Y. Okamoto

发表

Dinorcassane Diterpenoid from Boesenbergia rotunda Rhizomes Collected in Lower Myanmar

Prema, I. Abe, Y. Asakawa, 2019, Chemistry & biodiversity.

Picrajavanicins H–M, new quassinoids from Picrasma javanica collected in Myanmar and their antiproliferative activities

I. Abe, Y. Asakawa, H. Morita, 2016 .

In vitro antitrypanosomal activity of the cyclodepsipeptides, cardinalisamides A–C, from the insect pathogenic fungus Cordyceps cardinalis NBRC 103832

S. Ōmura, K. Otoguro, Midori Suenaga, 2013, The Journal of Antibiotics.

In Vitro Antitrypanosomal Activity of the Secondary Metabolites from the Mutant Strain IU-3 of the Insect Pathogenic Fungus Ophiocordyceps coccidiicola NBRC 100683.

S. Ōmura, M. Noji, K. Otoguro, 2016, Chemical & pharmaceutical bulletin.

Age-specific distribution of estimated glomerular filtration rate using Japanese health checkup data

K. Yanai, Toshimasa Takahashi, Y. Okamoto, 2016 .

Diversity of Ligularia kanaitzensis in sesquiterpenoid composition and neutral DNA

X. Gong, Kanako Tachikawa, C. Kuroda, 2008 .

Convergent synthesis of 4,6-unsubstituted 5-acyl-2-aminodihydropyrimidines using Weinreb amide

Hidetsura Cho, T. Kubo, Y. Okamoto, 2017 .

Convergent synthesis of 4,6-unsubstituted 5-acyl-2-phenyldihydropyrimidines by substitution reactions of Weinreb amide group of tetrahydropyrimidines

Hidetsura Cho, T. Kubo, Y. Okamoto, 2016 .

Synthetic studies on novel 1,4-dihydro-2-methylthio-4,4,6-trisubstituted pyrimidine-5-carboxylic acid esters and their tautomers.

Y. Okamoto, M. Ikunaka, Y. Ohyama, 2011, Chemical & pharmaceutical bulletin.

Analogue experiments of collapse calderas above vertically elongated magma chambers

H. Komuro, Y. Okamoto, 2009 .

P-59 CHEMICAL CONSTITUENTS OF LIGULARIA VIRGAUREA AND ITS DIVERSITY IN SOUTHWESTERN SICHUAN OF CHINA

Yuemao Shen, X. Gong, C. Kuroda, 2006 .

Sulfated vizantin causes detachment of biofilms composed mainly of the genus Streptococcus without affecting bacterial growth and viability

M. Oda, S. Takenaka, H. Ohshima, 2020, BMC microbiology.

Mutations affecting gonadal development in Medaka, Oryzias latipes

T. Henrich, T. Tomonaga, N. Iwanami, 2004, Mechanisms of Development.

Mutations affecting early distribution of primordial germ cells in Medaka (Oryzias latipes) embryo

T. Henrich, N. Iwanami, A. Yasuoka, 2004, Mechanisms of Development.

Structure and cytotoxic evaluation of five 12-oxygenated eremophilanes from Ligularia lingiana

X. Gong, C. Kuroda, Yoshinori Saito, 2014 .

Four new compounds from Ligularia virgaurea: isolation of eremophilane and noreremophilane sesquiterpenoids and the absolute configuration of 2α-hydroxyeremophil-11-en-9-one by CD spectrum and DFT calculation

X. Gong, C. Kuroda, Yoshinori Saito, 2013 .

Synthesis of nucleoside units possessing photoreactive diazirine groups on the major and minor groove faces

N. Minakawa, Tomoya Wada, Noriko Saito-Tarashima, 2019, Tetrahedron Letters.

Effects of Alcoholic Solvents on Antiradical Abilities of Protocatechuic Acid and Its Alkyl Esters

J. Kawabata, Y. Okamoto, S. Saito, 2004, Bioscience, biotechnology, and biochemistry.

Studies on the Alkaloids of Menispermaceous Plants. CCLIX. Alkaloids of Menispermum dauricum DC. (Suppl. 7). Structures of Acutumine and Acutumidine, Chlorine-Containing Alkaloids with a Novel Skeleton

K. Kamiya, K. Osaki, T. Kikuchi, 1971 .

TX-2152: a conformationally rigid and electron-rich diyne analogue of FTY720 with in vivo antiangiogenic activity.

