I. Okamoto

发表

Synthesis and conformational analysis of N-aryl-N-(6-azulenyl)acetamides

Ai Ito, Ayako Ishii, Takamasa Amaki, 2018, Tetrahedron Letters.

Synthesis and conformational analysis of N-aryl-N-(3-thienyl)acetamides

Ai Ito, Kazuo Fukuda, R. Yamasaki, 2018, Tetrahedron Letters.

Orbital Unsymmetrization of Olefins Arising from Non-equivalent Orbital Interactions. σ-π Coupling in Bicyclo[2.2.2]octenes

K. Shudo, T. Ohwada, M. Uchiyama, 1996 .

Redox-responsive conformational alteration of aromatic amides bearing N-quinonyl system

H. Kagechika, I. Azumaya, H. Masu, 2012 .

Spontaneous resolution of aromatic sulfonamides: effective screening method and discrimination of absolute structure.

H. Kagechika, I. Azumaya, M. Uchiyama, 2006, Organic letters.

Selective allylic hydroxylation of octahydronaphthalene derivatives with a bridgehead double bond using electrochemical method with iron picolinate complexes.

I. Okamoto, M. Sawamura, W. Funaki, 2005, Chemical & pharmaceutical bulletin.

Polymorphism and Pseudopolymorphism of an Aromatic Amide : Spontaneous Resolution and Crystal-to-Crystal phase Transition

H. Kagechika, I. Azumaya, H. Masu, 2008 .

Absolute helical arrangement of sulfonamide in the crystal.

H. Kagechika, I. Azumaya, K. Yamaguchi, 2003, Organic letters.

Acid-induced molecular-structural transformation of N-methyl aromatic oligoamides bearing pyridine-2-carboxamide

Ai Ito, R. Yamasaki, I. Okamoto, 2016 .

Synthesis and biological evaluation of tubulysin D analogs related to stereoisomers of tubuvaline.

H. Morita, I. Okamoto, N. Morita, 2011, Bioorganic & medicinal chemistry letters.

A new electrochemical system for stereoselective allylic hydroxylation of cholesteryl acetate with dioxygen induced by iron picolinate complexes.

I. Okamoto, W. Funaki, E. Kotani, 2004, Chemical & pharmaceutical bulletin.

Reactions of 1-naphthols with pi-acceptor p-benzoquinones: oxidative aryl coupling vs. non-oxidative electrophilic arylation.

I. Okamoto, H. Kondo, Hirohisa Doi, 2005, Chemical & pharmaceutical bulletin.

BF3-Mediated cis-Selective Cycloaddition of O-Silyloxime with Alkenes.

I. Azumaya, H. Masu, I. Okamoto, 2015, The Journal of organic chemistry.

Intrinsic pyramidal nitrogen of N-sulfonylamides

K. Shudo, T. Ohwada, K. Yamaguchi, 1998 .

Semiconductor-mediated oxidative dimerization of 1-naphthols with dioxygen and O-demethylation of the enol-ethers by SnO2 without dioxygen

I. Okamoto, E. Kotani, T. Takeya, 2004 .

Gold(I)/(III)-Catalyzed Synthesis of Cyclic Ethers; Valency-Controlled Cyclization Modes.

I. Okamoto, Yoshimitsu Hashimoto, N. Morita, 2015, Organic letters.

Total syntheses of tubulysins.

T. Hirai, I. Azumaya, H. Masu, 2010, Chemistry.

Aerobic oxidative dimerization of 1-naphthols to 2,2′-binaphthoquinones mediated by SnCl4 and its application to natural product synthesis

T. Ogata, I. Okamoto, Hirohisa Doi, 2004 .

SnCl4-mediated oxidative reaction for formation of binaphthoquinone and dinaphthofuran frameworks and its application to natural product synthesis

T. Ogata, I. Okamoto, Hirohisa Doi, 2003 .

Orbital Unsymmetrization Affects Facial Selectivities of Diels-Alder Dienophiles.

K. Shudo, T. Ohwada, I. Okamoto, 1996, The Journal of organic chemistry.

Gold-Catalyzed Synthesis of 2-Substituted Azepanes: Strategic Use of Soft Gold(I) and Hard Gold(III) Catalysts

I. Okamoto, Yoshimitsu Hashimoto, N. Morita, 2016 .

A flexible approach to grandisine alkaloids: total synthesis of grandisines B, D, and F.

I. Okamoto, N. Morita, O. Tamura, 2009, Chemistry.

Synthesis of the proposed structure of phaeosphaeride A.

