Tsunao Hase

898 total citations
63 papers, 725 citations indexed

About

Tsunao Hase is a scholar working on Molecular Biology, Plant Science and Organic Chemistry. According to data from OpenAlex, Tsunao Hase has authored 63 papers receiving a total of 725 indexed citations (citations by other indexed papers that have themselves been cited), including 29 papers in Molecular Biology, 27 papers in Plant Science and 15 papers in Organic Chemistry. Recurrent topics in Tsunao Hase's work include Phytochemistry and Biological Activities (20 papers), Natural product bioactivities and synthesis (13 papers) and Marine Sponges and Natural Products (10 papers). Tsunao Hase is often cited by papers focused on Phytochemistry and Biological Activities (20 papers), Natural product bioactivities and synthesis (13 papers) and Marine Sponges and Natural Products (10 papers). Tsunao Hase collaborates with scholars based in Japan, United States and Canada. Tsunao Hase's co-authors include Tetsuo Iwagawa, Munehiro Nakatani, Takashi Iwashita, Hideo Naoki, Yasuto Uchio, Koji Hasegawa, Yuji Miyazaki, Mitsuru Nakayama, Mujo Kim and Tsutomu Ōkubo and has published in prestigious journals such as The Journal of Organic Chemistry, Tetrahedron and Phytochemistry.

In The Last Decade

Tsunao Hase

63 papers receiving 686 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Tsunao Hase Japan	16	445	329	131	128	91	63	725
Mario Silva Chile	18	326 0.7×	251 0.8×	82 0.6×	116 0.9×	112 1.2×	52	742
Yutaka Orihara Japan	19	605 1.4×	306 0.9×	113 0.9×	61 0.5×	90 1.0×	32	786
PR Jefferies Australia	15	500 1.1×	329 1.0×	72 0.5×	145 1.1×	64 0.7×	62	829
Takehiko Tozyo Japan	15	500 1.1×	201 0.6×	53 0.4×	117 0.9×	90 1.0×	29	708
Yoshinori Shiobara Japan	19	456 1.0×	274 0.8×	78 0.6×	257 2.0×	57 0.6×	45	944
Lorenzo Mangoni Italy	19	623 1.4×	353 1.1×	61 0.5×	290 2.3×	99 1.1×	75	1.1k
Lawrence J. Mulheirn Netherlands	16	531 1.2×	302 0.9×	118 0.9×	141 1.1×	42 0.5×	31	947
Barry V. Charlwood United Kingdom	17	729 1.6×	397 1.2×	174 1.3×	53 0.4×	157 1.7×	45	1.0k
M. D. GARCIA‐GRAVALOS Spain	9	268 0.6×	195 0.6×	109 0.8×	146 1.1×	95 1.0×	13	627
Jian Lu Chen United States	15	308 0.7×	180 0.5×	161 1.2×	204 1.6×	64 0.7×	17	802

Countries citing papers authored by Tsunao Hase

Since Specialization

Citations

This map shows the geographic impact of Tsunao Hase's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Tsunao Hase with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Tsunao Hase more than expected).

Fields of papers citing papers by Tsunao Hase

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Tsunao Hase. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Tsunao Hase. The network helps show where Tsunao Hase may publish in the future.

Co-authorship network of co-authors of Tsunao Hase

This figure shows the co-authorship network connecting the top 25 collaborators of Tsunao Hase. A scholar is included among the top collaborators of Tsunao Hase based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Tsunao Hase. Tsunao Hase is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Iwagawa, Tetsuo, et al.. (1997). New di- and tricarbocyclic diterpenes possessing a bicyclic [4.3.1] ring system isolated from the soft coral, Xenia florida. Tetrahedron. 53(20). 6809–6816. 15 indexed citations

Iwagawa, Tetsuo, et al.. (1996). New Xenia Diterpenoids from a Soft Coral, Xenia Species. Heterocycles. 43(6). 1271–1271. 7 indexed citations

Iwagawa, Tetsuo, et al.. (1994). A new tricarbocyclic diterpene structure from the soft coral Xenia florida. Journal of the Chemical Society Chemical Communications. 2073–2073. 6 indexed citations

