In-vitro Anti-cancer assay and apoptotic cell pathway of newly synthesized benzoxazole-N-heterocyclic hybrids as potent tyrosine kinase inhibitors
摘要:
A series of benzoxazole-N-heterocyclic hybrids have been synthesized by a one-pot strategy. Molecular docking study revealed that such compounds have the ability to inhibit enzyme protein tyrosine kinase. The findings of this work have been the successful synthesis of benzoxazole scaffolds, featuring hybrids of benzoxazole with quinoline and quinoxaline respectively. The molecular docking studies have showed these compounds to be inhibitors of tyrosine kinase enzyme which triggers growth of cancer cells. The cytotoxicity study of compounds 4a-f showed better potency against breast cancer cell lines MCF-7 and MDA-MB-231 in contrast to oral and lung cancer cell lines KB and A549. The tyrosine kinase activity was measured using Universal Tyrosine Kinase Assay kit using horseradish peroxide (HRP)-conjugated anti-phosphotyrosine kinase solution as a substrate. The compounds 4c exhibited maximum inhibition in the activity of enzyme tyrosine kinase with IC50 value 0.10 +/- 0.16 mu M, than other compounds which were studied and thus proved to be inhibitors of enzyme tyrosine kinase. The selective index of all four compounds was found out to be greater than two, indicating the non-toxic behaviour, i.e. good anti-cancer activity. Further, fluorescence microscopic study helped to characterize the mode of cell death, which was found to be late apoptosis as indicated by the orange fluorescence. The SAR analysis has also been carried out.
Fe/S-Catalyzed synthesis of 2-benzoylbenzoxazoles and 2-quinolylbenzoxazoles <i>via</i> redox condensation of <i>o</i>-nitrophenols with acetophenones and methylquinolines
作者:Le Anh Nguyen、Thi Thu Tram Nguyen、Quoc Anh Ngo、Thanh Binh Nguyen
DOI:10.1039/d1ob00976a
日期:——
An Fe/S catalyst generated in situ from FeCl2·4H2O and elemental sulfur S8 in the presence of a tertiary amine as a base was found to catalyze efficiently a 6e− redox condensation of o-nitrophenols with acetophenones and methylquinolines. The condensed products 2-benzoylbenzoxazoles and 2-quinolylbenzoxazoles were obtained in reasonable yields with water as the only byproduct at a temperature as low
发现在叔胺作为碱存在下由 FeCl 2 ·4H 2 O 和元素硫 S 8原位生成的 Fe/S 催化剂可有效催化邻硝基苯酚与苯乙酮和甲基喹啉的 6e -氧化还原缩合反应。缩合产物 2-苯甲酰基苯并恶唑和 2-喹啉基苯并恶唑在低至 80 °C 的温度下以合理的收率获得,水作为唯一的副产物。
[EN] NOVEL QUINOLINE-CARBAXAMIDES AS JACK3 KINASE MODULATORS<br/>[FR] NOUVEAUX QUINOLEINE-CARBAXAMIDES EN TANT QUE MODULATEURS DE JACK3 KINASE
申请人:ASTRAZENECA AB
公开号:WO2005075429A1
公开(公告)日:2005-08-18
The present invention relates to novel compounds which are JAK3 Kinase inhibitors, methods for their preparation and pharmaceutical compositions comprising them. A compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof, wherein X is -CHOH or -C=O;
An efficient cross-dehydrogenative coupling of quinoline N-oxides and 1,3-azoles has been developed under external oxidant and metal free conditions. The desired products were isolated in good to excellent yields for 26 examples. This methodology provides a practical pathway to biheteroaryls and features high practicality, high efficiency, and environmental friendliness.
Synthesis and investigation of some connected heterocyclic systems
作者:A. L. Gershuns、A. N. Brizitskaya
DOI:10.1007/bf00470275
日期:——
NOVEL QUINOLINE-CARBAXAMIDES AS JACK3 KINASE MODULATORS