Toward protein encapsulation by a synthetic host, we synthesized an ubiquitin-dangled ligand, a potential precursor of a nanoscale coordination cage. The key step is the addition of a C-terminal Cys76 SH group, which was introduced by Gly76Cys mutation, to a maleimide acceptor on the ligand. The C-terminal mutation and the SH addition to the ligand did not damage the ubiquitin moiety at all, neither structurally nor conformationally.
The palladium‐catalyzed C−H oxidation of simple arenes is an attractive strategy to obtain phenols, which have many applications in the fine chemicals industry. Although some advances have been made in this research area, low reactivity and selectivity are, in general, observed. This report describes a new catalytic system for the efficient C−H acetoxylation of simple arenes based on Pd(OAc)2 and a
Abstract Esterification of several types of mono- and disubstituted phenols with various mono- and dialkanoyl chlorides was performed in phase-transfer catalysis conditions, using tetrabutylammonium chloride in a mixture of aqueous NaOH and dichloromethane. The process is particularly efficient (almost quantitative yields) as well as rapid (only 5 min reaction time, at a temperature of 0 °C). GRAPHICAL
摘要 在相转移催化条件下,使用四丁基氯化铵和 NaOH 水溶液和二氯甲烷的混合物,对几种类型的单和二取代酚与各种单和二烷酰氯进行酯化反应。该过程特别有效(几乎是定量的产率)和快速(仅 5 分钟反应时间,在 0 °C 的温度下)。图形概要
Antioxidant Building Blocks I. The Unexpected C-Acetylation of 2,6-Di-tert-butylphenol with Isopropenyl Acetate
作者:Tibor Gizur、György G. Ferenczy、Éva Ágai-Csongor、György Domány
DOI:10.1135/cccc19961244
日期:——
While the reaction of some 2-substituted and 2,6-disubstituted phenols with isopropenyl acetate resulted in the corresponding phenol acetates, in the reaction of 2,6-di-tert-butylphenol, a useful starting material of antioxidant building blocks, under the same conditions 4-acetyl-2,6-di- tert-butylphenol was the only product.
[EN] COMPOUND FOR TREATING GOUT OR HYPERURICEMIA<br/>[FR] COMPOSÉ POUR LE TRAITEMENT DE LA GOUTTE OU DE L'HYPERURICÉMIE
申请人:ARTHROSI THERAPEUTICS INC
公开号:WO2020232156A1
公开(公告)日:2020-11-19
Described herein is (3,5-dibromo-4-hydroxyphenyl)(6-hydroxy-2-(1-hydroxyethyl)benzofuran-3-yl-4,5,7-d 3 )methanone, or a pharmaceutically acceptable salt or solvate thereof, and methods for treating or preventing gout or hyperuricemia comprising the administration of the compound.