reagents, namely, dn-alkyl sulfonium salts, dn-alkyl halides, a dn-alkyl azide, and a dn-alkyl amine, were prepared and used to efficiently introduce dn-alkyl groups into drug candidates and their analogues with complex skeletons. A liver microsomal metabolism study using 7-(d2-ethoxy)flavone as a model compound revealed a significant deuterium kinetic isotopeeffect due to the installed d2-ethoxy group
制备了多种氘化试剂,即dn-烷基锍盐、 dn-烷基卤化物、 dn-烷基叠氮化物和dn-烷基胺,并用于有效地将dn-烷基引入候选药物中,并它们的类似物具有复杂的骨架。使用 7-( d 2 -乙氧基)黄酮作为模型化合物进行的肝微粒体代谢研究表明,由于安装了d 2 -乙氧基,因此具有显着的氘动力学同位素效应。
Thermal Decomposition of Pentacarbonyl(1-acyloxyalkylidene)chromium(0) Complexes: Formation of <i>Z</i>-Enol Esters
作者:Björn C. Söderberg、Jian Liu、Thomas W. Ball、Michael J. Turbeville
DOI:10.1021/jo962197c
日期:1997.8.1
Pentacarbonyl(1-acyloxyalkylidene)chromium(0) complexes, formed in situ by reaction of the corresponding tetramethylammonium pentacarbonyl(1-oxoalkyl)chromate(1-) salts with carboxylic acid halides, affords enol esters in moderate to good yields. In all cases examined, the Z-enol ester was obtained as the major or exclusive isomer. Addition of I equiv of pyridine to the reaction mixture substantially improved the Z/E ratio and, in most cases, increased the chemical yield.