A general approach to intermolecular carbonylation of arene C–H bonds to ketones through catalytic aroyl triflate formation
作者:R. Garrison Kinney、Jevgenijs Tjutrins、Gerardo M. Torres、Nina Jiabao Liu、Omkar Kulkarni、Bruce A. Arndtsen
DOI:10.1038/nchem.2903
日期:2018.2.1
C–H bonds has become a dominant research theme in the past decade as an approach to efficient synthesis. However, the incorporation of carbon monoxide into such reactions to form valuable ketones has to date proved a challenge, despite its potential as a straightforward and green alternative to Friedel–Craftsreactions. Here we describe a new approach to palladium-catalysed C–H bond functionalization
It was synthesized nine polyoxygenated chalcones with a potential and safe use as antioxidant, antimicrobial and anti-inflammatory therapies. Chalcones obtained by Claisen-Schmidt condensation were studied as antioxidant, inhibitors of human 5-lipoxygenase, antifungal, antibacterial and antibiotic resistance modifiers. Two chalcones with catecholic moieties were able to strongly decrease the minimum inhibitory concentration (MIC) of methicillin against methicillin-resistant Staphylococcus aureus, increase the antiradical activity and significantly inhibit the human 5-lipoxygenase. Only one of these chalcones was active synergistically with methicillin. Chalcones with methoxyl substituents at different positions displayed the best activities against Cryptococcus neoformans. Only one chalcone showed good activity against the plant pathogenic bacteria Pseudomonas syringae whose half maximal inhibitory concentration (IC50) value (2.5 mu g mL(-1)) was similar to that observed with the antibiotic streptomycin (2.9 mu g mL(-1)). These simple chalcones have safe potential uses in antioxidant, antimicrobial and anti-inflammatory therapies.
Ramana, M. M. V.; Kudav, N. A., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1988, vol. 27, # 1-12, p. 339 - 341
作者:Ramana, M. M. V.、Kudav, N. A.
DOI:——
日期:——
Simonis; Danischewski, Chemische Berichte, 1926, vol. 59, p. 2918