Synthesis and Solution Conformation ofβ-Hairpin Mimetics Utilizing a Template Derived from (2S,3R,4R)-Diaminoproline
作者:Marc E. Pfeifer、Kerstin Moehle、Anthony Linden、John A. Robinson
DOI:10.1002/(sici)1522-2675(20000216)83:2<444::aid-hlca444>3.0.co;2-r
日期:2000.2.16
A novel template was synthesized for stabilizing beta-hairpin conformations in cyclic peptide mimetics. The template is a diketopiperazine derived formally from L-aspartic acid and (2S,3R,4R)-diaminoproline, the latter being available by an efficient synthetic route from vitamin C, The template was incorporated by solid-phase peptide synthesis into a cyclic loop mimetic containing the sequence (-Ala-Asn-Pro-Asn-Ala-Ala-template-). This mimetic was shown by NMR to adopt a stable beta-hairpin conformation in (D-8)DMSO solution. The template may prove to be: generally useful for creating small-molecule mimetics: of hairpin loops on proteins of diverse function.