K. Koga

发表

Enantioselective reaction of an imine with methyllithium catalyzed by a chiral ligand

K. Tomioka, I. Inoue, M. Shindo, 1995 .

Flexible n-type thermoelectric materials by organic intercalation of layered transition metal dichalcogenide TiS2.

Kenji Koga, Kunihito Koumoto, Ronggui Yang, 2015, Nature materials.

Fabrication of size-controlled 10-nm scale Si pillars using metal clusters as formation nuclei

K. Koga, T. Tada, T. Kanayama, 1998 .

Formation of a Calcium Phosphate Layer with Immobilized Cobalt Chromite Nanoparticles on Cobalt−Chromium Alloy by a Laser-Assisted Biomimetic Process

K. Koga, A. Oyane, Ikuko Sakamaki, 2020, Applied Sciences.

Antibacterial tooth surface created by laser-assisted pseudo-biomineralization in a supersaturated solution.

K. Koga, H. Miyaji, A. Oyane, 2020, Materials science & engineering. C, Materials for biological applications.

Calcium phosphate coating on dental composite resins by a laser-assisted biomimetic process

K. Koga, H. Miyaji, E. Nishida, 2018, Heliyon.

Alteration of thermal stability of glucose oxidase associated with the redox states.

K. Koga, S. Nakamura, 1977, Biochemical and biophysical research communications.

Synthesis of magnetic CoPt/SiO2 core-shell nanoparticles

H. Akinaga, T. Seto, K. Koga, 2007 .

Synthesis of magnetic CoPt/SiO2 nano-composite by pulsed laser ablation

H. Akinaga, T. Seto, K. Koga, 2006 .

Crown Ethers · Cryptands

K. Koga, S. Sasaki, 1989 .

Enantioselective deprotonation by chiral lithium amide bases: asymmetric synthesis of trimethylsilyl enol ethers from 4-alkylcyclohexanones.

R. Shirai, K. Koga, M. Tanaka, 1986, Journal of the American Chemical Society.

Catalytic Asymmetric Benzylation of Achiral Lithium Enolates Using a Chiral Ligand for Lithium in the Presence of an Achiral Ligand

K. Koga, H. Kawasaki, K. Manabe, 1994 .

ENANTIOSELECTIVE α-ALKYLATION OF PHENYLACETIC ACID USING A CHIRAL BIDENTATE LITHIUM AMIDE AS A CHIRAL AUXILIARY

K. Koga, J. Matsuo, 1997 .

Gold nanoparticles deposited on Amberlyst-15: Metal–acid bifunctional catalyst for cellobiose conversion to gluconic acid

K. Koga, M. Kiuchi, Hiroaki Sakurai, 2015 .

Pulsed laser irradiation of colloidal nanoparticles: a new synthesis route for the production of non-equilibrium bimetallic alloy submicrometer spheres

Kenji Kawaguchi, K. Koga, N. Koshizaki, 2013 .

Dynamics of the carbohydrate chains attached to the Fc portion of immunoglobulin G as studied by NMR spectroscopy assisted by selective 13C labeling of the glycans

M. Shindo, K. Koga, I. Shimada, 1998, Journal of biomolecular NMR.

The mechanism underlying calcium phosphate precipitation on titanium via ultraviolet, visible, and near infrared laser-assisted biomimetic process

K. Koga, A. Oyane, A. Pyatenko, 2016 .

Gas-phase fabrication of noble metal–γ-Al2O3 Janus nanoparticles and nanoworms

K. Koga, M. Hirasawa, 2016, Journal of Materials Science.

Anisotropic growth of NiO nanorods from Ni nanoparticles by rapid thermal oxidation

K. Koga, M. Hirasawa, 2013, Nanotechnology.

Stereoselective reactions. 28. Effects of the alkyl group at the amide nitrogen of chiral bidentate lithium amides on enantioselective deprotonation reaction

H. Noguchi, K. Tomioka, K. Koga, 1997 .

Host-guest complex formation between a water-soluble polyparacyclophane and a hydrophobic guest molecule

A. Itai, K. Koga, Y. Iitaka, 1980 .

Inclusion complex formation in a particular geometry by a water-soluble paracyclophane in aqueous solution — NMR Studies —

A. Itai, K. Koga, Y. Arata, 1980 .

An attempt on acceleration of peptide synthesis using the enzyme model having preorganized catalytic groups

K. Koga, S. Sasaki, Y. Takase, 1990 .

Biomimetic Studies Using Artificial Systems. VI. Design and Synthesis of Novel Cyclophanes Having Eight Carboxyl Groups on the Aromatic Rings

K. Koga, Muneharu Miyake, M. Kirisawa, 1993 .

A NOVEL WATER-SOLUBLE CYCLOPHANE AS A HOST FOR CATIONIC, ANIONIC, AND NEUTRAL AROMATIC GUESTS

K. Koga, Muneharu Miyake, M. Kirisawa, 1992 .

Electronic structure and thermoelectric properties of Skutterudites

K. Koga, K. Akai, M. Matsuura, 2001, Proceedings ICT2001. 20 International Conference on Thermoelectrics (Cat. No.01TH8589).

Various Morphologies/Phases of Gold-Based Nanocomposite Particles Produced by Pulsed Laser Irradiation in Liquid Media: Insight in Physical Processes Involved in Particles Formation

Kenji Kawaguchi, K. Koga, N. Koshizaki, 2017 .

Synthesis of the core enediyne structure of esperamicin-calichemicin class of antitumor antibiotics

K. Tomioka, K. Koga, H. Fujita, 1989 .

Dense growth of multiply-twinned star-shaped molybdenum particles by atmospheric H2/Ar microplasma jet

K. Koga, N. Koshizaki, T. Sasaki, 2009 .

Colorless alkaline solution of chloride-free gold acetate for impregnation: An innovative method for preparing highly active Au nanoparticles catalyst

K. Koga, M. Kiuchi, Hiroaki Sakurai, 2013 .

Novel Preparation Method of Colloidal Gold and Active Au/oxide Catalysts using Gold Acetate as a Cl-free Precursor

K. Koga, M. Kiuchi, Hiroaki Sakurai, 2006 .

Targeting DNA topoisomerase II with podophyllotoxin aza-analogue

K. Tomioka, K. Koga, A. Iida, 1997 .

Time-course Analysis of Pulmonary Inflammation Induced by Intratracheal Instillation of Fine Crystalline Silica Particles

K. Koga, M. Nakai, K. Uchida, 2020 .

Cyclophanes as hosts for aromatic and aliphatic guests

K. Koga, K. Odashima, 1989 .

MOLECULAR RECOGNITION AND DISCRIMINATION OF HYDROPHOBIC GUESTS IN WATER BY QUATERNARY AMMONIUM CYCLOPHANES HAVING DIARHLMETHANE UNITS

K. Koga, H. Kawakami, I. Sasaki, 1989 .

DESIGN, SYNTHESIS, AND PROPERTIES OF NOVEL WATER-SOLUBLE CYCLOPHANES HAVING NAPHTHYLPHENYLMETHANE UNITS AS HOSTS FOR ALIPHATIC AND AROMATIC GUESTS

