Identifying the targets of bioactivesmallmolecules is a challenging endeavor for which no general solution currently exists. Classical affinity purification experiments suffer from the need to functionalise a bioactive compound and link it to a solid support, which may interfere with target binding. A modern mass spectrometry-based proteomics technique that has partially circumvented this problem
Enantioselective Synthesis of (<i>R</i>)‐2‐Methylalkanoic Acids: A Convenient Approach to α‐Substituted Chiral Carboxylic Acid Derivatives
作者:Shyam Shirali、Aijun Zhang
DOI:10.1081/scc-200030650
日期:2004.1.1
Abstract Racemization‐free deacylation of N‐acylimidazolidine‐2‐ones using lithium hydroperoxide affords the corresponding α‐substituted chiral carboxylic acids in high yield while permitting recovery of the chiral auxiliary.
Asymmetric Synthesis of the Fully Functional Macrolide Core of Salicylihalamide: Remote Control of Olefin Geometry during RCM
作者:Alois Fürstner、Oliver R. Thiel、Gaetano Blanda
DOI:10.1021/ol006646d
日期:2000.11.1
[GRAPHICS]A catalysis-based approach to the core region 24 of the antitumor agents salicylihalamides A and B is reported. Key steps are two asymmetric hydrogenations of beta -keto esters 13 and 16 catalyzed by [(R)-BINAP-RuCl2](2). NEt3 and an RCM-based macrocyclization effected by the NHC-containing ruthenium carbene 21. The stereochemical outcome of the tatter reaction is controlled by remote substituents on the phenolic OH group of the cyclization precursor 23.