in this paper, new (2e, 2'e)-3, 3'-(((3- hydroxypropane-1, 2-diyl) bis (oxy)) bis (2, 1-phenylene)) bis (1-phenylprop-2-en-1-one) (2a) was prepared in good yield by condensation reaction of acetophenone with bisaldehyde (1a) in ethanolic naoh solutions at room temperature. the (2e, 2'e)-3, 3'-(((3- hydroxypropane-1, 2-diyl) bis (oxy)) bis (2, 1-phenylene)) bis (1-phenylprop-2-en-1-one) (2a) was...

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A b s t r a c t . Oligonucleotides can be designed to bind to oligopurine.oligopyrimidine sequences of double-helical DNA. Binding occurs in the major groove and a triple helix is formed. Bifunctional oligonucleotide-intercalator conjugates have an increased affinity due to intercalation either at the triplex-duplex junction or within the triple-helical structure. Some intercalating agents can ...

A mononuclear complex of Zn(II), [Zn(DIP)(2) (DMP)] (NO(3))(2)·2H(2)O in which DIP is 4,7-diphenyl-1,10-phenanthroline and DMP is 4,4'-dimethyl-2,2'-bipyridine has been prepared and characterized by (1)HNMR spectroscopy, FT-IR, UV-Vis and elemental analysis techniques. DNA-binding properties of the complex were studied using UV-vis spectra, circular dichroism (CD) spectra, fluorescence, cyclic ...

The study of methylene blue (MB) binding to DNA has been carried out by fluorescence spectroscopy method. It was shown that on the fluorescence spectra of MB and its complexes with DNA two peaks exist at λ=583 nm and λ=682 nm wavelengths. Peak at λ=583 nm enhances with increasing of DNA concentration, but at λ=682 nm it decreases. The comparison of obtained data with the results received for DN...

The force-displacement response of a single duplex DNA molecule was measured. The force saturates at a plateau around 70 piconewtons, which ends when the DNA has been stretched about 1.7 times its contour length. This behavior reveals a highly cooperative transition to a state here termed S-DNA. Addition of an intercalator suppresses this transition. Molecular modeling of the process also yield...

the synthesis of some 9,10-disubstituted anthracene derivatives are described. 9,10-bis(2-bromoethyl) anthracene 4,9,10-bis (2-cyanoethyl) anthracene 5 and 9,10-bis (4-hydroxybutyl) anthracene 11 are synthesized for the first time.

An easy method was developed for the efficient preparation of diversely new 5,5-disubstituted N(3),N'(3)-linkaged bis-hydantoins. At first, using the same methods, some ketones and terephthalaldehyde were converted to several hydantoins and a new bis-hydantoin , respectively. Then 1,6-dibromohexane, as a mild reagent, was employed for the alkylation and incorporation of synthesized substrates t...