Semipermanent p-nitrobenzyloxycarbonyl (pNZ) protection of Orn and Lys side chains: prevention of undesired α-Fmoc removal and application to the synthesis of cyclic peptides
作者:Albert Isidro-Llobet、Mercedes Álvarez、Fernando Albericio
DOI:10.1016/j.tetlet.2005.09.043
日期:2005.11
Semipermanent side-chain protection of Orn and Lys with p-nitrobenzyloxycarbonyl (pNZ) for Fmoc/'Bu chemistry does not result in the unwanted removal of alpha-Fmoc that occurs when groups such as Alloc are used for the same application. Furthermore, pNZ can be used in conjuction with p-nitrobenzyl ester (pNB) to prepare cyclic peptides. (c) 2005 Elsevier Ltd. All rights reserved.