作为早期研究的扩展(J. Med。Chem。1984,27,1431),我们制备了一系列3-取代的5-[((羟基亚氨基)甲基] -1,2,4-恶二唑和相应的5-硫代碳氢氧酸2-(N,N-二烷基氨基)乙基S-酯。在体外评估了该化合物作为磷酸化鳗鱼和人红细胞(RBC)乙酰胆碱酯酶(AChE)的活化剂。就(羟基亚氨基)甲基的解离常数,亲核性,辛醇/缓冲液分配系数,可逆的AChE抑制作用以及重新活化乙基甲基膦酰基化的AChE的动力学来表征化合物。还测试了一种化合物在预防AChE磷酸化中的有效性。所有测试的化合物均能显着活化乙基甲基膦酰化的AChE:3-n-辛基-和3-(1-萘基)-取代的醛肟对被抑制的酶具有反应性(在5-10倍之内),与基准吡啶鎓活化剂2-PAM和HI-6相同。所有取代的硫代碳氢氧酸S酯都是AChE的强大可逆抑制剂:3-n-辛基-和3-(1-萘基)-取代的硫代碳氢氧酸酯在低于5 m
Imidazole hydrochloride as an additive promotes the reaction of amidoximes and DMA derivatives to generated 3,5-disubstituted-1,2,4-oxadiazoles in low to excellent yields without the use of coupling reagents, oxidants, strong acids or bases and other additives.
Efficient Synthesis of Functionalized Indene Derivatives via Rh(III)‐Catalyzed Cascade Reaction between Oxadiazoles and Allylic Alcohols
作者:Jing Zhang、Jun‐Shu Sun、Ying‐Qi Xia、Lin Dong
DOI:10.1002/adsc.201801606
日期:2019.4.23
A highly efficient rhodium(III)‐catalyzedsynthesis of novel functionalized indene derivatives has been achieved via C−H activation/intramolecular aldol condensation. This cascade reaction is an atom economical protocol which could be further applied to build more complexcompounds.
Abstract Abstract Amidoximes (1) reacted with isopropenyl acetate in presence of KSF undermicrowaveirradiation and gave 1,2,4-oxadiazoles (2). 1,2,4-Oxadiazoles (4) can also be obtained by microwaveirradiation from O-acylamidoximes (3) adsorbed on Alumina. 1,3,4-Oxadiazoles (6) were obtained by irradiation of bis (acyl) hydrazines (5) in thionyl chloride.
In accordance with the present invention, compounds that can inhibit viral replication, preferably Hepatitis C Virus (HCV) replication, have been identified, and methods for their use provided. In one aspect of the invention, compounds useful in the treatment or prevention of a viral infection are provided. In another aspect of the invention, compounds useful in the treatment or prevention of HCV infection are provided.