K. Okamura

发表

Catalytic asymmetric nitroaldol reaction using optically active rare earth BINOL complexes : investigation of the catalyst structure

Koichi Tanaka, M. Shibasaki, H. Sasai, 1993 .

Synthesis biological evaluation of alkyl, alkoxy, alkylthio, or amino-substituted 2,3-dihydro-1,5-benzothiazepin-4(5H)-ones.

H. Inoue, T. Nagao, H. Narita, 1997, Chemical & pharmaceutical bulletin.

The practical resolution of (2RS,3RS)-2-hydroxy-3-(4-methoxyphenyl)-3-(2-nitrophenylthio)propionic acid, a key intermediate for diltiazem, with L-lysine.

T. Date, K. Okamura, K. Shibata, 1989 .

A NEW STEREOSELECTIVE ROUTE TO γ-BUTYROLACTONES : ASYMMETRIC SYNTHESES OF (+)-trans-WHISKY AND (+)-trans-COGNAC LACTONES

T. Shinada, O. Miyata, T. Naito, 1992 .

Synthesis of amino acids and related compounds. 42. A novel transformation of imidazolines into 2,4,6-trisubstituted pyrimidine derivatives

H. Kubota, A. Kinumaki, M. Seki, 1993 .

Formal Total Synthesis of (-)-Dendrobine Using Zirconium-Promoted Reductive Cyclization

M. Shibasaki, M. Mori, F. Saitoh, 1994 .

Novel Synthesis of Heterocycles Using Zirconium-Catalyzed Diene Cyclization

M. Mori, N. Uesaka, T. Date, 1994 .

Synthesis and X-ray crystal structures of tricyclic ketone containing trans-fused bicyclo[3.3.0]octane unit

M. Mori, F. Saitoh, T. Date, 1995 .

A New Multifunctional Heterobimetallic Asymmetric Catalyst for Michael Additions and Tandem Michael–Aldol Reactions

M. Shibasaki, T. Arai, H. Sasai, 1996 .

Stereospecific nucleophilic addition reactions to olefins. Addition of thiols to .alpha.,.beta.-unsaturated carboxylic acid derivatives

T. Shinada, S. Inagaki, O. Miyata, 1991 .

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 .

A new synthesis of 2,2′-disubstituted unsymmetrical biphenyls based on the intramolecular Ullmann coupling reaction utilising salicyl alcohol as a template

H. Ohmizu, K. Kondo, T. Ogiku, 1993 .

A facile conversion of ethoxydihydropyrans to 4-cyanoethylisoxazoles

S. Akiyama, M. Yamauchi, T. Date, 1996 .

Formal Total Synthesis of (‐)‐Dendrobine Using Zirconium‐Promoted Reductive Cyclization.

M. Shibasaki, M. Mori, F. Saitoh, 1995 .

A New Ring System from Photocycloaddition of 6-Chloro-1,3-dimethyluracil to p- and m-Xylene. Formation of 6-Methylene-9,11,x-trimethyl-9,11-diazapentacyclo(6.4.0.01,3.02,5.04,8)dodecane-10,12-diones.

K. Seki, K. Ohkura, T. Date, 1993 .

Hydroximate as a synthetically useful functional group: A novel synthesis of lactones using hydroximates as a tether

A. Nishiguchi, O. Miyata, T. Naito, 1996 .

Stereospecific Amination by Dynamic Kinetic Resolution Utilizing 2-Oxoimidazolidine-4-carboxylate as a Novel Chiral Auxiliary

H. Kubota, A. Kubo, R. Shimizu, 1995 .

Utilization of Me3SiSnBu3 in organic synthesis. Generation of o-quinodimethane from α,α′-dibromo-o-xylene and Me3SiSnBu3-CsF

M. Mori, Naohiro Isono, Hiroki Sato, 1994 .

Novel Synthesis of Heterocycles Using Zirconium-Catalyzed Diene Cyclization.

M. Mori, N. Uesaka, T. Date, 1995 .

A two-step synthesis of 2-exo-substituted 2-endo-aminonorbornenes from 2-acetamidonorbornene-2-carboxylic acids

H. Horikawa, T. Nishitani, T. Date, 1991 .

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

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

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 .

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

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

2 + 2 Salt formation induced by hydrogen bonding

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

Crystal structures of diastereomeric 1:1 complexes of (R)- and (S)-phenylalanine (S)-mandelic acid

Tadashi Sato, H. Hiramatsu, K. Aoe, 1997 .

Crystal structure–solubility relationships in optical resolution by diastereomeric salt formation of DL-phenylglycine with (1S)-(+)-camphor-10-sulfonic acid

H. Hiramatsu, S. Yamada, K. Okamura, 2000 .

Chiral Recognition by Atmospheric Pressure Chemical Ionizaion Mass Spectrometry.

