A large series of chalcones were synthesized and studied for activity against Candida albicans. The SAR analysis showed that the antifungal activity was highly dependent on the substitution pattern of the aryl rings and correlated to a large extent with the ability of compounds to interact with sulfhydryl groups. The most active were the hydroxylated chalcones as their activity related to the location
β-Cyclodextrin in water: highly facile biomimetic one pot deprotection of phenolic THP/MOM/Ac/Ts ethers and concomitant regioselective cyclization of chalcone epoxides and 2′-aminochalcones
作者:Sumit Kumar、Nishant Verma、Naseem Ahmed
DOI:10.1039/c5ra15996b
日期:——
A mild and efficient one-pot deprotection of THP/MOM/Ac/Tsethers and the concomitant cyclization of chalconeepoxides to 2-hydroxyindanones or 2′-aminochalcones to aza-flavanones using β-cyclodextrin in water has been developed. β-CD was found to be highly effective at carrying out the deprotection and sequential transformations in an eco-friendly environment affording moderate to excellent yields
已经开发了在水中使用β-环糊精对THP / MOM / Ac / Ts醚进行温和有效的一锅脱保护以及将查尔酮环氧化物伴随环化为2-羟基茚满酮或2'-氨基查耳酮为氮杂黄酮的过程。发现β-CD在生态友好的环境中进行脱保护和顺序转化非常有效,在60°C下8-22分钟内可提供中等至极好的收率(59-99%)。在该反应中首次使用了水,这是一种生态友好的反应介质。所提出的方案的优点包括高产率和催化剂的可重复使用性,并且该方案排除了金属和有机溶剂的使用。与先前报道的方法相比,本方法温和得多,但更先进。
Chalcone Mannich base derivatives: synthesis, antimalarial activities against <i>Plasmodium knowlesi</i>, and molecular docking analysis
Research on the antimalarial effect of aminoalkyl chalcone derivatives against Plasmodium falciparum and Plasmodium knowlesi has bolstered efforts in drug discovery to combat cases of drug resistance.
We reported the synthesis, antifungal evaluation and study on substituent effects of 21 chalcones. A lot of genetically defined strains belonging to different yeast genera and species, namely Saccharomyces cerevisiae, Hansenula polymorpha and Kluyveromyces lactis, were used as test organisms. Concerning the mode of the antifungal action of chalcones it was shown that DNA was probably not the main target for the chalcones. It was revealed that the yeast's intracellular glutathione and cysteine molecules play significant role as defence barrier against the chalcone action. It was also shown that chalcones may react with some proteins involved in cell separation. (C) 2008 Elsevier Masson SAS. All fights reserved.