K. Koga, H. Kawakami, O. Yoshino, 1985 .

Substrate selective inclusion by a series of water-soluble paracyclophanes — host-guest recognition of steric structure and charge —

K. Koga, T. Soga, K. Odashima, 1981 .

Electronic Structure and Thermoelectric Properties of Noble Metal Clathrates: Ba8M6Ge40(M = Cu, Ag, Au)

K. Koga, K. Akai, M. Matsuura, 2007 .

Inclusion complex formation between a novel anionic cyclophane and cationic aromatic guests in aqueous solution

K. Koga, Muneharu Miyake, M. Kirisawa, 1993 .

Strain Analysis of AuxCu1-x−Cu2O Biphase Nanoparticles with Heteroepitaxial Interface

K. Koga, D. Zubia, 2008 .

Chemistry of Sodium Borohydride and Diborane. IV. Reduction of Carboxylic Acids to Alcohols with Sodium Borohydride through Mixed Carbonic-Carboxylic Acid Anhydrides

K. Koga, S. Yamada, K. Ishizumi, 1968 .

Selective formation of Ni13O8+ and Ni16O10+ by the reactions of nickel cluster cations with oxygen

K. Koga, K. Sugawara, 2005 .

Structural properties of diamond fine particles and clusters prepared by detonation and decomposition of TNT

K. Koga, D. Saha, H. Takeo, 1998 .

Host-guest complex formation between a water-soluble polyparacyclophane and a hydrophobic guest molecule

A. Itai, K. Koga, Y. Iitaka, 1980 .

Icosahedron-fcc transition size by molecular dynamics simulation of Lennard-Jones clusters at a finite temperature.

G. Torchet, K. Koga, T. Ikeshoji, 2001, Physical review. E, Statistical, nonlinear, and soft matter physics.

Stable icosahedral nanoparticles in an as-grown Au–Fe alloy

K. Koga, D. Saha, H. Takeo, 1999 .

Stable icosahedral nanostructure in gold-copper alloy clusters

K. Koga, D. Saha, H. Takeo, 1997 .

Laser-assisted biomineralization on human dentin for tooth surface functionalization.

K. Koga, H. Miyaji, N. Yoshizawa, 2019, Materials science & engineering. C, Materials for biological applications.

Evidence for the anisotropic oxidation of gas-phase Al nanoparticles

K. Koga, M. Hirasawa, 2015, Journal of Nanoparticle Research.

First-Principles Study of Semiconducting Clathrate Ba8Al16Ge30

K. Koga, T. Uemura, H. Anno, 2009 .

Band structure and thermoelectric properties of type-III barium clathrates

K. Koga, K. Akai, M. Matsuura, 2006, 2006 25th International Conference on Thermoelectrics.

Thermoelectric properties of Sn-based clathrates

K. Koga, T. Kamei, M. Matsuura, 2005, ICT 2005. 24th International Conference on Thermoelectrics, 2005..

Stereoselective reactions. IX: Synthetic studies on optically active β-lactams. I: Chiral synthesis of carbapenam and carbapenem ring systems starting from (S)-aspartic acid

K. Koga, N. Ikota, H. Shibata, 1985 .

Chiral recognition in molecular complexing

D. Cram, K. Koga, L. R. Sousa, 1973 .

Stereochemical Studies. XI. Changes in the Stereochemical Courseof 1, 2-Asymmetric Induction in the Reduction of N-Substituted 2-Aminopropiophenone Derivatives with Sodium Borohydride

K. Koga, S. Yamada, 1972 .

Asymmetric α-alkylation of cyclohexanone by mediation of a chiral ligand and the leaving-group effect of electrophiles on enantioselectivity

K. Tomioka, M. Shindo, K. Koga, 1989 .

Asymmetric Diels–Alder reaction catalysed by chiral alkoxyaluminium dichloride

K. Koga, S. Hashimoto, N. Komeshima, 1979 .

Enantioselective 1,2-addition of grignard reagents to aldehydes using chiral diamines

K. Tomioka, K. Koga, M. Nakajima, 1993 .

Host-guest complexation. 8. Macrocyclic polyethers shaped by two rigid substituted dinaphthyl or ditetralyl units

R. Helgeson, D. Cram, K. Koga, 1978 .

Enantioselective alkylation at the α-position of cyclic ketones using a chiral lithium amide as a base in the presence of lithium bromide

K. Koga, M. Nakajima, M. Murakata, 1990 .

Design, synthesis, and structure-cytotoxity relationships of aza-steganes☆

K. Tomioka, K. Koga, H. Kawasaki, 1993 .

Design, synthesis, and antitumor activity of steganacin aza-analogues

K. Tomioka, K. Koga, H. Kawasaki, 1989 .

Enantioface differentiating Michael reaction of ethyl acetoacetate with alkylidenemalonates via chiral enamine

K. Tomioka, K. Koga, K. Yasuda, 1986 .

Host-guest complexation. 9. Macrocyclic polyethers and sulfides shaped by one rigid dinaphthyl unit and attached arms. Synthesis and survey of complexing abilities

G. Gokel, R. Helgeson, D. Cram, 1978 .

Amino acids and peptides—XIV : A simple and convenient method for preparation of α-substituted α-diazo esters

K. Koga, T. Mizoguchi, S. Yamada, 1975 .

Conjugate addition reaction of trimethylsilylacetonitrile with α,β-unsaturated carbonyl compounds. Synthetic studies toward sesbanimide

K. Tomioka, K. Koga, 1984 .

Stereoselective Reactions. 25. [1] Enantioselective Deprotonation of Prochiral 4-Substituted Cyclohe

R. Shirai, K. Koga, K. Aoki, 1997 .

Enantioselective Michael reaction of ketone lithium enolates using a chiral amine ligand

M. Shindo, K. Koga, K. Yasuda, 1996 .

Highly enantioselective aldol reaction mediated by mixed aggregates derived from a lithium ester enolate and tetradentate chiral lithium amides

K. Tomioka, K. Koga, M. Uragami, 1995 .

Enantioselective palladium catalyzed allylic alkylation with C2-symmetric chiral diamine ligands

K. Koga, M. Nakajima, H. Kubota, 1993 .

Design, synthesis, and antitumor activity-absolute configuration relationships of podophyllotoxin aza-analogues

K. Tomioka, K. Koga, Y. Kubota, 1993 .

CONSTRUCTION OF CONTIGUOUS CHIRAL TERTIARY CARBON CENTERS BY ENANTIOSELECTIVE MICHAEL REACTION OF KETONE LITHIUM ENOLATES USING A CHIRAL AMINE LIGAND

M. Shindo, K. Koga, K. Yasuda, 1997 .

Stereoselective reactions. XXIV. Chlorotrimethylsilane promoted asymmetric Michael reaction of chiral lithioenamines derived from α-alkyl β-keto esters

K. Tomioka, K. Koga, K. Ando, 1994 .

Chlorotrimethylsilane promoted asymmetric Michael reaction of chiral enamines of α-alkyl β-keto esters

K. Tomioka, K. Koga, K. Ando, 1987 .

Asymmetric Michael reaction of α-alkyl β-keto esters via chiral enamines

K. Tomioka, K. Koga, K. Ando, 1986 .

Asymmetric michael reaction via chiral α,β-unsaturated aldimines

K. Koga, S. Hashimoto, N. Komeshima, 1977 .

Solvent effect and NMR behaviour in a chiral amidophosphine mediated reaction of organocuprate with chalcone

K. Tomioka, K. Koga, M. Kanai, 1993 .

Design, Synthesis, and Application of a C2 Symmetric Chiral Ligand for Enantioselective Conjugate Addition of Organolithium to α,β-Unsaturated Aldimine

K. Tomioka, M. Shindo, K. Koga, 1998 .

Asymmetric addition of aryllithiums to naphthalene bha-esters catalyzed by a chiral ligand

M. Shindo, K. Koga, 1993 .

Novel strategy of using a C2 symmetric chiral diether in the enantioselective conjugate addition of an organolithium to an .alpha.,.beta.-unsaturated aldimine

Kenji Koga, K. Tomioka, M. Shindo, 1989 .

