natural products and their biological activities. Key themes include microbial natural products and biosynthesis, actinomycetales infections and treatment, infectious diseases and mycology, as well as the biological activities of phytochemical compounds. Additional areas of work address natural product bioactivities and synthesis, alkaloids synthesis and pharmacology, and chemical synthesis related to alkaloids.

Masami Ishibashi has authored multiple research papers, with recent publications illustrating a focus on cardiovascular disease biomarkers, natural compound evaluation, and microbial bioactive substances. Selected recent papers include:

  • "Gut Microbiota and Coronary Plaque Characteristics," 2022, Journal of the American Heart Association
  • "Biomarkers associated with coronary high-risk plaques," 2022, Journal of Thrombosis and Thrombolysis
  • "Evaluation of Naturally Occurring HIF-1 Inhibitors for Pulmonary Arterial Hypertension," 2021, ChemBioChem
  • "Two Bioactive Compounds, Uniformides A and B, Isolated from a Culture of Nocardia uniformis IFM0856T in the Presence of Animal Cells," 2022, Organic Letters
  • "Isolation and evaluation of cardenolides from Lansium domesticum as Notch inhibitors," 2020, Journal of Natural Medicines

Their publications are frequently found in journals such as the Journal of Natural Medicines, The Journal of Antibiotics, Scientific Reports, Organic Letters, and Heterocycles.

Masami Ishibashi collaborates regularly with a group of co-authors, including Yasumasa Hara, Midori A. Arai, Teruhisa Manome, Akiko Takaya, and Firoj Ahmed. These collaborators have contributed significantly to numerous joint research projects, exemplifying a cooperative research environment.

Best Publications

  • Bioactive metabolites of symbiotic marine microorganisms

    Junichi. Kobayashi;Masami. Ishibashi

  • Separation of Leucas aspera, a medicinal plant of Bangladesh, guided by prostaglandin inhibitory and antioxidant activities.

    Samir Kumar Sadhu;Emi Okuyama;Haruhiro Fujimoto;Masami Ishibashi

  • Scytophycins, cytotoxic and antimycotic agents from the cyanophyte Scytonema pseudohofmanni

    Masami Ishibashi;Richard E. Moore;Gregory M. L. Patterson;Changfu Xu

  • Purealidins B and C, new bromotyrosine alkaloids from the okinawan marine sponge psammaplysilla purea

    Jun'ichi Kobayashi;Masashi Tsuda;Kaori Agemi;Hideyuki Shigemori

  • Ircinals A and B from the Okinawan marine sponge Ircinia sp.: plausible biogenetic precursors of manzamine alkaloids

    Kazuhiko Kondo;Hideyuki Shigemori;Yumiko Kikuchi;Masami Ishibashi

  • Occurrence of 9-deoxy-delta 9,delta 12-13,14-dihydroprostaglandin D2 in human urine.

    Y. Hirata;H. Hayashi;S. Ito;Y. Kikawa

  • Analgesic components of saposhnikovia root (Saposhnikovia divaricata).

    Emi Okuyama;Tetsuya Hasegawa;Takamitsu Matsushita;Haruhiro Fujimoto

  • MANZACIDINS A-C, NOVEL TETRAHYDROPYRIMIDINE ALKALOIDS FROM THE OKINAWAN MARINE SPONGE HYMENIACIDON SP.

    Junichi Kobayashi;Fuyuko Kanda;Masami Ishibashi;Hideyuki Shigemori

  • Ageliferins, potent actomyosin Atpase activators from the Okinawan marine sponge sp

    Jun'ichi Kobayashi;Masashi Tsuda;Tetsuya Murayama;Hideshi Nakamura

  • Naturally occurring small-molecule inhibitors of hedgehog/GLI-mediated transcription.

    Takahiro Hosoya;Midori A. Arai;Takashi Koyano;Thaworn Kowithayakorn

  • Amphidinolide C: The first 25-membered macrocyclic lactone with potent antineoplastic activity from the cultured dinoflagellate Amphidinium sp.

    Junichi. Kobayashi;Masami. Ishibashi;Markus R. Walchli;Hideshi. Nakamura

  • Penaresidin A and B, two novel azetidine alkaloids with potent actomyosin ATPase-activating activity from the Okinawan marine sponge Penares sp.

    Jun'ichi Kobayashi;Jie-Fei Cheng;Masami Ishibashi;Markus R. Wälchli

  • AMPHIDINOLIDES : UNIQUE MACROLIDES FROM MARINE DINOFLAGELLATES

    Masami Ishibashi;Jun'ichi Kobayashi

  • Prianosin A, a novel antileukemic alkaloid from the okinawan marine sponge Prianos melanos

    Jun'ichi Kobayashi;Jie-fei Cheng;Masami Ishibashi;Hideshi Nakamura

  • Antioxidant, antinociceptive activity and general toxicity study of Dendrophthoe falcata and isolation of quercitrin as the major component

    Shihab Hasan;Iqbal Ahmed;Sukla Mondal;Mohammad Methedi Masud

  • Six immunosuppressive features from an ascomycete, Zopfiella longicaudata, found in a screening study monitored by immunomodulatory activity.

    Haruhiro Fujimoto;Etsuko Nakamura;Emi Okuyama;Masami Ishibashi

  • Hyrtiosins A and B, new indole alkaloids from the Okinawan marine sponge Hyrtios erecta

    Jun'ichi Kobayashi;Tetsuya Murayama;Tetsuya Murayama;Masami Ishibashi;Sumiko Kosuge;Sumiko Kosuge

  • Amphidinolide-A, a novel antineoplastic macrolide from the marine dinoflagellate Amphidinium sp.

    Jun'ichi Kobayashi;Masami Ishibashi;Hideshi Nakamura;Yasushi Ohizumi

  • Regulation of mammalian neural development by helix-loop-helix transcription factors.

    Kageyama R;Sasai Y;Akazawa C;Ishibashi M

  • Lignan glycosides and flavonoids from Saraca asoca with antioxidant activity

    Samir Kumar Sadhu;Samir Kumar Sadhu;Amina Khatun;Panadda Phattanawasin;Æ Takashi Ohtsuki

  • Catalytic Asymmetric Synthesis of Mixed 3,3′‐Bisindoles and Their Evaluation as Wnt Signaling Inhibitors

    Takayoshi Arai;Yushi Yamamoto;Atsuko Awata;Kentaro Kamiya

Frequent Co-Authors

Jun'ichi Kobayashi
Jun'ichi Kobayashi Hokkaido University
Yasushi Ohizumi
Yasushi Ohizumi Tohoku University
Hideyuki Shigemori
Hideyuki Shigemori University of Tsukuba
Masashi Tsuda
Masashi Tsuda Kōchi University
Hideshi Nakamura
Hideshi Nakamura Nagoya University
Hiroshi Hirota
Hiroshi Hirota Nihon University
Yuzuru Mikami
Yuzuru Mikami Chiba University
Yoichi Iitaka
Yoichi Iitaka University of Tokyo
Yoshimasa Hirata
Yoshimasa Hirata Meijo University
Satoshi Omura
Satoshi Omura Kitasato University

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