Chromophoric Nucleoside Analogues: Synthesis and Characterization of 6-Aminouracil-Based Nucleodyes
作者:Noam S. Freeman、Curtis E. Moore、L. Marcus Wilhelmsson、Yitzhak Tor
DOI:10.1021/acs.joc.6b00310
日期:2016.6.3
Nucleodyes, visibly colored chromophoric nucleosideanalogues, are reported. Design criteria are outlined and the syntheses of cytidine and uridine azo dye analogues derived from 6-aminouracil are described. Structural analysis shows that the nucleodyes are sound structural analogues of their native nucleoside counterparts, and photophysical studies demonstrate that the nucleodyes are sensitive to
[EN] FORMATION OF TRIPLE HELIX COMPLEXES OF DOUBLE STRANDED DNA USING NUCLEOSIDE OLIGOMERS
申请人:THE JOHNS HOPKINS UNIVERSITY
公开号:WO1990015884A1
公开(公告)日:1990-12-27
(EN) A specific segment of double stranded DNA may be detected or recognized by formation of a triple helix structure using an oligomer comprised of nucleosidyl units linked by internucleosidyl phosphorus linkages. Function or expression of double stranded DNA segments may be prevented by triple helix formation. Novel oligomers comprising modified nucleosidyl units are useful in triple helix formation, and may be optionally derivatized with DNA modifying groups.(FR) Un segment spécifique d'ADN double brin peut être détecté ou reconnu par formation d'une structure à triple hélice en utilisant un oligomère constitué d'unités nucléosidyles liées par des liaisons de phosphore internucléosidyles. La fonction ou l'expression de segments ADN à double brin peut être empêchée par la formation d'hélices triples. De nouveaux oligomères comprenant des unités nucléosidyles modifiées sont utiles dans la formation d'hélices triples et peuvent éventuellement être dérivés avec des groupes de modification d'ADN.
pH-Independent Triple-Helix Formation with 6-Oxocytidine as Cytidine Analogue
standard solid-phase synthesis. Hybridization of 15-mer Hoogsteen strands with target 21-mer duplexes was investigated. Comparison of the triplex-forming abilities of the different building blocks revealed that: i) 5-allyl substitution has a negative influence on triplex stability, ii) a uniform backbone of the Hoogsteen strand stabilizes triplexes relative to mixed backbones; iii) RNA strands with 6-oxocytidine