H. Nagasawa, Y. Asakawa, Y. Uto, 2008, Bioorganic & medicinal chemistry.

Acutumine and acutumidine, chlorine containing alkaloids with a novel skeleton (2): Chemical proof

K. Kamiya, K. Osaki, T. Kikuchi, 1967 .

New cytotoxic phloroglucinols, baeckenones D-F, from the leaves of Indonesian Baeckea frutescens.

Y. Asakawa, H. Morita, H. Imagawa, 2016, Fitoterapia.

The X-ray analyses of acutumine and its acetate; a trial of a short cut in the structure elucidation

K. Kamiya, K. Osaki, I. Nitta, 1968 .

N′1,N′4-bis(2-(7,8-dimethyl-2,4-dioxo-3,4-dihydrobenzo[g]pteridin-10(2H)-yl)ethylidene)succinohydrazide

K. Kino, Takanobu Kobayashi, Masayuki Morikawa, 2022, Molbank.

Oxidative dimers produced from protocatechuic and gallic esters in the DPPH radical scavenging reaction.

J. Kawabata, Y. Okamoto, T. Kasai, 2002, Journal of agricultural and food chemistry.

Labdane diterpenoids from Curcuma amada rhizomes collected in Myanmar and their antiproliferative activities.

Prema, I. Abe, Y. Asakawa, 2017, Fitoterapia.

Radical scavenging mechanism of phenol carboxylic acids: Reaction of protocatechuic esters

J. Kawabata, Y. Okamoto, S. Saito, 2004, BioFactors.

Quinone Hemiacetal Formation from Protocatechuic Acid during the DPPH Radical Scavenging Reaction

J. Kawabata, Y. Okamoto, T. Kasai, 2003, Bioscience, biotechnology, and biochemistry.

Tetrahydrofuran lignans: Melanogenesis inhibitors from Premna integrifolia wood collected in Myanmar.

Prema, I. Abe, Y. Asakawa, 2018, Fitoterapia.

Isopimarane diterpenoids from Kaempferia pulchra rhizomes collected in Myanmar and their Vpr inhibitory activity.

I. Abe, T. Matsui, Y. Asakawa, 2016, Bioorganic & medicinal chemistry letters.

Two New Norursane-type Triterpenoids from Dipsacus chinensis Collected in China

X. Gong, Yoshinori Saito, M. Tori, 2012 .

Two New Diterpenoids from Salvia Przewarskii

H. Hirota, H. Kagechika, H. Kawabe, 2016, Natural product communications.

Eight New Alkyne and Alkene Derivatives from Four Saussurea Species Collected in China

X. Gong, T. Kawahara, C. Kuroda, 2013 .

Four New Guaianolides and Acetylenic Alcohol from Saussurea Katochaete Collected in China

X. Gong, C. Kuroda, Yoshinori Saito, 2012, Natural product communications.

Two new cyclopentenones and a new furanone from Baeckea frutescens and their cytotoxicities.

H. Morita, Masami Tanaka, Takuya Ito, 2016, Fitoterapia.

Four New Eremophilane-Type Alcohols from Cremanthodium Helianthus Collected in China

X. Gong, C. Kuroda, Yoshinori Saito, 2012, Natural product communications.

Isolation and Structure of Three Bislactones, Eremopetasitenin B4 and Eremofarfugins F and G, from Ligularia przewalskii and Revision of the Structure of an Epoxy-lactone Isolated from Ligularia intermedia

X. Gong, C. Kuroda, Yoshinori Saito, 2014 .

Chemical and Genetic Studies on Hybrid of Ligularia subspicata and Ligularia cyathiceps Collected in Yunnan Province of China

X. Gong, C. Kuroda, M. Tori, 2014, Chemistry & biodiversity.

Chemical and genetic similarity and diversity of Ligularia anoleuca and L. fischeri collected in the Hengduan Mountains of China.

X. Gong, C. Kuroda, M. Tori, 2014, Phytochemistry.

New Oplopane-type Sesquiterpenoids from Ligularia duciformis

Yuemao Shen, X. Gong, Masami Tanaka, 2007 .

Synthesis and biological activity of 1-methyl-tryptophan-tirapazamine hybrids as hypoxia-targeting indoleamine 2,3-dioxygenase inhibitors.

