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Osamu Muraoka

Osamu Muraoka

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 43 17150 15500 1353 1225 322 7587

Osamu Muraoka publications per year

The chart shows the history of publications by Osamu Muraoka between 1974 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Osamu Muraoka published across 52 years, from 1974 to 2025, averaging 6.5 papers a year. Output peaked at 21 publications in 2016. 9 of the 340 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1974 to 2025. Vertical axis: number of publications, 0 to 21. Peak 21 publications in 2016. 1974: 1 publication 1975: 1 publication 1976: 0 publications 1977: 0 publications 1978: 6 publications 1979: 4 publications 1980: 1 publication 1981: 0 publications 1982: 2 publications 1983: 1 publication 1984: 4 publications 1985: 6 publications 1986: 1 publication 1987: 2 publications 1988: 0 publications 1989: 3 publications 1990: 5 publications 1991: 2 publications 1992: 3 publications 1993: 5 publications 1994: 11 publications 1995: 9 publications 1996: 11 publications 1997: 12 publications 1998: 13 publications 1999: 1 publication 2000: 4 publications 2001: 7 publications 2002: 6 publications 2003: 8 publications 2004: 3 publications 2005: 7 publications 2006: 6 publications 2007: 7 publications 2008: 12 publications 2009: 17 publications 2010: 15 publications 2011: 11 publications 2012: 19 publications 2013: 13 publications 2014: 13 publications 2015: 10 publications 2016: 21 publications 2017: 11 publications 2018: 11 publications 2019: 8 publications 2020: 3 publications 2021: 5 publications 2022: 4 publications 2023: 6 publications 2024: 3 publications 2025: 6 publications
1974 2025

340 publications in total across all disciplines

View publications per year as a table
Osamu Muraoka: publications per year, 1974 to 2025
Year Publications
1974 1
1975 1
1976 0
1977 0
1978 6
1979 4
1980 1
1981 0
1982 2
1983 1
1984 4
1985 6
1986 1
1987 2
1988 0
1989 3
1990 5
1991 2
1992 3
1993 5
1994 11
1995 9
1996 11
1997 12
1998 13
1999 1
2000 4
2001 7
2002 6
2003 8
2004 3
2005 7
2006 6
2007 7
2008 12
2009 17
2010 15
2011 11
2012 19
2013 13
2014 13
2015 10
2016 21
2017 11
2018 11
2019 8
2020 3
2021 5
2022 4
2023 6
2024 3
2025 6
Total 340
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Osamu Muraoka 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 Osamu Muraoka 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, 321–340 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: 322 publications — 68th percentile

68% 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
321–340 643 322
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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Osamu Muraoka 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 Osamu Muraoka 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, 42–43 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: 43 D-Index — 5th percentile

5% 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 43
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
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

Osamu Muraoka is affiliated with Kindai University in Japan, contributing research primarily in the fields of Biochemistry, Genetics and Molecular Biology, Medicine, and Chemistry. Their scholarly work encompasses molecular biology, organic chemistry, plant science, endocrinology, diabetes and metabolism, and biochemistry.

Their research focuses on several specialized topics including carbohydrate chemistry and synthesis, phytochemical compounds biological activities, natural antidiabetic agents studies, plant-derived lignans synthesis and bioactivity, traditional and medicinal uses of Annonaceae, Pneumocystis jirovecii pneumonia detection and treatment, and natural product bioactivities and synthesis.

Muraoka has published extensively, with notable research appearing in the following venues:

  • Journal of Natural Medicines (4 publications)
  • ChemMedChem (3 publications)
  • Fitoterapia (2 publications)
  • International Journal of Molecular Sciences (2 publications)
  • RSC Advances (2 publications)

Frequent collaborators include Toshio Morikawa, Genzoh Tanabe, Weijia Xie, Kiyofumi Ninomiya, and Masayuki Yoshikawa.

Selected recent papers authored or co-authored by Muraoka include:

  • A review of antidiabetic active thiosugar sulfoniums, salacinol and neokotalanol, from plants of the genus Salacia (2021, Journal of Natural Medicines)
  • Radiation responsive PROTAC nanoparticles for tumor-specific proteolysis enhanced radiotherapy (2024, Journal of Materials Chemistry B)
  • 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)
  • Design and Synthesis of Sulfonium Derivatives: A Novel Class of α-Glucosidase Inhibitors with Potent In Vivo Antihyperglycemic Activities (2023, Journal of Medicinal Chemistry)

Best Publications

  • Salacinol, potent antidiabetic principle with unique thiosugar sulfonium sulfate structure from the ayurvedic traditional medicine Salacia reticulata in Sri Lanka and India

    Masayuki Yoshikawa;Toshiyuki Murakami;Hiromi Shimada;Hisashi Matsuda

  • 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

  • Di-tert-butylsilylene (DTBS) group-directed α-selective galactosylation unaffected by C-2 participating functionalities

    Akihiro Imamura;Hiromune Ando;Satomi Korogi;Genzoh Tanabe

  • Acylated phenylethanoid oligoglycosides with hepatoprotective activity from the desert plant Cistanche tubulosa.

