Readily Accessible Ambiphilic Cyclopentadienes for Bioorthogonal Labeling.

Readily Accessible Ambiphilic Cyclopentadienes for Bioorthogonal Labeling.
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DOI:
10.1021/jacs.8b02978
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发表时间:
2018-05-23
影响因子:
15
通讯作者:
Houk KN
Houk KN
中科院分区:
化学1区
文献类型:
--
作者:
Levandowski BJ;Gamache RF;Murphy JM;Houk KN

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A new class of biorthogonal reagents based on the cyclopentadiene scaffold is described. The diene 6,7,8,9-tetrachloro-1,4-dioxospiro[4,4]nona-6,8-diene (a tetrachlorocyclopentadiene ketal, TCK) is ambiphilic and self-orthogonal with remarkable stability. The diene reacts rapidly with a trans-cyclooctene and an endo-bicyclononyne, but slowly with dibenzo-azacyclooctyne (DIBAC), allowing for tandem labeling studies with mutually orthogonal azides that react rapidly with DIBAC. TCK analogues are synthesized in three steps from inexpensive, commercially available starting materials.
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