T. Ishikawa

发表

In vitro leishmanicidal activity of benzophenanthridine alkaloids from Bocconia pearcei and related compounds.

M. Satake, H. Fuchino, Marii Kawano, 2010, Chemical & pharmaceutical bulletin.

Facile characterization of polymer-supported reagents using cross polarization magic angle spinning method in solid state 13C-NMR.

T. Ishikawa, H. Seki, K. Yamaguchi, 2004, Chemical & pharmaceutical bulletin.

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

Takuya Kumamoto, T. Ishikawa, Tomohiro Tanaka, 1999 .

Diastereoselective preparation of a trans, trans 2, 3-dimethylchroman-4-ol skeleton: A model synthetic approach to anti-HIV-1 active Calophyllum coumarins

T. Ishikawa, Yumie Oku, K. Kotake, 1997 .

Quantitative analysis of miroestrol and kwakhurin for standardisation of Thai miracle herb ‘Kwao Keur’ (Pueraria mirifica) and establishment of simple isolation procedure for highly estrogenic miroestrol and deoxymiroestrol

Takuya Kumamoto, T. Ishikawa, S. Chansakaow, 2013, Natural product research.

Pueraria mirifica phytoestrogens improve dyslipidemia in postmenopausal women probably by activating estrogen receptor subtypes.

Y. Sawada, T. Takizawa, H. Sakamoto, 2008, The Tohoku journal of experimental medicine.

Identification of deoxymiroestrol as the actual rejuvenating principle of "Kwao Keur", Pueraria mirifica. The known miroestrol may be an artifact.

T. Ishikawa, S. Chansakaow, C. Chaichantipyuth, 2000, Journal of natural products.

Superbases for Organic Synthesis

T. Ishikawa, 2009 .

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

M. Ishibashi, T. Ishikawa, J. Tatsuzaki, 2022, Journal of Natural Medicines.

Oxidative metabolism of 5-methoxy-N,N-diisopropyltryptamine (Foxy) by human liver microsomes and recombinant cytochrome P450 enzymes.

Keita Saito, S. Narimatsu, Takuya Kumamoto, 2006, Biochemical pharmacology.

Optical resolution of (+/-)-1,2-Bis(2-methylphenyl)ethylene-1,2-diamine as a chiral framework for 2-iminoimidazolidine with 2-methylphenyl pendant and the guanidine-catalyzed asymmetric michael reaction of tert-butyl diphenyliminoacetate and ethyl acrylate.

Waka Nakanishi, Takuya Kumamoto, T. Ishikawa, 2008, Journal of Organic Chemistry.

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

T. Ishikawa, 2009 .

CHARACTERIZATION OF VARIOUS O-BISGUANIDINOBENZENE-BENZOIC ACID COMPLEXES IN SOLID AND IN SOLUTION STATES

Waka Nakanishi, Takuya Kumamoto, T. Ishikawa, 2010 .

Guanidines in Organic Synthesis

T. Ishikawa, 2006 .

The roles of amino acid residues at positions 216 and 219 in the structural stability and metabolic functions of rat cytochrome P450 2D1 and 2D2.

Y. Funae, S. Narimatsu, Takuya Kumamoto, 2008, Chemico-biological interactions.

Oxidation of 5-methoxy-N,N-diisopropyltryptamine in rat liver microsomes and recombinant cytochrome P450 enzymes.

S. Narimatsu, Takuya Kumamoto, T. Katsu, 2008, Biochemical pharmacology.

Identification of inhibitory component in cinnamon--O-methoxycinnamaldehyde inhibits CYP1A2 and CYP2E1-.

T. Ishikawa, S. Ohmori, Toshiko Watanabe, 2002, Drug metabolism and pharmacokinetics.

Involvement of SULT1A3 in elevated sulfation of 4-hydroxypropranolol in Hep G2 cells pretreated with beta-naphthoflavone.

S. Narimatsu, N. Hanioka, T. Ishikawa, 2005, Biochemical pharmacology.

Biosynthesis of β-(isoxazolin-5-on-2-yl)-l-alanine by cysteine synthase in Lathyrus sativus

M. Kobori, T. Ishikawa, I. Murakoshi, 1993 .

The effect of the selective PAF antagonist CIS-19 on PAF- and antigen-induced bronchoconstriction, microvascular leakage and bronchial hyperreactivity in guinea-pigs

H. Kuo, Chien-Huang Lin, C. Teng, 1997, Naunyn-Schmiedeberg's Archives of Pharmacology.

Effects of CIS-19, a novel PAF receptor antagonist, on PAF-induced eosinophil recruitment and enhancement of superoxide anion generation in guinea-pigs

H. Kuo, C. Teng, F. Ko, 1995, Naunyn-Schmiedeberg's Archives of Pharmacology.

Q172H Replacement Overcomes Effects on the Metabolism of Cyclophosphamide and Efavirenz Caused by CYP2B6 Variant with Arg262

Takuya Kumamoto, T. Ishikawa, I. Ishii, 2011, Drug Metabolism and Disposition.

Replacement Overcomes Effects on the Metabolism of Cyclophosphamide and Efavirenz Caused by CYP 2 B 6 Variant with Arg 262

Takuya Kumamoto, T. Ishikawa, I. Ishii, 2011 .

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

T. Ishikawa, T. Isobe, Keiko Fukuda, 2001 .

Novel polyindole film prepared via the Meisenheimer complex of indole with trinitrofluorenone

K. Hoshino, T. Ishikawa, H. Seki, 2008 .

Design, synthesis, and evaluation of polyamine-memantine hybrids as NMDA channel blockers.

Takuya Kumamoto, K. Igarashi, T. Ishikawa, 2017, Bioorganic & medicinal chemistry.

