The Orthoester Johnson–Claisen Rearrangement in the Synthesis of Bioactive Molecules, Natural Products, and Synthetic Intermediates–Recent Advances

RA Fernandes, AK Chowdhury… - European Journal of …, 2014 - Wiley Online Library
Abstract The orthoester Johnson–Claisen rearrangement, an important C–C bond forming
reaction, has been used enormously in the past four decades in the synthesis of bioactive …

[PDF][PDF] Highly Enantioselective α Alkylation of Aldehydes with 1, 3‐Benzodithiolylium Tetrafluoroborate: A Formal Organocatalytic α Alkylation of Aldehydes by the …

A Gualandi, E Emer, MG Capdevila… - … Chemie-German Edition, 2011 - academia.edu
The benzodithiol heterocycle 1 (Scheme 1) is an interesting and readily available synthon
for organic synthesis.[1] The application of the easily formed carbanion 2 and carbocation 3 …

Direct Regiospecific and Highly Enantioselective Intermolecular α‐Allylic Alkylation of Aldehydes by a Combination of Transition‐Metal and Chiral Amine Catalysts

S Afewerki, I Ibrahem, J Rydfjord… - … A European Journal, 2012 - Wiley Online Library
The first direct intermolecular regiospecific and highly enantioselective α‐allylic alkylation of
linear aldehydes by a combination of achiral bench‐stable Pd0 complexes and simple chiral …

Arundic acid a potential neuroprotective agent: biological development and syntheses

RA Fernandes, AB Ingle - Current Medicinal Chemistry, 2013 - ingentaconnect.com
Arundic acid has been experimented in vitro and in vivo as a potential neuroprotective
agent. It modulates astrocyte activation by inhibiting the enhanced astrocytic synthesis of S …

[PDF][PDF] Asymmetric allylic alkylation of acyclic allylic ethers with organolithium reagents

M Perez, M Fananas-Mastral, V Hornillos… - … : a European Journal, 2012 - research.rug.nl
Asymmetric allylic substitution is one of the most powerful synthetic transformations with
numerous applications in the total synthesis of biologically active compounds and natural …

Widely Applicable Synthesis of Enantiomerically Pure Tertiary Alkyl‐Containing 1‐Alkanols by Zirconium‐Catalyzed Asymmetric Carboalumination of Alkenes and …

S Xu, CT Lee, G Wang, E Negishi - Chemistry–An Asian Journal, 2013 - Wiley Online Library
A highly enantioselective and widely applicable method for the synthesis of various chiral 2‐
alkyl‐1‐alkanols, especially those of feeble chirality, has been developed. It consists of …

Stereoselective Total Synthesis of (+)‐Nephrosteranic Acid and (+)‐Roccellaric Acid through Asymmetric Dihydroxylation and Johnson–Claisen Rearrangement

RA Fernandes, AK Chowdhury - 2011 - Wiley Online Library
An efficient stereoselective total synthesis of (+)‐nephrosteranic acid and (+)‐roccellaric acid
is presented. The synthetic strategy features the regioselective asymmetric dihydroxylation …

A concise synthesis of paraconic acids:(−)-methylenolactocin and (−)-phaseolinic acid

RA Fernandes, AK Chowdhury - Tetrahedron: Asymmetry, 2011 - Elsevier
A concise synthesis of (−)-methylenolactocin and (−)-phaseolinic acid, the common
members of the paraconic acids, is described. The synthesis is based on regioselective …

Synthesis of β, γ-disubstituted-γ-lactones through a Johnson–Claisen rearrangement: a short route to xylobovide, nor-canadensolide, canadensolide, sporothriolide …

RA Fernandes, AB Ingle, VP Chavan - Tetrahedron: Asymmetry, 2009 - Elsevier
The Johnson–Claisen rearrangement of allyl alcohols with chiral vicinal diol functionality
was employed to access chiral β, γ-disubstituted-γ-lactones in high enantio-and …

A concise and improved synthesis of (+)-eleutherin,(+)-allo-eleutherin and a formal synthesis of (+)-nocardione B

RA Fernandes, VP Chavan, SV Mulay - Tetrahedron: Asymmetry, 2011 - Elsevier
A concise and improved stereoselective synthesis of (+)-eleutherin,(+)-allo-eleutherin and
the formal synthesis of (+)-nocardione B is described. The synthesis is based on a Dötz …