Host-guest complexation. 7. The binaphthyl structural unit in host compounds

G. Gokel, D. Cram, K. Koga, 1977 .

A NEW CATALYTIC SYSTEM FOR AEROBIC OXIDATIVE COUPLING OF 2-NAPHTHOL DERIVATIVES BY THE USE OF CUCL-AMINE COMPLEX : A PRACTICAL SYNTHESIS OF BINAPHTHOL DERIVATIVES

Kenji Koga, K. Koga, Masahiro Noji, 1994 .

Total synthesis of natural (+)-spatol. Confirmation of the absolute stereostructure

K. Tomioka, K. Koga, Masahide. Tanaka, 1994 .

The first total synthesis of (+)-spatol with natural configuration

K. Tomioka, K. Koga, Masahide. Tanaka, 1985 .

Highly diastereoselective tandem alkylation of acyclic α,β-unsaturated esters based on the novel use of dithioacetal unit

K. Tomioka, K. Koga, H. Kawasaki, 1985 .

Construction of chiral quaternary carbon centers by asymmetric alkylation of achiral lithium enolates mediated by chiral tetradentate ligands: Stoichiometric and catalytic approaches

K. Koga, Y. Yamashita, K. Odashima, 1999 .

Structural requirements of a chiral ligand for the catalytic asymmetric addition of thiophenol to α,β-unsaturated esters

K. Tomioka, K. Koga, M. Kanai, 1998 .

Novel use of aryloxyaluminum dichloride in the chiral diamine mediated asymmetric addition reaction of grignard reagents to benzaldehyde

K. Tomioka, K. Koga, M. Nakajima, 1987 .

Enantioselective deprotonation of the monoacetals of bicyclo[3.3.0]octan-3,7-dione. An approach to the asymmetric synthesis of chiral synthons for carbacyclins

R. Shirai, K. Koga, H. Kawasaki, 1989 .

Enantioselective synthesis of binaphthol derivatives by oxidative coupling of naphthol derivatives catalyzed by chiral diamine-copper complexes

K. Koga, S. Hashimoto, Masahiro Noji, 1999 .

Camphorqu1none and camphorquinone monoxime

K. Koga, James D White, S. Martin, 2003 .

An expeditious synthesis of dolastatin 10

K. Tomioka, K. Koga, M. Kanai, 1991 .

Enantioface differentiation in cis dihydroxylation of carbon-carbon double bonds by osmium tetroxide using a chiral diamine with D2 symmetry

K. Tomioka, K. Koga, M. Nakajima, 1987 .

Stereochemical aspects of asymmetric diels-alder reaction catalyzed by chiral alkoxyaluminum dichlorides

K. Tomioka, K. Koga, S. Hashimoto, 1987 .

7 – Noncatalytic Additions to α,β-Unsaturated Carbonyl Compounds

K. Tomioka, K. Koga, 1983 .

Regioselective enolization of optically active 3-keto steroids using chiral lithium amides

K. Koga, M. Nakajima, M. Sobukawa, 1990 .

A ONE-FLASK SYNTHESIS OF DIHYDRONAPHTHALENEMETHANOLS BY DIRECTED ADDITION OF ORGANOLITHIUM REAGENTS TO BHA NAPHTHALENECARBOXYLATES

K. Tomioka, M. Shindo, K. Koga, 1999 .

Asymmetric conjugate addition reaction by the use of (S)-γ-trityloxymethyl-γ-butyrolactam as a chiral auxiliary

K. Tomioka, K. Koga, T. Suenaga, 1986 .

Asymmetric halolactonisation reaction—4

K. Koga, S. Terashima, M. Hayashi, 1981 .

A highly efficient asymmetric synthesis of optically active α,β-epoxyaldehydes from α,β-unsaturated acids

K. Koga, S. Terashima, M. Hayashi, 1980 .

Asymmetric reduction of αβ-unsaturated ketones with lithium aluminium hydride partially decomposed by (–)-N-methylephedrine and N-ethylaniline

K. Koga, S. Terashima, N. Tanno, 1980 .

Stereoselective Reactions. III. A highly Efficient Method for the Asymmetric Synthesis of 2-Alkylcycloalkanones via Chiral Chelated Lithioenamines

K. Koga, S. Hashimoto, 1979 .

Stereoselective Reactions. I. A highly Efficient Asymmetric Synthesis of β-Substituted Aldehydes via 1, 4-Addition of Grignard Reagents to optically Active α, β-Unsaturated Aldimines

K. Koga, S. Hashimoto, S. Yamada, 1979 .

Asymmetric synthesis of 2-substituted cycloalkanecarboxaldehydes

K. Tomioka, K. Koga, H. Kogen, 1979 .

Asymmetric synthesis of α-alkylated cyclic ketones via chiral chelated lithioenamines

K. Koga, S. Hashimoto, 1978 .

Catalytic asymmetric reaction of lithium ester enolates with imines

Mostafa A. Hussein, K. Tomioka, K. Koga, 1999 .

Stereoselective Reactions. XX. Synthetic Studies on Optically Active β-Lactams. III. Stereocontrolled Synthesis of Chiral Intermediate to (+)-Thienamycin from D-Glucose

K. Koga, O. Yoshino, N. Ikota, 1991 .

SYNTHETIC STUDIES ON OPTICALLY ACTIVE β-LACTAMS. STEREOCONTROLLED SYNTHESIS OF CHIRAL THIENAMYCIN INTERMEDIATE FROM D-GLUCOSE

K. Koga, O. Yoshino, N. Ikota, 1982 .

Stereoselective reactions. 14. Efficient enantioselective construction of quaternary carbon centers by the sequential dialkylation of (S)-.gamma.-[(trityloxy)methyl]-.gamma.-butyrolactone. Synthesis of optically active .beta.,.beta.-disubstituted .gamma.-butyrolactones

K. Tomioka, K. Koga, F. Sato, 1988 .

ASYMMETRIC REDUCTION OF ARYLGLYOXYLIC ACIDS VIA·HOST-GUEST COMPLEX FORMATION WITH OPTICALLY ACTIVE PARACYCLOPHANES

K. Koga, K. Odashima, I. Takahashi, 1985 .

Enantioselective conjugate addition of organocuprate using a chiral amidophosphine ligand