Establishment of Enzyme Immunoassay of Human Thrombomodulin in Plasma and Urine Using Monoclonal Antibodies

T. Ishikawa, H. Ishii, S. Hiraishi, 1990, Thrombosis and Haemostasis.

The structure–activity relationship between oxycoumarin derivatives showing inhibitory effects on iNOS in mouse macrophage RAW264.7 cells

K. Ueno, Takuya Kumamoto, T. Ishikawa, 2008, Journal of Natural Medicines.

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

K. Ueno, Takuya Kumamoto, T. Ishikawa, 2008, Journal of Natural Medicines.

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

T. Ishikawa, T. Isobe, 1999 .

Simultaneous analysis of six phenethylamine-type designer drugs by TLC, LC-MS, and GC-MS

Takuya Kumamoto, T. Ishikawa, T. Ohmori, 2008, Forensic Toxicology.

DISTRIBUTION OF NEURONS CONTAINING IMMUNOREACTIVITY FOR GASTRIN-RELEASING PEPTIDE (GRP), SUBSTANCE P, AND VASOACTIVE INTESTINAL POLYPEPTIDE (VIP) IN THE RAT GASTRIC WALL

N. Yanaihara, T. Ishikawa, A. Kuwahara, 1983 .

Synthesis of ortho‐Phenylenebis(guanidine) Derivatives with Potential Chirality

Waka Nakanishi, Takuya Kumamoto, T. Ishikawa, 2014 .

Exceptional Superbasicity of Bis(guanidine) Proton Sponges Imposed by the Bis(secododecahedrane) Molecular Scaffold: A Computational Study

Takuya Kumamoto, T. Ishikawa, D. Margetić, 2010 .

Syntheses of Prekinamycin and a Tetracyclic Quinone from Common Synthetic Intermediates

S. Kimura, Takuya Kumamoto, T. Ishikawa, 2011 .

Structure and synthesis of arnottin I : a 6H-benzo[d]naphtho[1,2-b]pyran-6-one derivative from a plant source

T. Ishikawa, T. Harayama, Masayuki Murota, 1993 .

2-Chloro-1,3-dimethylimidazolinium Chloride. 3. Utility for Chlorination, Oxidation, Reduction, and Rearrangement Reactions

T. Ishikawa, T. Isobe, 1999 .

Chemical constituents of Aristolochia constricta: antispasmodic effects of its constituents in guinea-pig ileum and isolation of a diterpeno-lignan hybrid.

Waka Nakanishi, Waka Nakanishi, Takuya Kumamoto, 2008, Journal of natural products.

Recent Advances on Antitumor-Active Benzo[c]phenanthridine Alkaloids

T. Ishikawa, H. Ishii, 1999 .

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

Takuya Kumamoto, T. Ishikawa, H. Seki, 2001 .

New Phenyl propanoids having weak piscicidal action and the related compound: wutaiensol, wutaiensal, wutaialdehyde, and methyl demethoxywutaiensate

I. Chen, T. Ishikawa, Sheng-Teh Lu, 1982 .

Studies on the chemical constituents of rutaceous plants-XLI. Absolute configuration of rutaretin methyl ether

T. Ishikawa, F. Sekiguchi, H. Ishii, 1981 .

Enantioselective construction of a polyhydroxylated pyrrolidine skeleton from 3-vinylaziridine-2-carboxylates: synthesis of (+)-DMDP and a potential common intermediate for (+)-hyacinthacine A1 and (+)-1-epi-australine.

Takuya Kumamoto, T. Ishikawa, H. Masu, 2012, The Journal of organic chemistry.

Synthesis of the Aziridinomitosene Skeleton by Application of Guanidinium Ylide‐Mediated Aziridination

H. Kojima, Waka Nakanishi, Takuya Kumamoto, 2013 .

Enantioselective total synthesis of anti HIV-1 active (+)-calanolide A through a quinine-catalyzed asymmetric intramolecular oxo-Michael addition

Takuya Kumamoto, T. Ishikawa, Tomohiro Tanaka, 2000 .

Asymmetric crystallization of bisguanidinobenzene derivatives

Waka Nakanishi, T. Ishikawa, K. Yamaguchi, 2007 .

Cochinolide, a new gamma-alkylidene bicyclic butenolide with antiviral activity, and its beta-glucopyranoside from Homalium cochinchinensis.

T. Ishikawa, K. Nishigaya, H. Uchikoshi, 1998, Journal of natural products.

Concise synthesis of arnottin I and (-)-arnottin II.

T. Ishikawa, F. Konno, K. Yamaguchi, 2006, The Journal of organic chemistry.

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

Chin‐Chung Wu, Fan Lee, C. Duh, 2005, Planta medica.

Synthetic studies toward miroestrols: trials for elongation of the methyl group of 5-substituted 2-methyl-2-cyclohexanone to 3-methyl-2-butenyl function

Takuya Kumamoto, T. Ishikawa, K. Yamaguchi, 2009 .

Synthetic Studies on Kinamycin Antibiotics: Synthesis of a Trioxygenated Benz[f]indenone and its Diels–Alder Reaction to a Kinamycin Skeleton

Takuya Kumamoto, T. Ishikawa, Yasuo. Kitani, 2002 .

Synthetic studies on kinamycin antibiotics: elaboration of a highly oxygenated D-ring

Takuya Kumamoto, T. Ishikawa, K. Yamaguchi, 2000 .

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

T. Ishikawa, T. Isobe, 1999 .

Cesium Fluoride-Mediated Claisen Rearrangement of Aryl Propargyl Ether. Exclusive Formation of 2-Methylarylfuran and Its Availability as a Masked Salicylaldehyde

Masahiro Suzuki, T. Ishikawa, S. Ueki, 1992 .

Amidines in Organic Synthesis

Takuya Kumamoto, T. Ishikawa, 2009 .

Bifunctional Guanidine Hydroxide and Related Organocatalysts

T. Ishikawa, 2015 .

Catalytic Performance of Polystyrene‐Bound ChibaG Derivatives as Guanidine Organobases in Asymmetric Michael Additions

Makoto Yoshida, Takuya Kumamoto, T. Ishikawa, 2014 .

