[GRAPHICS]Pure alpha -azido acids were prepared using an efficient diazo transfer method followed by buffered workup, These building blocks were used to prepare small peptides on Wang resin by two approaches, Peptides prone to diketopiperazine formation were prepared in good yields by coupling acids to resin bound iminophosphoranes during Fmoc-Wang synthesis, The iminophosphoranes can also be hydrolyzed under neutral conditions to provide unprotected amines ready for further coupling.
Dipeptide Mimics, Libraries Combining Two Dipeptide Mimics with a Third Group, and Methods for Production Thereof
申请人:Burgess Kevin
公开号:US20120232268A1
公开(公告)日:2012-09-13
Monovalent compounds having moieties comprising at least one amino acid side chain are bound to a core molecule, which also comprises a nucleophilic moiety bound to said core molecule. Monovalent compounds also comprise a macrocyclic ring, a nucleophilic moiety, and a spacer group. Monovalent compounds may be combined into bivalent and trivalent compounds, some of which may have a labeling tag. Methods of production of bivalent compounds and contemplated uses thereof are disclosed.
Solid-Phase Staudinger Ligation from a Novel Core-Shell-Type Resin: A Tool for Facile Condensation of Small Peptide Fragments
作者:Hanyoung Kim、Jin Ku Cho、Saburo Aimoto、Yoon-Sik Lee
DOI:10.1021/ol0530629
日期:2006.3.1
[reaction: see text] Solid-phase Staudinger ligation of small peptides was performed on a novel core-shell-type resin. Solid-phase Staudinger ligation was mediated by synthetic solid-supported phosphinothiol, which was readily prepared by a straightforward synthetic route. This protocol afforded final peptide products in excellent yields and purities and thus could provide the opportunity to facilitate