Piperazine is an organic compound consisting of a six-membered ring containing two nitrogen atoms in opposite positions in the ring. The chemical formula of piperazine is C4H10N2, and it is an important pharmaceutical intermediate. Pyrimidines and piperazines are known to be the backbone of many bulk compounds and important core structures for approved drugs; studies have shown that combining a pyridine ring with a piperazine moiety within a single structural framework enhances biological activity.
Acridines are organic compounds and nitrogen heterocycles having the formula C13H9N. Acridine is a substituted derivative of the parent ring. It is a planar molecule structurally related to anthracene in which one carbon in the central CH group is replaced by nitrogen. Acridine and its derivatives can be used to make dyes and also used in the pharmaceutical industry. Acridine is a DNA intercalator that easily binds to DNA. Due to its DNA-intercalating properties, acridine or its suitable derivatives are expected to preferentially accumulate in tumors, which are always associated with enhanced DNA replication. Therefore, radiolabeled acridines may have prospect in tumor imaging.
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