Use of acylphosphonates for the synthesis of α-chlorinated carboxylic and α,α′-dichloro dicarboxylic acids and their derivatives
摘要:
alpha -Chloro acylphosphonates and alpha,alpha'-dichloro bisacylphosphonates were prepared in situ by chlorination of acylphosphonates and bisacylphosphonates, respectively, using sulfuryl chloride. Subsequently, they were cleaved to the corresponding alpha -chlorinated or alpha,alpha'-dichlorinated (di)carboxylic acids with a hydrogen peroxide-sodium bicarbonate system. Performing the cleavage with an alcohol or an amine yielded the corresponding alpha -chlorinated esters and alpha -chlorinated amides, respectively. (C) 2001 Elsevier Science Ltd. All rights reserved.
In Vitro and In Vivo Anticalcification Effects of Novel Bishydroxyiminophosphonates
作者:Gershon Golomb、Ada Schlossman、Yael Eitan、Hanan Saadeh、Joel M. Van Gelder、Eli Breuer
DOI:10.1002/jps.2600811009
日期:1992.10
important bone- and/or calcium-related diseases; however, side effects and lack of selectivity impede their wide use. This work reports the synthesis and evaluation of bishydroxyiminophosphonates (e.g., adipoyl- and suberoylbisphosphonate dioximes). These compounds significantly inhibited hydroxyapatite formation and dissolution in vitro and the calcification of bioprosthetic tissue implanted subdermally