We describe here a general strategy for the synthesis of dimeric
anilinium/guanidinium calix[4]arenes
with aliphatic and heteroaromatic bridges. These compounds display
a remarkably high affinity towards double-stranded (ds) DNA and
act by a rare mechanism, i.e., insertion into the wide major groove
of the nucleic acids.
DNA - major groove - sequence selectivity - binding affinity - calixarenes - oligopyrroles