Ryuji Tachikawa

620 total citations
43 papers, 447 citations indexed

About

Ryuji Tachikawa is a scholar working on Organic Chemistry, Molecular Biology and Environmental Chemistry. According to data from OpenAlex, Ryuji Tachikawa has authored 43 papers receiving a total of 447 indexed citations (citations by other indexed papers that have themselves been cited), including 32 papers in Organic Chemistry, 12 papers in Molecular Biology and 9 papers in Environmental Chemistry. Recurrent topics in Ryuji Tachikawa's work include Synthesis and Biological Evaluation (12 papers), Synthesis and Reactions of Organic Compounds (10 papers) and Synthesis and pharmacology of benzodiazepine derivatives (9 papers). Ryuji Tachikawa is often cited by papers focused on Synthesis and Biological Evaluation (12 papers), Synthesis and Reactions of Organic Compounds (10 papers) and Synthesis and pharmacology of benzodiazepine derivatives (9 papers). Ryuji Tachikawa collaborates with scholars based in Japan, United Kingdom and United States. Ryuji Tachikawa's co-authors include Chihiro Tamura, Kyosuke Tsuda, Susumu Ikuma, Masaaki Kawamura, Kiyoshi Sakai, T. MIYADERA, Yoichi Kawano, Shigehiko Sugasawa, Yuichiro Yabe and Shinsaku Kobayashi and has published in prestigious journals such as Journal of Medicinal Chemistry, The Journal of Organic Chemistry and Tetrahedron.

In The Last Decade

Ryuji Tachikawa

39 papers receiving 416 citations

Peers

Countries citing papers authored by Ryuji Tachikawa

Since Specialization

Citations

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

Fields of papers citing papers by Ryuji Tachikawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryuji Tachikawa