Access to the nicotine system by application of a guanidine-catalyzed asymmetric Michael addition of diphenyliminoacetate with 3-pyridyl vinyl ketone

Takuya Kumamoto, T. Ishikawa, Gang Zhang, 2010 .

SEMI-QUANTITATIVE APPROACHES TO THE COORDINATION ABILITY OF o-BISGUANIDINOBENZENES WITH METAL SALTS

Kazuo T. Suzuki, K. Suda, Waka Nakanishi, 2009 .

Guanidine‐Catalyzed Asymmetric Synthesis of 2,2‐Disubstituted Chromane Skeletons by Intramolecular Oxa‐Michael Addition

Waka Nakanishi, Takuya Kumamoto, T. Ishikawa, 2008 .

Approaches to the Potential Chirality of Bisguanidinobenzenes by Dynamic NMR Analysis

Waka Nakanishi, T. Ishikawa, D. Margetić, 2007 .

Guanidine‐Catalyzed Asymmetric Trimethylsilylcyanation of Carbonyl Compounds

Takuya Kumamoto, T. Ishikawa, T. Isobe, 2005 .

o-bisguanidinobenzene, a powerful hydrogen acceptor: Crystal structures of organic complexes with benzoic acid, phenol, and benzyl alcohol

T. Ishikawa, K. Yamaguchi, M. Kawahata, 2005 .

Polymer-supported and polymeric chiral guanidines: Preparation and application to the asymmetric Michael reaction of iminoacetate with methyl vinyl ketone

T. Ishikawa, Disadee Wannaporn, 2005, Molecular Diversity.

Modified guanidines as chiral auxiliaries.

T. Ishikawa, T. Isobe, 2002, Chemistry.

Studies on the chemical constituents of rutaceous plants. Part 62. Efficient synthesis of fagaronine, a phenolic benzo[c]phenanthridine alkaloid with antileukaemic activity

I. Chen, T. Ishikawa, H. Ishii, 1987 .

Cesium Fluoride-mediated Claisen Rearrangements of Phenyl Propargyl Ethers: Substituent Effects of an ortho-Alkoxy Group on the Benzene Ring or Modified Propargyl Residues

A. Mizutani, T. Ishikawa, Atsuya Takami, 1997 .

Cesium fluoride-mediated claisen rearrangement of aryl propargyl ether and its application to the synthesis of chelerythrine.

Masahiro Suzuki, T. Ishikawa, T. Harayama, 1990 .

Anti HIV-1 Active Calophyllum Coumarins:Distribution,Chemistry,and Activity

T. Ishikawa, 2000 .

Anti HIV‐1 Active Calophyllum Coumarins: Distribution, Chemistry, and Activity

T. Ishikawa, 2000 .

Chemistry of Anti HIV-1 Active Calophyllum Coumarins

T. Ishikawa, 1998 .

Studies on the constituents of seeds of Pachyrrhizus erosus and their anti herpes simplex virus (HSV) activities.

V. Lipipun, N. Ruangrungsi, T. Ishikawa, 2002, Chemical & pharmaceutical bulletin.

AZIRIDINE-2-CARBOXYLATES : PREPARATION, NUCLEOPHILIC RING OPENING, AND RING EXPANSION

T. Ishikawa, 2012 .

Photo-sensitized oxygenation of phenethylguanidoxime: a possible chemical model for the biological oxidation of Nω-hydroxy-L-arginine to L-citrulline

Kunio Sato, T. Sakamaki, T. Ishikawa, 1996 .

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

C. Teng, I. Chen, T. Ishikawa, 2000, Planta medica.

Coumarins and anti-platelet aggregation constituents from Zanthoxylum schinifolium.

C. Teng, F. Ko, I. Chen, 1995, Phytochemistry.

Synthesis of toddacoumaquinone, a coumarin-naphthoquinone dimer, and its antiviral activities.

T. Ishikawa, K. Kotake, H. Ishii, 1995, Chemical & pharmaceutical bulletin.

Dihydroxylation of functionalized coumarin derivatives

Waka Nakanishi, Takuya Kumamoto, T. Ishikawa, 2009 .

Regioselective boron trichloride-mediated aromatic Claisen rearrangement of resorcinol allyl ethers

Takuya Kumamoto, T. Ishikawa, Fumihiro Ito, 2005 .

The first total synthesis of kwakhurin, a characteristic component of a rejuvenating plant, "kwao keur": toward an efficient synthetic route to phytoestrogenic isoflavones.

T. Ishikawa, Toshiko Watanabe, Y. Higuchi, 2005, Organic & biomolecular chemistry.

Guanidines as a nitrogen source for direct conversion of epoxides to aziridines.

Takuya Kumamoto, T. Ishikawa, Y. Tsuchiya, 2004, The Journal of organic chemistry.

6.7 C–C Bond Formation: Cyanation

T. Ishikawa, 2012 .

Synthetic approaches towards phorbols via the ultra-high-pressure mediated intramolecular Diels–Alder reaction of furans (IMDAF): effect of furan substitution

M. Drew, L. Harwood, T. Ishikawa, 1999 .

Constituents of the root wood of Zanthoxylum wutaiense with antitubercular activity.

I. Chen, T. Ishikawa, C. Peng, 2008, Journal of natural products.

[Studies on the chemical constituents of rutaceous plants. XXXIII. The chemical constituents of Xanthoxylum arnottianum Maxim. (3). Isolation of the chemical constituents of the bark of root and stem (author's transl)].

T. Ishikawa, J. Haginiwa, H. Ishii, 1974, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

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.

K. Nishikawa, V. Lipipun, N. Ruangrungsi, 2003, Chemical & pharmaceutical bulletin.

Diels-Alder reactions using 4,7-dioxygenated indanones as dienophiles for regioselective construction of oxygenated 2,3-dihydrobenz[f]indenone skeleton

Waka Nakanishi, Takuya Kumamoto, T. Ishikawa, 2008, Beilstein journal of organic chemistry.

