Synthesis and Biological Activities of Some New C-Aminomethylation of 5H-5-Aryl-6,7,8,9-tetrahydrothiazolo[2,3-b]quinazolin-3(2H)-one and 6H-6-Aryl-2,3,7,8,9,10-hexahydrothiazino[2,3-b]quinazolin-4(3H)-one
Abstract A series of new pyrimidine and quinazoline derivatives was synthesized by a Biginelli-like reaction of urea/thiourea, aldehyde, and ketone in the presence of hydrochloric acid as a catalyst. In a similar way, some novel diazatricyclo derivatives were obtained via a Biginelli-like reaction followed by an intramolecular Michael-type addition. The yields of products were reasonable after recrystallization
摘要 以尿素/硫脲、醛、酮为原料,以盐酸为催化剂,通过类Biginelli反应合成了一系列新的嘧啶和喹唑啉衍生物。以类似的方式,通过类 Biginelli 反应和分子内迈克尔型加成获得了一些新的二氮杂三环衍生物。乙醇重结晶后产物收率合理。所有新合成的化合物均使用 IR 和 NMR(1H 和 13C)光谱和元素分析进行表征。研究了这些化合物对金黄色葡萄球菌(RTCC,1885)和大肠杆菌(ATCC,35922)的抗菌活性。补充材料可用于本文。转至出版商的在线版磷、硫、和硅和相关元素查看免费的补充文件。图形概要
Design, Synthesis and Biological Evaluation of Novel Dihydropyrimidine- 2-Thione Derivatives as Potent Antimicrobial Agents: Experimental and Molecular Docking Approach
potential biological activities. Methodology: A series of 3,4-dihydropyrimidine-2(1H)-thione derivatives have been designed and synthesized in a concise way through condensation of variously substituted chalcones with thiourea in alkaline alcoholic solutions. In order to investigate their biological significance, these compounds were tested for their in vitro antimicrobial potential against various bacterial
Highly Chemoselective Multicomponent Biginelli-Type Condensations of Cycloalkanones, Urea or Thiourea and Aldehydes
作者:Yu-lin Zhu、Shen-lin Huang、Yuan-jiang Pan
DOI:10.1002/ejoc.200400845
日期:2005.6
The classical Biginelli reaction is considerably extended by use of cycloalkanones instead of 1,3-dicarbonyl compounds. Use of TMSCl as a Lewis acid allowed one-pot chemoselective multicomponent Biginelli reactions between cycloalkanones, urea or thiourea, and aldehydes. Under similar reaction conditions, thiourea exhibited different behavior to urea, and aliphaticaldehydes showed lower reactivity
Phucho; Nongpiur; Nongrum, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2010, vol. 49, # 3, p. 346 - 350
作者:Phucho、Nongpiur、Nongrum、Nongkhlaw
DOI:——
日期:——
DEVELOPMENT OF NEW MOLECULAR ENTITIES AS POTENT NON-STEROIDAL NON-ACIDIC ANTI-INFLAMMATORY AGENTS - PART-I: SYNTHESIS OF SOME SUBSTITUTED PYRAZOLO-[3, 4-a] THIOZOLO [2', 3'-b] QUINAZOLINES