Takeo Sakan

1.6k total citations
77 papers, 1.2k citations indexed

About

Takeo Sakan is a scholar working on Organic Chemistry, Molecular Biology and Oncology. According to data from OpenAlex, Takeo Sakan has authored 77 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 40 papers in Organic Chemistry, 20 papers in Molecular Biology and 8 papers in Oncology. Recurrent topics in Takeo Sakan's work include Synthetic Organic Chemistry Methods (10 papers), Biological Activity of Diterpenoids and Biflavonoids (9 papers) and Chemical Reaction Mechanisms (8 papers). Takeo Sakan is often cited by papers focused on Synthetic Organic Chemistry Methods (10 papers), Biological Activity of Diterpenoids and Biflavonoids (9 papers) and Chemical Reaction Mechanisms (8 papers). Takeo Sakan collaborates with scholars based in Japan and United States. Takeo Sakan's co-authors include Sachihiko Isoe, Suong Be Hyeon, Yasuhiko Hayashi, Shigeo Katsumura, Siro Senoh, Munio Kotake, Mugio Nishizawa, Tsutomu Sakai, Fujio Murai and Yasuo Butsugan and has published in prestigious journals such as Journal of the American Chemical Society, The Journal of Organic Chemistry and Tetrahedron.

In The Last Decade

Takeo Sakan

74 papers receiving 1.1k citations

Peers

Countries citing papers authored by Takeo Sakan

Since Specialization

Citations

This map shows the geographic impact of Takeo Sakan'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 Takeo Sakan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Takeo Sakan more than expected).

Fields of papers citing papers by Takeo Sakan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Takeo Sakan. 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 Takeo Sakan. The network helps show where Takeo Sakan may publish in the future.

Co-authorship network of co-authors of Takeo Sakan

This figure shows the co-authorship network connecting the top 25 collaborators of Takeo Sakan. A scholar is included among the top collaborators of Takeo Sakan 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 Takeo Sakan. Takeo Sakan 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

#	Work	Indexed citations
1	Total synthesis of nagilactone F, a biologically active norditerpenoid dilactone isolated from Podocarpus nagi 1982 ·The Journal of Organic Chemistry ·Yasuhiko Hayashi, Takeshi Matsumoto, Mugio Nishizawa, (unknown), (unknown), Naomi Nishikawa, (unknown), Takeo Sakan	21
2	Total synthesis of nagilactone F, biologically active nor-diterpenoid dilactone isolated from 1979 ·Tetrahedron Letters ·Yasuhiko Hayashi, Takeshi Matsumoto, (unknown), Naomi Nishikawa, Motokazu Uemura, Mugio Nishizawa, (unknown), Takeo Sakan	6
3	New Congeners of Cytotoxic Nor-diterpenoid Dilactones in Podocarpus nagi : C19 Lactones of an a-Pyrone Type and a 7:8,9:11-Dienolide Type 1978 ·Heterocycles ·Yasuhiko Hayashi, Takeshi Matsumoto, Takeo Sakan	14
4	New congeners of cytotoxic nor-diterpenoid dilactones in : three new components of 7,8-epoxy-enolide type 1977 ·Tetrahedron Letters ·Yasuhiko Hayashi, Takeshi Matsumoto, (unknown), Takeo Sakan	2
5	SELECTIVE NUCLEAR LITHIATION OF AROMATIC COMPOUNDS: FACILE SYNTHESIS OF METHOXYPHTHALIDE DERIVATIVES BY CARBOXYLATION OF THE LITHIO-COMPOUNDS 1975 ·Chemistry Letters ·Motokazu Uemura, Satoru Tokuyama, Takeo Sakan	33
6	Antitumor activity of nagilactones. 1975 ·PubMed ·Yasuhiko Hayashi, Takeo Sakan	9
7	1974 ·Journal of Synthetic Organic Chemistry Japan ·Takeo Sakan	1
8	The Synthesis of Damascenone and β‐Damascone and the possible mechanism of their formation from carotenoids 1973 ·Helvetica Chimica Acta ·Sachihiko Isoe, Shigeo Katsumura, Takeo Sakan	62
9	STRUCTURES AND SYNTHESES OF HYPOLEPIN A, B AND C, SESQUITERPENES FROM HYPOLEPIS PUNCTATA METT. 1972 ·Chemistry Letters ·Yasuhiko Hayashi, Mugio Nishizawa, (unknown), Takeo Sakan	18
10	Biogenetic type synthesis of grasshopper ketone and loliolide and a possible biogenesis of allenic carotenoids 1971 ·Tetrahedron Letters ·Sachihiko Isoe, Shigeo Katsumura, Suong Be Hyeon, Takeo Sakan	48
11	The stereospecific synthesis of d,l-verbenalol 1968 ·Tetrahedron Letters ·Takeo Sakan, Kyo Abe	9
12	The reactions of 2-(2-indolyl)ethyl tosylates with bases, a novel ring enlargement reaction of indole ring 1968 ·Tetrahedron Letters ·Takeo Sakan, (unknown), Hidetoshi Takagi, (unknown), Toshio Miwa	15
13	The structure of actinidiolide, dihydroactinidiolide and actinidol 1967 ·Tetrahedron Letters ·Takeo Sakan, Sachihiko Isoe, Suong Be Hyeon	53
14	The Syntheses of DL-Stizolobinic Acid, DL-Stizolobic Acid, DL-β-(6-Carboxy-α'-pyron-5-yl) alanine and Related Compounds 1966 ·Nippon kagaku zassi ·(unknown), (unknown), Siro Senoh, Takeshi Tokuyama, Takeo Sakan	2
15	Dimers of perchloro-(3,4-dimethylenecyclobutene) I. Perchloro-(3,4,7,8-tetramethylene-tricyclo[4.2.0.02,5]octane) 1966 ·Tetrahedron Letters ·(unknown), (unknown), (unknown), Takeo Sakan	3
16	The Base-catalyzed Condensation of o-Nitroacetophenone. III. The Structure of Compound A, a Condensation Product 1965 ·Bulletin of the Chemical Society of Japan ·Takeo Sakan, (unknown), Toshio Miwa	4
17	The Base-catalyzed Condensation of o-Nitroacetophenone. II. The Ozonolysis of Methyl Ether of Compound A, a Condensation Product, and the Structure of Compound B, Another Product 1964 ·Bulletin of the Chemical Society of Japan ·Takeo Sakan, (unknown), Toshio Miwa	4
18	The Synthesis of dl-Nepetalactone 1960 ·Bulletin of the Chemical Society of Japan ·Takeo Sakan, (unknown), Fujio Murai, (unknown), Yasuo Butsugan	6
19	STUDIES ON XANTHURENIC ACID:IV. EFFECT OF INSULIN ON TRYPTOPHAN METABOLISM 1953 ·The Journal of Biochemistry ·Y. Kotake, (unknown), Takeo Sakan, Masao Yamaguchi	1
20	RESOLUTION INTO OPTICAL ISOMERS OF SOME AMINO ACIDS BY PAPER CHROMATOGRAPHY 1951 ·Journal of the American Chemical Society ·Munio Kotake, Takeo Sakan, (unknown), Siro Senoh	81

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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