Synthesis and Biological Evaluation of 4-Phenoxy-6,7-disubstituted Quinolines Possessing Semicarbazone Scaffolds as Selective c-Met Inhibitors
作者:Baohui Qi、Haiyan Tao、Di Wu、Jinying Bai、Yandan Shi、Ping Gong
DOI:10.1002/ardp.201300087
日期:2013.8
Novel quinoline derivatives bearing acyclic semicarbazones were prepared and their chemical structures as well as the relative stereochemistry were confirmed. All the synthesized compounds were evaluated for their c‐Met kinase inhibitory activity and their cytotoxicity against the cell lines HT‐29, MKN‐45, and MDA‐MB‐231 in vitro. Several potent compounds were further evaluated against A549 cells.
Compounds having the formula
1
are methionine aminopeptidase type 2 (MetAP2) inhibitors and are useful for inhibiting angiogenesis. Also disclosed are MetAP2-inhibiting compositions and methods of inhibiting angiogenesis in a mammal.
In this study, three series of quinazolinone derivativescontaining hydrazone structures were designed and synthesized. Bioactivity assays indicated that these compounds showed good antitumour activities towards human lung cancer cells (A549) and human prostate cancer cells (PC-3) and no apparent toxicity towards those nontumorigenic rat renal tubular epithelial cells (NRK-52E). In particular, compound
Synthesis of 3-(tri/difluoromethyl)-1<i>H</i>-1,2,4-triazol-5(4<i>H</i>)-ones <i>via</i> the cyclization of hydrazinecarboxamides with tri/difluoroacetic anhydride
An efficient method for the synthesis of structurally diverse 4-aryl-3-(tri/difluoromethyl)-1H-1,2,4-triazol-5(4H)-ones through the cyclization of hydrazinecarboxamides with tri/difluoroacetic anhydride is presented. The method is simple and environmentally benign, providing tri/difluoromethylated 1,2,4-triazol-5(4H)-ones in moderate-to-good yields. A mechanism is proposed to proceed via a tandem reaction