K. Tomioka, K. Koga, M. Kanai, 1992 .

A catalytic method for asymmetric nucleophilic aromatic substitution giving binaphthyls

K. Tomioka, M. Shindo, K. Koga, 1992 .

Stability−Reactivity Relation on the Reaction of β,β-Disubstituted Vinyl Cations with Ethanol

K. Koga, H. Yamataka, Shinjiro Kobayashi, 1996 .

ENANTIOSELECTIVE CONJUGATE ADDITION REACTION MEDIATED BY CHIRAL LIGANDS

K. Tomioka, K. Koga, Mineichi Sudani, 1985 .

Enantioselective allylic alkylation and amination catalyzed by a chiral P/N ligand-palladium complex

K. Koga, H. Kubota, 1996 .

Enantioselective palladium catalyzed allylic alkylation with phosphorus-containing C2-symmetric chiral amine ligands

K. Koga, H. Kubota, 1994 .

Asymmetric halolactonisation reaction—1

K. Koga, S. Terashima, S. Jew, 1979 .

An approach to catalytic asymmetric deprotonation of 4-substituted cyclohexanones

K. Koga, Arvind Kumar, Toyoharu Yamashita, 1996 .

Enantioselective deprotonation of 4-substituted cyclohexanones by chiral chelated lithium amides having a fluorine-containing alkyl group on amide nitrogen

H. Noguchi, K. Tomioka, K. Koga, 1993 .

Control of diastereoselectivity in alkylation of chiral lithium enolates mediated by a chiral secondary amine ligand

K. Koga, H. Kawasaki, Y. Hasegawa, 1993 .

Crystallographic and lithium-6 and nitrogen-15 NMR studies of a chiral bidentate lithium amide. An effect of aggregation states on an enantioselective deprotonation reaction

K. Koga, I. Shimada, H. Kawasaki, 1992 .

Enantioselective total synthesis of (+)-stoechospermol Via stereoselective intramolecular (2+2) photocycloaddition of the chiral butenolide☆

K. Tomioka, K. Koga, Masahide. Tanaka, 1994 .

Asymmetric total synthesis of stoechospermol using intramolecular (2+2) photocycloaddition reaction

K. Tomioka, K. Koga, Masahide. Tanaka, 1985 .

Enantioselective aldol reaction mediated by chiral lithium amide bases

K. Koga, H. Kawasaki, M. Muraoka, 1988 .

Asymmetric total synthesis of antileukemic sesquiterpene (+)-ivalin

K. Tomioka, K. Koga, Toyoharu Yamashita, 1984 .

Diastereoselective and enantioselective synthesis of 1,2-disubstituted cycloalkanecarboxaldehydes

K. Tomioka, K. Koga, H. Kogen, 1981 .

Asymmetric syntheses using tert-leucine. 1. An asymmetric synthesis of beta-substituted aldehydes via 1,4-addition of Grignard reagents to chiral alpha, beta-unsaturated aldimines.

K. Koga, S. Hashimoto, S. Yamada, 1976, Journal of the American Chemical Society.

Cyclophanes in Host-Guest Chemistry

K. Koga, K. Odashima, 1983 .

Host-guest complexation. 7. The binaphthyl structural unit in host compounds

G. Gokel, D. Cram, K. Koga, 1977 .

An asymmetric synthesis of cis, anti, cis-tricyclo[5,3,0,02,6]decanes applying γ-hydroxymethyl-γ-butyrolactone as a chiral synthon. First asymmetric total synthesis of (−)-β-bourbonene

K. Tomioka, K. Koga, Masahide. Tanaka, 1982 .

Stereoselective reactions. XXI. Asymmetric alkylation of α-alkyl β-keto esters to α,α-dialkyl β-keto esters having either (R)- or (S)-chiral quaternary center depending on the solvent system

K. Tomioka, K. Koga, K. Ando, 1993 .

Aerobic Oxidative Coupling of 2-Naphthol Derivatives Catalyzed by a Copper-Amine Complex without Solvent

K. Koga, S. Hashimoto, Masahiro Noji, 1998 .

Host-guest complexation. 8. Macrocyclic polyethers shaped by two rigid substituted dinaphthyl or ditetralyl units

R. Helgeson, D. Cram, K. Koga, 1978 .

Asymmetric alkylation of .alpha.-alkyl .beta.-keto esters

K. Tomioka, K. Koga, K. Ando, 1984 .

Enzyme Modelling with Crown Ethers

K. Koga, S. Sasaki, 1992 .

Catalytic asymmetric addition of organolithiums to aldimines

K. Tomioka, I. Inoue, M. Shindo, 1991 .

STUDIES DIRECTED TOWARDS THE ASYMMETRIC TOTAL SYNTHESIS OF ANTILEUKEMIC LIGNAN LACTONES. SYNTHESIS OF (-)-PODORHIZON

K. Tomioka, K. Koga, H. Mizuguchi, 1979 .

Synthesis of optically Active α-Alkyl or α-Aryl Acids from L-α-Amino Acids by the Use of Organocopper Reagents

K. Koga, S. Terashima, C. Tseng, 1979 .

Studies on optically active amino acids. XII. Synthesis, resolution and racemization of bicyclic alpha-amino-ketones.

K. Koga, T. Kunieda, S. Yamada, 1967, Chemical & pharmaceutical bulletin.

Podophyllotoxin aza-analogue, a novel DNA topoisomerase II inhibitor.

K. Tomioka, K. Koga, A. Iida, 2000, Chemical & pharmaceutical bulletin.

Synthesis and antitumor activity of podophyllotoxin aza analogues

K. Tomioka, K. Koga, Y. Kubota, 1989 .

A model for the diastereofacial differentiation in the alkylation of endocyclic enolate

K. Tomioka, K. Koga, H. Kawasaki, 1988 .

A rationale of diastereofacial selection in the alkylation of endocyclic enolates with chirality at the β-position

K. Tomioka, K. Koga, H. Kawasaki, 1986 .

Studies directed towards the asymmetric total synthesis of antileukemic lignan lactones. Synthesis of optically pure key intermediate and its utility

K. Tomioka, K. Koga, 1979 .

Stereochemical studies—XXX

K. Koga, M. Taniguchi, S. Yamada, 1974 .

Asymmetric total synthesis of natural (-)-and unnatural (+)-steganacin ☆ ☆☆: Determination of the absolute configuration of natural antitumor steganacin

K. Tomioka, K. Koga, Y. Iitaka, 1984 .

Synthetic Approaches Toward Verrucarin A. Chiral Synthesis of (-)-Verrucarinolactone.

