Synthesis of Cyclic Peptide Mimetics by the Successive Ring Expansion of Lactams
作者:Thomas C. Stephens、Mahendar Lodi、Andrew M. Steer、Yun Lin、Matthew T. Gill、William P. Unsworth
DOI:10.1002/chem.201703316
日期:2017.9.27
successive ring‐expansion protocol is reported that enables the controlled insertion of natural and non‐natural amino acid fragments into lactams. Amino acids can be installed into macrocycles via an operationally simple and scalable iterative procedure, without the need for high dilution. This method is expected to be of broad utility, especially for the synthesis of medicinally important cyclic peptide
Iterative Assembly of Macrocyclic Lactones using Successive Ring Expansion Reactions
作者:Thomas C. Stephens、Aggie Lawer、Thomas French、William P. Unsworth
DOI:10.1002/chem.201803064
日期:2018.9.18
Macrocyclic lactones can be prepared from lactams and hydroxyacid derivatives via an efficient 3‐ or 4‐atom iterative ringexpansion protocol. The products can also be expanded using amino acid‐based linear fragments, meaning that macrocycles with precise sequences of hydroxy‐ and amino acids can be assembled in high yields by “growing” them from smaller rings, using a simple procedure in which high