The absolute stereochemistries of (+)-toddalolactone and its related chiral coumarins from Toddalia asiatica(L.) Lam. (T. aculeata Pers.) and their optical purities

T. Ishikawa, H. Ishii, J. Kobayashi, 1992 .

Unprecedented 8,9'-neolignans: enantioselective synthesis of possible stereoisomers for structural determination.

I. Chen, Hsun-Shuo Chang, T. Ishikawa, 2014, Journal of natural products.

Secondary Metabolites from the Root Wood of Zanthoxylum wutaiense and Their Antitubercular Activity

I. Chen, T. Ishikawa, C. Peng, 2011, Chemistry & biodiversity.

STUDIES ON THE CHEMICAL CONSTITUENTS OF RUTACEOUS PLANTS. PART XLVII. NEW PHENYL PROPANOIDS HAVING WEAK PISCICIDAL ACTION AND RELATED COMPOUNDS. WUTAIENSOL, WUTAIENSAL, WUTAIALDEHYDE, AND METHYL DEMETHOXYWUTAIENSATE

I. Chen, T. Ishikawa, Sheng-Teh Lu, 1983 .

Studies on the Chemical Constituents of Rutaceous Plants. XLVI. The Chemical Constituents of Xanthoxylum integrifoliolum (MERR.) MERR. (Fagara integrifoliola MERR.) II. Structural Establishment of Integriquinolone, a New Phenolic Quinolone

K. Koyama, I. Chen, T. Ishikawa, 1982 .

Studies on the Chemical Constituents of Rutaceous Plants. XLII. The Chemical Constituents of Xanthoxylum inerme KOIDZ. (Fagara boninensis KOIDZ.). (2). Isolation of Chemical Constituents of the Wood of Root

T. Ishikawa, J. Haginiwa, H. Ishii, 1981 .

[Studies on the chemical constituents of Rutaceous plants. XXXI. The chemical constituents of Xanthoxylum cuspidatum Champ. (Fagara cuspidata Engl.) (author's transl)].

T. Ishikawa, S. Lu, H. Ishii, 1976, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

Cuspidiol: A new monomeric phenyl propanoid

T. Ishikawa, H. Ishii, Chen Ih-Sheng, 1973 .

Studies on the Chemical Constituents of Xanthoxylum nitidum (Roxb.) D. C. (Fagara nitida Roxb.). III. The Chemical Constituents of the Wood.

I. Chen, T. Ishikawa, H. Seki, 1995 .

Concise synthesis of anti-HIV-1 active (+)-inophyllum B and (+)-calanolide A by application of (-)-quinine-catalyzed intramolecular oxo-Michael addition.

Takuya Kumamoto, T. Ishikawa, T. Ikeda, 2004, The Journal of organic chemistry.

Ring-opening reaction of unactivated 3-arylaziridine-2-carboxylates with nitrile reagents

Takuya Kumamoto, T. Ishikawa, K. Yamaguchi, 2010 .

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

Y. Kuo, C. Teng, Ya-Ling Chang, 2003, Planta medica.

Total synthesis of 12-methoxydihydrochelerythrine and anti-tumour activity of its quaternary base: toward an efficient synthetic route for 12-alkoxybenzo[c]phenanthridine bases via naphthoquinone monooxime from 2-benzofuranyl-1-tetralone derivative.

T. Ishikawa, Toshiko Watanabe, Y. Ohashi, 2003, Organic & biomolecular chemistry.

Enantioselective synthesis of chelidonine, a B/C-cis-11-hydroxyhexahydrobenzo[c]phenanthridine alkaloid

Takuya Kumamoto, T. Ishikawa, Mikinao Ito, 2011 .

Stereoselective total synthesis of (±)-homochelidonine

Makoto Yoshida, T. Ishikawa, Toshiko Watanabe, 2002 .

Ring‐Opening Reactions of 3‐Aryl‐1‐benzylaziridine‐2‐carboxylates and Application to the Asymmetric Synthesis of an Amphetamine‐Type Compound

Takuya Kumamoto, T. Ishikawa, K. Yamaguchi, 2007 .

Synthesis of enantiomeric 4-hydroxypropranolols from 1,4-dihydroxynaphthalene

S. Narimatsu, Takuya Kumamoto, T. Ishikawa, 2001 .

Enantioselective formal synthesis of (-)-podophyllotoxin from (2S,3R)-3-arylaziridine-2-carboxylate.

T. Ishikawa, N. Suzuki, Masato Takahashi, 2013, The Journal of organic chemistry.

Synthesis of (−)-benzolactam-V8 by application of asymmetric aziridination

Takuya Kumamoto, T. Ishikawa, N. Suzuki, 2012 .

Guanidinium ylide mediated aziridination: identification of a spiro imidazolidine-oxazolidine intermediate.

T. Ishikawa, K. Yamaguchi, M. Kawahata, 2006, The Journal of organic chemistry.

Chirality transfer from guanidinium ylides to 3-alkenyl (or 3-alkynyl) aziridine-2-carboxylates and application to the syntheses of (2R,3S)-3-hydroxyleucinate and D-erythro-sphingosine.

T. Ishikawa, Wannaporn Disadee, 2005, The Journal of organic chemistry.

Mechanistic approaches to asymmetric synthesis of aziridines from guanidinium ylides and aryl aldehydes

T. Ishikawa, T. Haga, 2005 .

Simple preparation of chiral 1,3-dimethyl-2-iminoimidazolidines (monocyclic guanidines) and applications to asymmetric alkylative esterification

T. Ishikawa, T. Isobe, Keiko Fukuda, 1998 .

Total synthesis of (±)-methyl-kinamycin C

Takuya Kumamoto, T. Ishikawa, H. Seki, 2007 .

Aryl-β-C-glucosidation using glucal boronate: application to the synthesis of tri-O-methylnorbergenin

T. Ishikawa, S. Nomura, Eiji Kawanishi, 2012 .

Organic Superbases: The Concept at a Glance

L. Harwood, T. Ishikawa, 2013, Synlett.

Guanidine chemistry.

