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N. Takamura · SciRah

Researcher profile · Semantic Scholar

N. Takamura

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N. Takamura — researcher profile on SciRah

h-index: 18
Works: 75
Citations: 970

Most-cited papers

Dose-response studies on the carcinogenicity of potassium bromate in F344 rats after long-term oral administration.
Yuji Kurokawa, Shigenobu Aoki, Y. Matsushima, N. Takamura +2 more
1986Journal of the National Cancer Institute151 citations
Semantic Scholar
Studies on the promoting and complete carcinogenic activities of some oxidizing chemicals in skin carcinogenesis.
Yuji Kurokawa, N. Takamura, Y. Matsushima, Takayoshi Imazawa +1 more
1984Cancer Letters76 citations
Semantic Scholar
Catalyzed insertion reactions of substituted α-diazoesters. A new synthesis of cis-enoates
N. Ikota, N. Takamura, S. D. Young, B. Ganem
198175 citations
Semantic Scholar
Relationship between the duration of treatment and the incidence of renal cell tumors in male F344 rats administered potassium bromate.
Yuji Kurokawa, Y. Matsushima, N. Takamura, Takayoshi Imazawa +1 more
1987Japanese journal of cancer research : Gann41 citations
Semantic Scholar
Novel method for synthesis of aryl hydrazones from α-diazo esters: scope and limitations of nucleophiles
E. Yasui, M. Wada, N. Takamura
200940 citations
Semantic Scholar
Proteomics of Caenorhabditis elegans over-expressing human alpha-synuclein analyzed by fluorogenic derivatization-liquid chromatography/tandem mass spectrometry: identification of actin and several ribosomal proteins as negative markers at early Parkinson's disease stages.
Tomoko Ichibangase, Hiroshi Saimaru, N. Takamura, Tomoki Kuwahara +3 more
2008Biomedical chromotography40 citations
Semantic Scholar
Novel approach to arylhydrazones, the precursor for Fischer indole synthesis, via diazo esters derived from α-amino acid esters
E. Yasui, M. Wada, N. Takamura
200640 citations
Semantic Scholar
Comparative Studies on Lipid Peroxidation in the Kidney of Rats, Mice, and Hamsters and on the Effect of Cysteine, Glutathione, and Diethyl Maleate Treatment on Mortality and Nephrotoxicity After Administration of Potassium Bromate
Yuji Kurokawa, N. Takamura, C. Matsuoka, T. Imazawa +3 more
198737 citations
Semantic Scholar
Dose-related enhancing effect of potassium bromate on renal tumorigenesis in rats initiated with N-ethyl-N-hydroxyethyl-nitrosamine.
Yuji Kurokawa, Shigenobu Aoki, Takayoshi Imazawa, Y. Hayashi +2 more
1985Japanese journal of cancer research : Gann37 citations
Semantic Scholar
Promoting Effect of Metal Compounds on Rat Renal Tumorigenesis
Y. Kurokawa, M. Matsushima, T. Imazawa, N. Takamura +2 more
198528 citations Open access
Semantic Scholar
A Novel Method for a Stereoselective Synthesis of Trisubstituted Olefin Using Tricarbonyliron Complex: A Highly Stereoselective Synthesis of (all-E)- and (9Z)-Retinoic Acids.
A. Wada, S. Hiraishi, N. Takamura, T. Date +2 more
1997Journal of Organic Chemistry27 citations
Semantic Scholar
Solid Phase Peptide Synthesis employing Haloacylpolystyrene as a Polymer Support
T. Mizoguchi, K. Shigezane, N. Takamura
197027 citations Open access
Semantic Scholar
Amino Acids and Peptides. XIX. Synthetic Study of optically Active Carene Skeleton from α-Amino Acid. Total Synthesis of (+)-2-Carene
S. Yamada, N. Takamura, T. Mizoguchi
197525 citations Open access
Semantic Scholar
An improved method for proteomics studies in C. elegans by fluorogenic derivatization, HPLC isolation, enzymatic digestion and liquid chromatography--tandem mass spectrometric identification.
Mayumi Masuda, Hiroshi Saimaru, N. Takamura, K. Imai
2005Biomedical chromotography22 citations
Semantic Scholar
Promoting effect of peroxisome proliferators in two-stage rat renal tumorigenesis.
Yuji Kurokawa, N. Takamura, Y. Matushima, T. Imazawa +1 more
1988Cancer Letters22 citations
Semantic Scholar
General synthesis of pentacyclic quassinoids
D. Batt, N. Takamura, B. Ganem
198421 citations
Semantic Scholar