K. Tomioka, K. Koga, F. Sato, 1982 .

Asymmetric total synthesis of the antileukaemic lignans (+)-trans-burseran and (–)-isostegane

K. Tomioka, K. Koga, T. Ishiguro, 1979 .

Studies on Optically Active Amino Acids. V. Synthesis of Optically Active α-Aminoalcohols by the Reduction of α-Amino Acid Esters with Sodium Borohydride

K. Koga, I. Matsuo, S. Yamada, 1965 .

Asymmetric halolactonisation reaction-2

K. Koga, S. Terashima, S. Jew, 1979 .

Branched-chain Sugars. XX. Kinetic Studies on the Epimerization of 1,2 : 5,6-Di-O-isopropylidene-3-C-nitromethyl-α-D-allofuranose

K. Koga, J. Yoshimura, H. Hashimoto, 1980 .

Asymmetric Diels–Alder reaction with use of (S)-5-(trityloxymetyl)pyrrolidin-2-one as a chiral auxiliary

K. Tomioka, K. Koga, T. Suenaga, 1990 .

Stereochemical Studies. XLIX. A Biogenetic-type Total Synthesis of Natural (+)-Maritidine from L-Tyrosine using highly Specific Asymmetric Cyclization

K. Tomioka, K. Koga, S. Yamada, 1977 .

A biogenetic-type asymmetric synthesis of natural (+)-maritidine from L-tyrosine

K. Tomioka, K. Koga, S. Yamada, 1976 .

Approaches to the Biogenetic-type Asymmetric Synthesis of Some Amaryllidaceae Alkaloids

K. Tomioka, K. Koga, S. Yamada, 1977 .

A Biogenetic-type Asymmetric Synthesis of Optically Active Amaryllidaceae Alkaloids: (+)- and (-)-Galanthamine from L-Tyrosine

K. Tomioka, K. Koga, S. Yamada, 1977 .

Stereochemical Studies. LIV. A Biogenetic-type Asymmetric Synthesis of optically Active Galanthamine from L-Tyrosine

K. Tomioka, K. Koga, S. Yamada, 1978 .

Asymmetric synthesis of optically active anthracyclinones

K. Koga, S. Terashima, S. Jew, 1979 .

Asymmetric synthesis of (R)-(−)−2-acetyl-1,2,3,4-tetrahydro-2-naphthol: a model study for the synthesis of optically active anthracyclinones

K. Koga, S. Terashima, S. Jew, 1977 .

Enantioselective protonation of achiral lithium enolates using a chiral amine in the presence of lithium bromide

K. Koga, T. Yasukata, 1993 .

Enantioselective methylation of the lithium enolate of 1-tetralone mediated by chiral C2-symmetric DMEU derivatives

K. Koga, S. Aoki, K. Ishii, 1997 .

Novel 3,4-diarylpyrrolidine-based chiral ligands for the asymmetric reaction of arylmagnesium bromides with aldehydes.

K. Tomioka, K. Koga, M. Nakajima, 1987 .

Asymmetric organolithium additions to imines

K. Tomioka, I. Inoue, M. Shindo, 1990 .

Absolute structure-cytotoxic activity relationships of steganacin congeners and analogues.

T. Tsuruo, K. Koga, S. Tanida, 1991, Journal of medicinal chemistry.

Stereoselective Reactions. VII. Synthesis of Racemic and Optically Pure Stegane, Isostegane, Picrostegane, and Isopicrostegane via Highly Selective Isomerization

K. Tomioka, K. Koga, H. Mizuguchi, 1985 .

Stereoselective Reactions. V. Design of the Asymmetric Synthesis of Lignan Lactones. Synthesis of optically Active Podorhizon and Deoxypodorhizon by 1, 3-Asymmetric Induction

K. Tomioka, K. Koga, H. Mizuguchi, 1982 .

First asymmetric total synthesis of (+)-steganacin determination of absolute stereochemistry

K. Tomioka, K. Koga, T. Ishiguro, 1980 .

Novel isomerization of dibenzocyclooctadiene lignan lactone —first synthesis of (±)-stegane—

K. Tomioka, K. Koga, H. Mizuguchi, 1979 .

Short-step asymmetric syntheses of anthracycline antibiotics via enantioselective dihydroxylation by osmium tetroxide with a chiral diamine

K. Tomioka, K. Koga, M. Nakajima, 1993 .

HOST-GUEST COMPLEXATION. PART 9. MACROCYCLIC POLYETHERS AND SULFIDES SHAPIED BY ONE RIGID DINAPHTHYL UNIT AND ATTACHED ARMS. SYNTHESIS AND SURVEY OF COMPLEXING ABILITIES

G. Gokel, R. Helgeson, D. Cram, 1978 .

Asymmetric synthesis mediated by chiral ligands

K. Koga, 1994 .

Diastereomeric host-guest complex formation by an optically active paracyclophane in water

K. Koga, K. Odashima, I. Takahashi, 1984 .

Chemical sensing based on membranes with supramolecular functions of biomimetic and biological origin

K. Koga, P. Bühlmann, Y. Umezawa, 1997 .

Simple chiral crown ethers complexed with potassium tert-butoxide as efficient catalysts for asymmetric Michael additions

K. Koga, S. Aoki, S. Sasaki, 1989 .

Receptor for a phosphonic acid monoester: salt formation stabilized by three hydrogen-bonding interactions

K. Koga, K. Manabe, T. Date, 1992 .

Approaches to the synthesis of enzyme model systems. Regioselective transacylation reactions between thiol-containing crown ethers and amino acid ester salts

K. Koga, T. Matsui, 1978 .

Complete optical resolution by differential complexation in solution between a chiral cyclic polyether and an .alpha.-amino acid

R. Helgeson, D. Cram, K. Koga, 1973 .

Enantioselective Reactions Using Chiral Lithium Amides.

K. Koga, 1990 .

Enantioselective deprotonation of the meso-forms of 2,6- and 3,5-dimethylcyclohexanones

R. Shirai, K. Koga, H. Kawasaki, 1990 .

Kinetic resolution of racemic 2-substituted cyclohexanones by enantioselective deprotonation

K. Koga, H. Kawasaki, M. Nakajima, 1989 .

Stereoselective reactions. XXXIV. Enantioselective deprotonation of prochiral 4-substituted cyclohexanones using chiral bidentate lithium amides having a bulky group instead of a phenyl group on the chiral carbon.

K. Koga, K. Sugasawa, S. Motohashi, 2001, Chemical & pharmaceutical bulletin.

Stereoselective reactions. XXXIIII. Design and synthesis of chiral bidentate amines having a bulky group on the chiral carbon.

K. Koga, M. Toriyama, A. Tokutake, 2001, Chemical & pharmaceutical bulletin.

Stereoselective reactions. 29. Lithium-hydrogen interchange between achiral tridentate lithium amides and chiral bidentate amines. An approach to catalytic enantioselective deprotonation

K. Koga, Arvind Kumar, Toyoharu Yamashita, 1997 .

Stereoselective reactions. 26. Solution structures of chiral bidentate lithium amide in relation to the solvent-dependent enantioselectivities in deprotonation reaction

K. Koga, I. Shimada, H. Kawasaki, 1997 .

Stereochemistry of enantioselective deprotonation of 4-substituted cyclohexanones by chiral bidentate lithium amides

M. Shindo, K. Koga, K. Sugasawa, 1997 .

Solution structures of a monodentate chiral lithium amide in the presence of lithium halide

H. Noguchi, M. Shindo, K. Koga, 1996 .

Anionic cyclophanes as hosts for cationic aromatic guests

K. Koga, Muneharu Miyake, M. Kirisawa, 1991 .

Effects of neutral salts on thermal stability of spinach ferredoxin.

