were confirmed by X-ray crystallography. All obtained compounds were tested for antimicrobial activity against Gram-positive cocci, Gram-negative rods and for antifungal activity. Microbiological evaluation was carried out over 20 standard strains and 30 hospital strains. Compound 6 showed significant inhibition against Gram-positive cocci and had inhibitory effect on the S. aureus topoisomerase IV
Cobalt(II)-Catalyzed Isocyanide Insertion Reaction with Amines under Ultrasonic Conditions: A Divergent Synthesis of Ureas, Thioureas and Azaheterocycles
作者:Tong-Hao Zhu、Xiao-Ping Xu、Jia-Jia Cao、Tian-Qi Wei、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1002/adsc.201300745
日期:2014.2.10
AbstractCobalt(II) acetylacetonate‐catalyzed isocyanide insertion reactions with amines utilizing tert‐butyl hydroperoxide (TBHP) as an oxidant under ultrasound conditions have been developed, which lead to the synthesis of ureas, thioureas, as well as 2‐aminobenzimidazoles, 2‐aminobenzothiazoles, and 2‐aminobenzoxazoles under the general reaction conditions in up to 96% yields, respectively. The intermediate amino methylidyneaminiums, initiated by cobalt(II) acetylacetonate‐catalyzed reactions of isocyanides with amines, could be easily trapped by different nucleophiles such as water, sulfur, and intramolecular nucleophilic functional groups. This method provides a simple, general and practical protocol for the divergent synthesis of ureas, thioureas and azaheterocycles.magnified image
G protein‐coupled receptor binding and pharmacological evaluation of indole‐derived thiourea compounds
binding affinities at the 5‐HT2A and 5‐HT2C receptors, as well as their functional activities at the 5‐HT1A and D2 receptors, were determined. The arylthioureas 1 and 4 were the most active at the 5‐HT1A receptor, showing, at the same time, significant selectivity over the studied 5‐HT2 and D2 receptor subtypes. The compounds were tested for their pharmacological activities within the central nervous system