申请人:The University of Queensland
公开号:US07589170B1
公开(公告)日:2009-09-15
This invention relates to methods for preparing cyclic peptides and peptidomimetic compounds in solution and bound to solid supports, and to cyclic peptide or peptidomimetic libraries for use in drug screening programs. In particular, the invention relates to a generic strategy for synthesis of cyclic peptides or peptidomimetics that enables the efficient synthesis under mild conditions of a wide variety of desired compounds. Two approaches were evaluated for their improvements in solution and solid phase synthesis of small cyclic peptides: positioning reversible N-amide substituents in the sequence; and applying native ligation chemistry in an intramolecular sense. Systematic investigation of the effects of preorganising peptides prior to cyclisation by using peptide cyclisation auxiliaries, and developing new linkers and peptide cyclisation auxiliaries to aid cyclic peptide synthesis gives surprising improvements in both yields and purity of products compared to the prior art methods. The combination of these technologies provides a powerful generic approach for the solution and solid phase synthesis of small cyclic peptides. The ring contraction and N-amide substitution technology of the invention provide improved methods for the synthesis of cyclic peptides and peptidomimetics. When used in conjunction with linker strategies, this combination provides solid-phase avenues to cyclic peptides and peptidomimetics.
本发明涉及在溶液中和固定到固体载体上制备环肽和类肽类化合物的方法,以及用于药物筛选计划的环肽或类肽类库。具体而言,本发明涉及一种通用的合成环肽或类肽类化合物的策略,使得在温和条件下高效地合成各种所需化合物成为可能。对于小环肽在溶液和固相合成方面的改进,评估了两种方法:在序列中定位可逆N酰胺取代基;在分子内应用原生连接化学。通过使用肽环化辅助剂预先组织肽链并开发新的连接剂和肽环化辅助剂,系统地研究了肽环化前的肽链组织对环化的影响,相比于现有技术方法,这些改进使产物的收率和纯度有了惊人的提高。这些技术的结合为小环肽的溶液和固相合成提供了强大的通用方法。本发明的环收缩和N酰胺取代技术提供了改进的环肽和类肽类化合物的合成方法。当与连接剂策略结合使用时,这种组合为固相合成环肽和类肽类化合物提供了途径。