Ichiro Hirao

7.6k total citations · 1 hit paper
215 papers, 6.0k citations indexed

About

Ichiro Hirao is a scholar working on Molecular Biology, Organic Chemistry and Process Chemistry and Technology. According to data from OpenAlex, Ichiro Hirao has authored 215 papers receiving a total of 6.0k indexed citations (citations by other indexed papers that have themselves been cited), including 127 papers in Molecular Biology, 71 papers in Organic Chemistry and 15 papers in Process Chemistry and Technology. Recurrent topics in Ichiro Hirao's work include DNA and Nucleic Acid Chemistry (84 papers), RNA and protein synthesis mechanisms (80 papers) and Advanced biosensing and bioanalysis techniques (74 papers). Ichiro Hirao is often cited by papers focused on DNA and Nucleic Acid Chemistry (84 papers), RNA and protein synthesis mechanisms (80 papers) and Advanced biosensing and bioanalysis techniques (74 papers). Ichiro Hirao collaborates with scholars based in Japan, Singapore and United States. Ichiro Hirao's co-authors include Michiko Kimoto, Shigeyuki Yokoyama, Masahiko Yamaguchi, Tsuneo Mitsui, Rie Yamashige, Ken‐ichiro Matsunaga, Kimitsuna Watanabe, Akira Sato, Rie Kawai and Yoko Harada and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of the American Chemical Society and Chemical Society Reviews.

In The Last Decade

Ichiro Hirao

207 papers receiving 5.9k citations

Hit Papers

1 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

An efficient method for the alkynylation of oxiranes using alkynyl boranes

1983 383 citations Masahiko Yamaguchi, Ichiro Hirao profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ichiro Hirao Japan	43	4.8k	1.4k	489	359	325	215	6.0k
J. H. VAN BOOM Netherlands	36	3.8k 0.8×	1.6k 1.2×	228 0.5×	376 1.0×	148 0.5×	142	5.1k
Keith R. Fox United Kingdom	39	5.3k 1.1×	922 0.7×	303 0.6×	206 0.6×	155 0.5×	206	5.8k
Gary J. Quigley United States	41	7.1k 1.5×	823 0.6×	633 1.3×	368 1.0×	183 0.6×	58	8.0k
Claude Hélène France	55	8.8k 1.8×	1.1k 0.8×	498 1.0×	483 1.3×	236 0.7×	209	10.1k
G. A. VAN DER MAREL Netherlands	35	3.4k 0.7×	1.3k 0.9×	227 0.5×	192 0.5×	111 0.3×	111	4.1k
F.K. Winkler Switzerland	18	2.5k 0.5×	453 0.3×	459 0.9×	385 1.1×	129 0.4×	32	4.1k
Joseph A. Piccirilli United States	46	6.1k 1.3×	771 0.5×	521 1.1×	514 1.4×	160 0.5×	173	7.1k
Mary L. Kopka United States	29	4.3k 0.9×	483 0.3×	412 0.8×	290 0.8×	145 0.4×	40	4.8k
Gary N. Parkinson United Kingdom	43	10.4k 2.2×	755 0.5×	684 1.4×	531 1.5×	322 1.0×	79	11.3k
Tom Brown United Kingdom	36	4.0k 0.8×	1.3k 0.9×	308 0.6×	231 0.6×	693 2.1×	132	5.1k

Countries citing papers authored by Ichiro Hirao

Since Specialization

Citations

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

Fields of papers citing papers by Ichiro Hirao

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ichiro Hirao

This figure shows the co-authorship network connecting the top 25 collaborators of Ichiro Hirao. A scholar is included among the top collaborators of Ichiro Hirao 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 Ichiro Hirao. Ichiro Hirao is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Sawada, K., Michiko Kimoto, Ken‐ichiro Matsunaga, et al.. (2025). Expanded genetic alphabet increases structural and chemical diversity of six-letter DNA for high-affinity protein-targeting aptamers. Nature Communications. 17(1). 797–797.