    Toshio Morikawa;Yingni Pan;Yingni Pan;Kiyofumi Ninomiya;Katsuya Imura

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

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

  • 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

  • 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

  • Isolation, structure identification and SAR studies on thiosugar sulfonium salts, neosalaprinol and neoponkoranol, as potent α-glucosidase inhibitors.

    Weijia Xie;Genzoh Tanabe;Junji Akaki;Toshio Morikawa

  • Biological evaluation of de-O-sulfonated analogs of salacinol, the role of sulfate anion in the side chain on the α-glucosidase inhibitory activity

    Genzoh Tanabe;Kazuya Yoshikai;Takanori Hatanaka;Mizuho Yamamoto

  • Absolute stereostructures of novel norcadinane- and trinoreudesmane-type sesquiterpenes with nitric oxide production inhibitory activity from Alpinia oxyphylla.

    Osamu Muraoka;Manabu Fujimoto;Genzoh Tanabe;Michinori Kubo

  • Acylated phenylethanoid glycosides, echinacoside and acteoside from Cistanche tubulosa, improve glucose tolerance in mice

    Toshio Morikawa;Kiyofumi Ninomiya;Mio Imamura;Junji Akaki

  • Hepatoprotective triterpenes from traditional Tibetan medicine Potentilla anserina.

    Toshio Morikawa;Kiyofumi Ninomiya;Katsuya Imura;Takahiro Yamaguchi

  • On the structure of the bioactive constituent from ayurvedic medicine Salacia reticulata: revision of the literature

    Osamu Muraoka;Weijia Xie;Genzoh Tanabe;Mumen F.A. Amer

  • Oleanane-type triterpene oligoglycosides with pancreatic lipase inhibitory activity from the pericarps of Sapindus rarak

    Toshio Morikawa;Yuanyuan Xie;Yuanyuan Xie;Yasunobu Asao;Masaki Okamoto

  • Inhibitors of Nitric Oxide Production from the Rhizomes of Alpinia galanga: Structures of New 8–9′ Linked Neolignans and Sesquineolignan

    Toshio Morikawa;Shin Ando;Hisashi Matsuda;Shinya Kataoka

  • Bioactive constituents from Chinese natural medicines. XXII. Absolute structures of new megastigmane glycosides, sedumosides E1, E2, E3, F1, F2, and G, from Sedum sarmentosum (Crassulaceae).

    Toshio Morikawa;Toshio Morikawa;Yi Zhang;Seikou Nakamura;Hisashi Matsuda

  • Monoterpene constituents from Cistanche tubulosa--chemical structures of kankanosides A-E and kankanol-.

    Haihui Xie;Toshio Morikawa;Toshio Morikawa;Hisashi Matsuda;Seikou Nakamura

  • Total synthesis of (+/-)-stemonamide and (+/-)-isostemonamide using a radical cascade.

    Tsuyoshi Taniguchi;Genzo Tanabe;Osamu Muraoka;Hiroyuki Ishibashi

  • Bioactive constituents from Chinese natural medicines. XXIII. Absolute structures of new megastigmane glycosides, sedumosides A(4), A(5), A(6), H, and I, and hepatoprotective megastigmanes from Sedum sarmentosum.

    Kiyofumi Ninomiya;Kiyofumi Ninomiya;Toshio Morikawa;Toshio Morikawa;Yi Zhang;Seikou Nakamura

  • 7-endo selective aryl radical cyclization onto enamides leading to 3-benzazepines: concise construction of a cephalotaxine skeleton.

    Tsuyoshi Taniguchi;Atsuko Ishita;Masahiko Uchiyama;Osamu Tamura

  • Synthesis and biological evaluation of deoxy salacinols, the role of polar substituents in the side chain on the α-glucosidase inhibitory activity

    Osamu Muraoka;Kazuya Yoshikai;Hideo Takahashi;Toshie Minematsu

  • Bioactive Saponins and Glycosides. XXVIII. New Triterpene Saponins, Foliatheasaponins I, II, III, IV, and V, from Tencha (the Leaves of Camellia sinensis)

    Toshio Morikawa;Toshio Morikawa;Seikou Nakamura;Yasuyo Kato;Osamu Muraoka

Frequent Co-Authors

Toshio Morikawa
Toshio Morikawa Kindai University
Masayuki Yoshikawa
Masayuki Yoshikawa Kyoto Pharmaceutical University
Hisashi Matsuda
Hisashi Matsuda Kyoto Pharmaceutical University
Seikou Nakamura
Seikou Nakamura Kyoto Pharmaceutical University
Jinyi Xu
Jinyi Xu China Pharmaceutical University
Hiroshi Shimizu
Hiroshi Shimizu Hokkaido University
Kiyoshi Tomioka
Kiyoshi Tomioka Doshisha Women's College of Liberal Arts
Hequan Yao
Hequan Yao China Pharmaceutical University
Munekazu Iinuma
Munekazu Iinuma Gifu Pharmaceutical University
Makoto Kiso
Makoto Kiso Gifu University

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