Preparation of new 5-aroylamino substituted 3-nicotinoyl/isonicotinoyl-1,3,4-thiadiazol-2(3H)-ones with anti-inflammatory activity
摘要:
A series of 1,3,4-thiadiazol-2(3H)-ones (2a-j) with a nicotinoyl/isonicotinoyl group in position 3 and an aroylamino substituent in position 5 of the ring was prepared and evaluated for antipyretic and anti-inflammatory activities. All the title compounds and in particular 2e, 2i and 2j exhibited anti-inflammatory activity and were devoid of antipyretic properties. (C) 1998 Elsevier Science S.A. All rights reserved.
The asymmetric unit of the title complex, [CdCl2(C14H12N4O2S)(2)](n), consists of one Cd-II ion located on the crystallographic inversion centre, one 4-benzoyl-1-isonicotinoylthiosemicarbazide ligand and one chloride ligand. The central Cd-II ion adopts a distorted octahedral coordination geometry formed by two pyridyl N atoms of two ligands, two S atoms of two other ligands and two chloride ligands. The thiosemicarbazide ligands act as bridges, linking the metal ions into a two-dimensional layered structure parallel to the bc plane. Intermolecular N-H center dot center dot center dot O hydrogen bonds and C-H center dot center dot center dot pi interactions exist between adjacent layers.
Spectral, optical, and cytotoxicity studies on<i>N</i>-(2-isonicotinoylhydrazine-carbonothioyl)benzamide and its metal complexes
作者:Nasser Mohammed Hosny、Heba M. Mahmoud、Mohamed H. Abdel-Rhman
DOI:10.1002/hc.21415
日期:2018.3
AbstractThe ligand N‐(2‐isonicotinoylhydrazine‐carbonothioyl)benzamide (H3L) and its metal complexes with Co(II), Ni(II), Cu(II), and Zn(II) acetates have been synthesized. The synthesized compounds have been characterized by elemental analyses, FT‐IR, UV‐Visible spectra, 1H‐NMR, 13C‐NMR, ESR, MS, effective magnetic moments, molar conductance, and thermal analyses. The free organic ligand exists in the keto form, but in the metal complexes, it forms chelates with the metal ions in the enol form. The measured optical band gap (Eg) values confirmed the presence of direct electronic transition and the semiconductivity of the current compounds. The ligand and its Zn(II) complex were examined as cytotoxic agents against HePG‐2 and HCT‐116 and showed. H3L exhibited strong cytotoxicity, while Zn complex showed moderate activity.
Preparation of new 5-aroylamino substituted 3-nicotinoyl/isonicotinoyl-1,3,4-thiadiazol-2(3H)-ones with anti-inflammatory activity
A series of 1,3,4-thiadiazol-2(3H)-ones (2a-j) with a nicotinoyl/isonicotinoyl group in position 3 and an aroylamino substituent in position 5 of the ring was prepared and evaluated for antipyretic and anti-inflammatory activities. All the title compounds and in particular 2e, 2i and 2j exhibited anti-inflammatory activity and were devoid of antipyretic properties. (C) 1998 Elsevier Science S.A. All rights reserved.
Nine novel acylthioureas were synthesized. Their identities and purities were confirmed by LC‐MS spectra; each structure was elucidated by elemental analysis, IR, 1Н and 13C NMR spectra. Applying an in vitro screening of their antifungal potential, three substances (3, 5, and 6) could be selected as showing high activity against 11 fungi and 3 Phytophthora strains of phytopathogenic significance.