The invention provides a compound of structure (I): wherein X is S, O or NR
N
, where R
N
is H or alkyl; L is a linker group; Q is a group capable of binding with dsDNA; G and G′ are, independently, absent or have between 1 and 20 main chain atoms; FG is a functional moiety comprising at least one O or N atom or a transition metal complex; and R is selected from the group consisting of H, alkyl, alkoxy or OCR
a
R
b
coupled to an atom in L so as to form a six-membered ring. R
a
and R
b
are independently H or optionally substituted alkyl.
本发明提供了一种结构为(I)的化合物:其中X为S、O或NRN,其中RN为H或烷基;L为连接基团;Q为能够与dsDNA结合的基团;G和G'分别为不存在或具有1至20个主链原子;FG为包含至少一个O或N原子或过渡
金属配合物的功能性基团;而R选自由H、烷基、烷氧基或OCRaRb,与L中的一个原子耦合以形成一个六元环,其中Ra和Rb独立地为H或可选择取代的烷基。