I. Okamoto, N. Morita, O. Tamura, 2011, Organic & biomolecular chemistry.

Synthesis and crystal structures of N,N-diarylacetamides bearing two azulene rings

Ai Ito, Ayako Ishii, R. Yamasaki, 2021, Tetrahedron Letters.

Conformational analysis of N-aryl-N-(2-azulenyl)acetamides

Ai Ito, Ayako Ishii, Takamasa Amaki, 2018, Tetrahedron Letters.

Acid-controlled switching of conformational preference of N,N-diarylamides bearing pyridine

Ai Ito, R. Yamasaki, I. Okamoto, 2016 .

Acid- and base-induced conformational alterations of N-aryl-N-troponyl amides

Ai Ito, R. Yamasaki, I. Okamoto, 2016 .

Solvent-dependent conformational and fluorescence change of an N-phenylbenzohydroxamic acid derivative bearing two pyrene moieties

H. Kagechika, T. Hirano, I. Azumaya, 2012 .

Acid-induced conformational alteration of cis-preferential aromatic amides bearing N-methyl-N-(2-pyridyl) moiety

I. Azumaya, H. Masu, I. Okamoto, 2011 .

External Stimulus-Responsive Control of Aromatic Amide Conformations

H. Kagechika, I. Okamoto, A. Tanatani, 2010 .

[External stimulus-responsive conformational alterations of aromatic amides].

I. Okamoto, 2009, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

Generation and [2 + 2] Cycloadditions of Thio‐Substituted Ketenes: trans‐1‐(4‐Methoxyphenyl)‐4‐Phenyl‐3‐(Phenylthio)Azetidin‐2‐One

M. Lawlor, I. Okamoto, R. Danheiser, 2003 .

Generation and [2+2] cycloadditions of thio-substituted ketenes: trans-1-(4-methoxyphenyl)-4-phenyl-3-(phenylthio)azetidin-2-one [(2-azetidinone, 1-(4-methoxyphenyl)-4-phenyl-3-(phenylthio)-, trans-)]

S. Denmark, M. Lawlor, I. Okamoto, 2003 .

Intermolecular cycloaddition of N-boranonitrone with alkenes.

Hiroshi Sato, I. Okamoto, N. Morita, 2008, The Journal of organic chemistry.

Total synthesis of grandisine D.

I. Okamoto, N. Morita, O. Tamura, 2009, Organic letters.

Stereoselective vinylogous Mannich reaction of 2-trimethylsilyloxyfuran with N-gulosyl nitrones.

M. Sakamoto, I. Okamoto, N. Morita, 2011, Organic & biomolecular chemistry.

Hetero [4 + 2] cycloadditions of (trialkylsilyl)vinylketenes. Synthesis of alpha,beta-unsaturated delta-valerolactones and -lactams.

I. Okamoto, R. Danheiser, D. M. Bennett, 1999, Organic letters.

Synthesis of maremycins A and D1 via cycloaddition of a nitrone with (E)-3-ethylidene-1-methylindolin-2-one.

I. Okamoto, N. Morita, O. Tamura, 2008, Organic letters.

SnCl4-mediated oxidative biaryl coupling reaction of 1-naphthol and subsequent ring closure of 2,2′-binaphthol to the dinaphthofuran framework

T. Ogata, I. Okamoto, Hirohisa Doi, 2004 .

Synthesis and evaluation of opioid receptor-binding affinity of elaeocarpenine and its analogs.

I. Okamoto, N. Morita, O. Tamura, 2010, Bioorganic & medicinal chemistry letters.

On the planarity of amide nitrogen. Intrinsic pyramidal nitrogen of N-acyl-7-azabicyclo[2.2.1]heptanes

K. Shudo, T. Ohwada, K. Yamaguchi, 1998 .

Gold(I)/(III)-catalyzed synthesis of 2-substituted piperidines; valency-controlled cyclization modes

I. Okamoto, Yoshimitsu Hashimoto, N. Morita, 2015 .

Biomimetic synthesis of the dinaphthofuranquinone violet-quinone, utilizing oxidative dimerization with the ZrO2/O2 system

T. Ogata, I. Okamoto, E. Kotani, 2004 .

Efficient oxidative dimerization of 1-naphthols to 2,2′-binaphthyls with dioxygen mediated by semiconductors

I. Okamoto, E. Kotani, T. Takeya, 2004 .

The aryl–aryl coupling reaction of 1-naphthol with SnCl 4 for 2,2′-binaphthol synthesis and its application to the biomimetic synthesis of binaphthoquinone isolated from Plumbago zeylanica

I. Okamoto, Hirohisa Doi, E. Kotani, 2001 .

Stereoselective synthesis of tubuvaline methyl ester and tubuphenylalanine, components of tubulysins, tubulin polymerization inhibitors

T. Hirai, I. Azumaya, H. Masu, 2009 .

Solvent-dependent conformational switching of the aromatic N-methyl amides depending upon the acceptor properties of solvents

I. Okamoto, O. Tamura, Misaki Yamamoto, 2006 .

Acid-induced molecular folding and unfolding of N-methyl aromatic amide bearing 2,6-disubstituted pyridines.

