Synthesis, characterization, and antiviral activity of novel fluorinated isatin derivatives
作者:Samir Y. Abbas、Awatef A. Farag、Yousry A. Ammar、Abeer A. Atrees、Aly F. Mohamed、Ahmed A. El-Henawy
DOI:10.1007/s00706-013-1034-3
日期:2013.11
5-fluoroisatin with primary amines, hydrazine hydrate, and thiocarbohydrazides. Thiosemicarbazones were prepared by reacting hydrazone derivatives with isothiocyanates. Upon treatment of thiosemicarbazone derivatives with chloroacetone, the thiazole derivatives were obtained. Some of the prepared compounds exhibited antiviral activity. Graphical abstract
Synthesis of New Deoxycholic Acid bis Thiocarbazones under Solvent-Free Conditions using Microwave Irradiation
作者:Zhichuan Shi、Zhigang Zhao、Xingli Liu、Lili Wu
DOI:10.3184/174751911x12995267948561
日期:2011.4
method for the synthesis of new deoxycholic acid bis thiocarbazones undersolvent-freeconditions using microwaveirradiation has been developed. Its main advantages are short reaction times, good conversions and the environmentally friendly nature of the process. Their structures were characterised by 1H NMR, IR, ESI-MS spectra and elemental analysis. The preliminary results indicate that some of these
Synthesis of New Ferrocene bis Thiocarbazones under Solvent-Free Conditions using Microwave
作者:Guohua Li、Zhichuan Shi、Xiaorui Li、Zhigang Zhao
DOI:10.3184/174751911x13043447062703
日期:2011.5
A simple efficient method for the synthesis of new ferrocene bis thiocarbazones via microwave irradiation under solvent-free conditions has been developed. Compared to the conventional method, its major advantages are short reaction times, good conversions and actually accorded the green synthesistechnology. The structures of target compounds were confirmed by 1H NMR, IR, ESI-MS spectra data and elemental
Solvent-free synthesis of novel unsymmetric chenodeoxycholic acid bis thiocarbazone derivatives promoted by microwave irradiation and evaluation of their antibacterial activity
作者:Zhichuan Shi、Zhigang Zhao、Min Liu、Xiaohong Wang
DOI:10.1016/j.crci.2013.05.009
日期:2013.11
Résumé Eleven new non-symmetric chenodeoxycholic acid bis thiocarbazones were efficiently synthesized via the condensation of steroidal diketones (methyl (5β)-3,7-dioxocholan-24-oate) and substituted benzaldehyde thiocarbohydrazones by means of microwave irradiation. Compared with the conventional heating method, the yields were increased from 31–58% to 80–89% and the reaction times were reduced from 420–520 min to 5.0–7.5 min. The structures of these novel compounds were characterized by spectral data and elemental analysis. Four compounds (7a, 7c, 7f and 7g) possess excellent activity against Bacillus subtilis and Staphylococcus aureus.