T. Ishikawa, 2010, Chemical & pharmaceutical bulletin.

Nitrosation of Phenolic Substrates under Mildly Basic Conditions: Selective Preparation of p-Quinone Monooximes and Their Antiviral Activities.

T. Ishikawa, Toshiko Watanabe, H. Tanigawa, 1996, The Journal of organic chemistry.

Benzo[c]phenanthridine bases and their antituberculosis activity

T. Ishikawa, 2001, Medicinal research reviews.

Abnormal Fischer Indolization and Its Related Compounds. XXII. : Fischer Indolization of Ethyl Pyruvate 2-(2-Chloro- and 2, 6-Dichlorophynyl)methylhydrazones

T. Ishikawa, Y. Murakami, H. Ishii, 1990 .

Mild air-oxidation of 1,3-dicarbonyl compounds with cesium salts: Novel α-hydroxylation accompanied by partial hydrolysis of malonate derivatives

T. Ishikawa, Toshiko Watanabe, 1999 .

N-Cyclohexyl amides and a dimeric coumarin from formosan Toddalia asiatica

I. Chen, Chin-Teng Chang, T. Ishikawa, 1997 .

Toddalosin, a New Biscoumarin, from Toddalia asiatica (L.) LAM.(T. aculeate PERS.)

T. Ishikawa, K. Yamaguchi, H. Ishii, 1993 .

[Studies on the chemical constituents of Rutaceae++ plants. LXVI. The chemical constituents of Toddalia asiatica (L.) Lam. (T. aculeata Pers.). (1). Chemical constituents of the root bark].

T. Ishikawa, J. Kobayashi, M. Ishikawa, 1991, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

Neolignans and phenylpropanoids from the roots of Piper taiwanense and their antiplatelet and antitubercular activities.

Chin‐Chung Wu, I. Chen, M. Cheng, 2013, Phytochemistry.

Roads to New Guanidine Chemistry from 2-Imidazolidinones Through 2-Chloroamidinium Derivatives

T. Ishikawa, 2006 .

Guanidine-catalyzed Asymmetric Addition Reactions: Michael Reaction of Cyclopentenone with Dibenzyl Malonates and Epoxidation of Chalcone

Takuya Kumamoto, Ikue Miyamoto, T. Ishikawa, 2005 .

The chemical composition of Murraya paniculata. The structure of five new coumarins and one new alkaloid and the stereochemistry of murrangatin and related coumarins

T. Ishikawa, C. Ito, H. Furukawa, 1990 .

Isolation of β-Sitosterol and digalactopyranosyl-diacylglyceride from Citrus hystrix, a thai traditional herb, as pancreatic lipase inhibitors

Waka Nakanishi, K. Ueno, Takuya Kumamoto, 2009 .

Photochemistry of 2-(3,4,5-trimethoxyphenyl)-4-(3,4-methylenedioxyphenyl)-4-oxo-2-butenonitrile (β-cyanochalcone) and its related compounds

T. Ishikawa, T. Harayama, Yasushi Saito, 1994 .

ent-halimane diterpenes and a guaiane sesquiterpene from Cladogynos orientalis.

N. Ruangrungsi, T. Ishikawa, B. Therrien, 2005, Journal of natural products.

Anti-platelet aggregation constituents from Formosan Toddalia asiatica.

C. Teng, I. Chen, T. Ishikawa, 1998, Phytochemistry.

Benzo[c]phenanthridine bases and their antituberculosis activity

T. Ishikawa, 2001, Medicinal research reviews.

Isolation of salicin derivatives from Homalium cochinchinensis and their antiviral activities.

I. Chen, T. Ishikawa, K. Takami, 2004, Journal of natural products.

Bishordeninyl Terpene Alkaloids from Zanthoxylum Integrifoliolum

I. Chen, T. Ishikawa, T. Harayama, 2000 .

Chemical constituents of Pterocaulon redolens

N. Ruangrungsi, T. Ishikawa, Toshiko Watanabe, 2003 .

A simple and effective preparation of quercetin pentamethyl ether from quercetin

R. Inagi, T. Ohwada, T. Ishikawa, 2018, Beilstein journal of organic chemistry.

Cytotoxic activity of natural labdanes and their semi-synthetic modified derivatives from Croton oblongifolius.

T. Ishikawa, A. Petsom, S. Roengsumran, 2003, Planta medica.

Chemical and Cytotoxic Constituents from the Stem of Machilus zuihoensis

B. Jayaprakasam, Jeh-Jeng Wang, I. Chen, 2002 .

Coumarinolignans from the Root of Formosan Antidesma pentandrum var. barbatum

I. Chen, M. Cheng, T. Ishikawa, 2004 .

Biologically active constituents of Aglaia erythrosperma

Takuya Kumamoto, T. Ishikawa, R. Suttisri, 2011, Natural product research.

A new sesquiterpene and other terpenoid constituents of Chisocheton penduliflorus

Takuya Kumamoto, T. Ishikawa, R. Suttisri, 2008, Archives of pharmacal research.

Quantification of terpene trilactones in Ginkgo biloba with a 1H NMR method

M. Tanokura, T. Ishikawa, T. Miyakawa, 2018, Journal of Natural Medicines.

Synthetic approaches to phorbols via the intramolecular Diels–Alder reactions of furans (IMDAF): oxygen bridge cleavage and high stereocontrol during cycloaddition using α′-benzylthio substituted furan substrates

L. Harwood, D. Watkin, T. Ishikawa, 1991 .

Practical Enzymatic Desymmetrization of 2‐(Ethoxycarbonyl)propane‐1,3‐diyl Dihexanoate and Model Cyclization for the A–D Ring System of Lysergic Acid

Takuya Kumamoto, T. Ishikawa, Sachiho Miyata, 2007 .

Model Construction for the A–B–C Ring System of Lysergic Acid via Vilsmeier–Haack‐Type Cyclization of 1H‐Indole‐4‐propanoic Acid Derivatives

T. Ishikawa, Toshiko Watanabe, Masayuki Kurokawa, 2007 .

Studies on the chemical constituents of rutaceous plants. LX. Development of a versatile method for syntheses of the antitumor benzo[c]phenanthridine alkaloids. (9). Efficient syntheses and antitumor activities of nitidine and related nonphenolic benzo[c]phenanthridine alkaloids.