I. Azumaya, H. Masu, I. Okamoto, 2007, Journal of the American Chemical Society.

Crystal Engineering of N,N′-Diphenylurea Compounds Featuring Phenyl–Perfluorophenyl Interaction

H. Kagechika, H. Masu, Ai Ito, 2017 .

Total asymmetric transformation of an N-methylbenzamide.

H. Kagechika, K. Shudo, I. Azumaya, 1995 .

Acid-induced conformational switching of aromatic N-methyl-N-(2-pyridyl)amides

I. Azumaya, H. Masu, I. Okamoto, 2007 .

A CHIRAL N-METHYLBENZAMIDE : SPONTANEOUS GENERATION OF OPTICAL ACTIVITY

Shingo Nakayama, Kentaro Yamaguchi, Koichi Shudo, 1999 .

Conformational Switch of Benzanilide Derivative Induced by Acid; Effect of Pentafluorobenzoyl Group.

Ai Ito, Kazuo Fukuda, R. Yamasaki, 2022, The Journal of organic chemistry.

N-Ethynylation of Anilides Decreases the Double-Bond Character of Amide Bond while Retaining trans-Conformation and Planarity.

Ai Ito, Kazuo Fukuda, R. Yamasaki, 2019, Chemistry.

Redox-induced conformational alteration of n,n-diarylamides.

H. Kagechika, I. Azumaya, H. Masu, 2007, Organic letters.

The Aryl—Aryl Coupling Reaction of 1-Naphthol with SnCl4 for 2,2′-Binaphthol Synthesis and Its Application to the Biomimetic Synthesis of Binaphthoquinone Isolated from Plumbago zeylanica.

I. Okamoto, Hirohisa Doi, E. Kotani, 2001 .

Characterization of push-pull-type benzo[X]quinoline derivatives (X = g or f): environmentally responsive fluorescent dyes with multiple functions.

Tomohiro Umeno, Yui Abe, R. Yamasaki, 2020, The Journal of organic chemistry.

Purification, identification, characterization, and cDNA cloning of a high molecular weight extracellular superoxide dismutase of hamster that transiently increases in plasma during arousal from hibernation.

K. Akita, S. Arai, T. Ohta, 2007, Comparative biochemistry and physiology. Part A, Molecular & integrative physiology.

Enhanced antioxidant defense due to extracellular catalase activity in Syrian hamster during arousal from hibernation.

Toshiharu Hanaya, Shigeyuki Arai, S. Arai, 2006, Comparative biochemistry and physiology. Toxicology & pharmacology : CBP.

A novel construction of dibenzofuran-1,4-diones by oxidative cyclization of quinone-arenols.

I. Okamoto, O. Tamura, H. Kondo, 2007, Organic letters.

Non-steric facial selectivity in nucleophilic 1,4-conjugate additions

K. Shudo, T. Ohwada, I. Okamoto, 1997 .

Gold-Catalyzed Dimeric Cyclization of Isoeugenol and Related 1-Phenylpropenes in Ionic Liquid: Environmentally Friendly and Stereoselective Synthesis of 1,2,3-Trisubstituted 2,3-Dihydro-1H-indenes

I. Okamoto, N. Morita, O. Tamura, 2016, Synthesis.

Distortion of Olefin and Carbonyl .pi.-Orbitals in Dibenzobicyclo[2.2.2]octatrienes and Dibenzobicyclo[2.2.2]octadienones. Unsymmetrization of .pi. Lobes Arising from .pi.-.pi. Orbital Interactions

K. Shudo, T. Ohwada, I. Okamoto, 1994 .

Improved yields of cyclic nigerosylnigerose from starch by pretreatment with a thermostable branching enzyme.

H. Abe, A. Kawashima, I. Okamoto, 2010, Journal of bioscience and bioengineering.

Synthesis and Conformational Analysis of N-Aromatic Acetamides Bearing Thiophene: Effect of Intramolecular Chalcogen-Chalcogen Interaction on Amide Conformational Stability.

Ai Ito, Kazuo Fukuda, R. Yamasaki, 2023, The Journal of organic chemistry.

Structure and Additive-free Transamidation of Planar N-Cyano Amides.

Ai Ito, Kazuo Fukuda, R. Yamasaki, 2023, The Journal of organic chemistry.