Factor VIIa inhibitors: A prodrug strategy to improve oral bioavailability
作者:Jennifer R. Riggs、Aleksandr Kolesnikov、John Hendrix、Wendy B. Young、William D. Shrader、Dange Vijaykumar、Robin Stephens、Liang Liu、Lin Pan、Joyce Mordenti、Michael J. Green、Juthamas Sukbuntherng
DOI:10.1016/j.bmcl.2006.01.039
日期:2006.4
We have developed a series of potent and selective factor VIIa inhibitors based on the 2-[5-(5-carbamimidoyl-1H-benzoimidazol-2-yl)-6-hydroxy-biphenyl-3-yl]-succinic acid scaffold. These amidine-containing compounds have low oral bioavailability. Herein, we describe our efforts to improve the oral bioavailability of the parent amidine via a prodrug strategy where the amidine basicity and polarity were reduced with either an alkoxy-amidine or a carbamate prodrug. (C) 2006 Elsevier Ltd. All rights reserved.
Lewis Acid Mediated Electrophilic Cyanation of 2,2′-Biphenols
作者:Wu Zhang、Wen Yang、Wanxiang Zhao
DOI:10.1021/acs.joc.0c00458
日期:2020.7.2
A Lewisacidmediated electrophilic cyanation of 2,2′-biphenols with a trifluoromethanesulfonyl (Tf) protecting group is reported. The cyanation reactions with less toxic, commercially available MeSCN as a cyanating reagent afforded a range of 3-cyan-2,2′-biphenols in moderate to high yields. The use of trifluoromethanesulfonyl (Tf) as a protecting group is crucial to the success of this transformation