K. Hashimoto, K. Okamura, Y. Sumida, 1993 .

Highly Effective Resolution of 1, 3-Dibenzyl-6-hydroxy-3, 3a, 6, 6a-tetrahydro-1H-furo[3, 4-d]imidazole-2, 4-dione, an Intermediate for Biotin, with Optically Active Amines and Reutilizatin of the Unwanted Epimer

A. Kinumaki, T. Date, M. Seto, 1990 .

Quinazolin-2-ones Having a Spirohydantoin Ring. III. A General and Efficient Synthesis of 3'-Substituted Spiro[imidazolidine-4, 4'(1'H)-quinazoline]-2, 2', 5(3'H)-triones

Yoshihisa Yamada, K. Ozaki, T. Date, 1991 .

Racemic syntheses of agelasimine-A and agelasimine-B, bicyclic diterpenoids from the marine sponge Agelas mauritiana

T. Allen, M. Ohba, T. Fujii, 1995 .

Racemic Syntheses of Agelasimine‐A and Agelasimine‐B, Bicyclic Diterpenoids from the Marine Sponge Agelas mauritiana.

T. Allen, M. Ohba, T. Fujii, 1995 .

Double Diels-Alder Cycloadditions of 2(1H)-Pyridones Acting as Dienophiles.

H. Nakano, H. Hongo, K. Okamura, 1991 .

Optical Resolution, Characterization, and X-Ray Crystal Structures of Diastereomeric Salts of Chiral Amino Acids with (S)-(-)-1-Phenylethanesulfonic Acid.

T. Date, K. Okamura, R. Yoshioka, 1994 .

The Role of Water-Solvation in the Optical Resolution of DL-Leucine with (S)-(−)-1-Phenylethanesulfonic Acid. Characterization and X-Ray Crystal Structures of Their Diastereomeric Salts

K. Aoe, S. Yamada, T. Date, 1998 .

The Role of Water-Solvation in the Optical Resolution of DL-Leucine with (S)-(-)-1-Phenylethanesulfonic Acid. Characterization and X-Ray Crystal Structures of Their Diastereomeric Salts.

K. Aoe, S. Yamada, T. Date, 1998 .

Synthesis of N-substituted C-normorphinans and their pharmacological properties.

H. Inoue, T. Date, S. Saito, 1992, Chemical and pharmaceutical bulletin.

Synthesis of N‐Substituted C‐Normorphinans and Their Pharmacological Properties.

T. Date, K. Okamura, H. Inoue, 1992 .

Structures of Antafumicins A and B, Novel Antifungal Substances Produced by the Fungus Aspergillus niger NH-401.

H. Miyagawa, Y. Fujimoto, T. Ueno, 1993, Bioscience, biotechnology, and biochemistry.

Investigation of the Crystal Structure for the Direct Chiral Separation Model in High-Performance Liquid Chromatography

Y. Fujiwara, K. Hashimoto, T. Date, 1995 .

Purines. LXVII. An Alternative Synthesis of Adenine 7-Oxide : N-Oxidation of the Adenine Ring Utilizing Blocking/Deblocking at the 1-Position

T. Fujii, K. Ogawa, Tohru Saito, 1995 .

Purines. LXVI. Adenine 7-Oxide: Its Synthesis, Chemical Properties, and X-ray Molecular Structure.

T. Fujii, K. Ogawa, Tohru Saito, 1995 .

Synthesis of the optically active trans-isomers of diltiazem and their cardiovascular effects and Ca-antagonistic activity.

H. Inoue, T. Yamaguchi, K. Kikkawa, 1992, Chemical & pharmaceutical bulletin.

Purines. Part 66. Adenine 7‐Oxide: Its Synthesis, Chemical Properties, and X‐Ray Molecular Structure.

T. Fujii, K. Ogawa, Tohru Saito, 1995 .

Chiral Recognition in High Performance Liquid Chromatography/Atmospheric Pressure Chemical Ionization Mass Spectrometry

Y. Fujiwara, K. Hashimoto, Haedeuk Kim, 1995 .

Synthesis of the Optically Active trans‐Isomers of Diltiazem and Their Cardiovascular Effects and Ca‐Antagonistic Activity.

Takashi Tanaka, T. Nagao, K. Kikkawa, 1993 .

Investigation of the Crystal Structure for the Direct Chiral Model in High-Performance Liquid Chromatography Separation

Yoshio, Sumida, Fujiwara, 2006 .

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 .

A highly stereoselective synthesis of 3-hydroxy-1-aryltetralin lignans based on the stereoselective hydroxylation of α,β-dibenzyl-γ-butyro-lactones: the first synthesis of (±)-cycloolivil

T. Ukita, H. Ohmizu, Y. Moritani, 1996 .

A Highly Stereoselective Synthesis of 3-Hydroxy-1-aryltetralin Lignans based on the Stereoselective Hydroxylation of α,β-Dibenzyl-. gamma.-butyrolactones: The First Synthesis of (.+-.)-Cycloolivil.

T. Ukita, H. Ohmizu, Y. Moritani, 1997 .

TMC-2A, -2B and -2C, new dipeptidyl peptidase IV inhibitors produced by Aspergillus oryzae A374. II. Isolation and structure determination.

Y. Asai, N Nonaka, Y Asai, 1997, The Journal of antibiotics.