New entry for synthesis of N-acylhydrazones, pyridazinones, and 1,3,4-oxadiazin-6-ones from alpha-amino acid esters.
E. Yasui, M. Wada, N. Takamura
2007Chemical and pharmaceutical bulletin19 citations Open access
Semantic Scholar
Synthesis and Anti-Acetylcholinesterase Activity of Thiaphysostigmine Derivatives.
M. An-Naka, K. Yasuda, M. Yamada, A. Kawai +5 more
199419 citations Open access
Semantic Scholar
Bromoacylpolystyrene, a new type of polymer support for solid phase peptide synthesis.
T. Mizoguchi, Keisuke Shigezane, N. Takamura
1969Chemical and pharmaceutical bulletin17 citations Open access
Semantic Scholar
Development of novel pyrrole synthesis for the preparation of intermediates of bioactive pyrrole alkaloids
E. Yasui, M. Wada, N. Takamura
200916 citations
Semantic Scholar
Studies on optically Active Amino Acids. XVIII. Studies on α-Methyl-α-amino Acids. XIV. Several Optical Properties of α-Methyl-α-amino Acids
K. Achiwa, S. Terashima, H. Mizuno, N. Takamura +3 more
197016 citations Open access
Semantic Scholar
Studies on Optically Active Amino Acids. XV. Studies on α-Alkyl-α-amino Acids. VIII. Absolute Configuration of Optically Active α-Methylserine and 2-Amino-2-methyl-3-butenoic Acid.
N. Takamura, S. Terashima, K. Achiwa, S. Yamada
196716 citations Open access
Semantic Scholar
Long-term oral administration of potassium bromate in male Syrian golden hamsters.
N. Takamura, Yuji Kurokawa, Y. Matsushima, Takayoshi Imazawa +2 more
1985The science reports of the research institutes, Tohoku University. Ser. C, Medicine. Tohoku Daigaku14 citations
Semantic Scholar
[Development of behavioral function of cerebellar hypoplasia rats as induced by cytosine arabinoside (ara-C) (author's transl)].
H. Ogura, T. Mikami, N. Takamura, Y. Suzuki +1 more
1980Nihon yakurigaku zasshi. Folia pharmacologica Japonica12 citations
Semantic Scholar
Lack of Promoting Effect of Sodium Chlorate and Potassium Chlorate in Two-Stage Rat Renal Carcinogenesis
Yuji Kurokawa, T. Imazawa, M. Matsushima, N. Takamura +1 more
198511 citations
Semantic Scholar
Synthesis of 2-substituted derivatives of diltiazem
N. Takamura, M. Morimoto, H. Kohno, Kosuke Yasuda +2 more
199010 citations Open access
Semantic Scholar
A novel method for the synthesis of 3,4-disubstitutedpyrrole-2,5-dicarboxylates from hydrazones derived from α-diazo esters
E. Yasui, M. Wada, S. Nagumo, N. Takamura
20139 citations
Semantic Scholar
Synthetic Studies of Novel 5-Azacarbapenems.
K. Oda, T. Nakano, H. Morimoto, N. Takamura
20108 citations Open access
Semantic Scholar
A new fluorogenic reagent aimed at simultaneous determination of peptides or proteins in two different samples
Hiroshi Saimaru, Mayumi Masuda, C. Toriumi, T. Santa +3 more
20057 citations
Semantic Scholar
[Twenty-eight day repeated dose toxicity testing of diphenylamine in F344 rats].
J. Yoshida, N. Shimoji, K. Furuta, N. Takamura +4 more
1989Eisei Shikenjo hokoku. Bulletin of National Institute of Hygienic Sciences7 citations
Semantic Scholar
Synthesis of 1,2,3,4-tetrahydro-beta-carboline derivatives as hepatoprotective agents. IV. Positional isomers of 1,2,3,4-tetrahydro-2-methylthiothiocarbonyl-beta-carboline-3- carboxylic acid and its 1-alkylated derivatives.
Y. Saiga, Ikuo Iijima, A. Ishida, T. Miyagishima +4 more
1987Chemical and pharmaceutical bulletin7 citations Open access
Semantic Scholar
Lack of carcinogenicity of potassium bromate after subcutaneous injection to newborn mice and newborn rats.
Y. Matsushima, N. Takamura, Takayoshi Imazawa, Yuji Kurokawa +1 more
1986The science reports of the research institutes, Tohoku University. Ser. C, Medicine. Tohoku Daigaku7 citations
Semantic Scholar
Amino Acids and Peptides. XX. Reduction of α-Substituted α-Diazo Esters. Convenient Synthesis of α-Hydrazinocarboxylic Acids and Their Derivatives from α-Amino Acids
N. Takamura, S. Yamada
19767 citations Open access
Semantic Scholar
Studies on the oxidation of "reversed nucleosides" in oxygen. II. Synthesis of homoeritadenine and threo-eritadenine.
N. Takamura, N. Taga, T. Kanno, M. Kawazu