Kimoto, Michiko, et al.. (2021). Uptake mechanisms of cell-internalizing nucleic acid aptamers for applications as pharmacological agents. RSC Medicinal Chemistry. 12(10). 1640–1649. 17 indexed citations

Yamashige, Rie, Michiko Kimoto, Yusuke Takezawa, et al.. (2011). Highly specific unnatural base pair systems as a third base pair for PCR amplification. Nucleic Acids Research. 40(6). 2793–2806. 129 indexed citations

Kimoto, Michiko, et al.. (2010). Site-specific fluorescent probing of RNA molecules by unnatural base-pair transcription for local structural conformation analysis. Nature Protocols. 5(7). 1312–1323. 38 indexed citations

Yamaguchi, Masahiko, et al.. (1984). The Michael reaction of simple ester enolates to .ALPHA.,.BETA.-unsaturated esters.. Chemistry Letters. 375–376. 1 indexed citations

Hirao, Ichiro, et al.. (1972). Synthesis of 3-(p-Carboxyphenoxy) propionic Acid and Its Dimethyl Ester. NIPPON KAGAKU KAISHI. 1534–1535.

Kito, Taketoshi, et al.. (1972). Decomposition Reaction of N-Nitroso-s-caprolactam by Acids. NIPPON KAGAKU KAISHI. 599–601. 1 indexed citations

Hirao, Ichiro, et al.. (1971). Syntheses of ω-(p-Carboxyphenoxy) alkanoic Acids and Their Dimethyl Esters. The Journal of the Society of Chemical Industry Japan. 74(11). 2313–2315. 3 indexed citations

Kito, Taketoshi, et al.. (1970). Carboxylation of Potassium Phenoxide with Potassium Alkyl Carbonates in Solvents. The Journal of the Society of Chemical Industry Japan. 73(4). 742–745. 3 indexed citations

10.

Hirao, Ichiro, et al.. (1969). Carboxylation of Phenol and Its Salts with Alkali Metal Alkyl Carbonates. The Journal of the Society of Chemical Industry Japan. 72(3). 692–695. 4 indexed citations

11.

Hirao, Ichiro, et al.. (1969). yntheiis of 2-Alkylamino-5- [2-(5-nitro-2-furyI )-1-(2-furyl)vinyl]-1, 3, 4-oxadiazoles and their Geometrical Isomers. Nippon kagaku zassi. 90(7). 713–715. 1 indexed citations

12.

Hirao, Ichiro. (1968). Synthesis of 5- [2-(5-Nitro-2-furyl)-1-(2-furyl)vinyl]-substituted 2-Amino-1, 3, 4-oxadiazole and 2-Amino-1, 3, 4-thiadiazole. Nippon kagaku zassi. 89(7). 713–716. 4 indexed citations

13.

Kato, Yasuhiko, et al.. (1968). Synthesis of 5-[2-(5-Nitro-2-furyl)-1-(2-furyl) vinyl] -1, 3, 4oxadiazol-2-one and Its Derivatives. Nippon kagaku zassi. 89(10). 955–957. 2 indexed citations

14.

Hirao, Ichiro. (1967). Synthesis of 5 [2-(5-Nitro-2-furyl)-1-(2-furyl)vinyl] -2-amino 1, 3, 4-oxadiazole. Nippon kagaku zassi. 88(5). 574–575. 13 indexed citations

15.

Hirao, Ichiro, et al.. (1965). . Nippon kagaku zassi. 86(6). 633–635. 3 indexed citations

16.

Hirao, Ichiro & Yasuhiko Kato. (1964). Synthesis of 5- [2-(5-Nitro-2-furyl)vinyl] -1, 3, 4-oxadiazol-2ones. Nippon kagaku zassi. 85(10). 693–697,A53. 2 indexed citations

17.

Hirao, Ichiro, et al.. (1964). Studies on Synthesis of 2-Keto-4-(5'-nitro-2'-furyI)-5-carbethoxy-6-methyl-1, 2, 3, 4-tetrahydropyrimidine. Nippon kagaku zassi. 85(1). 52–54,A4. 2 indexed citations

18.

Hirao, Ichiro, Tsutomu Fujimoto, Yasuhiko Kato, & Hiroshi Okazaki. (1963). Synthesis of 5-Nitro-2-furfurylidenehydrazinopyrimidines. The Journal of the Society of Chemical Industry Japan. 66(11). 1682–1685. 1 indexed citations

19.

Hirao, Ichiro, et al.. (1962). Synthesis of Adipic Acid and Suberic Acid from Tetrachloroalkanes. The Journal of the Society of Chemical Industry Japan. 65(6). 1004–1005.

20.

Hirao, Ichiro, et al.. (1961). On the Reactions of Potassium Phenoxide - Carben Dioxide Complex.. The Journal of the Society of Chemical Industry Japan. 64(7). 1213–1215. 2 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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