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
中科院分区:
文献类型:
--
作者:
Tang J;He Y;Chen H;Sheng W;Wang H
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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