Copper-Free Huisgen Cycloaddition for the 14-3-3-Templated Synthesis of Fusicoccin‐Peptide Conjugates

Copper-Free Huisgen Cycloaddition for the 14-3-3-Templated Synthesis of Fusicoccin‐Peptide Conjugates
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无铜 Huisgen 环加成反应用于 14-3-3-模板合成 Fusicoccin-肽缀合物

DOI:
10.1002/asia.202000042
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发表时间:
2020
期刊:
Chem. Asian. J.
影响因子:
--
通讯作者:
J.
J.
中科院分区:
--
文献类型:
--
作者:
Masuda;R.; Kawasaki,;Y.; Igawa;K.; Manabe;Y.; Fujii;H.; Kato;N.; Tomooka;K.; Ohkanda;J.

文献摘要

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中等大小的分子已经成为一个有吸引力的化学空间,并可能为开发控制细胞内蛋白质相互作用的合成试剂提供坚实的基础。然而,这些试剂有限的细胞渗透性和化学易处理性仍有待解决。我们设想这种中等大小分子的靶向模板合成可能提供一种解决方案。在这里,我们利用无铜Huisgen环加成进行模板合成,使用含有4,8-二氮杂环壬炔(DACN)部分的肽片段和含有叠氮化物的梭孢菌素衍生物,在体外存在或不存在重组14 - 3 - 3 β蛋白的情况下。 产物产率的时程变化表明,在14 - 3 - 3的存在下,反应加速,并且主要生成一种区域异构体,支持模板效应。
Mid‐sized molecules have emerged as an attractive chemical space and potentially provide a robust basis for the development of synthetic agents to control intracellular protein interactions. However, the limited cell permeability and chemical tractability of such agents remain to be addressed. We envisioned that target‐templated synthesis of such mid‐sized molecules might provide a solution. Here, we exploited a copper‐free Huisgen cycloaddition for template synthesis using a peptide fragment containing a 4,8‐diazacyclononyne (DACN) moiety and an azide‐containing fusicoccin derivative in the presence or absence of recombinant 14‐3‐3ζ protein in vitro. Time‐course changes in the yield of products demonstrated that the reaction was accelerated in the presence of 14‐3‐3 and one of the regioisomers was generated predominantly, supporting the template effect.