Biscoumarin: new class of urease inhibitors; economical synthesis and activity
作者:Khalid Mohammed Khan、Sajid Iqbal、Muhammad Arif Lodhi、Ghulam Murtaza Maharvi、Zia- Ullah、Muhammad Iqbal Choudhary、Atta-ur- Rahman、Shahnaz Perveen
DOI:10.1016/j.bmc.2004.01.010
日期:2004.4
A variety of biscoumarins (1-21) with variable substituents at C-11 were synthesized with an improved method and evaluated as urease inhibitors. The synthesized compounds showed varying degree of urease inhibitory activity ranging from 15.06-91.35 muM. The size and electron donating or withdrawing effects of substituents influenced the activity, which lead to the urease inhibitors. (C) 2004 Elsevier Ltd. All rights reserved.
New cerium-loaded phosphine oxide-functionalized polyurethane foam materials – Synthesis, stability, comparison of coordination behavior and catalytic applications
作者:A.S. Vijai Anand、Akella Sivaramakrishna
DOI:10.1016/j.reactfunctpolym.2021.105070
日期:2021.12
complexes is observed as Ce(IV)-PUFs > [Ce(NO3)4(TOPO)4] > [Ce(NO3)4(BAmPO)2] > [Ce(NO3)4(TPPO)4] > [Ce(NO3)2(DBP)2]. Among all, the Ce-loaded foam materials displayed the highest stability and exchange the other ligands instantaneously. Further, the Ce(IV)-PUFs are found to be stable, non-leachable, and re-usable (more than 10 cycles) catalysts in high yield synthesis of biscoumarin derivatives.