摘要:本文研究了1,3-二羰基化合物、取代靛红和2-氨基-1-丙烯基-1,1,3-三甲腈的多组分串联反应,在微波辐射下高效合成了一系列用途广泛的、具有潜在生物活性的吡咯螺吖啶类化合物。此反应经历连续的Knoevenagel缩合、Michael加成、分子内环化、吡咯-2-酮开环和再环化等过程,实现了取代靛红的开环。该方法具有反应时间短、操作简便、产物易于分离提纯、产率高等优点。34348 毕业论文关键词:多组分串联反应;微波辐射;吖啶衍生物
Microwave-assisted Synthesis of Pyrrole-spiro Acridines with Potential Biological Activity
Abstract: A multi-component domino reaction of 1,3-dicarbonyls with substituted isatins and 2-aminoprop-1-ene-1,1,3-tricarbonitrile was developed under microwave irradiation, efficiently providing a series of acridine derivatives with potential biological activity. This reaction underwent cascades process involved Knoevenagel condensation, Michael addition, intramolecular cyclization, and ring-open of pyrrolidin-2-ones as well as second cyclization, in which the transannulation of isatins was realized. This method has many advantages including short reaction times, simple operation, easy product separation and purification.
Keywords: multi-component domino reaction; microwave heating; acridines
1 前言
1. 1 选题的依据和意义
吖啶类化合物是一类含氮有机杂环化合物,且拥有一个较大的共轭体系,具有很强的刚性平面结构,荧光性很强[1-2],是一类良好的荧光试剂。另外,吖啶可以很好地嵌入到DNA双螺旋中[3],在抗肿瘤[4]、抗菌[5]、抗血吸虫[6]等方面都表现出了很强的生物活性。如,从煤焦油中提炼出来的吖啶黄不仅是常见的染料,还具有较强的抗菌能力。许多天然存在的生物碱中也都存在吖啶骨架,其中具有代表性的有Stellettamine[7]、Cyclodercitin[7-8]和Plakinidines[9](图1),它们都表现出了广泛的生物活性。
图1 含吖啶骨架的天然生物碱
图2 具有生物活性的吖啶衍生物的结构