Design, green synthesis and pharmacological evaluation of novel 5,6-diaryl-1,2,4-triazines bearing 3-morpholinoethylamine moiety as potential antithrombotic agents
摘要:
The aim of this research work was to investigate a series of novel 5,6-diaryl-1,2,4-triazines (3a-3q) containing 3-morpholinoethylamine side chain, and to address their antiplatelet activity by in vitro, ex vivo and in vivo methods. All compounds were synthesized by environment benign route and their structures were unambiguously confirmed by spectral data. Compounds (3l) and (3m) were confirmed by their single crystal X-ray structures. Out of all the synthesized compounds, 10 were found to be more potent in vitro than aspirin; six of them were found to be prominent in ex vivo assays and one compound (3d) was found to have the most promising antithrombotic profile in vivo. Moreover, compound (3d) demonstrated less ulcerogenicity in rats as compared to aspirin. The selectivity of the most promising compound (3d) for COX-1 and COX-2 enzymes was determined with the help of molecular docking studies and the results were correlated with the biological activity.
The CC double bondcleavage of enaminones has been realized under ambient conditions through visible‐light catalysis in the presence of Rose Bengal, which leads to the synthesis of a class of 1,2‐diketones without using any metal catalyst. In addition, the one‐pot synthesis of quinoxalines has also been achieved under identical photocatalytic conditions by making use of the in situ generated 1,2‐diketones
Copper/Iodine‐Cocatalyzed C‐C Cleavage of 1,3‐Dicarbonyl Compounds Toward 1,2‐Dicarbonyl Compounds
作者:Li‐Sha Chen、Lu‐Bing Zhang、Yue Tian、Jin‐Heng Li、Yong‐Quan Liu
DOI:10.1002/ejoc.202000795
日期:2020.9.14
DMSO multi‐tasking enabled a copper/I2‐cocatalyzed transformations of 1,3‐dicarbonyl compounds to 1,2‐dicarbonyl compound is depicted. This method is achieved through a sequence of C–C oxidative cleavage and CO release using DMSO as oxidant, oxygen source and solvent, which is general to a wide range of 1,3‐dicarbonyl compounds, including 1,3‐diketones, 1,3‐keto esters and 1,3‐keto amides, with excellent
DMSO多任务处理实现了铜/ I 2催化的1,3-二羰基化合物向1,2-二羰基化合物的转化。该方法是通过使用DMSO作为氧化剂,氧气源和溶剂的一系列C–C氧化裂解和CO释放来实现的,该过程通常适用于各种1,3-二羰基化合物,包括1,3-二酮,1, 3-酮酸酯和1,3-酮酸酯,具有出色的选择性和广泛的官能团耐受性。
Selectfluor-Mediated Simultaneous Cleavage of C–O and C–C Bonds in α,β-Epoxy Ketones Under Transition-Metal-Free Conditions: A Route to 1,2-Diketones
作者:Heng Wang、Shaobo Ren、Jian Zhang、Wei Zhang、Yunkui Liu
DOI:10.1021/acs.joc.5b00857
日期:2015.7.2
Selectfluor-mediated simultaneous cleavage of C–O and C–C bonds in α,β-epoxyketones has been successfully achieved under transition-metal-free conditions. The reaction gives 1,2-diketone compounds in moderate to good yields involving a ring-opening/benzoyl rearrangement/C–C bond cleavage sequence under oxidative conditions.