Chromatography‐Free Multicomponent Synthesis of Thioureas Enabled by Aqueous Solution of Elemental Sulfur
作者:András Gy. Németh、Renáta Szabó、Attila Domján、György M. Keserű、Péter Ábrányi‐Balogh
DOI:10.1002/open.202000250
日期:2021.1
The development of a new three‐component chromatography‐free reaction of isocyanides, amines and elemental sulfur allowed us the straightforward synthesis of thioureas in water. Considering a large pool of organic and inorganic bases, we first optimized the preparation of aqueous polysulfide solution from elemental sulfur. Using polysulfide solution, we were able to omit the otherwise mandatory chromatography
Synthesis and Diuretic Activity of Alkyl- and Arylguanidine Analogs of N,N'-Dicyclohexyl-4-morpholinecarboxamidine in Rats and Dogs
作者:Sam C. Perricone、Stephen J. Humphrey、Louis L. Skaletzky、Boyd E. Graham、Ralph A. Zandt、Gerald R. Zins
DOI:10.1021/jm00048a005
日期:1994.10
nonkaliuretic diuretic in rats. The diuretic profile of 1 and its 1-adamantyl analog (U-37883A, 4) was confirmed orally in dogs, when they were less potent than standard diuretics but showed furosemide-like natriuresis at > or = 100 mumol/kg. However, acute 1 at 61 and 90 mumol/kg iv resulted in lethal cardiac toxicity in dogs. Many analogs of 1 exhibited qualitatively similar diuretic profiles, but
随机筛选确定N,N'-二环己基-4-吗啉羧box(U-18177,1)为大鼠口服有效的非利尿剂利尿剂。在狗中口服1和其1-金刚烷基类似物(U-37883A,4)的利尿特性时,它们的功效不如标准利尿剂,但在>或= 100 mumol / kg时显示了速尿类似的利尿作用。但是,急性1在61和90 mumol / kg iv静脉注射可导致犬致命的心脏毒性。1的许多类似物在质上表现出相似的利尿特性,但没有一个足以保证发育。化合物1还逆转了米诺地尔在犬中的血管舒张作用,这导致了血管相互作用的研究表明,类似物4可能会阻断ATP敏感的K通道。这种钾通道阻滞机制可能有助于该系列的利尿活性。