A. Hoshi, T. Ishikawa, K. Kuretani, 1985, Chemical & pharmaceutical bulletin.

Effective total synthesis of fagaronine: Antileukemic phenolic benzo(c)phenanthridine alkaloid.

I. Chen, T. Ishikawa, H. Ishii, 1983 .

Alkaloids from trunk bark of Hernandia nymphaeifolia

I. Chen, T. Ishikawa, Jih-Jung Chen, 1996 .

Guanidinium Ylide Mediated Aziridination from Arylaldehydes: Scope and Limitations in the Formation of Unactivated 3-Arylaziridine-2-carboxylates

T. Ishikawa, Masato Takahashi, Y. Hayashi, 2014, Synthesis.

Angiogenesis inhibitors identified by cell-based high-throughput screening: synthesis, structure-activity relationships and biological evaluation of 3-[(E)-styryl]benzamides that specifically inhibit endothelial cell proliferation.

H. Koyano, T. Ishikawa, N. Shimma, 2012, Bioorganic & medicinal chemistry.

Studies on the chemical constituents of rutaceous plants. LI. Development of a versatile method for the synthesis of antitumor-active benzo(c)phenanthridine alkaloids. 3. Detailed examination of the synthesis of 2-aryl-1-formamido-1,2,3,4-tetrahydronaphthalene from 2-aryl-1-tetralone derivatives.

T. Ishikawa, K. Harada, T. Ishida, 1983 .

Structural establishment of arnocoumarin and arnottiacoumarin due to chemical modification of marmesin and rutaretin methyl ether.

T. Ishikawa, Ishii Hisashi, 1978 .

Studies on Amino Acids. VII

I. Chibata, T. Ishikawa, S. Yamada, 1957 .

Studies on the Chemical Constituents of Xanthoxylum nitidum (ROXB). D. C. (Fagara nitida ROXB.). II. Examination of the Chemical Constituents by Membrane Filtration : Identification of Magnoflorine, a Water-Soluble Quaternacy Aporphine Alkaloid

T. Ishikawa, H. Ishii, I. Chen, 1994 .

Toddaquinoline from formosan Toddalia asiatica

I. Chen, T. Ishikawa, Shwu-Jen Wu, 1993 .

TODDACOUMAQUINONE, A UNIQUE COUMARIN-NAPHTHOQUINONE DIMER, FROM TODDALIA ASIATICA (L.) LAM. (T. ACULEATA PERS.)

T. Ishikawa, H. Seki, H. Ishii, 1992 .

Toddacoumalone, a novel mixed dimer of coumarin and quinolone from Toddalia asiatica (L.) Lam. (T. aculeata pers.)☆

T. Ishikawa, H. Ishii, J. Kobayashi, 1991 .

Mechanism of nanoparticle formation from ternary coground phenytoin and its derivatives.

Takuya Kumamoto, K. Higashi, K. Moribe, 2012, Journal of pharmaceutical sciences.

[Studies on the chemical constituents of rutaceous plants. LIX. The chemical constituents of Xanthoxylum nitidum (Roxb.) D.C. (Fagara nitida Roxb.) (1) Examination of the alkaloidal fraction of the bark].

I. Chen, T. Ishikawa, T. Tohjoh, 1984, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

TODDALENONE : A NEW COUMARIN FROM TODDALIA ASIATICA (T. ACULEATA) STRUCTURAL ESTABLISHMENT BASED ON THE CHEMICAL CONVERSION OF LIMETTIN INTO TODDALENONE

T. Ishikawa, H. Ishii, J. Kobayashi, 1983 .

Solvent effects on stereoselectivity in 2,3-dimethyl-4-chromanone cyclization by quinine-catalyzed asymmetric intramolecular oxo-Michael addition

Takuya Kumamoto, T. Ishikawa, Tomohiro Tanaka, 2000 .

Triphosgene: A Versatile Reagent for Bischler-Napieralski Reaction

Makoto Yoshida, T. Ishikawa, Tatsuru Saito, 2001 .

Structure and Synthesis of Arnottin I: A 6H‐Benzo(d)naphtho(1,2‐b) pyran‐6‐one Derivative from a Plant Source.

T. Ishikawa, T. Harayama, Masayuki Murota, 2010 .

Arnottin II, a unique spiro compound composed of a 3, 4-dehydro-1-tetralone and a phthalide skeleton: Is it biosynthetically related to a benzo[c]phenanthridine alkaloid ?

T. Ishikawa, Toshiko Watanabe, T. Harayama, 1995 .

Total Synthesis of Chelerythrine, a Benzo[c]phenanthridine Alkaloid

T. Ishikawa, H. Ishii, S. Takeda, 1992 .

Synthetic studies on jadomycins: synthesis of dimethyljadomycin A

Waka Nakanishi, Takuya Kumamoto, T. Ishikawa, 2010 .

Chemistry of Structurally Confused Kinamycins

S. Ōmura, Takuya Kumamoto, T. Ishikawa, 2004 .

Basic intramolecular acylation. Synthesis of 2-aryl-1-tetralones bearing isopropoxy or benzyloxy groups, synthetic key intermediates for phenolic antileukaemic benzo[c]phenanthridine alkaloids, from 2,4-diarylbutyric acid derivatives

I. Chen, T. Ishikawa, S. Ueki, 1987 .

Absolute ordered cluster formation of an o-bisguanidinobenzene-benzoic acid complexes.

T. Ishikawa, H. Seki, K. Yamaguchi, 2006, Chemical & pharmaceutical bulletin.

Studies on the chemical constituents of rutaceous plants. LXIV. Structural establishment of oxyterihanine, a phenolic benzo[c]phenanthridone alkaloid. Syntheses of phenolic benzo[c]phenanthridine alkaloids, terihanine and isoterihanine, and related compounds.

