A Metal-Free Reductive N-Alkylation of Indoles with Aldehydes
作者:Nicholas A. Clanton、Taylor E. Spiller、Eliezer Ortiz、Zhinong Gao、Juan Manuel Rodriguez-Poirier、Albert J. DelMonte、Doug E. Frantz
DOI:10.1021/acs.orglett.1c00179
日期:2021.5.7
method has been developed for the reductive N-alkylation of indoles employing aldehydes as the alkylating agent and inexpensive Et3SiH as the reductant. A wide range of aromatic and aliphatic aldehydes are viable substrates along with a variety of substituted indoles. In addition, the method was applied to a one-pot sequential 1,3-alkylation of a substituted indole and successfully demonstrated on a
Synthesis and biological evaluation of novel carbazole-rhodanine conjugates as topoisomerase II inhibitors
作者:Hong Jiang、Wen-Jin Zhang、Peng-Hui Li、Jian Wang、Chang-Zhi Dong、Kun Zhang、Hui-Xiong Chen、Zhi-Yun Du
DOI:10.1016/j.bmcl.2018.03.017
日期:2018.5
In this study, a series of carbazole-rhodanine conjugates was synthesized and evaluated for their Topoisomerase II inhibition potency as well as cytotoxicity against a panel of four humancancercelllines. Among these thirteen compounds, 3a, 3b, 3g, and 3h possessed Topoisomerase II inhibition potency at 20 μM. Mechanism study revealed that these compounds may function as Topo II catalytic inhibitors
HBF
<sub>4</sub>
‐Catalyzed 3,6‐Bis‐diarylmethylation of Carbazoles with
<i>para‐</i>
Quinone Methides
作者:Rekha、Sonam Sharma、Ramasamy Vijaya Anand
DOI:10.1002/ejoc.202201323
日期:2022.12.12
AbstractIn this article, we demonstrate an atom economical, practical, mild and selective HBF4‐catalyzed 1,6‐conjugate addition of carbazoles topara‐Quinone Methides (p‐QMs) to access 3,6‐bis‐diarylmethyl‐ and mono‐diarylmethyl carbazoles. This metal and additive free protocol provides convenient access to the substituted carbazole derivatives in moderate to excellent yields with a good functional group tolerance. It was found that a couple of 3,6‐disubstituted carbazoles showed interesting photophysical properties and, therefore, might potentially find some applications as host materials in OLEDs.
Synthesis of carbazole derivatives containing chalcone analogs as non-intercalative topoisomerase II catalytic inhibitors and apoptosis inducers
Novel topoisomerase II (Topo II) inhibitors have gained considerable interest for the development of anticancer agents. In this study, a series of carbazole derivativescontaining chalcone analogs (CDCAs) were synthesized and investigated for their Topo II inhibition and cytotoxic activities. The results from Topo II mediated DNA relaxation assay showed that CDCAs could significantly inhibit the activity