H. Sugimoto, H. Nagasawa, Y. Asakawa, 2008, Bioorganic & medicinal chemistry.

Diversity in the Flavonoid Composition of Stellera chamaejasme in the Hengduan Mountains

K. Shirai, X. Gong, T. Kawahara, 2015, Natural product communications.

Chemical and genetic diversity of Ligularia virgaurea collected in northern Sichuan and adjacent areas of China. Isolation of 13 new compounds

X. Gong, Midori Suenaga, Y. Matsunaga, 2012 .

Chemical and genetic study of Ligularia cyathiceps in Yunnan Province of China.

X. Gong, C. Kuroda, Yoshinori Saito, 2009 .

Isolation of new eremophilane-type sesquiterpenoids, subspicatins A–D and subspicatolide from Ligularia subspicata, and chemical and genetic diversity of the species

X. Gong, Kanako Tachikawa, Masami Tanaka, 2008 .

Chemical and genetic diversity of Ligularia vellerea in Yunnan, China.

Yuemao Shen, X. Gong, Masami Tanaka, 2008, Phytochemistry.

Bisabolane, Oplopane, and Lignan Constituents of Cremanthodium campanulatum Collected in China

X. Gong, C. Kuroda, Yoshinori Saito, 2019, Natural Product Communications.

Synthesis and evaluation of c-di-4'-thioAMP as an artificial ligand for c-di-AMP riboswitch.

N. Minakawa, K. Furukawa, Keiji Murakami, 2017, Bioorganic & medicinal chemistry.

Design of a bioreductively-activated fluorescent pH probe for tumor hypoxia imaging.

Y. Uto, H. Hori, Eiji Nakata, 2009, Bioorganic & medicinal chemistry.

Practical synthesis of 4′-selenopurine nucleosides by combining chlorinated purines and ‘armed’ 4-selenosugar

N. Minakawa, Yoshiyuki Tanaka, Seigi Yamamoto, 2016 .

A new cerebroside from the entomopathogenic fungus Ophiocordyceps longiissima: Structural-electronic and antioxidant relations. Experimental and DFT calculated studies

M. Noji, N. V. Trang, A. Elshamy, 2020 .

Chemical and Genetic Diversity of Ligularia hodgsonii in China

X. Gong, C. Kuroda, M. Tori, 2015, Natural product communications.

A systematic genome-wide screen for mutations affecting organogenesis in Medaka, Oryzias latipes

Thorsten Henrich, Mirana Ramialison, Rebecca Quiring, 2004, Mechanisms of Development.

Mutations affecting retinotectal axonal pathfinding in Medaka, Oryzias latipes

T. Henrich, J. Wittbrodt, N. Iwanami, 2004, Mechanisms of Development.

A novel strategy to design latent ratiometric fluorescent pH probes based on self-assembled SNARF derivatives

Y. Uto, H. Hori, T. Morii, 2014 .

Chemical and Genetic Diversity of Ligularia kanaitzensis in the Hengduan Mountains Area. Chemical Relationship with L. subspicata

X. Gong, C. Kuroda, Yoshinori Saito, 2021, Chemistry & biodiversity.

Chemical and Genetic Identity of Ligularia tsangchanensis and L. muliensis. Isolation of a Cacalol Precursor from a Hybrid of L. tsangchanensis and L. vellerea

X. Gong, C. Kuroda, M. Tori, 2018 .

Chemical constituents of hybrids of Ligularia cyathiceps and L. lamarum/L. subspicata collected in China: Structures of subspicatins M, N, O1, and O2, and related compounds.

X. Gong, C. Kuroda, Yoshinori Saito, 2017, Phytochemistry.

Terpenoids and Phenylpropanoids in Ligularia duciformis ,

X. Gong, C. Kuroda, M. Tori, 2017 .

Chemical and Genetic Study of two Ligularia Hybrids in Shangrila County, Yunnan Province, China

X. Gong, C. Kuroda, M. Tori, 2016, Natural Product Communications.

Chemical Lineages of Ligularia Fischeri

X. Gong, C. Kuroda, Yoshinori Saito, 2016, Natural product communications.

Chemotypes of Ligularia vellerea, its Hybrids, and L. melanothyrsa

X. Gong, C. Kuroda, Yoshinori Saito, 2015, Natural product communications.

Chemical Composition of Intergeneric Hybrids Between Ligularia and Cremanthodium Collected in Sichuan Province of China

X. Gong, C. Kuroda, M. Tori, 2019, Natural Product Communications.

Diversity of Furanoeremophilane Composition in Ligularia tongolensis

X. Gong, Takashi Tanaka, C. Kuroda, 2019, Natural Product Communications.

Three New Eremophilanes from a Ligularia Hybrid Collected in China.

