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Tsutomu Ishikawa

Tsutomu Ishikawa

D-Index & Metrics

Chemistry

D-Index
48
Citations
8955
World Ranking
15182
National Ranking
1188

Overview

Tsutomu Ishikawa is a researcher affiliated with Chiba University in Japan. Their work spans multiple fields, primarily focusing on Physics and Astronomy as well as Pharmacology, Toxicology, and Pharmaceutics. Within these broader domains, their subfields of study include Nuclear and High Energy Physics, Pharmacology, Plant Science, Analytical Chemistry, and Geriatrics and Gerontology.

Their research interests cover a range of scientific topics, including:

  • Pharmacological Effects of Natural Compounds
  • Phytochemistry and Biological Activity of Medicinal Plants
  • Chromatography in Natural Products
  • Particle Physics Theoretical and Experimental Studies
  • Quantum Chromodynamics and Particle Interactions
  • Black Holes and Theoretical Physics
  • Sirtuins and Resveratrol in Medicine

Tsutomu Ishikawa has contributed to several publications across different scientific venues. Notable recent papers include:

  • "Quercetin 3,5,7,3',4'-pentamethyl ether from Kaempferia parviflora directly and effectively activates human SIRT1" (2021) published in Communications Biology
  • "Is 18α-Glycyrrhizin a real natural product? Improved preparation of 18α-Glycyrrhizin from 18β-Glycyrrhizin as a positive standard for HPLC analysis of licorice extracts" (2022) published in Journal of Natural Medicines
  • "HPLC analysis of ammonium glycyrrhizate listed in the European, United States, and Japanese Pharmacopoeias under reported and modified conditions: revision of the peak assignment for 18α-glycyrrhizin in the European and United States Pharmacopoeias" (2022) published in Journal of Natural Medicines
  • "Spectral sum from Euclidean lattice correlators and determination of renormalization constants" (2021) published in arXiv (Cornell University)

The researcher has frequently collaborated with several coauthors, including Jin Tatsuzaki, Kazuaki Kamata, S. Hashimoto, T. Kaneko, and Mimin Zhang. These partnerships have contributed to an array of publications in journals such as the Journal of Natural Medicines, arXiv (Cornell University), and Communications Biology.

Tsutomu Ishikawa's work bridges theoretical physics and experimental approaches, integrating studies on particle physics and natural compounds' pharmacological properties. Their contributions to chromatography methods in natural products and investigations into sirtuins offer insights relevant for multiple scientific disciplines.

Best Publications

  • Superbases for Organic Synthesis

    Tsutomu Ishikawa

  • Guanidines in organic synthesis

    Tsutomu Ishikawa;Takuya Kumamoto

  • Modified guanidines as chiral auxiliaries.

    Tsutomu Ishikawa;Toshio Isobe

  • Benzo[c]phenanthridine bases and their antituberculosis activity.

    Tsutomu Ishikawa

  • 2-Chloro-1,3-dimethylimidazolinium Chloride. 1. A Powerful Dehydrating Equivalent to DCC

    Toshio Isobe;Tsutomu Ishikawa

  • Modified guanidines as chiral superbases: the first example of asymmetric silylation of secondary alcohols

    Toshio Isobe;Keiko Fukuda;Yukari Araki;Tsutomu Ishikawa

  • Superbases for Organic Synthesis: Guanidines, Amidines, Phosphazenes and Related Organocatalysts

    Tsutomu Ishikawa

  • Modified Guanidines as Chiral Superbases: Application to Asymmetric Michael Reaction of Glycine Imine with Acrylate or Its Related Compounds.

    Tsutomu Ishikawa;Yukari Araki;Takuya Kumamoto;Hiroko Seki

  • Isoflavonoids from Pueraria mirifica and their Estrogenic Activity

    Sunee Chansakaow;Tsutomu Ishikawa;Keiko Sekine;Mineaki Okada

  • New cytotoxic cyclobutanoid amides, a new furanoid lignan and anti-platelet aggregation constituents from Piper arborescens.

    Ian Lih Tsai;Fan Pin Lee;Chin Chung Wu;Chang Yih Duh

  • Concise synthesis of anti-HIV-1 active (+)-inophyllum B and (+)-calanolide a by application of (-).Quinine-catalyzed intramolecular oxo-michael addition

    Etsuko Sekino;Takuya Kumamoto;Tomohiro Tanaka;Tomoko Ikeda

  • 2-Chloro-1,3-dimethylimidazolinium Chloride. 2. Its Application to the Construction of Heterocycles through Dehydration Reactions

    Toshio Isobe;Tsutomu Ishikawa

  • A new sesquiterpene and other terpenoid constituents of Chisocheton penduliflorus.

    Jarinporn Phongmaykin;Takuya Kumamoto;Tsutomu Ishikawa;Rutt Suttisri

  • Anti-platelet aggregation constituents from formosan Toddalia asiatica

    Ian-Lih Tsai;Ming-Fong Wun;Che-Ming Teng;Tsutomu Ishikawa

  • Inhibitory effect of oxycoumarins isolated from the Thai medicinal plant Clausena guillauminii on the inflammation mediators, iNOS, TNF-α, and COX-2 expression in mouse macrophage RAW 264.7

    Tomonori Nakamura;Naoko Kodama;Yu Arai;Takuya Kumamoto

  • Studies on the Chemical Constituents of Stem Bark of Millettia leucantha: Isolation of New Chalcones with Cytotoxic, Anti-herpes Simplex Virus and Anti-inflammatory Activities

    Ampai Phrutivorapongkul;Vimolmas Lipipun;Nijsiri Ruangrungsi;Kanyawim Kirtikara

  • Coumarins and antiplatelet constituents from the root bark of Zanthoxylum schinifolium

    Ian-Lih Tsai;Wei-Yu Lin;Che-Ming Teng;Tsutomu Ishikawa

  • Anti-platelet aggregation and chemical constituents from the rhizome of Gynura japonica.

    Wei-Yu Lin;Yueh-Hsiung Kuo;Ya-Ling Chang;Che-Ming Teng

  • Modified guanidines as potential chiral superbases. 1. Preparation Of 1,3-disubstituted 2-iminoimidazolidines and the related guanidines through chloroamidine derivatives

    Toshio Isobe;Keiko Fukuda;Tsutomu Ishikawa

  • An approach to anti-HIV-1 active Calophyllum coumarin synthesis: An enantioselective construction of 2,3-dimethyl-4-chromanone ring by quinine-assisted intramolecular Michael-type addition

    Tsutomu Ishikawa;Yumie Oku;Tomohiro Tanaka;Takuya Kumamoto

  • Guanidine chemistry.

    Unknown

Frequent Co-Authors

Ih-Sheng Chen
Ih-Sheng Chen Kaohsiung Medical University
Kentaro Yamaguchi
Kentaro Yamaguchi Tokushima Bunri University
Noriyuki Suzuki
Noriyuki Suzuki National Institute for Environmental Studies
Jun'ichi Kobayashi
Jun'ichi Kobayashi Hokkaido University
Masato Asanuma
Masato Asanuma Okayama University
Kazuei Igarashi
Kazuei Igarashi Chiba University
Kazuo Furihata
Kazuo Furihata University of Tokyo
Yuzuru Mikami
Yuzuru Mikami Chiba University
Yoshihiko Funae
Yoshihiko Funae Osaka Metropolitan University
Che-Ming Teng
Che-Ming Teng National Taiwan University

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