Weakly Coordinating, Ketone-Directed (η<sup>5</sup>
-Pentamethylcyclopentadienyl)cobalt(III)- and (η<sup>5</sup>
-Pentamethylcyclopentadienyl)rhodium(III)-Catalyzed C−H Amidation of Arenes: A Route to Acridone Alkaloids
作者:Sourav Sekhar Bera、Md Raja Sk、Modhu Sudan Maji
DOI:10.1002/chem.201805376
日期:2019.2.1
monoamidation of aromatic ketones, chalcone, carbazole, and benzophenones was achieved by employing high‐valent cobalt and rhodium catalysis to access numerous biologically important molecular building blocks. This amidation proceeded smoothly with a variety of ketones and several amidating partners. The application of the products in the synthesis of various heterocycles, including acridones, indoles, quinoline
[EN] A PROCESS FOR THE PREPARATION OF THE CORE STRUCTURE IN QUINOLONE AND NAPTHYRIDONE CLASS OF ANTIBIOTICS<br/>[FR] PROCÉDÉ DE PRÉPARATION DE LA STRUCTURE CENTRALE D'ANTIBIOTIQUES APPARTENANT AUX CLASSES QUINOLONE ET NAPHTHYRIDONE
申请人:INDIAN INST TECHNOLOGY MADRAS
公开号:WO2013157018A1
公开(公告)日:2013-10-24
This invention relates to quinolone- and naphthyridone derivatives represented by the general formula VII, and a process for their preparation using Baylis-Hillman adducts from substituted aromatic or hetero-aromatic aldehydes and amines of interest as the starting materials. After the tandem Aza-Michael addition and SNAr cyclization, the resulting 4-hydroxy-1,2,3,4-tetrahydroquinoline or 4-hydroxy-1, 2,3,4- tetrahydro-1,8-naphthyridine derivative was subjected to oxidation to get the quinolone or naphthyridone skeleton in one step in good to excellent yields.
Antimitotic Activity of 5-Hydroxy-7-methoxy-2-phenyl-4-quinolones
作者:Mohamed Hadjeri、Eva-Laure Peiller、Chantal Beney、Nabajyoti Deka、Martin A. Lawson、Charles Dumontet、Ahcène Boumendjel
DOI:10.1021/jm049876x
日期:2004.9.1
We report the synthesis of 5-hydroxy-7-methoxy-2-phenyl-4-quinolones and their biological activity as antitumor agents. These molecules were initially evaluated for their ability to induce cell cycle arrest in the G2/M phase. Compounds that showed significant G2/M cell cycle arrest were tested for antiproliferative activity using both the MTT assay and the NCI in vitro 60 cell line human tumor screen. The 5-hydroxy-7-methoxy-2-phenyl-4-quinolone (3a) and 2-(3-fluorophenyl)-5-hydroxy-7-methoxy-4-quinolone (3f) were the most active in the cell cycle arrest test whereas 3f was found to be the most active in the MTT assay. In terms of structural requirements, we found that the presence of a 5-hydroxyl group, a 7-methoxy group, and an unsubstituted N1 were essential for the antimitotic activity. In accordance with the literature, a fluoro group at the 3'- or 2'-position and a methoxy or a chloro group at the 3'-position were found to be highly advantageous for both the cell cycle arrest and the antiproliferative activities.