[EN] CYCLIC DI-NUCLEOTIDE COMPOUNDS AND METHODS OF USE<br/>[FR] COMPOSÉS DI-NUCLÉOTIDES CYCLIQUES ET LEURS PROCÉDÉS D'UTILISATION
申请人:IMMUNE SENSOR LLC
公开号:WO2017161349A1
公开(公告)日:2017-09-21
Disclosed are cyclic-di-nucleotide cGAMP analogs, methods of synthesizing the compounds, pharmaceutical compositions comprising the compounds thereof, and use of compounds and compositions in medical therapy.
Concise synthesis of aryl-C-nucleosides by Friedel–Crafts alkylation
作者:Sven Hainke、Sebastian Arndt、Oliver Seitz
DOI:10.1039/b509846g
日期:——
A fast and simplified synthesis of 1â²,2â²-dideoxy-1â²-pyrenyl-riboside and several other C-nucleosides is shown. Shelf-stable 1-O-methyl-3,5-di-O-toluoyl-2-deoxyribose is demonstrated to serve as a versatile glycosyl donor in Lewis acid promoted FriedelâCrafts alkylations of unsubstituted pyrene and other inexpensive arenes such as fluorene and methylnaphthalene. The reaction conditions favour the formation of β-configurated C-nucleosides which renders additional epimerisation steps unnecessary. As a result, protected β-aryl-C-nucleosides are available directly from non-substituted arenes in three steps overall.
Templated chemistry for monitoring damage and repair directly in duplex DNA
作者:Seoung Ho Lee、Shenliang Wang、Eric T. Kool
DOI:10.1039/c2cc34060g
日期:——
We report the fluorogenic detection of the product of base excision repair (an abasic site) in a specific sequence of duplex DNA. This is achieved by DNA-templated chemistry, employing triple helix-forming probes that contain unnatural nucleobases designed to selectively recognize the site of a missing base. Light-up signals of up to 36-fold were documented, and probes could be used to monitor enzymatic removal of a damaged base.
Naphthalene, Phenanthrene, and Pyrene as DNA Base Analogues: Synthesis, Structure, and Fluorescence in DNA
作者:Rex X.-F. Ren、Narayan C. Chaudhuri、Pamela L. Paris、Rumney、Eric T. Kool
DOI:10.1021/ja9612763
日期:1996.1.1
efficient method has also been developed for epimerization of the α-anomers to β-anomers by acid-catalyzed equilibration; this isomerization is successfully carried out on the four polycyclic nucleosides as well as two substituted phenyl nucleosides. The geometry of the anomeric substitution is derived from (1)H NOE experiments and is also correlated with a single-crystal X-ray structure of one α-isomer
我们描述了携带多环芳烃的脱氧核糖核苷的合成、结构和 DNA 掺入作为 DNA“基础”类似物。新的多环化合物是 1-萘基、2-萘基、9-菲基和 1-芘基脱氧核苷。这些化合物是使用最近开发的 C-糖苷键形成方法合成的,该方法涉及芳香族化合物的有机镉衍生物与 1α-氯代脱氧核糖前体偶联。这种偶联的主要产物是脱氧核糖苷的 α-端基异构体。还开发了一种通过酸催化平衡将 α-端基异构体差向异构化为 β-端基异构体的有效方法;这种异构化成功地对四个多环核苷以及两个取代的苯基核苷进行。异头取代的几何形状源自 (1)H NOE 实验,并且还与一种 α-异构体的单晶 X 射线结构相关。三种多环 C-核苷衍生物通过其亚磷酰胺衍生物整合到 DNA 寡核苷酸中;芘基和菲基衍生物在 DNA 序列中显示出荧光。结果 (1) 拓宽了我们的 C-糖苷偶联反应的范围,(2) 证明(使用新的酸催化差向异构化)α-和 β-异头物
Local disruption of DNA-base stacking by bulky base surrogates
作者:Ishwar Singh、Walburga Hecker、Ashok K. Prasad、Virinder S. Parmar、Oliver Seitz
DOI:10.1039/b110842e
日期:2002.2.27
A novel biphenyl base surrogate disrupts 2-aminopurine base stacking while maintaining duplex integrity.