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Synthesis and antiprotozoal activities of new 3-azabicyclo[3.2.2]nonanes
Sarfraz Ahmad,Werner Seebacher,Volker Wolkinger,Armin Presser,Johanna Faist,Marcel Kaiser,Reto Brun,Robert Saf,Robert Weis 대한약학회 2015 Archives of Pharmacal Research Vol.38 No.8
Some antimalarial agents in use typically bear basic side chains as ligands. Such ligands were attached to the amino substituent of a bridgehead atom of already antiprotozoal active 3-azabicyclo[3.2.2]nonanes. Structure verification was done by NMR measurements. The new compounds were tested for their antiplasmodial and antitrypanosomal activities against Plasmodium falciparum K1 (multiresistant) and Trypanosoma brucei rhodesiense as well as for their cytotoxicity against L6 cells. Theiractivities are compared to those of already prepared compounds and structure–activity relationships are discussed.
안다영,Seonghwan Kim,Panyu Ren,Volker Presser,김춘수 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.118 No.-
As part of humankind’s path towards more sustainable water technologies, redox flow desalination (RFD)has emerged as a promising technology due to its high energy efficiency and easy operation. So far, RFDresearch has focused on removing and recovering inorganic salts such as lithium-ions, heavy metal ions,or phosphate and nitrate ions. Thus, the potential of RFD in water desalination and resource recovery processeshas not been fully demonstrated. Therefore, this study aimed to assess RFD for the valorization oftetramethylammonium hydroxide (TMAH) as value-added organic compounds from wastewater beyondinorganic elements, which is widely being used as an etching solvent, photoresist developer, and surfactantin semiconductor and display industries. By applying a low cell voltage (<1.2 V), a reversible redoxreaction allowed a continuous removal of TMAH from the wastewater stream and a simultaneous recoveryfor reuse as a form of tetramethylammonium cation. The TMAH removal rate was approximately4.3 mM/g/h with a 40% recovery ratio. With various operational conditions (i.e., TMAH concentration, cellvoltage, and flow rate), our system exhibited a high potential for the valorization of TMAH with 60%reduction in capital cost compared to conventional desalination processes.