This figure shows the co-authorship network connecting the top 25 collaborators of Ryuji Tachikawa. A scholar is included among the top collaborators of Ryuji Tachikawa 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 Ryuji Tachikawa. Ryuji Tachikawa 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	Natural acetylenes. Part 61. Fungal polyacetylenes and the crepenynate pathway:the biosynthesis of some C 9 -C 14 polyacetylenes in fungal cultures. 1987 ·Journal of Chemical Research Synopses ·(unknown), Ulrich Gräf, (unknown), (unknown), E. R. H. Jones, I.K. O'Neill, Ryuji Tachikawa, V. Thaller, (unknown), Alex Hodge	4
2	Studies on 1,3-benzoxazines. VII. Formation of diphenylpyrimidines by the reaction of 4-chloro-2H-1,3-benzoxazines with ethyl 3-aminobutyrate. 1982 ·Chemical and Pharmaceutical Bulletin ·Ryuji Tachikawa, (unknown), (unknown)	1
3	ChemInform Abstract: STUDIES ON 1,3‐BENZOXAZINES. V. REACTION OF IMIDOYL CHLORIDES OF 1,3‐BENZOXAZINES WITH 2‐AMINOPHENOLS, O‐PHENYLENEDIAMINES AND 2‐AMINOTHIOPHENOL 1982 ·Chemischer Informationsdienst ·Ryuji Tachikawa, (unknown), (unknown)	1
4	Synthesis of Imidazolopyridine Derivatives by an Unusual Reaction of N -Benzylpicolinamides with Phosphorus Pentachloride 1981 ·Heterocycles ·(unknown), Ryuji Tachikawa, Shigeru Tanaka	0
5	Studies in 1,3-Benzoxazines IV. Reaction of Imidoyl Chlorides of 1,3-Benzoxazines with Sulfoxides 1981 ·Heterocycles ·Ryuji Tachikawa, (unknown), (unknown)	6
6	Reactions of 2-piperidylacetohydrazides with ethyl acetoacetate or acetylenic acid esters. Formation of 3,4-dimethylpyrano[2,3-c]pyrazol(6)ones and perhydropyrazolo[2,3-a]pyrido[1,2-c]pyrimidin-2,5-diones. 1980 ·Chemical and Pharmaceutical Bulletin ·Teruo Tanaka, (unknown), T. MIYADERA, Ryuji Tachikawa	1
7	Studies on Benzodiazepinooxazoles. V. Reactions of Benzo [6, 7]-1, 4-diazepino [5, 4-b] oxazole Derivatives with Acetic Anhydride 1973 ·Chemical and Pharmaceutical Bulletin ·(unknown), Yuichiro Yabe, T. MIYADERA, Ryuji Tachikawa	0
8	Natural acetylenes. Part XXXIII. The biogenesis of the C9 diacetylenic triol from the fungus Clitocybe rhizophora velen 1971 ·Journal of the Chemical Society C Organic ·(unknown), A. C. Day, Ulrich Gräf, Ewart R. H. Jones, I.K. O'Neill, Ryuji Tachikawa, V. Thaller, R. Anthony Vere Hodge	4
9	Pharmacological studies of Oxazolazepam, a new Psychotropic agent. (Report 1) 1970 ·Folia Pharmacologica Japonica ·(unknown), (unknown), Shinsaku Kobayashi, Yoshio Suzuki, Ryuji Tachikawa	4
10	Studies on quinolizinium salts—VII 1969 ·Tetrahedron ·T. MIYADERA, Ryuji Tachikawa	3
11	Studies on quinolizinium salts—VI 1969 ·Tetrahedron ·T. MIYADERA, Ryuji Tachikawa	7
12	On the Structure of Tetrodotoxin 1964 ·Chemical and Pharmaceutical Bulletin ·Kyosuke Tsuda, Ryuji Tachikawa, Kiyoshi Sakai, Chihiro Tamura, (unknown), Masaaki Kawamura, Susumu Ikuma	41
13	Uber die Konstitution und Konfiguration des Anhydrotetrodotoxins 1964 ·Chemical and Pharmaceutical Bulletin ·Kyosuke Tsuda, Chihiro Tamura, Ryuji Tachikawa, Kiyoshi Sakai, (unknown), Masaaki Kawamura, Susumu Ikuma	27
14	Tetrodotoxin. VII. On the Structures of Tetrodotoxin and its Derivatives 1964 ·Chemical and Pharmaceutical Bulletin ·Kyosuke Tsuda, Susumu Ikuma, Masaaki Kawamura, Ryuji Tachikawa, Kiyoshi Sakai, Chihiro Tamura, (unknown)	196
15	Die Konstitution und Konfiguration der Tetrodonsaure 1963 ·Chemical and Pharmaceutical Bulletin ·Kyosuke Tsuda, Chihiro Tamura, Ryuji Tachikawa, Kiyoshi Sakai, (unknown), Masaaki Kawamura, Susumu Ikuma	15
16	[On tetrodotoxin. IV. The structure of C9-bases, which are prepared from tetrodoxoxin by the effect of alkalies]. 1962 ·PubMed ·Kazuhiro Tsuda, Susumu Ikuma, (unknown), Ryuji Tachikawa, Yoshinari Baba, T. MIYADERA	1
17	[On tetrodotoxin. V. Synthesis of C9-base-methylethers]. 1962 ·PubMed ·Kyosuke Tsuda, Susumu Ikuma, (unknown), Ryuji Tachikawa, T. MIYADERA	3
18	Uber die Struktur der C<SUB>9</SUB>-Base, die sich durch Behandlung mit Alkalilauge aus Tetrodotoxin gewinnen laβt 1962 ·Chemical and Pharmaceutical Bulletin ·Kyosuke Tsuda, Susumu Ikuma, Masaaki Kawamura, Ryuji Tachikawa, Yoshihiko Baba, T. MIYADERA	6
19	[On tetrodotoxin.VI. 2-Amino-6-methylquinazoline as decomposition products of tetrodotoxin]. 1962 ·PubMed ·(unknown), Susumu Ikuma, (unknown), Ryuji Tachikawa, T. MIYADERA	1
20	Synthesis of some isoquinoline derivatives 1959 ·Tetrahedron ·Ryuji Tachikawa	3

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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