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Motomasa Kobayashi

Motomasa Kobayashi

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 64 8216 7459 552 516 281 11330

Motomasa Kobayashi publications per year

The chart shows the history of publications by Motomasa Kobayashi between 1966 and 2019, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Motomasa Kobayashi published across 54 years, from 1966 to 2019, averaging 5.3 papers a year. Output peaked at 17 publications in 2001. 2 of the 284 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1966 to 2019. Vertical axis: number of publications, 0 to 17. Peak 17 publications in 2001. 1966: 1 publication 1967: 0 publications 1968: 0 publications 1969: 0 publications 1970: 0 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 1 publication 1976: 0 publications 1977: 1 publication 1978: 3 publications 1979: 1 publication 1980: 1 publication 1981: 7 publications 1982: 4 publications 1983: 4 publications 1984: 5 publications 1985: 7 publications 1986: 4 publications 1987: 7 publications 1988: 2 publications 1989: 9 publications 1990: 4 publications 1991: 7 publications 1992: 8 publications 1993: 6 publications 1994: 11 publications 1995: 9 publications 1996: 11 publications 1997: 15 publications 1998: 12 publications 1999: 6 publications 2000: 10 publications 2001: 17 publications 2002: 8 publications 2003: 10 publications 2004: 11 publications 2005: 6 publications 2006: 11 publications 2007: 9 publications 2008: 6 publications 2009: 4 publications 2010: 6 publications 2011: 11 publications 2012: 7 publications 2013: 2 publications 2014: 5 publications 2015: 3 publications 2016: 6 publications 2017: 4 publications 2018: 0 publications 2019: 2 publications
1966 2019

284 publications in total across all disciplines

View publications per year as a table
Motomasa Kobayashi: publications per year, 1966 to 2019
Year Publications
1966 1
1967 0
1968 0
1969 0
1970 0
1971 0
1972 0
1973 0
1974 0
1975 1
1976 0
1977 1
1978 3
1979 1
1980 1
1981 7
1982 4
1983 4
1984 5
1985 7
1986 4
1987 7
1988 2
1989 9
1990 4
1991 7
1992 8
1993 6
1994 11
1995 9
1996 11
1997 15
1998 12
1999 6
2000 10
2001 17
2002 8
2003 10
2004 11
2005 6
2006 11
2007 9
2008 6
2009 4
2010 6
2011 11
2012 7
2013 2
2014 5
2015 3
2016 6
2017 4
2018 0
2019 2
Total 284
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Motomasa Kobayashi 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 Motomasa Kobayashi 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: 281 publications — 58th percentile

58% 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
281–300 939 281
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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Motomasa Kobayashi 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 Motomasa Kobayashi 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, 64–65 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: 64 D-Index — 56th percentile

56% 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 64
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

Motomasa Kobayashi is affiliated with Osaka University in Japan, where they conduct their research activities. Their work is situated within the academic environment of this institution, contributing to its scientific output and research community.

There is no publicly available detailed record of specific papers authored by Motomasa Kobayashi, nor is there information on frequent collaboration with other researchers. Likewise, no data on preferred publication venues or book publications is accessible. Consequently, there is no enumerated list of frequent co-authors or publishers related to their academic output.

Similarly, detailed information on the main fields of study, subfields, and the principal topics addressed in their research has not been provided. This limits the ability to outline particular research domains or thematic areas that characterize their scholarly contributions.

Information regarding awards or formal recognitions received by Motomasa Kobayashi is not available, which does not allow for commentary on distinctions or honors within their academic career.

Best Publications

  • Cortistatins A, B, C, and D, Anti-angiogenic Steroidal Alkaloids, from the Marine Sponge Corticium simplex

    Shunji Aoki;Yasuo Watanabe;Mami Sanagawa;Andi Setiawan

  • Marine natural products. XXXIV. Trisindoline, a new antibiotic indole trimer, produced by a bacterium of Vibrio sp. separated from the marine sponge Hyrtios altum.

    Motomasa Kobayashi;Shunji Aoki;Katsuhiko Gato;Katsuyoshi Matsunami

  • Altohyrtin A, a potent anti-tumor macrolide from the Okinawan marine sponge Hyrtios altum

    Motomasa Kobayashi;Shunji Aoki;Haruhiko Sakai;Kazuyoshi Kawazoe

  • Trichoderins, novel aminolipopeptides from a marine sponge-derived Trichoderma sp., are active against dormant mycobacteria.

    Patamaporn Pruksakorn;Masayoshi Arai;Naoyuki Kotoku;Catherine Vilchèze

  • Inhibition of in vitro tumor cell invasion by ginsenoside Rg3.

