Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Total synthesis of (-)-epimyrtine by a gold-catalyzed hydroamination approach.

ABSTRACT: A new approach to the total synthesis of (-)-epimyrtine has been developed from D-alanine. The key step to access the enantiopure pyridone intermediate was achieved by a gold-mediated cyclization. Finally, various transformations afforded the natural product in a few steps and good overall yield.

SUBMITTER: Trinh TT

PROVIDER: S-EPMC3817515 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

Total synthesis of (-)-epimyrtine by a gold-catalyzed hydroamination approach.

Trinh Thi Thanh Huyen TT Nguyen Khanh Hung KH de Aguiar Amaral Patricia P Gouault Nicolas N

Beilstein journal of organic chemistry 20131009

A new approach to the total synthesis of (-)-epimyrtine has been developed from D-alanine. The key step to access the enantiopure pyridone intermediate was achieved by a gold-mediated cyclization. Finally, various transformations afforded the natural product in a few steps and good overall yield. ...[more]

PMID: 24204417

Similar Datasets

Gold-catalyzed intermolecular hydroamination of allenes with sulfonamides.

Project description:A co-catalyst of (PPh3)AuCl/AgOTf for the intermolecular hydroamination of allenes with sulfonamides is shown. The reaction proceeded smoothly under mild conditions for differently substituted allenes giving N-allylic sulfonamides in good yields with high regioselectivity and E-selectivity.

| S-EPMC3678397 | biostudies-literature

Gold(I)-Catalyzed Intermolecular Hydroamination of Allenes with Arylamines.

Project description:A mixture of (3)AuCl [3 = P(t-Bu)(2)o-biphenyl] and AgOTf catalyzes the intermolecular hydroamination of monosubstituted and 1,1- and 1,3-disubstituted allenes with primary and secondary arylamines.

| S-EPMC3011227 | biostudies-literature

Gold-catalyzed intermolecular Markovnikov hydroamination of allenes with secondary amines.

Project description:A cationic (CAAC)gold(I) complex promotes the addition of all types of nontertiary amines to a variety of allenes, affording allylic amines in good to excellent yields; the amino fragment always adds to the less substituted terminus of the CCC skeleton.

| S-EPMC2739117 | biostudies-literature

Mechanistic study of gold(I)-catalyzed intermolecular hydroamination of allenes.

Project description:The intermolecular hydroamination of allenes occurs readily with hydrazide nucleophiles, in the presence of 3-12% Ph(3)PAuNTf(2). Mechanistic studies have been conducted to establish the resting state of the gold catalyst, the kinetic order of the reaction, the effect of ligand electronics on the overall rate, and the reversibility of the last steps in the catalytic cycle. We have found the overall reaction to be first order in gold and allene and zero order in nucleophile. Our studies suggest that the rate-limiting transition state for the reaction does not involve the nucleophile and that the active catalyst is monomeric in gold(I). Computational studies support an "outersphere" mechanism and predict that a two-step, no intermediate mechanism may be operative. In accord with this mechanistic proposal, the reaction can be accelerated with the use of more electron-deficient phosphine ligands on the gold(I) catalyst.

| S-EPMC2939907 | biostudies-literature

Gold(I)-Catalyzed Enantioselective Intramolecular Hydroamination of Allenes with Ureas.

Project description:Enantioselective intramolecular hydroamination of N-allenyl ureas catalyzed by an enantiomerically enriched bis(gold) phosphine complex forms pyrrolidine derivatives in good yield with up to 93% ee.

| S-EPMC3169097 | biostudies-literature

Asymmetric Synthesis of ?-Amino Alcohols by Copper-Catalyzed Hydroamination.

Project description:Asymmetric synthesis of ?-amino alcohols from unprotected allylic alcohols by a copper-catalyzed hydroamination strategy has been developed. Using easily accessible starting materials, a range of chiral 1,3-amino alcohols were prepared with excellent regio- and enantioselectivity. Further, this protocol provided an efficient one-step method for the enantioselective synthesis of ?-amino alcohols in an intermolecular manner.

| S-EPMC6956864 | biostudies-literature

Gold and BINOL-phosphoric acid catalyzed enantioselective hydroamination/N-sulfonyliminium cyclization cascade.

Project description:A highly enantioselective hydroamination/N-sulfonyliminium cyclization cascade is reported using a combination of gold(I) and chiral phosphoric acid catalysts. An initial 5-exo-dig hydroamination and a subsequent phosphoric acid catalyzed cyclization process provide access to complex sulfonamide scaffolds in excellent yield and high enantiocontrol. The method can be extended to lactam derivatives, with excellent yields and enantiomeric excesses of up to 93% ee.

| S-EPMC3931332 | biostudies-literature

Enantioselective total synthesis of (-)-nardoaristolone B via a gold(I)-catalyzed oxidative cyclization.

Project description:The first enantioselective total synthesis of (-)-nardoaristolone B is accomplished by the implementation of an enantio- and diastereoselective copper(I)-catalyzed conjugate addition/enolate trapping sequence and a gold(I)-catalyzed oxidative cyclization (intermolecular oxidant), employed for the first time in total synthesis.

| S-EPMC4322447 | biostudies-other

Total Synthesis of (+)-Raputindole A: An Iridium-Catalyzed Cyclization Approach.

Project description:This work describes the total synthesis of raputindole A (1) through a convergent approach that features (1) an iridium-catalyzed cyclization to assemble the tricyclic core of the northern part, (2) enzymatic resolution to secure the preparation of an enantiomerically pure benzylic alcohol intermediate, and (3) the installation of the isobutenyl side chain via methallylation of the corresponding benzylic carbocation and coupling of the northern and southern parts via the Heck reaction. (+)-Raputindole A (1) was prepared in 10 steps (longest linear sequence) in 3.3% overall yield.

| S-EPMC7450706 | biostudies-literature

Enantioselective synthesis of ?-aminosilanes by copper-catalyzed hydroamination of vinylsilanes.

Project description:The synthesis of ?-aminosilanes by a highly enantio- and regioselective copper-catalyzed hydroamination of vinylsilanes is reported. The system employs Cu-DTBM-SEGPHOS as the catalyst, diethoxymethylsilane as the stoichiometric reductant, and O-benzoylhydroxylamines as the electrophilic nitrogen source. This hydroamination reaction is compatible with differentially substituted vinylsilanes, thus providing access to amino acid mimics and other valuable chiral organosilicon compounds.

| S-EPMC4384418 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data