Synthesis of bioactive and stabilized cyclic peptides by macrocyclization using C(sp(3))-H activation.

Synthesis of bioactive and stabilized cyclic peptides by macrocyclization using C(sp(3))-H activation.
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DOI:
10.1039/c6sc05530c
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发表时间:
2017-06-01
期刊:
影响因子:
8.4
通讯作者:
Wang H
Wang H
中科院分区:
化学1区
文献类型:
--
作者:
Tang J;He Y;Chen H;Sheng W;Wang H

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利用C(sp3)-H活化法合成了具有新型Cβ-Ar交联的环肽,并首次对其生物学性质进行了评价。近年来,环肽由于其抑制蛋白质-蛋白质相互作用的能力而引起越来越多的关注。目前制备环肽的策略通常依赖于功能性氨基酸侧链或掺入非天然氨基酸,从而限制了它们的结构多样性。在这里,我们描述了一种高度通用的肽大环化策略的发展,通过钯催化的C(sp3)-H活化和合成的环肽具有独特的烃键之间的β-碳的氨基酸和芳香族侧链的苯丙氨酸和色氨酸。我们证明,与无环肽相比,此类肽表现出改善的生物学特性。最后,我们将该方法应用于天然产物celogentin C的合成。
Synthesis of cyclic peptides with novel Cβ–Ar crosslinks has been achieved by C(sp3)–H activation, and their biological properties have been evaluated for the first time. Cyclic peptides have attracted increasing attention in recent years due to their ability to inhibit protein–protein interactions. Current strategies to prepare cyclic peptides often rely on functional amino acid side chains or the incorporation of unnatural amino acids, thus limiting their structural diversity. Here, we describe the development of a highly versatile peptide macrocyclization strategy through a palladium-catalyzed C(sp3)–H activation and the synthesis of cyclic peptides featuring unique hydrocarbon linkages between the β-carbon of amino acids and the aromatic side chains of Phe and Trp. We demonstrate that such peptides exhibit improved biological properties compared to their acyclic counterparts. Finally, we applied this method in the synthesis of the natural product celogentin C.
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