D-Index & Metrics Best Publications

D-Index & Metrics D-index (Discipline H-index) only includes papers and citation values for an examined discipline in contrast to General H-index which accounts for publications across all disciplines.

Discipline name D-index D-index (Discipline H-index) only includes papers and citation values for an examined discipline in contrast to General H-index which accounts for publications across all disciplines. Citations Publications World Ranking National Ranking
Chemistry D-index 65 Citations 10,693 201 World Ranking 4943 National Ranking 331

Overview

What is he best known for?

The fields of study he is best known for:

  • Enzyme
  • Organic chemistry
  • Botany

His main research concerns Stereochemistry, Tannin, Proanthocyanidin, Organic chemistry and Bark. His studies deal with areas such as Casuarinin, Flavanonol and Prodelphinidin as well as Stereochemistry. Tannin is a primary field of his research addressed under Botany.

The Flavan-3-ol research Gen-ichiro Nonaka does as part of his general Proanthocyanidin study is frequently linked to other disciplines of science, such as Rheum, therefore creating a link between diverse domains of science. His research in Organic chemistry focuses on subjects like Theaceae, which are connected to Green tea. His Bark study integrates concerns from other disciplines, such as Lauraceae, Hydrolysis, Rubiaceae and Carbon-13 NMR.

His most cited work include:

  • Study on the Inhibitory Effect of Tannins and Flavonoids against the 1,1-Diphenyl-2-picrylhydrazyl Radical (489 citations)
  • Tannins and related compounds. XV. A new class of dimeric flavan-3-ol gallates, theasinensins A and B, and proanthocyanidin gallates from green tea leaf (1) (233 citations)
  • Antitumor Agents, 129. Tannins and Related Compounds as Selective Cytotoxic Agents (164 citations)

What are the main themes of his work throughout his whole career to date?

Gen-ichiro Nonaka mainly focuses on Stereochemistry, Tannin, Organic chemistry, Proanthocyanidin and Botany. The Stereochemistry study combines topics in areas such as Gallic acid, Molecule, Ellagitannin and Bark. His research integrates issues of Lauraceae and Quercus stenophylla in his study of Bark.

His work in Tannin addresses subjects such as Euphorbiaceae, which are connected to disciplines such as Mallotus japonicus. His work deals with themes such as Flavan, Trimer and Tetramer, which intersect with Proanthocyanidin. His Botany research incorporates elements of Pharmacognosy and Traditional medicine.

He most often published in these fields:

  • Stereochemistry (45.29%)
  • Tannin (41.70%)
  • Organic chemistry (33.18%)

What were the highlights of his more recent work (between 1993-2013)?

  • Stereochemistry (45.29%)
  • Endocrinology (7.17%)
  • Internal medicine (7.17%)

In recent papers he was focusing on the following fields of study:

His primary scientific interests are in Stereochemistry, Endocrinology, Internal medicine, Organic chemistry and Polyphenol. Gen-ichiro Nonaka interconnects Ellagitannin and Bark in the investigation of issues within Stereochemistry. His Flavonoid, Proanthocyanidin, Antioxidant, Monomer and Polymer study are his primary interests in Organic chemistry.

His Polyphenol study combines topics in areas such as Geraniin and Tergallic acid. His Methylguanidine research is multidisciplinary, relying on both Crude drug, Pharmacology and Tannin. His studies in Tannin integrate themes in fields like Chemical structure and Gallotannin.

Between 1993 and 2013, his most popular works were:

  • Study on the Inhibitory Effect of Tannins and Flavonoids against the 1,1-Diphenyl-2-picrylhydrazyl Radical (489 citations)
  • Chemical evidence for the de-astringency (insolubilization of tannins) of persimmon fruit (97 citations)
  • Evaluation of the anti-oxidative effect (in vitro) of tea polyphenols. (70 citations)

In his most recent research, the most cited papers focused on:

  • Enzyme
  • Organic chemistry
  • Botany

Biochemistry, Organic chemistry, Proanthocyanidin, Polyphenol and Stereochemistry are his primary areas of study. Gen-ichiro Nonaka focuses mostly in the field of Biochemistry, narrowing it down to matters related to Oligomer and, in some cases, Oligonol, Cysteine and Monomer. His biological study spans a wide range of topics, including Ethanol, Acetaldehyde and Polymerization, Polymer.