Nakatani, Munehiro & Tsunao Hase. (1991). Absolute Stereochemistry and Novel Ring-Opening Oxidation of Methyl (R)-2-Hydroxysterculate. Bulletin of the Chemical Society of Japan. 64(10). 3084–3088. 5 indexed citations

Nakatani, Munehiro, et al.. (1991). Metaseol, a symmetrical diphenylmethane from Metasequoia glyptostroboides. Phytochemistry. 30(3). 1034–1036. 9 indexed citations

Nakatani, Munehiro, Yuki Matsuoka, Yasuto Uchio, & Tsunao Hase. (1990). New Ring Opening Oxidation of Methyl Sterculate and Malvalate. Chemistry Letters. 19(4). 669–670. 4 indexed citations

Nakatani, Munehiro, Yuji Miyazaki, Takashi Iwashita, Hideo Naoki, & Tsunao Hase. (1989). Triterpenes from Ilex rotunda fruits. Phytochemistry. 28(5). 1479–1482. 64 indexed citations

Nakatani, Munehiro, et al.. (1989). A dihydroxycyclopentadienone and other constituents from the seeds of Trifolium repens. Phytochemistry. 28(9). 2499–2501. 4 indexed citations

Nakatani, Munehiro, et al.. (1989). The Structure of Rotungenoside, a New Bitter Triterpene Glucoside from Ilex Rotunda. Bulletin of the Chemical Society of Japan. 62(2). 469–473. 21 indexed citations

10.

Nakatani, Munehiro, et al.. (1988). Glaucin B, a new bitter limonoid from Evodia glauca. Phytochemistry. 27(5). 1429–1432. 10 indexed citations

11.

Nakatani, Munehiro, et al.. (1987). The Structure of Graucin A, a New Bitter Limonoid from Evodia grauca Miq. (Rutaceae). Bulletin of the Chemical Society of Japan. 60(7). 2503–2507. 11 indexed citations

12.

Nakatani, Munehiro, et al.. (1986). Synthesis and Biological Activities of Acetylenic Fatty Acids and Their Esters. Bulletin of the Chemical Society of Japan. 59(11). 3535–3539. 10 indexed citations

13.

Iwagawa, Tetsuo & Tsunao Hase. (1984). A coumarin acetylglucoside from viburnum suspensum. Phytochemistry. 23(2). 467–468. 9 indexed citations

14.

Hase, Tsunao & Tetsuo Iwagawa. (1982). Bitter principles of Viburnum suspensum.. Chemistry Letters. 13–14. 1 indexed citations

15.

Hase, Tsunao & Koji Hasegawa. (1982). Raphanusol A, a new growth inhibitor from sakurajima radish seedlings. Phytochemistry. 21(5). 1021–1022. 15 indexed citations

16.

Hasegawa, Koji & Tsunao Hase. (1981). Raphanusol B: A Growth Inhibitor of Light-grown Radish Seedlings. Plant and Cell Physiology. 2 indexed citations

17.

Uchio, Yasuto, et al.. (1981). Lobohedleolide and (7Z)-lobohedleolide, new cembranolides from the soft coral lobophytum hedleyi whitelegge. Tetrahedron Letters. 22(41). 4089–4092. 21 indexed citations

18.

Hase, Tsunao, et al.. (1973). On the Structure of the Bitter Principle of Ilex oldhami Miq., Ilex pedunculosa Miq. and Ilex rotunda Thumb.. NIPPON KAGAKU KAISHI. 778–785. 10 indexed citations

19.

Edwards, Joseph D., Takashi Matsumoto, & Tsunao Hase. (1967). Senecio alkaloids. Synthesis of sarracinic acid. The Journal of Organic Chemistry. 32(1). 244–246. 8 indexed citations

20.

Kubôta, Takashi & Tsunao Hase. (1966). The Constituents of the Leaves of Robinia Pseudoacacia. Nippon kagaku zassi. 87(11). 1206–1208,A68. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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