Synthesis and Reactivity of 3‐oxoprop‐1‐en‐1‐olate Derivative as a Building Block for the Synthesis of Azole and Azine Derivatives
作者:Mohamed A. Khalil、Mohamed A. Raslan、Samia M. Sayed
DOI:10.1002/jhet.2775
日期:2017.5
as 7‐substituted pyrazolo[1,5‐a]pyrimidine (5a–e) derivatives have been synthesized by the reactions of the versatile unreported sodium 3‐(4‐methyl‐2‐(4‐methylphenylsulfonamido)thiazol‐5‐yl)‐3‐oxoprop‐1‐en‐1‐olate (2) with amino heterocyclic (3a–e) derivatives. Reaction of (2) with hydrazonyl halide (7a–d) and hydroximoyl chloride (11a,b) derivatives followed by reaction with hydrazine hydrate afforded
几种新的杂环化合物,例如7-取代的吡唑并[1,5- a ]嘧啶(5a-e)衍生物是通过未报道的通用3-(4-甲基-2-(4-甲基苯基磺酰胺基)噻唑钠的反应合成的带有氨基杂环(3a-e)衍生物的(-5-基)-3-氧代丙-1-烯-1-油酸酯(2)。的反应(2)与腙基囟(图7a-d )和肟基氯化物(11A,B)的衍生物,随后反应用水合肼,得到吡唑并[3,4- d ]哒嗪和异恶唑并[3,4- d已经描述了分别掺入噻唑部分的]哒嗪衍生物。考虑到元素分析和光谱分析的数据,阐明了所有新合成的化合物。
Synthesis and anti-tumor activities of some new pyridines and pyrazolo[1,5-a]pyrimidines
作者:Osama M. Ahmed、Mahmoud A. Mohamed、Rasha R. Ahmed、Sayed A. Ahmed
DOI:10.1016/j.ejmech.2009.03.042
日期:2009.9
cyanoacetamide, cyanothioacetamide and 3-aminopyrazols with sodium salt of 3-hydroxy-1-(2-naphthyl)prop-2-en-1-one gives pyridin-2-one, pyridin-2(1H)-thione, and pyrazolo[1,5-a]pyrimidine derivatives. These derivatives showed potent anti-tumor cytotoxic activity in vitro using different human cancer cell lines.
氰基乙酰胺,氰基硫代乙酰胺和3-氨基吡唑与3-羟基-1-(2-萘基)丙-2-烯-1-酮的钠盐进行环缩合可得到吡啶-2-酮,吡啶-2(1 H)-硫酮,和吡唑并[1,5- a ]嘧啶衍生物。这些衍生物在体外使用不同的人类癌细胞系显示出有效的抗肿瘤细胞毒活性。
Potassium 2‐Cyanoethylene‐1‐thiolate Derivatives: A New Preparative Route to 2‐Cyanoketene <i>S</i>,<i>N</i>‐Acetals and Pyrazole Derivatives
作者:Galal H. Elgemeie、Ahmed H. Elghandour、Ghada W. Abd Elaziz
DOI:10.1081/scc-200030549
日期:2004.1.1
Abstract The novelketene S,N‐acetals 4a–e were readily prepared by the reaction of substituted cyanoacetanilides with phenylisothiocyanate in the presence of potassium hydroxide, followed by alkylation of the produced salts with methyl iodide. The reaction of compounds 4 with hydrazines afforded different substituted pyrazoles.
A Direct Route to a New Class of Acrylamide Thioglycosides
作者:Galal H. Elgemeie、Wafaa A. Zaghary、Kamelia M. Amin、Tamer M. Nasr
DOI:10.1080/07328300802262786
日期:2008.8
The preparation of a new class of acrylamide thioglycosides via one-pot reaction of the potassium 2-cyanoethylene-1-thiolate salts with 2,3,4,6-tetra-O-acetyl--D-gluco- and galactopyranosyl bromides has been studied. The E-configuration of these thioglycosides was proven by their transformations to the corresponding 5-aminopyrazoles.
BRAEUNIGER, H.;PESEKE, K.;BAUCH, M.;ROHDE, M.;TECH, B., WISS. Z. WILHELM-PIECK-UNIV. ROSTOCK. NATURWISS. R., 1984, 33, N 8, 53-56
作者:BRAEUNIGER, H.、PESEKE, K.、BAUCH, M.、ROHDE, M.、TECH, B.