Iodine-catalyzed synthesis of 5H-phthalazino[1,2-b]quinazoline and isoindolo[2,1-a]quinazoline derivatives via a chemoselective reaction of 2-aminobenzohydrazide and 2-formylbenzoic acid in ionic liquids
作者:Rong-Zhang Jin、Wen-Ting Zhang、Yu-Jing Zhou、Xiang-Shan Wang
DOI:10.1016/j.tetlet.2016.04.101
日期:2016.6
A chemoselective reaction of 2-aminobenzohydrazides and 2-formylbenzoic acid is described for the synthesis of 5H-phthalazino[1,2-b]quinazoline and isoindolo[2,1-a]quinazolinederivatives in ionic liquids catalyzed by iodine. It is found that the type of the products depends on the steric effect in the reactant of 2-aminobenzohydrazides.
2- aminobenzohydrazides和2-甲酰基苯甲酸甲化学选择性反应进行5的合成所述ħ -phthalazino [1,2 b ]喹唑啉和异吲哚基[2,1-一个在由碘催化的离子液体]喹唑啉衍生物。发现产物的类型取决于2-氨基苯并肼的反应物中的空间效应。
Iodine-catalyzed synthesis of fused tetracyclic pyridazino[6,1-b]pyrrolo[1,2-a]quinazolin-9(1H)-one derivatives via a tandem reaction
作者:Wen-Ting Zhang、Wen-Wen Qiang、Chang-Sheng Yao、Xiang-Shan Wang
DOI:10.1016/j.tet.2016.03.018
日期:2016.4
presence of excess NaHCO3 is described. This is a tandem reaction to construct three new rings and a chiral quaternary carbon center in one-pot procedure. Two possible pathways in the formation of the second heterocycle are proposed, and they are confirmed by the key intermediates of pyrrolo[1,2-a]quinazolin-5(1H)-ones which are selectively obtained via controlling the ratio of base.
通过2-氨基苯甲酰肼与1,7-二氯庚烷反应合成哒嗪并[6,1- b ]吡咯并[1,2 - a ]喹唑啉-9(1 H)-一衍生物的简便且通用的方法描述了在过量的NaHCO 3存在下由碘催化的-4--1 。这是一种串联反应,只需一锅法即可构建三个新的环和一个手性季碳中心。提出了形成第二个杂环的两个可能途径,并通过吡咯并[1,2 - a ]喹唑啉-5(1 H)-的关键中间体证实,这些中间体是通过控制碱的比例选择性地获得的。
New Linearly and Angularly Fused Quinazolinones: Synthesis through Gold(I)-Catalyzed Cascade Reactions and Anticancer Activities
作者:Nitin T. Patil、Pediredla G. V. V. Lakshmi、Balasubramanian Sridhar、Sujata Patra、Manika Pal Bhadra、Chitta Ranjan Patra
DOI:10.1002/ejoc.201101822
日期:2012.3
A robust library-based approach to newfused quinazolinones by the development of gold(I)-catalyzedcascadereactions between 2-aminobenzohydrazides and alkynoic acids is documented. Selected compounds were administered to lung (A549) and breast cancer cells (MDA-MB-231 and MCF-7) in vitro and it was found that some successfully inhibited cell proliferation.
Synthèse spécifique de pyrimidines. Formation conccurentielle de pyrimidines et de triazépines
作者:J. Y. Mérour
DOI:10.1002/jhet.5570190634
日期:1982.11
groupement cyanoacétate d'éthyle sous Taction de l'hydrazine ou de la méthylhydrazine pour donner exclusivement des composés de la famille des pyrimidines 3 ou 4. Ces pyrimidines peuvent ětre mono ou diacétylées. Par contre, l'action de Torthoformiate d'éthyle ou de l'orthoacétate d'éthyle sur divers ortho aminohydrazides donne un mélange depyrimidinesetdetriazépines.
Discovery of phthalazino[1,2-b]-quinazolinone derivatives as multi-target HDAC inhibitors for the treatment of hepatocellular carcinoma via activating the p53 signal pathway
deacetylases (HDACs) as a promising target for cancer therapy, a series of phthalazino[1,2-b]-quinazolinone units were hybrided with ortho-aminoanilide or hydroxamic acid to serve as multi-target HDACinhibitors for the treatment of solid tumors. Among the target compounds, 8h possessed nano-molar IC50 values toward the tested cancer cells and HDAC subtypes, which was more potent than the HDACinhibitor SAHA
鉴于组蛋白脱乙酰酶(HDAC)作为癌症治疗的有前景的靶点,一系列二氮杂萘[1,2- b ]-喹唑啉酮单元与邻氨基苯胺或异羟肟酸杂交,作为多靶点HDAC抑制剂用于治疗实体瘤。在目标化合物中, 8h对测试的癌细胞和HDAC亚型具有纳摩尔IC 50值,比HDAC抑制剂SAHA(伏立诺他)更有效。机制研究表明,化合物8h可以通过促进组蛋白3(H3)和α-微管蛋白的乙酰化,并按照设计激活p53信号通路来抑制HepG2细胞增殖。此外,化合物8h在HepG2异种移植肿瘤模型中表现出比SAHA强得多的体内抗肿瘤功效,且毒性可忽略不计。作为一种新型多靶点 HDAC 抑制剂,化合物8h值得进一步开发作为潜在的抗癌药物。