X. Gong, C. Kuroda, Yoshinori Saito, 2016, Natural product communications.

Chemical Constituents in Hybrids of Ligularia tongolensis and L. cymbulifera: Chemical Introgression in L. tongolensis

X. Gong, C. Kuroda, M. Tori, 2016, Chemistry & biodiversity.

Structures of Six New Compounds from Ligularia brassicoides.

X. Gong, C. Kuroda, Yoshinori Saito, 2014 .

Diversity in Furanoeremophilane Composition Produced by Ligularia Species (Asteraceae) in the Hengduan Mountains Area of China

H. Hirota, X. Gong, T. Kawahara, 2014 .

Five new subspicatins and noreremophilane from Parasenecio petasitoides collected in China

X. Gong, C. Kuroda, Yoshinori Saito, 2011 .

Chemical and genetic diversity of Cremanthodium lineare.

X. Gong, T. Kawahara, C. Kuroda, 2013, Phytochemistry.

Eremophilane Sesquiterpenoids and Nor- and Dinorsesquiterpenoids from Ligularia virgaurea Collected in China

X. Gong, C. Kuroda, M. Tori, 2018, Natural Product Communications.

Terpenoids and Phenylpropanoids in Ligularia duciformis, L. kongkalingensis, L. nelumbifolia, and L. limprichtii

X. Gong, C. Kuroda, M. Tori, 2017, Molecules.

Chemical Diversity in Ligularia oligonema

X. Gong, C. Kuroda, M. Tori, 2017 .

Intra-specific diversity of the chemical composition of Ligularia lamarum in the Hengduan Mountains, China: The structures of four new eremophilanes and a new seco-eremophilane

X. Gong, C. Kuroda, Yoshinori Saito, 2017 .

Diversity in Chemical Constituents of Ligularia Longihastata Collected in China

X. Gong, C. Kuroda, M. Tori, 2016, Natural product communications.

Chemical Constituents of Ligularia Wilsoniana Collected in Chongqing, China

X. Gong, C. Kuroda, M. Tori, 2016, Natural product communications.

Terpenoids from Ligularia virgaurea collected in China: the first example of two bakkane derivatives with an anhydride-type ring C and nineteen new chemical constituents

X. Gong, C. Kuroda, Yoshinori Saito, 2015 .

Constituents of Ligularia brassicoides Collected in China: A New Diels-Alder Adduct of Eremophilan-10βol and Methacrylic Acid

X. Gong, C. Kuroda, M. Tori, 2015, Natural product communications.

Four New Sesquiterpenoids from Ligularia subspicata Collected in China; Isolation of a Bakkane-type Lactone, an Eremophilane-type Lactone, and Two Ortho Esters

X. Gong, C. Kuroda, Yoshinori Saito, 2015, Natural product communications.

Twelve new compounds from Ligularia melanothyrsa ; isolation of melanothyrsins A–E, normelanothyrsin A, and other eremophilane sesquiterpenoids

X. Gong, C. Kuroda, Yoshinori Saito, 2014 .

Chemical constituents of Ligularia franchetiana collected in Yunnan province of China

X. Gong, C. Kuroda, Yoshinori Saito, 2008 .

Eremophilanes from Ligularia hookeri Collected in China and Structural Revision of 3β-Acyloxyfuranoeremophilan-15,6-olide.

X. Gong, Takashi Tanaka, C. Kuroda, 2018, Chemical & pharmaceutical bulletin.

Chemical and Genetic Studies on Hybrid of Ligularia subspicata and Ligularia cyathiceps Collected in Yunnan Province of China.

X. Gong, C. Kuroda, M. Tori, 2015 .

Design of a SNARF-based Ratiometric Fluorescent Probe for Esterase

Y. Uto, H. Hori, Eiji Nakata, 2010 .

Chemical Constituents of the Aerial Parts of Daucus carota subsp. hispidus Growing in Tunisia

M. Noji, Y. Asakawa, A. Elshamy, 2019, Natural Product Communications.

A New Diphenyl Ether Glycoside from Xylosma longifolium Collected from North-East India

M. Noji, Y. Asakawa, H. Imagawa, 2017 .

Direct MS measurement of the extract of Ligularia virgaurea collected in Yunnan and Sichuan provinces of China.

X. Gong, C. Kuroda, Yoshinori Saito, 2010, Phytochemical analysis : PCA.

Anchietins A-E: 30-norfriedelane-type triterpenes from Anchietea pyrifolia.

