Halogen Substituents as an Effective Modulators of Antibacterial Activity of Substituted 1,2,4-triazole-3-thiones
摘要:
Fourteen novel compounds were obtained and their chemical structures were established by H-1-NMR and IR spectra as well as elemental analyses. As one of the most important factors determining the changes of activity of respective fluorophenyl and iodophenyl derivatives, one should consider the volume of halogen substituent and its influence on the lipophilicity of the entire molecule.
efficient synthesis of some 1,4-disubstituted thiosemicarbazide derivatives is described. The reaction of 3-chlorobenzoic acid hydrazide with various aryl isothiocyanates gave thiosemicarbazide derivatives (1–11) in good yield. The cyclization of compounds (1–11) in the presence of 2% NaOH resulted in the formation of compounds (12–22) containing the 1,2,4-triazole ring. A series of newMannichbases (23–33)
Surface Modified Metal Nano-Particle and Use Thereof
申请人:LEE Sang Joon
公开号:US20120168681A1
公开(公告)日:2012-07-05
The present invention provides a metal nanoparticle that is surface-modified with a hydrophilic or hydrophobic functional group, and a composition for optical detection comprising the same. The surface-modified nanoparticles according to the present invention form clusters suitable for optical detection, for example, suitable as an X-ray contrast agent, and have surface plasmon energy in the visible region, thereby being usefully applied to a variety of optical detection methods.