I. Chen, T. Ishikawa, S. Ueki, 1987 .

Application of ascorbic acid 2-glucoside as a solubilizing agent for clarithromycin: solubilization and nanoparticle formation.

Takuya Kumamoto, K. Moribe, Y. Inoue, 2007, International journal of pharmaceutics.

AILANTHOIDINE, A NOVEL BENZO[C]PHENANTHRIDINE ALKALOID WITH A CYANOPYRIDINE PENDANT, FROM A XANTHOXYLUM SPECIES

K. Koyama, T. Ishikawa, T. Harayama, 1991 .

Complexability of o-bisguanidinobenzenes with arsenic and phosphoric acids in solution and solid states, and the potential use of their immobilized derivatives as solid base ligands for metal salts and arsenic acid

Kazuo T. Suzuki, K. Suda, Waka Nakanishi, 2010, Molecular Diversity.

1,8‐Bis(dimethylethyleneguanidino)naphthalene

T. Ishikawa, K. Yamaguchi, M. Kawahata, 2006 .

2,2′-o-Phenylenebis(1,3-dimethylguanidine)

T. Ishikawa, K. Yamaguchi, M. Kawahata, 2006 .

Isolation of acridone alkaloids and N-[(4-monoterpenyloxy)phenylethyl]-substituted sulfur-containing propanamide derivatives from Glycosmis parva and their anti-herpes simplex virus activity.

V. Lipipun, Takuya Kumamoto, N. Ruangrungsi, 2009, Chemical & pharmaceutical bulletin.

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

T. Ishikawa, N. Uchiyama, R. Arai, 2022, Journal of Natural Medicines.

Isolation of Acridone Alkaloids and N-[(4-Monoterpenyloxy)phenylethyl]-Substituted Sulfur-Containing Propanamide Derivatives from Glycosmis parva and Their Antiherpes Simplex Virus Activity.

V. Lipipun, Takuya Kumamoto, N. Ruangrungsi, 2010 .

Insight into estrogenicity of phytoestrogens using in silico simulation.

M. Takiguchi, Y. Sowa, Waka Nakanishi, 2009, Biochemical and biophysical research communications.

Isoflavonoids from Pueraria mirifica and their estrogenic activity.

T. Ishikawa, S. Chansakaow, Y. Higuchi, 2000, Planta medica.

[58] ε-Lysine acylase from Achromabacter pestifer

T. Tosa, I. Chibata, T. Ishikawa, 1970 .

Studies on the ɛ-Lysine Acylase: Part III*. A Surveys of the ɛ-Lysine Acylase Activity in Soil Organisms**

T. Tosa, I. Chibata, T. Ishikawa, 1962 .

Studies on Amino Acids. XIII

T. Tosa, I. Chibata, T. Ishikawa, 1960 .

Studies on Amino Acids. XIV

T. Tosa, I. Chibata, T. Ishikawa, 1960 .

Studies on Amino Acids. XIII:A Survey of the ε-Lysine Acylase Activity in Microorganisms

T. Tosa, I. Chibata, T. Ishikawa, 1960 .

Studies on Amino Acids

I. Chibata, T. Ishikawa, A. Watanabe, 1957 .

Preparation of the methyl ester of hyaluronan and its enzymatic degradation.

R. Linhardt, F. Avci, T. Ishikawa, 2005, Carbohydrate research.

Studies on the chemical constituents of Rutaceous plants. LV. The development of a versatile method for the synthesis of antitumor-active benzo[c]phenanthridine alkaloids. (5). A new method for quaternization of the benzo[c]phenanthridine nucleus.

T. Ishikawa, M. Ishikawa, H. Ishii, 1984, Chemical and pharmaceutical bulletin.

STUDIES ON THE CHEMICAL CONSTITUENTS OF RUTACEOUS PLANTS. LV. THE DEVELOPMENT T OF A VERSATILE METHOD FOR THE SYNTHESIS OF ANTITUMOR‐ACTIVE BENZO(C)PHENANTHRIDINE ALKALOIDS. (5). A NEW METHOD FOR QUATERNIZATION OF THE E BENZO(C)PHENANTHRIDINE NUCLEUS

T. Ishikawa, M. Ishikawa, H. Ishii, 1985 .

Photochemistry of 2-(3,4,5-Trimethoxyphenyl)-4-(3,4- methylenedioxyphenyl)-4-oxo-2-butenonitrile (β-Cyanochalcone) and Its Related Compounds.

T. Ishikawa, T. Harayama, Yasushi Saito, 2010 .

On the substrate specificity of the bacterial ɛ-lysine acylase

T. Tosa, I. Chibata, T. Ishikawa, 1964 .

Studies on Amino Acids. VIII

I. Chibata, T. Ishikawa, S. Yamada, 1957 .

Studies on the chemical constituents of rutaceous plants. XLIX. Development of a versatile method for the synthesis of antitumor-active benzo(c)phenanthridine alkaloids. 1. Preparation of various 2,4-bisaryl-4-oxobutyronitriles and 2,4-bisaryl-4-oxobutyramides.

I. Chen, T. Ishikawa, Toshiko Watanabe, 1983 .

Internal Calibrant for an Exact Mass Measurement in Electrospray Ionization Mass Spectrometry

T. Ishikawa, K. Yamaguchi, S. Sakamoto, 1999 .

Total Synthesis of (.+-.)-Methyl-kinamycin C.

Takuya Kumamoto, T. Ishikawa, H. Seki, 2007 .

Isolation of new isoflavonolignans, butesuperins A and B, from A thai miracle herb, Butea superba

S. Narimatsu, T. Ishikawa, K. Furihata, 2005 .

Antidepressant-like effect of Butea superba in mice exposed to chronic mild stress and its possible mechanism of action.

Kinzo Matsumoto, T. Ishikawa, Y. Higuchi, 2014, Journal of ethnopharmacology.

Butea superba-induced amelioration of cognitive and emotional deficits in olfactory bulbectomized mice and putative mechanisms underlying its actions.