Y. Fukuyama, A. Ohsaki, M. Kubo, 2022, Phytochemistry.

Eremophilane, bakkane, secoeremophilane, and secobakkane sesquiterpenoids from Ligularia virgaurea collected in China

X. Gong, C. Kuroda, Yoshinori Saito, 2019, Tetrahedron.

Safety Assessment of Bangle (Zingiber purpureum Rosc.) Rhizome Extract: Acute and Chronic Studies in Rats and Clinical Studies in Human

Y. Fukuyama, N. Suzuki, Y. Matsunaga, 2018, ACS omega.

A newly designed cell-permeable SNARF derivative as an effective intracellular pH indicator.

Y. Uto, H. Hori, Eiji Nakata, 2010, Chemical communications.

Arsenite suppresses the transcriptional activity of EVI1 through the binding to CCHC-type Zn finger domain.

K. Suzukawa, D. Sumi, S. Himeno, 2020, Biochemical and biophysical research communications.

Four Eremophil-9-en-8-one Derivatives from Cremanthodium stenactinium Samples Collected in China

X. Gong, C. Kuroda, Yoshinori Saito, 2011, Molecules.

Chemical and genetic study of Ligularia tongolensis, Ligularia cymbulifera, and Ligularia atroviolacea in the Hengduan Mountains of China

Yuemao Shen, X. Gong, C. Kuroda, 2005 .

Diversity of Secondary Metabolites in the Liverwort Syzygiella rubricaulis (Nees) Stephani (Jamesoniellaceae, Marchantiophyta) from Neotropical High Mountains

R. Pereira, Y. Asakawa, D. P. Costa, 2018, Chemistry & biodiversity.

[Studies on the alkaloids of Nelumbo nucifera Gaertn. XIV. On the tertiary base].

J. Kunitomo, H. Furukawa, Y. Okamoto, 1970, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

Studies on the Alkaloids of Menispermaceous Plants. CCXLIII. Syntheses of Dauricine Type Bases. (3). Synthesis of dl-Cuspidaline and dl-4'-O-Methylberbamunine

Y. Okamoto, M. Tomita, K. Fujitani, 1968 .

Studies on the alkaloids of menispermaceous plants. CCXIX. Dauricine from Menispermum canadense L.

R. Manske, Y. Okamoto, M. Tomita, 1965, Chemical and pharmaceutical bulletin.

Studies on the Alkaloids of Menispermaceous Plants. CCIX: Alkaloids of Menispermum dauricum DC. (Suppl. 4). The Structure of a New Tertiary Phenolic Biscoclaurine Type Alkaloid “Daurinoline.”@@@コウモリカヅラ Menispermum dauricum DC.のアルカロイド (補遺その4) 第3級フェノール性Biscoclaurine型新塩基Daurinolineの構造

Y. Okamoto, M. Tomita, 1965 .

[STUDIES ON THE ALKALOIDS OF MENISPERMACEOUS PLANTS. 208. ALKALOIDS OF MENISPERMUM DAURICUM DC. (SUPPL. 3). DAURICINE].

Y. Okamoto, M. Tomita, 1964, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

[Studies on the alkaloids of menispermaceous plants. CCLVII. Alkaloids of Menispermum daurium DC. (suppl. 52). The structure of a new tertiary phenolic biscoclaurine type alkaloid "dauricoline"].

H. Yanagawa, Y. Okamoto, Y. Nagai, 1970, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

Degradation of malathion, in aqueous extracts of asparagus (Asparagus officinalis).

T. Shibamoto, Y. Okamoto, 2004, Journal of Agricultural and Food Chemistry.

TX-2152: a conformationally rigid and electron-rich diyne analogue of FTY720 with in vivo antiangiogenic activity.

H. Nagasawa, Y. Asakawa, Y. Uto, 2008, Bioorganic & medicinal chemistry.

Synthesis and photophysical properties of new SNARF derivatives as dual emission pH sensors.

Y. Uto, H. Hori, Eiji Nakata, 2011, Bioorganic & medicinal chemistry letters.

Chemical and Genetic Study of Ligularia tongolensis, Ligularia cymbulifera, and Ligularia atroviolacea in the Hengduan Mountains of China

C. Kuroda, M. Tori, R. Hanai, 2005 .

Confocal fluorescence microscopy for studying thapsigargin-induced bivalent-cation entry into B cells.

T. Furuno, M. Nakanishi, Y. Okamoto, 1995, The Biochemical journal.