Photochemical synthesis of 6-substituted 12-oxo-6,12-dihydroazepino[2,1-b]quinazolines
作者:Andrei V. Budruev、Daria Yu. Dzhons、Vladimir I. Faerman、Georgy K. Fukin、Andrey S. Shavyrin
DOI:10.1007/s10593-016-1951-2
日期:2016.9
A method for the synthesis of 6-substituted 12-oxo-6,12-dihydroazepino[2,1-b]quinazolines via a photoinitiated reaction of orthosubstituted arylazides with sodium 2-aminobenzoate is proposed. Stepwise annulation of the quinazoline system to the azepine ring occurs during nucleophilic addition of an amine to a cyclic keteneimine generated by photolysis of an arylazide and subsequent intramolecular
提出了一种通过邻位取代的芳基叠氮化物与2-氨基苯甲酸钠的光引发反应合成6-取代的12-氧代-6,12-二氢氮杂环庚烷[2,1- b ]喹唑啉的方法。在将胺亲核加成至芳族叠氮化物的环状烯酮亚胺的亲核加成过程中,将喹唑啉系统逐步环氧化成氮杂环戊烷,该芳基叠氮化物的光解反应会产生中间体分子间缩合反应。
A Concise Building Block Approachto a Diverse Multi-Arrayed Library of the Circumdatin Family ofNatural Products
作者:Andrew Thomas、Alfred Grieder
DOI:10.1055/s-2003-40870
日期:2003.8
Using a polymer-supported phosphine-mediated intramolecular aza-Wittig reaction in a key step of a reaction sequence a diverse library of benzodiazepine-quinazolinone alkaloids (Circumdatins) has been prepared using a novel modified Eguchi protocol. The multi-arrayed library generation strategy commenced from readily accessible benzodiazepinedione derivatives (and anthranilic acids) and all library members were purified by reverse phase preparative HPLC.
Click chemistry based rapid one-pot synthesis and evaluation for protease inhibition of new tetracyclic triazole fused benzodiazepine derivatives
作者:Debendra K. Mohapatra、Pradip K. Maity、M. Shabab、M.I. Khan
DOI:10.1016/j.bmcl.2009.06.107
日期:2009.9
incorporate a fusion of a proline, 1,2,3-triazole ring with [1,4]-benzodiazepin-8(4H)-one ring systems following click chemistry. The expected peptide bond formation followed by in situ 1,3-dipolar cycloaddition in absence of any catalyst led to the formation of new triazole fused benzodiazepine derivatives.
Reactions of 1-Arylbenziodoxolones with Azide Anion: Experimental and Computational Study of Substituent Effects
作者:Mekhman S. Yusubov、Natalia S. Soldatova、Pavel S. Postnikov、Rashid R. Valiev、Dmitry Y. Svitich、Roza Y. Yusubova、Akira Yoshimura、Thomas Wirth、Viktor V. Zhdankin
DOI:10.1002/ejoc.201701595
日期:2018.2.7
their reactivity with azide anion nucleophile was investigated. It was found that independent on the presence of substituents, all reactions of 1-arylbenziodoxolones proceed as nucleophilic substitution of the iodonium leaving group in the electron-deficient benziodoxolone benzene ring. The presence of bulky substituents in the ortho-position of the aryl ring slowers the reaction, while the presence of
The total synthesis ofrutaecarpine and several analogues has been developed by using an azido reductivecyclization process starting fromsubstituted azido benzoicacids. The intramolecular azido reductivecyclization step was performed with triphenylphosphine or Ni 2 B in HCl―MeOH (1 M) using microwave irradiation. This synthetic route is amenable for the generation of a library of quinazolinone compounds
已经通过使用从取代的叠氮基苯甲酸开始的叠氮基还原环化过程开发了芸香果芸香碱和几种类似物的全合成。分子内叠氮基还原环化步骤使用三苯基膦或 Ni 2 B 在 HCl-MeOH (1 M) 中使用微波辐射进行。该合成路线适用于生成喹唑啉酮化合物库。