A convenient synthesis of novel 5-aryl-pyrido[2,3-d]pyrimidines and screening of their preliminary antibacterial properties
摘要:
Exploiting the diene nature of 6[1-aza-2-(dimethylamino)prop-l-enyl]-1,3-dimethyluracil (2), novel 5-aryl-pyrido[2,3-d]pyrimidines (5a-h) have been synthesized. The reaction proceeds through a triene intermediate whose structure has been conclusively established by single crystal X-ray analysis. Role of water is intriguing as the reaction can be stopped at the intermediate stage. Synthesized compounds have been screened for possible antibacterial properties and results showed modest activity. (C) 2014 Elsevier Ltd. All rights reserved.
A convenient synthesis of novel 5-aryl-pyrido[2,3-d]pyrimidines and screening of their preliminary antibacterial properties
摘要:
Exploiting the diene nature of 6[1-aza-2-(dimethylamino)prop-l-enyl]-1,3-dimethyluracil (2), novel 5-aryl-pyrido[2,3-d]pyrimidines (5a-h) have been synthesized. The reaction proceeds through a triene intermediate whose structure has been conclusively established by single crystal X-ray analysis. Role of water is intriguing as the reaction can be stopped at the intermediate stage. Synthesized compounds have been screened for possible antibacterial properties and results showed modest activity. (C) 2014 Elsevier Ltd. All rights reserved.
KI-VO(acac)<sub>2</sub>-H<sub>2</sub>O<sub>2</sub>-AcOH, A New Iodinating System for Selective Iodination at C-5 Position of Activated Pyrimidinediones: A Combined Experimental and Density Functional Study
作者:Lakhinath Saikia、Dhrubajyoti Talukdar、Ramesh C. Deka、Ashim J. Thakur
DOI:10.1002/jhet.1575
日期:2013.7
KI‐VO(acac)2‐H2O2 in aqueous ethanolic medium with acetic acid as additive has been found to iodinatepyrimidinediones and aromatic amines. The methodology is mild, efficient, and environmentally benign. Densityfunctional theory‐based reactivity parameters support the experimentally observed reactivity of pyrimidinedione derivatives.
已发现在含水乙醇介质中以乙酸为添加剂的KI-VO(acac)2 -H 2 O 2可碘化嘧啶二酮和芳族胺。该方法是温和的,有效的且对环境无害的。基于密度泛函理论的反应性参数支持嘧啶二酮衍生物的实验观察到的反应性。