1973Journal of Organic Chemistry7 citations
Semantic Scholar
Synthesis and evaluation of fluorogenic reagents for simultaneous detection of peptides and proteins by HPLC in two different samples.
Hiroshi Saimaru, E. Yasui, N. Takamura, K. Imai
2006Biomedical chromotography5 citations
Semantic Scholar
Effects of 2-phenyl-1,4-benzoquinone and 2,5-dihydroxybiphenyl on two-stage mouse skin carcinogenesis.
Hidetaka Sato, K. Toyoda, N. Takamura, Fumio Furukawa +5 more
1990Cancer Letters5 citations
Semantic Scholar
Long-term in vivo carcinogenicity study of nalidixic acid in CDF1 mice.
Yuji Kurokawa, Y. Matsushima, Takayoshi Imazawa, N. Takamura +3 more
1986Food and Chemical Toxicology5 citations
Semantic Scholar
A simple synthesis of eritadenine and its homologues
M. Kawazu, T. Kanno, N. Takamura, T. Mizoguchi +2 more
19705 citations
Semantic Scholar
A New Synthetic Route to 1,5-Benzothiazepines. Synthesis of Derivatives of Diltiazem.
T. Harada, M. Morimoto, M. Nagasawa, N. Takamura +3 more
19924 citations Open access
Semantic Scholar
Stereochemical Studies. XXXVI. Stereoselective Syntheses of trans- and cis-Cinnamic Acid Esters from the Phenylalanine Derivatives
N. Takamura, T. Mizoguchi, S. Yamada
19754 citations Open access
Semantic Scholar
Stereoselective syntheses of trans- and cis-cinnamic acid esters from the phenylalanine derivatives.
N. Takamura, T. Mizoguchi, S. Yamada
19734 citations
Semantic Scholar
A Novel Method for the Synthesis of 3,4-Disubstitutedpyrrole-2,5-dicarboxylates from Hydrazones Derived from α-Diazo Esters.
E. Yasui, M. Wada, S. Nagumo, N. Takamura
20133 citations
Semantic Scholar
Identification of Receptor Site of the Suppressor Isolated from Phytophthora in Festans in Potato Plasma Membrane by Using Surface Plasmonl Biosensor
N. Furuichi, Y. Suzuki, M. Matubara, M. Aoyagi +1 more
19983 citations
Semantic Scholar
An organ culture method for glandular stomach of new born rat.
Yuji Kurokawa, Michihito Takahashi, Yuko Ohno, N. Takamura +1 more
1981Tohoku journal of experimental medicine3 citations Open access
Semantic Scholar
SYNTHESIS AND HYPOCHOLESTEROLEMIC ACTIVITIES OF ERITADENINE DERIVATIVES
K. Okumura, Kazuo Matsumoto, M. Fukamizu, H. Yasuo +12 more
19743 citations
Semantic Scholar
[Carcinogenicity of potassium bromate in F-344 rats].
Y. Ohno, H. Onodera, N. Takamura, Takayoshi Imazawa +2 more
1982Eisei Shikenjo hokoku. Bulletin of National Institute of Hygienic Sciences2 citations
Semantic Scholar
Synthesis of luteinizing hormone releasing hormone (LH-RH).
Keisuke Shigezane, Susumu Hatsuno, N. Takamura, T. Mizoguchi +1 more
1975Chemical and pharmaceutical bulletin2 citations Open access
Semantic Scholar
Novel Method for Synthesis of Aryl Hydrazones from α-Diazo Esters: Scope and Limitations of Nucleophiles.
E. Yasui, M. Wada, N. Takamura
20091 citations
Semantic Scholar
New Entry for Synthesis of N-Acylhydrazones, Pyridazinones, and 1,3,4-Oxadiazin-6-ones from α-Amino Acid Esters.
E. Yasui, M. Wada, N. Takamura
20081 citations
Semantic Scholar
SHIKIMATE DERIVED METABOLITES. PART 8. CATALYZED INSERTION REACTIONS OF SUBSTITUTED α-DIAZOESTERS. A NEW SYNTHESIS OF CIS-ENOATES
N. Ikota, N. Takamura, S. D. Young, B. Ganem
19821 citations
Semantic Scholar

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Yuji Kurokawa×11
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Yuji Kurokawa — researcher profile on SciRah
Y. Hayashi×11
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E. Yasui×9
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Y. Matsushima×8
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Takayoshi Imazawa

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T. Mizoguchi×8

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Hiroshi Saimaru×4

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K. Imai — researcher profile on SciRah

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Michihito Takahashi×4

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Michihito Takahashi — researcher profile on SciRah