Piperidine derivatives: recent advances in synthesis and pharmacological applications

NA Frolov, AN Vereshchagin - International Journal of Molecular Sciences, 2023 - mdpi.com
Piperidines are among the most important synthetic fragments for designing drugs and play
a significant role in the pharmaceutical industry. Their derivatives are present in more than …

Recent Advances in the Synthesis of N-Heterocycles via Lewis acid-Catalyzed/Mediated Cyclization of Propargyl-and Homopropargyl-amines and their Derivatives

BK Behera, P Ghosh, AK Saikia - Tetrahedron, 2024 - Elsevier
Nitrogen-containing heterocycles are among the most significant as they are found in a wide
range of pharmacologically active molecules. Lewis acids are regarded as crucial activation …

Harnessing Gold(I)-Catalyzed Hydroamination/1,3-Sulfonyl Migration Cascade for Divergent Synthesis of Isoxazolidine and Isoxazoline from O-Alkynyl …

SJ Gharpure, DS Raut, J Pal - Organic Letters, 2024 - ACS Publications
Gold-catalyzed 5-exo-dig hydroamination on O-homopropargylic hydroxylamine gave
expeditious access to methylene isoxazolidine. Excess catalyst loading led to facile 1, 3 …

Lewis-Acid-Catalyzed Reductive Hydroalkoxylation of Propargylic N-Hydroxylamines Gives Stereoselective Access to Isoxazolidines

SJ Gharpure, DS Vishwakarma, SA Hajam - Organic Letters, 2023 - ACS Publications
Lewis-acid-catalyzed 5-endo-dig reductive hydroalkoxylation cascade on propargylic N-
hydroxylamine gave expedient, stereoselective access to isoxazolidine derivatives. The …

TMSOTf Mediated Aminocyclization/[1, 3]‐Sulfonyl Migration on N‐Homopropargyl Hydroxylamines for the Stereoselective Synthesis of 3‐Sulfonyl Cyclic Nitrones

S Gharpure, SA Hajam… - Advanced Synthesis & …, 2024 - Wiley Online Library
TMSOTf‐mediated 5‐endo‐dig aminocyclization followed by N‐to C‐[1, 3]‐sulfonyl
migration on N¬‐homopropargyl hydroxylamines gave diastereoselective access to …

Total Synthesis of Pyrrolidine and Piperidine Natural Products via TMSOTf-Mediated “5/6-endo-dig” Reductive Hydroamination of Enynyl Amines

SJ Gharpure, RK Patel, KS Gupta - Organic Letters, 2023 - ACS Publications
Stereoselective syntheses of pyrrolidines and piperidines bearing hydrophobic chains have
been achieved through a metal free, Lewis acid-mediated 5/6-endo-dig reductive …

Synthesis of 3-Azabicyclo[m.2.0] Ring Systems via a Copper-Catalyzed Cascade Reaction of Diazo Compounds with 1,n-Allenynes

M He, N Chen, L Liu, Y Zhu, Q Li, H Li… - The Journal of …, 2020 - ACS Publications
A copper-catalyzed cascade reaction of diazo compounds with 1, n-allenynes (n= 6, 7) was
reported, which provides efficient access to various functionalized 3-azabicyclo [m. 2.0] …

One-pot tandem route to fused indolizidines and quinolizidines: Application in the synthesis of alkaloids and bioactive compounds

Q Song, Y Liu, L Cai, X Cao, S Qian, Z Wang - Chinese Chemical Letters, 2021 - Elsevier
Fused indolizidines and quinolizidines are important skeletons in a variety of natural
products and pharmacologically important compounds. A one-pot tandem route from amide …

Unlocking a reductive hydroalkoxylation cascade for the stereoselective synthesis of cyclic ethers: total synthesis of (±)-isolaurepan and (±)-cis-lauthisan

SJ Gharpure, RK Patel - Chemical Communications, 2024 - pubs.rsc.org
A Lewis acid-mediated, 5/6/7/8-endo-dig reductive hydroalkoxylation cascade on enynols
gives expeditious, diastereoselective access to small and medium ring cyclic ethers with a …

Formal [4+2] Cycloaddition of oAza‐Quinone Methide for the Synthesis of 1,4‐Heterocycle‐Fused Quinolines

SJ Gharpure, SK Nanda… - Advanced Synthesis & …, 2021 - Wiley Online Library
A protocol involving intramolecular formal [4+ 2]‐cycloaddition of in situ generated o‐aza‐
quinone methide for the facile synthesis of 1, 4‐heterocycle‐fused quinoline motifs is …