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Updated: Jul 17, 2026

In Vitro Chemical Mapping of G-Quadruplex DNA Structures by Bis-3-Chloropiperidines
Published on: May 12, 2023
Specific stabilization of DNA triple helices by indolo[2,1-b]quinazolin-6,12-dione derivatives
Grace Shiahuy Chen1, Bhalchandra V Bhagwat, Pei-Yin Liao
1Department of Applied Chemistry, Providence University, Sha-Lu 43301, Taiwan, ROC.
Abstract:
Derivatives of indolo[2,1-b]quinazolinone containing aminoalkylamino side chains were synthesized as specific DNA triplex stabilizing agents. The aminoalkylamino side chains are essential for triplex stabilization. The position-8 fluorine atom or a methyl group to the nitrogen adjacent to the planar core can enhance triplex stability by 6 degrees C and the effect is additive. Conformational analysis reveals that the orientation of the side chain underlies the ability of this compound to stabilize a DNA triplex.
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