Facile, Selective, and Regiocontrolled Synthesis of Oxazolines and Oxazoles Mediated by ZnI2 and FeCl3
摘要:
An expedient method for a direct approach to the selective and regiocontrolled synthesis of 2-oxazolines and 2-oxazoles mediated by ZnI2 and FeCl3 is described. A Lewis acid promoted cyclization of acetylenic amide with various functionalities was well tolerated to give 2-oxazolines and 2-oxazoles in good to excellent yields under mild reaction conditions.
Iodine-promoted cyclization of N-propynyl amides and N-allyl amides via sulfonylation and sulfenylation
作者:Gopal Chandru Senadi、Bing-Chun Guo、Wan-Ping Hu、Jeh-Jeng Wang
DOI:10.1039/c6cc05138c
日期:——
Iodine-promoted sulfonylation of N-propynyl amides with sulfonyl hydrazides followed by DBU mediated cyclisation to afford 5-methyl-arylsulfonyloxazoles and oxysulfenylation of N-allyl amides through electrophilic addition of in situ generated sulfenyl iodide...
2-Aminopyrimidine as a novel scaffold for biofilm modulation
作者:Erick A. Lindsey、Roberta J. Worthington、Cristina Alcaraz、Christian Melander
DOI:10.1039/c2ob06871k
日期:——
An efficient synthetic route to a series of substituted 2-aminopyrimidine (2-AP) derivatives has been developed. Subsequent biofilm screening has allowed comparison between the biological activity of these new derivatives and that of the 2-aminoimidazole class of anti-biofilm compounds. Several derivatives displayed the ability to modulate bacterial biofilm formation, exhibiting greater activity against Gram-positive strains than Gram-negative strains. Additionally some 2-aminopyrmidines were able to suppress MRSA resistance to conventional antibiotics.
Facile, Selective, and Regiocontrolled Synthesis of Oxazolines and Oxazoles Mediated by ZnI<sub>2</sub> and FeCl<sub>3</sub>
作者:Gopal Chandru Senadi、Wan-Ping Hu、Jia-Shing Hsiao、Jaya Kishore Vandavasi、Chung-Yu Chen、Jeh-Jeng Wang
DOI:10.1021/ol301980g
日期:2012.9.7
An expedient method for a direct approach to the selective and regiocontrolled synthesis of 2-oxazolines and 2-oxazoles mediated by ZnI2 and FeCl3 is described. A Lewis acid promoted cyclization of acetylenic amide with various functionalities was well tolerated to give 2-oxazolines and 2-oxazoles in good to excellent yields under mild reaction conditions.
The High-Throughput Synthesis and Phase Characterisation of Amphiphiles: A Sweet Case Study
作者:George C. Feast、Oliver E. Hutt、Xavier Mulet、Charlotte E. Conn、Calum J. Drummond、G. Paul Savage
DOI:10.1002/chem.201303514
日期:2014.3.3
A new method for the discovery of amphiphiles by using high‐throughput (HT) methods to synthesise and characterise a library of galactose‐ and glucose‐containing amphiphilic compounds is presented. The copper‐catalysed azide–alkyne cycloaddition (CuAAC) “click” reaction between azide‐tethered simple sugars and alkyne‐substituted hydrophobic tails was employed to synthesise a library of compounds with