从1-萘基-2-氰基乙酰胺和市售试剂开始,制备了有效且合适的方法,用于合成新型简单且稠合的杂环化合物。1-萘基-2-氰基乙酰胺与磺基乙酸的环缩合提供了苯基噻唑啉酮衍生物。用PhNCS搅拌起始化合物,得到硫代氨基甲酰基衍生物,将其与氯乙酰氯杂环化得到噻唑啉酮衍生物。通过下列温和方法制备5-氨基吡唑衍生物通过回流与水合肼的最后一个硫代氨基甲酰基。讨论了不同的合成方法以获得新型的稠合吡唑并[1,5- a ]嘧啶,4 H-吡唑并[3,4- d] pyrimidin-4-one部分与制备的5-aminopyrazole与a)1、3- dielectrophilic中心(乙酰丙酮,乙酰乙酰苯胺),b)丙二腈的芳基和c)异硫氰酸酯衍生物的反应有关。在酸性介质中冰冻的亚硝酸钠溶液对最后的5-氨基吡唑的作用产生吡唑并[3,4- [ d ] [1,2,3]三嗪。通过不同的光谱数据(IR,MS,1 H和13 C
Synthesis of novel pyrido[2,1-b]benzothiazole and N-substituted 2-pyridylbenzothiazole derivatives showing remarkable fluorescence and biological activities
作者:Rasha A. Azzam、Galal H. Elgemeie、Rokia R. Osman
DOI:10.1016/j.molstruc.2019.127194
日期:2020.2
Abstract The synthesis of novel pyrido[2,1-b]benzothiazole and pyrido[2,1-b]benzoimidazole derivatives was achieved via the reaction of N-aryl-2-cyano-3,3-bis(methylthio)acrylamide with benzothiazoleylacetonitrile and benzoimidazoleylacetonitrile, respectively, while N-substituted 2-pyridylbenzothiazole derivatives were synthesized by reacting 2-(benzo[d]thiazol-2-yl)-3-(dimethylamino)acrylonitrile
1-Naphthyl-2-cyanoacetamide in heterocyclic synthesis: synthesis and evaluation of the antimicrobial activity of some new pyridine, pyrimidine, and naphtho[2,1-b]oxazine derivatives
作者:Ahmed A. Fadda、Ramy Rabie、Hassan A. Etman、Abdel-Aziz S. Fouda
DOI:10.1007/s11164-014-1864-6
日期:2015.10
1-Naphthyl-2-cyanoacetamide 1 reacts with arylidene malononitrile to afford a novel 2-oxo-1,2-dihydropyridine-3,5-dicarbonitrile derivative 6 . Heating of 1 under reflux with the 1,3-diketones acetylacetone and benzoylacetone furnished the corresponding 3-cyano-2-pyridones derivatives 7 and 8 , respectively. Fusion of 1 with 2 mol malononitrile afforded pyridinylacetamide 9 . Condensation of 1 with nitrosonaphthols
Nucleic acid components and their analogs: Design and synthesis of novel cytosine thioglycoside analogs
作者:Galal H. Elgemeie、Ali M. Salah、Nermeen S. Abbas、Hoda A. Hussein、Reham A. Mohamed
DOI:10.1080/15257770.2016.1231318
日期:2017.2
The synthesis of a new category of novel cytosine 4-thioglycoside analogs has been first accomplished. The main step of this strategy is the synthesis of sodium pyrimidine-4-thiolate through the condensation of 2-cyano-N-arylacetamides with sodium cyanocarbonimidodithioate, followed by coupling with α-bromo-sugars to afford the corresponding cytosine 4-thioglycoside analogs. The free thioglycosides
Aminoisoxazole derivatives active as kinase inhibitors
申请人:Cavicchioli Marcello
公开号:US20050059657A1
公开(公告)日:2005-03-17
Compounds (I) which are aminoisoxazole derivatives or pharmaceutically acceptable salts thereof, together with pharmaceutical compositions comprising them are disclosed; these compounds or compositions are useful in the treatment of diseases caused by and/or associated with an altered protein kinase activity such as cancer, cell proliferative disorders, Alzheimer's disease, viral infections, auto-immune diseases and neurodegenerative disorders.
A facile and convenient anion cascade strategy was developed for the synthesis of bridged-ring amides in moderate to excellent yields in one step in the presence of tBuOK in EtOH undermildconditions, starting from various cheap and commercially available 2-cyanoacetamides and precisely designed straight-chain and annular 1,4-dienones. This simple protocol was generally applicable to a wide range