Versatile Solid-Phase Synthesis of Peptide-Derived 2-Oxazolines. Application in the Synthesis of Ligands for Asymmetric Catalysis
作者:Juan M. Benito、Christian A. Christensen、Morten Meldal
DOI:10.1021/ol047675h
日期:2005.2.1
A mild and high-yielding procedure for the solid-phase synthesis of 2-oxazolines from amino acids is described. The two-step protocol is based on the iodination of serine containing peptides, followed by in situ nucleophilic attack of the carbonyl oxygen from the next amino acid. Phosphinylation of the terminal amino group cleanly furnishes a resin-bound phosphine-oxazoline ligand, which upon palladium
描述了从氨基酸固相合成2-恶唑啉的温和且高产的方法。该两步方案基于含丝氨酸的肽的碘化,然后是来自下一个氨基酸的羰基氧的原位亲核攻击。末端氨基的磷酰化干净地提供了一种树脂结合的膦-恶唑啉配体,该配体在钯络合后用作不对称烯丙基取代的催化剂。[反应:看文字]