A Rapid Access to Biaryl Ether Containing Macrocycles by Pairwise Use of Ugi 4CR and Intramolecular SNAr-Based Cycloetherification
摘要:
[GRAPHICS]From readily accessible starting materials, macrocycles with an endo aryl-aryl ether bond are synthesized in only two operations by combination of the Ugi four-component reaction and an intramolecular: SNAr reaction. The nitro group serves as an activator for the macrocyclization and provides a handle for the introduction of functional group diversity. A Ugi reaction promoted by ammonium chloride In aprotic solvent is documented for the first time.
Solid-phase synthesis of natural product-like macrocycles by a sequence of Ugi-4CR and SNAr-based cycloetherification
作者:Pierre Cristau、Jean-Pierre Vors、Jieping Zhu
DOI:10.1016/s0040-4039(03)01378-9
日期:2003.7
An on-resin Ugi four-component reaction followed by an intramolecular nucleophilic aromatic substitution (SNAr) has been developed for the rapid access to biaryl-ether containing macrocycles. (C) 2003 Elsevier Ltd. All rights reserved.