53347-40-3Relevant articles and documents
Dioxomolybdenum(VI) complexes of S-methyl-5-bromosalicylidene-N-alkyl substituted thiosemicarbazones: Synthesis, catalase inhibition and antioxidant activities
E?lence, Songül,?ahin, Musa,?zyürek, Mustafa,Apak, Re?at,ülküseven, Bahri
, p. 495 - 502 (2017/10/23)
We synthesized a series of S-methyl-5-bromosalicylidene-N-alkyl substituted thiosemicarbazones and their cis-dioxomolybdenum(VI) complexes having long alkyl chains (propyl, butyl, pentyl, hexyl, and octyl) on thioamide nitrogen. The compounds were characterized by using analytical and spectroscopic methods. The structure of the complex with pentyl group (complex 3) as a representative molecule was determined by X-ray single-crystal diffraction method. The free ligand and their dioxomolybdenum(VI) complexes have been tested for in vitro antioxidant capacity by reduction of copper (II) neocuproine (Cu(II)-Nc) using the CUPRAC (CUPric Reducing Antioxidant Capacity) method. The ligands exhibited more potent in vitro antioxidant capacity than that of the complexes. The obtained trolox equivalent antioxidant capacity (TEAC) value of complex 1 (TEACCUPRAC = 0.73) was higher than those of other complexes. Furthermore, the catalase activity and reactive oxygen species (ROS) scavenging ability of the free ligands and their complexes were determined, showing that complex 1 had significant scavenging activity for ROS.
Mesoionic purinone analogs. 7. In vitro antibacterial activity of mesoionic 1,3,4 thiadiazolo[3,2 a]pyrimidine 5,7 diones
Coburn,Glennon,Chmielewicz
, p. 1025 - 1027 (2007/10/04)
The discovery of in vitro antibacterial activity of mesoionic thiazolo[3,2-αDpyrimidine-5,7-diones and mesoionic 1,3,4-thiadiazolo[3,2-α]pyrimidine-5,7-diones has been recently reported. These compounds are members of a large, virtually unknown, class of mesoionic structures, termed mesoionic purinone analogs, which are isoelectronic and isosteric to the purinones: xanthine, hypoxanthine, or purin-2-one. The formulation, classification, and quantum chemical study of a large number of these heterocyclic structures have been described. A series of alkyl and aryl substituted mesoionic 1,3,4-thiadiazolo[3,2-α]pyrimidine-5,7-diones, mesoionic xanthine analogs, was prepared and examined for antibacterial activity in order to develop structure activity relationships leading to more active derivatives.
