Proline-catalyzed asymmetric α-amination in the synthesis of bioactive molecules

P Kumar, BM Sharma - Synlett, 2018 - thieme-connect.com
The direct α-amination of carbonyl compounds using organocatalysts represents a powerful
and atom-economical tool for asymmetric C–N bond formation. We describe a complete …

Stereoselective Synthetic Routes to Iminosugars: A Divergent Approach Utilizing a Common Multifunctional Chiral Scaffold

S Pashikanti, A Datta - Synthesis, 2025 - thieme-connect.com
Starting from an l-serine-derived multifunctional aminobutenolide as a common chiral
building block, stereoselective synthetic routes to representative examples of di-, tri-, and …

Asymmetric synthesis of six tetrahydroisoquinoline natural products through α-amination of an aldehyde

A Ansari, AB Gorde, R Ramapanicker - Tetrahedron, 2021 - Elsevier
An enantioselective route towards the synthesis of C-1 substituted tetrahydroisoquinoline
natural products is reported. Six different natural products are synthesized from a single …

Synthesis of enantiomeric polyhydroxyalkylpyrrolidines from 1, 3-dipolar cycloadducts. Evaluation as inhibitors of a β-galactofuranosidase

GA Oliveira Udry, E Repetto, DR Vega… - The Journal of Organic …, 2016 - ACS Publications
Enantiomeric 2, 3, 4-tris (hydroxyalkyl)-5-phenylpyrrolidines have been synthesized from the
major cycloadducts obtained by the 1, 3-dipolar cycloaddition of sugar enones with …

Enantioselective Synthesis of (R)‐Antofine and (R)‐Cryptopleurine

A Ansari, R Ramapanicker - ChemistrySelect, 2018 - Wiley Online Library
Enantioselective syntheses of (R)‐antofine and (R)‐cryptopleurine starting from a 3‐
phenanthrenylpropanal derivative are reported. Asymmetric α‐amination of this aldehyde is …

[HTML][HTML] Exploring endoperoxides as a new entry for the synthesis of branched azasugars

S Domeyer, M Bjerregaard… - Beilstein Journal of …, 2017 - beilstein-journals.org
A new class of nitrogen-containing endoperoxides were synthesised by a photochemical [4+
2]-cycloaddition between a diene and singlet oxygen. The endoperoxides were …

Seven-membered rings

AG Meyer, JA Smith, C Hyland, CC Williams… - Progress in Heterocyclic …, 2016 - Elsevier
This chapter aims to provide an overview of the key synthetic methods, reactions, and
applications reported in 2015 in the area of seven-membered heterocyclic compounds. Most …

Diastereoselective synthesis of furanose and pyranose substituted glycine and alanine derivatives via proline-catalyzed asymmetric α-amination of aldehydes

R Petakamsetty, A Ansari, R Ramapanicker - Carbohydrate Research, 2016 - Elsevier
A concise organocatalytic route toward the synthesis of furanose and pyranose substituted
glycine and alanine derivatives is reported. These compounds are core structural units of …

Diversity-Oriented Synthesis of cis-3, 4-Dihydroxylated Piperidine and Its Higher Saturated and Unsaturated Homologues from d-Ribose and Their Glycosidase …

S Ajay, I Arora, P Saidhareddy, AK Shaw - Synlett, 2016 - thieme-connect.com
The synthesis of six-, seven-, and eight-membered cis-dihydroxy azacycles has been
accomplished from d-ribose using Vasella reductive amination as a key step and utilization …

Stereoselective Synthesis of Hydroxy Diamino Acid Derivatives and the Caprolactam Unit of Bengamide A through Organocatalytic α‐Hydroxylation and Reductive …

AT Philip, E Raju… - European Journal of …, 2016 - Wiley Online Library
The synthetic utility of proline‐catalyzed asymmetric α‐hydroxylation and subsequent
reductive amination of aldehydes to afford chiral β‐amino alcohols is explored for the first …