Phosphaisocoumarins as a new class of potent inhibitors for pancreatic cholesterol esterase
摘要:
Due to the importance of pancreatic cholesterol esterase (CEase) as a potential target in atherosclerosis and for the development of hypocholesterolemic agents, there are increasing interests in designing and synthesizing CEase inhibitors. In the present study, we prepared forty-five isocoumarin phosphorus analogues (i.e., phosphaisocoumarins) and investigated the inhibition of these compounds on the CEase. The results showed that some phosphaisocoumarins could act as potent inhibitors of CEase. The most potent inhibitors, compounds 9d, 10a and 12e give IC(50) values of 4.8 mu M, 2.3 mu M and 1.9 mu M, respectively. The inhibition mechanism and kinetic characterization studies indicate that they are reversible competitive inhibitors. (C) 2010 Published by Elsevier Masson SAS.
An efficient synthesis of 2-(1-(E)-alkenyl)phenylphosphonates via Suzuki reaction of aryl nonaflates with (E)-1-alkenylboronates
作者:Ai-Yun Peng、Ba-Tian Chen、Pei-Jiang Chen
DOI:10.1016/j.jfluchem.2013.03.015
日期:2013.7
Suzuki coupling reaction between 2-phosphonylaryl nonaflates and (E)-1-alkenylboronic pinacol esters using Pd(OAc)2/PPh3 as catalysts, K2CO3 as base and DMF as solvent has been developed. This strategy allows for convenient synthesis of twelve 2-(1-(E)-alkenyl)phenylphosphonates in good to excellent yields, most of which are not readily available by the previously reported Heck reaction of the same aryl