the reference drugs some compounds showed comparable or higher activities. In contrast to results of the previous studies, some 5-chloro derivatives showed lower or comparable activities against some tested microorganism, in comparison with analogues without C-5 substitution. In general, most of the compounds bearing electron withdrawing group at 4-position of the phenyl ring were more active against
Synthesis and antibacterial activity of isothiazolyl oxazolidinones and analogous 3(2H)-isothiazolones
作者:Neda Adibpour、Ali Khalaj、Saeed Rajabalian
DOI:10.1016/j.ejmech.2009.09.019
日期:2010.1
The synthesis and antibacterial activity of several new 5-((3-oxoisothiazol-2(3H)-yl)methyl)-3-phenyloxazolidin-2-ones 8 and analogous 2-(4-substituted phenyl)-3(2H)-isothiazolones 3 and 4 substituted at 4 and/or 3-positions of the phenyl moiety with different groups of which some have shown to increase the antibacterial activity of both 3-aryl-2-oxazolidinones and 3(2H)-isothiazolones is described
NFSI-catalyzed S S bond exchange reaction for the synthesis of unsymmetrical disulfides
作者:Mengjie Song、Qingyue Hu、Zheng-Yi Li、Xiaoqiang Sun、Ke Yang
DOI:10.1016/j.cclet.2021.12.073
日期:2022.9
The metal-free SS bond exchangereaction of symmetrical disulfides catalyzed by NFSI is described. This novel protocol provides a facile and efficient approach to accessing important unsymmetrical disulfides. Furthermore, this strategy could also be utilized in the late-stage functionalization of amino acids, drugs, and natural products. The broad substrate scope, good functional group tolerance and
3-Alkylamino- and 3-arylamino isothiazole dioxides unsubstituted at C-4 and C-5 were synthesized starting from dithiopropionic amides. Taking advantage of the direct chlorination during the cyclization process or realizing an addition–elimination process with bromine on the final 3-aminoisothiazole dioxide derivatives, the corresponding 5-chloro-, 4,5-dichloro- or the 4-bromoisothiazole dioxides could
A stepwise one-pot synthesis of aliphatic thiols and their derivatives from acrylamides and sulfur
作者:András Gy. Németh、Renáta Szabó、Krisztina Németh、György M. Keserű、Péter Ábrányi-Balogh
DOI:10.1039/d2ob00512c
日期:——
investigated the reactivity of acrylamides with sulfur and eventually developed a new pseudo-multicomponent reaction for the preparation of polysulfides. Sequential one-pot reduction led to diversely substituted thiols. Additional third stage one-pot modifications provided thioethers, unsymmetric disulfide and thioester.