    Kiyoko Shinkai;Hitoshi Akedo;Mutsuko Mukai;Fumio Imamura

  • Absolute stereostructure of swinholide A, a potent cytotoxic macrolide from the Okinawan marine sponge Theonella swinhoei

    Isao Kitagawa;Motomasa Kobayashi;Taketo Katori;Megumi Yamashita

  • ARENASTATIN A, A POTENT CYTOTOXIC DEPSIPEPTIDE FROM THE OKINAWAN MARINE SPONGE DYSIDEA ARENARIA

    Motomasa Kobayashi;Shunji Aoki;Naoki Ohyabu;Michio Kurosu

  • Nociceptin/orphanin FQ-induced nociceptive responses through substance P release from peripheral nerve endings in mice

    Makoto Inoue;Motomasa Kobayashi;Shunji Kozaki;Andreas Zimmer

  • Marine Natural Products. XII. On the Chemical Constituents of the Okinawan Marine Sponge Hymeniacidon aldis

    Isao Kitagawa;Motomasa Kobayashi;Kaneyuki Kitanaka;Masaru Kido

  • Absolute stereostructures of altohyrtin A and its congeners, potent cytotoxic macrolides from the Okinawan marine sponge hyrtios altum

    Motomasa Kobayashi;Shunji Aoki;Isao Kitagawa

  • Structure-activity relationship and biological property of cortistatins, anti-angiogenic spongean steroidal alkaloids.

    Shunji Aoki;Yasuo Watanabe;Daiki Tanabe;Masayoshi Arai

  • Cytotoxic sesterterpenes, 6-epi-ophiobolin G and 6-epi-ophiobolin N, from marine derived fungus Emericella variecolor GF10

    Hong Wei;Takuya Itoh;Masahiro Kinoshita;Yasuhide Nakai

  • Callystatin A, a potent cytotoxic polyketide from the marine sponge, Callyspongia truncata

    Motomasa Kobayashi;Kouichi Higuchi;Nobutoshi Murakami;Hisashi Tajima

  • Cortistatins E, F, G, and H, four novel steroidal alkaloids from marine sponge Corticium simplex

    Yasuo Watanabe;Shunji Aoki;Daiki Tanabe;Andi Setiawan

  • Altohyrtins B and C and 5-desacetylaltohyrtin A, potent cytotoxic macrolide congeners of altohyrtin A, from the Okinawan marine sponge Hyrtios altum.

    Motomasa Kobayashi;Shunji Aoki;Haruhiko Sakai;Noriaki Kihara

  • Cortistatins J, K, L, novel abeo-9(10-19)-androstane-type steroidal alkaloids with isoquinoline unit, from marine sponge Corticium simplex

    Shunji Aoki;Yasuo Watanabe;Daiki Tanabe;Andi Setiawan

  • Melophlins A and B, Novel Tetramic Acids Reversing the Phenotype of ras-Transformed Cells, from the Marine Sponge Melophlus sarassinorum

    Shunji Aoki;Kouichi Higuchi;Ying Ye;Rachmaniar Satari

  • Structure of swinholide A, a potent cytotoxic macrolide from the Okinawan marine sponge

    Motomasa Kobayashi;Jun-ichi Tanaka;Taketo Katori;Miki Matsuura

  • Reversal of the resistance to STI571 in human chronic myelogenous leukemia K562 cells

    Motoi Mukai;Xiao Fang Che;Tatsuhiko Furukawa;Tomoyuki Sumizawa

  • Molecular conformation of swinholide A, a potent cytotoxic dimeric macrolide from the Okinawan marine sponge Theonella swinhoei: x-ray crystal structure of its diketone derivative

    Mitsunobu Doi;Toshimasa Ishida;Motomasa Kobayashi;Isao Kitagawa

Frequent Co-Authors

Isao Kitagawa
Isao Kitagawa Osaka University
Shunji Aoki
Shunji Aoki Hyogo University of Health Sciences
Yoshimasa Kyogoku
Yoshimasa Kyogoku Osaka University
Tatsuhiko Furukawa
Tatsuhiko Furukawa Kagoshima University
Tomoyuki Sumizawa
Tomoyuki Sumizawa Kagoshima University
Toshihiro Horii
Toshihiro Horii Osaka University
Zhe-Sheng Chen
Zhe-Sheng Chen St. John's University
Shinsaku Nakagawa
Shinsaku Nakagawa Osaka University
Shin-ichi Akiyama
Shin-ichi Akiyama Kagoshima University
Toshiyuki Sakai
Toshiyuki Sakai Kyoto Prefectural University of Medicine

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