TiCl3OTf-[bmim]Br: a novel and efficient catalyst system for chemoselective one-pot synthesis of thioamides from arylaldoximes
作者:Jalil Noei、Ahmad R. Khosropour
DOI:10.1016/j.tetlet.2008.09.084
日期:2008.12
The combination of TiCl3OTf with 1-butyl-3-methylimidazolium bromide is found to be an efficient and novel catalytic system for chemoselective one-pot transformation of arylaldoximes to their corresponding thioamides in high to excellent yields.
A series of highly substituted 4-hydroxy-1,3-thiazoles was synthesised in two different ways. Whereas their anions display strong fluorescence in the bathochromic part of the visible spectrum, the emission is shifted hypsochromically upon alkylation reactions. This easy switch between the anion and its derivatives makes them suitable for widespread applications. The thiazoles possess prerequisites for the complexation of metals due to the coexistence of aza-heterocycles and of 1,3-diketone substructures. In addition, the hydroxy group allows further functionalisation reactions, as exemplified by the incorporation of an azide or an acetylene into the product, and by the synthesis of a star-shaped derivative.
Aerobic Visible‐Light Induced Intermolecular S−N Bond Construction: Synthesis of 1,2,4‐Thiadiazoles from Thioamides under Photosensitizer‐Free Conditions
作者:Liang Zhuo、Shihua Xie、Hui Wang、Hongjun Zhu
DOI:10.1002/ejoc.202100440
日期:2021.6.21
A green approach for S−Nconstruction with concomitant synthesis of1,2,4-thiadiazoles was developed by visible-light induced oxidative cyclization of thioamidesunder photosensitizer-free conditions.
<i>N</i>-Phenylamidines as Selective Inhibitors of Human Neuronal Nitric Oxide Synthase: Structure−Activity Studies and Demonstration of in Vivo Activity
作者:Jon L. Collins、Barry G. Shearer、Jeffrey A. Oplinger、Shuliang Lee、Edward P. Garvey、Mark Salter、Claire Duffy、Thimysta C. Burnette、Eric S. Furfine
DOI:10.1021/jm980072p
日期:1998.7.1
the amidine nitrogen and phenyl ring to give N-(3-(aminomethyl)phenyl)acetamidine (14) dramatically altered the selectivity to give a neuronal selective nitric oxide synthase (nNOS) inhibitor. Part of this large shift in selectivity was due to 14 being a rapidly reversible inhibitor of iNOS in contrast to the essentially irreversible inhibition of iNOS observed with 13. Structure-activity studies revealed
aryl/heteroaryl/amino/aminoarylthiazole-4-carboxamides as bacillamide analogues having structural variation at position-2 of thiazole ring. Bacillamide and its analogues were evaluated for their cytotoxic activity against three cancer cell lines (HCT-116, MDA-MD-231 and JURKAT cell lines) using colorimetric cell proliferation assay. Compounds 17a and 17b exhibited potent anti-cell proliferation activity