Copper(I)-Catalyzed Asymmetric 1,4-Conjugate Hydrophosphination of α,β-Unsaturated Amides
作者:Yan-Bo Li、Hu Tian、Liang Yin
DOI:10.1021/jacs.0c09654
日期:2020.11.25
hydrophosphination of α,β-unsaturated amides is accomplished by virtue of the strong nucleophilicity of copper(I)-PPh2 species, which provides an array of chiral phosphines bearing an amide moiety in high to excellent yields with excellent enantioselectivity. Furthermore, the dynamic kinetic resolution of unsymmetrical diarylphosphines (HPAr1Ar2) is successfully carried out through the copper(I)-catalyzed conjugate
Antileishmanial Activity of Cinnamic Acid Derivatives against Leishmania infantum
作者:Mayara Castro de Morais、Gisele Alves Medeiros、Fernanda Silva Almeida、Juliana da Câmara Rocha、Yunierkis Perez-Castillo、Tatjana de Souza Lima Keesen、Damião Pergentino de Sousa
DOI:10.3390/molecules28062844
日期:——
effects, which justify the efforts to find new antileishmanial drugs. Cinnamic acid derivatives have shown several pharmacological activities, including antiparasitic action. Therefore, in the present study, the biological evaluation of cinnamic acid and thirty-four derivatives against L. infantum is reported. The compounds were prepared by several synthesis methods and characterized by spectroscopic
Three-dimensional aliphatic fused and bridged rings are key pharmacophores in drugs and bioactive natural products. Here, we reported an organocatalytic visible-light induced dearomative cycloaddition of (hetero)arenes, with organic light-emitting diode material 4CzIPN or readily accessible thioxanthone as photocatalyst. A series of cyclobutane-fused polycyclic structures and bridgedbicyclo scaffolds were prepared
Deoxyfluorinated amidation and esterification of carboxylic acid by pyridinesulfonyl fluoride
作者:Anootha Neeliveettil、Soumyadip Dey、Vishnu Nomula、Swati Thakur、Debabrata Giri、Abhishek Santra、Abhijit Sau
DOI:10.1039/d4cc00877d
日期:2024.4.30
Amide bond synthesis is one of the most used reactions in medicinal chemistry. We report an amide bond formation reaction through deoxyfluorinated carboxylic acids under mild conditions using 2-pyridinesulfonyl fluoride. The reaction procedure has been used in a one-pot synthesis of amides and esters via in situ generation of acyl fluoride. This one-pot synthetic method provides easy access to amides
We have achieved an efficient solution-phase parallel synthesis of a library of natural piper-amide-like compounds from the bifunctional beta-phosphono-N-hydroxy-succinimidyl ester intermediate. The primary important feature in our study is the construction of natural-product-like molecules through the adaptation of sophisticated organic reactions that create water-soluble byproducts for a chromatography-free purification. This simple and efficient method rapidly provides a combinatorial library of high yield and purity. The library was evaluated against GPCR targets to demonstrate its potential use as a tool for drug discovery and in chemical biology.