An expedient synthesis of orthogonally protected lysinoalanine from Aloc-protected Garner’s aldehyde
作者:Cindy Körner、Eun-Ang Raiber、Samuel E.M. Keegan、Daniel C. Nicolau、Tom D. Sheppard、Alethea B. Tabor
DOI:10.1016/j.tetlet.2010.09.119
日期:2010.12
An expedient synthesis of orthogonally protected lysinoalanine has been developed. We have prepared a novel Garner’s aldehyde derivative bearing an Aloc group; reductive amination of this aldehyde with Fmoc-Lys-OPMB gave the lysinoalanine skeleton. This was then transformed into an orthogonally protected lysinoalanine derivative suitable for the synthesis of side-chain bridged cyclic peptides by solid