K. Koga, S. Nakamura, H. Yoshizumi, 1979, Biochemical and biophysical research communications.

Receptors for oxo acids : effects of intra-ion-pair hydrogen bonding on acid-base equilibria

K. Koga, K. Manabe, K. Okamura, 1993 .

Modifications of hydrophobic cavity and their effects on the complex formation with a hydrophobic substrate

K. Koga, T. Soga, K. Odashima, 1980 .

2 + 2 Salt formation induced by hydrogen bonding

K. Koga, K. Manabe, T. Date, 1994 .

Functionalized Crown Ethers as an Approach to the Enzyme Model for the Synthesis of Peptides

K. Koga, S. Sasaki, M. Shionoya, 1986 .

Studies on Water-Soluble Artificial Receptors Containing Chiral Side Chains Derived from Carbohydrates. 2. Formation of Diastereomeric Inclusion Complexes between Optically Active Cyclophane TCP44 and Chiral Aromatic Guests in Acidic Aqueous Solutions

K. Koga, K. Isa, K. Odashima, 1999 .

Biomimetic studies using artificial systems. 3. Design, synthesis, and inclusion complex forming ability of a novel water-soluble paracyclophane possessing diphenylmethane skeletons

A. Itai, K. Koga, Y. Iitaka, 1985 .

Multi-functionalized chiral crown ethers as enzyme models for the synthesis of peptides. Multiple chiral recognition in the enzyme model

K. Koga, S. Sasaki, 1989 .

Chiral lithium 2-aminoalkoxides as reagents for enantioselective Michael reaction

K. Koga, S. Aoki, Takuya Kumamoto, 1994 .

Asymmetric Michael addition reaction of methyl phenylthioacetate to 2-cyclopentenone catalyzed by chiral crown - KOtBu complexes

K. Koga, S. Aoki, S. Sasaki, 1992 .

Rapid and area-specific coating of fluoride-incorporated apatite layers by a laser-assisted biomimetic process for tooth surface functionalization.

K. Koga, H. Miyaji, A. Oyane, 2018, Acta biomaterialia.

Deaminations of L-valine and L-valine benzyl ester.

K. Koga, M. Taniguchi, S. Yamada, 1969, Tetrahedron letters.

Laser-assisted biomimetic process for surface functionalization of titanium metal

Kenji Kawaguchi, K. Koga, N. Koshizaki, 2015 .

In situ precipitation of amorphous calcium phosphate nanoparticles within 3D porous collagen sponges for bone tissue engineering.

K. Koga, H. Miyaji, S. Miyata, 2020, Materials science & engineering. C, Materials for biological applications.

A physicochemical process for fabricating submicrometer hollow fluorescent spheres of Tb3+-incorporated calcium phosphate

K. Koga, N. Koshizaki, A. Oyane, 2015 .

Plasmonic Ag@TiO2 Core–Shell Nanoparticles for Enhanced CO2 Photoconversion to CH4

K. Koga, Dachao Hong, Yoshihiro Shimoyama, 2019, ACS Sustainable Chemistry & Engineering.

A physicochemical process for fabricating submicrometre calcium iron phosphate spheres

Kenji Kawaguchi, K. Koga, N. Koshizaki, 2014 .

1,1,4,7,10-10-Hexamethyltriethylenetetramine: a reagent to enhance the rate of alkylation reaction of the lithium enolate of 1-tetralone with alkyl halides

M. Shindo, K. Koga, K. Akimoto, 1999 .

Design and synthesis of novel chiral pyrrolidine-based diamines with C2-symmetry

K. Tomioka, K. Koga, M. Nakajima, 1993 .

Stereoselective total synthesis of 6-deoxy-L-hexose derivatives from L-alanine without a resolution step

K. Koga, T. Mizoguchi, S. Yamada, 1974 .

Functionalized Crown Ethers as an Approach to the Enzyme Model for the Synthesis of Peptides

K. Koga, S. Sasaki, M. Shionoya, 1985 .

PB183 TOTAL SYNTHESIS OF SESBANIMIDE A FROM D-GLUCOSE

K. Tomioka, K. Koga, A. Hagiwara, 1988 .

Stereoselective reactions: XIII. Total synthesis of (+)-sesbanine by a highly stereoselective cycloannelation reaction

K. Tomioka, K. Koga, 1988 .

Effect of periodate oxidation on the structure and properties of glucose oxidase.

K. Koga, S. Nakamura, S Nakamura, 1976, Biochimica et biophysica acta.

Biomimetic Studies Using Artificial Systems. II. Enantioselective Thiolysis of D- or L-α-Amino Acid Ester Salts by Thiol-Bearing Chiral Crown Ethers as an Enzyme Model

K. Koga, S. Sasaki, M. Kawasaki, 1985 .

Stereoselective Reactions. Part 13. Total Synthesis of (+)‐Sesbanine by a Highly Stereoselective Cycloanellation Reaction.

K. Tomioka, K. Koga, 1988 .

Stereoselective reactions. XII. Synthesis of antitumor-active steganacin analogs, picrosteganol and epipicrosteganol, by selective isomerization.

K. Tomioka, K. Koga, Y. Iitaka, 1986, Chemical & pharmaceutical bulletin.

An efficient chiral synthesis of (+)-sesbanine

K. Tomioka, K. Koga, 1980 .

Amino Acids and Peptides. III. A New Synthetic Approach to N-Acylated a-Amino Aldehydes from N-Acylated α-Amino Acids by Catalytic Reduction of Their Mixed Carbonic-Carboxylic Acid Anhydrides with Palladium-Charcoal

K. Koga, S. Yamada, H. Seki, 1972 .

A new synthesis of d-ribose from l-glutamic acid

K. Koga, M. Taniguchi, S. Yamada, 1971 .

Stereochemical Studies. XXXI. Total Synthesis of Several D-Pentose Derivatives. Stereochemical Courses of the Synthesis of Four Methyl 2, 3-Anhydro-5-O-benzyl-D-pentofuranosides from L-Glutamic Acid and Their Reactions with Nucleophiles

K. Koga, M. Taniguchi, S. Yamada, 1974 .

Chemistry of amino acids. 3. Reduction of phenylalanine ethyl ester and its derivatives with sodium borohydride.

K. Koga, S. Yamada, H. Seki, 1967, Chemical & pharmaceutical bulletin.

STEREOCHEMICAL STUDIES PART 31, TOTAL SYNTHESIS OF SEVERAL D-PENTOSE DERIVATIVES, STEREOCHEMICAL COURSES OF THE SYNTHESIS OF FOUR METHYL 2,3-ANHYDRO-5-O-BENZYL-D-PENTOFURANOSIDES FROM L-GLUTAMIC ACID AND THEIR REACTIONS WITH NUCLEOPHILES

K. Koga, M. Taniguchi, S. Yamada, 1975 .

STEREOCHEMICAL STUDIES PART 30, STEREOSELECTIVE SYNTHESIS OF D‐RIBOSE FROM L‐GLUTAMIC ACID

K. Koga, M. Taniguchi, S. Yamada, 1974 .

Reaction of 2-deoxy-6-O-[2,3-dideoxy-4,6-O-isopropylidene-2,3- (N-tosylepimino)-alpha-D-mannopyranosyl]-4,5-O-isopropylidene-1,3-di-N- tosylstreptamine with potassium hydrogenfluoride.

