Synthesis and Duplex-Stabilizing Properties of Fluorinated<i>N</i>-Methanocarbathymidine Analogues Locked in the C3′-<i>endo</i>Conformation
作者:Michael E. Jung、Timothy A. Dwight、Frederic Vigant、Michael E. Østergaard、Eric E. Swayze、Punit P. Seth
DOI:10.1002/anie.201405283
日期:2014.9.8
The efficient synthesis, antiviral activity, and duplex‐stabilizing properties of both isomers of the 2′‐fluoro analogue of Northern methanocarbathymidine (N‐MCT), 2 and 3, are reported. We show that 2′‐F incorporation on the N‐MCT scaffold has a strong stabilizing effect on duplex thermal stability.
Sulfoximine-directed osmylation: synthesis of enantiomerically pure dihydroxycycloalkanones
作者:Carl R. Johnson、Michael R. Barbachyn
DOI:10.1021/ja00320a053
日期:1984.4
On prepare une serie de dihydroxy-2,3 cyclohexanones et cyclo pentanones di- ou trisubstituees, a partir des cyclenones correspondantes par reaction avec le N-methyl S-methylS-phenyl sulfoximide
关于制备 une serie de dihydroxy-2,3 cyclohexones et cyclopentanones di-ou trisubstituees, a partir des cyclenones相应的反应 avec le N-methyl S-methyl S-phenyl sulfoximide
N-oxide-promoted intermolecularPauson–Khandreaction (PKR) has been studied. The addition of 15% ethylene glycol to the reaction mixture consistently increased (from 20% up to 2–4-fold) the reaction yields. The use of ethylene glycol as additive in the N-oxide-promoted intermolecularPauson–Khandreaction (PKR) has been studied. The addition of 15% ethylene glycol to the reaction mixture consistently
[EN] BICYCLIC CARBOCYCLIC NUCLEOSIDES AND OLIGOMERIC COMPOUNDS PREPARED THEREFROM<br/>[FR] NUCLÉOSIDES CARBOCYCLIQUES BICYCLIQUES ET COMPOSÉS OLIGOMÈRES PRÉPARÉS À PARTIR DE CEUX-CI
申请人:ISIS PHARMACEUTICALS INC
公开号:WO2015142910A1
公开(公告)日:2015-09-24
The present invention provides novel bicyclic carbocyclic nucleosides and oligomeric compounds prepared therefrom. Incorporation of one or more of the bicyclic carbocyclic nucleosides into an oligomeric compound is expected to enhance one or more properties of the oligomeric compound. In certain embodiments, the oligomeric compounds provided herein hybridize to a portion of a target RNA resulting in modulation of normal function of the target RNA. In certain embodiments, bicyclic carbocyclic nucleosides are provided as monomers for use as antivirals.
Synthetic studies towards the construction of the cyclopenta[a]indene fragment of the heptacyclic marine metabolite sporolide are reported based on a hypothetical biosynthesis. The key step of this biogenetic proposal includes a Bergman cyclization of an enediyne precursor. The enediyne target of this synthetic study was prepared by Sonogashira cross-coupling of two fragments, of which the cyclopentane
基于假想的生物合成,报道了关于七环海洋代谢物子孢子化物的环戊[ a ]茚片段的构建的合成研究。该生物遗传学提议的关键步骤包括烯二炔前体的Bergman环化。该合成研究的烯二炔目标物是通过两个片段的Sonogashira交叉偶联制备的,其中环戊烷片段是由环戊烯酮,Morita-Baylis-Hillman反应和对映选择性Sharpless二羟基化制备的。 交叉偶联-天然产物-氧化-立体选择性合成-全合成