The study incorporates disciplines such as EC50, Lymphocyte, Pharmacology, Anti hiv and Inhibitory effect in addition to Polyphenol. His work on Glycoside as part of general Stereochemistry research is frequently linked to Cucurbitane, bridging the gap between disciplines. Gen-ichiro Nonaka has included themes like Radical, Structure–activity relationship and Tannin in his Flavonoid study.

This overview was generated by a machine learning system which analysed the scientist’s body of work. If you have any feedback, you can contact us here.

Best Publications

Study on the Inhibitory Effect of Tannins and Flavonoids against the 1,1-Diphenyl-2-picrylhydrazyl Radical

Takako Yokozawa;Cui Ping Chen;Erbo Dong;Takashi Tanaka.
Biochemical Pharmacology (1998)

818 Citations

Tannins and related compounds. XV. A new class of dimeric flavan-3-ol gallates, theasinensins A and B, and proanthocyanidin gallates from green tea leaf (1)

Genichiro Nonaka;Osamu Kawahara;Itsuo Nishioka.
Chemical & Pharmaceutical Bulletin (1983)

370 Citations

Antitumor Agents, 129. Tannins and Related Compounds as Selective Cytotoxic Agents

Yoshiki Kashiwada;Gen Ichiro Nonaka;Itsuo Nishioka;Jer Jang Chang.
Journal of Natural Products (1992)

268 Citations

Tannins and Related Compounds. XC. : 8-C-Ascorbyl (-)-Epigallocatechin 3-O-Gallate and Novel Dimeric Flavan -3-ols, Oolonghomobisflavans A and B, from Oolong Tea. (3)

Fumio Hashimoto;Gen-ichiro Nonaka;Itsuo Nishioka.
Chemical & Pharmaceutical Bulletin (1989)

183 Citations

Tannins and Related Compounds. I. Rhubarb (1)

Genichiro Nonaka;Itsuo Nishioka;Tetsuro Nagasawa;Hikokichi Oura.
Chemical & Pharmaceutical Bulletin (1981)

177 Citations

Chemical evidence for the de-astringency (insolubilization of tannins) of persimmon fruit

Takashi Tanaka;Ryuji Takahashi;Isao Kouno;Gen-ichiro Nonaka.
Journal of The Chemical Society-perkin Transactions 1 (1994)

175 Citations

Tannins and Related Compounds. LXIX. : Isolation and Structure Elucidation of B, B'-Linked Bisflavanoids, Theasinensins D-G and Oolongtheanin from Oolong Tea. (2)

Fumio Hashimoto;Gen-Ichiro Nonaka;Itsuo Nishioka.
Chemical & Pharmaceutical Bulletin (1988)

160 Citations

Magnesium and Ammonium-Potassium Lithospermates B, the Active Principles Having a Uremia-Preventive Effect from Salvia miltiorrhiza

Takashi Tanaka;Satoshi Morimoto;Gen-ichiro Nonaka;Itsuo Nishioka.
Chemical & Pharmaceutical Bulletin (1989)

148 Citations

Tannins and related compounds. XL: Revision of the structures of punicalin and punicalagin, and isolation and characterization of 2-O-galloylpunicalin from the bark of Punica granatum L.

Takashi Tanaka;Gen-Ichiro Nonaka;Itsuo Nishioka.
Chemical & Pharmaceutical Bulletin (1986)

145 Citations

Tannins and Related Compounds. XXXVIII. : Isolation and Characterization of Flavan-3-ol Glucosides and Procyanidin Oligomers from Cassia Bark : Cinnamomum cassia BLUME

Satoshi Morimoto;Gen-Ichiro Nonaka;Itsuo Nishioka.
Chemical & Pharmaceutical Bulletin (1986)

140 Citations

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