K. Koga, Y. Kobayashi, T. Tsuchiya, 1992, Carbohydrate Research.

A novel synthesis of (±)-2-acetyl-5,8-dimethoxy-1,2,3,4-tetrahydro-2-naphthol, a key intermediate for the synthesis of anthracyclinones

K. Koga, S. Terashima, N. Tanno, 1980 .

Stereochemical Studies. XVI. Deaminative Acetolyses of L-Valine and L-Valine Benzyl Ester

K. Koga, M. Taniguchi, S. Yamada, 1972 .

Stereochemical Studies. X. Effects of Neighboring Functional Groups on 1, 2-Asymmetric Induction in the Reduction of Propiophenone Derivatives with Sodium Borohydride

K. Koga, S. Yamada, 1972 .

Dramatic enantioselectivity change in dihydroxylation of olefins with chiral amine-osmium tetroxide complex

K. Tomioka, K. Koga, M. Nakajima, 1990 .

A short asymmetric synthesis of anthracycline antibiotics

K. Tomioka, K. Koga, M. Nakajima, 1989 .

Mechanistic aspects of asymmetric cis-dihydroxylation of olefins with osmium tetroxide employing a C2-symmetric chiral diamine

K. Tomioka, K. Koga, Y. Iitaka, 1988 .

Asymmetric Halolactonization Reactions. 3. Asymmetric Synthesis of optically Active Anthracyclinones

K. Koga, S. Terashima, S. Jew, 1979 .

Examinations on the neighboring aryl group participation in nitrous acid deaminations of l-phenylalanine and its p-nitro and p-methoxy derivatives. Conversion of l-phenylalanine to naturally occurring s-tropic acid

K. Koga, S. Yamada, Chin C. Wu, 1971 .

Stereochemical studies. XLVIII. Stereoselective synthesis of 6-deoxy-L-hexose derivatives from L-alanine without a resolution step.

K. Koga, T. Mizoguchi, S. Yamada, 1977 .

Reinvestigation on the optical purities of optically active trimethylsilyl enol ethers of 4-substituted cyclohexanones

K. Tomioka, K. Koga, K. Aoki, 1993 .

Stereoselective reactions. VIII. Stereochemical requirement for the benzylic oxidation of lignan lactone. A highly selective synthesis of the antitumor lignan lactone steganacin by the oxidation of stegane.

K. Tomioka, K. Koga, H. Mizuguchi, 1985, Chemical & pharmaceutical bulletin.

Laser ablation synthesis of monodispersed magnetic alloy nanoparticles

Kenji Koga, Hiroyuki Akinaga, Takafumi Seto, 2006 .

Stereoselective Reactions. X. Total Synthesis of Optically Pure Antitumor Lignan, Burseran

K. Tomioka, K. Koga, T. Ishiguro, 1985 .

Size- and temperature-dependent structural transitions in gold nanoparticles.

K. Koga, T. Ikeshoji, K. Sugawara, 2004, Physical review letters.

Regioselective intramolecular asymmetric cyclization of symmetrical open chain triketone

K. Koga, S. Terashima, Susumu Sato, 1980 .

Stereoselective reactions. XIX. Asymmetric dihydroxylation of olefins by employing osmium tetroxide-chiral amine complexes

K. Tomioka, K. Koga, M. Nakajima, 1990 .

A simple and convenient method for the preparation of a-substituted-a-diazoesters

K. Koga, T. Mizoguchi, S. Yamada, 1971 .

Stereoselective Reactions. XXII. Design and Synthesis of Chiral Chelated Lithium Amides for Enantioselective Reactions

R. Shirai, K. Koga, K. Aoki, 1994 .

Further physicochemical studies on the complex formation between iron-sulfur proteins and flavoproteins from spinach chloroplast and beef adrenal cortex electron-transfer systems.

K. Koga, S. Nakamura, H. Yoshizumi, 1982, Journal of biochemistry.

Short-range order in Cu-Pd alloys

K. Koga, K. Ohshima, D. Saha, 1992 .

Towards Automated Management and Analysis of Heterogeneous Data within Cannabinoids Domain

Maria Spichkova, Kenji Koga, Nitin Mantri, 2019, ENASE.

Local structure of Mn atoms and spins in Ag–Mn spin‐glass alloys

K. Koga, K. Ohshima, N. Niimura, 1993 .

Population statistics of gold nanoparticle morphologies: direct determination by HREM observations

K. Sugawara, K. Koga, 2003 .

Electronic and Catalytic Effects of Single-Atom Pd Additives on the Hydrogen Sensing Properties of Co3O4 Nanoparticle Films.

K. Koga, 2020, ACS applied materials & interfaces.

Laser synthesis and magnetic properties of monodispersed core–shell nanoparticles

H. Akinaga, T. Seto, K. Koga, 2004 .

Magnetic properties of monodispersed Ni/NiO core-shell nanoparticles.

H. Akinaga, T. Seto, K. Koga, 2005, The journal of physical chemistry. B.

RuO2 Nanoparticle-Embedded Graphitic Carbon Nitride for Efficient Photocatalytic H2 Evolution

K. Koga, Yusuke Yamada, Dachao Hong, 2021, ACS Applied Nano Materials.

Stereoselective reactions. Part 23. Asymmetric Michael reaction of α-alkyl β-keto esters via chiral enamines. Dependence of the diastereofacial selection on the combination of solvents and additives

K. Tomioka, K. Koga, K. Ando, 1994 .

Glucan-Binding Domainofa Glucosyltransferase fromStreptococcus sobrinus: Isolation ofa 55-Kilodalton Peptide froma Trypsin Digest ofGlucosyltransfer ase Prebound toInsoluble Glucan

K. Koga, Y. Hasegawa, Shunsuke Kobayashi, 1989 .

Dielectric Mismatch Mediates Carrier Mobility in Organic-Intercalated Layered TiS2.

K. Koga, Ronggui Yang, K. Koumoto, 2015, Nano letters.

Stereoselective reactions. 15.1 total synthesis of (+)-ivalin by utilizing asymmetric double alkylation reaction of α,β-unsaturated aldimine

K. Tomioka, K. Koga, Toyoharu Yamashita, 1989 .

Stereoselective Reactions. Part 15. Total Synthesis of (+)-Ivalin by Utilizing Asymmetric Double Alkylation Reaction of α,β-Unsaturated Aldimine.