Kinzo Matsumoto, T. Ishikawa, Y. Higuchi, 2014, Journal of pharmacological sciences.

Isolation of New Isoflavonolignans, Butesuperins A and B, from a Thai Miracle Herb, Butea superba.

S. Narimatsu, T. Ishikawa, K. Furihata, 2005 .

Nω-Hydroxyagmatine: A Novel Substance Causing Endothelium-Dependent Vasorelaxation

T. Sakamaki, T. Ishikawa, K. Sato, 1995 .

Isolation of pyropheophorbide a from the leaves of Atalantia monophylla (ROXB.) CORR. (Rutaceae) as a possible antiviral active principle against herpes simplex virus type 2.

N. Ruangrungsi, T. Ishikawa, S. Chansakaow, 1996, Chemical & pharmaceutical bulletin.

Synthesis, physical properties, and cytotoxicity of Nitroxyl-Aziridine hybrid

K. Hoshino, K. Ueno, Takuya Kumamoto, 2010 .

Synthesis of jadomycin A and related jadomycin aglycons: structural re-examination of jadomycins S and T may be needed

Takuya Kumamoto, T. Ishikawa, N. Suzuki, 2012 .

Studies on the Chemical Constituents of Xanthoxylum nitidum (Roxb.) D. C. (Fagara nitida Roxb.). Part 3. The Chemical Constituents of the Wood.

I. Chen, T. Ishikawa, H. Seki, 1996 .

Optical Resolution of 1,2-Diamino Compounds Using Advanced Marfey's Method

Waka Nakanishi, Takuya Kumamoto, T. Ishikawa, 2009 .

Biosynthesis of beta-(isoxazolin-5-on-2-yl)alanine, the precursor of the neurotoxic amino acid beta-N-oxalyl-L-alpha,beta-diaminopropionic acid.

T. Ishikawa, I. Murakoshi, F. Lambein, 1991, Chemical & pharmaceutical bulletin.

Synthesis and pharmacological activity of O-(5-isoxazolyl)-L-serine.

T. Ishikawa, T. Kusama, T. Sekine, 2000, Chemical & pharmaceutical bulletin.

New Labdane-Type Diterpenoids from Croton oblongifolius and Their Cytotoxic Activity

T. Ishikawa, A. Petsom, S. Puthong, 2005 .

Cesium Fluoride-Induced Intramolecular Michael Addition: Highly Diastereoselective Ring Construction of a trans-2,3-Dimethylchroman-4-one.

T. Ishikawa, Yumie Oku, K. Kotake, 1996, Journal of Organic Chemistry.

Cesium Fluoride‐Induced Intramolecular Michael Addition: Highly Diastereoselective Ring Construction of a trans‐2,3‐Dimethylchroman‐4‐ one.

T. Ishikawa, Yumie Oku, K. Kotake, 1997 .

Arnottianamide and isoarnottianamide : The structural establishment due to chemical conversion from the known benzo[C]phenanthridine alkaloids by the novel baeyer-villiger like oxidation of an immonium group

I. Chen, T. Ishikawa, Sheng-Teh Lu, 1976 .

Quantification of terpene trilactones in Ginkgo biloba with a 1H NMR method

M. Tanokura, T. Ishikawa, T. Miyakawa, 2018, Journal of Natural Medicines.

Development of the Novel Reactions Discovered in the Studies on the Anti-Leukemic Compounds

T. Ishikawa, Y. Murakami, H. Ishii, 1977 .

Concise Syntheses of the Oxo Derivatives of Benzo[c]phenanthridine Bases by N-Deformylated Cyclization Based on Vilsmeier-Haack Reaction

I. Chen, T. Ishikawa, Atsuya Takami, 1995 .

ミカン科植物成分の研究(第44報)台湾産ネワタノキXanthoxylum integrifoliolum(MERR.)MERR.(Fagara integrifoliola MERR.)の成分検索その1 根木質部の成分

I. Chen, T. Ishikawa, Sheng-Teh Lu, 1982 .

Concise Syntheses of the Oxo Derivatives of Benzo(c)phenanthridine Bases by N-Deformylated Cyclization Based on Vilsmeier-Haack Reaction.

I. Chen, T. Ishikawa, Atsuya Takami, 1995 .

Design of New Scaffolds for Increased Superbasicity of Bisguanidine Proton Sponges

Takuya Kumamoto, T. Ishikawa, D. Margetić, 2010 .

N.OMEGA.-hydroxy-L-arginine, an intermediate in nitric oxide synthesis, is more potent than L-arginine for endothelium-dependent vascular relaxation.

R. Nagai, H. Sakamoto, Kunio Sato, 1997 .

H. Koyano, T. Ishikawa, N. Shimma, 2012, Bioorganic & medicinal chemistry.

Quercetin 3,5,7,3′,4′-pentamethyl ether from Kaempferia parviflora directly and effectively activates human SIRT1

K. Nagata, T. Terada, K. Shimizu, 2021, Communications Biology.

New 2-aryl-1,4-naphthoquinone-1-oxime methyl ether compound induces microtubule depolymerization and subsequent apoptosis.

T. Yano, H. Okabe, K. Ueno, 2012, Journal of pharmacological sciences.

Synthetic Studies on Naturally Occurring Coumarins. II. Synthesis of 6, 7-Dimethoxy- and 7, 8-Dimethoxy-5-[(E)-3-oxo-1-butenyl]coumarins

T. Ishikawa, H. Miyazaki, T. Harayama, 1992 .

Studies on the Chemical Constituents of Rutaceous Plants. XLVIII. The Chemical Constituents of Xanthoxylum ailanthoides SIEB. et ZUCC. [Fagara ailanthoides (SIEB. et ZUCC.) ENGL.]. (3) Isolation of the Chemical Constituents of the Bark

T. Ishikawa, H. Ishii, M. Mihara, 1983 .

Biologically active constituents of Aglaia erythrosperma

Takuya Kumamoto, T. Ishikawa, R. Suttisri, 2011, Natural product research.