最近鉴定慢性糖尿病并发症的治疗方法的努力导致发现了一系列新型的高效和选择性的3-[((苯并噻唑-2-基)甲基]吲哚-N-链烷酸醛糖还原酶抑制剂。主要候选化合物3-[((4,5,7-三氟苯并噻唑-2-基)甲基]吲哚-N-乙酸(利多司他,9)抑制醛糖还原酶,IC(50)为5 nM,是5400倍对醛还原酶的活性较低,醛还原酶是一种与活性醛解毒有关的酶。在为期5天的STZ诱导的糖尿病大鼠模型中,它可降低神经和晶状体山梨糖醇的水平,ED(50)分别为1.9和4.5 mg / kg / d po。在3个月的糖尿病干预模型中(糖尿病1个月,随后2个月以5 mg / kg / d po进行药物治疗),相对于糖尿病对照,它可以使多元醇正常化,并减少运动神经传导速度不足59%。它具有良好的药代动力学特征(F,82%; t(1/2),5.6 h; Vd,0.694 L / kg),并且在目标组织中的良好药物渗透
There are disclosed compounds that modulate or inhibit the enzymatic activity of indoleamine 2,3-dioxygenase (IDO), pharmaceutical compositions containing said compounds and methods of treating proliferative disorders, such as cancer, viral infections and/or inflammatory disorders utilizing the compounds of the invention.
N-Fluoropyridinium salts provide a new system of fluorinatingagents by which a wide range of nucleophilic substrates differing in reactivity can be fluorinated due to the varying degree of fluorinating power and also fluorinated very selectively through structural alteration. The scope of selective fluorination should be broadened considerably on the basis of the present results. The N-fluoropyridinium
Chemoselective Acylation of Amines in Aqueous Media
作者:Sarala Naik、Gitalee Bhattacharjya、Bandana Talukdar、Bhisma K. Patel
DOI:10.1002/ejoc.200300620
日期:2004.3
Amines are efficiently acylated by both cyclic and acyclic anhydrides by dissolving them in an aqueous medium with the help of a surfactant, sodium dodecyl sulfate (SDS). Cyclic and acyclic anhydrides react with equal ease with an amine, and amines with various stereo-electronic factors react at the same rates with an anhydride. Chemoselectiveacylation of amines in the presence of phenols and thiols
Efficient Heterogeneous Gold(I)-Catalyzed Direct C(<i>sp</i>
<sup>2</sup>
)-C(<i>sp</i>
) Bond Functionalization of Arylalkynes through a Nitrogenation Process to Amides
作者:Quan Nie、Feiyan Yi、Bin Huang、Mingzhong Cai
DOI:10.1002/adsc.201700783
日期:2017.11.23
heterogeneous gold(I)-catalyzed direct C(sp2)–C(sp) bond functionalization of arylalkynes through a nitrogenation process to amides has been achieved by using an ordered mesoporous silica (MCM-41)-immobilized phosphine gold(I) complex [MCM-41-PPh3-AuCl] as catalyst and silver carbonate (Ag2CO3) as cocatalyst with trimethylsilyl azide (TMSN3) as a nitrogen source, yielding a variety of amides in moderate to
通过使用有序介孔二氧化硅(MCM-41)固定化的磷化膦金(I),实现了第一个非均相金(I)催化的芳族炔烃通过酰胺的氮化过程直接C(sp 2)–C(sp)键的官能化)络合物[MCM-41-PPh 3 -AuCl]作为催化剂,碳酸银(Ag 2 CO 3)作为助催化剂,叠氮化三甲基硅烷基酯(TMSN 3)作为氮源,在温和条件下可产生中等至优异收率的各种酰胺。这种异质的膦金(I)络合物显示出与均相的氯(三苯基膦)金(I)相同的营业额(Ph 3PAuCl)并可以通过简单过滤反应溶液而容易地回收,并循环至少八次而没有明显的活性损失,为从炔烃合成酰胺提供了一种新颖,有效,实用和经济的方法。
Synthesis, characterization, and antimicrobial activities of clubbed [1,2,4]-oxadiazoles with fluorobenzimidazoles
作者:Ganesh R. Jadhav、Mohammad U. Shaikh、Rajesh P. Kale、Anand R. Ghawalkar、Charansingh H. Gill
DOI:10.1002/jhet.177
日期:2009.9
In this study, a novel series of substituted 4,6-difluoro-2-2-[3-(substituted-phenyl)-[1,2,4]-oxadiazol-5-yl]-ethyl}-1H-benzo[d]imidazole derivatives were synthesized by condensation of 2,4-difluoro 6-nitrophenyl amine with 3-(substitutedphenyl-[1,2,4]-oxadiazol-5yl) propionic acid by using 2,4,6-trichlorobenzoyl chloride in the presence of triethyl amine base. The compounds were evaluated for their