K. Tomioka, K. Koga, Toyoharu Yamashita, 1989 .

Inhibitory effects of Maillard reaction products on glucosyl-transferase of Streptococcus mutans

K. Koga, Y. Hasegawa, Shunsuke Kobayashi, 1988 .

Amino Acids and Peptides. II. A One-Step Synthesis of Atropine and Other Related Alkaloids from dl-Phenylalanine 3α-Tropanyl Ester

K. Koga, Y. Takéuchi, T. Shioiri, 1971 .

Synthesis and properties of water-soluble bis-paracyclophanes

K. Koga, K. Odashima, Chung‐Fang Lai, 1985 .

Electronic structure and thermoelectric properties of clathrate compounds Ba8AlxGe46−x

K. Koga, T. Uemura, Terumitsu Tanaka, 2008 .

Fabrication of crystalline silicon spheres by selective laser heating in liquid medium.

K. Koga, Xiangyou Li, N. Koshizaki, 2011, Langmuir : the ACS journal of surfaces and colloids.

Catalytic asymmetric protonation of achiral lithium enolates mediated by a chiral tetraamine ligand with water as a proton source

K. Koga, Y. Yamashita, K. Odashima, 2000 .

An Approach to Catalytic Enantioselective Protonation of Prochiral Lithium Enolates

K. Koga, P. Rivière,, 1997 .

Formation of size-selected Ni/NiO core-shell particles by pulsed laser ablation

T. Seto, K. Koga, T. Orii, 2004 .

Study of Zn-Substituted Germanium Clathrates as High Performance Thermoelectric Materials Assisted by First-Principles Electronic Structure Calculation

K. Koga, H. Anno, Terumitsu Tanaka, 2009 .

Novel bidecahedral morphology in gold nanoparticles frozen from liquid.

K. Koga, 2006, Physical review letters.

Structure of large gold clusters obtained by global optimization using the minima hopping method

Stefan Goedecker, Kenji Koga, Frédéric Lançon, 2009 .

Design and synthesis of novel C2-symmetric chiral piperazines and an application to asymmetric acylation of sigma-symmetric 1,2-diols.

R. Shirai, K. Koga, K. Kakiuchi, 2006, Organic letters.

ENANTIOSELECTIVE HORNER-WADSWORTH-EMMONS REACTION USING CHIRAL LITHIUM 2-AMINOALKOXIDES

K. Koga, Takuya Kumamoto, 1997 .

Enantioselective Horner-Wadsworth-Emmons Reaction Using Chiral Lithium 2-Aminoalkoxides.

K. Koga, Takuya Kumamoto, 1997 .

STUDIES ON OPTICALLY ACTIVE AMINO ACIDS. IV. A NEW SYNTHETIC APPROACH TO CHLORAMPHENICOL BASE FROM L-PHENYLALANINE.

K. Koga, H. Matsuo, S. Yamada, 1963, Chemical & pharmaceutical bulletin.

Stereoselective Reactions. XI. : Asymmetric Alkylation of Cyclohexanone via Chiral Chelated Lithioenamines Derived from D-Camphor Derivatives

K. Koga, H. Sakai, N. Ikota, 1986 .

Stereoselective Reactions. Part 11. Asymmetrie Alkylation of Cyclohexanone via Chiral Chelated Lithioenamines Derived from D-Camphor Derivatives.

K. Koga, H. Sakai, N. Ikota, 1986 .

United States-Japan Seminar on Host-Guest Chemistry

George W. Gokel, Kenji Koga, G. Gokel, 1989 .

Role of stress in the self-limiting oxidation of copper nanoparticles.

K. Koga, Tomohiko Yamaguchi, K. Sugawara, 2005, The journal of physical chemistry. B.

Stereoselective Reactions. Part 31: Catalytic Asymmetric Alkylation of Achiral Lithium Enolates Using a Chiral Tetradentate Amine in the Presence of an Achiral Bidentate Amine

K. Koga, H. Kawasaki, K. Manabe, 2000 .

Factors controlling the diastereoface selectivity in the complementary asymmetric alkylation of α-alkyl β-keto esters

K. Tomioka, K. Koga, K. Ando, 1985 .

Stereoselective Reactions. II. Asymmetric Synthesis of β-Substituted Aldehydes by Michael Reaction using Chiral α, β-Unsaturated Aldimines

K. Koga, S. Hashimoto, N. Komeshima, 1979 .

Electronic structure and optical properties of binary skutterudite antimonides

K. Koga, K. Akai, M. Matsuura, 2005 .

Gas-phase generation of noble metal-tipped NiO nanorods by rapid thermal oxidation

K. Koga, M. Hirasawa, 2014 .

Phase Separation in La2CuO4+δSingle Crystals

M. Fujita, K. Koga, K. Ohshima, 1995 .

In situ observation of coalescence growth of small gold clusters by X-ray diffraction technique

K. Koga, H. Takeo, 1999 .

IN SITU GRAZING-INCIDENCE X-RAY-DIFFRACTION AND ELECTRON-MICROSCOPIC STUDIES OF SMALL GOLD CLUSTERS

K. Koga, K. Ohshima, H. Takeo, 1998 .

In situ grazing incidence x‐ray diffraction system for clusters deposited on a low‐temperature substrate

K. Koga, H. Takeo, 1996 .

X-ray effects on the oxidation of Cu nanoparticles

K. Koga, Chun-Hua Chen, 2011 .

Dielectric Mismatch Mediates Carrier Mobility in Organic-Intercalated Layered TiS2.

K. Koga, Ronggui Yang, K. Koumoto, 2015, Nano letters.

Flexible n-type thermoelectric materials by organic intercalation of layered transition metal dichalcogenide TiS2.

K. Koga, Ronggui Yang, K. Koumoto, 2015, Nature materials.

Chromatographic Separation of Armatic Guest Compounds by a Gel-Immobilized Water-Soluble Cyclophane

K. Koga, K. Manabe, K. Odashima, 1992 .

Specific Inhibition of Insoluble Glucan Synthase (GTF-I) by Maillard Reaction Products from Casein and Albumins

K. Koga, Y. Hasegawa, Shunsuke Kobayashi, 1990 .

Effects of ion-pair structure on relative basicity in chloroform: acid-base equilibria controlled by steric repulsion, .pi.-stacking interactions, and hydrogen bonding within an ion pair

K. Koga, K. Manabe, T. Date, 1993 .

DESIGN AND SYNTHESES OF PARACYCLOPHANES HAVING CHARGED SIDE CHAINS THAT ARE SOLUBLE IN NEUTRAL AQUEOUS SOLUTION

K. Koga, K. Odashima, 1981 .

Construction of contiguous quaternary and tertiary carbon centres via the asymmetric Michael reaction

K. Tomioka, K. Koga, K. Yasuda, 1987 .

Enantioselective Deprotonation of 4-tert-Butylcyclohexanone by Fluorine-Containing Chiral Lithium Amides Derived from α-Phenethylamine

K. Koga, K. Aoki, 1997 .

Catalytic Asymmetric Benzylation of Achiral Lithium Enolates Using a Chiral Ligand for Lithium in the Presence of an Achiral Ligand

K. Koga, H. Kawasaki, K. Manabe, 1994 .

Asymmetric synthesis of optically pure (R)(−)-2-acetyl-5,8-dimethoxy-1,2,3,4-tetrahydro-2-naphthol, a key intermediate for optically active anthracyclinone synthesis

K. Koga, S. Terashima, N. Tanno, 1980 .