synthesis of 3-hydroxyquinoline-4(1H)-one derivatives bearing substituted phenyl in position 2 and variously substituted carboxamide group in position 5 is described, with use of 3-nitrophthalicanhydride, α-haloketones and primary amines as the starting materials. The synthetic approach was inspired by the preparation of analogous derivatives reported previously. However, a different strategy had to be developed
Fluorescence response of 3-trifluoroacetylaminophthalimide to a Li+–I− ion pair induced by 254 nm photolysis in acetonitrile
作者:Hideki Okamoto、Hiroyuki Konishi、Kyosuke Satake
DOI:10.1039/c2cc17502a
日期:——
A 3-trifluoroacetylaminophthalimide selectively distinguished LiI from other alkaline-metal iodides and lithium halides by a marked fluorescence colour change, from orange-yellow to sky-blue, subsequent to 254 nm photolysis.
Thalidomide derivatives as nanomolar human neutrophil elastase inhibitors: Rational design, synthesis, antiproliferative activity and mechanism of action
作者:Beata Donarska、Adrianna Sławińska-Brych、Magdalena Mizerska-Kowalska、Barbara Zdzisińska、Wojciech Płaziński、Krzysztof Z. Łączkowski
DOI:10.1016/j.bioorg.2023.106608
日期:2023.9
antiproliferative activity against human T47D (breast carcinoma), RPMI 8226 (multiple myeloma), and A549 (non-small-cell lung carcinoma) revealed that designed compounds were more active compared to thalidomide, pomalidomide and lenalidomide used as the standard drugs. Additionally, the most active compound 4f derived from lenalidomide induces cell cycle arrest at the G2/M phase and apoptosis in T47D cells
A process for making bis(ether anhydrides) employs alkylamines having low melting temperatures thus allowing for novel intermediate process steps for preparing bis(ether anhydrides). The alkylamines have alkyl groups which contain at least three carbon atoms and have boiling temperatures in the range of 48 to 250°C at atmospheric pressure. As a result of using these amines, liquid alkylamines now can be employed in the imidization process step. The N-alkyl nitrophthalimides prepared from the recovered imidization product according to this invention can now be purified using liquid/liquid extraction or vacuum distillation. The alkyl nitrophthalimides prepared according to this invention provide for displacement reactions which now can be run at a high solids level. Likewise, the exchange reaction can be run at a higher solids level, and thus achieves an efficiency level which is higher than conventional processes.