Trityl Chloride as a Novel and Efficient Organic Catalyst For Room Temperature Preparation of Bis(indolyl)methanes under Solvent-Free Conditions in Neutral Media
various Lewis acids or protic acids has been reported in the literature for the synthesis of bis(indol-3-yl)methanes, 7-27 however, there are only a few reports using neutral organic catalysts for this aim. 4,11,28 The use of organic catalysts instead of inorganic Lewis acids has some advantages including (i) the possibility of using acid-sensitive substrates and (ii) substrates bearing basic functional
Silica-Supported LiHSO<sub>4</sub> as a Highly Efficient, Mild, Heterogeneous, and Reusable Catalytic System for the Solvent-Free Synthesis of Bis(indolyl)methanes
Silica-supported LiHSO4 (LiHSO4/SiO2) is used as a green, cheap, and efficient catalytic system for the synthesis of bis(indolyl)methanes via the condensation of indoles with carbonyl compounds under solvent-free conditions. The reactions proceed rapidly at room temperature, and the title compounds are obtained in high to excellent yields.
作者:Mardia T. El-Sayed、Kazem Mahmoud、Andreas Hilgeroth、Issa M. I. Fakhr
DOI:10.1002/jhet.2402
日期:2016.1
In the present work, we succeeded to synthesize the novel indolo‐spirocyclic compounds (4, 5, 6, 7 and 11) via electrophilic condensation reactions of indoles with carbonyl compounds including different types of ketones, for example, heteroacetyl ketones (3‐acetylindole and 3‐acetylpyridine), cyclohexanone, isatin, cyclohexane‐1,4‐dione, whereas an attempt to prepare the spirocyclic 9 failed. This new idea will open a high prospective for continuous investigations related to the synthesis of novel indolo‐spirocyclic compounds.
ZEE, SHENG-HSU;SU, HSIAO-PING, J. CHIN. CHEM. SOC., 34,(1987) N 2, 135-139
作者:ZEE, SHENG-HSU、SU, HSIAO-PING
DOI:——
日期:——
Synthesis, Anti-Methicillin-resistant S. aureus (MRSA) Evaluation, Quantitative Structure-Activity Relationship and Molecular Modeling Studies of Some Novel Bis-indoles as Prospective MRSA Pyruvate Kinase Inhibitors
作者:Mardia T. El Sayed、Nermien M. Sabry、Nehal A. Hamdy、Andrey Voronkov、Ifedayo V. Ogungbe、Konstantin Balakin、Mohamed S. Abdel-Aziz
DOI:10.2174/1570180815666171213144922
日期:2018.3.12
posed by MRSA. In this work, about 60 compounds of bis-indoles (diindolylmethanes and diindolylmethenes) were synthesized and screened as antibacterialagents against S. aureus and methicillin-resistant S. aureus (MRSA). The quantitative structure-activityrelationships (QSAR) of the compounds were also carried out in this work. Results: Good numbers of the compounds appear to be good antibiotic candidates