2-Oxo-Driven N<sub>2</sub> Elimination Induced Decarbonylative Cyclization Reaction in Benzotriazoles to 6-Aminophenanthridines
作者:Satyanarayana Battula、Atul Kumar、Ajai Prakash Gupta、Qazi Naveed Ahmed
DOI:10.1021/acs.orglett.5b02699
日期:2015.11.20
An efficient functional group induced strategy for the synthesis of 6-aminophenanthridines (6AP) has been developed as a result of an in situ generated novel system “CO–CH(N1N2)”. This reaction presents a new mode of N2 extrusion in benzotriazoles that later result in decarbonylative cyclization to 6AP. This method offers an easier protocol for the synthesis of 6AP from readily available inexpensive
由于原位产生的新型系统“ CO-CH(N 1 N 2)”的结果,已开发出一种有效的官能团诱导的6-氨基菲啶(6AP)合成策略。该反应提供了在苯并三唑中N 2挤出的新模式,该新模式随后导致脱羰基环化为6AP。该方法为从容易获得的廉价底物合成6AP提供了更简单的方案。
Synthesis, anti-aggregation, and anti-arrhythmic activity of derivatives of phenanthridine
作者:A. G. Mikhailovskii、T. G. Taranova、B. Ya. Syropyatov、M. I. Vakhrin
DOI:10.1007/bf00767659
日期:1993.11
Antiarrhythmic activity has not been described until the present time in the series of phenanthridine derivatives, but this type of activity is characteristic of amidines [6, 9]. Therefore, interest is presented by the investigation of phenanthridine derivatives having the amidine fragment in the structure. A successful addition to the antiarrhythmic action would be the antiaggregation activity in relation
直到现在,菲啶衍生物系列才描述了抗心律失常活性,但这种类型的活性是脒的特征 [6, 9]。因此,研究在结构中具有脒片段的菲啶衍生物引起了人们的兴趣。抗心律失常作用的成功补充是与血小板相关的抗凝集活性。目前的工作致力于寻找同时结合这两种活性类型的化合物。为了药理筛选,我们完成了化合物(II)-(V)的合成[4, 5]。初始化合物(I)中的氯原子被N-亲核试剂以不同的准备程度取代。与水合肼反应最容易进行;反应产物是脒腙(ID,与甲醛形成醇(HI)。亚氨基氯化物(I)与相应的胺一起沸腾得到脒(IVa-h)。N-烷基脒(Wa,b)与硫酸二甲酯的烷基化得到季脒盐(Va,b)。该反应中环外氮原子甲基化的区域特异性在工作[5]中显示。在碱性介质中盐 (Va, b) 裂解为 6 菲啶酮 (VI) 证实了我们提出的结构。该反应中环外氮原子甲基化的区域特异性在工作[5]中显示。在碱性介质中盐 (Va, b)
Ruthenium-Catalyzed C–H Arylation of Aromatic Acids with <i>ortho</i>-Haloaniline To Access Phenanthridinones
material science; thus, it is highly desirable to develop an efficient and robust method to construct phenanthridinone from readily available starting materials. Herein, we report a Ru-catalyzed C–Harylation of aromatic carboxylic acids with ortho-haloanilines, followed by intramolecular dehydration to afford phenanthridinones in high yields.