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Catalytic Aerobic Chemoselective α-Oxidation of Acylpyrazoles en Route to α-Hydroxy Acid Derivatives.Platinum-catalyzed direct amination of allylic alcohols under mild conditions: ligand and microwave effects, substrate scope, and mechanistic study.Enantioselective total syntheses of several bioactive natural products based on the development of practical asymmetric catalysis.A novel anti-microtubule agent with carbazole and benzohydrazide structures suppresses tumor cell growth in vivo.Rh-catalyzed direct enantioselective alkynylation of α-ketiminoesters.Enantioselective total synthesis of (-)-strychnine using the catalytic asymmetric Michael reaction and tandem cyclization.Catalytic asymmetric Michael reaction of beta-keto esters: effects of the linker heteroatom in linked-BINOL.Direct catalytic asymmetric aldol-Tishchenko reaction.Theoretical study of Al(III)-catalyzed conversion of glyoxal to glycolic acid: dual activated 1,2-hydride shift mechanism by protonated Al(OH)3 species.Zinc-catalyzed cycloisomerizations. Synthesis of substituted furans and furopyrimidine nucleosides.Enantio- and diastereoselective catalytic Mannich-type reaction of a glycine schiff base using a chiral two-center phase-transfer catalyst.Catalytic asymmetric epoxidation of alpha,beta-unsaturated esters using an yttrium-biphenyldiol complex.Dynamic structural change of the self-assembled lanthanum complex induced by lithium triflate for direct catalytic asymmetric aldol-Tishchenko reaction.Asymmetric alkynylation of aldehydes catalyzed by an In(III)/BINOL complex.Highly Enantio- and s-trans C=C bond selective catalytic hydrogenation of cyclic enones: alternative synthesis of (-)-menthol.Transesterification of various methyl esters under mild conditions catalyzed by tetranuclear zinc cluster.Enzyme-like chemoselective acylation of alcohols in the presence of amines catalyzed by a tetranuclear zinc cluster.μ-Oxo-Dinuclear-Iron(III)-Catalyzed O-Selective Acylation of Aliphatic and Aromatic Amino Alcohols and Transesterification of Tertiary Alcohols.Direct Access to N-Unprotected α- and/or β-Tetrasubstituted Amino Acid Esters via Direct Catalytic Mannich-Type Reactions Using N-Unprotected Trifluoromethyl Ketimines.Direct catalytic asymmetric aldol reaction: synthesis of either syn- or anti-alpha,beta-dihydroxy ketones.Bioconjugation with Thiols by Benzylic Substitution.A short scalable route to (-)-α-kainic acid using Pt-catalyzed direct allylic amination.Dual platinum and pyrrolidine catalysis in the direct alkylation of allylic alcohols: selective synthesis of monoallylation products.Sodium methoxide: a simple but highly efficient catalyst for the direct amidation of esters.Direct use of allylic alcohols for platinum-catalyzed monoallylation of amines.Direct conversion of esters, lactones, and carboxylic acids to oxazolines catalyzed by a tetranuclear zinc cluster.Isomeric methoxy analogs of nimesulide for development of brain cyclooxygense-2 (COX-2)-targeted imaging agents: Synthesis, in vitro COX-2-inhibitory potency, and cellular transport properties.Platinum-catalyzed direct amination of allylic alcohols with aqueous ammonia: selective synthesis of primary allylamines.Radiolabeled γ-polyglutamic acid complex as a nano-platform for sentinel lymph node imaging.A practical large-scale synthesis of enantiomerically pure 3-[bis(methoxycarbonyl)methyl]cyclohexanone via catalytic asymmetric Michael reactionLigand accelerated indium(iii)-catalyzed asymmetric alkynylation of aldehydes with 2-methyl-3-butyn-2-ol as an ethyne equivalent donorA New Entry in Catalytic Alkynylation of Aldehydes and Ketones: Dual Activation of Soft Nucleophiles and Hard Electrophiles by an Indium(III) CatalystCatalytic asymmetric synthesis of both syn- and anti-3,5-dihydroxy esters: application to 1,3-polyol/alpha-pyrone natural product synthesisUnique reactivity of alpha,beta-unsaturated carboxylic acid imidazolides: catalytic asymmetric synthesis of alpha,beta-epoxy esters and alpha,beta-epoxy carboxylic acid derivativesDirect catalytic enantio- and diastereoselective aldol reaction using a Zn-Zn-linked-BINOL complex: a practical synthesis of syn-1,2-diolsCatalytic asymmetric synthesis of alpha,beta-epoxy esters, aldehydes, amides, and gamma,delta-epoxy beta-keto esters: unique reactivity of alpha,beta-unsaturated carboxylic acid imidazolidesShort synthesis of (+)-cylindricine C by using a catalytic asymmetric Michael reaction with a two-center organocatalystCatalytic asymmetric epoxidation of alpha,beta-unsaturated esters with chiral yttrium-biaryldiol complexesCatalytic asymmetric phase-transfer Michael reaction and Mannich-type reaction of glycine Schiff bases with tartrate-derived diammonium saltsDynamic ligand exchange of the lanthanide complex leading to structural and functional transformation: one-pot sequential catalytic asymmetric epoxidation-regioselective epoxide-opening process
P50
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P50
description
onderzoeker
@nl
researcher
@en
հետազոտող
@hy
name
Takashi Ohshima
@ast
Takashi Ohshima
@en
Takashi Ohshima
@es
Takashi Ohshima
@nl
Takashi Ohshima
@sl
type
label
Takashi Ohshima
@ast
Takashi Ohshima
@en
Takashi Ohshima
@es
Takashi Ohshima
@nl
Takashi Ohshima
@sl
prefLabel
Takashi Ohshima
@ast
Takashi Ohshima
@en
Takashi Ohshima
@es
Takashi Ohshima
@nl
Takashi Ohshima
@sl
P106
P31
P496
0000-0001-9817-6984