The present invention relates to novel substituted indolo[2,3-a]quinolizines and stereoisomeric forms thereof and/or pharmaceutically acceptable salts of these compounds as well as pharmaceutical compositions containing at least one of these substituted indolo[2,3-a]quinolizines together with pharmaceutically acceptable carrier, excipient and/or diluents. Said novel substituted indolo[2,3-a]quinolizines have been identified as useful for the prophylaxis and treatment of cancer by the induction of strong mitotic delays, chromosomal misalignments and mitotic tri- and multipolarization leading to cell cycle stop and apoptosis. Furthermore a synthesis for preparation of the substituted indolo[2,3-a]quinolizines is disclosed in the present invention.
Photoredox Functionalization of 3-Halogenchromones, 3-Formylchromones, and Chromone-3-carboxylic Acids: Routes to 3-Acylchromones
作者:Satenik Mkrtchyan、Viktor O. Iaroshenko
DOI:10.1021/acs.joc.0c00537
日期:2020.6.5
describes a set of new and efficient syntheticroutes toward 3-acyl-substituted chromones ranging from readily available chromone precursors, namely 3-halogenchromones, 3-formylchromones, and chromone-3-carboxylic acids by means of visible-light photoredox catalysis. The operationally simple protocols transform a wide variety of chromone derivatives into challenging 3-acyl-substituted chromones in excellent
One-pot synthesis of novel fused pentacyclic chromenopyrimidobenzimidazolones and benzimidazolyl-chromenyl-substituted thiazolidinones
作者:Nicolaos M. Drosos、Chrisoula Kakoulidou、Marianna Raftopoulou、Julia Stephanidou-Stephanatou、Constantinos A. Tsoleridis、Antonis G. Hatzidimitriou
DOI:10.1016/j.tet.2016.11.022
日期:2017.1
thiazolidinones were also formed through a multicomponent reaction under microwave irradiation involving 3-formylchromones, aminobenzimidazole and 2-mercaptocarboxylic acids. The structural elucidation of the products was accomplished by 1D and 2D NMR experiments and for thiazolidinones was also confirmed by X-ray crystallographic analysis. Full assignment of all 1H and 13C NMR chemical shifts has been unambiguously
超声促进了3-甲酰基色酮与2-氨基苯并咪唑的一锅反应,合成了许多新型的稠合的五环苯并嘧啶并[1,2- α ]苯并咪唑酮。此外,在2-巯基羧酸的微波辐射下,分离出的五环色酮衍生物得到结合了三个药效团杂环的苯并咪唑基-色烯基噻唑烷酮。同样的噻唑烷酮也是在微波辐射下通过多组分反应生成的,涉及3-甲酰基色酮,氨基苯并咪唑和2-巯基羧酸。产物的结构阐明是通过1D和2D NMR实验完成的,噻唑烷酮也通过X射线晶体学分析得到了证实。全部分配1 H和明确实现了13 C NMR化学位移。还讨论了所提出的反应机理。
In(III)-Catalyzed Direct Regioselective Syntheses of 1-Naphthaldehyde Derivatives <i>via</i> a Hidden Aldehyde 1,3-Translocation and Disjointed CO<sub>2</sub> Extrusion
作者:Sabera Sultana、Gisela A. González-Montiel、Samjhana Pradhan、Hari Datta Khanal、Sagar D. Nale、Paul Ha-Yeon Cheong、Yong Rok Lee
DOI:10.1021/acscatal.1c00629
日期:2021.6.4
A highly regioselective annulation of 3-formylchromones with alkynes in the presence of indium triflate leads to the direct construction of diverse 1-naphthaldehyde derivatives. This one-pot de novo protocol features an unusual aldehyde 1,3-translocation and disjointed CO2 extrusion. This methodology is effective for the construction of structurally diverse 1-naphthaldehydes bearing chiral moieties
在三氟甲磺酸铟存在下,3-甲酰基色酮与炔烃的高度区域选择性环化可直接构建多种 1-萘醛衍生物。这种一锅从头协议具有不寻常的醛 1,3-易位和脱节的 CO 2挤出。该方法可有效构建具有手性部分和多芳烃的结构多样的 1-萘醛。这些萘醛可以进一步轻松地加工成各种官能团。密度泛函理论计算表明,这种 In(III) 催化的反应似乎是通过逐步脱芳环化、内酯化、环收缩以及最后排出 CO 2 进行的. 最有趣的是,醛易位不是通过醛的转座而是通过底物芳烃的骨架重排发生。
Lewis Base Catalyzed [4+2] Annulation of Electron-Deficient Chromone-Derived Heterodienes and Acetylenes
Lewis base catalyzed [4+2] annulationreactions between electron‐deficient chromone oxa‐ and azadienes and acetylene carboxylates provide tricyclicbenzopyronesinspired by naturalproducts. An asymmetricsynthesis of the tricyclicbenzopyrones was developed by using modified cinchona alkaloids as enantiodifferentiating Lewis base catalysts.