Remarkable tethering effect on DNA cleavage of propargylic sulfone conjugates with intercalating moieties
摘要:
A number of novel propargylic sulfone conjugates 3 and 4 with intercalating moieties were synthesized and evaluated for DNA cleavage activity through nucleic base alkylation. A remarkable enhancement in DNA cleaving potency was observed with those conjugates 3 possessing a suitable spacer, a right attachment point at the aromatic ring, and a good intercalator.
Synthesis, reaction, and cytotoxicity of novel propargylic sulfones
摘要:
Propargylic sulfones 1 and 2 have been synthesized for their potent interactions with DNA. The crown ether conjugate 8 was also prepared from 1 under carefully established reaction conditions. The synthesized propargylic sulfones 2, 5, and 8 exhibited high reactivity toward sulfur-, nitrogen-, and oxygen-containing nucleophiles. Compound 1 showed an IC50 of 5.3x10(-6) M against KB/P cancer cells comparable with that of the clinically used agent 5-FU.